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Solid oxide fuel cell tail gas treatment system and treatment method

A solid oxide and fuel cell technology, applied in fuel cells, electrical components, circuits, etc., can solve problems such as low energy utilization, achieve the effects of reducing emissions, energy-saving utilization, and avoiding energy waste

Pending Publication Date: 2019-03-15
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the energy conversion system described in this invention can realize the reversible conversion of power generation and energy storage, this system is only suitable for the fuel gas of H 2 It can only be used when it is used, which is obviously inconsistent with the actual situation, and the inventor did not describe the treatment method of the solid oxide fuel cell exhaust gas, and the waste heat of the solid oxide fuel cell is recovered only to turn water into water vapor Provided to the solid oxide electrolytic cell, the energy utilization rate is not high

Method used

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  • Solid oxide fuel cell tail gas treatment system and treatment method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0045] Example 1 Solid Oxide Fuel Cell Exhaust Gas Treatment System Based on Solid Oxide Electrolyzer

[0046] Solid oxide fuel cell tail gas treatment system based on solid oxide electrolytic cell, including solid oxide fuel cell, solid oxide electrolytic cell, heat transfer control system, tail gas transfer system, CO / H 2 Recovery transfer system, CO 2 / H 2 O Recovery system, fuel supply system, power load and low-peak / peak-shaving power supply device. The solid oxide fuel cell is connected with the electric load, and the generated electric energy is delivered to the electric load; the fuel supply system is connected with the anode of the solid oxide fuel cell, and provides fuel gas for the solid oxide fuel cell; the solid oxide fuel cell The anode of the battery is connected to the anode and cathode of the solid oxide electrolytic cell through the tail gas transmission system, and a flow control system is set between the tail gas transmission system and the solid oxide el...

Embodiment 2

[0047] Example 2 Solid Oxide Fuel Cell Tail Gas Treatment Method 1 Based on Solid Oxide Electrolyzer

[0048] S1, the air is passed into the cathode side of the solid oxide fuel cell, and the oxygen in the air is reduced to oxygen ions by the electrolyte.

[0049] S2. At this time, the fuel gas gas is passed into the anode side of the solid oxide fuel cell through the fuel supply system, and the oxygen ions permeated by the electrolyte enter the anode and H 2 combined to form H 2 O, combined with CO to form CO 2 , producing CO 2 and H 2 O, and release electrons to the external circuit for power generation, which is connected to the converter and electric load.

[0050] S3, the exhaust gas produced by the solid oxide fuel cell anode has CO 2 and H 2 In addition to O, there is also part of the unreacted fuel gas, and the tail gas is transported to the solid oxide electrolytic cell anode and cathode by the tail gas transmission system, and at the anode, the H in the tail ga...

Embodiment 3

[0052] Example 3 Solid Oxide Fuel Cell Tail Gas Treatment Method 2 Based on Solid Oxide Electrolyzer

[0053] S1, the air is passed into the cathode side of the solid oxide fuel cell, and the oxygen in the air is reduced to oxygen ions by the electrolyte.

[0054] S2. At this time, the fuel gas gas is passed into the anode side of the solid oxide fuel cell through the fuel supply system, and the oxygen ions permeated by the electrolyte enter the anode and H 2 combined to form H 2 O, combined with CO to form CO 2 , producing CO 2 and H 2 O, and release electrons to the external circuit for power generation, which is connected to the converter and electric load.

[0055]S3, the exhaust gas produced by the solid oxide fuel cell anode has CO 2 and H 2 In addition to O, there are some unreacted fuel gases, and the tail gas is transported to the anode and cathode of the solid oxide electrolytic cell through the tail gas transmission system. A flow control system is arranged be...

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Abstract

The invention discloses a solid oxide fuel cell tail gas treatment system and a treatment method therefore. The system comprises a solid oxide fuel cell, a solid oxide electrolytic tank, a heat transfer control system, a tail gas transmission system, a flow control system, a CO / H2 recycling transmission system, a CO2 / H2O recycling system, a fuel supply system, and power utilization load and off-peak electricity / peak-regulation power supply device. The system utilizes the tail gas and heat produced by the solid oxide fuel cell, not only provides the heat for the solid oxide electrolytic tank, but also can convert the tail gas; the fuel energy utilization rate of the solid oxide fuel cell is improved, the pollutant emission is reduced, and an open-circuit voltage of the solid oxide electrolytic tank is reduced, and the power consumption of the solid oxide electrolytic tank is reduced.

Description

technical field [0001] The invention belongs to the technical field of energy utilization, and relates to a solid oxide fuel cell tail gas treatment system based on a solid oxide electrolytic cell. Background technique [0002] The continuous and massive consumption of fossil energy has caused the CO in the atmosphere to 2 The increasing concentration will cause the greenhouse effect to increase year by year. Developing and utilizing new energy sources such as solar energy, wind energy, and geothermal energy, and reducing the burning of fossil fuels are effective ways to practice energy conservation and emission reduction. Among them, solid oxide fuel cell (SOFC) has attracted more and more attention as a high-efficiency and low-pollution power generation device. [0003] The solid oxide fuel cell belongs to the third generation of fuel cells. It is an all-solid-state chemical power generation device that directly converts the chemical energy stored in fuel and oxidant int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04119H01M8/0668
CPCH01M8/04119H01M8/0668Y02E60/50
Inventor 付峻青杨志宾苏春生王宁张海峰李亚超
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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