Enclosed fuel cell hydrogen source system

Abstract

The invention provides an enclosed fuel cell hydrogen source system, which comprises a methanol supply device, a liquid oxygen device, a carbon dioxide storage device, a water storage device, a heat-conducting oil storage system and a methanol hydrogen production device system, wherein the methanol hydrogen production device comprises a hydrogen production combustion evaporator, a reformer, a combustor, a carbon monoxide selectivity oxidation reactor and other auxiliary systems; the combustor, the reformer, the evaporator and the CO selectivity oxidation reactor are integrally modularized; the methanol supply device and the liquid oxygen device communicates with an inlet of the methanol hydrogen production device; the heat-conducting oil storage system communicates with the inlet and an outlet of the methanol hydrogen production device; and the carbon dioxide storage device and the liquid water storage device communicate with the inlet and the outlet of the methanol hydrogen production device respectively. The enclosed fuel cell hydrogen source system has the advantages that enclosed operation of the whole system is achieved; consumption of methanol fuel is reduced; energy utilization of the whole system is further improved; and the structure of a reforming hydrogen production system is compact.

Description

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

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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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