文献类型：期刊文献

中文题名：NH_3和CO_2的选择性分离I.间歇吸收机理及影响因素

英文题名：Selective Separation of NH_3-CO_2 I. Mechanism and Influence Factor of Intermittent Absorption

作者：蔡平雄[1];张成芳[1];郑志胜[1];钦淑均[1]

机构：[1]华东理工大学化工工艺研究所,上海200237

年份：2001

卷号：27

期号：1

起止页码：24

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：选择性吸收;气体速率;氨气;二氧化碳;选择性分离;间歇吸收机理;气膜控制;一级快反应

外文关键词：NH 3/CO 2 mixture gas; selective absorption; gas velocity; concentration of NH 3

摘要：通过对摩尔比接近于 2∶ 1的 NH3/CO2 混合气体进行选择性吸收研究 ,得到了良好的选择性分离效果 ,选择性分离因子 S1在 2 .0 6～ 7.2 3之间 ,S2 在 2 .86～ 1 0 .63之间 ;考察了气体速率和溶液中 NH3浓度对选择性吸收的影响 ,得到了高气速 ,短接触的结论 ;论证了选择性吸收的机理模型 :NH3的吸收属于气膜控制 ,CO2 的吸收可看作假一级快反应。
Selective absorption has been studied to separate the mixture gas of NH 3/CO 2=2 (mol ratio), the satisfactory selectivity was obtained. The selectivity factor of S 1 is between 2.06～7.23, the ratio of S 2 is between 2.86～10.83. The influence of concentration of NH 3 and gas velocity on selectivity have also been studied. It can be concluded that the high gas velocity and short contact is benefit to selective absorption of NH 3. At last, a mechanism model of selective absorption was demonstrated: the absorption of ammonia is controlled by gas film and the absorption of carbon dioxide is looked as a fast pseudo first order reaction.