UKUCUKUCWA KWEGESI ELIMANZI NGOKUSHISA ...

Izici

• Ukusebenza kahle kokususa i-sulphurization okungaphezu kuka-99% kungafinyelelwa
• Ukutholakala okungaphezu kuka-98% kungatholakala
• Ubunjiniyela abuxhomekile kunoma iyiphi indawo ethile
• Umkhiqizo othengiswayo
• Ukusebenza komthwalo wezingxenye okungenamkhawulo
• Indlela enenani elikhulu kakhulu lezinkomba emhlabeni

Izigaba Zenqubo

Izigaba ezibalulekile zenqubo yale ndlela yokucwilisa i-wet desulphurisation yilezi:

• Ukulungiswa kanye nomthamo womuthi ofunxayo
• Ukususwa kwe-SOx (HCl, HF)
• Ukususa amanzi nokulungisa umkhiqizo

Kule ndlela, i-limestone (CaCO3) noma i-quicklime (CaO2) ingasetshenziswa njengento emunca amanzi. Ukukhethwa kwesithasiselo esingangezwa somile noma njengesithasiselo kwenziwa ngokusekelwe ezimweni zomngcele ezithile zephrojekthi. Ukuze kususwe ama-sulphur oxides (SOx) nezinye izingxenye ze-acidic (HCl, HF), igesi ye-flue ilethwa ekuthinteni okukhulu nesithasiselo esiqukethe isithasiselo endaweni yokumunca. Ngale ndlela, indawo enkulu kakhulu ebusweni yenziwa itholakale ukuze idluliselwe ngobuningi. Endaweni yokumunca, i-SO2 evela kugesi ye-flue isabela nesithasiselo ukuze yakhe i-calcium sulphite (CaSO3).

I-limestone slurry equkethe i-calcium sulphite iqoqwa e-absorber sump. I-limestone esetshenziselwa ukuhlanza amagesi e-flue ifakwa njalo e-absorber sump ukuqinisekisa ukuthi amandla okuhlanza e-absorber ahlala engaguquki. I-slurry bese iphonswa endaweni yokumunca futhi.

Ngokufutha umoya ungene emfucumfucwini yokumunca, i-gypsum yakhiwa nge-calcium sulphite futhi isuswa enkambisweni njengengxenye ye-slurry. Kuye ngezidingo zekhwalithi zomkhiqizo wokugcina, kwenziwa ukwelashwa okwengeziwe ukuze kukhiqizwe i-gypsum ethengiswayo.

Ubunjiniyela Bezitshalo

Ekususeni igesi yoketshezi olumanzi, kuye kwanda ama-absorber tower avulekile ahlukaniswe ngezindawo ezimbili eziyinhloko. Lezi yizindawo zokumunca ezivezwe kugesi yoketshezi kanye ne-absorber sump, lapho i-limestone slurry ibanjwa khona futhi iqoqwe. Ukuze kuvinjelwe ukufakwa kwe-absorber sump, i-slurry imiswa ngezindlela zokuxuba.

Igesi yoketshezi igeleza ingene ku-absorber ngaphezu kwezinga loketshezi bese idlula endaweni yokumunca, equkethe amazinga okufafaza ahambisanayo kanye ne-mist eliminator.

I-limestone slurry emuncwa emfucumfucwini wommuncwa ifuthwa kahle ngokulingana futhi iphambane negesi yomoya ngokusebenzisa amazinga okufutha. Ukuhlelwa kwama-nozzles embhoshongweni wokufutha kubaluleke kakhulu ekusebenzeni kahle kokususa ummuncwa. Ngakho-ke, ukulungiswa kokugeleza kwamanzi kuyadingeka kakhulu. Ku-mist eliminator, amaconsi athwalwa endaweni yokumuncwa yigesi yomoya abuyiselwa enkambisweni. Ekuphumeni kommuncwa, igesi ehlanzekile iyagcwala futhi ingasuswa ngqo ngombhoshongo wokupholisa noma inqwaba emanzi. Uma ukhetha, igesi ehlanzekile ingashiswa futhi idluliselwe enqwabeni eyomile.

I-slurry ekhishwe esitsheni sokumunca amanzi ikhishwa amanzi kuqala ngama-hydrocyclones. Ngokuvamile le slurry egxilile ngaphambili ikhishwa amanzi ngokuhluzwa. Amanzi, atholakala kule nqubo, angabuyiselwa kakhulu ku-absorber. Ingxenye encane isuswa enkambisweni yokujikeleza kwegazi ngendlela yokugeleza kwamanzi angcolile.

Ukususwa kwegesi yomoya ongcolile ezitshalweni zezimboni, ezitshalweni zikagesi noma ezitshalweni zokushisa imfucuza kuncike kuma-nozzle aqinisekisa ukusebenza okunembile isikhathi eside futhi amelana nezimo zemvelo ezinamandla kakhulu. Ngezinhlelo zayo zama-nozzle, i-Lechler inikeza izixazululo zobungcweti nezigxile ekusetshenzisweni kwama-scrubbers okufutha noma ama-spray absorbers kanye nezinye izinqubo zokususwa kwegesi yomoya ongcolile (FGD).

Ukususwa kwe-sulphurization okumanzi