期刊文献+

不同均压方式对PSA和VSA空分制氧过程的影响 被引量:5

Effects of different pressure equalization methods on PSA and VSA processes for O_2 production from air
下载PDF
导出
摘要 对存在于变压吸附(PSA)和真空变压吸附(VSA)空分制氧过程中的均压步骤进行研究,应用ASPENADSIM软件,模拟并比较4种不同均压方式(塔顶向塔顶均压(T-T),塔底向塔底均压(B-B),塔顶和塔底双向均压(TB),塔顶向塔底均压(T-B))对过程的影响,分析均压步骤的物流浓度、流量以及均压结束时床层轴向浓度分布。结果表明:采用T-B均压方式的PSA和VSA过程得到的产品O_2纯度和收率最高。在均压步骤,均降床层塔顶出气有利于死空间中O_2的回收,且减少床层吸附相中N_2的脱附带出,从而得到较高的产品O_2收率;均升床层塔底进气可使床层N_2的质量摩尔浓度前沿陡峭,塔顶洁净,因此得到较高的产品O_2纯度。 The pressure equalization step in O2 production from air of pressure swing adsorption (I-'5A) and vacuum swing adsorption (VSA) processes was studied. Influences of four different pressure equaliza- tion modes (the two beds connected by top to top (T-T), bottom to bottom (B-B), top and bottom both sides(TB) ,top to bottom(T-B) ) on 02 production from air were simulated by ASPEN-ADSIM. Accord- ingly, the O2 concentration and flowrate of the stream in the pressure equalization step and the bed con- centration profiles at the end of pressure equalization step were investigated. Results showed that PSA and VSA processes adopting, the pressure equalization mode of T-B had the highest O2 purity and O2 recovery. During pressure equalization step, opening the outlet end of bed 1 ( experiencing the step of de- pressurizing pressure equalization) to discharge gas benefit the increasing of O2 recovery of product, but opening the inlet end of bed 2 ( experiencing the step of pressurizing pressure equalization) to let gas in from bed 1 had the benefit to increasing O2 purity of product.
出处 《南京工业大学学报(自然科学版)》 CAS 北大核心 2012年第4期79-83,共5页 Journal of Nanjing Tech University(Natural Science Edition)
基金 长江学者和创新团队发展计划资助项目(IRT0732) 江苏省高校自然科学重大基础研究资助项目(08KJA530001)
关键词 PSA VSA 制氧 模拟 均压方式 ASPEN—ADSIM PSA VSA o2 product simulation pressure equalization ASPEN-ADSIM
  • 相关文献

参考文献11

  • 1Kenneth G,Teague J,Edgar T F.Predictive dynamic model of a small pressure swing adsorption air separation unit [J].Ind Eng Chem Res,1999,38(10):3761-3775. 被引量:1
  • 2Jiang L,Biegler L T.Simulation and optimization of pressure swing adsorption systems for air separation [J].AIChE,2003,49(5):1140-1157. 被引量:1
  • 3Ruthven D M,Farooq S,Knaebel K S.Pressure swing adsorption [M].New York:VCH Publishers,1994:226-230. 被引量:1
  • 4Rege S U,Yang R T.Limits for air separation by adsorption with LiX zeolite [J].Ind Eng Chem Res,1997,36(12):5358-5365. 被引量:1
  • 5Budner Z,Dula J,Podstawa W,et al.Study and modeling of the vacuum swing adsorption(VSA)process employed in the production of oxygen [J].Chem Eng Res Design,1999,77(5):405-412. 被引量:1
  • 6Beh C C K,Webley P A.The dynamic response and characteristics of an oxygen vacuum swing adsorption process to step perturbations [J].Adsorp Sci Technol,2003,21(4):319-347. 被引量:1
  • 7Ruthven D M.Principles of adsorption and adsorption processes[M].New York:John Wiley & Sons,1984:361-374. 被引量:1
  • 8Berlin N H.Method for providing an oxygen-enriched environment:US,3280536 [P].1966-10-25. 被引量:1
  • 9Warmuzinski K.Effect of pressure equalization on power requirements in PSA systems [J].Chem Eng Sci,2002,57(8):1475-1478. 被引量:1
  • 10Cruz P,Magalhaes F D,Mendes A.On the optimization of cyclic adsorption separation processes[J].AIChE,2005,51(5):1377-1395. 被引量:1

同被引文献32

引证文献5

二级引证文献23

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部