Uhlalutyo lwezizathu zobunzima be-gypsum dehydration
1 I-oyile ye-boiler yokutya kunye nokutsha okuzinzileyo
Iibhoyila zokuvelisa amandla ngamalahle kufuneka zitye isixa esikhulu se-oyile ye-oyile ukunceda ukutsha ngexesha lokuqalisa, ukuvalwa, ukutshisa okuzinzile komthwalo ophantsi kunye nommiselo onzulu wencopho ngenxa yoyilo kunye nokutshiswa kwamalahle. Ngenxa yokusebenza okungazinzanga kunye nokutsha okungonelanga kwebhoyili, inani elikhulu leoli engatshiswanga okanye umxube we-oil powder uya kungena kwi-absorber slurry kunye ne-flue gas. Ngaphantsi kokuphazamiseka okunamandla kwi-absorber, kulula kakhulu ukwenza i-foam efanelekileyo kwaye iqokelele phezu kwe-slurry. Olu luhlalutyo lokubunjwa kwe-foam kumphezulu we-absorber slurry yesityalo samandla.
Ngelixa ioli iqokelela phezu komphezulu we-slurry, inxalenye yayo ichithwa ngokukhawuleza kwi-absorber slurry phantsi kwentsebenziswano yokuvuselela kunye nokutshiza, kwaye ifilimu yeoli encinci yenziwe phezu kwe-limestone, i-calcium sulfite kunye namanye amasuntswana kwi-slurry, esongela i-limestone kunye namanye amasuntswana, ethintela ukuchithwa kwe-calcium oxite kunye ne-limestone ephazamisayo. ukusebenza kakuhle kwe-desulfurization kunye nokwakhiwa kwegypsum. I-oil-containing absorption tower slurry ingena kwi-gypsum dehydration system ngokusebenzisa ipompo yokukhupha i-gypsum. Ngenxa yobukho be-oyile kunye neemveliso ze-asidi yesulfure, kulula ukubangela ukuba i-vacuum ibhanti yokuhambisa i-gap yelaphu ivalwe, nto leyo ekhokelela kubunzima kwi-gypsum dehydration.
2.Ukugxila komsi kwindawo yokungena
Inqaba yokufunxa emanzi ye-desulfurization inesiphumo esithile sokususa uthuli lwe-synergistic, kunye nokusebenza kakuhle kokususa uthuli kunokufikelela malunga ne-70%. Isityalo samandla senzelwe ukuba sibe nothuli lwe-20mg / m3 kwindawo yokuqokelela uthuli (i-desulfurization inlet). Ukuze ulondoloze amandla kunye nokunciphisa ukusetyenziswa kombane wezityalo, ugxininiso lwangempela lothuli kwindawo yokuqokelela uthuli lulawulwa malunga ne-30mg / m3. Uthuli olugqithisileyo lungena kwinqaba yokufunxa kwaye lususwe yi-synergistic ukususwa kothuli lwenkqubo ye-desulfurization. Uninzi lwamasuntswana othuli angena kwinqaba yokufunxa emva kokucocwa kothuli lwe-electrostatic lungaphantsi kwe-10μm, okanye nangaphantsi kwe-2.5μm, elincinane kakhulu kunobungakanani besuntswana le-gypsum slurry. Emva kokuba uthuli lungene kwibhanti yokucoca nge-gypsum slurry, iphinda ithintele ilaphu lokucoca, okubangela ukungahambi kakuhle komoya kwelaphu lokucoca kunye nobunzima bokuphelelwa ngamanzi kwegypsum.
2. Impembelelo yomgangatho we-gypsum slurry
1 Ubuninzi be-Slurry
Ubungakanani bokuxinana kwe-slurry bubonisa ubuninzi be-slurry kwinqaba yokufunxa. Ukuba ukuxinana kuncinci kakhulu, kuthetha ukuba umxholo weCaSO4 kwi-slurry uphantsi kwaye umxholo weCaCO3 uphezulu, obangela ngokuthe ngqo inkunkuma yeCaCO3. Ngelo xesha, ngenxa yeencinci ezincinci zeCaCO3, kulula ukubangela ubunzima be-gypsum dehydration; ukuba ubuninzi be-slurry bukhulu kakhulu, oko kuthetha ukuba umxholo we-CaSO4 kwi-slurry uphezulu. I-CaSO4 ephezulu iya kuthintela ukuchithwa kwe-CaCO3 kwaye inqanda ukufunxwa kwe-SO2. I-CaCO3 ingena kwi-vacuum dehydration system kunye ne-gypsum slurry kwaye ichaphazela umphumo wokuphelelwa ngamanzi emzimbeni we-gypsum. Ukuze unikeze umdlalo ogcweleyo kwiinzuzo zenkqubo yokujikeleza kabini kwe-double-tower ye-wet flue gas desulfurization, ixabiso le-pH lenqanaba lokuqala kufuneka lilawulwe phakathi koluhlu lwe-5.0 ± 0.2, kwaye ubuninzi be-slurry kufuneka balawulwe ngaphakathi koluhlu lwe-1100 ± 20kg / m3. Ekusebenzeni kwangempela, ukuxinana kwe-slurry kwinqaba yesigaba sokuqala sesityalo malunga ne-1200kg / m3, kwaye ide ifike kwi-1300kg / m3 ngamaxesha aphezulu, ahlala elawulwa kwinqanaba eliphezulu.
2. Iqondo lokunyanzeliswa kwe-oxidation ye-slurry
Ukunyanzeliswa kwe-oxidation ye-slurry kukungenisa umoya owaneleyo kwi-slurry ukwenza i-oxidation ye-calcium sulfite ukuya kwi-calcium sulfate reaction ithande ukugqitywa, kwaye izinga le-oxidation lingaphezulu kwe-95%, ukuqinisekisa ukuba kukho iindidi ezaneleyo ze-gypsum kwi-slurry yokukhula kwekristale. Ukuba i-oxidation ayanelanga, iikristale ezixubeneyo ze-calcium sulfite kunye ne-calcium sulfate ziya kuveliswa, okubangela ukulinganisa. Iqondo lokunyanzeliswa kwe-oxidation yodaka lixhomekeke kwizinto ezifana nobuninzi bomoya we-oxidation, ixesha lokuhlala lodaka, kunye nefuthe elishukumisayo lodaka. Umoya ongonelanga we-oxidation, ixesha elifutshane kakhulu lokuhlala le-slurry, ukusabalalisa okungalinganiyo kwe-slurry, kunye nefuthe elibi lokuvuselela konke kuya kubangela ukuba umxholo we-CaSO3 · 1/2H2O kwinqaba ube phezulu kakhulu. Ingabonwa ukuba ngenxa yokungonelanga kwe-oxidation yendawo, umxholo we-CaSO3 · 1/2H2O kwi-slurry uphezulu kakhulu, obangela ubunzima kwi-gypsum dehydration kunye nomxholo ophezulu wamanzi.
3. Isiqulatho sobumdaka kubudaka Ukungcola okuseludaka ubukhulu becala kuvela kwirhasi yeflue kunye ne-limestone. Ezi zinto zingcolileyo zenza i-ion zokungcola kwi-slurry, ezichaphazela isakhiwo se-lattice ye-gypsum. Iintsimbi ezinzima ezihlala zinyibilika kumsi ziya kuthintela ukusabela kwe-Ca2 + kunye ne-HSO3-. Xa umxholo we-F- kunye ne-Al3 + kwi-slurry iphezulu, i-fluorine-aluminium eyinkimbinkimbi i-AlFn iya kuveliswa, igubungele ubuso be-limestone, ibangele i-slurry poisoning, ukunciphisa ukusebenza kakuhle kwe-desulfurization, kunye neengqungquthela ezintle ze-limestone zixutywe kwiikristale ze-gypsum ezingaphendulwanga, okwenza kube nzima ukukhupha i-gypsum. I-Cl- in slurry ivela ikakhulu kwi-HCl kwigesi yombane kunye namanzi okucoca. Isiqulatho esikwinkqubo yamanzi sincinci, ngoko ke i-Cl- in slurry iphuma ikakhulu kwigesi yombane. Xa kukho ubuninzi be-Cl-in slurry, i-Cl- iya kugqunywa ngamakristale kwaye idibaniswe nenani elithile le-Ca2 + kwi-slurry ukwenza i-CaCl2 ezinzileyo, ishiye inani elithile lamanzi kwiikristale. Ngexesha elifanayo, inani elithile le-CaCl2 kwi-slurry liya kuhlala phakathi kweekristale ze-gypsum, ukuvimba umjelo wamanzi akhululekile phakathi kweekristale, okubangela ukuba umthamo wamanzi we-gypsum unyuke.
3. Impembelelo yobume bokusebenza kwesixhobo
1. I-Gypsum dehydration system I-Gypsum slurry impontshelwa kwi-cyclone ye-gypsum ukuze i-primary dehydration ngokusebenzisa i-gypsum discharge pump. Xa i-slurry ehamba ngaphantsi igxininiswe kumxholo oqinileyo malunga ne-50%, igeleza kwi-vacuum belt conveyor ukwenzela ukungabikho kwamanzi okwesibini. Izinto eziphambili ezichaphazela umphumo wokuhlukana kwe-gypsum cyclone yi-cyclone inlet yoxinzelelo kunye nobukhulu bombhobho wokumisa isanti. Ukuba i-cyclone inlet ye-inlet iphantsi kakhulu, umphumo wokuhlukana okuqinileyo-ulwelo luya kuba lubi, i-slurry flow flow ephantsi iya kuba nomxholo oqinileyo ongaphantsi, oya kuchaphazela umphumo we-dehydration we-gypsum kunye nokwandisa umthamo wamanzi; ukuba uxinzelelo lwe-inlet ye-cyclone luphezulu kakhulu, umphumo wokwahlula uya kuba ngcono, kodwa uya kuchaphazela ulwahlulo olusebenzayo lwenkanyamba kwaye lubangele ukuguga okukhulu kwisixhobo. Ukuba ubungakanani bombhobho wokumisa isanti bukhulu kakhulu, kuya kubangela ukuba i-slurry ephantsi ibe nomxholo oqinileyo ongaphantsi kunye namasuntswana amancinci, okuya kuchaphazela umphumo wokuphelelwa ngamanzi kwamanzi okuhambisa ibhanti.
I-vacuum ephezulu kakhulu okanye ephantsi kakhulu iya kuchaphazela umphumo we-gypsum dehydration. Ukuba i-vacuum iphantsi kakhulu, ukukwazi ukukhupha umswakama kwi-gypsum kuya kuncitshiswa, kwaye umphumo we-gypsum dehydration uya kuba mbi kakhulu; ukuba i-vacuum iphezulu kakhulu, izikhewu kwilaphu lokucoca zinokuvaleka okanye ibhanti inokutenxa, nto leyo eya kukhokelela kwisiphumo esibi kakhulu se-gypsum dehydration. Ngaphantsi kweemeko ezifanayo zokusebenza, ngcono ukunyanzeliswa komoya kwelaphu lokucoca, ngcono i-gypsum dehydration effect; ukuba ukunyanzeliswa komoya kwelaphu lokucoca kubi kwaye umjelo wokucoca uvaliwe, umphumo we-gypsum dehydration uya kuba mbi. Ubunzima bekeyiki yokucoca bunempembelelo ebalulekileyo kwi-gypsum dehydration. Xa isantya sokuhambisa ibhanti sincipha, ukutyeba kwekhekhe lokucoca kuyanda, kwaye ukukwazi kwempompo ye-vacuum ukukhupha umaleko ongaphezulu wekhekhe lokucoca kubuthathaka, okukhokelela ekunyukeni kobumanzi be-gypsum; xa isantya sokuhambisa ibhanti sinyuka, ubukhulu bekhekhe lokucoca luyancipha, olulula ukubangela ukuvuza kwekeyiki yokucoca yasekhaya, ukutshabalalisa i-vacuum, kwaye kubangele ukwanda kokufuma kwe-gypsum.
2. Ukusebenza okungaqhelekanga kwenkqubo yokucoca amanzi amdaka e-desulfurization okanye umthamo omncinci wokucoca amanzi amdaka uya kuchaphazela ukukhutshwa okuqhelekileyo kwamanzi amdaka e-desulfurization. Ngaphantsi kokusebenza kwexesha elide, ukungcola okunjengomsi kunye nothuli kuya kuqhubeka kungena kwi-slurry, kunye nezinyithi ezinzima, i-Cl-, F-, Al-, njl njl kwi-slurry iya kuqhubeka ityebisa, okubangelwa ukuwohloka okuqhubekayo komgangatho we-slurry, okuchaphazela inkqubela eqhelekileyo yokuphendula kwe-desulfurization, ukubunjwa kwe-gypsum kunye nokuphelelwa ngamanzi emzimbeni. Ukuthatha i-Cl- in slurry njengomzekelo, i-Cl- content kwi-slurry yenqanaba lokuqala lokufunxa inqaba yeplanti yamandla iphezulu njenge-22000mg / L, kwaye i-Cl- content kwi-gypsum ifikelela kwi-0.37%. Xa i-Cl- content kwi-slurry imalunga ne-4300mg / L, umphumo wokuphela kwamanzi we-gypsum ungcono. Njengoko umxholo we-chloride ion ukhula, umphumo wokuphela kwamanzi we-gypsum uyancipha ngokuthe ngcembe.
Amanyathelo okulawula
1. Yomeleza uhlengahlengiso lokutshiswa kokusebenza kwebhoyila, ukunciphisa ifuthe lenaliti yeoli kunye nokutsha okuzinzileyo kwinkqubo ye-desulfurization ngexesha lokuqalisa kunye nokuvalwa kwenqanaba lebhoyila okanye umsebenzi ophantsi komthwalo, lawula inani leempompo zokujikeleza kwe-slurry ezibekwe ekusebenzeni, kunye nokunciphisa ukungcoliswa komxube we-oyile ongatshiyo womgubo kwi-slurry.
2. Ukuqwalasela umsebenzi ozinzileyo wexesha elide kunye noqoqosho olupheleleyo lwenkqubo ye-desulfurization, ukuqinisa ukulungiswa komsebenzi womqokeleli wothuli, ukwamkela ukusebenza kweparameter ephezulu, kunye nokulawula ukugxininiswa kothuli kwindawo yokuqokelela uthuli (i-desulfurization inlet) ngaphakathi kwexabiso loyilo.
3. Ukuhlolwa kwexesha lokwenyani lokuxinana kodaka (imitha yobuninzi bodaka), umthamo womoya we-oxidation, umgangatho wolwelo wenqaba (imitha yenqanaba leradar), isixhobo sokuvuselela i-slurry, njl.njl ukuqinisekisa ukuba ukusabela kwe-desulfurization kwenziwa phantsi kweemeko eziqhelekileyo.
4. Ukuqinisa ukugcinwa kunye nokulungiswa kwe-gypsum cyclone kunye ne-vacuum belt conveyor, lawula ukunyanzeliswa kwe-inlet ye-gypsum cyclone kunye ne-vacuum degree ye-belt conveyor ngaphakathi koluhlu olufanelekileyo, kwaye uhlolisise rhoqo i-cyclone, i-santi yokumisa i-nozzle kunye ne-filter cloth ukuqinisekisa ukuba isixhobo sisebenza kwimeko efanelekileyo.
5. Qinisekisa ukusebenza okuqhelekileyo kwenkqubo yokucoca amanzi amdaka e-desulfurization, ukukhupha rhoqo amanzi amdaka e-desulfurization, kunye nokunciphisa umxholo wokungcola kwi-absorption tower slurry.
Ukuqukumbela
Ubunzima be-gypsum dehydration yingxaki eqhelekileyo kwizixhobo ezimanzi ze-desulfurization. Kukho izinto ezininzi ezinempembelelo, ezifuna uhlalutyo olubanzi kunye nohlengahlengiso oluvela kwiinkalo ezininzi ezifana nemidiya yangaphandle, iimeko zokusabela kunye nesimo sokusebenza kwezixhobo. Kuphela ngokuqonda ngokunzulu indlela yokusabela kwe-desulfurization kunye neempawu zokusebenza kwezixhobo kunye nokulawula ngokufanelekileyo iiparitha eziphambili zokusebenza kwenkqubo inokuqinisekiswa umphumo wokuphelelwa ngamanzi emzimbeni we-gypsum desulfurized.
Ixesha lokuposa: Feb-06-2025
