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Solid oxide fuel cell coke oven gas power generation process and device

A solid oxide, fuel cell technology, used in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problems of methane reaction is not easy to complete, battery failure, carbon deposition and other problems, to improve energy utilization efficiency , The effect of reducing the requirements of pressure resistance and reducing investment costs

Active Publication Date: 2021-04-27
XINDI ENERGY ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the SOFC battery, due to the high temperature operation, the methane reaction is not easy to complete, and carbon deposits will be generated, which will gradually cause the battery to fail.

Method used

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  • Solid oxide fuel cell coke oven gas power generation process and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The air is pressurized to a pressure of 10kPa through the air compressor 6 through the pipeline j, and the air carried out through the air compressor 6 enters the air filter 7 through the pipeline k to remove impurities such as particles in the air, and passes through the buffer tank (not shown in the figure) out) Adjust the pressure to 3.0kPa, through the pipeline 1, the gas flow meter 8 adjusts the gas flow to 10.0m 3 / h flow, and then enter the air side inlet of the SOFC fuel cell stack 5 after heat exchange to 620°C through the heat exchanger 10. Coke oven gas (1.2m 3 / h) After the gas compressor 1, the gas is sent to the buffer tank (not shown in the figure) to adjust the pressure to a pressure of 3.0 MPa so as to be sent to the subsequent section, and then enter the desulfurization device 2 through the pipeline b to remove the coke oven gas Hydrogen sulfide gas (until the content of hydrogen sulfide gas is less than 0.8ppm), enter the methane steam reformer 3 thr...

Embodiment 2

[0038] The air is pressurized to a pressure of 10kPa through the air compressor 6 through the pipeline j, and the air carried out through the air compressor 6 enters the air filter 7 through the pipeline k to remove impurities such as particles in the air, and passes through the buffer tank (not shown in the figure) out) adjust the pressure to 2.5kPa, through the pipeline l, the gas flow meter 8 adjusts the gas flow to 8.0m 3 / h flow, and then enter the air side inlet of the SOFC fuel cell stack 5 after heat exchange to 620°C through the heat exchanger 10. Coke oven gas (1.0m 3 / h) After the gas compressor 1, the gas is compressed to a pressure of 3.0 MPa so as to be transported into the subsequent section, and then enters the desulfurization device 2 through the pipeline b to remove the hydrogen sulfide gas in the coke oven gas (until the hydrogen sulfide gas content is lower than 0.8 ppm), enter the methane steam reformer 3 through pipelines c and d, and the methane steam r...

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Abstract

The invention relates to a solid oxide fuel cell (SOFC) coke oven gas power generation process and device. The process includes: (A) pressurizing the air, and then entering the SOFC battery stack after heat exchange; (B) putting the coke oven After the gas is pressurized, it enters the desulfurization device to remove the hydrogen sulfide gas in the coke oven gas, and then sends it to the methane steam reformer for methane reforming at 700‑1000 ° C, converting methane into carbon monoxide, hydrogen and a small amount of carbon dioxide. The reformed gas stream containing hydrogen, carbon monoxide, a small amount of carbon dioxide and water vapor is sent to the SOFC fuel cell stack to chemically react with the above-mentioned air to generate electricity.

Description

technical field [0001] The invention relates to a solid oxide fuel cell (SOFC) coke oven gas power generation process and device. Background technique [0002] With the country's higher and higher requirements for environmental protection, the coking industry has paid more and more attention to the utilization of coke oven tail gas. At present, there are mainly several ways of coke oven gas power generation: gas steam turbine power generation, gas turbine power generation, gas internal combustion engine power generation, and gas-liquid fluid power generation unit. However, these traditional coke oven gas power generation methods mainly convert chemical energy into thermal energy and mechanical energy and then into electrical energy, in which the energy loss is very large, and the environmental pollution is also relatively large. [0003] The main components of coke oven gas are relatively complex, mainly containing: hydrogen (more than 50%), methane (20-30%), carbon monoxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0612H01M8/0662H01M8/04014C10K1/00
CPCC10K1/00C10K1/004H01M8/04022H01M8/0618H01M8/0662H01M8/0675Y02E60/50
Inventor 冯璐瑶史立杰李晨佳张永泽常俊石
Owner XINDI ENERGY ENG TECH
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