ƊAN RUFE ISKA DA RUWAN TUSHEN TUSHE DA LIME/LIMESTONE

Siffofi

• Ana iya cimma ingancin desulphurization sama da kashi 99%
• Ana iya samun sama da kashi 98%
• Injiniyanci bai dogara da kowane takamaiman wuri ba
• Samfurin da za a iya tallata shi
• Aikin ɗaukar kaya mara iyaka
• Hanyar da ke da mafi yawan adadin nassoshi a duniya

Matakan Tsarin Aiki

Matakan aiwatarwa masu mahimmanci na wannan hanyar desulphurization mai jika sune:

• Shirye-shiryen sha da kuma allurar da za a yi amfani da su
• Cire SOx (HCl, HF)
• Tsaftacewa da kuma tsaftace samfurin

A wannan hanyar, ana iya amfani da dutse mai laushi (CaCO3) ko quicklime (CaO) a matsayin mai sha. Zaɓin wani ƙari wanda za'a iya ƙarawa a bushe ko a matsayin slurry ana yin sa ne bisa ga yanayin iyakokin aikin. Don cire sulfur oxides (SOx) da sauran abubuwan acidic (HCl, HF), ana haɗa iskar gas ɗin mai zafi sosai da slurry mai ɗauke da ƙari a yankin sha. Ta wannan hanyar, ana samar da mafi girman yankin saman da zai yiwu don canja wurin taro. A yankin sha, SO2 daga iskar gas ɗin mai zafi yana amsawa da mai sha don samar da calcium sulphite (CaSO3).

Ana tattara sinadarin limestone mai ɗauke da sinadarin calcium sulphite a cikin ruwan sha. Ana ci gaba da ƙara sinadarin limestone da ake amfani da shi wajen tsaftace iskar gas ɗin da ke cikin ruwan sha don tabbatar da cewa ƙarfin tsaftacewar mai shan ruwan ya kasance iri ɗaya. Sannan ana sake tura sinadarin lime ɗin zuwa yankin sha.

Ta hanyar hura iska zuwa cikin bututun sharar ruwa, ana samar da gypsum daga sinadarin calcium sulphite kuma ana cire shi daga aikin a matsayin wani ɓangare na slurry. Dangane da buƙatun inganci na samfurin ƙarshe, ana yin ƙarin magani don samar da gypsum mai kasuwa.

Injiniyan Shuka

A cikin iskar gas mai danshi, masu shaye-shaye a buɗe sun fi rinjaye waɗanda aka raba zuwa manyan yankuna biyu. Waɗannan su ne yankin shaye-shaye da iskar gas da kuma wurin shaye-shaye, inda ake taruwa da tattara sinadarin limestone. Don hana taruwa a cikin wurin shaye-shaye, ana dakatar da slurry ta hanyar amfani da hanyoyin haɗawa.

Iskar gas ɗin tana kwarara zuwa cikin abin sha mai sha sama da matakin ruwa sannan ta cikin yankin sha, wanda ya ƙunshi matakan feshi masu haɗuwa da kuma abin kawar da hazo.

Ana fesa ruwan ƙasa mai laushi da aka tsotse daga cikin bututun mai shanyewa a lokaci guda kuma a akasin haka zuwa ga iskar gas ta hanyar fesawa. Shirya bututun a cikin hasumiyar fesawa yana da matuƙar muhimmanci ga ingancin cirewar mai shanyewar. Saboda haka, inganta kwararar ruwa yana da matuƙar mahimmanci. A cikin na'urar kawar da hazo, digo-digo da iskar gas ɗin ke ɗauka daga yankin shanyewar ana mayar da su zuwa ga aikin. A wajen fitar da mai shanyewar, iskar gas mai tsabta tana cika kuma ana iya cire ta kai tsaye ta hanyar hasumiyar sanyaya ko kuma tarin danshi. A madadin, ana iya dumama iskar mai tsabta sannan a tura ta zuwa wani wuri da ya bushe.

Ruwan da aka cire daga cikin ruwan da ke shanyewa yana shanyewa ta hanyar hydrocyclones. Gabaɗaya, wannan ruwan da aka riga aka tattara yana shanyewa ta hanyar tacewa. Ruwan da aka samo daga wannan tsari, galibi ana iya mayar da shi ga mai shanyewa. Ana cire ƙaramin ɓangare a cikin tsarin zagayawar jini ta hanyar kwararar ruwan sharar gida.

Rufe iskar gas mai gurbata muhalli a masana'antu, tashoshin wutar lantarki ko wuraren ƙona shara ya dogara ne akan bututun hayaki waɗanda ke tabbatar da aiki daidai na tsawon lokaci kuma suna jure wa yanayi mai tsauri. Tare da tsarin bututun hayakinsa, Lechler yana ba da mafita na ƙwararru da kuma masu amfani ga masu goge feshi ko masu shan feshi da kuma sauran hanyoyin rage iskar gas mai gurbata muhalli (FGD).

Rufewar ruwa mai laushi