Thermal power peak regulation system based on solid oxide fuel cell, and working method thereof

A technology of solid oxides and fuel cells, applied in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of limited peak-shaving depth of large-scale units, to improve work capacity, ensure efficiency, increase regulation Effect of peak depth

Pending Publication Date: 2021-12-14
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the minimum stable combustion load, etc., the depth of participation of large units in peak regulation is limited

Method used

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  • Thermal power peak regulation system based on solid oxide fuel cell, and working method thereof

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] see figure 1 , a thermal power peak shaving system based on solid oxide fuel cells, including a solid oxide fuel cell 1, the cathode 2 of the solid oxide fuel cell 1 is connected to a hydrogen tank 3 and a reheat steam outlet pipe, and the reheat steam is reheated from a boiler 12 The hot steam is drawn from the side (temperature exceeds 600° C.), the anode 4 of the solid oxide fuel cell 1 is connected to the oxygen tank 7 , the solid oxide fuel cell 1 is connected to the inverter 5 , and the inverter 5 is connected to the generator 6 . Both the cathode 2 and the anode 4 of the solid oxide fuel cell 1 are connected to a catalytic combustion chamber 8 . A cathode heat exchanger 9 is provided on the pipeline between the hydrogen tank 3 and the cathode 2 of the solid oxide fuel cell 1 , and an anode heat exchanger 10 is provided on the pipeline between the oxygen ...

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Abstract

The invention discloses a thermal power peak regulation system based on a solid oxide fuel cell,and a working method thereof. The frequency modulation capacity of the system is improved by additionally arranging a solid oxide fuel cell system in a unit steam system; power generation is supplemented through oxidation reaction of hydrogen and oxygen during power utilization peak, and steam generated after combustion of the incompletely reacted part is supplemented to the system, so that the power capability of the system is improved, and the flexibility of the unit is improved; the steam in the steam system of the unit is electrolyzed for energy storage in the low ebb of electricity consumption, so that the power supply amount of the unit is reduced, and the peak regulation depth is increased; the positive reaction efficiency and the reverse reaction efficiency of the solid oxide fuel are both high, and the efficiency of the whole system can be guaranteed; and the solid oxide fuel has the characteristic of low pollution, and more polluting gases cannot be generated in the whole process.

Description

technical field [0001] The invention belongs to the field of thermal power generation, and in particular relates to a thermal power peak regulation system and working method based on a solid oxide fuel cell. Background technique [0002] With the rapid development of the economy and the improvement of people's living standards, great changes have taken place in the structure of electricity consumption, and the valley-peak difference of the power grid is increasing day by day; The demand for capacity and operational flexibility is getting higher and higher, making more and more high-parameter and large-capacity thermal power units shoulder the responsibility of power grid peak regulation. However, limited by the minimum stable combustion load, the depth of participation of large units in peak regulation is limited. How to make thermal power units have a better peak-shaving depth to meet the needs of the rapid development of new energy on the premise of ensuring the safety of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1231H01M8/04014H02J3/24H02J3/46F01D15/10
CPCH01M8/1231H01M8/04022H02J3/24H02J3/466F01D15/10H02J2300/40Y02E60/50
Inventor 薛朝囡许朋江石慧张建元王妍邓佳吕凯温婷
Owner XIAN THERMAL POWER RES INST CO LTD
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