iskar gas desulphurization
Tsarin rage sulfur dioxide na hayaki (FGD) wani tsari ne na kare muhalli da ake amfani da shi don cire sulfur dioxide (SO2) daga hayakin da ke fita daga tashoshin wutar lantarki na mai. Babban burin tsarin FGD shine rage tasirin muhalli da SO2 ke haifarwa, musamman ruwan sama mai tsanani da matsalolin numfashi da ke shafar mutane wanda hakan na iya haifarwa. Ko da yake fitar SO2 yana faruwa ne musamman saboda kone kwal, hanyoyin tsabtace dutsen limestone da ake amfani da su a cikin tsarin FGD sun bayar da mafi girman kashi na cire oxides na sulfur a wasu tashoshin da aka gwada fiye da adadin da aka samu daga hanyoyin lime bushe. Tare da FGD, SO2 yana canzawa zuwa gypsum: wannan samfurin mai kyau na iya zama a sayar da shi a matsayin kayan aiki na farko don kera katako da kuma haɗawa da siminti a cikin masana'antar gini. Waɗannan tsarin suna da matuƙar muhimmanci don fuskantar ƙa'idodin muhalli. Ana amfani da su sosai a tashoshin wutar lantarki na kwal, wasu injinan masana'antu da sauran na'urorin konewa da ke kona mai dauke da sulfur.