A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof

Abstract

A gas and steam power generation afterburning type heat-electricity decoupling system and a working mechanism thereof, characterized in that the system comprises a gas turbine power generation system, a power transmission and transformation system, a molten salt heat storage system and a steam power generation system; the gas turbine power generation system is connected with the molten salt heat storage system through a flue gas pipeline; the molten salt heat storage system is connected with the power transmission and transformation system through a cable; the gas turbine power generation system is connected with the power transmission and transformation system through a cable; the molten salt heat storage system is connected with the steam power generation system through a main steam pipeline and a backwater pipeline; and the steam power generation system is connected with the power transmission and transformation system through a cable. The system can realize complete heat-electricity decoupling in a green energy storage system, realize the functions of self-supply of external power, storage of green electricity or heat supply, increase the accommodation capacity of a power grid to green electricity, and enhance the stability, flexibility and safety of a new power system.

Description

Technical Field

[0001] This invention belongs to the technical field of energy-saving retrofit of gas-fired power generation, and in particular, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism. Background Technology

[0002] After some coal-fired power units were shut down, their functions were partially replaced by gas-fired heating boilers and partially by gas-fired power generation and heating systems. Optimization and modification of the basic functions of these gas-fired boilers have led to relatively mature technological solutions such as gas turbine-plus-waste-heat boiler power generation and heating systems, and gas turbine-plus-thermal-storage power generation and heating systems.

[0003] Patent CN 215170390 U discloses a technical solution for a distributed energy station system using a natural gas turbine, comprising a gas turbine, a waste heat boiler, a steam turbine, a generator, a refrigeration unit, and a steam heat exchanger. While this solution utilizes waste heat from gas turbine power generation and employs distributed energy utilization technology to achieve cascaded energy utilization and improve overall efficiency, it lacks the functions of thermal energy storage and thermoelectric decoupling. Invention patent CN 108194201 A discloses a waste heat utilization system and its operation method for a gas turbine power plant. This system includes a gas turbine, a first heat exchange system, a thermal storage system, a second heat exchange system, a third heat exchange system, and a first heat consumption system. Although this solution possesses thermal energy storage and a certain degree of thermoelectric decoupling, the thermoelectric decoupling is not complete; the total amount of heat and the total amount of power generation are still mutually dependent, preventing independent external heat or power supply.

[0004] This invention addresses the technical problems existing in the above-mentioned technical solutions. The technical solution implemented not only enables the full and graded utilization of waste heat, but also achieves complete decoupling of thermoelectricity, enabling the system to independently supply power or heat to the outside world. Summary of the Invention

[0005] The purpose of this invention patent is to achieve complete decoupling of thermoelectricity in a gas turbine power generation and heating green energy storage system, so as to realize the system's autonomous power supply or heating.

[0006] The technical solution of the present invention is as follows:

[0007] A gas and steam power generation afterburning thermoelectric decoupling system and its working mechanism are characterized by: including at least one afterburning device (72-2), wherein the afterburning device (72-2) includes at least one first afterburning nozzle (72-2-1-1), a first afterburning branch circuit (72-2-1-2), a first afterburning mixing pipe (72-2-1-3), a first afterburning ignition chamber (72-2-1-4), a first afterburning ignition observation window (72-2-1-5), a first afterburning air pipe (72-2-1-6), a first afterburning air electric valve (72-2-1-7), a first afterburning electric igniter (72-2-1-8), a first afterburning gas pipe (72-2-1-9), a first afterburning gas electric valve (72-2-1-10), and at least one m-th afterburning nozzle. The combustion device (72-2) comprises a nozzle (72-2-m-1), the m-th afterburning branch circuit (72-2-m-2), the m-th afterburning mixing pipe (72-2-m-3), the m-th afterburning ignition chamber (72-2-m-4), the m-th afterburning ignition observation window (72-2-m-5), the m-th afterburning air pipe (72-2-m-6), the m-th afterburning air electric valve (72-2-m-7), the m-th afterburning electric igniter (72-2-m-8), the m-th afterburning gas pipe (72-2-m-9), and the m-th afterburning gas electric valve (72-2-m-10). The afterburning device (72-2) has m afterburning branch circuits, an afterburning mixing pipe, an afterburning ignition chamber, an afterburning air pipe, an afterburning air electric valve, an afterburning electric igniter, an afterburning gas pipe, and an afterburning gas electric valve; where m is a natural number.

[0008] The axis of the first supplementary combustion branch circuit (72-2-1-2) coincides with the first equal pressure line of flue gas (72-1-1), and the first supplementary combustion branch circuit (72-2-1-2) is a connected circuit;

[0009] The axis of the first afterburning nozzle (72-2-1-1) is along the flue gas flow direction and perpendicular to the axis of the first afterburning branch circuit (72-2-1-2). The first afterburning nozzle (72-2-1-1) is connected to the first afterburning branch circuit (72-2-1-2). Multiple first afterburning nozzles (72-2-1-1) are evenly arranged along the axis of the first afterburning branch circuit (72-2-1-2).

[0010] The axis of the first afterburning mixing pipe (72-2-1-3) is connected to the axis of the first afterburning branch pipe circuit (72-2-1-2), and the first afterburning mixing pipe (72-2-1-3) and the first afterburning branch pipe circuit (72-2-1-2) are connected in a continuous manner;

[0011] The symmetry line of the first afterburning ignition chamber (72-2-1-4) is connected in the same direction as the axis of the first afterburning mixing pipe (72-2-1-3), and the first afterburning ignition chamber (72-2-1-4) and the first afterburning mixing pipe (72-2-1-3) are connected in a through manner;

[0012] The first afterburning observation window (72-2-1-5) is set on at least one side of the first afterburning chamber (72-2-1-4), and the way and number of the window are set are to facilitate observation of the ignition situation in the first afterburning chamber (72-2-1-4).

[0013] The axis of the first afterburning air pipe (72-2-1-6) is obliquely connected to the symmetrical line of the first afterburning ignition chamber (72-2-1-4), and the first afterburning air pipe (72-2-1-6) and the first afterburning ignition chamber (72-2-1-4) are obliquely connected; a first afterburning air electric valve (72-2-1-7) is provided on the first afterburning air pipe (72-2-1-6) to control the air flow.

[0014] The axis of the first supplementary combustion gas pipe (72-2-1-9) is connected in the same direction as the symmetrical line of the first supplementary combustion ignition chamber (72-2-1-4). The first supplementary combustion gas pipe (72-2-1-9) is inserted into the first supplementary combustion ignition chamber (72-2-1-4) for a certain length and then connected to it. The first supplementary combustion gas pipe (72-2-1-9) is equipped with a first supplementary combustion gas electric valve (72-2-1-10) to control the gas flow rate.

[0015] The first supplementary combustion electric igniter (72-2-1-8) is connected at one end to the wall of the first supplementary combustion gas pipe (72-2-1-9) via a wire, and at the other end is equipped with at least one ignition probe. One end of the ignition probe is connected to the first supplementary combustion electric igniter (72-2-1-8) via a wire, and the other end is not in contact with the opening of the first supplementary combustion gas pipe (72-2-1-9) after it has been inserted into the first supplementary combustion ignition chamber (72-2-1-4) for a certain length. The distance is suitable for generating an electric spark after being energized. The first supplementary combustion electric igniter (72-2-1-8) is equipped with a low-voltage power supply.

[0016] The axis of the m-th supplementary combustion branch circuit (72-2-m-2) coincides with the m-th isobaric line of the flue gas (72-1-m), and the m-th supplementary combustion branch circuit (72-2-m-2) is a connected circuit;

[0017] The axis of the m-th afterburning nozzle (2-m-1) is along the flue gas flow direction and perpendicular to the axis of the m-th afterburning branch circuit (72-2-m-2). The m-th afterburning nozzle (2-m-1) is connected to the m-th afterburning branch circuit (72-2-m-2). Multiple m-th afterburning nozzles (2-m-1) are evenly arranged along the axis of the m-th afterburning branch circuit (72-2-m-2).

[0018] The axis of the m-th supplementary combustion mixing pipe (72-2-m-3) is connected to the axis of the m-th supplementary combustion branch pipe circuit (72-2-m-2), and the m-th supplementary combustion mixing pipe (72-2-m-3) and the m-th supplementary combustion branch pipe circuit (72-2-m-2) are connected in a continuous manner;

[0019] The symmetry line of the m-th afterburning ignition chamber (72-2-m-4) is connected in the same direction as the axis of the m-th afterburning mixing pipe (72-2-m-3), and the m-th afterburning ignition chamber (72-2-m-4) and the m-th afterburning mixing pipe (72-2-m-3) are connected in a through manner;

[0020] The m-th afterburning ignition observation window (72-2-m-5) is set on at least one side of the m-th afterburning ignition chamber (72-2-m-4), and the way and number of its setting are based on the need to observe the ignition situation in the m-th afterburning ignition chamber (72-2-m-4);

[0021] The axis of the m-th supplementary combustion air pipe (72-2-m-6) intersects the symmetry line of the m-th supplementary combustion ignition chamber (72-2-m-4) and is obliquely connected; the m-th supplementary combustion air pipe (72-2-m-6) and the m-th supplementary combustion ignition chamber (72-2-m-4) are obliquely connected; the m-th supplementary combustion air pipe (72-2-m-6) is equipped with an m-th supplementary combustion air electric valve (72-2-m-7) to control the air flow.

[0022] The axis of the m-th supplementary combustion gas pipe (72-2-m-9) is connected in the same direction as the symmetry line of the m-th supplementary combustion ignition chamber (72-2-m-4). The m-th supplementary combustion gas pipe (72-2-m-9) is inserted into the m-th supplementary combustion ignition chamber (72-2-m-4) for a certain length and then connected to it. The m-th supplementary combustion gas pipe (72-2-m-9) is equipped with an m-th supplementary combustion gas electric valve (72-2-m-10) to control the gas flow rate.

[0023] The m-th supplementary combustion electric igniter (72-2-m-8) is connected at one end to the wall of the m-th supplementary combustion gas pipe (72-2-m-9) via a wire, and at the other end is equipped with at least one ignition probe. One end of the ignition probe is connected to the m-th supplementary combustion electric igniter (72-2-m-8) via a wire, and the other end is not in contact with the opening of the m-th supplementary combustion gas pipe (72-2-m-9) after it has been inserted into the m-th supplementary combustion ignition chamber (72-2-m-4) for a certain length. The distance is suitable for generating an electric spark after being energized. The m-th supplementary combustion electric igniter (72-2-m-8) is equipped with a low-voltage power supply.

[0024] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized by: including a flue gas internal supplementary combustion and external ignition system (72), wherein the flue gas internal supplementary combustion and external ignition system (72) includes at least one supplementary combustion device (72-2), at least one supplementary combustion and ignition video monitor (72-7), at least one supplementary combustion nozzle combustion observation window (72-3), at least one supplementary combustion nozzle combustion observation video monitor (72-6), a flue gas temperature and pressure measuring instrument before supplementary combustion (72-4), and a flue gas temperature and pressure measuring instrument after supplementary combustion (72-5);

[0025] Along the direction of the flue gas, at least one hole is opened on the flue wall downstream of the combustion device (72-2), and a combustion observation window (72-3) for the combustion of the combustion nozzle is embedded in each hole; the combustion observation video monitor (72-6) for the combustion of the combustion nozzle is arranged at a certain position outside the flue, and its position and number are determined so as to be able to observe the combustion of all combustion nozzles.

[0026] An instrument for measuring the temperature and pressure of flue gas before combustion (72-4) is arranged upstream of the combustion device (72-2), with its probe inserted into the flue through the flue wall in the radial direction of the flue.

[0027] A flue gas temperature and pressure measuring instrument (72-5) is arranged downstream of the afterburning device (72-2). Its probe passes through the flue wall and is inserted into the flue along the radial direction of the flue. It can be arranged upstream or downstream of the combustion observation window (72-6) of the afterburning nozzle. When it is arranged upstream of the combustion observation window (72-6) of the afterburning nozzle, it should be arranged so as not to affect the observation of the combustion of the afterburning nozzle.

[0028] The aforementioned afterburning ignition video monitor (72-7) is arranged at a certain position outside the flue. The position and number of the monitor are determined so that the ignition situation inside the afterburning ignition chamber of all afterburning devices can be observed.

[0029] The combustion nozzle, combustion branch circuit and part of the combustion mixing pipe in the combustion device (72-2) are arranged inside the flue and connected to the inner wall of the flue through a support structure; the combustion mixing pipe in the combustion device passes through the flue wall in the radial direction of the flue.

[0030] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized in that: it includes a supplementary combustion type flue gas molten salt heat exchange and denitrification integrated device, wherein the supplementary combustion type flue gas molten salt heat exchange and denitrification integrated device includes a supplementary combustion system (72) or a supplementary combustion device (72-2), a primary flue gas molten salt heat exchange component (73-1), a flue gas denitrification component (74) and a tertiary flue gas molten salt heat exchange component (73-3).

[0031] The burner system (72) is connected to the first-stage flue gas molten salt heat exchange assembly (73-1) via the flue gas pipeline (60); the first-stage flue gas molten salt heat exchange assembly (73-1) is connected to the flue gas denitrification assembly (74) via the flue gas pipeline (60); and the flue gas denitrification assembly (74) is connected to the third-stage flue gas molten salt heat exchange assembly (73-3) via the flue gas pipeline (60).

[0032] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized in that: it includes a supplementary combustion type flue gas purification molten salt heat exchange integrated device, wherein the supplementary combustion type flue gas purification molten salt heat exchange integrated device includes a supplementary combustion system (72) or a supplementary combustion device (72-2), a primary flue gas molten salt heat exchange component (73-1), a flue gas decarbonization component (75), a secondary flue gas molten salt heat exchange component (73-2), a flue gas denitrification component (74), and a tertiary flue gas molten salt heat exchange component (73-3).

[0033] The burner system (72) is connected to the primary flue gas molten salt heat exchange assembly (73-1) via flue gas pipeline (60); the primary flue gas molten salt heat exchange assembly (73-1) is connected to the flue gas decarbonization assembly (75) via flue gas pipeline (60); the flue gas decarbonization assembly (75) is connected to the secondary flue gas molten salt heat exchange assembly (73-2) via flue gas pipeline (60); the secondary flue gas molten salt heat exchange assembly (73-2) is connected to the flue gas denitrification assembly (74) via flue gas pipeline (60); the flue gas denitrification assembly (74) is connected to the tertiary flue gas molten salt heat exchange assembly (73-3) via flue gas pipeline (60); the positions of the flue gas denitrification assembly (74) and the flue gas decarbonization assembly (75) can be interchanged, and the secondary flue gas molten salt heat exchange assembly (73-2) is no longer installed when interchanged.

[0034] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized by including a gas turbine power generation system (10), a power transmission and transformation system (30), a molten salt thermal storage system (70), a steam power generation system (80), and a waste heat exchanger (110).

[0035] The gas turbine power generation system (10) is connected to the molten salt thermal storage system (70) through the flue gas pipeline (60); the molten salt thermal storage system (70) is connected to the waste heat exchanger (110) through the flue gas pipeline (60); the gas turbine power generation system (10) is connected to the power transmission and transformation system (30) through the cable (50); the molten salt thermal storage system (70) is connected to the steam power generation system (80) through the main steam pipeline (90) and the return water pipeline (100); the steam power generation system (80) is connected to the power transmission and transformation system (30) through the cable (50);

[0036] The molten salt thermal storage system (70) includes a high-temperature molten salt storage tank (70-1), a low-temperature molten salt storage tank (70-2), a molten salt heating device (70-3), a molten salt industrial steam generating device (70-4), a molten salt high-temperature and high-pressure steam generating device (70-5), and a combustion-type flue gas molten salt heat exchange integrated device (71).

[0037] The molten salt outlet of the low-temperature molten salt storage tank (70-2) is connected to the molten salt inlet of the combustion-type flue gas molten salt heat exchanger (71) via a molten salt pipeline (70-0); the molten salt outlet of the combustion-type flue gas molten salt heat exchanger (71) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) via a molten salt pipeline (70-0); the three molten salt outlets of the high-temperature molten salt storage tank (70-1) are respectively connected to... The molten salt inlets of the molten salt heating device (70-3), the molten salt industrial steam generating device (70-4), and the molten salt high-temperature and high-pressure steam generating device (70-5) are connected; the molten salt outlets of the molten salt heating device (70-3), the molten salt industrial steam generating device (70-4), and the molten salt high-temperature and high-pressure steam generating device (70-5) are respectively connected to the three molten salt inlets of the low-temperature molten salt storage tank (70-2) through molten salt pipelines (70-0);

[0038] The integrated flue gas molten salt heat exchange device (71) includes a burner system (72), a primary flue gas molten salt heat exchange component (73-1), a secondary flue gas molten salt heat exchange component (73-2), a tertiary flue gas molten salt heat exchange component (73-3), an SCR flue gas denitrification component (74), and / or a flue gas decarbonization component (75).

[0039] The aforementioned integrated flue gas molten salt heat exchange and denitrification device for supplementary combustion has a supplementary combustion system (72) arranged near the flue gas inflow point of the integrated flue gas molten salt heat exchange device (71). Following the direction of flue gas inflow: the supplementary combustion system (72) is connected to the primary flue gas molten salt heat exchange assembly (73-1) via a flue gas pipeline (60); the primary flue gas molten salt heat exchange assembly (73-1) is connected to the SCR flue gas denitrification assembly (74) via a flue gas pipeline (60); and the SCR flue gas denitrification assembly (74) is connected to the tertiary flue gas molten salt heat exchange assembly via a flue gas pipeline (60). The heat exchange assembly (73-3) is connected; the molten salt inlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0); the molten salt outlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt inlet of the primary flue gas molten salt heat exchange assembly (73-1) through the molten salt pipeline (70-0); the molten salt outlet of the primary flue gas molten salt heat exchange assembly (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0).

[0040] The aforementioned integrated combustion-type flue gas purification molten salt heat exchange device has a combustion-type system (72) arranged near the flue gas inflow point of the integrated combustion-type flue gas molten salt heat exchange device (71). Following the direction of flue gas inflow: the combustion-type system (72) is connected to the primary flue gas molten salt heat exchange assembly (73-1) via a flue gas pipeline (60); the primary flue gas molten salt heat exchange assembly (73-1) is connected to the flue gas decarbonization assembly (75) via a flue gas pipeline (60); the flue gas decarbonization assembly (75) is connected to the secondary flue gas molten salt heat exchange assembly (73-2) via a flue gas pipeline (60); the secondary flue gas molten salt heat exchange assembly (73-2) is connected to the SCR flue gas denitrification assembly (74) via a flue gas pipeline (60); and the SCR flue gas denitrification assembly (74) is connected to the SCR flue gas denitrification assembly (74) via a flue gas pipeline. (60) Connected to the tertiary flue gas molten salt heat exchange assembly (73-3); the molten salt inlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0); the molten salt outlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt inlet of the secondary flue gas molten salt heat exchange assembly (73-2) through the molten salt pipeline (70-0); the molten salt outlet of the secondary flue gas molten salt heat exchange assembly (73-2) is connected to the molten salt inlet of the primary flue gas molten salt heat exchange assembly (73-1) through the molten salt pipeline (70-0); the molten salt outlet of the primary flue gas molten salt heat exchange assembly (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0).

[0041] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized in that: the power transmission and transformation system (30) is connected to the external power grid (40) through a cable (50);

[0042] The electricity generated by the gas turbine power generation system (10) is transmitted through the power transmission and transformation system (30) via the cable (50) to the external power grid (40).

[0043] The flue gas discharged from the gas turbine power generation system (10) passes through the flue gas pipeline (60) and then passes through the combustion-type flue gas molten salt heat exchange integrated device (71) and the waste heat exchanger (110) in sequence, and then becomes exhaust gas (2) before being discharged into the air;

[0044] The electricity generated by the steam power generation system (80) is transmitted through the power transmission and transformation system (30) via the cable (50) to the external power grid (40).

[0045] The external heating demand (130) is connected to the molten salt heating device (70-3) through a heat pipe (120);

[0046] The external industrial steam demand (140) is connected to the molten salt industrial steam generating unit (70-4) via a heat pipeline (120).

[0047] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized by:

[0048] The first isobaric line (72-1-1) to the m-th isobaric line (72-1-m) selected at the flue section are evenly distributed at this section; the flue gas pressure is the same on the same isobaric line; the positions of the first isobaric line (72-1-1) to the m-th isobaric line (72-1-m) are obtained through numerical simulation calculation;

[0049] The inner contour line (72-1-0) of the flue section can be a circle, a square, or a multi-segment closed broken line;

[0050] The gas inside the m-th supplementary combustion gas pipe (72-2-m-9) is a combustible gas, an atomized combustible gas-liquid mixture, an atomized combustible gas-powder mixture, or an atomized combustible gas-liquid-powder mixture;

[0051] The internal profile of all the afterburning nozzles in the afterburning device (72-2) is a hyperbola.

[0052] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized in that: the working process of the flue gas internal supplementary combustion and external ignition system (72) is as follows:

[0053] The flue gas first passes through the pre-combustion flue gas temperature and pressure measuring instrument (72-4) upstream of the combustion device (72-2) to measure the pre-combustion flue gas temperature and pressure values. The pre-combustion flue gas temperature and pressure values ​​are then transmitted to the combustion intelligent control system via a transmitter for backup.

[0054] When the flue gas passes through the combustion device (72-2), it is heated by the combustion device (72-2) and continues to flow downstream; the combustion observation video monitor (72-6) of the combustion nozzle records the combustion status of all nozzles in the combustion device (72-2) through the combustion observation window (72-3), and the video signal is transmitted to the combustion intelligent control system through the video signal line. The result is analyzed and processed by AI technology and stored for later use.

[0055] After the flue gas is re-burned by the re-burning device (72-2), the flue gas temperature and pressure are measured by the flue gas temperature and pressure measuring instrument (72-5). The flue gas temperature and pressure values ​​are then transmitted to the re-burning intelligent control system via a transmitter for backup.

[0056] The following data are processed by AI technology: the pre-combustion flue gas temperature and pressure values, post-combustion flue gas temperature and pressure values, combustion status of all nozzles in the combustion device (72-2) recorded by the combustion observation video monitor (72-6) stored in the combustion intelligent control system, the ignition status of all combustion ignition chambers in the combustion device (72-2) recorded by the combustion ignition video monitor (72-7) stored in the combustion intelligent control system, and the first combustion air electric valve (72-2-1-7), the first combustion electric igniter (72-2-1-8), the first combustion gas electric valve (72-2-1-10), the m-th combustion air electric valve (72-2-m-7), the m-th combustion electric igniter (72-2-m-8), and the m-th combustion gas electric valve (72-2-m-10) are linked together, and the control logic is executed by the algorithm in the combustion intelligent control system.

[0057] When the flue gas requires re-combustion, the re-combustion device (72-2) proceeds from ignition to normal operation as follows:

[0058] When the flue gas needs to be supplemented with combustion, the algorithm in the supplementation combustion intelligent control system issues a command to open the first supplementation air electric valve (72-2-1-7) and / or the mth supplementation air electric valve (72-2-m-7), and after 1~2 seconds;

[0059] The algorithm in the supplementary combustion intelligent control system issues instructions to open the first supplementary combustion electric igniter (72-2-1-8) and the first supplementary combustion gas electric valve (72-2-1-10) simultaneously, and / or the mth supplementary combustion electric igniter (72-2-m-8) and the mth supplementary combustion gas electric valve (72-2-m-10) simultaneously;

[0060] At this time, the mixture in the first supplementary combustion ignition observation window (72-2-1-5) and / or the mth supplementary combustion ignition observation window (72-2-m-5) can be observed to have been ignited. This ignition video information is recorded by the supplementary combustion ignition video monitor (72-7) and then transmitted to the supplementary combustion intelligent control system for storage. The video information of the ignition status of all supplementary combustion ignition chambers in the supplementary combustion device (72-2) is analyzed and processed by AI technology, and the result is the value representing the ignition. After receiving this value, the algorithm in the supplementary combustion intelligent control system issues an instruction to shut down the first supplementary combustion electric igniter (72-2-1-8) and / or the mth supplementary combustion electric igniter (72-2-m-8).

[0061] At the same time, the algorithm in the supplementary combustion intelligent control system issues a command to increase the opening of the first supplementary combustion air electric valve (72-2-1-7) and the first supplementary combustion gas electric valve (72-2-1-10), and / or the mth supplementary combustion air electric valve (72-2-m-7) and the mth supplementary combustion gas electric valve (72-2-m-10), that is, to increase the flow rate;

[0062] At this time, the flow rate of the mixed gas entering the first afterburning ignition chamber (72-2-1-4) and / or the m-th afterburning ignition chamber (72-2-m-4) gradually increases. The flow ratio of air to fuel gas in the mixed gas is controlled by an algorithm, so that the flame flows forward with the flow of the mixed gas. The flame enters through the first afterburning mixing pipe (72-2-1-3) and the first afterburning branch pipe circuit (72-2-1-2) in sequence and is ejected from all the first afterburning nozzles (72-2-1-1), and / or enters through the m-th afterburning mixing pipe (72-2-m-3) and the m-th afterburning branch pipe circuit (72-2-m-2) in sequence and is ejected from all the m-th afterburning nozzles (72-2-m-1).

[0063] At this time, the combustion status of the gas mixture in all the combustion nozzles of the combustion device (72-2) can be observed in the combustion observation window (72-3). This combustion status video information is recorded by the combustion observation video monitor (72-6) and then transmitted to the combustion intelligent control system for storage. The result of the combustion status video information of all the gas mixture in the combustion device (72-2) after being analyzed and processed by AI technology is the value representing the ignition. After receiving this value, the algorithm in the combustion intelligent control system issues an instruction to maintain the current opening degree of the first combustion air electric valve (72-2-1-7) and the first combustion gas electric valve (72-2-1-10), and / or the mth combustion air electric valve (72-2-m-7) and the mth combustion gas electric valve (72-2-m-10); then the combustion system is in normal operation.

[0064] The pre-combustion flue gas temperature and pressure values ​​and post-combustion flue gas temperature and pressure values, which are stored in the intelligent combustion control system, are analyzed and processed by AI technology as a reference for judging whether the combustion system is operating normally.

[0065] Furthermore, the working principle of the afterburning device (72-2) to achieve more uniform and efficient afterburning heat transfer within the flue gas is as follows:

[0066] Because, firstly, the flue gas pressure is the same on the same isobar; secondly, the axis of the first supplementary combustion branch circuit (72-2-1-2) coincides with the first isobaric line of the flue gas (72-1-1), and the first supplementary combustion branch circuit (72-2-1-2) is a continuous circuit; the axis of the first supplementary combustion nozzle (72-2-1-1) is along the flue gas flow direction and perpendicular to the axis of the first supplementary combustion branch circuit (72-2-1-2), and the first supplementary combustion nozzle (72-2-1-1) is connected to the first supplementary combustion branch circuit (72-2-1-2), and / or the m-th supplementary combustion branch circuit (72-2-1-2) is connected to the first supplementary combustion branch circuit (72-2-1-2). The axis of the m-2 isobaric line of the flue gas (72-1-m) coincides with the m-th isobaric line of the flue gas. The m-th supplementary combustion branch circuit (72-2-m-2) is a continuous circuit. The axis of the m-th supplementary combustion nozzle (72-2-m-1) is along the flue gas flow direction and perpendicular to the axis of the m-th supplementary combustion branch circuit (72-2-m-2). The m-th supplementary combustion nozzle (72-2-m-1) is connected to the m-th supplementary combustion branch circuit (72-2-m-2). Therefore, the above arrangement can ensure that the pressure at each supplementary combustion nozzle is the same, thereby ensuring that the supplementary combustion mixture can reach all supplementary combustion nozzles evenly for combustion.

[0067] Firstly, the first isobaric line (72-1-1) and the m-th isobaric line (72-1-m) of the flue gas selected at the flue section are evenly distributed at that section; secondly, multiple first combustion nozzles (72-2-1-1) are evenly arranged along the axis of the first combustion branch circuit (72-2-1-2), and / or multiple m-th combustion nozzles (72-2-m-1) are evenly arranged along the axis of the m-th combustion branch circuit (72-2-m-2); therefore, the above arrangement can ensure that the heat distribution of combustion on the flue section is relatively uniform.

[0068] In the aforementioned afterburning device (72-2), the internal cross-sectional profile of all afterburning nozzles is a hyperbola. This structure not only improves the combustion efficiency of the gas mixture but also enhances the heat transfer efficiency of the flue gas after combustion. The lower part decreases in size, which increases the kinetic energy of the flue gas and improves the exhaust velocity; the upper part increases in size, gradually diffusing into the original flue gas, which reduces the exhaust resistance of the flue gas generated by afterburning.

[0069] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized in that: the gas turbine refers to a system that generates electricity by burning substances, and the substances include combustible gases such as natural gas, methane, hydrogen, ammonia, and organic gases, combustible liquids such as gasoline, diesel, alcohol, and synthetic organic oils, and combustible solids such as coal and organic solids.

[0070] Furthermore, a gas and steam power generation supplementary combustion type thermoelectric decoupling system and its working mechanism are characterized in that: the specific implementation and operation process of the technical solution is as follows:

[0071] The electricity generated by the gas turbine is transmitted through the power transmission and transformation system (30) via the cable (50) to the external power grid (40).

[0072] Waste heat storage process: After the gas turbine generates electricity, the flue gas enters the combustion-type flue gas molten salt heat exchange integrated device (71), where the flue gas exchanges heat with low temperature molten salt. The waste heat in the flue gas heats the low temperature molten salt into high temperature molten salt. Under the action of the molten salt pump, the high temperature molten salt enters the high temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0). The flue gas that has exchanged heat with the molten salt passes through the waste heat exchanger (110) for further heat exchange and becomes exhaust flue gas (20) which is discharged into the air.

[0073] The process of generating electricity through heat release is as follows: under the action of the molten salt pump, the high-temperature molten salt enters the molten salt high-temperature and high-pressure steam generating device (70-5) through the molten salt pipeline (70-0). In the device, the high-temperature molten salt exchanges heat with water, turning the water into high-temperature and high-pressure steam. The high-temperature and high-pressure steam enters the steam power generation system (80) through the main steam pipeline (90) to generate electricity. The generated electricity is transmitted through the cable (50) and then through the power transmission and transformation system (30) to the external power grid (40). The high-temperature and high-pressure steam that has generated electricity becomes low-pressure steam and / or condensate and returns to the molten salt heat storage system (70) through the return water pipeline (100). After heat exchange, the high-temperature molten salt becomes low-temperature molten salt, which enters the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0) under the action of the molten salt pump.

[0074] The heat release and heating process is realized as follows: under the action of the molten salt pump, the high-temperature molten salt enters the molten salt heating device (70-3) and the molten salt industrial steam generating device (70-4) through the molten salt pipeline (70-0). In the device, the high-temperature molten salt exchanges heat with water. The hot water or steam generated after the water heat exchange is respectively delivered through the heat pipeline (120) to meet the external heating demand (130) and the external industrial steam demand (140). After the high-temperature molten salt heats up, it becomes low-temperature molten salt, which enters the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0) under the action of the molten salt pump.

[0075] Achieving complete decoupling of thermoelectricity: Decoupling of heat storage and gas turbine power generation, because the heat energy of the molten salt thermal storage system (70) comes from the residual heat of the flue gas after the gas turbine generates electricity and the heat energy generated by the supplementary combustion of the supplementary combustion system (72), thus decoupling the coupling relationship between heat storage and gas turbine power generation; Decoupling of heat supply and gas turbine power generation, because the heat energy of the molten salt thermal storage system (70) comes from the residual heat of the flue gas after the gas turbine generates electricity and the heat energy generated by the supplementary combustion of the supplementary combustion system (72), heat release includes heat release power generation and heat release power supply, heat release power generation and heat release power supply operate independently, thus decoupling the coupling relationship between heat supply and gas turbine power generation.

[0076] Compared with the prior art, the present invention has the following advantages and outstanding technical effects:

[0077] ① To achieve more uniform and efficient combustion and heat transfer within the flue gas;

[0078] ② It achieves a safer ignition method for supplementary combustion gas or atomized supplementary combustion liquid (or gas-powder) mixture outside the flue; and it also enables more convenient monitoring of the supplementary combustion situation;

[0079] ③ To achieve the purification functions of denitrification and decarbonization of flue gas;

[0080] ④ Achieve complete decoupling of thermoelectricity in the gas turbine power generation, heating and energy storage system, enabling the system to independently supply power, store heat or provide heat. Attached Figure Description

[0081] Figure 1 This is a schematic diagram of the structure of a traditional gas turbine waste heat boiler power generation and heating system;

[0082] Figure 2 This is a schematic diagram of the thermoelectric decoupling system for gas and steam power generation supplementary combustion type thermal storage and heating using the technical solution of this invention;

[0083] Figure 3 This is a schematic diagram of a combustion-type molten salt thermal storage and heating system.

[0084] Figure 4 This is a schematic diagram of a molten salt heat exchanger for flue gas purification in a combustion-type process.

[0085] Figure 5 This is a schematic diagram of a flue gas internal combustion supplementary combustion and external ignition supplementary combustion system;

[0086] Figure 6 This is a schematic diagram of a combustion chamber.

[0087] Figure 7 This is a schematic diagram of a nozzle structure;

[0088] In the diagram: 10. Gas turbine power generation system; 20. Exhaust flue gas; 30. Power transmission and distribution system; 40. External power grid; 50. Cable; 60. Flue gas pipeline; 70. Molten salt thermal storage system; 80. Steam power generation system; 90. Main steam pipeline; 100. Return water pipeline; 110. Waste heat exchanger; 120. Thermal pipeline; 130. External heating demand; 140. External industrial steam demand; 150. Waste heat boiler system.

[0089] 70-0 Molten salt pipeline; 70-1 High-temperature molten salt storage tank; 70-2 Low-temperature molten salt storage tank; 70-3 Molten salt heating device; 70-4 Molten salt industrial steam generator; 70-5 Molten salt high-temperature and high-pressure steam generator; 71 Supplementary combustion type flue gas molten salt heat exchange integrated device; 72 Supplementary combustion system; 73-1 Primary flue gas molten salt heat exchange component; 73-2 Secondary flue gas molten salt heat exchange component; 73-3 Tertiary flue gas molten salt heat exchange component; 74 SCR flue gas denitrification component; 75 Flue gas decarbonization component;

[0090] 72-3. Combustion observation window of the afterburning nozzle; 72-4. Flue gas temperature and pressure measuring instrument before afterburning; 72-5. Flue gas temperature and pressure measuring instrument after afterburning; 72-6. Combustion observation video monitor of the afterburning nozzle; 72-7. Afterburning ignition video monitor; 72-2. Afterburning device; 72-1-0. Inner contour line of flue section; 72-1-1. First isobaric line of flue gas; 72-1-m. Mth isobaric line of flue gas; 72-2-1-1. First afterburning nozzle; 72-2-1-2. First afterburning branch circuit; 72-2-1-3. First afterburning mixing pipe; 72-2-1-4. First afterburning ignition chamber; 72-2-1-5. First afterburning ignition observation window; 72-2-1-6. First afterburning air pipe; 72-2-1 -7. First supplementary combustion air electric valve; 72-2-1-8. First supplementary combustion electric igniter; 72-2-1-9. First supplementary combustion gas pipe; 72-2-1-10. First supplementary combustion gas electric valve; 72-2-m-1. m-th supplementary combustion nozzle; 72-2-m-2. m-th supplementary combustion branch circuit; 72-2-m-3. m-th supplementary combustion mixing pipe; 72-2-m-4. m-th supplementary combustion ignition chamber; 72-2-m-5. m-th supplementary combustion ignition observation window; 72-2-m-6. m-th supplementary combustion air pipe; 72-2-m-7. m-th supplementary combustion air electric valve; 72-2-m-8. m-th supplementary combustion electric igniter; 72-2-m-9. m-th supplementary combustion gas pipe; 72-2-m-10. m-th supplementary combustion gas electric valve; where m is a natural number. Detailed Implementation

[0091] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0092] like Figure 1The schematic diagram of the structure of the gas turbine waste heat boiler power generation and heating system is shown. The gas turbine waste heat boiler power generation and heating system includes a gas turbine power generation system (10), a power transmission and transformation system (30), an external power grid (40), a steam power generation system (80), external heating demand (130), external industrial steam demand (140), and a waste heat boiler system (150).

[0093] The gas turbine power generation system (10) is connected to the external power grid (40) via the power transmission and transformation system (30) through the cable (50); the gas turbine power generation system (10) is connected to the waste heat boiler system (150) through the flue gas pipeline (60); the waste heat boiler system (150) is connected to the steam power generation system (80) through the main steam pipeline (90) and the return water pipeline (100); the steam power generation system (80) is connected to the power transmission and transformation system (30) through the cable (50).

[0094] The aforementioned gas turbine waste heat boiler power generation and heating system is a commonly used and mature technology solution. However, this technology solution has the problem of thermoelectric coupling and cannot achieve energy storage and independent external heating or power supply.

[0095] like Figure 2 A schematic diagram of the thermoelectric decoupling system for gas and steam power generation supplementary combustion thermal storage and heating using the technical solution of this invention. Figure 3 A schematic diagram of the structure of a combustion-type molten salt thermal storage and heating system and Figure 4 A schematic diagram of a combustion-type flue gas purification molten salt heat exchanger is shown. The thermal-electric decoupling system of the gas and steam power generation combustion-type heat storage and heating in this invention uses a molten salt heat storage system (70) to replace the waste heat boiler system (150). At the same time, a combustion-type flue gas molten salt heat exchanger integrated device (71) is added to the molten salt heat storage system (70). The heat in the flue gas can be increased by combustion in the flue gas and the heat energy can be stored in the molten salt heat storage system (70). Thus, the thermal-electric decoupling of the gas turbine power generation and heating energy storage system is realized, and the system can independently supply power, store heat or provide heat.

[0096] The aforementioned gas and steam power generation supplementary combustion type thermal storage and heating decoupling system includes a gas turbine power generation system (10), a power transmission and transformation system (30), a molten salt thermal storage system (70), a steam power generation system (80), and a waste heat exchanger (110).

[0097] The gas turbine power generation system (10) is connected to the molten salt thermal storage system (70) through the flue gas pipeline (60); the molten salt thermal storage system (70) is connected to the waste heat exchanger (110) through the flue gas pipeline (60); the gas turbine power generation system (10) is connected to the power transmission and transformation system (30) through the cable (50); the molten salt thermal storage system (70) is connected to the steam power generation system (80) through the main steam pipeline (90) and the return water pipeline (100); the steam power generation system (80) is connected to the power transmission and transformation system (30) through the cable (50).

[0098] The molten salt thermal storage system (70) includes a high-temperature molten salt storage tank (70-1), a low-temperature molten salt storage tank (70-2), a molten salt heating device (70-3), a molten salt industrial steam generating device (70-4), a molten salt high-temperature and high-pressure steam generating device (70-5), and a combustion-type flue gas molten salt heat exchange integrated device (71).

[0099] The molten salt outlet of the low-temperature molten salt storage tank (70-2) is connected to the molten salt inlet of the combustion-type flue gas molten salt heat exchanger (71) via a molten salt pipeline (70-0); the molten salt outlet of the combustion-type flue gas molten salt heat exchanger (71) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) via a molten salt pipeline (70-0); the three molten salt outlets of the high-temperature molten salt storage tank (70-1) are respectively connected to... The molten salt inlets of the molten salt heating device (70-3), the molten salt industrial steam generating device (70-4), and the molten salt high-temperature and high-pressure steam generating device (70-5) are connected; the molten salt outlets of the molten salt heating device (70-3), the molten salt industrial steam generating device (70-4), and the molten salt high-temperature and high-pressure steam generating device (70-5) are respectively connected to the three molten salt inlets of the low-temperature molten salt storage tank (70-2) through molten salt pipelines (70-0).

[0100] The integrated flue gas molten salt heat exchange device (71) includes a burner system (72), a primary flue gas molten salt heat exchange component (73-1), a secondary flue gas molten salt heat exchange component (73-2), a tertiary flue gas molten salt heat exchange component (73-3), an SCR flue gas denitrification component (74), and / or a flue gas decarbonization component (75).

[0101] The aforementioned integrated flue gas molten salt heat exchange and denitrification device for supplementary combustion has a supplementary combustion system (72) arranged near the flue gas inflow point of the integrated flue gas molten salt heat exchange device (71). Following the direction of flue gas inflow: the supplementary combustion system (72) is connected to the primary flue gas molten salt heat exchange assembly (73-1) via a flue gas pipeline (60); the primary flue gas molten salt heat exchange assembly (73-1) is connected to the SCR flue gas denitrification assembly (74) via a flue gas pipeline (60); and the SCR flue gas denitrification assembly (74) is connected to the tertiary flue gas molten salt heat exchange assembly via a flue gas pipeline (60). The heat exchange assembly (73-3) is connected; the molten salt inlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0); the molten salt outlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt inlet of the primary flue gas molten salt heat exchange assembly (73-1) through the molten salt pipeline (70-0); the molten salt outlet of the primary flue gas molten salt heat exchange assembly (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0).

[0102] The aforementioned integrated combustion-type flue gas purification molten salt heat exchange device has a combustion-type system (72) arranged near the flue gas inflow point of the integrated combustion-type flue gas molten salt heat exchange device (71). Along the direction of flue gas inflow: the combustion-type system (72) is connected to the primary flue gas molten salt heat exchange assembly (73-1) via a flue gas pipeline (60); the primary flue gas molten salt heat exchange assembly (73-1) is connected to the flue gas decarbonization assembly (75) via a flue gas pipeline (60); the flue gas decarbonization assembly (75) is connected to the flue gas decarbonization assembly (75) via a flue gas pipeline... The pipeline (60) is connected to the secondary flue gas molten salt heat exchange component (73-2); the secondary flue gas molten salt heat exchange component (73-2) is connected to the SCR flue gas denitrification component (74) through the flue gas pipeline (60); the SCR flue gas denitrification component (74) is connected to the tertiary flue gas molten salt heat exchange component (73-3) through the flue gas pipeline (60); the positions of the flue gas denitrification component (74) and the flue gas decarbonization component (75) can be interchanged, and the secondary flue gas molten salt heat exchange component (73-2) is no longer installed when interchanged.

[0103] The molten salt inlet of the tertiary flue gas molten salt heat exchanger (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) via a molten salt pipeline (70-0); the molten salt outlet of the tertiary flue gas molten salt heat exchanger (73-3) is connected to the molten salt inlet of the secondary flue gas molten salt heat exchanger (73-2) via a molten salt pipeline (70-0); the molten salt outlet of the secondary flue gas molten salt heat exchanger (73-2) is connected to the molten salt inlet of the primary flue gas molten salt heat exchanger (73-1) via a molten salt pipeline (70-0); and the molten salt outlet of the primary flue gas molten salt heat exchanger (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) via a molten salt pipeline (70-0).

[0104] Waste heat storage process: After the gas turbine generates electricity, the flue gas enters the combustion-type flue gas molten salt heat exchange integrated device (71), where the flue gas exchanges heat with low temperature molten salt. The waste heat in the flue gas heats the low temperature molten salt into high temperature molten salt. Under the action of the molten salt pump, the high temperature molten salt enters the high temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0). The flue gas that has exchanged heat with the molten salt passes through the waste heat exchanger (110) for further heat exchange and becomes exhaust flue gas (20) which is discharged into the air.

[0105] The process of generating electricity through heat release is as follows: under the action of the molten salt pump, the high-temperature molten salt enters the molten salt high-temperature and high-pressure steam generating device (70-5) through the molten salt pipeline (70-0). In the device, the high-temperature molten salt exchanges heat with water, turning the water into high-temperature and high-pressure steam. The high-temperature and high-pressure steam enters the steam power generation system (80) through the main steam pipeline (90) to generate electricity. The generated electricity is transmitted through the cable (50) and the power transmission and transformation system (30) to the external power grid (40). The high-temperature and high-pressure steam that has generated electricity becomes low-pressure steam and / or condensate and returns to the molten salt heat storage system (70) through the return water pipeline (100). After heat exchange, the high-temperature molten salt becomes low-temperature molten salt, which enters the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0) under the action of the molten salt pump.

[0106] The heat release and heating process is achieved as follows: Under the action of the molten salt pump, the high-temperature molten salt enters the molten salt heating device (70-3) and the molten salt industrial steam generating device (70-4) through the molten salt pipeline (70-0). In the device, the high-temperature molten salt exchanges heat with water. The hot water or steam generated after the heat exchange is respectively delivered through the heat pipeline (120) to meet the external heating demand (130) and the external industrial steam demand (140). After the heat exchange, the high-temperature molten salt becomes low-temperature molten salt, which enters the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0) under the action of the molten salt pump.

[0107] Achieving complete decoupling of thermoelectricity: Decoupling of heat storage and gas turbine power generation, because the heat energy of the molten salt thermal storage system (70) comes from the residual heat of the flue gas after the gas turbine generates electricity and the heat energy generated by the supplementary combustion of the supplementary combustion system (72), thus decoupling the coupling relationship between heat storage and gas turbine power generation; Decoupling of heat supply and gas turbine power generation, because the heat energy of the molten salt thermal storage system (70) comes from the residual heat of the flue gas after the gas turbine generates electricity and the heat energy generated by the supplementary combustion of the supplementary combustion system (72), heat release includes heat release power generation and heat release power supply, heat release power generation and heat release power supply operate independently, thus decoupling the coupling relationship between heat supply and gas turbine power generation.

[0108] like Figure 5 A schematic diagram of a flue gas internal combustion and external ignition combustion system is shown.

[0109] The working process of the internal combustion and external ignition system (72) for flue gas is as follows:

[0110] The flue gas first passes through the pre-combustion flue gas temperature and pressure measuring instrument (72-4) upstream of the combustion device (72-2) to measure the pre-combustion flue gas temperature and pressure values. The pre-combustion flue gas temperature and pressure values ​​are then transmitted to the combustion intelligent control system via a transmitter for backup.

[0111] When the flue gas passes through the combustion device (72-2), it is heated by the combustion device (72-2) and continues to flow downstream; the combustion observation video monitor (72-6) of the combustion nozzle records the combustion status of all nozzles in the combustion device (72-2) through the combustion observation window (72-3), and the video signal is transmitted to the combustion intelligent control system through the video signal line. The result is analyzed and processed by AI technology and stored for later use.

[0112] After the flue gas is re-burned by the re-burning device (72-2), the flue gas temperature and pressure are measured by the flue gas temperature and pressure measuring instrument (72-5). The flue gas temperature and pressure values ​​are then transmitted to the re-burning intelligent control system via a transmitter for backup.

[0113] The following data are processed by AI technology: the pre-combustion flue gas temperature and pressure values ​​and the post-combustion flue gas temperature and pressure values ​​are stored in the intelligent combustion control system; the combustion status of all nozzles in the combustion device (72-2) recorded by the combustion observation video monitor (72-6) stored in the intelligent combustion control system is analyzed and processed by AI technology; the ignition status of all combustion chambers in the combustion device (72-2) recorded by the combustion ignition video monitor (72-7) stored in the intelligent combustion control system is analyzed and processed by AI technology; and the relationships between the first combustion air electric valve (72-2-1-7), the first combustion electric igniter (72-2-1-8), the first combustion gas electric valve (72-2-1-10), the m-th combustion air electric valve (72-2-m-7), the m-th combustion electric igniter (72-2-m-8), and the m-th combustion gas electric valve (72-2-m-10) are interlocked, and the control logic is executed by the algorithm in the intelligent combustion control system.

[0114] like Figure 6 A schematic diagram of the structure of a combustion device and Figure 7 A schematic diagram of a nozzle structure is shown.

[0115] When the flue gas requires re-combustion, the re-combustion device (72-2) proceeds from ignition to normal operation as follows:

[0116] When the flue gas needs to be supplemented with combustion, the algorithm in the supplementation combustion intelligent control system issues a command to open the first supplementation air electric valve (72-2-1-7) and / or the mth supplementation air electric valve (72-2-m-7), and after 1~2 seconds;

[0117] The algorithm in the supplementary combustion intelligent control system issues instructions to open the first supplementary combustion electric igniter (72-2-1-8) and the first supplementary combustion gas electric valve (72-2-1-10) simultaneously, and / or the mth supplementary combustion electric igniter (72-2-m-8) and the mth supplementary combustion gas electric valve (72-2-m-10) simultaneously;

[0118] At this time, the mixture in the first supplementary combustion ignition observation window (72-2-1-5) and / or the mth supplementary combustion ignition observation window (72-2-m-5) can be observed to have been ignited. This ignition video information is recorded by the supplementary combustion ignition video monitor (72-7) and then transmitted to the supplementary combustion intelligent control system for storage. The video information of the ignition status of all supplementary combustion ignition chambers in the supplementary combustion device (72-2) is analyzed and processed by AI technology, and the result is the value representing the ignition. After receiving this value, the algorithm in the supplementary combustion intelligent control system issues an instruction to shut down the first supplementary combustion electric igniter (72-2-1-8) and / or the mth supplementary combustion electric igniter (72-2-m-8).

[0119] At the same time, the algorithm in the supplementary combustion intelligent control system issues a command to increase the opening of the first supplementary combustion air electric valve (72-2-1-7) and the first supplementary combustion gas electric valve (72-2-1-10), and / or the mth supplementary combustion air electric valve (72-2-m-7) and the mth supplementary combustion gas electric valve (72-2-m-10), that is, to increase the flow rate;

[0120] At this time, the flow rate of the mixed gas entering the first afterburning ignition chamber (72-2-1-4) and / or the m-th afterburning ignition chamber (72-2-m-4) gradually increases. The flow ratio of air to fuel gas in the mixed gas is controlled by an algorithm, so that the flame flows forward with the flow of the mixed gas. The flame enters through the first afterburning mixing pipe (72-2-1-3) and the first afterburning branch pipe circuit (72-2-1-2) in sequence and is ejected from all the first afterburning nozzles (72-2-1-1), and / or enters through the m-th afterburning mixing pipe (72-2-m-3) and the m-th afterburning branch pipe circuit (72-2-m-2) in sequence and is ejected from all the m-th afterburning nozzles (72-2-m-1).

[0121] At this time, the combustion status of the gas mixture in all the combustion nozzles of the combustion device (72-2) can be observed in the combustion observation window (72-3). This combustion status video information is recorded by the combustion observation video monitor (72-6) and then transmitted to the combustion intelligent control system for storage. The result of the combustion status video information of all the gas mixture in the combustion device (72-2) after being analyzed and processed by AI technology is the value representing the ignition. After receiving this value, the algorithm in the combustion intelligent control system issues an instruction to maintain the current opening degree of the first combustion air electric valve (72-2-1-7) and the first combustion gas electric valve (72-2-1-10), and / or the mth combustion air electric valve (72-2-m-7) and the mth combustion gas electric valve (72-2-m-10); then the combustion system is in normal operation.

[0122] The pre-combustion flue gas temperature and pressure values ​​and post-combustion flue gas temperature and pressure values, which are stored in the intelligent combustion control system, are analyzed and processed by AI technology as a reference for judging whether the combustion system is operating normally.

[0123] The working principle of the afterburning device (72-2) to achieve more uniform and efficient afterburning and heat transfer within the flue gas is as follows:

[0124] Because, firstly, the flue gas pressure is the same on the same isobar; secondly, the axis of the first supplementary combustion branch circuit (72-2-1-2) coincides with the first isobaric line of the flue gas (72-1-1), and the first supplementary combustion branch circuit (72-2-1-2) is a continuous circuit; the axis of the first supplementary combustion nozzle (72-2-1-1) is along the flue gas flow direction and perpendicular to the axis of the first supplementary combustion branch circuit (72-2-1-2), and the first supplementary combustion nozzle (72-2-1-1) is connected to the first supplementary combustion branch circuit (72-2-1-2), and / or the m-th supplementary combustion branch circuit (72-2-1-2) is connected to the first supplementary combustion branch circuit (72-2-1-2). The axis of the m-2 isobaric line of the flue gas (72-1-m) coincides with the m-th isobaric line of the flue gas. The m-th supplementary combustion branch circuit (72-2-m-2) is a continuous circuit. The axis of the m-th supplementary combustion nozzle (72-2-m-1) is along the flue gas flow direction and perpendicular to the axis of the m-th supplementary combustion branch circuit (72-2-m-2). The m-th supplementary combustion nozzle (72-2-m-1) is connected to the m-th supplementary combustion branch circuit (72-2-m-2). Therefore, the above arrangement can ensure that the pressure at each supplementary combustion nozzle is the same, thereby ensuring that the supplementary combustion mixture can reach all supplementary combustion nozzles evenly for combustion.

[0125] Firstly, the first isobaric line (72-1-1) and the m-th isobaric line (72-1-m) of the flue gas selected at the flue section are evenly distributed at that section; secondly, multiple first combustion nozzles (72-2-1-1) are evenly arranged along the axis of the first combustion branch circuit (72-2-1-2), and / or multiple m-th combustion nozzles (72-2-m-1) are evenly arranged along the axis of the m-th combustion branch circuit (72-2-m-2); therefore, the above arrangement can ensure that the heat distribution of combustion on the flue section is relatively uniform.

[0126] In the aforementioned afterburning device (72-2), the internal cross-sectional profile of all afterburning nozzles is a hyperbola. This structure not only improves the combustion efficiency of the gas mixture but also enhances the heat transfer efficiency of the flue gas after combustion. The lower part decreases in size, which increases the kinetic energy of the flue gas and improves the exhaust velocity; the upper part increases in size, gradually diffusing into the original flue gas, which reduces the exhaust resistance of the flue gas generated by afterburning.

[0127] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. Any simple modifications, equivalent variations, and alterations made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A gas and steam power generation supplementary combustion type thermoelectric decoupling system, characterized in that: It includes at least one afterburning device (72-2), which is used to afterburn the exhaust gas generated after the gas turbine generates electricity; The cross-section of the high-temperature exhaust gas duct of the gas turbine has the first isobaric line (72-1-1) to the m-th isobaric line (72-1-m); the pressure of the flue gas on the same isobaric line is the same; the position of the first isobaric line (72-1-1) to the m-th isobaric line (72-1-m) is obtained by numerical simulation calculation; The afterburning device (72-2) includes at least one first afterburning nozzle (72-2-1-1), a first afterburning branch circuit (72-2-1-2), a first afterburning mixing pipe (72-2-1-3), a first afterburning ignition chamber (72-2-1-4), a first afterburning ignition observation window (72-2-1-5), a first afterburning air pipe (72-2-1-6), a first afterburning air electric valve (72-2-1-7), a first afterburning electric igniter (72-2-1-8), a first afterburning gas pipe (72-2-1-9), a first afterburning gas electric valve (72-2-1-10), at least one m-th afterburning nozzle (72-2-m-1), and the m-th afterburning branch circuit (72-2-1-2). The combustion device (72-2) comprises m combustion branch circuits, combustion mixing pipes (72-2-m-3), combustion ignition chambers (72-2-m-4), combustion ignition observation windows (72-2-m-5), combustion air pipes (72-2-m-6), combustion air electric valves (72-2-m-7), combustion electric igniters (72-2-m-8), combustion gas pipes (72-2-m-9), and combustion gas electric valves (72-2-m-10); the combustion device (72-2) consists of m combustion branch circuits, combustion mixing pipes, combustion ignition chambers, combustion air pipes, combustion air electric valves, combustion electric igniters, combustion gas pipes, and combustion gas electric valves; where m is a natural number. The axis of the first supplementary combustion branch circuit (72-2-1-2) coincides with the first equal pressure line of flue gas (72-1-1), and the first supplementary combustion branch circuit (72-2-1-2) is a connected circuit; The axis of the first afterburning nozzle (72-2-1-1) is along the flue gas flow direction and perpendicular to the axis of the first afterburning branch circuit (72-2-1-2). The first afterburning nozzle (72-2-1-1) is connected to the first afterburning branch circuit (72-2-1-2). Multiple first afterburning nozzles (72-2-1-1) are evenly arranged along the axis of the first afterburning branch circuit (72-2-1-2). The axis of the first afterburning mixing pipe (72-2-1-3) is connected to the axis of the first afterburning branch pipe circuit (72-2-1-2), and the first afterburning mixing pipe (72-2-1-3) and the first afterburning branch pipe circuit (72-2-1-2) are connected in a continuous manner; The symmetry line of the first afterburning ignition chamber (72-2-1-4) is connected in the same direction as the axis of the first afterburning mixing pipe (72-2-1-3), and the first afterburning ignition chamber (72-2-1-4) and the first afterburning mixing pipe (72-2-1-3) are connected in a through manner; The first afterburning observation window (72-2-1-5) is set on the first afterburning chamber (72-2-1-4), and its setting method and number are to facilitate the observation and determination of the ignition situation in the first afterburning chamber (72-2-1-4); The axis of the first afterburning air pipe (72-2-1-6) is obliquely connected to the symmetrical line of the first afterburning ignition chamber (72-2-1-4), and the first afterburning air pipe (72-2-1-6) and the first afterburning ignition chamber (72-2-1-4) are obliquely connected; a first afterburning air electric valve (72-2-1-7) is provided on the first afterburning air pipe (72-2-1-6) to control the air flow. The axis of the first supplementary combustion gas pipe (72-2-1-9) is connected in the same direction as the symmetrical line of the first supplementary combustion ignition chamber (72-2-1-4). The first supplementary combustion gas pipe (72-2-1-9) is inserted into the first supplementary combustion ignition chamber (72-2-1-4) for a certain length and then connected to it. The first supplementary combustion gas pipe (72-2-1-9) is equipped with a first supplementary combustion gas electric valve (72-2-1-10) to control the gas flow rate. The first supplementary combustion electric igniter (72-2-1-8) is connected at one end to the wall of the first supplementary combustion gas pipe (72-2-1-9) via a wire, and at the other end is equipped with at least one ignition probe. One end of the ignition probe is connected to the first supplementary combustion electric igniter (72-2-1-8) via a wire, and the other end is not in contact with the opening of the first supplementary combustion gas pipe (72-2-1-9) after it has been inserted into the first supplementary combustion ignition chamber (72-2-1-4) for a certain length. The distance is suitable for generating an electric spark after being energized. The first supplementary combustion electric igniter (72-2-1-8) is equipped with a low-voltage power supply. The axis of the m-th supplementary combustion branch circuit (72-2-m-2) coincides with the m-th isobaric line of the flue gas (72-1-m), and the m-th supplementary combustion branch circuit (72-2-m-2) is a connected circuit; The axis of the m-th afterburning nozzle (72-2-m-1) is along the flue gas flow direction and perpendicular to the axis of the m-th afterburning branch circuit (72-2-m-2). The m-th afterburning nozzle (72-2-m-1) is connected to the m-th afterburning branch circuit (72-2-m-2). Multiple m-th afterburning nozzles (72-2-m-1) are evenly arranged along the axis of the m-th afterburning branch circuit (72-2-m-2). The axis of the m-th supplementary combustion mixing pipe (72-2-m-3) is connected to the axis of the m-th supplementary combustion branch pipe circuit (72-2-m-2), and the m-th supplementary combustion mixing pipe (72-2-m-3) and the m-th supplementary combustion branch pipe circuit (72-2-m-2) are connected in a continuous manner; The symmetry line of the m-th afterburning ignition chamber (72-2-m-4) is connected in the same direction as the axis of the m-th afterburning mixing pipe (72-2-m-3), and the m-th afterburning ignition chamber (72-2-m-4) and the m-th afterburning mixing pipe (72-2-m-3) are connected in a through manner; The m-th supplementary combustion ignition observation window (72-2-m-5) is set on the m-th supplementary combustion ignition chamber (72-2-m-4), and the way and number of its setting are to facilitate the observation and determination of the ignition situation in the m-th supplementary combustion ignition chamber (72-2-m-4); The axis of the m-th supplementary combustion air pipe (72-2-m-6) intersects the symmetry line of the m-th supplementary combustion ignition chamber (72-2-m-4) and is obliquely connected; the m-th supplementary combustion air pipe (72-2-m-6) and the m-th supplementary combustion ignition chamber (72-2-m-4) are obliquely connected; the m-th supplementary combustion air pipe (72-2-m-6) is equipped with an m-th supplementary combustion air electric valve (72-2-m-7) to control the air flow. The axis of the m-th supplementary combustion gas pipe (72-2-m-9) is connected in the same direction as the symmetry line of the m-th supplementary combustion ignition chamber (72-2-m-4). The m-th supplementary combustion gas pipe (72-2-m-9) is inserted into the m-th supplementary combustion ignition chamber (72-2-m-4) for a certain length and then connected to it. The m-th supplementary combustion gas pipe (72-2-m-9) is equipped with an m-th supplementary combustion gas electric valve (72-2-m-10) to control the gas flow rate. The m-th supplementary combustion electric igniter (72-2-m-8) is connected at one end to the wall of the m-th supplementary combustion gas pipe (72-2-m-9) via a wire, and at the other end is equipped with at least one ignition probe. One end of the ignition probe is connected to the m-th supplementary combustion electric igniter (72-2-m-8) via a wire, and the other end is not in contact with the opening of the m-th supplementary combustion gas pipe (72-2-m-9) after it has been inserted into the m-th supplementary combustion ignition chamber (72-2-m-4) for a certain length. The distance is suitable for generating an electric spark after being energized. The m-th supplementary combustion electric igniter (72-2-m-8) is equipped with a low-voltage power supply.

2. A gas and steam power generation supplementary combustion type thermoelectric decoupling system, characterized in that: It includes a burner system (72) for burnering the exhaust gas generated after the gas turbine generates electricity; The aforementioned afterburner system (72) includes at least one afterburning device (72-2), at least one afterburning ignition video monitor (72-7), at least one afterburning nozzle combustion observation window (72-3), at least one afterburning nozzle combustion observation video monitor (72-6), a flue gas temperature and pressure measuring instrument before afterburning (72-4), and a flue gas temperature and pressure measuring instrument after afterburning (72-5). Along the direction of the flue gas, at least one hole is opened on the flue wall downstream of the combustion device (72-2), and a combustion observation window (72-3) for the combustion of the combustion nozzle is embedded in each hole; the combustion observation video monitor (72-6) for the combustion of the combustion nozzle is arranged at a certain position outside the flue, and its position and number are determined so as to be able to observe the combustion of all combustion nozzles. An instrument for measuring the temperature and pressure of flue gas before combustion (72-4) is arranged upstream of the combustion device (72-2), with its probe inserted into the flue through the flue wall in the radial direction of the flue. A flue gas temperature and pressure measuring instrument (72-5) is arranged downstream of the afterburning device (72-2), with its probe inserted into the flue through the flue wall in the radial direction of the flue; when the flue gas temperature and pressure measuring instrument (72-5) is arranged upstream of the combustion observation window (72-3) of the afterburning nozzle, it is determined so as not to affect the observation of the combustion of the afterburning nozzle. The aforementioned afterburning ignition video monitor (72-7) is arranged at a certain position outside the flue. The position and number of the monitor are determined so that the ignition situation inside the afterburning ignition chamber of all afterburning devices can be observed. The combustion nozzles, combustion branch circuits, and part of the combustion mixing pipes in the combustion device (72-2) are arranged inside the flue. The combustion nozzles are distributed on the combustion branch circuits. The combustion branch circuits are connected to the part of the combustion mixing pipes and are connected to the inner wall of the flue through a support structure. The combustion mixing pipes in the combustion device pass through the flue wall in the radial direction of the flue.

3. A gas and steam power generation supplementary combustion type thermoelectric decoupling system, characterized in that: This includes an integrated flue gas molten salt heat exchange and denitrification device for supplementary combustion, wherein the flue gas is the exhaust gas generated after gas turbine power generation; The aforementioned integrated flue gas molten salt heat exchange and denitrification device includes a burner system (72) or a burner device (72-2), a primary flue gas molten salt heat exchange component (73-1), a flue gas denitrification component (74), and a tertiary flue gas molten salt heat exchange component (73-3). The afterburner system (72) or afterburner device (72-2) is arranged near the flue gas inflow position of the afterburner type flue gas molten salt heat exchanger integrated device (71); along the direction of flue gas inflow: the afterburner system (72) or afterburner device (72-2) is connected to the primary flue gas molten salt heat exchanger assembly (73-1) through the flue gas pipeline (60); the primary flue gas molten salt heat exchanger assembly (73-1) is connected to the SCR flue gas denitrification assembly (74) through the flue gas pipeline (60); the SCR flue gas denitrification assembly (74) is connected to the tertiary flue gas molten salt through the flue gas pipeline (60). The heat exchange assembly (73-3) is connected; the molten salt inlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0); the molten salt outlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt inlet of the primary flue gas molten salt heat exchange assembly (73-1) through the molten salt pipeline (70-0); the molten salt outlet of the primary flue gas molten salt heat exchange assembly (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0).

4. A gas and steam power generation supplementary combustion type thermoelectric decoupling system, characterized in that: It includes a combustion-type flue gas purification molten salt heat exchange integrated device (71), wherein the flue gas is the exhaust gas generated after the gas turbine generates electricity; The aforementioned integrated flue gas purification molten salt heat exchange device (71) includes a combustion system (72) or combustion device (72-2), a primary flue gas molten salt heat exchange component (73-1), a flue gas decarbonization component (75), a secondary flue gas molten salt heat exchange component (73-2), a flue gas denitrification component (74), and a tertiary flue gas molten salt heat exchange component (73-3). The afterburner system (72) or afterburner device (72-2) is arranged near the flue gas inflow position of the afterburner type flue gas molten salt heat exchange integrated device (71); along the direction of flue gas inflow: the afterburner system (72) or afterburner device (72-2) is connected to the primary flue gas molten salt heat exchange assembly (73-1) through the flue gas pipeline (60); the primary flue gas molten salt heat exchange assembly (73-1) is connected to the flue gas decarbonization assembly (75) through the flue gas pipeline (60); the flue gas decarbonization assembly (75) is connected to the secondary flue gas molten salt heat exchange assembly (73-2) through the flue gas pipeline (60); the secondary flue gas molten salt heat exchange assembly (73-2) is connected to the SCR flue gas denitrification assembly (74) through the flue gas pipeline (60); the SCR flue gas denitrification assembly (74) is connected to the SCR flue gas denitrification assembly (74) through the flue gas pipeline (60). Pipeline (60) is connected to the tertiary flue gas molten salt heat exchange assembly (73-3); the molten salt inlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) via molten salt pipeline (70-0); the molten salt outlet of the tertiary flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt inlet of the secondary flue gas molten salt heat exchange assembly (73-2) via molten salt pipeline (70-0); the molten salt outlet of the secondary flue gas molten salt heat exchange assembly (73-2) is connected to the molten salt inlet of the primary flue gas molten salt heat exchange assembly (73-1) via molten salt pipeline (70-0); the molten salt outlet of the primary flue gas molten salt heat exchange assembly (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) via molten salt pipeline (70-0). When the positions of the flue gas denitrification component (74) and the flue gas decarbonization component (75) are interchanged, the secondary flue gas molten salt heat exchange component (73-2) is no longer installed.

5. A gas and steam power generation supplementary combustion type thermoelectric decoupling system, characterized in that: It includes a gas turbine power generation system (10), a power transmission and transformation system (30), a molten salt thermal storage system (70), a steam power generation system (80), and a waste heat exchanger (110). The gas turbine power generation system (10) is connected to the molten salt thermal storage system (70) through the flue gas pipeline (60); the molten salt thermal storage system (70) is connected to the waste heat exchanger (110) through the flue gas pipeline (60); the gas turbine power generation system (10) is connected to the power transmission and transformation system (30) through the cable (50); the molten salt thermal storage system (70) is connected to the steam power generation system (80) through the main steam pipeline (90) and the return water pipeline (100); the steam power generation system (80) is connected to the power transmission and transformation system (30) through the cable (50); The molten salt thermal storage system (70) includes a high-temperature molten salt storage tank (70-1), a low-temperature molten salt storage tank (70-2), a molten salt heating device (70-3), a molten salt industrial steam generating device (70-4), a molten salt high-temperature and high-pressure steam generating device (70-5), and a combustion-type flue gas molten salt heat exchange integrated device (71). The molten salt outlet of the low-temperature molten salt storage tank (70-2) is connected to the molten salt inlet of the combustion-type flue gas molten salt heat exchanger (71) via a molten salt pipeline (70-0); the molten salt outlet of the combustion-type flue gas molten salt heat exchanger (71) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) via a molten salt pipeline (70-0); the three molten salt outlets of the high-temperature molten salt storage tank (70-1) are respectively connected to... The molten salt inlets of the molten salt heating device (70-3), the molten salt industrial steam generating device (70-4), and the molten salt high-temperature and high-pressure steam generating device (70-5) are connected; the molten salt outlets of the molten salt heating device (70-3), the molten salt industrial steam generating device (70-4), and the molten salt high-temperature and high-pressure steam generating device (70-5) are respectively connected to the three molten salt inlets of the low-temperature molten salt storage tank (70-2) through molten salt pipelines (70-0); The aforementioned combustion-type flue gas molten salt heat exchange integrated device (71) includes a combustion system (72), a primary flue gas molten salt heat exchange component (73-1), a secondary flue gas molten salt heat exchange component (73-2), a tertiary flue gas molten salt heat exchange component (73-3), an SCR flue gas denitrification component (74), or an SCR flue gas denitrification component (74) and a flue gas decarbonization component (75). The aforementioned combustion-type flue gas molten salt heat exchange integrated device (71) is specifically a combustion-type flue gas molten salt heat exchange and denitrification integrated device. The combustion-type burner system (72) is arranged near the flue gas inflow position of the combustion-type flue gas molten salt heat exchange integrated device (71). Along the direction of flue gas inflow: the combustion-type burner system (72) is connected to the primary flue gas molten salt heat exchange component (73-1) through the flue gas pipeline (60); the primary flue gas molten salt heat exchange component (73-1) is connected to the SCR flue gas denitrification component (74) through the flue gas pipeline (60); the SCR flue gas denitrification component (74) is connected to the SCR flue gas denitrification component (74) through the flue gas pipeline. (60) Connected to the third-stage flue gas molten salt heat exchange assembly (73-3); the molten salt inlet of the third-stage flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0); the molten salt outlet of the third-stage flue gas molten salt heat exchange assembly (73-3) is connected to the molten salt inlet of the first-stage flue gas molten salt heat exchange assembly (73-1) through the molten salt pipeline (70-0); the molten salt outlet of the first-stage flue gas molten salt heat exchange assembly (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0); Alternatively, the aforementioned combustion-type flue gas molten salt heat exchange integrated device (71) is specifically a combustion-type flue gas purification molten salt heat exchange integrated device, with the combustion-type burner system (72) arranged near the flue gas inflow position of the combustion-type flue gas molten salt heat exchange integrated device (71); along the flue gas inflow direction: the combustion-type burner system (72) is connected to the primary flue gas molten salt heat exchange component (73-1) through the flue gas pipeline (60); the primary flue gas molten salt heat exchange component (73-1) is connected to the flue gas decarbonization component (75) through the flue gas pipeline (60); the flue gas decarbonization component (75) is connected to the secondary flue gas molten salt heat exchange component (73-2) through the flue gas pipeline (60); the secondary flue gas molten salt heat exchange component (73-2) is connected to the SCR flue gas denitrification component (74) through the flue gas pipeline (60); the SCR flue gas denitrification... Component (74) is connected to the third-stage flue gas molten salt heat exchange component (73-3) via flue gas pipeline (60); the molten salt inlet of the third-stage flue gas molten salt heat exchange component (73-3) is connected to the molten salt outlet of the low-temperature molten salt storage tank (70-2) via molten salt pipeline (70-0); the molten salt outlet of the third-stage flue gas molten salt heat exchange component (73-3) is connected to the molten salt inlet of the second-stage flue gas molten salt heat exchange component (73-2) via molten salt pipeline (70-0); the molten salt outlet of the second-stage flue gas molten salt heat exchange component (73-2) is connected to the molten salt inlet of the first-stage flue gas molten salt heat exchange component (73-1) via molten salt pipeline (70-0); the molten salt outlet of the first-stage flue gas molten salt heat exchange component (73-1) is connected to the molten salt inlet of the high-temperature molten salt storage tank (70-1) via molten salt pipeline (70-0).

6. A gas and steam power generation supplementary combustion type thermoelectric decoupling system according to claim 1 or 2, characterized in that: The cross-section of the high-temperature exhaust gas duct of the gas turbine has the first isobaric line (72-1-1) to the m-th isobaric line (72-1-m); the pressure of the flue gas on the same isobaric line is the same; the position of the first isobaric line (72-1-1) to the m-th isobaric line (72-1-m) is obtained by numerical simulation calculation; The inner contour line (72-1-0) of the flue section is a circle, a square, or a multi-segment closed broken line; The gas inside the m-th supplementary combustion gas pipe (72-2-m-9) is a combustible gas, an atomized combustible gas-liquid mixture, an atomized combustible gas-powder mixture, or an atomized combustible gas-liquid-powder mixture; The internal cross-sectional profile of all the afterburning nozzles in the afterburning device (72-2) is a hyperbola; The axis of the first supplementary combustion branch circuit (72-2-1-2) of the supplementary combustion device (72-2) coincides with the first isobaric line of the flue gas (72-1-1), and the first supplementary combustion branch circuit (72-2-1-2) is a continuous circuit; the axis of the first supplementary combustion nozzle (72-2-1-1) is along the flue gas flow direction and perpendicular to the axis of the first supplementary combustion branch circuit (72-2-1-2), and the first supplementary combustion nozzle (72-2-1-1) and the first supplementary combustion branch circuit (72-2-1-2) are connected. The m-th supplementary combustion branch circuit (72-2-m-2) is connected, and / or the axis of the m-th isobaric line (72-1-m) of the flue gas coincides with the m-th isobaric line of the flue gas. The m-th supplementary combustion branch circuit (72-2-m-2) is a continuous circuit. The axis of the m-th supplementary combustion nozzle (72-2-m-1) is along the flue gas flow direction and perpendicular to the axis of the m-th supplementary combustion branch circuit (72-2-m-2). The m-th supplementary combustion nozzle (72-2-m-1) is connected to the m-th supplementary combustion branch circuit (72-2-m-2). Multiple first-stage combustion nozzles (72-2-1-1) are uniformly arranged along the axis of the first-stage combustion branch circuit (72-2-1-2), and / or multiple m-th stage combustion nozzles (72-2-m-1) are uniformly arranged along the axis of the m-th stage combustion branch circuit (72-2-m-2).

7. A gas and steam power generation supplementary combustion type thermoelectric decoupling system according to claim 4 or 5, characterized in that: The substances burned by the gas turbine include combustible gases, combustible liquids, or combustible solids; the combustible gases include natural gas, methane, hydrogen, ammonia, or organic gases; the combustible liquids include gasoline, diesel, alcohol, or synthetic organic oils; and the combustible solids include coal or organic solids.

8. A gas and steam power generation supplementary combustion type thermoelectric decoupling system according to claim 5, characterized in that: The power transmission and transformation system (30) is connected to the external power grid (40) via a cable (50); The electricity generated by the gas turbine power generation system (10) is transmitted through the power transmission and transformation system (30) via the cable (50) to the external power grid (40). The flue gas discharged from the gas turbine power generation system (10) passes through the flue gas pipeline (60) and then passes through the combustion-type flue gas molten salt heat exchange integrated device (71) and the waste heat exchanger (110) in sequence, and then becomes exhaust flue gas (20) before being discharged into the air. The electricity generated by the steam power generation system (80) is transmitted through the power transmission and transformation system (30) via the cable (50) to the external power grid (40). External heating demand (130) is connected to molten salt heating device (70-3) via heat pipe (120); External industrial steam demand (140) is connected to the molten salt industrial steam generating unit (70-4) via a heat pipeline (120).

9. A method for operating a gas and steam power generation supplementary combustion type thermoelectric decoupling system, characterized in that: The gas and steam power generation supplementary combustion type thermoelectric decoupling system includes a supplementary combustion system (72). The normal operation process of the afterburner system (72) is as follows: The flue gas first passes through the pre-combustion flue gas temperature and pressure measuring instrument (72-4) upstream of the combustion device (72-2) to measure the pre-combustion flue gas temperature and pressure values. The pre-combustion flue gas temperature and pressure values ​​are then transmitted to the combustion intelligent control system via a transmitter for backup. When the flue gas passes through the combustion device (72-2), it is heated by the combustion device (72-2) and continues to flow downstream; the combustion observation video monitor (72-6) of the combustion nozzle records the combustion status of all nozzles in the combustion device (72-2) through the combustion observation window (72-3), and the video signal is transmitted to the combustion intelligent control system through the video signal line. The result is analyzed and processed by AI technology and stored for later use. After the flue gas is re-burned by the re-burning device (72-2), the flue gas temperature and pressure are measured by the flue gas temperature and pressure measuring instrument (72-5). The flue gas temperature and pressure values ​​are then transmitted to the re-burning intelligent control system via a transmitter for backup. The following data are transmitted to the intelligent combustion control system: pre-combustion flue gas temperature and pressure values; post-combustion flue gas temperature and pressure values; combustion status of all nozzles in the combustion device (72-2) recorded by the combustion observation video monitor (72-6) stored in the intelligent combustion control system, after AI technology analysis and processing; and ignition status of all combustion chambers in the combustion device (72-2) recorded by the combustion ignition video monitor (72-7) stored in the intelligent combustion control system, after AI technology analysis and processing. The first supplementary combustion air electric valve (72-2-1-7), the first supplementary combustion electric igniter (72-2-1-8), the first supplementary combustion gas electric valve (72-2-1-10), the m-th supplementary combustion air electric valve (72-2-m-7), the m-th supplementary combustion electric igniter (72-2-m-8), and the m-th supplementary combustion gas electric valve (72-2-m-10) of the supplementary combustion device (72-2) are interconnected, and the control logic is executed by the algorithm in the supplementary combustion intelligent control system. When the flue gas requires re-combustion, the re-combustion device (72-2) proceeds from ignition to normal operation as follows: When the flue gas needs to be supplemented, the algorithm in the supplementation combustion intelligent control system issues a command to open the first supplementation combustion air electric valve (72-2-1-7) and / or the mth supplementation combustion air electric valve (72-2-m-7) of the supplementation combustion device (72-2), after 1~2 seconds; The algorithm in the intelligent combustion control system issues instructions for the simultaneous opening of the first combustion electric igniter (72-2-1-8) and the first combustion gas electric valve (72-2-1-10) of the combustion device (72-2), and / or the simultaneous opening of the mth combustion electric igniter (72-2-m-8) and the mth combustion gas electric valve (72-2-m-10); At this time, the mixture in the first ignition observation window (72-2-1-5) and / or the mth ignition observation window (72-2-m-5) of the ignition device (72-2) can be observed to have been ignited. This ignition video information is recorded by the ignition video monitor (72-7) and then transmitted to the ignition intelligent control system for storage. The video information of the ignition status of all ignition chambers in the ignition device (72-2) is analyzed and processed by AI technology to obtain the value representing the ignition. After receiving this value, the algorithm in the ignition intelligent control system issues a command to shut down the first ignition electric igniter (72-2-1-8) and / or the mth ignition electric igniter (72-2-m-8). At the same time, the algorithm in the supplementary combustion intelligent control system issues a command to increase the opening of the first supplementary combustion air electric valve (72-2-1-7) and the first supplementary combustion gas electric valve (72-2-1-10), and / or the mth supplementary combustion air electric valve (72-2-m-7) and the mth supplementary combustion gas electric valve (72-2-m-10), that is, to increase the flow rate; At this time, the flow rate of the mixed gas in the first combustion ignition chamber (72-2-1-4) and / or the mth combustion ignition chamber (72-2-m-4) of the combustion device (72-2) gradually increases. The flow ratio of air to gas in the mixed gas is controlled by an algorithm, so that the flame flows forward with the flow of the mixed gas. The flame enters through the first combustion mixing pipe (72-2-1-3) and the first combustion branch pipe circuit (72-2-1-2) and exits from all the first combustion nozzles (72-2-1-1) in sequence, and / or enters through the mth combustion mixing pipe (72-2-m-3) and the mth combustion branch pipe circuit (72-2-m-2) and exits from all the mth combustion nozzles (72-2-m-1) in sequence. At this time, the combustion status of the gas mixture in all the combustion nozzles of the combustion device (72-2) can be observed in the combustion observation window (72-3). This combustion status video information is recorded by the combustion observation video monitor (72-6) and then transmitted to the combustion intelligent control system for storage. The result of the combustion status video information of all the gas mixture in the combustion device (72-2) after being analyzed and processed by AI technology is the value representing the ignition of the combustion nozzle. After receiving this value, the algorithm in the combustion intelligent control system issues an instruction to maintain the current opening degree of the first combustion air electric valve (72-2-1-7) and the first combustion gas electric valve (72-2-1-10), and / or the mth combustion air electric valve (72-2-m-7) and the mth combustion gas electric valve (72-2-m-10); then the combustion system is in normal operation. The pre-combustion flue gas temperature and pressure values ​​and post-combustion flue gas temperature and pressure values, which are stored in the intelligent combustion control system, are analyzed and processed by AI technology as a reference for judging whether the combustion system is operating normally.

10. A method for operating a gas and steam power generation supplementary combustion type thermoelectric decoupling system as described in claim 5, characterized in that: The electricity generated by the gas turbine is transmitted through the power transmission and transformation system (30) via the cable (50) to the external power grid (40). Waste heat storage process: After the gas turbine generates electricity, the flue gas enters the combustion-type flue gas molten salt heat exchange integrated device (71), where the flue gas exchanges heat with low temperature molten salt. The waste heat in the flue gas heats the low temperature molten salt into high temperature molten salt. Under the action of the molten salt pump, the high temperature molten salt enters the high temperature molten salt storage tank (70-1) through the molten salt pipeline (70-0). The flue gas that has exchanged heat with the molten salt passes through the waste heat exchanger (110) for further heat exchange and becomes exhaust flue gas (20) which is discharged into the air. The process of generating electricity through heat release is as follows: under the action of the molten salt pump, the high-temperature molten salt enters the molten salt high-temperature and high-pressure steam generating device (70-5) through the molten salt pipeline (70-0). In the device, the high-temperature molten salt exchanges heat with water, turning the water into high-temperature and high-pressure steam. The high-temperature and high-pressure steam enters the steam power generation system (80) through the main steam pipeline (90) to generate electricity. The generated electricity is transmitted through the cable (50) and the power transmission and transformation system (30) to the external power grid (40). The high-temperature and high-pressure steam that has generated electricity becomes low-pressure steam and / or condensate and returns to the molten salt heat storage system (70) through the return water pipeline (100). After heat exchange, the high-temperature molten salt becomes low-temperature molten salt, which enters the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0) under the action of the molten salt pump. The heat release and heating process is achieved as follows: Under the action of the molten salt pump, the high-temperature molten salt enters the molten salt heating device (70-3) and the molten salt industrial steam generating device (70-4) through the molten salt pipeline (70-0). In the device, the high-temperature molten salt exchanges heat with water. The hot water or steam generated after the heat exchange is respectively delivered through the heat pipeline (120) to meet the external heating demand (130) and the external industrial steam demand (140). After the heat exchange, the high-temperature molten salt becomes low-temperature molten salt, which enters the low-temperature molten salt storage tank (70-2) through the molten salt pipeline (70-0) under the action of the molten salt pump. Achieving complete decoupling of thermoelectricity: Decoupling of heat storage and gas turbine power generation, the heat energy of the molten salt thermal storage system (70) comes from the residual heat of the flue gas after the gas turbine generates electricity and the heat energy generated by the supplementary combustion of the supplementary combustion system (72), thus eliminating the coupling relationship between heat storage and gas turbine power generation; Decoupling of heat supply and gas turbine power generation, the heat energy of the molten salt thermal storage system (70) comes from the residual heat of the flue gas after the gas turbine generates electricity and the heat energy generated by the supplementary combustion of the supplementary combustion system (72), the heat release includes heat release power generation and heat release power supply, the heat release power generation and heat release power supply operate independently, thus eliminating the coupling relationship between heat supply and gas turbine power generation.

Images