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一、32%烧碱来自一次盐水单元的一次精制盐水通过螯合树脂塔，进一步除去盐水中的Ca2+、Mg2+等金属阳离子，获得钙镁总量在20ppb以下的精制盐水。精制盐水通过电解槽阳极汇总管流入各单元槽。由电解槽阳极出来的淡盐水和氯气进入阳极液循环槽，淡盐水送至脱氯塔后去一次盐水单元除去硫酸根、化盐，湿氯气送往氯气处理及压缩单元。电解槽阴极出来的烧碱和氢气进入阴极液循环槽，烧碱经成品中间罐送往成品罐区出售。湿氢气送往氢气处理及压缩单元。Thebrine,fromprimarybrineunit,isfedintothechelatingresintowerforasecondarypurification.Onpassingthroughthetower,theCa2+，Mg2+andothermetalionsinthebrinewillberemovedfurther,thenthetotalconcentrationofCa2+andMg2+willbereducedtolessthan20ppb.Afterthatthemorepurifiedbrineflowsintotheelectrolyzerviatheanolyteinletmainfold.Thebrineoutoftheelectrolyzer，whichisoflowerconcentration，willbepipedintothevacuumdechlorinationplant，afterwardsthedepletedbrinewillbesentbacktothesaltdissolvingtankoftheprimarybrineunit.Beforedissolvingsalt，theconcentrationofSO42-willbereducedtoacertainlevel.Andthegeneratedwetchlorinegaswillbesenttothechlorinetreatmentandcompressionunit.Likewise,Thecausticsodaandwethydrogengas，outofthecathodeoutletoftheelectrolyzer，flowintothecathodeliquidcirculatingtank.The32%causticsodasolutionwillbepumpedtothetankareaforsaleafteranintermediatetank，andthegaswillbeprocessedinthehydrogentreatmentunit.二、31%盐酸来自氯气处理及压缩单元的干氯气和来自氢气处理及压缩单元的氢气，按一定的配比进入石墨合成炉燃烧，生成HCl气体，气体经过降膜吸收器用纯水吸收后生成高纯盐酸，一部分自用，其余送往成品罐区出售。Thetreatedchlorinegasandhydrogengas，beingpipedintothediadgraphitesyntheticfurnaceinproportion，getburnedinthefurnacetogenerategashydrogenchloride.Afterpassingthroughtwofallingfilmabsorbersinsuccession，HClgaswerechangedintohighpurityhydrochloricacidwithpurewaterabsorption,someofthemareforusownuse，therestarepipedtothetankareaforsale.电解槽electrolyzer碱高位槽Causticsodaelevatedtank阳极液循环槽Liquidcirculatingtank阴极液循环槽Liquidcirculatingtank脱氯塔Dechlorinat-iontower成品中间槽Intermediatetank去一次盐水brine成品罐区produt盐水自一次盐水单元brine过滤盐水槽Filtratedbrinetank螯合树脂塔Chelateresintower盐水高位槽Brineelevatedtank三、50%烧碱32%烧碱送入处于真空条件的第一效蒸发器-降膜蒸发器被蒸发到大约36％的浓度，然后通过在真空运行的第二效蒸发器溶液被浓缩到42%，最后通过在真空运行的第三效蒸发器浓缩至50%，即成品碱，换热后送往成品罐区出售。The32%causiticsodaissenttothefirsteffectevaporator，afallingfilmevaporatoroperatingundervacuum，andthenitisevaporatedtoapprox.36%.Duringasinglepassthroughthesecondeffectevaporator,thecausticsolutionisconcentratedtoapprox.42%.Inthefinalstep,42%causticsolutionisconcentratedto50%throughathirdeffectevaporatorinvacuum-run.Onpassingthroughtheheatexchangers，the50%solutioniscooleddownto45°C，andpumpedtothetankareaforsale.氢气自氢处理单元Hydrogengas氯气自液氯单元Chlorinegas原氯自氯处理单元Chlorinegas氢气缓冲罐H2relaytank废氯缓冲罐Tail-chlorinerelaytank氯气混合罐Cl2mixingdrum合成炉SyntheticfurnaceHCl分配台HCldistributingtable一级降膜吸收Fallingfilmabsorption二级降膜吸收Fallingfilmabsorption盐酸罐区Storetank盐酸罐区Tankarea下游用户users副产蒸汽steam32%烧碱32%causticsolution换热器加热Heatexchanger第一效蒸发器Evaporator第三效蒸发器Evaporator第二效蒸发器Evaporator换热器加热Heatexchanger36%烧碱36%causticsolution42%烧碱42%causticsolution50%烧碱50%causticsolution蒸汽steam蒸汽steam蒸汽steam表面冷凝器surfacecondenser