611results about "Combined combustion mitigation" patented technology

A thermal energy storage (TES) system converts variable renewable electricity (VRE) to continuous heat at over 900° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. Configurations of simple cycle systems and combined cycle power plants using thermal energy storage units can provide even greater efficiency and responsiveness.

The invention belongs to the technical field of heat supply systems, and discloses a regional heat supply system optimization control method for multi-heat-source networking operation. The method comprises the steps that S1, physical entity data, hydraulic working condition data and temperature data in a regional heat supply pipe network are collected in real time, an adjacent matrix is constructed according to the actual connection relation of the physical entity data, and a digital network architecture is formed; s2, dividing the digital network architecture into a plurality of sub-architectures based on an improved GN algorithm, and establishing a state space model for each sub-architecture; and S3, constructing a rapid simulation model based on the state space model, and continuously fusing each physical entity data and a preset deviation range through a physical information neural network. According to the method, the thermal state change caused by hydraulic adjustment and the reaction of the thermal change on the hydraulic resistance characteristic can be captured in real time, meanwhile, all physical entity data and hydraulic working conditions are processed in a unified mode, and deviation caused by decoupling simplification in a traditional method is reduced.

The invention provides a combined heat and power system and a control method thereof, and relates to the technical field of combined heat and power. The system comprises a fuel gas heat and power cogeneration subsystem, a heat supply subsystem and a fused salt heat storage subsystem, the fuel gas heat and power cogeneration subsystem is used for fuel gas power supply, the fused salt heat storage subsystem can convert solar energy and / or flue gas generated by power supply into heat energy of high-temperature fused salt to be stored, and the heat supply subsystem conducts primary heating on heat supply return water through geothermal energy; and flue gas and / or high-temperature fused salt generated by power supply are / is used for conducting secondary heating on heat supply return water. Geothermal energy, solar energy and fused salt heat storage are coupled, and renewable energy sources are fully utilized for heat and power cogeneration, so that the power supply requirement and the heat supply requirement of a user are met. In the ground source heat pump unit, primary heating is conducted through geothermal energy, heat supply return water is heated into warm water, then the warm water is secondarily heated into hot water through smoke in the gas heat and power cogeneration system, the compression ratio of a compressor in a ground source heat pump can be reduced, and power consumption of the compressor is reduced.

The embodiment of the invention provides a multi-steam-source cooperative frequency modulation combined heat and power generation system and a control method. The system comprises a boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder, a power generator, a multi-stage regenerative heater, a heating system and a heating steam supply pipeline. A main steam outlet of the boiler is connected to the high-pressure cylinder through a main steam pipeline, a steam exhaust port of the high-pressure cylinder is connected to the intermediate-pressure cylinder through a pipeline, a steam exhaust port of the intermediate-pressure cylinder is connected to the low-pressure cylinder through a pipeline, and a steam exhaust port of the low-pressure cylinder is connected to the generator through a pipeline. A condensate water outlet of the medium-pressure cylinder is communicated to a condensate water inlet of the boiler through a first condensate water pipeline; the heating system is communicated with a steam exhaust port of the medium-pressure cylinder through a heating steam supply pipeline; the multi-stage regenerative heater is arranged on the first condensate water pipeline and connected with the high-pressure cylinder and / or the intermediate-pressure cylinder through steam extraction pipelines, and steam extraction adjusting valves are correspondingly arranged on the steam extraction pipeline between the high-pressure cylinder and the multi-stage regenerative heater and / or the steam extraction pipeline between the intermediate-pressure cylinder and the multi-stage regenerative heater.

The invention discloses a fuel gas and steam combined cycle power generation system coupling fused salt heat storage and biomass energy storage, which comprises a fuel gas and steam combined cycle power generation subsystem, a fused salt heat storage and release subsystem and a biomass energy storage system, an outlet of the gas-steam combined cycle power generation subsystem is connected with the fused salt heat storage and release subsystem and the biomass energy storage system, and a smoke outlet of the biomass energy storage system is connected with the gas-steam combined cycle power generation subsystem. And the utilization efficiency of energy and the economical efficiency of the system are improved.

A system for producing CO and CO2 to achieve an efficient oil recovery operation that minimizes undesirable gaseous emissions is provided. The system includes a portable CO-producing device, a portable CO2-producing device located proximate to the reservoir, and a gas collecting device configured to receive CO and CO2 and selectively distribute a desired ratio of CO and CO2 dynamically based on current reservoir conditions. Producing CO2 proximate to the reservoir comprises reforming carbon-based fuel within oxygen. Electrical energy generated is used to selectively distribute the desired ratio of CO / CO2 to the reservoir with de minimis greenhouse gases produced transmitted into the atmosphere. The system is an energy-efficient arrangement that recycles and reuses by-products and unused products from the process. Greenhouse gas emissions are significantly reduced compared to conventional processes by-products are fully utilized. Hydrogen produced can be used to generate electricity, as can heat generated from other sources within the process.

A thermal energy storage (TES) system converts variable renewable electricity (VRE) to continuous heat at over 900° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. Configurations of simple cycle systems and combined cycle power plants using thermal energy storage units can provide even greater efficiency and responsiveness.

A process for process for generating power in an ammonia-fueled gas turbine power plant includes flowing an ammonia feed stream to an ammonia cracker reactor in geographical proximity to an ammonia-fueled gas turbine power plant to crack ammonia feed stream under cracking conditions, thereby producing a product effluent comprising ammonia and hydrogen, flowing the product effluent comprising ammonia and hydrogen to an ammonia-fueled gas turbine of an ammonia-fueled gas turbine power plant, and combusting the product effluent comprising ammonia and hydrogen to drive the ammonia-fueled gas turbine. An exhaust gas stream generated from the ammonia-fueled gas turbine is recycled back to supply heat to the ammonia cracker reactor.

A method and an apparatus for treating comminuted waste material the method comprising: •a) providing a heating chamber (28) and one or more combustion heating means (40a-f) for heating the contents of the heating chamber (28), the heating chamber (28) having an inlet (21) and an outlet (22), •b) feeding comminuted waste material through the inlet (21) and into the heating chamber (28); •c) heating the comminuted waste material in the heating chamber (28), using the combustion heating means (40a-f), to generate a combustible gas; and •d) supplying at least a portion of the generated combustible gas to the one or more combustion heating means (40a-f) for heating the heating chamber (28).

A system includes a heat exchanger having a plurality of tubes arranged in a tube bundle having opposite first and second sides, opposite third and fourth sides extending from the first side to the second side, and opposite fifth and sixth sides extending from the first side to the second side, wherein the fifth and sixth sides extend between the third and fourth sides. The heat exchanger further includes a plurality of external flow lanes extending across the tube bundle and between the fifth and sixth sides outside of the plurality of tubes. Each tube of the plurality of tubes comprises a plurality of tubing portions extending in opposite first and second directions between the first and second sides in a sequence, and each successive tubing portion in the sequence switches lanes between the plurality of external flow lanes relative to a preceding tubing portion.

The invention discloses steam turbine high-low pressure bypass heat supply equipment, which relates to the technical field of heat energy engineering and power machinery, and comprises a signal acquisition module, an offset early warning module, a correction control module and a stable operation module, and constructing a time anchor point set, and generating a phase residual frequency spectrum for identifying a steam flow fluctuation source. According to the method, signals are collected through a unified time base line, a steam fluctuation source is identified in combination with a phase residual frequency spectrum, an impact track is reconstructed through phase conjugate inversion, and an overtemperature risk window is identified. Feedforward correction control is generated through track playback and predictive mapping, real-time rearrangement of valve behaviors is achieved, and the operation stability and the overtemperature resistance of the steam turbine under the deep peak regulation and disturbance conditions are improved.

The utility model provides a heat transfer strengthening structure, a heat transfer strengthening pipe and a preheating device. The heat transfer strengthening structure comprises a coal water slurry pipe and at least one protrusion distributed on the inner wall of the coal water slurry pipe. The ratio of the height of the protrusions to the inner diameter of the coal water slurry pipe is (1-8): 50. The heat transfer strengthening pipe comprises the heat transfer strengthening pipe structure. The preheating device comprises a shell and the heat transfer strengthening pipe located in the shell. According to the heat transfer strengthening structure, the protrusions are arranged on the inner wall of the coal water slurry pipe and serve as inner wall face modification, blocking during flowing of coal water slurry is prevented, and heat transfer strengthening is facilitated.

The invention provides a method, device and equipment for controlling the steam drum water level of a gas-steam combined cycle unit. The method comprises the steps that the opening degree of an inlet guide vane of a gas compressor, the turbine exhaust temperature, the feed water flow, the steam flow, a steam drum water level set value and the steam drum water level are obtained in real time; according to the opening degree of an inlet guide vane of a gas compressor and the exhaust temperature of a turbine, the gas turbine side feed-forward control quantity is determined; according to the steam drum water level set value and the steam drum water level, a first PID controller is adopted to determine an original feed water flow set value; according to the feed water flow, the steam flow, the original feed water flow set value and the gas turbine side feed-forward control quantity, a second PID controller is adopted to determine a first feed water adjusting valve opening instruction; and adjusting the opening degree of the feed water adjusting valve according to the first feed water adjusting valve opening degree instruction, and controlling the steam drum water level of the gas-steam combined cycle unit. According to the invention, reliable guarantee is provided for safe and efficient operation of the unit through a cooperative regulation mechanism of the gas turbine side feed-forward control quantity and three-impulse control.

The present invention relates to a heat exchange substation (50) of an energy distribution system comprising: a heat exchanger (51) with thermal inertia comprising a primary side (37a) connected to a primary supply line (36) and to a primary return line (37) and a secondary side (37b), opposite the first primary side (37a), the secondary side (37b) being connected to a secondary supply line (56) and to a secondary return line (57) of a secondary heating circuit (68), the secondary supply and return lines (56, 57) being in communication with one or more heating units (18), wherein the heat exchanger (51) comprises a tank (67) within which a first shell- and-tube circuit (81) is arranged connected at the inlet to the primary supply line (36) and at the outlet to the primary return line (37) and a second shell-and-tube circuit (82) connected at the inlet to the secondary return line (57) and at the outlet to the secondary supply line (56), and the tank (67) contains a phase change material (71), the first shell-and-tube circuit (81) and the second shell-and- tube circuit (82) being in contact with the phase change material (71).

The present application relates to the technical field of cooling water system control, especially to a self-shutdown control method for a closed cycle cooling water system of a gas turbine combined cycle unit. The closed cycle cooling water system comprises multiple closed water pumps and multiple closed coolers. The present application realizes full automatic control of three closed water pumps, optimizes the standby logic of the closed water pumps, sets up a primary standby function and a secondary standby function, and integrates all the three closed water pumps into the shutdown control process. Through the closed cooler shutdown process and the closed water pump shutdown process, the most suitable closed cooler and closed water pump are automatically selected for shutdown, and the shutdown of the closed cycle water system is realized in an orderly and efficient manner according to the established rules. Without the need for human judgment and operation by the operation personnel, the full automatic shutdown of the closed cycle cooling water system is realized without disturbing the stable operation state of the unit, and the labor intensity of the operation personnel is reduced, and the safety and the automation level of the unit are improved.

The invention relates to a method for optimizing a district heating network (1) comprising outgoing supply pipes and incoming return pipes, wherein a heat carrying fluid is circulated to be utilized for residential and commercial heating requirements. For storing excess thermal energy available at the district heating network, the method involves the steps of implementing more than one ground-based borehole thermal energy storage (4) as distributed heat storages at different locations of or along the district heating network (1). Each heat storage (4) is adapted to receive thermal energy from various forms of heat sources, which heat sources may be found at different locations of or along the district heating network (1) such, that the heat sources and the heat storages forming nodes in the district heating network (1). Excess thermal energy available to one node of the district heating network (1) is used to charge a borehole thermal energy storage (4) at one or several nodes, and thermal energy available from the borehole thermal energy storages (4) is at disposal to be used to heat the heat carrying fluid circulated in the supply pipes of the district heating network.

To provide a heat exchanger system.SOLUTION: In one aspect, the disclosed embodiments relate to a system. The system may include a turbine and a regenerative heat exchanger system. The regenerative heat exchanger system is configured to receive the exhaust gas from the turbine. The regenerative heat exchanger system may include a pre-cooling section for cooling the exhaust gas, a primary heating section for receiving the cooled exhaust gas, and a secondary heating section for receiving the cooled exhaust gas.SELECTED DRAWING: None

The application relates to a combined heat and power system, which comprises a boiler, a generator unit, a molten salt heat storage subsystem and a steam heat storage subsystem; the generator unit comprises a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder; the molten salt heat storage subsystem comprises a cold salt tank, a hot salt tank, a heat storage heat exchanger and a heat supply heat exchanger, the heat storage heat exchanger is provided with a first low-temperature medium flow channel and a first high-temperature medium flow channel, the heat supply heat exchanger is provided with a second low-temperature medium flow channel and a second high-temperature medium flow channel; the first high-temperature medium flow channel is connected with a steam extraction end of the medium-pressure cylinder; one end of the second low-temperature medium flow channel is connected with a water supply end, and the other end is connected with a heat user; the steam heat storage subsystem comprises a steam heat storage tank, an input end of the steam heat storage tank is connected with the steam extraction end of the medium-pressure cylinder, an output end is connected with a steam inlet end of the low-pressure cylinder, and the steam heat storage tank has the advantages of being able to meet different scheduling requirements and increasing the flexibility of scheduling.

The utility model discloses a power plant thermotechnical instrument convenient for ash removal, which comprises an instrument body, an air inlet and an air outlet are respectively arranged on two sides of the instrument body, a dustproof component capable of being rotatably opened is arranged in the air inlet, and a fixing component used for fixing the dustproof component is arranged on the upper surface of the instrument body and close to one side of the air inlet. According to the utility model, the instrument body, the dustproof assembly, the heat dissipation assembly, the fixing assembly and the cooling fins are arranged, the dustproof assembly is installed at the air inlet of the instrument body, the dustproof assembly comprises the frame plate and the first dustproof net located in the frame plate, the heat dissipation assembly comprises the annular plate and the side cover, and the frame plate is rotatably connected with the air inlet through the hinge; the top of the frame plate is clamped and fixed through the fixing assembly, when dust on the first dustproof net needs to be cleaned every time, the frame plate can be rotationally opened by removing extrusion and fixation of the fixing assembly on the frame plate, and therefore the first dustproof net in the middle of the frame plate can be conveniently cleaned.

The present application relates to the technical field of energy utilization, and particularly to a combined heat and power generation system capable of efficiently and flexibly heating by means of dual-unit combined supply, comprising a high backpressure unit and a conventional unit, and further comprising a first-stage heating unit, a second-stage heating unit, a third-stage heating unit, and a fourth-stage heating unit. In the present application, four stages of different heating units are provided and are simultaneously communicated with a conventional backpressure unit and the high backpressure unit, and a low-pressure cylinder crossover pipe heating mode and a low-pressure cylinder zero-output heating mode are flexibly selected on the basis of the total steam consumption demand of the third-stage and fourth-stage heater in combination with the real-time electric load condition of the conventional backpressure unit, so that the heating load of the units can be adjusted more flexibly; and when an electric load is determined, the external heating loads of the conventional and high backpressure units can fluctuate between -50% and +50%, and a high thermal-electric decoupling capability is realized.

A system, for recirculating exhaust gas includes a combined cycle power plant including a heat recovery steam generator (HRSG), a gas turbine system, and an exhaust gas recirculation assembly downstream from the HRSG for receiving the exhaust gas. The exhaust gas recirculation assembly includes a direct contact cooler (DCC) in flow communication with the gas turbine system. The system also includes a computing device(s) in communication with the power plant. The computing device(s) is configured to control the combined cycle power plant by performing processes including measuring a characteristic of the exhaust gas downstream from the exhaust gas recirculation assembly and comparing the measured characteristic of the exhaust gas to a predefined characteristic threshold or a predefined characteristic range for the exhaust gas. The computing device(s) also performs processes including adjusting operational parameters of the exhaust gas recirculation assembly, and / or a distinct portion of the combined cycle power plant.

The present invention is entitled a gas turbine module ventilation system with controllable guide vanes. The present invention discloses a turbine ventilation system (26) including a controller (52) coupled to an actuator (32) coupled to a blade (34) disposed at an inlet (36) between a gas turbine housing (12) and the turbine ventilation system (26). The controller (52) can cause the actuator (32) to change the position of the blade (34) to alter the airflow entering the gas turbine housing (12) from the turbine ventilation system (26) based on feedback from one or more sensors (58) disposed within the gas turbine housing (12).

A combined vessel includes a stripping section for removing acidic gases from an acidic water stream and a direct-contact heat exchanger section for heating an ash water stream, to improve heat and mass transfer in water stream treatment and recirculation for gasification processes.

The invention relates to a flexible method and a system for production of hot water (district heating) by integration of a biomass heating system and an electrical heat pump system, so that district heating can be produced in an optimal way – with high efficiency via the heat pump system and / or the biomass heating system. Such high efficient and fuel flexible system is especially attractive when fuel- and electricity prices are varying.

The application relates to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof, and belongs to the field of coal gasification combined cycle power generation coupled with biomass, in particular to an IGCC system coupled with biomass and near-zero emission high-purity CO2 capture and a working method thereof. The application is used for solving the problems that the existing IGCC system has low CO2 capture rate, high energy consumption, low power generation efficiency, and a large amount of nitrogen generated in the oxygen taking process and difficult to effectively utilize. The application comprises an air separation device, a gasification furnace, a sensible heat recovery device, a purification device, a gas power generation unit, a waste heat recovery unit, a steam power generation unit, a biomass fermentation device, a methane reforming unit, an adsorption separation unit and an ammonia synthesis tower. The application is based on the overall coal gasification combined cycle power generation system of post-combustion CO2 capture and oxygen-enriched combustion technology, introduces a biomass ammonia synthesis process, generates H2 and CO through biomass fermentation and reforming, utilizes N2, and improves the system efficiency.

This invention discloses a flue gas recirculation gasification burner, comprising a central tube, a first annular channel outside the central tube, a second annular channel outside the first annular channel, a third annular channel outside the second annular channel, and a fourth annular channel outside the third annular channel. A cylindrical jacket is fixedly installed inside the third annular channel. An annular distribution seat is fixedly connected to the upper end of the fourth annular channel. Several nozzles evenly distributed in a ring array are fixedly installed on the upper side of the distribution seat. The tail of the nozzles is connected to the fourth annular channel through a conduit located in the distribution seat. The central tube and the fourth annular channel are used to introduce oxygen. The high-speed injection of oxygen from the outer side through the nozzles creates a recirculation zone near the burner nozzle, entraining the recirculated flue gas to form a flue gas recirculation, achieving staged mixing and combustion, thereby reducing the temperature at the burner nozzle and extending its lifespan. Simultaneously, it extends the residence time of the syngas, effectively improving the gasification reaction efficiency.

To provide a control device, a control method and a control program for a steam power generation plant which allows separation of some steam generators while maintaining a stable operation state.SOLUTION: At least one of steam supply systems in a composite cycle power generation plant comprises: a first steam generator; a first passage in which steam generated by the first steam generator flows; a second steam generator; a second passage in which steam generated by the second steam generator flows; a third passage connecting a merging part of the first passage and the second passage and a steam turbine; and a bypass passage branching from the first passage. A first cutoff valve and a second cutoff valve are arranged in the first passage and the second passage, and a bypass valve is arranged in the bypass passage. In such a plant, an opening operation from a full-closed state of the bypass valve is started at a separation start timing of starting a closing operation from a full-open state of the first cutoff valve with the second cutoff valve fully opened.SELECTED DRAWING: Figure 2

This prevents leakage of lubricating oil sealed in the bearings located in the exhaust chamber during a sudden load reduction operation of a gas turbine. [Solution] The gas turbine system according to the present invention comprises a gas turbine, a heat recovery device for recovering waste heat from the exhaust gas of the gas turbine, a blower for supplying the exhaust gas of the heat recovery device, and a carbon dioxide recovery device for recovering carbon dioxide from the exhaust gas. The exhaust chamber of a gas turbine houses a bearing section that rotatably supports the gas turbine rotor. Sealing air is supplied to the bearing section by a sealing air supply system. If the gas turbine's operating state is determined to be a sudden load reduction operation, the sealing air supply system is controlled to increase the flow rate of sealing air compared to the gas turbine's normal operation.

The device comprises a base, a gas internal combustion engine, an air-cooled generator, a heat supply module, a gas inlet module, a water inlet module, a water outlet module, an afterburning furnace and an exhaust module, the gas internal combustion engine is fixedly connected with the base, the air-cooled generator is fixedly connected with the base, and the gas internal combustion engine is fixedly connected with the air-cooled generator. The air inlet module is fixedly connected with the gas internal combustion engine, the air inlet module is fixedly connected with the afterburning furnace, the heat supply module is fixedly connected with the gas internal combustion engine, the water inlet module is fixedly connected with the heat supply module, the water inlet module is fixedly connected with the afterburning furnace, the afterburning furnace is fixedly connected with the water outlet module, and the afterburning furnace is fixedly connected with the exhaust module. The heat supply module is fixedly connected with the water outlet module, and the heat supply module is fixedly connected with the exhaust module; the invention relates to the technical field of cogeneration equipment, and has the advantages of high efficiency, energy conservation, stable water supply, convenience in maintenance and the like.

The present application relates to the technical field of thermoelectricity, and more particularly to a combined peak shaving system and method of electrode boiler and heat storage tank of a combined heat and power unit, which deeply integrates the electrode boiler, the heat storage tank and a low-temperature waste heat recovery module of the unit, and additionally adds an intelligent control unit to realize accurate linkage of pipeline connection and peak shaving instructions. In deep peak shaving, the three work cooperatively in time, space and grade: the electrode boiler responds quickly to provide main heat-electricity decoupling capacity; at the same time, the low-temperature waste heat recovery module recovers the waste heat that may be wasted when the unit is operated at low load; and the heat storage tank realizes fluctuation suppression and storage of heat from the above-mentioned multiple sources. This coupling solves the defects of a single technical path and realizes synergistic effect.