工程科学学报，第38卷，第7期：9931001,2016年7月 Chinese Journal of Engineering,Vol.38,No.7:993-1001,July 2016 DOI:10.13374/j.issn2095-9389.2016.07.015:http://journals.ustb.edu.cn 吸附及解吸压力对快速变压吸附床内速度及循环性 能的影响 祝显强2》，刘应书)，杨雄)区，刘文海”，李永玲” 1)北京科技大学能源与环境工程学院，北京1000832)江苏吴泰气体设备科技有限公司，丹阳212300 3)北京科技大学治金工业节能减排北京市重点实验室，北京100083 ☒通信作者，E-mail:kindy-yang@163.com 摘要快速（真空）变压吸附循环周期较短，床层压力周期性变化快，使吸附床内流动及传热传质特性变化较大，本文研究 吸附及解吸压力对快速变压吸附制氧床内速度及循环性能的影响.快速变压吸附(rapid pressure swing adsorption,RPSA)循 环中原料气充压阶段气流速度远大于顺流的气体流速极限值，快速真空变压吸附(rapid vacuum pressure swing adsorption, RVPSA)循环中原料气充压阶段气流速度略大于顺流的气体流速极限值，而RPSA循环和RVPSA循环中放空降压阶段气流 速度均较大.在所研究的吸附和解吸压力范围内，PSA循环和RVPSA循环中气体温度在循环周期内变化均约为10℃，而 RVPSA循环中气体温度在循环周期内温度梯度更大.RPSA循环中吸附压力越高，氧气回收率越高，床层因子越小：而RVP- SA循环中解吸压力越低，氧气回收率越高，床层因子越小 关键词制氧：变压吸附：压力：循环性能：数值模拟 分类号TQ028.1 Effect of adsorption and desorption pressure on the velocity and cycling performance of rapid pressure swing adsorption ZHU Xian-qiang),LIU Ying-shu,YANG Xiong,LIU Wen-hai,LI Yong-ling) 1)School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)Jiangsu Oxtek Air Equipment Technology Co.Ld.,Danyang 212300,China 3)Beijing Key Laboratory for Energy Saving and Emission Reduction of Metallurgical Industry,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:kindy_yang@163.com ABSTRACT Rapid (vacuum)pressure swing adsorption (RPSA or RVPSA)is featured by short cycle time and quick pressure change,which may lead to great variations of flow and mass and heat transfer in the adsorber.The effects of adsorption and desorption pressure on the velocity and cycling performance in an oxygen-production RPSA bed were investigated in this paper.The results show that during the feed pressurization(PR)step in the RPSA process,the up-flow velocity is far larger than the limit value,and slightly larger than it for the rapid vacuum pressure swing adsorption (RVPSA)process.During the blow-down step in both RPSA and RVP- SA,the down-flow velocity is greater than the limit value.In comparison to RPSA,RVPSA exhibits a similar gas temperature change around 10C but a larger gas temperature gradient.The bed size factor can be effectively reduced with increased oxygen recovery by increasing the adsorption pressure for RPSA,while by lowering the desorption pressure for RVPSA. KEY WORDS oxygen generation:pressure swing adsorption;pressure;cycling performance;numerical simulation 收稿日期：201601-11 基金项目：国家自然科学基金资助项目(51306017)：应急救生呼吸装备关键技术及产业化资助项目(Z141100000714007)工程科学学报，第 38 卷，第 7 期: 993--1001，2016 年 7 月 Chinese Journal of Engineering，Vol． 38，No． 7: 993--1001，July 2016 DOI: 10． 13374 /j． issn2095--9389． 2016． 07． 015; http: / /journals． ustb． edu． cn 吸附及解吸压力对快速变压吸附床内速度及循环性 能的影响 祝显强1，2) ，刘应书1，3) ，杨 雄1) ，刘文海1) ，李永玲1) 1) 北京科技大学能源与环境工程学院，北京 100083 2) 江苏昊泰气体设备科技有限公司，丹阳 212300 3) 北京科技大学冶金工业节能减排北京市重点实验室，北京 100083  通信作者，E-mail: kindy_yang@ 163． com 收稿日期: 2016--01--11 基金项目: 国家自然科学基金资助项目( 51306017) ; 应急救生呼吸装备关键技术及产业化资助项目( Z141100000714007) 摘 要 快速( 真空) 变压吸附循环周期较短，床层压力周期性变化快，使吸附床内流动及传热传质特性变化较大，本文研究 吸附及解吸压力对快速变压吸附制氧床内速度及循环性能的影响． 快速变压吸附( rapid pressure swing adsorption，ＲPSA) 循 环中原料气充压阶段气流速度远大于顺流的气体流速极限值，快速真空变压吸附( rapid vacuum pressure swing adsorption， ＲVPSA) 循环中原料气充压阶段气流速度略大于顺流的气体流速极限值，而 ＲPSA 循环和 ＲVPSA 循环中放空降压阶段气流 速度均较大． 在所研究的吸附和解吸压力范围内，ＲPSA 循环和 ＲVPSA 循环中气体温度在循环周期内变化均约为 10 ℃，而 ＲVPSA 循环中气体温度在循环周期内温度梯度更大． ＲPSA 循环中吸附压力越高，氧气回收率越高，床层因子越小; 而 ＲVP￾SA 循环中解吸压力越低，氧气回收率越高，床层因子越小． 关键词 制氧; 变压吸附; 压力; 循环性能; 数值模拟 分类号 TQ028. 1 Effect of adsorption and desorption pressure on the velocity and cycling performance of rapid pressure swing adsorption ZHU Xian-qiang1，2) ，LIU Ying-shu1，3) ，YANG Xiong1)  ，LIU Wen-hai1) ，LI Yong-ling1) 1) School of Energy and Environmental Engineering，University of Science and Technology Beijing，Beijing 100083，China 2) Jiangsu Oxtek Air Equipment ＆ Technology Co． Ltd． ，Danyang 212300，China 3) Beijing Key Laboratory for Energy Saving and Emission Ｒeduction of Metallurgical Industry，University of Science and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: kindy_yang@ 163． com ABSTＲACT Ｒapid ( vacuum) pressure swing adsorption ( ＲPSA or ＲVPSA) is featured by short cycle time and quick pressure change，which may lead to great variations of flow and mass and heat transfer in the adsorber． The effects of adsorption and desorption pressure on the velocity and cycling performance in an oxygen-production ＲPSA bed were investigated in this paper． The results show that during the feed pressurization ( PＲ) step in the ＲPSA process，the up-flow velocity is far larger than the limit value，and slightly larger than it for the rapid vacuum pressure swing adsorption ( ＲVPSA) process． During the blow-down step in both ＲPSA and ＲVP￾SA，the down-flow velocity is greater than the limit value． In comparison to ＲPSA，ＲVPSA exhibits a similar gas temperature change around 10 ℃ but a larger gas temperature gradient． The bed size factor can be effectively reduced with increased oxygen recovery by increasing the adsorption pressure for ＲPSA，while by lowering the desorption pressure for ＲVPSA． KEY WOＲDS oxygen generation; pressure swing adsorption; pressure; cycling performance; numerical simulation