Kwayoyin sieveskayan aiki ne masu mahimmanci da ake amfani da su a cikin matakai daban-daban na masana'antu don raba kwayoyin halitta dangane da girmansu da siffarsu. Su ne aluminosilicates na ƙarfe na crystalline tare da haɗin haɗin kai mai girma uku na alumina da silica tetrahedra. Mafi yawan amfanikwayoyin sievessu ne 3A da 4A, waɗanda suka bambanta a cikin girman pore da aikace-aikace.
4A kwayoyin sieves suna da girman pore na kusan 4 angstroms, yayin da3A Sives na kwayoyinsuna da ƙarami girman pore na kusan 3 angstroms. Bambanci a cikin girman pore yana haifar da bambance-bambance a cikin damar tallan su da zaɓi don ƙwayoyin cuta daban-daban.4A kwayoyin sievesyawanci ana amfani da su don bushewar iskar gas da ruwa, da kuma kawar da ruwa daga kaushi da iskar gas. A gefe guda kuma, ana amfani da sieves na kwayoyin 3A da farko don bushewar hydrocarbons marasa ƙarfi da mahaɗan igiya.
Bambancin girman pore shima yana shafar nau'ikan kwayoyin halitta waɗanda kowane nau'in sieve na ƙwayoyin cuta za'a iya tallata su. 4A kwayoyin sieves suna da tasiri wajen tallata manyan kwayoyin halitta irin su ruwa, carbon dioxide, da hydrocarbons unsaturated, yayin da 3A kwayoyin sieves sun fi zabi zuwa kananan kwayoyin kamar ruwa, ammonia, da alcohols. Wannan zaɓin yana da mahimmanci a aikace-aikace inda takamaiman ƙazanta ke buƙatar cirewa daga cakuda iskar gas ko ruwa.
Wani muhimmin al'amari da za a yi la'akari lokacin zabar tsakanin3A da 4A sivesshine iyawarsu ta jure matakan zafi daban-daban. 3A kwayoyin sieves suna da mafi girma juriya ga tururin ruwa idan aka kwatanta da 4A na'ura mai kwakwalwa, yana sa su dace da aikace-aikace inda kasancewar danshi ya damu. Wannan ya sa 3A sieves na kwayoyin halitta ya dace don amfani a cikin iska da bushewar iskar gas inda kawar da ruwa ke da mahimmanci.
Dangane da aikace-aikacen masana'antu, ana amfani da sieves na kwayoyin 4A a cikin samar da iskar oxygen da nitrogen daga hanyoyin rabuwar iska, da kuma bushewar refrigerants da iskar gas. Ƙarfinsu don cire ruwa da carbon dioxide yadda ya kamata ya sa su zama masu daraja a cikin waɗannan matakai. A gefe guda kuma, 3A sives na ƙwayoyin cuta suna samun amfani mai yawa wajen bushewar iskar gas ɗin da ba ta da ƙarfi, kamar fashewar iskar gas, propylene, da butadiene, da kuma wajen tsarkake iskar gas mai ruwa.
Yana da mahimmanci a lura cewa zaɓin tsakanin 3A da 4A sieves na ƙwayoyin cuta ya dogara da ƙayyadaddun buƙatun aikace-aikacen, gami da nau'in ƙwayoyin da za a tallata, matakin zafi da ake buƙata, da tsarkakakken da ake so na ƙarshen samfurin. Fahimtar bambance-bambancen da ke tsakanin waɗannan sieves na ƙwayoyin cuta yana da mahimmanci don zaɓar zaɓi mafi dacewa don takamaiman tsarin masana'antu.
A ƙarshe, yayin da duka biyu3A da 4A sivessuna da mahimmanci ga tsarin bushewa daban-daban da hanyoyin tsarkakewa, bambance-bambancen su a cikin girman pore, zaɓin adsorption, da juriya ga zafi ya sa su dace da aikace-aikace daban-daban. Ta hanyar fahimtar waɗannan bambance-bambance, masana'antu za su iya yanke shawarar da aka sani game da zaɓi da kuma amfani da sieves na ƙwayoyin cuta don haɓaka hanyoyin su da cimma tsarkakakken samfurin da ake so.
Lokacin aikawa: Yuni-27-2024