Pali njira zambiri zokhazikitsira njira zosiyanasiyana zogwiritsira ntchito mpweya wachilengedwe. Izi ndi momwe mpweya wachilengedwe umagwiritsidwira ntchito pazitsime za mpweya zomwe sizikugwirizana nazo. Zikuwonetsa momwe mpweya wachilengedwe wosakonzedwa umagwiritsidwira ntchito kukhala mpweya wachilengedwe kuti ugulitsidwe womwe umatumizidwa kumsika wa ogwiritsa ntchito kudzera m'mapaipi. Mpweya wachilengedwe (NGL): propane, butane ndi C5+ (ili ndi liwu lofala la pentane kuphatikiza hydrocarbon yolemera kwambiri). Mpweya wachilengedwe woyambirira nthawi zambiri umasonkhanitsidwa kuchokera ku gulu la zitsime zapafupi ndipo poyamba umakonzedwa mu chidebe cholekanitsa pamalo osonkhanitsira kuti chotsani madzi amadzimadzi aulere ndi mpweya wachilengedwe wosungunuka. Madzi osungunuka nthawi zambiri amatumizidwa ku fakitale yoyeretsera, ndipo madziwo amakonzedwa ndikuyesedwa ngati madzi otayira.
Kenako, mpweya wothira mafuta umatumizidwa ku fakitale yotsukira mpweya kudzera mu payipi, komwe nthawi zambiri kuyeretsa koyamba kumakhala chotsani mpweya wa asidi (hydrogen sulfide ndi carbon dioxide). Chifukwa cha magwiridwe antchito osiyanasiyana komanso zoletsa zachilengedwe za njira ya amine, ukadaulo watsopano wozikidwa pa kugwiritsa ntchito nembanemba za polima kulekanitsa carbon dioxide ndi hydrogen sulfide kuchokera ku mitsinje ya gasi yachilengedwe walandiridwa kwambiri. Nembanembayo ndi yokongola chifukwa siigwiritsa ntchito ma reagents. Mpweya wa asidi (ngati ulipo) umachotsedwa ndi chithandizo cha nembanemba kapena amine, kenako umatumizidwa ku unit yobwezeretsa sulfure, yomwe imasintha hydrogen sulfide mu mpweya wa asidi kukhala elemental sulfure kapena sulfuric acid. Pakati pa njira zomwe zingagwiritsidwe ntchito posintha izi, njira ya Claus ndiyo njira yodziwika kwambiri yobwezeretsa elemental sulfure, pomwe njira yolumikizirana yachikhalidwe ndi WSA (wet sulfuric acid process) ndi njira zomwe zimagwiritsidwa ntchito kwambiri pobwezeretsa sulfuric acid. Mpweya wochepa wa asidi ukhoza kuchiritsidwa ndi kuyaka.
Mpweya wotsalira wochokera ku Claus nthawi zambiri umatchedwa mpweya wamchira, kenako mpweyawo umakonzedwa mu chipangizo chothandizira mpweya wamchira kuti ubwezeretse sulfure yotsalayo ndikubwezeretsanso ku chipangizo cha Claus. Mofananamo, pali njira zambiri zomwe zingagwiritsidwe ntchito pochiza mpweya wamchira wa chipangizo cha Claus. Pachifukwa ichi, njira ya WSA ndiyoyeneranso chifukwa imatha kudzipangira yokha kutentha pa mpweya wamchira.
Gawo lotsatira la chomera choyeretsera mpweya ndikugwiritsa ntchito kuyamwa kobwezerezedwanso mu madzi a triethylene glycol (TEG), omwe amadziwika kuti ethylene glycol dehydration, deliquescent chloride desiccant, kapena chipangizo cha pressure swing adsorption (PSA) pogwiritsa ntchito solid adsorbent kuti absorption ibwezerezedwanso kuti ichotse nthunzi ya madzi mu mpweya. Njira zina zatsopano, monga kulekanitsa nembanemba, zitha kuganiziridwanso.
Kenako Mercury imachotsedwa pogwiritsa ntchito njira yothira madzi monga activated carbon kapena renewable molecular seeve.
Ngakhale kuti sizofala, nthawi zina njira imodzi mwa zitatu imagwiritsidwa ntchito kuchotsa ndi kukana nayitrogeni:
- Njira yochepetsera kutentha (chipangizo chochotsera nayitrogeni) imagwiritsa ntchito kusungunuka kwa kutentha kochepa. Ngati pakufunika, njirayo ingasinthidwe kuti ibwezeretse helium.
- Pakunyamula mafuta, mafuta opanda mafuta kapena zosungunulira zapadera zimagwiritsidwa ntchito ngati choyamwitsa.
- Njira yothira madzi imagwiritsa ntchito kaboni woyatsidwa kapena sieve ya molecular ngati absorbent. Kugwiritsa ntchito njira imeneyi kungakhale kochepa chifukwa akuti imayambitsa kutayika kwa butane ndi ma hydrocarbon olemera.
Lumikizanani nafe:
Sichuan Hengzhong Automation Equipment Co., Ltd.
www.rtgastreat.com
Imelo: sales01@rtgastreat.com
Foni/whatsapp: +86 138 8076 0589
Nthawi yotumizira: Mar-03-2023