Yintoni kwibhoyila umhlwa ubushushu obuphantsi?
Umhlwa we-asidi ye-Sulphuric owenzeka kumphezulu wokufudumeza ongasemva webhoyila (i-economizer, i-preheater yomoya) ibizwa ngokuba ngumhlwa wobushushu obuphantsi ngenxa yokuba irhasi yeflue kunye nobushushu bodonga lwetyhubhu kumphezulu wobushushu obungasemva buphantsi.Emva kokushisa okuphantsi kwe-corrosion kwi-tube ye-economizer, ukuvuza kungenzeka ngexesha elifutshane, kubeka imingcipheko yokhuseleko.Ukucinywa kweziko ukuze kulungiswe nako kuya kubangela ilahleko enkulu kwezoqoqosho.
Eyona nto ibangela ukubola okuphantsi kobushushu beebhoyili
Isalfa ekwizibaso iyatshiswa yenze i-sulphur dioxide (S+02=SO2).I-sulphur dioxide iphinda ifakwe i-oxidized phantsi kwesenzo se-catalyst ukwenza i-sulphur trioxide (2SO2 + 02 = 2S03).I-SO3 kunye nomphunga wamanzi kwi-flue gas yenza umphunga we-sulfuric acid (SO3 + H2O = H2SO4).Ubukho bomphunga we-sulfuric acid kwandisa kakhulu indawo yombethe yegesi ye-flue.Ekubeni iqondo lokushisa lomoya kwi-preheater yomoya liphantsi, ubushushu begesi ye-flue kwicandelo le-preheater aliphezulu, kwaye iqondo lokushisa eludongeni lihlala liphantsi kune-flue gas dew point.Ngale ndlela, umphunga we-sulfuric acid uya kuxinana kumphezulu wokufudumeza we-air preheater, ubangele ukuhlwa kwe-asidi ye-sulfuric.Ukushisa okuphantsi kwe-corrosion kuhlala kusenzeka kwizifudumezi zomoya, kodwa xa isiqulatho sesulfure kumafutha siphezulu, i-coefficient yomoya egqithileyo inkulu, umxholo we-SO3 kwirhasi ye-flue uphezulu, indawo yombethe ye-asidi iyenyuka, kunye nobushushu bamanzi okutya ephantsi (i-injini yomoya ayisebenzi kwiqondo lobushushu eliphezulu), ityhubhu ye-economizer isenokuchaphazeleka kukuhlwa kobushushu obuphantsi.
Ibhoyila iqondo eliphantsi lokutya umhlwa
Ibhoyila yebhedi ejikeleziswayo yenkampani iye yasetyenziswa rhoqo kangangesithuba esingaphantsi konyaka, kwaye imibhobho emininzi kumbhobho osezantsi woqoqosho iye yachaphazeleka kukugqobhoza nokuvuza.I-boiler fuel ixutywe namalahle e-bituminous kunye ne-sludge, i-economizer tube material yintsimbi ye-20 (GB / T 3087-2008), kunye nobushushu bokungena kwe-economizer ngokuqhelekileyo bungaphantsi kwe-100 ° C.
Izizathu zokugqobhoza kunye nokuvuza kwetyhubhu ye-economizer zahlaziywa ngohlalutyo lokwakheka kwezinto, uvavanyo lwepropathi yomatshini, uhlalutyo lwe-metallographic, ukuskena i-electron microscope morphology kunye nohlalutyo lwe-spectrum yamandla, uhlalutyo lwesigaba se-X-ray, njl. Uhlalutyo lwafumanisa ukuba ityhubhu ye-economizer isebenza kwiqondo lokushisa eliphantsi, kwaye iimveliso ze-corrosion ziqulethe inani elikhulu le-S kunye ne-Cl elements.Udonga lwangaphandle lwetyhubhu ye-economizer luchaphazeleka kubushushu obuphantsi kobushushu obuphantsi kokusebenza kobushushu obuphantsi kunye nokubola kweasidi ngexesha lokuvalwa, nto leyo ekhokelela ekugcinweni kwamalahle.Umbhobho udlekile, unemingxuma kwaye uyavuza.
Amanyathelo okuthintela umhlwa obushushu obuphantsi
1. Yandisa ubushushu bodonga lwetyhubhu ye-preheater yomoya ukuze ubushushu bodonga buphakame kunendawo yombethe yerhasi ye-flue.
2. Izongezo kwi-flue gas ukuze i-neutralize SO3 kwaye ithintele ukuveliswa komphunga we-sulfuric acid.3. Sebenzisa imathiriyeli ekwaziyo ukumelana nobushushu obusezantsi ukwenza izifudumezi zomoya kunye nezoqoqosho.
4. Sebenzisa ukutshiswa kwe-oxygen ephantsi ukunciphisa i-oksijini engaphezulu kwi-flue gas kunye nokukhusela nokunciphisa ukuguqulwa kwe-SO2 kwi-SO3.
5. Ngokubona iqondo lobushushu bombethe we-asidi, indawo yombethe ye-asidi phantsi kweemeko ezithile zokusebenza inokwaziwa ngokuchanekileyo, ngaloo ndlela ilungelelanisa ubushushu begesi yokukhupha ukuphumeza ezona meko zilungileyo zokonga amandla kunye nokwandisa ubomi bebhoyila.
Ixesha lokuposa: Nov-30-2023
