Optimized process configuration for CO2 recovery from crude synthesis gas via a rectisol wash process
Optimized process configuration for CO2 recovery from crude synthesis gas via a rectisol wash process
复制标题
通过精馏醇洗涤工艺从粗合成气中回收二氧化碳的优化工艺配置
DOI：
10.1016/j.ijggc.2018.10.005
复制
发表时间：
2018-12
影响因子：
3.9
通讯作者：
Liang Zhiwu
中科院分区：
文献类型：
--
作者：
Gao Hongxia;Zhou Liping;Luo Xiao;Liang Zhiwu
低温甲醇洗是一种经济有效的净化工艺，已广泛应用于酸性气体（如二氧化碳（CO2））的去除。在目前的工作中，一个典型的一级低温甲醇洗工艺的改进，以提高CO2的回收率和纯度的CO2气流从粗合成气。CO2从溶剂中的解吸是通过内部加热膨胀来完成的。通过敏感性分析，研究了操作参数对CO2气和酸性气体流的影响，以及改进后工艺的能耗。结果表明，在相同CO2纯度下，CO2回收率由原工艺的35%提高到92%，单位CO2总当量功由1014 kJ/kg CO2显著降低到388 kJ/kg CO2。结果还表明，改进后的工艺净化后合成气中CO2和H2S浓度变化不大，但酸性气流中H2S浓度有所提高。
Rectisol wash is an economical and effective purification process which has been widely applied in the removal of acid gases (e.g. carbon dioxide (CO2)). In the present work, improvements on a typical one-stage Rectisol wash process were developed in order to increase the CO2recovery rate and purity of the CO2gas stream from the crude synthesis gas. The desorption of the CO2from the solvent was accomplished by means of expansion with internal heat. Sensitivity analyses were performed to study the influence of operating parameters on the CO2gas and sour gas streams, and the energy consumption of the improved process. Comparisons between the improved and the original processes showed that the CO2recovery rate was greatly increased from 35% with the original process to 92% with the same CO2purity, and the total equivalent work per unit CO2significantly dropped from 1014 kJ/kg CO2to 388 kJ/kg CO2. The results also showed that the changes in CO2and H2S concentrations in the purified synthesis gas of the improved process were small and not significant, while the H2S concentration in the sour gas stream was improved.
登录
查看更多内容
影响因子：
11.1
作者：
Li Sun;Robin Smith
通讯作者：
Li Sun;Robin Smith
使用单乙醇胺捕集二氧化碳的新型热泵蒸馏分流工艺、传统分流工艺和传统基线工艺的热负荷和总当量功的比较研究
影响因子：
3.9
作者：
Raphael O. Idem;Kaiyun Fu;Teerawat Sema;Paitoon Tontiwachwuthikula,
通讯作者：
Paitoon Tontiwachwuthikula,
DOI：
10.1016/0009-2509(88)80096-4
发表时间：
1987-04
期刊：
--
影响因子：
--
作者：
R. T. Yang
通讯作者：
R. T. Yang
DOI：
--
发表时间：
2010
期刊：
Coal and Chemical Industry
影响因子：
--
作者：
Sinopec Ningbo
通讯作者：
Sinopec Ningbo
影响因子：
10.4
作者：
R. Pruschek;G. Oeljeklaus;V. Brand;G. Haupt;G. Zimmermann;J. Ribberink
通讯作者：
R. Pruschek;G. Oeljeklaus;V. Brand;G. Haupt;G. Zimmermann;J. Ribberink