| 生物质超临界气化制氢产物高压吸收法分离的气液相平衡分析 |
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| 引用本文： | 吕友军,郭烈锦.生物质超临界气化制氢产物高压吸收法分离的气液相平衡分析[J].化工学报,2006,57(6):1267-1273. |
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| 作者姓名： | 吕友军 郭烈锦 |
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| 作者单位： | 西安交通大学动力工程多相流国家重点实验室，陕西 西安 710049 |
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| 基金项目： | 科技部科研项目
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中国科学院资助项目 |
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| 摘 要： | 通过高压吸收法可以将生物质超临界水气化制氢的气体产物中的CO2与H2分离.基于修正的UNIFAC模型、SRK状态方程以及MHV2混合规则，建立了生物质超临界气化制氢产物高压吸收法分离的气液相平衡的计算模型，讨论了CO2与H2分离过程中压力和温度等参数对分离效果的影响.计算结果表明：随着分离器中压力的升高，气相产物中H2的摩尔分数增加，CO2摩尔分数迅速下降，气相中H2的收率不断降低；随着温度升高，气相产物中H2的摩尔分数减小，CO2摩尔分数上升，气相中H2的收率增加；然而，高压吸收的方法不能将气体产物中的CO、CH4、C2H4、C2H6与H2分离.
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| 关 键 词： | 生物质 超临界水 制氢 气液相平衡 |
| 文章编号： | 0438-1157（2006）06-1267-07 |
| 收稿时间： | 05 12 2005 12:00AM |
| 修稿时间： | 2005-05-122005-07-20 |
Gas-liquid equilibrium analysis of hydrogen separation from product gas of biomass gasification in supercritical water |
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| L Youjun,GUO Liejin.Gas-liquid equilibrium analysis of hydrogen separation from product gas of biomass gasification in supercritical water[J].Journal of Chemical Industry and Engineering(China),2006,57(6):1267-1273. |
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| Authors: | L Youjun GUO Liejin |
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| Affiliation: | L(U) Youjun,GUO Liejin |
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| Abstract: | High pressure water can be used to separate CO2 from H2 after the process of hydrogen production by biomass gasification in supercritical water. Based on the modified UNIFAC, SRK equation of state and the MHV2 mixing rule, a gas-liquid equilibrium model of high pressure water absorption of biomass gasification product gas was proposed. The influence of the main parameters, such as temperature and pressure, on the separation process was investigated. The predicted results showed that with increasing pressure the molar fraction of H2 increased but H2 yield decreased in the gas phase. The molar fraction of CO2 decreased sharply with increasing pressure. With increasing temperature, the molar fraction of H2 in gas phase decreased and the molar fraction of CO2 increased. H2 yield in the gas phase increased with the increasing temperature. But CO, CH4, C2 H4 and C2 H6 could not be separated from H2 from gas phase products by high pressure water absorption. |
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| Keywords: | biomass supercritical water hydrogen production gas-liquid equilibrium |
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