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摘要: 利用固定床反应器对吸收增强式甲烷水蒸气重整制氢反应进行了考察，研究了温度、甲烷流量、颗粒粒径和吸收剂种类等参数对反应过程的影响。结果表明，吸收增强式制氢反应过程最佳反应温度受热力学和动力学两方面因素影响；常压下以CaO为吸收剂时，最佳反应温度为600℃~700℃；CH4流量的选取要根据反应器内吸收剂的量与吸收增强段持续时间综合比较而定； 颗粒粒径大于90 μm，分析纯CaO和新型钙基CO2吸收剂CaO/Ca12Al14O33 均能达到较好的吸收增强效果。
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关键词:
- 吸收增强式甲烷水蒸气重整 /
- 制氢 /
- CO2吸收剂
Abstract: The experiment of hydrogen production from sorption enhanced steam methane reforming (SE-SMR) were done in a laboratoryscale fixedbed reactor system, and the effects of temperature, CH4 flow rate, particle size and different sorbents on the reaction processes of SE-SMR were investigated. The results indicate that the optimal reaction temperature for SE -SMR was affected by the reaction thermodynamic and kinetics. With CaO as sorbent, the optimal reaction temperature is in the range of 600 ℃～700 ℃ at atmosphere pressure. The flow rate of CH4 should be determined based on the sorbent amount in reactor and the required time for sorption enhanced period. The particle size should be larger than 90 μm and pure CaO and new Cabased CO2 sorbentCaO/Ca12Al14O33 both achieve good sorption enhanced effects. -
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