Hydrocarbon fuel reforming medium-temperature purification hydrogen production method and device and fuel cell energy supply system

A technology for hydrocarbon fuel and hydrogen production equipment, which is used in hydrocarbon fuel reforming medium-temperature purification and hydrogen production equipment, fuel cell energy supply system, and hydrocarbon fuel reforming medium-temperature purification and hydrogen production field, which can solve the problem and the energy supply system to generate electricity. Efficiency drop, etc.

Active Publication Date: 2021-12-24
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the current fuel cell integrated energy supply system uses conventional purification methods to obtain a total hydrogen yield of less than 70%, resulting in a significant drop in the power generation efficiency of the energy supply system

Method used

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  • Hydrocarbon fuel reforming medium-temperature purification hydrogen production method and device and fuel cell energy supply system
  • Hydrocarbon fuel reforming medium-temperature purification hydrogen production method and device and fuel cell energy supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0139] PEMFC integrated energy supply system using industrial coal gas as raw material

[0140] Raw gas pressure: 2.0MPaG, raw gas temperature 216°C, combined efficiency of power generation and heat supply 2kW

[0141] The raw material gas comes from the hydrogen-rich gas of a coal-water slurry gasifier in a factory. After water-gas shift, it enters the purification, desulfurization and decarbonization process from the industrial production measuring line under the operating conditions of 2.0MPaG pressure and 216℃ temperature.

[0142] The two-stage purification method of medium temperature pressure swing adsorption + medium temperature variable pressure swing adsorption is adopted to realize the supply of fuel hydrogen for PEMFC and realize the combined efficiency of 2kW power generation and heat supply.

[0143] The first stage of coarse desorption adopts medium temperature pressure swing adsorption 8-6-1 process, that is, 8 adsorption towers - 6 times of pressure equalizati...

Embodiment 2

[0145] Steam Reforming PEMFC Combined Heat and Power System with Civil Natural Gas as Raw Material

[0146] Raw gas pressure: 0.002MPaG, raw gas temperature 25°C, combined efficiency of power generation and heat supply 100kW

[0147] The raw material gas comes from civil natural gas. After pressurization and reforming waste heat preheating, it is reformed with steam to produce hydrogen-rich gas. After water-gas shift, it enters the purification process.

[0148] The two-stage purification method of medium temperature and pressure swing adsorption + medium temperature and pressure swing adsorption is adopted to realize the supply of fuel hydrogen for PEMFC and realize the combined efficiency of 100kW power generation and heat supply.

[0149] The first stage of coarse desorption adopts medium temperature (vacuum) pressure swing adsorption 6-3-1 process, that is, 6 adsorption towers - 3 times of pressure equalization - 1 adsorption, coupled with a vacuum process, filled with hyd...

Embodiment 3

[0151] Hydrogen-doped natural gas steam reforming PEMFC combined heat and power system

[0152] Raw gas pressure: 0.002MPaG, raw gas temperature 25°C, combined efficiency of power generation and heat supply 30kW

[0153] The two-stage purification method of medium temperature pressure swing adsorption + medium temperature pressure swing adsorption is adopted to supply fuel hydrogen to PEMFC and achieve a combined efficiency of 30kW power generation and heat supply.

[0154] The raw material gas comes from hydrogen-doped natural gas. After pressurization and reforming waste heat preheating, it is reformed with steam to produce hydrogen-rich gas. After water-gas shift, it enters the purification process.

[0155] The first stage of rough removal adopts medium temperature pressure swing adsorption 7-4-1 process, that is, 7 adsorption towers-4 times of equal pressure-1 adsorption, coupled with parallel discharge, low-pressure steam flushing, nitrogen cleaning and vacuuming process...

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Abstract

The invention discloses a hydrocarbon fuel reforming medium-temperature purification hydrogen production method, hydrocarbon fuel reforming medium-temperature purification hydrogen production equipment and a fuel cell energy supply system.The hydrocarbon fuel reforming medium-temperature purification hydrogen production method comprises the following steps: when impurities in hydrogen-rich gas generated through reforming are removed, at the target medium-temperature adsorption temperature for coarse removal, carrying out coarse removal on hydrogen-rich gas through a first-stage medium-temperature pressure swing adsorption process or a first-stage medium-temperature pressure swing adsorption process to realize removal of most of CO2 and H2S and most of CO, N2 and CH4 impurities in hydrogen so as to obtain a first-stage product hydrogen; adjusting the temperature of the first-stage product hydrogen to a target adsorption temperature for fine removal; carrying out fine removal on the first-stage product hydrogen through a second-stage medium-temperature pressure swing adsorption process, a second-stage normal-temperature pressure swing adsorption process, a second-stage normal-temperature pressure swing adsorption process or a second-stage medium-temperature pressure swing adsorption process so as to realize deep directional removal of CO2 and CO in the first-stage product hydrogen; and obtaining fuel hydrogen with double high hydrogen yield and purity index.

Description

technical field [0001] The present invention relates to the technical field of hydrogen energy and fuel cells, more specifically, to a method for hydrogen production by reforming hydrocarbon fuels at medium temperature and purification, and the invention also relates to equipment for hydrogen production by reforming hydrocarbon fuels at medium temperature and purification and a fuel battery powered system. Background technique [0002] Hydrogen is a clean and environmentally friendly energy carrier. A fuel cell is a clean and efficient energy conversion device that can directly convert the chemical energy stored in fuel and oxidant into electrical energy through redox reactions. It is currently the most popular and commercially available It is a proton exchange membrane fuel cell (PEMFC for short). The power generation and energy supply technology based on PEMFC can realize the coordinated development of energy and transportation, construction and home appliance industries. ...

Claims

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Application Information

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IPC IPC(8): C01B3/56H01M8/0612H01M8/0662C01B3/48C01B3/38
CPCC01B3/508H01M8/0618H01M8/0675H01M8/0687C01B3/48C01B3/38C01B2203/043C01B2203/0475C01B2203/047C01B2203/048C01B2203/066C01B2203/0233C01B2203/0283C01B2203/1241C01B2203/1247C01B2203/1264Y02E60/50
Inventor 史翊翔李爽吴磊蔡宁生
Owner TSINGHUA UNIV
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