Izizathu zokungasebenzi kwe-molecular sieve ohlelweni lokuhlanza lweyunithi yokuhlukanisa umoya

1, umthelela wokuqukethwe kwamanzi amaningi kumsebenzi wesisefo samangqamuzana
Umsebenzi oyinhloko wesihlanzi seyunithi yokuhlukanisa umoya ukukhipha umswakama kanye ne-hydrocarbon okuqukethwe emoyeni ukuze kuhlinzekwe umoya owomile kumasistimu alandelayo. Isakhiwo semishini sisesimweni sombhede ovundlile ovundlile, ukuphakama kokugcwalisa kwe-alumina okuphansi okucushiwe kungu-590 mm, ukuphakama kwe-molecular sieve ye-13X ephezulu kungu-962 mm, futhi izihlanzi ezimbili ziyashintshwa phakathi komunye nomunye. Phakathi kwazo, i-alumina ecushiwe ikakhulukazi ikhanga amanzi emoyeni, futhi isisefo samangqamuzana sisebenzisa isimiso saso sokukhangisa samangqamuzana ukukhangisa ama-hydrocarbon. Ngokusekelwe ekwakhekeni kwezinto ezibonakalayo kanye nezakhiwo zokukhangisa zesisefo samangqamuzana, i-adsorption order ithi: H2O> H2S> NH3> SO2 > CO2(ukuhleleka kokukhangisa kwamagesi ane-alkali). H2O> C3H6> C2H2> C2H4, CO2, C3H8> C2H6> CH4(i-oda lokufakwa kwama-hydrocarbons). Kungabonakala ukuthi inokusebenza kwe-adsorption okuqine kakhulu kwama-molecule amanzi. Kodwa-ke, okuqukethwe kwamanzi esisefo samangqamuzana kuphezulu kakhulu, futhi amanzi amahhala azokwakha icrystallization yamanzi ngesisefo samangqamuzana. Izinga lokushisa (220 °C) elinikezwe isitimu esingu-2.5MPa esisetshenziselwa ukuvuselela izinga lokushisa eliphezulu namanje alikwazi ukususa le ngxenye yamanzi ayikristalu, futhi ubukhulu bembotshana yesisefo samangqamuzana buyi-crystal yamanzi ama-molecule, ngakho ayikwazi ukuqhubeka nokukhangisa ama-hydrocarbon. Ngenxa yalokho, isisefo se-molecular sivaliwe, impilo yesevisi iyafinyezwa, futhi ama-molecule amanzi angena emshinini wokushisisa we-low-pressure plate wesistimu yokulungiswa kabusha, okwenza umzila wokugeleza wesishintshi sokushisa umise futhi uvimbe, okuthinta umzila wokugeleza komoya kanye nomphumela wokudlulisa ukushisa kwesishintshi sokushisa, futhi ezimweni ezimbi kakhulu, idivayisi ayikwazi ukusebenza ngokujwayelekile.
2. Umthelela we-H2S ne-SO2 kumsebenzi we-molecular sieve
Ngenxa yokukhangisa okukhethiwe kwesisefo samangqamuzana, ngaphezu kokukhangiswa kwawo okuphezulu kwama-molecule amanzi, ukuhlobana kwawo kwe-H2S ne-SO2 nakho kungcono kunokusebenza kwayo kwe-adsorption ye-CO2. I-H2S ne-SO2 ithatha indawo esebenzayo yesisefo samangqamuzana, futhi izingxenye ze-acidic zisabela ngesisefo se-molecular, okuzokwenza ukuthi isihlungo se-molecular sibe nobuthi futhi senziwa kungasebenzi, futhi amandla okukhangisa we-molecular sieve azokwehla. Impilo yesevisi ye-sieve ye-molecular ifinyeziwe.
Kafushane, umswakama owedlulele, okuqukethwe kwegesi kwe-H2S kanye ne-SO2 emoyeni ophumayo wombhoshongo wokupholisa umoya wokuhlukanisa umoya kuyisizathu esiyinhloko sokungasebenzi kwesisefo samangqamuzana kanye nokufinyezwa kwempilo yesevisi. Ngokulawulwa okuqinile kwezinkomba zenqubo, ukwengezwa kokuhlaziya umswakama kwe-purifier outlet, ukukhetha okufanele kwezinhlobo zokubulala isikhunta, umthamo ofika ngesikhathi wesikhunta, umbhoshongo wokupholisa amanzi ukuze ungeze amanzi aluhlaza, ukuhlaziya okujwayelekile kwesampula kokuvuza kokushisisa ukushisa nezinye izinyathelo, ukusebenza okuphephile nokuzinzile kwesihlanzi kungadlala ukutholwa ngesikhathi, isixwayiso esifike ngesikhathi, ukuqinisekisa ukusetshenzwa kwemvukuzane ngesikhathi.