Binciken dalilan da ke haifar da matsalolin bushewar gypsum
1 Ciyar da mai a cikin tukunya da kuma ƙonewa mai ƙarfi
Boilers masu amfani da wutar lantarki da ake amfani da gawayi suna buƙatar cinye mai mai yawa don taimakawa ƙonewa yayin farawa, rufewa, ƙonewa mai ƙarancin nauyi da kuma daidaita tsayin kololuwa saboda ƙira da ƙona kwal. Saboda rashin aiki mai kyau da rashin isasshen ƙonewa na tukunyar jirgi, mai yawa na man da ba a ƙone ba ko cakuda foda mai zai shiga cikin ruwan sha tare da iskar gas. A ƙarƙashin babban rikici a cikin mai sha, yana da sauƙi a samar da kumfa mai kyau da taruwa a saman ruwan sha. Wannan shine nazarin abun da ke ciki na kumfa a saman ruwan sha na tashar wutar lantarki.
Yayin da man ke taruwa a saman slurry ɗin, wani ɓangare nasa yana warwatse cikin sauri a cikin slurry mai ɗaukar ruwa a ƙarƙashin hulɗar juyawa da fesawa, kuma an samar da wani siririn fim ɗin mai a saman limestone, calcium sulfite da sauran barbashi a cikin slurry ɗin, wanda ke naɗe limestone da sauran barbashi, yana hana rushe limestone da kuma oxidation na calcium sulfite, wanda hakan ke shafar ingancin desulfurization da samuwar gypsum. Lurry ɗin hasumiyar shaye-shaye mai ɗauke da mai yana shiga tsarin bushewar gypsum ta hanyar famfon fitar da gypsum. Saboda kasancewar mai da samfuran acid sulfurous da ba su cika oxidized ba, yana da sauƙi a toshe gibin zane mai tace bel ɗin injin, wanda ke haifar da matsaloli wajen bushewar gypsum.
2.Tarin Hayaki a Inlet
Hasumiyar shaƙar danshi ta desulfurization tana da wani tasiri na cire ƙura mai haɗaka, kuma ingancin cire ƙura zai iya kaiwa kusan kashi 70%. An tsara tashar wutar lantarki don samun yawan ƙura na 20mg/m3 a wurin tattara ƙura (mashigar desulfurization). Domin adana kuzari da rage amfani da wutar lantarki a masana'antar, ana sarrafa ainihin yawan ƙura a wurin tattara ƙura a kusan 30mg/m3. Kura mai yawa tana shiga hasumiyar shaƙar kuma tasirin cire ƙura mai haɗaka na tsarin cire ƙura yana cire ta. Yawancin ƙura da ke shiga hasumiyar shaƙar bayan tsarkake ƙurar lantarki ba su wuce 10μm ba, ko ma ƙasa da 2.5μm, wanda ya fi ƙanƙanta fiye da girman ƙwayar gypsum slurry. Bayan ƙura ta shiga wurin jigilar bel ɗin injin tare da slurry na gypsum, tana kuma toshe zanen matatar, wanda ke haifar da rashin isasshen iska a cikin zanen matatar da wahala wajen bushewar gypsum.
2. Tasirin ingancin gypsum slurry
1 Yawan slurry
Girman yawan slurry yana nuna yawan slurry a cikin hasumiyar shaye-shaye. Idan yawan ya yi ƙanƙanta, yana nufin cewa yawan CaSO4 a cikin slurry ɗin ya yi ƙasa kuma yawan CaCO3 yana da yawa, wanda ke haifar da ɓatar CaCO3 kai tsaye. A lokaci guda, saboda ƙananan ƙwayoyin CaCO3, yana da sauƙi a haifar da wahalar bushewar gypsum; idan yawan slurry ya yi yawa, yana nufin cewa yawan CaSO4 a cikin slurry ɗin ya yi yawa. Mafi girman CaSO4 zai hana narkewar CaCO3 kuma ya hana sharar SO2. CaCO3 yana shiga tsarin bushewar iska tare da slurry na gypsum kuma yana shafar tasirin bushewar gypsum. Domin a ba da cikakken wasa ga fa'idodin tsarin zagayawa biyu na iskar gas mai danshi, ya kamata a sarrafa ƙimar pH na hasumiyar mataki na farko a cikin kewayon 5.0±0.2, kuma ya kamata a sarrafa yawan slurry ɗin a cikin kewayon 1100±20kg/m3. A zahiri, yawan slurry na hasumiyar mataki na farko na shuka yana da kusan 1200kg/m3, har ma yana kaiwa 1300kg/m3 a lokacin da yake da ƙarfi, wanda koyaushe ana sarrafa shi a babban matakin.
2. Matakin tilasta iskar shaka ta slurry
Iskar da ake tursasawa ta slurry ita ce a shigar da isasshen iska a cikin slurry don sa iskar da ke shiga cikin calcium sulfite zuwa calcium sulfate ta zama cikakke, kuma yawan iskar da ke shiga cikin slurry ya fi kashi 95%, wanda hakan ke tabbatar da cewa akwai isassun nau'ikan gypsum a cikin slurry don girma kristal. Idan iskar da ke shiga bai isa ba, za a samar da lu'ulu'u masu hade da calcium sulfite da calcium sulfate, wanda hakan ke haifar da scaling. Matsayin iskar da ke shiga cikin slurry ya dogara ne akan abubuwa kamar adadin iskar da ke shiga cikin slurry, lokacin zama slurry, da tasirin motsawar slurry. Rashin isasshen iskar da ke shiga cikin slurry, gajeren lokacin zama na slurry, rarraba slurry mara daidaituwa, da mummunan tasirin motsawa duk zasu sa abun cikin CaSO3·1/2H2O a cikin hasumiya ya yi yawa. Ana iya ganin cewa saboda rashin isasshen iskar da ke shiga cikin gida, abun da ke shiga cikin CaSO3·1/2H2O a cikin slurry ya fi girma sosai, wanda ke haifar da wahala ga bushewar gypsum da kuma yawan ruwa.
3. Rashin tsafta a cikin slurry Rashin tsafta a cikin slurry galibi yana fitowa ne daga iskar gas da farar ƙasa. Waɗannan ƙazanta suna samar da ions na ƙazanta a cikin slurry, suna shafar tsarin lattice na gypsum. Ƙarfe masu nauyi da ke narkewa a cikin hayaki koyaushe zai hana amsawar Ca2+ da HSO3-. Lokacin da abun ciki na F- da Al3+ a cikin slurry ya yi yawa, za a samar da hadaddun fluorine-aluminum AlFn, wanda ke rufe saman barbashi na farar ƙasa, yana haifar da gubar slurry, yana rage ingancin desulfurization, kuma ana haɗa ƙananan barbashi na farar ƙasa a cikin lu'ulu'u na gypsum waɗanda ba su cika aiki ba, wanda hakan ke sa ya yi wuya a fitar da ruwa daga gypsum. Cl-in slurry galibi yana fitowa ne daga HCl a cikin iskar gas da sarrafa ruwa. Abun Cl- a cikin ruwan sarrafawa ƙarami ne, don haka Cl-in slurry galibi yana fitowa ne daga iskar gas. Lokacin da akwai babban adadin Cl-in slurry, Cl- za a naɗe shi da lu'ulu'u kuma a haɗa shi da wani adadin Ca2+ a cikin slurry don samar da CaCl2 mai karko, yana barin wani adadin ruwa a cikin lu'ulu'u. A lokaci guda, wani adadin CaCl2 a cikin slurry zai kasance tsakanin lu'ulu'u na gypsum, wanda ke toshe hanyar samun ruwa kyauta tsakanin lu'ulu'u, wanda ke haifar da ƙaruwar ruwan gypsum.
3. Tasirin yanayin aikin kayan aiki
1. Tsarin bushewar iskar gas na Gypsum, ana tura sinadarin Gypsum slurry zuwa gypsum cyclone don bushewar iska ta farko ta hanyar famfon fitar da iskar gas na gypsum. Lokacin da aka tattara sinadarin Gypsum na ƙasa zuwa wani abu mai ƙarfi na kusan kashi 50%, yana kwarara zuwa ga mai ɗaukar bel ɗin iskar gas don bushewar iska ta biyu. Babban abubuwan da ke shafar tasirin rabuwar iskar gas na gypsum sune matsin lamba na shiga cyclone da girman bututun yashi. Idan matsin lamba na shiga cyclone ya yi ƙasa sosai, tasirin rabuwar iskar gas da ruwa ba zai yi kyau ba, slurry na ƙasa zai yi ƙasa da ƙarfi, wanda zai shafi tasirin bushewar iskar gas na gypsum da ƙara yawan ruwa; idan matsin lamba na shiga cyclone ya yi yawa, tasirin rabuwar iskar zai fi kyau, amma zai shafi ingancin rarrabuwar iskar gas kuma ya haifar da lalacewa mai tsanani ga kayan aiki. Idan girman bututun yashi ya yi girma sosai, zai kuma sa slurry na ƙasa ya kasance ƙasa da ƙarfi da ƙananan barbashi, wanda zai shafi tasirin bushewar iskar gas na mai ɗaukar bel ɗin iskar gas.
Gilashin da ya yi yawa ko kuma ya yi ƙasa sosai zai shafi tasirin bushewar gypsum. Idan injin ya yi ƙasa sosai, ikon cire danshi daga gypsum zai ragu, kuma tasirin bushewar gypsum zai yi muni; idan injin ya yi yawa, gibin da ke cikin zanen matattara na iya toshewa ko kuma bel ɗin zai iya karkacewa, wanda hakan kuma zai haifar da mummunan tasirin bushewar gypsum. A ƙarƙashin irin wannan yanayin aiki, mafi kyawun iskar da ke cikin zanen matattara, mafi kyawun tasirin bushewar gypsum; idan iskar da ke cikin zanen matattara ta yi ƙasa sosai kuma tashar tacewa ta toshe, tasirin bushewar gypsum zai yi muni. Kauri na kek ɗin matattara kuma yana da tasiri mai mahimmanci akan bushewar gypsum. Lokacin da saurin jigilar bel ya ragu, kauri na kek ɗin matattara yana ƙaruwa, kuma ikon famfon matattara na cire saman kek ɗin matattara yana raguwa, wanda ke haifar da ƙaruwar danshi a cikin gypsum; lokacin da saurin jigilar bel ya ƙaru, kauri na kek ɗin matattara yana raguwa, wanda ke da sauƙin haifar da zubewar kek ɗin matattara na gida, yana lalata injin, kuma yana haifar da ƙaruwar danshi a cikin gypsum.
2. Rashin aiki yadda ya kamata na tsarin tsaftace ruwan shara ko ƙaramin adadin ruwan shara zai shafi fitar da ruwan shara na desulfurization na yau da kullun. A ƙarƙashin aiki na dogon lokaci, ƙazanta kamar hayaki da ƙura za su ci gaba da shiga cikin ruwan shara, kuma ƙarfe masu nauyi, Cl-, F-, Al-, da sauransu a cikin ruwan shara za su ci gaba da wadata, wanda ke haifar da ci gaba da lalacewar ingancin ruwan shara, yana shafar ci gaban aikin desulfurization na yau da kullun, samuwar gypsum da bushewar ruwa. Idan aka ɗauki ruwan shara na Cl- in a matsayin misali, yawan Cl- a cikin ruwan shara na hasumiyar shara ta matakin farko na tashar wutar lantarki yana da girman 22000mg/L, kuma yawan Cl- a cikin gypsum ya kai 0.37%. Lokacin da yawan Cl- a cikin ruwan shara ya kai kimanin 4300mg/L, tasirin bushewar gypsum ya fi kyau. Yayin da yawan chloride ion ke ƙaruwa, tasirin bushewar gypsum a hankali yana raguwa.
Matakan sarrafawa
1. Ƙarfafa daidaita konewa na aikin tukunyar jirgi, rage tasirin allurar mai da ƙonewa mai ƙarfi akan tsarin cire sulfur yayin farawa da matakin rufe tukunyar jirgi ko aikin rage nauyi, sarrafa adadin famfunan zagayawa na slurry da ake amfani da su, da kuma rage gurɓatar cakuda foda mai da ba a ƙone ba zuwa slurry.
2. Idan aka yi la'akari da dorewar aiki na dogon lokaci da kuma tattalin arzikin tsarin rage yawan kura, a ƙarfafa daidaita aikin tattara kura, a rungumi aiki mai girma, sannan a kula da yawan ƙura a wurin tattara kura (mashigar cire kura) a cikin ƙimar ƙira.
3. Sa ido a ainihin lokaci kan yawan slurry (mita mai yawa na slurry), yawan iskar oksidation, matakin ruwa na hasumiyar sha (mita matakin radar), na'urar motsa slurry, da sauransu don tabbatar da cewa an gudanar da aikin desulfurization a ƙarƙashin yanayi na yau da kullun.
4. Ƙarfafa kulawa da daidaita na'urar ɗaukar gypsum cyclone da vacuum bel, sarrafa matsin lamba na shiga na gypsum cyclone da matakin injin ɗaukar bel a cikin iyaka mai dacewa, kuma a riƙa duba cyclone, bututun yashi da zane mai tacewa akai-akai don tabbatar da cewa kayan aikin suna aiki a cikin mafi kyawun yanayi.
5. Tabbatar da aiki na yau da kullun na tsarin maganin ruwan sharar gida na desulfurization, a riƙa fitar da ruwan sharar gida na desulfurization akai-akai, da kuma rage ƙazanta a cikin ruwan sharar hasumiyar sharar gida.
Kammalawa
Matsalar bushewar gypsum matsala ce da aka saba fuskanta a cikin kayan aikin cire danshi. Akwai abubuwa da yawa masu tasiri, waɗanda ke buƙatar cikakken bincike da daidaitawa daga fannoni da yawa kamar kafofin watsa labarai na waje, yanayin amsawa da yanayin aikin kayan aiki. Sai ta hanyar fahimtar tsarin amsawar desulfurization da halayen aikin kayan aiki da kuma sarrafa manyan sigogin aiki na tsarin cikin hikima ne kawai za a iya tabbatar da tasirin bushewar gypsum ɗin desulfurized.
Lokacin Saƙo: Fabrairu-06-2025
