KUTHA KWA GESI WOTCHEDWA NDI LAIMU/LIMESTONE SLURRY

Mawonekedwe

• Kuchita bwino kwa desulphurisation pamwamba pa 99% kumatha kukwaniritsidwa
• Kupezeka kopitilira 98% kutha kukwaniritsidwa
• Zomangamanga sizidalira malo enaake
• Zogulitsa
• Zopanda malire ntchito yonyamula katundu
• Njira yokhala ndi maumboni ambiri padziko lonse lapansi

Magawo a Njira

Magawo ofunikira a njira yonyowa ya desulphurisation ndi:

• Absorbent kukonzekera ndi mlingo
• Kuchotsa kwa SOx (HCl, HF)
• Kuthira madzi ndi kukonza zinthu

Mu njira iyi, miyala ya laimu (CaCO3) kapena quicklime (CaO) ingagwiritsidwe ntchito ngati zoyamwitsa. Kusankhidwa kwa chowonjezera chomwe chitha kuwonjezeredwa chowuma kapena ngati slurry chimapangidwa pamaziko a malire okhudzana ndi projekiti. Kuchotsa sulfure oxides (SOx) ndi zina acidic zigawo zikuluzikulu (HCl, HF), ndi flue mpweya amabweretsedwa kukhudzana kwambiri ndi slurry munali zowonjezera mu zone mayamwidwe. Mwa njira iyi, malo aakulu kwambiri omwe angatheke pamtunda amaperekedwa kuti asamutsidwe anthu ambiri. M'dera loyamwa, SO2 yochokera ku gasi wa flue imachita ndi choyezera kupanga calcium sulphite (CaSO3).

Dothi la miyala yamchere yomwe ili ndi calcium sulphite imasonkhanitsidwa mu absorber sump. Mwala wa laimu womwe umagwiritsidwa ntchito poyeretsa mpweya wa flue umawonjezeredwa mosalekeza ku sump ya absorber kuti zitsimikizire kuti mphamvu yoyeretsa ya absorber imakhala yosasinthasintha. The slurry ndiye amapopa mu zone mayamwidwe kachiwiri.

Mwa kuwombera mpweya mu sump chotsitsa, gypsum imapangidwa kuchokera ku calcium sulphite ndipo imachotsedwa mu ndondomekoyi monga chigawo cha slurry. Kutengera ndi zomwe zimafunikira pazomaliza, chithandizo china chimapangidwa kuti apange gypsum yogulitsa.

Zomera Zomera

Mu wet flue gas desulphurisation, otsegula opopera tower tower apambana omwe amagawidwa m'magawo awiri akulu. Awa ndi malo oyamwitsa omwe amawonekera ku gasi wa flue ndi sump ya absorber, momwe matope a miyala yamchere amatsekeredwa ndikusonkhanitsidwa. Pofuna kupewa ma deposits mu absorber sump, slurry imayimitsidwa ndi njira zosakaniza.

Mpweya wa chitoliro umalowa mu chotengera pamwamba pa mlingo wamadzimadzi ndiyeno kudzera m'dera la mayamwidwe, lomwe limaphatikizapo kupopera mbewu mankhwalawa ndi chochotsa nkhungu.

Dothi la miyala ya laimu lomwe limayamwa kuchokera ku sump yothirira limapopera bwino nthawi ino komanso potsutsana ndi gasi wa flue kudzera mumilingo yopopera. Kukonzekera kwa ma nozzles mu nsanja yopopera mbewu mankhwalawa ndikofunikira kwambiri pakuchotsa bwino kwa chotengera. Kukhathamiritsa kwakuyenda ndikofunikira kwambiri. Mu chochotsa nkhungu, madontho omwe amatengedwa kuchokera kumalo oyamwa ndi mpweya wa flue amabwereranso ku ndondomekoyi. Pakutuluka kwa chotengera, mpweya woyera umakhala wodzaza ndipo ukhoza kuchotsedwa mwachindunji kudzera pa nsanja yozizira kapena stack yonyowa. Mosasankha gasi woyera akhoza kutenthedwa ndi kutumizidwa ku mulu wouma.

Dongosolo lomwe limachotsedwa mu sump ya absorber limayamba kuchotsedwa madzi pogwiritsa ntchito ma hydrocyclone. Nthawi zambiri slurry wokhazikika uyu amathiridwanso madzi kudzera mu kusefera. Madzi, omwe amachokera ku ndondomekoyi, amatha kubwezeredwa kwambiri ku chotengera. Gawo laling'ono limachotsedwa mu kayendedwe ka kayendedwe kake kamene kamataya madzi otaya madzi.

Kuwonongeka kwa gasi wa flue m'mafakitale, malo opangira magetsi kapena malo otenthetsera zinyalala kumadalira ma nozzles omwe amatsimikizira kugwira ntchito bwino kwa nthawi yayitali komanso kupirira zovuta zachilengedwe. Ndi makina ake a mphuno, Lechler amapereka mayankho aukadaulo komanso okhazikika pakugwiritsa ntchito opopera kapena opopera opopera komanso njira zina mu flue gas desulphurisation (FGD).

Kunyowa desulphurization