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MCFC hybrid power system capable of regulating CO2 recovery rate and operation method

A technology of compound power and recovery rate, which is applied to machines/engines, fuel cell parts, fuel cells, etc., can solve the problems of decreased efficiency and low power generation efficiency, and achieve the effect of improving power generation efficiency and high efficiency

Active Publication Date: 2015-04-22
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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AI Technical Summary

Problems solved by technology

The traditional power generation method is limited by the Carnot cycle, the power generation efficiency is low, and the capture of CO 2 will further reduce the efficiency

Method used

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  • MCFC hybrid power system capable of regulating CO2 recovery rate and operation method
  • MCFC hybrid power system capable of regulating CO2 recovery rate and operation method
  • MCFC hybrid power system capable of regulating CO2 recovery rate and operation method

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Embodiment Construction

[0026] The invention provides an adjustable CO 2 The MCFC compound power system and operation method of recovery rate will be further described below with reference to the drawings and specific embodiments.

[0027] The benchmark system does not recover CO 2 System, its structure diagram such as figure 1 Shown. The fuel and the recycled part of the anode exhaust are mixed in the first mixer 1 and then enters the pre-reformer 2 for reforming, and then enters the anode of the MCFC stack 4, and the air and the recycled part of the afterburner exhaust are mixed in the second After mixing, the reactor 16 is preheated by the second heat exchanger 10, and then enters the cathode of the MCFC stack 4, where an electrochemical reaction occurs in the stack, and the DC / AC converter 5 and the first generator 6 output electrical energy. After that, the anode exhaust is divided into two paths by the first separator 3: one is circulated back to the first mixer 1 to preheat the fuel and prevent r...

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Abstract

The invention belongs to the technical field of MCFC hybrid power systems, and in particular relates to an MCFC hybrid power system capable of regulating CO2 recovery rate and an operation method. A deep cooling air separation device is replaced by an integrated ITM to produce pure oxygen, and the pure oxygen is fed into a afterburner chamber together with battery anode exhaust gas to be completely combusted; the product only includes CO2 and H2O; then a part of exhaust gas is circulated to a battery cathode so as to supply CO2 required for cathodic reaction; the afterheat of the other part of exhaust gas is recovered by virtue of an afterheat boiler; tail gas and the air are subjected to heat exchange and condensation to separate out water; the surplus CO2 is compressed into a liquid state by using a three-level intercooling carbon dioxide compressor; one circulation is additionally arranged on a battery cathode, and the CO2 recovery rate of the MCFC hybrid power system can be adjusted by changing the proportion of the recycle gas. According to the system, the afterheat of the high-temperature exhaust gas of MCFC is fully utilized, along with the matching temperature, the energy consumption caused by separation and capture of CO2 is reduced while the system efficiency is improved, the power consumption is saved, and the CO2 recovery rate can be regulated by virtue of the new system through additionally-arranged cathodic circulation.

Description

Technical field [0001] The invention belongs to the technical field of a molten carbonate fuel cell (MCFC) compound power system, and in particular relates to an adjustable CO 2 MCFC compound power system with recovery rate and operation method. Background technique [0002] Excessive emissions of greenhouse gases intensify the greenhouse effect. As the most important greenhouse gas, CO 2 The reduction of emissions has attracted widespread global attention. The traditional power generation method is limited by the Carnot cycle, which has low power generation efficiency and captures CO 2 Will further reduce efficiency. The molten carbonate fuel cell (MCFC) generates electricity through an electrochemical reaction process, which breaks through the limitations of the Carnot cycle efficiency, and its high exhaust temperature makes it easy to integrate with other systems, further improving system efficiency. At the same time, the pure oxygen produced by ITM low energy consumption can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/14H01M8/02H01M8/04H01M8/06F01D15/10H01M8/04014H01M8/04089H01M8/0612
CPCF01D15/10H01M8/02H01M8/04014H01M8/04089H01M8/04694H01M8/0606H01M8/0668H01M8/14H01M8/145H01M2008/147Y02E60/50
Inventor 段立强乐龙杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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