硫酸工业SulphuricAcidIndustry第11期2022年11月No.11Nov.2022膜蒸馏技术在污酸处置领域的工程化应用高永钢，王鹏，苏成龙，史志伟，解保雷（北京中科瑞升资源环境技术有限公司，北京102402)摘要：平板真空多效膜蒸馏设备以其耐腐蚀、节能、安全等特点已经在多个行业的污酸处置中得到工程化应用。项目实施结果表明，平板真空多效膜蒸馏可以把硫酸浓缩至40%以上，把盐酸浓缩至共沸浓度，继续浓缩可提取19%左右的盐酸；根据初始浓度和浓缩倍数灵活设计多效系数，每t产水消耗0.23~0.49t蒸汽；与热泵联用的集成设备，每t产水能耗折合蒸汽量为0.15t。膜蒸馏过流部件全部采用聚丙烯和聚四氟乙烯材质，耐酸耐氧化。平板真空多效膜蒸馏为污酸处置提供了一个节能减排的新思路。关键词：污酸处置硫酸浓缩盐酸浓缩盐酸提取平板真空多效膜蒸馏中图分类号：TQ111.16；X703文献标志码：B文章编号：1002-1507(2022)11-0024-06EngineeringApplicationofMembraneDistillationinSpendAcidTreatmentGAOYonggang,WANGPeng,SUChenglong,SHIZhiwei,XIEBaolei(BeijingZhongkeRuishengResourcesandEnvironmentalTechnologyCo.Ltd.,Beijing,102402,China）Abstract:Plate-framemulti-effectvacuummembranedistillation(VMD)hasbeensuccessfullyemployedinengineeringprojectsofspendacidtreatmentfromseveralindustriesduetoitsadvantagesofacid-resistance,energy-saving,safetyandsoon.Projectimplementationresultsindicatethatplate-framemulti-effectVMDcanconcentratesulphuricacidfromlowconcentrationtohigherthan40%,concentratehydrochloricacidtoazeotropicconcentrationandrecoverhydrochloricacidwithabout19%ofconcentrationwhenfurtherconcentrating.Multi-effectcoefficientisflexiblydesignedaccordingtotheinitialconcentrationofspendacidsandconcentrationfactor,leadingtoenergyconsumptionbetween0.23and0.49tonequivalentsteampertonofproducedwaterand0.15tonforVMDintegratedwithheatpump.Polypropyleneandpolytetrafluoroethylenewithhighacid-andoxidation-resistanceareutilizedtomanufactureallflowpassagecomponentsofVMD.Plate-framemulti-effectVMDprovidesanewsolutionforspendacidtreatmentwithenergysavingandemissionreduction.Keywords:spendacidtreatment;sulphuricacidconcentration;hydrochloricacidconcentration;hydrochloricacid...
