A closed fuel cell hydrogen source system

Abstract

A closed fuel cell hydrogen source system, including a methanol supply device, a liquid oxygen device, a carbon dioxide storage device, a water storage device, a heat transfer oil storage system, and a methanol hydrogen production device system; wherein: the methanol hydrogen production device includes a combustion evaporator , reformer, burner, carbon monoxide selective oxidation reactor and other auxiliary systems; the overall modularization of burner, reformer, evaporator and CO selective oxidation reactor; the methanol supply device, liquid oxygen device It is connected with the inlet of the methanol hydrogen production device; the heat transfer oil storage system is connected with the inlet and outlet of the methanol hydrogen production device; the carbon dioxide storage device and the liquid water storage device are respectively connected with the inlet and outlet of the methanol hydrogen production device. The invention has the advantages of realizing closed operation of the whole system. The consumption of methanol fuel is saved, the energy utilization of the whole system is further improved, and the structure of the reforming hydrogen production system is compact.

Description

technical field [0001] The invention relates to the field of closed-type hydrocarbon fuel reforming hydrogen production, in particular to a closed-type fuel cell hydrogen source system. Background technique [0002] Hydrogen has abundant reserves on the earth, high calorific value of combustion, and does not produce any pollution after combustion, so it is regarded as an ideal clean new energy in the 21st century. Converting hydrogen energy into electricity is the most important aspect of the application of hydrogen energy technology, and fuel cells using hydrogen as fuel are more in line with the development of the times. A fuel cell is a device that uses redox reactions to directly convert chemical energy in substances into electrical energy, and its energy conversion efficiency can reach 50-60%. Such high energy conversion efficiency of fuel cells, as well as the advantages of low temperature and fast start-up, low thermal radiation, low emissions, low operating noise, a...

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Problems solved by technology

[0014] The purpose of the present invention is to solve the above-mentioned deficiencies such as the low energy utilization rate of the hydrogen production system or the content of CO in the reformed product gas not meeting the requirements of the PEMFC fuel cell system, the poor integration of the hydrogen production system, and the low level of emission requirements. The application of the battery system is extensive. The present invention proposes a closed hydrogen production system for PEMFC fuel cells. The closed methanol steam reforming fuel cell hydrogen source system provided by the present invention can not only produce CO concentration lower than The 10ppm hydrogen-rich reformed gas realizes the closed operation of the hydrogen production system and the fuel cell; and through the effective use of the anode tail gas of the fuel cell, the energy utilization efficiency of the entire system is improved; through combustion, reforming, and CO selective oxidation modularization The design and heat transfer oil system further optimize the bed temperature distribution of reforming and selective oxidation reactions, and realize the efficient and compact reforming hydrogen production system

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