Iyunithi yokucoca igesi ye-hydrogen sulfide

Intshayelelo

Ngophuhliso loluntu lwethu, sixhasa amandla acocekileyo, ngoko ke imfuno yegesi yendalo njengamandla acocekileyo nayo iyanda. Nangona kunjalo, kwinkqubo yokusetyenziswa kwegesi yendalo, imithombo emininzi yegesi idla ngokuba ne-hydrogen sulfide, eya kubangela ukugqwala kwezixhobo kunye nemibhobho, ingcolise okusingqongileyo kwaye ibeke impilo yabantu emngciphekweni. Ngophuhliso lwesayensi netekhnoloji, Ukusetyenziswa ngokubanzi kwetekhnoloji yokususa i-sulfurization yegesi yendalo kusombulule ezi ngxaki, kodwa kwangaxeshanye, iindleko zokucocwa kunye nonyango lwegesi yendalo zinyukile ngokufanelekileyo.

Umgaqo

I-molecular sieve desulphurization (ekwabizwa ngokuba yi-desulfurization) skid, ekwabizwa ngokuba yi-molecular sieve sweeting skid, sisixhobo esibalulekileyo kwiprojekthi yokucoca igesi yendalo okanye yokulungisa igesi yendalo.

Isihluzo semolekyuli yikristale ye-alkali metal aluminosilicate enesakhiwo samathambo kunye nesakhiwo esifanayo se-microporous. Sisihluzo esisebenza kakuhle, amandla aphezulu okufunxa kunye nokukhetha ukufunxa. Okokuqala, kukho imijelo emininzi enobukhulu obufanayo be-pore kunye nemingxunya ecwangciswe kakuhle kwisakhiwo sesihluzo semolekyuli, esingaboneleli nje kuphela indawo enkulu kakhulu, kodwa sikwathintela ukungena kweemolekyuli ezinkulu kuneemingxuma; Okwesibini, umphezulu wesihluzo semolekyuli une-polarity ephezulu ngenxa yeempawu ze-ionic lattice, ngoko ke sinamandla aphezulu okufunxa iimolekyuli ezingagcwaliyo, iimolekyuli ze-polar kunye neemolekyuli ezinokufunxa. Amanzi kunye ne-hydrogen sulfide ziimolekyuli ze-polar, kwaye ububanzi bemolekyuli buncinci kunobubanzi be-pore yesihluzo semolekyuli. Xa igesi eluhlaza equlethe amanzi angaphantsi idlula kwibhedi yesihluzo semolekyuli kubushushu begumbi, amanzi angaphantsi kunye ne-hydrogen sulfide ziyafunxwa, Ngoko ke, umxholo wamanzi kunye ne-hydrogen sulfide kwigesi yokutya uyancitshiswa, kwaye injongo yokuphelelwa ngamanzi emzimbeni kunye nokususwa kwe-sulfurization iyafezekiswa. Inkqubo yokufunxa i-molecular seeve ibandakanya ukufunxa kwe-capillary kunye nokufunxa ngokwasemzimbeni okubangelwa ngamandla e-van der Waals. Ngokwe-equation kaKelvin, ukufunxa kwe-capillary kuncipha ngokunyuka kobushushu, ngelixa ukufunxa ngokwasemzimbeni kuyinkqubo exothermic, kwaye ukufunxa kwayo kuncipha ngokunyuka kobushushu kwaye kuyanda ngokunyuka koxinzelelo; Ke ngoko, inkqubo yokufunxa i-molecular seeve idla ngokuqhutywa kubushushu obuphantsi kunye noxinzelelo oluphezulu, ngelixa ukuhlaziywa kohlalutyo kwenziwa kubushushu obuphezulu kunye noxinzelelo oluphantsi. Phantsi kwesenzo segesi yokuvuselela yobushushu obuphezulu, ecocekileyo nephantsi koxinzelelo, i-molecular seeve adsorbent ikhupha i-adsorbate kwi-micropore ukuya kwi-regeneration gas flow de inani le-adsorbate kwi-adsorbent lifikelele kwinqanaba eliphantsi kakhulu. Ikwanakho nokukwazi ukufunxa amanzi kunye ne-hydrogen sulfide kwi-feed gas, iqonda inkqubo yokuvuselela kunye nokurisayikilisha ye-seeve.

Inkqubo yetekhnoloji

Ukuhamba kwenkqubo kuboniswe kumzobo. Le yunithi isebenzisa iinkqubo ezintathu zeenqaba, enye yeenqaba zokufunxa, enye yeenqaba zokuvuselela kunye nenye yeenqaba zokupholisa. Xa igesi yokutya ingena kwiyunithi, ubushushu begesi yokutya buncitshiswa yiyunithi yokupholisa ngaphambi kokuba iphole, emva koko amanzi akhululekileyo asuswa ngumhluzi we-coalescence, aze angene kwi-molecular sieve desulfurization tower a-801, a-802 kunye ne-a-803. Amanzi kunye ne-hydrogen sulfide kwigesi yokutya zifunxa yi-molecular sieve ukuze kufezekiswe inkqubo yokukhupha amanzi emzimbeni kunye ne-hydrogen sulfide. Igesi ecocekileyo yokukhupha amanzi emzimbeni kunye nokususwa kwe-hydrogen sulfide ingena kwisihluzi sothuli lwegesi yemveliso ukuze kususwe uthuli lwe-molecular sieve kwaye ithunyelwa ngaphandle njengegesi yemveliso.

Isihluzo semolekyuli sidinga ukuhlaziywa emva kokufaka amanzi athile kunye ne-hydrogen sulfide. Inxalenye yegesi yemveliso ikhutshwa kwigesi yemveliso emva kokuhluzwa kothuli njengegesi yokuhlaziya. Emva kokuba igesi ifudunyezwe ukuya kuma-270 ℃ kwisithando sokufudumala, inqaba ifudunyezwa ukuya kuma-270 ℃ ukusuka phezulu ukuya ezantsi ngenqaba yokucoca i-molekyuli egqibe inkqubo yokucoca, ukuze amanzi kunye ne-hydrogen sulfide efakwe kwisihluzo semolekyuli zisonjululwe zibe yigesi yokuhlaziya etyebileyo kwaye zigqibezele inkqubo yokuhlaziya.

Igesi yokuvuselela etyebileyo emva kokuphuma kwinqaba yokuvuselela ingena kwi-condenser yegesi yokuvuselela ukuze ipholiswe ukuya kuthi ga kwi-50 ℃, kwaye igesi ipholiswe ize inikwe kwi-flare header.

Inqaba yesihluzo se-molecular kufuneka ipholiswe emva kokuvuselelwa. Ukuze ibuyiselwe ngokupheleleyo kwaye isebenzise amandla obushushu, igesi yokuvuselela isetyenziswa kuqala njengegesi evuthelayo ebandayo, kwaye inqaba ipholiswa ukuya kuthi ga kwi-50 ℃ ukusuka phezulu ukuya ezantsi ngenqaba yesihluzo se-molecular desulfurization egqibile inkqubo yokuvuselela. Kwangaxeshanye, itshiswa yodwa. Emva kokuba igesi evuthelayo ebandayo iphume kwinqaba yokupholisa, ingena kwi-regeneration gas heating furnace ukuze ifudumale, ize ivuselele i-molecular sieve desulfurization tower njengegesi yokuvuselela ethambileyo. Isixhobo sitshintsha rhoqo emva kweeyure ezi-8.

Ipharamitha yoYilo