文献类型：期刊文献

中文题名：π型向心径向流吸附器变质量流动特性研究

英文题名：Study on variable mass flow laws in π-shaped centripetal radial flow adsorber

作者：王浩宇[1];刘应书[2];张传钊[1];杨雄[2];陈江伟[2]

第一作者：王浩宇

通讯作者：Wang, Haoyu

机构：[1]北京联合大学生物化学工程学院,北京100023;[2]北京科技大学能源与环境工程学院,北京100083

第一机构：北京联合大学生物化学工程学院

年份：2019

卷号：70

期号：9

起止页码：3385-3395

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20194407605033);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：北京市自然科学基金项目(8182019);北京市教育委员会科技计划一般项目(KM201711417014);国家自然科学基金项目(51578065)

语种：中文

中文关键词：径向流;吸附;π型向心;两相流;数值模拟

外文关键词：radial flow;adsorption;π-shaped centripetal;two phase flow;numerical simulation

摘要：对径向流吸附器内变压吸附(PSA)制氧的变质量流动规律进行研究,有助于准确掌握吸附过程及床层内的变量因素对制氧性能的影响。对π型向心径向流吸附器建立气固耦合的两相吸附模型,并对其PSA制氧过程进行了数值模拟研究,得到了床层内氧气浓度分布、温度分布以及产品气浓度的变化规律。结果表明:首次循环结束时床层内氧气最高摩尔分数可达66.02%,回收率29.2%。非稳定循环期间,氧气摩尔分数从66.02%升高至97.5%,回收率从29.2%提高至38.5%。循环达到稳定后,床层内氧气摩尔分数最高可达98.6%,回收率38.9%左右,且达到稳定状态后床层内气固两相温差减小,逐渐达到热平衡。获得了吸附器内部气体与吸附剂两相间的传质、传热过程,为π型向心径向流吸附器用于PSA制氧提供技术支持。
Studying the variable mass flow law of pressure swing adsorption(PSA)in the radial flow adsorber can help to accurately grasp the influence of the adsorption process and the variable factors in the bed on the oxygen production performance.An air-solid two-phase pressure swing adsorption model is established for theπ-shaped centripetal radial flow adsorber,axial oxygen purity profiles,temperature wave and oxygen concentration for product gas are comparatively studied by using this model.The results show that the oxygen purity of 66.02%and the recovery of the production of 29.2%can be obtained in the outlet after the first PSA cycle.The oxygen purity increases from 66.02%to 97.5%and the recovery of the production increases from 29.2%to 38.5%during the unsteady state.The product oxygen purity and recovery are achieved to be 98.6%and 38.9%at the end of each steps in steady state,and finally the temperature difference of air-solid two-phase gradually decreases and reaches thermal balance.The mass and heat transfer between the air and the adsorbent are obtained,which provides reference forπ-shaped centripetal in the PSA for oxygen production.