简介:TheapplicationofXzeoliteintheareasforproducingpara-xylenebyadsorptiveseparation,N2/O2separation,etc.,wasreviewed,andtheframeworkSiO2/Al2O3molarratio,thecationsandthewatercontentofXzeolitesignificantlyaffecteditsselectivityandcapacity.Astheactivecomponentofpara-xyleneadsorbent,theXzeolitewithaframeworkSiO2/Al2O3molarratioof2.2-2.4coupledwithcationsofBa^2+andK^+,aswellasawatercontentof4.0%-5.0%exhibitedhigherpara-xyleneselectivity.ForN2/O2separation,higherN2capacityandN2/O2separationfactorwereachievedwhentheXzeolitehadaframeworkSiO2/Al2O3molarratioof2.0coupledwithLi^+cations.TheintroductionofanothercationinXzeolitecouldfurtherincreasetheN2/O2separationfactor,whiletheadsorptionofwater,however,couldleadtoaremarkabledecreaseofN2capacity.Besides,theXzeolitecouldbeusedinadsorptiveseparationofhighlypureHeandselectiveadsorptionofCO2,CO,CH4,N2,Ar,andH2.
简介:为量化评估FPSO油气泄漏、燃爆连锁风险,采用因果图法分析风险致因因素的关联性和人员伤亡事故模式及风险路径,结合贝叶斯网络模型计算FPSO油气泄漏、燃爆事故频率,从安全屏障角度提出风险控制策略并进行安全屏障失效分析。结果表明:因果图可分析FPSO泄漏油气燃爆风险演化过程及事故发生路径;FPSO发生小型、中型和重大油气燃爆事故频率分别为0.07479,0.08374,和0.003594a/船,油气泄漏、燃爆连锁风险高;基于控制措施的安全屏障模型是降低风险的保障;屏障失效形式包括活动失效和潜伏失效,其通过事故树中的或门与对应顶上事件相连接,失效形式越多,危害越大。
简介:本发明已经发现一种用于双酚A的高生产率催化剂,它包括在引入砜交联的条件下由聚苯乙烯/二乙烯基苯(PS、DVB)共聚物制成的强酸性阳离子交换树脂球。