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Design of the Hydrogen Production System from City Natural Gas for PEMFC

Author: LiYan
Tutor: LiFan
School: Huazhong University of Science and Technology
Course: Heating, Gas Supply , Ventilation and Air Conditioning Engineering
Keywords: City gas Fuel cell Partial Oxidation of Methane CO selective oxidation Catalyst Activity evaluation
CLC: TM911.4
Type: Master's thesis
Year: 2005
Downloads: 86
Quote: 0
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Abstract


Proton exchange membrane fuel cell (PEMFC) is currently one of the most promising fuel cell , the fuel is of high purity hydrogen . The city gas preparation PEMFC with hydrogen can not only expand the field of application of natural gas , and to meet the overall requirements of energy saving and environmental protection . According to domestic and foreign natural gas C1 Chemical indirect conversion of natural gas to synthesis gas , ammonia industry , as well as fuel cell fuel gas CO removal process , design a preparation for PEMFC hydrogen experiment process , including methane, hydrogen and CO selectivity the oxidized catalyst selection , preparation and hydrogen production system as a whole . 1) partial oxidation of methane to syngas (H 2 CO) experiments , the Ni / Al 2 O 3 < / sub > catalyst by impregnation the Ni load in Al 2 O 3 < / sub > carrier in a fixed bed catalyst activity evaluation , selected by selective CO , H the 2 selective , CH 4 conversion rate , synthesis gas generation rate and O 2 conversion rate of five indicators to evaluate . CuO / CeO 2 2) CO selective oxidation part of the experiment , the catalyst, CuO on CeO 2 airgel by the impregnation method , the catalyst activity evaluation in a fixed bed , and the selected rate of conversion of CO and CO 2 selectivity as an evaluation index , after the reaction gas resulting from the CO content lower than 10 ppm , to meet the requirements of the PEMFC with the purity of the hydrogen . 3 ) natural gas system PEMFC hydrogen system optimization is an iterative process of adjustment to make POM reaction with CO selective oxidation reactions can connect smoothly , there is no large fluctuations in air velocity, temperature , etc. , can be determined according to the actual reaction desulfurization device with water vapor conversion device additions to or not . Explore natural gas system PEMFC using hydrogen system design , integrated transformation method is currently the most talked about , catalyst, as a starting point to viable and economic operation , and provide a scientific basis for the optimization of natural gas, hydrogen experiment .

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CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Chemical power sources,batteries, fuel cells > Fuel cell
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