Hydrogen production by catalytic processing of renewable methane-rich gases
Hydrogen production by catalytic processing of renewable methane-rich gases
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DOI：
10.1016/j.ijhydene.2008.02.026
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发表时间：
2008-04
影响因子：
7.2
通讯作者：
N. Muradov;F. Smith;A. T-Raissi
中科院分区：
文献类型：
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作者：
N. Muradov;F. Smith;A. T-Raissi
生物质衍生的富含甲烷的气体，如垃圾填埋气（LFG），沼气和沼气是有前途的可再生资源，用于不久的将来生产氢气。本文对垃圾填埋气等富甲烷气体催化重整制氢的技术经济可行性进行了评价。对富甲烷CH 4-CO2混合物在Ni基催化剂上重整反应进行了热力学平衡计算和实验测定。探讨了由于积碳导致的催化剂失活以及蒸汽和氧气对工艺可持续性的影响。两种技术方法的区别在于向吸热过程输入热量的方式（即，外部与自热）使用AspenPlusTM化学过程模拟器进行建模，并进行实验验证。研制了一套5 kW模拟液化气的甲烷-二氧化碳混合气体制氢中试装置。初步技术经济评估表明，液态氢生产成本在每公斤3美元至7美元之间，这取决于工厂的能力、工艺热输入选择以及工艺中是否包括碳螯合。
Biomass-derived methane-rich gases such as landfill gas (LFG), biogas and digester gas are promising renewable resources for near-future production of hydrogen. The technical and economical feasibility of hydrogen production via catalytic reforming of LFG and other methane-rich gases is evaluated in this paper. The thermodynamic equilibrium calculations and experimental measurements of reformation of methane-rich CH4–CO2mixtures over Ni-based catalyst were conducted. The problems associated with the catalyst deactivation due to carbon lay down and effects of steam and oxygen on the process sustainability were explored. Two technological approaches distinguished by the mode of heat input to the endothermic process (i.e., external vs autothermal) were modeled using AspenPlusTMchemical process simulator and validated experimentally. A 5kWthpilot unit for hydrogen production from LFG-mimicking CH4–CO2mixture was fabricated and operated. A preliminary techno-economic assessment indicates that the liquid hydrogen production costs are in the range of $3.00–$7.00 per kilogram depending upon the plant capacity, the process heat input option and whether or not carbon sequestration is included in the process.