IGCC power station coupling water electrolysis equipment system and operation method thereof

An electrolysis equipment, water electrolysis technology, applied in the electrolysis process, electrolysis components, electrical components, etc., can solve the problems of the inability to realize the IGCC power station to respond to power grid frequency regulation, and the complex composition of the air separation system, so as to increase the operating efficiency and improve the gas production rate. , the effect of improving quality

Pending Publication Date: 2021-06-18
HUANENG CLEAN ENERGY RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Although this method uses the energy storage part of the air separation system to realize the enhancement of the peak-shaving capacity of the IGCC power station, due to the complex composition of the air separation system and the energy storage in the form of liquid oxygen, it is impossible to use the air separation system and liquid oxygen energy storage to achieve minute Level or even second-level power changes and load responses, therefore, it is impossible to meet the requirements of IGCC power plants to respond to grid frequency regulation

Method used

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  • IGCC power station coupling water electrolysis equipment system and operation method thereof
  • IGCC power station coupling water electrolysis equipment system and operation method thereof

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Embodiment 1

[0050] Embodiment 1: An IGCC power station coupling water electrolysis equipment system, including IGCC power station conventional equipment: coal pretreatment device 1, coal gasification furnace 2, air separation device 7, gas turbine 5, waste heat boiler 6, gas turbine generator 9, steam turbine generator 10 and power transmission module 11,

[0051] It also includes water electrolysis equipment 8 and its power supply line, oxygen supply pipeline, hydrogen supply pipeline, hydrogen storage tank and oxygen storage tank. The power supply line of the water electrolysis equipment is connected to the IGCC power station electric energy output terminal and the grid. The electricity generated by the IGCC power station or the electricity delivered by the power grid is electrolyzed to produce hydrogen and oxygen; the oxygen supply pipeline of the water electrolysis equipment is connected to the oxygen supply pipeline of the coal gasifier, and the oxygen produced by the water electrolys...

Embodiment 2

[0053] The system of the present invention is also provided with a peak regulation and frequency regulation control module, the peak regulation and frequency regulation control module is connected to the control terminal of the electric energy output of the IGCC power station, and the peak regulation and frequency regulation control module controls the increase of the electric load power delivered by the generator to the water electrolysis equipment Or reduce, in response to the grid's peak and frequency regulation load demand for IGCC power plants.

Embodiment 3

[0055] The power supply line of the water electrolysis equipment 8 is connected to the power output terminal of the IGCC power station, the power grid, the plant power supply and the step-up transformer through the power transmission and transformation and power supply module 111, that is, the power source of the water electrolysis equipment 8 has a generator outlet bus 12 Any one or combination of power supply, plant power supply, main step-up transformer power supply, and power grid off-grid power supply; it is conducive to improving the continuous reliability of the working power supply of water electrolysis equipment, and can also absorb abundant electric energy.

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Abstract

The invention discloses an integrated gasification combined cycle (IGCC) power station coupling water electrolysis equipment system and an operation method. The system comprises IGCC power station conventional equipment, water electrolysis equipment, and a power supply line, an oxygen supply pipeline, a hydrogen supply pipeline, a hydrogen storage tank and an oxygen storage tank of the water electrolysis equipment. The power supply line of the water electrolysis equipment is connected with an electric energy output end of an IGCC power station and a power grid. The water electrolysis equipment electrolyzes water to prepare hydrogen and oxygen by utilizing electric power generated by the IGCC power station or electric power conveyed by the power grid. The oxygen supply pipeline of the water electrolysis equipment is connected with an oxygen supply pipeline of a coal gasifier, and oxygen generated by the water electrolysis equipment is used to partially replace oxygen prepared by an air separation device. The water electrolysis equipment can quickly change the power supply power and load characteristics at any time, so that the peak and frequency regulation load requirements of the power grid on the IGCC power station are met. Oxygen generated by the water electrolysis equipment is used for the coal gasifier, so that the oxygen cost of the gasifier is reduced, and the operation cost of the air separation system is also reduced.

Description

technical field [0001] The invention belongs to the field of IGCC power generation, and in particular relates to an IGCC power station coupled water electrolysis equipment system and an operating method thereof. Background technique [0002] The global climate issue has attracted more and more attention from people, and the "low-carbon economy" characterized by low energy consumption, low emission and low pollution has become a hot spot in the global political and economic game. my country's power supply is mainly based on coal power. In order to reduce soot-type pollution, vigorously developing coal-fired technology is a research direction that improves coal use efficiency, reduces pollution, and is economically feasible. IGCC power generation technology not only has the high efficiency of combined cycle, but also solves the environmental pollution problem caused by coal-fired power generation. [0003] IGCC is a clean coal power generation technology that organically inte...

Claims

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Application Information

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IPC IPC(8): C25B9/19C25B9/60C25B9/65C25B1/04C25B15/02C25B9/67H02J3/24H02J3/28H02J3/46
CPCC25B1/04C25B15/02H02J3/28H02J3/241H02J3/46Y02P20/129Y02E60/36Y02E70/30
Inventor 杨豫森周贤王保民姚国鹏
Owner HUANENG CLEAN ENERGY RES INST
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