A zahiri, a yanayi, wasu ƙamshin sulfur da sulfur da ke faruwa ta halitta sun haɗa da feshin skunk da ƙwai masu ruɓewa. Sunan sulfur a matsayin wani abu mai ƙamshi mai ban tsoro ya sa masana'antar iskar gas ta kira duk wani iskar gas mai sulfur a ciki, iskar tsami. Baya ga mummunan ƙamshin sulfur ɗinsa na iya zama mai kisa ga mutane idan yana da ƙarfi sosai, kuma yana da lalata. Don haka cire shi daga rafukan iskar gas muhimmin tsari ne, wanda ake kira zaƙi na iskar gas.
Domin a yi la'akari da iskar gas mai tsami, dole ne hydrogen sulfide ya wuce milligram 5.7 a kowace cubic mita na iskar gas. Zakin iskar gas yawanci yana amfani da wani tsari da ake kira maganin amine don cire sulfur daga kwararar gas. Sulfur yana da alaƙa da amine kuma lokacin da ya ratsa ta hasumiyar da ke ɗauke da amine, sulfur yana manne da amine kuma ana cire shi daga kwararar. Maganin amine yana aiki iri ɗaya da maganin glycol saboda duka suna amfani da maganin ruwa don cire abubuwan da ba a so da mahaɗan daga kwararar iskar gas.
Sulfur yana da ƙamshi, yana kuma iya zama da amfani. Misali, ana yawan amfani da sulfur a cikin taki, ashana, da kuma maganin kwari kuma ana amfani da shi wajen yin sulfur acid wanda ke da aikace-aikace da yawa a masana'antu. Ana iya dawo da sulfur da aka cire daga kwararar iskar gas ta amfani da Tsarin Claus kuma a sayar da shi azaman samfuri daban da iskar gas.
Tsarin Claus yana da matakai biyu: matakin zafi da matakin catalytic.
An tsara matakin zafi ne don mayar da mafi yawan hydrogen sulfide da aka cire daga kwararar iskar gas zuwa sulfur na yau da kullun. Ana yin wannan ta hanyar shafa iskar hydrogen sulfide a cikin iska mai zafi. Kimanin kashi 60-70% na sulfur ana samarwa a wannan matakin.
An tsara matakin catalytic don ɗaukar sauran hydrogen sulfide da sabon sulfur da aka ƙirƙira don yin ƙarin sulfur ta hanyar dumama su tare akan wani abu mai kara kuzari, wanda yawanci ana kunna shi alumina da titania na musamman. Titania na musamman yana taimakawa wajen canza sauran hydrogen sulfide zuwa sulfur kuma alumina mai kunnawa yana taimakawa wajen kare titania daga gubar sulfur saboda iskar oxygen da ke shiga.
Ana samun kusan kashi 97% na sulfur da aka cire daga magudanar iskar gas ta hanyar amfani da Tsarin Claus. A ƙasar Sin, kusan kashi 15% na dukkan sulfur da aka samar ana fitar da su ne daga magudanar iskar gas.
Lokacin Saƙo: Agusta-05-2019