Zvikonzero zve molecular sieve inactivation mukuchenesa system ye air separation unit

1, mhedzisiro yemvura yakawandisa yemukati pane molecular sieve chiitiko
Basa guru remhepo yekuparadzanisa unit purifier kubvisa hunyoro uye hydrocarbon content kubva mumhepo kuti ipe mweya wakaoma kune anotevera masisitimu. Chimiro chemidziyo chiri muchimiro chemubhedha wakatwasuka, wepasi wakamisikidzwa alumina yekuzadza urefu ndeye 590 mm, iyo yepamusoro 13X mamorekuru sieve kuzadza urefu ndeye 962 mm, uye maviri ekuchenesa anochinjika pakati peumwe neumwe. Pakati pazvo, yakabatidzwa alumina inonyanya kushambadzira mvura mumhepo, uye molecular sieve inoshandisa iyo molecular selective adsorption musimboti kushambadza mahydrocarbons. Zvichienderana nekuumbwa kwezvinhu uye adsorption zvimiro zvemolecular sieve, iyo adsorption order ndeiyi: H2O> H2S> NH3> SO2> CO2(kurongeka kweadsorption yemagasi ealkaline). H2O> C3H6> C2H2> C2H4, CO2, C3H8> C2H6> CH4( order of adsorption of hydrocarbons). Zvinogona kuoneka kuti ine yakasimba adsorption kuita kwemamorekuru emvura. Nekudaro, iyo yemvura yemukati ye molecular sieve yakanyanya kukwirira, uye yemahara mvura inoumba mvura crystallization ine molecular sieve. Iyo tembiricha (220 ° C) yakapihwa ne2.5MPa chiutsi chinoshandiswa kukwirisa-tembiricha patsva haisati yakwanisa kubvisa chikamu ichi chemvura yekristaro, uye saizi yepore yemamorekuru sieve inogarwa nekristaro emvura mamorekuru, saka haigone kuramba ichishambadza mahydrocarbon. Nekuda kweizvozvo, iyo molecular sieve inovharwa, hupenyu hwesevhisi hupfupika, uye mamorekuru emvura anopinda mune yakaderera-pressure plate heat exchanger yeiyo rectification system, zvichiita kuti chiteshi chekuyerera cheanopisa kupisa chitonhore uye chivhare, chinokanganisa nzira yekuyerera kwemhepo. uye kupisa kwekushisa kwekuchinja kwekushisa, uye mumatambudziko akakomba, chigadziro hachikwanisi kushanda zvakajairika.
2. Mhedzisiro yeH2S uye SO2 pane molecular sieve basa
Nekuda kweiyo yakasarudzika adsorption yemamorekuru sieve, kuwedzera kune yakakwirira adsorption yemamorekuru emvura, hukama hwayo hweH2S uye SO2 zvakare iri nani pane yayo adsorption kuita kwe CO2. H2S uye SO2 inobata nzvimbo inoshanda ye molecular sieve, uye iyo acidic components inopindirana ne molecular sieve, iyo ichaita kuti molecular sieve ive nechepfu uye ivharwe, uye simba rekushongedza re molecular sieve richaderera. Hupenyu hwesevhisi hwema molecular sieve hwakapfupikiswa.
Muchidimbu, iyo yakawandisa mwando yemukati, H2S uye SO2 gasi yemukati mumhepo yekubuda yemhepo yekuparadzanisa mhepo inotonhorera shongwe ndicho chikonzero chikuru chekusashanda kwema molecular sieve uye kupfupisa kwehupenyu hwesevhisi. Kuburikidza nekudzora kwakasimba kwezviratidziro zvemaitiro, kuwedzera kweyekuchenesa inoburitsa hunyoro analyzer, zvine musoro kusarudzwa kwemhando dzefungicide, ine nguva yakawandisa dosage yefungicide, mvura inotonhorera shongwe yekuwedzera mvura yakasvibira, yenguva dzose sampling yekuongorora yekupisa kupisa uye mamwe matanho, iyo yakachengeteka uye yakagadzikana. mashandiro emuchenesi anogona kutamba yekuona nenguva, yambiro nenguva, zvigadziriso zvenguva, kusvika pamwero mukuru kuve nechokwadi chekushandiswa kwema molecular sieve.