Iyunithi yokuhlanza igesi kaphethiloli ye-hydrogen sulfide

Isingeniso

Ngokuthuthuka komphakathi wethu, sisekela amandla ahlanzekile, ngakho-ke isidingo segesi yemvelo njengamandla ahlanzekile naso siyakhula. Kodwa-ke, enkambisweni yokuxhashazwa kwegesi yemvelo, imithombo eminingi yegesi ivame ukuqukethe i-hydrogen sulfide, ezobangela ukugqwala kwemishini namapayipi, ingcolise imvelo futhi ibeke impilo yabantu engozini. Ngokuthuthuka kwesayensi nobuchwepheshe, Ukusetshenziswa kabanzi kobuchwepheshe bokususa igesi yemvelo kuxazulule lezi zinkinga, kodwa ngesikhathi esifanayo, izindleko zokuhlanzwa nokwelashwa kwegesi yemvelo zikhuphukile ngokufanele.

Isimiso

I-molecular sieve desulphurization (ebizwa nangokuthi i-desulfurization) skid, ebizwa nangokuthi i-molecular sieve sweeting skid, iyithuluzi elibalulekile ekuhlanzweni kwegesi yemvelo noma iphrojekthi yokulungisa igesi yemvelo.

Isihlungi se-molecular siwukristalu we-alkali metal aluminosilicate onesakhiwo samathambo kanye nesakhiwo esifanayo se-microporous. Siyisihlungi esisebenza kahle kakhulu, amandla aphezulu okumunca kanye nokukhetha kokumunca. Okokuqala, kuneziteshi eziningi ezinosayizi we-pore ofanayo kanye nezimbobo ezihlelwe kahle esakhiweni sesihlungi se-molecular, esingagcini nje ngokuhlinzeka indawo enkulu kakhulu, kodwa futhi sikhawulela ukungena kwama-molecule amakhulu kunezimbobo; Okwesibili, ubuso besihlungi se-molecular bune-polarity ephezulu ngenxa yezici ze-ionic lattice, ngakho-ke sinamandla aphezulu okumunca ama-molecule angagcwali, ama-molecule e-polar kanye nama-molecule aqhekeka. Amanzi kanye ne-hydrogen sulfide kungama-molecule e-polar, futhi ububanzi bama-molecule buncane kunobubanzi be-pore besihlungi se-molecular. Lapho igesi eluhlaza equkethe amanzi angcolile idlula embhedeni wesihlungi se-molecular ekushiseni kwegumbi, amanzi angcolile kanye ne-hydrogen sulfide kuyamuncwa, Ngakho-ke, okuqukethwe kwamanzi kanye ne-hydrogen sulfide kugesi yokudla kuyancishiswa, futhi injongo yokuphelelwa amanzi emzimbeni kanye nokususwa kwe-sulfurization iyafezeka. Inqubo yokumunca isihlungi sama-molecule ihlanganisa ukuminyana kwama-capillary kanye nokumunca ngokomzimba okubangelwa amandla e-van der Waals. Ngokusho kwe-equation kaKelvin, ukuminyana kwama-capillary kwehla ngokukhuphuka kwezinga lokushisa, kuyilapho ukumunca ngokomzimba kuyinqubo exothermic, futhi ukumunca kwayo kwehla ngokukhuphuka kwezinga lokushisa futhi kuyanda ngokukhuphuka kwengcindezi; Ngakho-ke, inqubo yokumunca isihlungi sama-molecule ivame ukwenziwa ekushiseni okuphansi kanye nokucindezela okuphezulu, kuyilapho ukuvuselelwa kokuhlaziya kwenziwa ekushiseni okuphezulu kanye nokucindezela okuncishisiwe. Ngaphansi kwesenzo segesi yokuvuselela yokushisa okuphezulu, ehlanzekile nephansi, i-adsorbent yesihlungi sama-molecule ikhipha i-adsorbate ku-micropore ekugelezeni kwegesi yokuvuselela kuze kube yilapho inani le-adsorbate ku-adsorbent lifinyelela ezingeni eliphansi kakhulu. Iphinde inamandla okumunca amanzi kanye ne-hydrogen sulfide kusuka kugesi yokuphakelayo, iqaphela inqubo yokuvuselela nokuvuselela yesihlungi.

Inqubo yobuchwepheshe

Ukugeleza kwenqubo kuboniswe kumdwebo. Iyunithi isebenzisa inqubo emithathu yemibhoshongo, umbhoshongo owodwa wokumunca, umbhoshongo owodwa wokuvuselela kanye nombhoshongo owodwa wokupholisa. Lapho igesi yokuphakelayo ingena kuyunithi, izinga lokushisa legesi yokuphakelayo liyancishiswa yiyunithi yokuphola ngaphambi kokupholisa, bese amanzi akhululekile asuswa yisihlukanisi se-coalescence, bese ingena ku-molecular sieve desulfurization tower a-801, a-802 kanye no-a-803. Amanzi kanye ne-hydrogen sulfide kugesi yokuphakelayo kumonywa yi-molecule sieve ukuze kufezwe inqubo yokumunca amanzi kanye ne-hydrogen sulfide. Igesi ehlanziwe yokususa amanzi kanye nokususwa kwe-hydrogen sulfide ingena kusihlungi sothuli lwegesi yomkhiqizo ukuze kususwe uthuli lwesisefo se-molecule futhi ithunyelwa ngaphandle njengegesi yomkhiqizo.

Isihlungi sama-molecule sidinga ukuvuselelwa ngemva kokumunca inani elithile lamanzi kanye ne-hydrogen sulfide. Ingxenye yegesi yomkhiqizo ikhishwa isuka kugesi yomkhiqizo ngemva kokuhluzwa kothuli njengegesi yokuvuselelwa. Ngemva kokuba igesi ishisiwe ku-270 ℃ esithandweni sokushisa, umbhoshongo ushiswa kancane kancane ku-270 ℃ kusukela phezulu kuya phansi ngokusebenzisa umbhoshongo wokususa i-sulfurization wesihlungi sama-molecule oqede inqubo yokumunca, ukuze amanzi kanye ne-hydrogen sulfide efakwe kusihlungi sama-molecule kuxazululwe kube yigesi yokuvuselelwa ecebile futhi kuqedele inqubo yokuvuselelwa.

Igesi yokuvuselela ecebile ngemva kokuphuma embhoshongweni wokuvuselela ingena kwi-condenser yegesi yokuvuselela ukuze ipholiswe cishe ku-50 ℃, bese igesi ipholiswa bese inikezwa ku-flare header.

Umbhoshongo wesihlungo sama-molecule udinga ukupholiswa ngemva kokuvuselelwa. Ukuze ubuyiselwe ngokugcwele futhi usebenzise amandla okushisa, igesi yokuvuselela isetshenziswa kuqala njengegesi ebandayo ephefumulayo, bese umbhoshongo upholiswa ube cishe ngu-50 ℃ kusukela phezulu kuya phansi ngombhoshongo wokususa i-sulfurization wesihlungo sama-molecule oqede inqubo yokuvuselelwa. Ngesikhathi esifanayo, ushiswa wodwa. Ngemva kokuba igesi ebandayo ephefumulayo iphume embhoshongweni wokupholisa, ingena esithandweni sokushisa igesi yokuvuselela ukuze ifudumale, bese iphinda ivuselele umbhoshongo wokususa i-sulfurization wesihlungo sama-molecule njengegesi yokuvuselela engenamafutha. Idivayisi ishintsha njalo emahoreni angu-8.

Ipharamitha Yokuklama