Kuyini ukugqwala kwezinga lokushisa eliphansi le-boiler?
Ukugqwala kwe-sulfuric acid okwenzeka endaweni yokushisisa engemuva kubhayela (i-economizer, i-air preheater) kubizwa ngokuthi ukugqwala kwezinga lokushisa eliphansi ngoba igesi eliwuketshezi kanye namazinga okushisa odongeni lwamashubhu engxenyeni yendawo yokushisisa yangemuva aphansi.Ngemva kokugqwala okunezinga lokushisa eliphansi kwenzeka kushubhu ye-economizer, ukuvuza kungase kwenzeke phakathi nesikhathi esifushane, okudala izingozi zokuphepha.Ukuvala isithando somlilo ukuze silungiswe nakho kuzodala ukulahlekelwa okukhulu kwezomnotho.
Isizathu esiyinhloko sokugqwala kwezinga lokushisa eliphansi lama-boilers
Isibabule esikuphethiloli siyashiswa senze i-sulphur dioxide (S+02=SO2).I-sulphur dioxide iphinde ifakwe i-oxid ngaphansi kwesenzo se-catalyst ukwakha i-sulphur trioxide (2SO2+02=2S03).I-SO3 kanye nomhwamuko osegesini ephumayo ukhiqiza umhwamuko we-sulfuric acid (SO3+H2O =H2SO4).Ukuba khona komhwamuko we-sulfuric acid kwandisa kakhulu iphuzu lamazolo egesi ephumayo.Njengoba izinga lokushisa lomoya ku-preheater yomoya liphansi, izinga lokushisa legesi ye-flue esigabeni se-preheater aliphezulu, futhi izinga lokushisa lodonga ngokuvamile liphansi kunephuzu lamazolo e-flue gas.Ngale ndlela, umhwamuko we-sulfuric acid uzojiya endaweni yokushisa ye-air preheater, ubangele ukugqwala kwe-sulfuric acid.Ukugqwala okunezinga lokushisa eliphansi kuvame ukwenzeka kuma-preheater komoya, kodwa lapho isibabule esikuphethiloli siphezulu, i-coefficient yomoya eyeqile inkulu, okuqukethwe kwe-SO3 kugesi ephuma ku-flue kuphezulu, indawo yamazolo ene-asidi iyakhuphuka, futhi izinga lokushisa lamanzi okuphakelayo liyakhuphuka. iphansi (i-turbine ivaliwe ekushiseni okuphezulu), ishubhu ye-economizer ingase futhi ihlupheke ngenxa yezinga lokushisa eliphansi ukugqwala.
Ikesi lokugqwala kwezinga lokushisa eliphansi le-boiler
Ubhayela wenkampani ojikelezayo osebenzisa umbhede wamanzi waqala ukusebenza ngezikhathi ezingaphansi konyaka, futhi amapayipi amaningi kupayipi le-economizer eliphansi aba nokubhobozwa nokuvuza.Uphethiloli ongubhayela uyingxube yamalahle ane-bituminous nodaka, okokusebenza kweshubhu ye-economizer iyinsimbi engu-20 (GB/T 3087-2008), futhi izinga lokushisa lokungenisa economizer ngokuvamile lingaphansi kuka-100°C.
Izizathu zokubhobozwa nokuvuza kweshubhu le-economizer zahlaziywa ngokuhlaziywa kokwakheka kwezinto, ukuhlolwa kwempahla emishini, ukuhlaziywa kwe-metallographic, ukuskena i-electron microscope morphology kanye nokuhlaziywa kwe-spectrum yamandla, ukuhlaziywa kwesigaba se-X-ray diffraction, njll. Ukuhlaziywa kwathola ukuthi ishubhu ye-economizer isebenza ekushiseni okuphansi, futhi imikhiqizo yokugqwala iqukethe inani elikhulu lezinto ze-S ne-Cl.Udonga lwangaphandle lweshubhu ye-economizer luhlushwa izinga lokushisa eliphansi lokugqwala ngaphansi kokusebenza okunezinga lokushisa eliphansi kanye nokugqwala kwe-asidi ngesikhathi sokuvalwa, okuholela ekugcineni ekongeni amalahle.Ipayipi ligqwalile, linembobo futhi liyavuza.
Izinyathelo zokuvimbela ukugqwala kwezinga lokushisa eliphansi
1. Khulisa izinga lokushisa lodonga lweshubhu ye-preheater yomoya ukuze izinga lokushisa lodonga libe phezulu kunephoyinti lamazolo egesi ephuma ku-flue.
2. Izithasiselo zegesi ye-flue ukuze zinciphise i-SO3 futhi zivimbele ukukhiqizwa komhwamuko we-sulfuric acid.3. Sebenzisa izinto ezikwazi ukumelana nezinga lokushisa eliphansi ukuze wenze ama-air preheaters kanye nama-economizers.
4. Sebenzisa ukushiswa kwe-oxygen ephansi ukuze unciphise i-oksijini eyeqile ku-flue gas futhi uvimbele futhi unciphise ukuguqulwa kwe-SO2 ku-SO3.
5. Ngokuthola izinga lokushisa lamazolo e-asidi, indawo yamazolo e-asidi ngaphansi kwezimo ezithile zokusebenza ingaziwa ngokunembile, ngaleyo ndlela ilungise izinga lokushisa legesi yokukhipha umoya ukuze kuzuzwe izimo ezingcono kakhulu zokonga amandla nokwelula ukuphila kukabhayela.
Isikhathi sokuthumela: Nov-30-2023
