Tsarin, nau'i da kuma tsarin gas desulfurization na duniya yana da bambanci sosai, yafi amfani da dutsen kalkari (CaCO3), kalkari (CaO) ko sodium carbonate (Na2CO3) kamar slurry a matsayin wanki, a cikin hasumiyar amsawa don wanke hayaki, don haka kawar da SO2 a cikin hayaki. Wannan tsari yana da shekaru 50 na tarihi, bayan ci gaba da ingantawa da ingantawa, fasahar ta zama mai girma, kuma tana da ingancin desulfurization mai girma (90% ~ 98%), babban ƙarfin na'urar, ƙarfin daidaitawa da nau'ikan kwal, ƙananan farashin aiki da sauƙin sake dawo da kayayyaki. A cewar Amurka Environmental Protection Agency (EPA) kididdiga, a cikin Amurka wutar lantarki tashar amfani da ruwa desulfurization na'urar, ruwa lime hanyar wakiltar 39.6%, lime dutse hanyar wakiltar 47.4%, biyu hanyoyin wakiltar 87%; Hanyar dual alkali ta kai kashi 4.1% kuma hanyar sodium carbonate ta kai kashi 3.1%. A duk faɗin duniya (kamar Jamus, Japan, da sauransu), a cikin manyan wutar lantarki, fiye da kashi 90% suna amfani da tsarin gas desulfurization na danshi / limestone-plaster.

Manyan hanyoyin halayen sunadarai na lime ko limestone sune:

石灰法： SO2 + CaO + 1 / 2H2O → CaSO3·1/2H2O

Hanyar dutsen kalkari: SO2 + CaCO3 + 1 / 2H2O → CaSO3 · 1 / 2H2O + CO2

Babban amfaninsa shine iya gudanar da ci gaban kasuwanci sosai, kuma albarkatun mai sha yana da wadataccen kudi, ƙarancin farashi, za a iya zubar da sharar gida ko sake dawo da ita a matsayin kayan aikin plaster. A halin yanzu, kalkari / kalkari hanyar ne mafi amfani da FGD tsari a duniya, ga high sulfur kwal, desulfurization iya zama sama da 90%, ga low sulfur kwal, desulfurization iya zama sama da 95%.

Tsarin gargajiya na lime / limestone yana da yiwuwar lahani, wanda ya bayyana a matsayin ƙarancin kayan aiki, toshewa, lalata da lalacewa. Don magance waɗannan matsalolin, masana'antun kayan aiki daban-daban sun yi amfani da hanyoyi daban-daban don haɓaka tsarin tsari na ƙarni na biyu da na uku na kalkari / kalkari.

Tsarin FGD mafi girma yana da: hanyar magnesium hydroxide; Hanyar sodium hydroxide; Amurka Davy Mckee Wellman-Lord FGD aiki; Ammonia da dai sauransu.

A cikin tsari mai zafi, matsalar sake dumama hayaki ta shafi saka hannun jari kai tsaye a cikin tsarin FGD gaba ɗaya. Saboda bayan tsarin desulfurization na zafin jiki na hayaki yana da ƙarancin zafin jiki (45 ℃), mafi yawa a ƙarƙashin wurin ruwa, idan ba tare da sake dumama ba kai tsaye a cikin hayaki ba, yana da sauƙin samar da acid hazo, lalata hayaki, kuma ba zai taimaka wa yaduwar hayaki ba. Saboda haka wet hanyar FGD na'urorin ne gabaɗaya sanye da hayaki gas dumama tsarin. A halin yanzu, mafi yawan aikace-aikace ne fasaha balaga sake dawowa (juyawa) irin hayaki gas zafi musayar (GGH). Farashin GGH ya fi tsada kuma yana da babban rabo na saka hannun jari na FGD gaba ɗaya. A cikin 'yan shekarun nan, kamfanin Mitsubishi na Japan ya haɓaka nau'in GGH mai ceto wanda ba shi da zubuwa, wanda ya magance matsalar zubuwa da hayaki mafi kyau, amma har yanzu farashin ya fi girma. Tsohon kamfanin SHU na Jamus ya haɓaka sabon tsari wanda zai iya ceton GGH da chimney, shi ya shigar da dukan na'urar FGD a cikin hasumiyar sanyaya ta tashar wutar lantarki, yana amfani da zafin ruwa na tashar wutar lantarki don dumama hayaki, yana aiki da kyau, hanyar da ke da alƙawari sosai.