Coal-fired boiler ammonia-doped combustion system based on carbon trading market

Abstract

The invention discloses a coal-fired boiler ammonia-doped combustion system based on a carbon trading market. The coal-fired boiler ammonia-doped combustion system comprises a carbon trading system and a coal-fired boiler ammonia-doped combustion system, the carbon transaction system comprises a carbon transaction public block chain module, and the carbon transaction public block chain module comprises a carbon quota module and a carbon emission metering module. The carbon emission metering module comprises a greenhouse gas collection module and a greenhouse gas analysis module; a carbon emission reduction unit and a carbon emission unit to which the ammonia-doped combustion system of the coal-fired boiler belongs carry out carbon transaction behaviors through a carbon transaction system based on the block chain technology, and the advantages of real-time performance, transparency, system autonomy and the like of the block chain technology are fully utilized. And the carbon trading market liberalization of the coal-fired boiler ammonia-doped combustion carbon reduction behavior of a carbon emission reduction unit to which the coal-fired boiler ammonia-doped combustion system belongs is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of carbon trading market and clean combustion and carbon reduction of coal-fired boiler, and more particularly, to a coal-fired boiler ammonia blending combustion system based on carbon trading market. BACKGROUND

[0002] With the continuous enhancement of environmental awareness and the continuous improvement of corresponding standards, the traditional power industry is facing new challenges, especially the traditional coal-fired boiler power plant. Ammonia as a new type of energy has attracted attention due to its low storage and transportation cost, high bulk density, and good safety. The existing coal-fired boiler is modified to blend ammonia during combustion, which can reduce carbon emissions without affecting the efficiency of the boiler, providing a new direction for the development of existing coal-fired boiler power plants.

[0003] The carbon trading market is a new market that is generated to promote global greenhouse gas emission reduction. The carbon trading market regards carbon dioxide emission rights as a commodity, and more effectively allocates social resources under the supervision of market mechanisms to reduce global greenhouse gas emissions.

[0004] The coal-fired boiler power plant can reduce carbon emissions through the ammonia blending combustion system after modification, but the carbon dioxide emission reduction cannot be accurately measured and calculated, and real-time transparent transactions cannot be realized with the carbon trading market. Therefore, how to link the carbon emission reduction units of the coal-fired boiler ammonia blending combustion system with the carbon trading market to strengthen resource exchange is a problem that needs to be solved at present. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present application provide a coal-fired boiler ammonia blending combustion system based on a carbon trading market to solve the problems raised in the above background art. To achieve the above object, the present application provides the following technical scheme: The application discloses a coal-fired boiler ammonia blending combustion system based on a carbon trading market, which comprises a carbon trading system and a coal-fired boiler ammonia blending combustion system; the carbon trading system comprises a carbon trading public block chain module, the carbon trading public block chain module comprises a carbon quota module and a carbon emission metering module; the carbon emission metering module comprises a greenhouse gas collecting module and a greenhouse gas analyzing module; the greenhouse gas collecting module is used for collecting greenhouse gases emitted by carbon emission enterprises in various fields; the greenhouse gas analyzing module is used for analyzing and calculating the greenhouse gases collected by the greenhouse gas collecting module; the carbon quota module is used for obtaining carbon emission data declared by the carbon emission enterprises and distributing carbon emission quota values of the carbon emission enterprises; the carbon emission metering module obtains the carbon emission data of the carbon emission enterprises according to the greenhouse gas collecting module and the greenhouse gas analyzing module; and the carbon trading public block chain module is used for carbon trading between carbon emission enterprises in various fields and carbon reduction units to which the coal-fired boiler ammonia blending combustion system belongs.

[0006] Further, the carbon quota module is used to obtain carbon emission data declared by carbon emission enterprises in various fields, distribute carbon emission quota values of the carbon emission enterprises according to standard emission reduction reference values, and transmit the carbon emission quota values of the carbon emission enterprises to the carbon trading public block chain module after consensus of the carbon emission enterprises and other enterprises.

[0007] Further, the carbon emission metering module obtains carbon emission data of the carbon emission enterprises according to the greenhouse gas collecting module and the greenhouse gas analyzing module, and transmits the carbon emission data of the carbon emission enterprises to the carbon trading public block chain module by using a shared protocol.

[0008] Further, the carbon trading public block chain module can realize carbon trading requests between the carbon emission enterprises.

[0009] Further, the coal-fired boiler ammonia blending combustion system comprises a pulverized coal boiler, an exhaust gas treatment device and a chimney; the pulverized coal boiler, the exhaust gas treatment device and the chimney are sequentially communicated, and an induced draft fan is further arranged between the exhaust gas treatment device and the chimney.

[0010] Further, the pulverized coal boiler is sequentially provided with a pulverized coal burner, an ammonia coal burner, a pure ammonia burner and an ammonia gas multi-nozzle lance from low to high upwards at an internal hearth of the pulverized coal boiler; and an economizer and an online flue gas monitoring system are sequentially arranged from high to low downwards at an internal flue of the pulverized coal boiler.

[0011] Further, a pulverized coal boiler greenhouse gas collecting module is further arranged between the induced draft fan and the chimney, the pulverized coal boiler greenhouse gas collecting module is located at an inlet of the chimney, and a pulverized coal boiler greenhouse gas analyzing module is further connected to an outlet of the pulverized coal boiler greenhouse gas collecting module.

[0012] Further, the coal-fired boiler greenhouse gas collection module and the coal-fired boiler greenhouse gas analysis module are subordinate classifications of the greenhouse gas collection module and the greenhouse gas analysis module, and specifically refer to the greenhouse gas collection module and the greenhouse gas analysis module used by the carbon reduction and emission reduction unit of the coal-fired boiler ammonia blending combustion system; the data of the coal-fired boiler greenhouse gas collection module and the coal-fired boiler greenhouse gas analysis module can also be transmitted to the carbon trading public block chain module through the carbon emission metering module.

[0013] Further, the ammonia used by the coal-fired boiler ammonia blending combustion system is green ammonia.

[0014] The coal-fired boiler ammonia blending combustion system based on the carbon trading market has the following technical effects and advantages: 1. The carbon reduction and emission reduction unit and the carbon emission unit of the coal-fired boiler ammonia blending combustion system carry out carbon trading behavior through the carbon trading system based on the block chain technology, fully utilize the real-time, transparency and system autonomy of the block chain technology, and realize the carbon trading market liberalization of the carbon reduction behavior of the coal-fired boiler ammonia blending combustion system of the carbon reduction and emission reduction unit of the coal-fired boiler ammonia blending combustion system.

[0015] 2. The coal-fired boiler ammonia blending combustion system based on the carbon trading market, the carbon reduction and emission reduction unit of the coal-fired boiler ammonia blending combustion system is modified through the coal-fired boiler ammonia blending combustion system, the accurate metering of the carbon emission amount is completed through the greenhouse gas collection module and the greenhouse gas analysis module, and the carbon reduction target of the carbon reduction and emission reduction unit is completed, so that the carbon emission right can be provided for other carbon reduction and emission reduction units, and the carbon trading income of the carbon reduction and emission reduction unit of the coal-fired boiler ammonia blending combustion system can be increased without affecting the boiler efficiency and the tail gas emission concentration of the coal-fired boiler. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a carbon trading system function module diagram in the application.

[0017] Figure 2 It is a structure schematic view of the coal-fired boiler ammonia blending combustion system in the application.

[0018] In the above figure: 101, greenhouse gas collection module; 102, greenhouse gas analysis module; 103, carbon quota module; 104, carbon emission metering module; 105, carbon trading public block chain module; 1, pulverized coal boiler; 2, coal burner; 3, ammonia coal burner; 4, pure ammonia burner; 5, ammonia gas multi-nozzle spray gun; 6, coal economizer; 7, flue gas online monitoring system; 8, tail gas treatment equipment; 9, induced draft fan; 10, chimney; 11, coal-fired boiler greenhouse gas collection module; 12, coal-fired boiler greenhouse gas analysis module. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0020] Embodiment The coal-fired boiler ammonia blending combustion system based on the carbon trading market comprises a carbon trading system and a coal-fired boiler ammonia blending combustion system; the carbon trading system comprises a carbon trading public block chain module 105, the carbon trading public block chain module 105 comprising a carbon quota module 103 and a carbon emission metering module 104; the carbon emission metering module 104 comprising a greenhouse gas collection module 101 and a greenhouse gas analysis module 102; the greenhouse gas collection module 101 is used for collecting greenhouse gases emitted by carbon emission enterprises in various fields; the greenhouse gas analysis module 102 is used for analyzing and calculating the greenhouse gases emitted by the carbon emission enterprises in various fields collected by the greenhouse gas collection module 101; the carbon quota module 103 is used for obtaining carbon emission data declared by the carbon emission enterprises and distributing carbon emission quota values of the carbon emission enterprises; the carbon emission metering module 104 obtains the carbon emission data of the carbon emission enterprises according to the greenhouse gas collection module 101 and the greenhouse gas analysis module 102; and the carbon trading public block chain module 105 is used for carbon trading between the carbon emission enterprises in various fields and carbon reduction units to which the coal-fired boiler ammonia blending combustion system belongs.

[0021] The carbon quota module 103 is used to obtain carbon emission data declared by carbon emission enterprises in various fields, distribute carbon emission quota values of the carbon emission enterprises according to standard emission reduction reference values, and transmit the carbon emission quota values of the carbon emission enterprises to the carbon trading public block chain module 105 after obtaining consensus of the carbon emission enterprises and other enterprises.

[0022] The carbon emission metering module 104 obtains carbon emission data of the carbon emission enterprises according to the greenhouse gas collection module 101 and the greenhouse gas analysis module 102, and transmits the carbon emission data of the carbon emission enterprises to the carbon trading public block chain module 105 by using a shared protocol.

[0023] The carbon trading public block chain module 105 can realize carbon trading requests between the carbon emission enterprises.

[0024] The coal-fired boiler ammonia blending combustion system comprises a pulverized coal boiler 1, an exhaust gas treatment device 8 and a chimney 10; the pulverized coal boiler 1, the exhaust gas treatment device 8 and the chimney 10 are sequentially communicated, and an induced draft fan 9 is further arranged between the exhaust gas treatment device 8 and the chimney 10.

[0025] The internal furnace of the pulverized coal boiler 1 is sequentially provided with a pulverized coal burner 2, an ammonia coal burner 3, a pure ammonia burner 4 and an ammonia gas multi-nozzle lance 5 from low to high upwards; and the internal flue of the pulverized coal boiler 1 is sequentially provided with an economizer 6 and a flue gas online monitoring system 7 from high to low downwards.

[0026] A coal-fired boiler greenhouse gas collection module 11 is further arranged between the induced draft fan 9 and the chimney 10, and the coal-fired boiler greenhouse gas collection module 11 is located at the inlet of the chimney 10; and a coal-fired boiler greenhouse gas analysis module 12 is further connected to the outlet of the coal-fired boiler greenhouse gas collection module 11.

[0027] The coal-fired boiler greenhouse gas collection module 11 and the coal-fired boiler greenhouse gas analysis module 12 are sub-classifications of the greenhouse gas collection module 101 and the greenhouse gas analysis module 102 respectively, and particularly refer to the greenhouse gas collection module and the greenhouse gas analysis module used by the carbon reduction and emission reduction unit belonging to the coal-fired boiler ammonia blending combustion system; the data of the coal-fired boiler greenhouse gas collection module 11 and the coal-fired boiler greenhouse gas analysis module 12 can also be transmitted to the carbon trading public block chain module 105 through the carbon emission metering module 104.

[0028] The core of the present application is to combine the carbon trading market based on the blockchain technology with the coal-fired boiler ammonia blending combustion system, so that the carbon reduction and emission reduction unit belonging to the coal-fired boiler ammonia blending combustion system can provide additional carbon emission reduction rights for other carbon emission units in the carbon trading market on the premise of reducing its own carbon emissions, thereby realizing income generation.

[0029] The functionality of the coal-fired boiler greenhouse gas collection module 11 and the coal-fired boiler greenhouse gas analysis module 12 in the present application is the same as that of the greenhouse gas collection module 101 and the greenhouse gas analysis module 102, and particularly refers to the greenhouse gas collection module and the greenhouse gas analysis module used by the carbon reduction and emission reduction unit belonging to the coal-fired boiler ammonia blending combustion system; wherein the function of the above-mentioned greenhouse gas collection module is to filter, cool, dry and the like the collected greenhouse gas. The greenhouse gas analysis module analyzes the greenhouse gas collected by the greenhouse gas collection module by at least one of the non-dispersive infrared analysis method NDIR, the tunable diode laser absorption spectroscopy method TDLAS, the infrared spectroscopy method, the gas sensitive electrode method, the gas chromatography method, the gas filter monitoring method and the wavelength scanning-cavity ring-down spectroscopy method WS-CRDS.

[0030] The carbon quota module 103 obtains the carbon emission data declared by the carbon emission enterprise, distributes the carbon emission quota value of the carbon emission enterprise according to the standard emission reduction reference value, and transmits the carbon emission quota value of the carbon emission enterprise to the carbon trading public block chain module 105 after consensus of the carbon emission enterprise and other enterprises.

[0031] The carbon emission measurement module 104 calculates the carbon emission data of the carbon emission enterprise according to the greenhouse gas collection module 101 and the greenhouse gas analysis module 102, and transmits the carbon emission data of the carbon emission enterprise to the carbon trading public block chain module 105 by using a shared protocol.

[0032] When the carbon emission data of the carbon emission enterprise is higher than the carbon emission quota value of the carbon emission enterprise, the carbon emission enterprise can become a target transaction unit and send a demand broadcast (i.e., request to buy carbon emission rights or carbon emission amount) in the carbon trading public block chain module 105. After the demand broadcast obtains the consensus of each institution in the carbon trading public block chain module, the target transaction unit sends a carbon trading request in the carbon trading public block chain module 105.

[0033] The carbon emission reduction unit to which the coal-fired boiler ammonia blending combustion system belongs blends ammonia gas at different proportions under different loads, and calculates the carbon emission reduction data according to the carbon emission measurement module 104 to obtain the carbon emission reduction reference data of the coal-fired boiler ammonia blending combustion and the preset rules corresponding to the reference data.

[0034] Specifically, for a coal-fired boiler with a certain load, under the condition of blending ammonia gas at a proportion of 0-50% (calculated according to the calorific value), The carbon emission reduction amount of the coal-fired boiler after ammonia blending combustion is analyzed and calculated by the coal-fired boiler greenhouse gas collection module 11 and the coal-fired boiler greenhouse gas analysis module 12. After multiple repeated tests, the average value of the obtained carbon emission reduction data is calculated and used as the carbon emission reduction reference data of the coal-fired boiler under the condition of ammonia blending combustion at this load. Then change the load and repeat the above process. Finally, the carbon emission reduction unit to which the coal-fired boiler ammonia blending combustion system belongs transmits the carbon emission reduction reference data of the coal-fired boiler ammonia blending combustion and the preset rules corresponding to the reference data to the carbon trading public block chain module 105, and after obtaining the consensus of each institution in the carbon trading public block chain module, generates a smart contract according to the above preset rules and stores it in the consensus node of the carbon trading public block chain module 105.

[0035] After the carbon emission reduction unit to which the coal-fired boiler ammonia blending combustion system belongs receives the carbon trading request of the target transaction unit, the carbon emission reduction data required by the target transaction unit is extracted, and the blending proportion of the coal-fired boiler ammonia combustion is determined according to the carbon emission reduction data required by the target transaction unit.

[0036] Specifically, the target transaction unit is taken as a purchase node to obtain the ammonia combustion carbon emission reduction reference data input by the carbon emission reduction unit to which the coal-fired boiler ammonia combustion system belongs in the carbon transaction public blockchain module 105 and the preset rules corresponding to the reference data; the target transaction unit is matched with the carbon emission reduction unit to which the coal-fired boiler ammonia combustion system belongs, and after successful matching, the target transaction unit sends a carbon transaction request to the carbon emission reduction unit to which the coal-fired boiler ammonia combustion system belongs; the carbon emission reduction unit to which the coal-fired boiler ammonia combustion system belongs accepts the carbon transaction request of the target transaction unit, becomes a selling node, and extracts the required carbon emission reduction data of the target transaction unit; the carbon emission reduction unit to which the coal-fired boiler ammonia combustion system belongs carries out ammonia combustion according to the required carbon emission reduction data of the target transaction unit and the preset rules corresponding to the ammonia combustion carbon emission reduction reference data; the carbon emission reduction unit to which the coal-fired boiler ammonia combustion system belongs inputs the carbon emission reduction data of this time of coal-fired boiler ammonia combustion into the carbon transaction public blockchain module 105, and after confirmation by the target transaction unit, the carbon transaction behavior is completed.

[0037] More specifically, in the coal-fired boiler ammonia combustion system, the pure ammonia burner 4 is located above the ammonia-coal burner 3 in the height direction of the furnace, the ammonia-coal burner 3 is located above the pulverized coal burner 2 in the height direction of the furnace, the flue gas online monitoring system 7 is located downstream of the tail flue economizer 6, the coal-fired boiler greenhouse gas collection module 11 is located at the inlet of the chimney 10, and the inlet of the coal-fired boiler greenhouse gas analysis module 12 is connected to the outlet of the coal-fired boiler greenhouse gas collection module 11.

[0038] The above-mentioned coal-fired boiler greenhouse gas collection module 11 and coal-fired boiler greenhouse gas analysis module 12 are connected with the DCS control system; the flue gas online monitoring system 7 is also connected with the DCS control system.

[0039] In actual use, the coal-fired boiler ammonia combustion system preferentially inputs the upper pure ammonia burner 4 for ammonia combustion, and according to the required carbon emission reduction data of the target transaction unit, if further ammonia combustion is still required, the ammonia pipeline of the ammonia-coal hybrid burner 3 is opened to increase the amount of ammonia.

[0040] The coal-fired boiler ammonia combustion system adjusts the ammonia injection amount of the ammonia multi-nozzle lance 5 according to the real-time tail flue gas data of the flue gas online monitoring system 7 to ensure that the nitrogen oxide concentration of the flue gas entering the tail gas treatment equipment meets the inlet requirements of the flue gas treatment equipment.

[0041] The ammonia used in the above-mentioned coal-fired boiler ammonia combustion system is green ammonia, which is ammonia gas produced in a production process without generating greenhouse gases.

[0042] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, and all of them should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0043] Finally, the above merely provides the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coal-fired boiler ammonia-doping combustion system based on a carbon trading market, characterized by, The system comprises a carbon trading system and an ammonia-doped combustion system of a coal-fired boiler; the carbon trading system comprises a carbon trading public block chain module (105), the carbon trading public block chain module (105) comprises a carbon quota module (103) and a carbon emission metering module (104); the carbon emission metering module (104) comprises a greenhouse gas collecting module (101) and a greenhouse gas analyzing module (102); the greenhouse gas collecting module (101) is used for collecting greenhouse gases emitted by carbon emission enterprises in various fields; the greenhouse gas analyzing module (102) is used for analyzing and calculating the greenhouse gases collected by the greenhouse gas collecting module (101); the carbon quota module (103) is used for obtaining carbon emission data declared by the carbon emission enterprises and distributing carbon emission quota values of the carbon emission enterprises; the carbon emission metering module (104) obtains the carbon emission data of the carbon emission enterprises according to the greenhouse gas collecting module (101) and the greenhouse gas analyzing module (102); and the carbon trading public block chain module (105) is used for carbon trading between the carbon emission enterprises in various fields and carbon reduction units to which the ammonia-doped combustion system of the coal-fired boiler belongs.

2. The coal-fired boiler ammonia blending combustion system based on the carbon trading market according to claim 1, characterized in that, The carbon quota module (103) is used to obtain carbon emission data declared by carbon emission enterprises in various fields, distribute carbon emission quota values of the carbon emission enterprises according to standard emission reduction reference values, and transmit the carbon emission quota values of the carbon emission enterprises to the carbon trading public block chain module (105) after obtaining consensus of the carbon emission enterprises and other enterprises.

3. The coal-fired boiler ammonia blending combustion system based on the carbon trading market according to claim 2, characterized in that, The carbon emission metering module (104) obtains carbon emission data of the carbon emission enterprises according to the greenhouse gas collecting module (101) and the greenhouse gas analyzing module (102), and transmits the carbon emission data of the carbon emission enterprises to the carbon trading public block chain module (105) by using a shared protocol.

4. The coal-fired boiler ammonia blending combustion system based on carbon trading market according to claim 3, characterized in that, The carbon trading public block chain module (105) can realize carbon trading requests between the carbon emission enterprises.

5. The ammonia-doping combustion system for coal-fired boilers based on carbon trading market according to claim 4, characterized in that, The ammonia-doped combustion system of the coal-fired boiler comprises a pulverized coal boiler (1), an exhaust gas treatment device (8) and a chimney (10); the pulverized coal boiler (1), the exhaust gas treatment device (8) and the chimney (10) are sequentially communicated, and an induced draft fan (9) is further arranged between the exhaust gas treatment device (8) and the chimney (10).

6. The ammonia-doping combustion system for coal-fired boilers based on carbon trading market according to claim 5, characterized in that, A pulverized coal burner (2), an ammonia-coal burner (3), a pure ammonia burner (4) and an ammonia gas multi-nozzle lance (5) are sequentially arranged from low to high on an internal hearth of the pulverized coal boiler (1); and an economizer (6) and an online flue gas monitoring system (7) are sequentially arranged from high to low on an internal flue of the pulverized coal boiler (1).

7. The ammonia-doping combustion system for coal-fired boilers based on carbon trading market according to claim 6, characterized in that, A coal-fired boiler greenhouse gas collecting module (11) is further arranged between the induced draft fan (9) and the chimney (10), and the coal-fired boiler greenhouse gas collecting module (11) is located at an inlet of the chimney (10); and a coal-fired boiler greenhouse gas analyzing module (12) is further connected to an outlet of the coal-fired boiler greenhouse gas collecting module (11).

8. The ammonia-doping combustion system for coal-fired boilers based on carbon trading market according to claim 7, characterized in that, The coal-fired boiler greenhouse gas collection module (11) and the coal-fired boiler greenhouse gas analysis module (12) are subordinate classifications of the greenhouse gas collection module (101) and the greenhouse gas analysis module (102), and specifically refer to the greenhouse gas collection module and the greenhouse gas analysis module used by the carbon reduction and emission reduction unit to which the coal-fired boiler ammonia-doped combustion system belongs; the data of the coal-fired boiler greenhouse gas collection module (11) and the coal-fired boiler greenhouse gas analysis module (12) can also transmit the collected data to the carbon trading public block chain module (105) through the carbon emission metering module (104).

9. The ammonia-doping combustion system for coal-fired boilers based on carbon trading market according to claim 7, characterized in that, The ammonia used by the coal-fired boiler ammonia-doped combustion system is green ammonia.

Images