Kusanthula zifukwa zomwe zimayambitsa mavuto a kusowa madzi m'thupi pogwiritsa ntchito gypsum
1 Kudyetsa mafuta a boiler ndi kuyaka kokhazikika
Ma boiler opanga magetsi opangidwa ndi malasha amafunika kugwiritsa ntchito mafuta ambiri kuti athandize kuyaka panthawi yoyatsa, kuzimitsa, kuyaka kosasunthika komanso kulamulira bwino kwambiri chifukwa cha kapangidwe kake komanso kuyaka kwa malasha. Chifukwa cha kusagwira ntchito bwino komanso kuyaka kosakwanira kwa boiler, mafuta ambiri osayaka kapena ufa wa mafuta adzalowa mu slurry ya absorber ndi mpweya wotuluka. Pansi pa kusokonezeka kwakukulu mu absorber, n'zosavuta kupanga thovu laling'ono ndikusonkhana pamwamba pa slurry. Uku ndi kusanthula kwa kapangidwe ka thovu pamwamba pa slurry ya absorber ya plant yamagetsi.
Pamene mafuta akusonkhana pamwamba pa matope, gawo lake limafalikira mwachangu mu matope onyamulira pansi pa kusakaniza ndi kupopera, ndipo filimu yopyapyala yamafuta imapangidwa pamwamba pa miyala yamchere, calcium sulfite ndi tinthu tina mu matope, yomwe imakulunga miyala yamchere ndi tinthu tina, kulepheretsa kusungunuka kwa miyala yamchere ndi okosijeni wa calcium sulfite, motero zimakhudza bwino ntchito ya desulfurization ndi kapangidwe ka gypsum. Dothi lonyamulira mafuta lomwe lili ndi tower absorption limalowa mu gypsum dehydration system kudzera mu gypsum discharge pump. Chifukwa cha kukhalapo kwa mafuta ndi zinthu zopangidwa ndi sulfurous acid zomwe sizimasungunuka mokwanira, n'zosavuta kupangitsa kuti mpata wa nsalu yonyamulira vacuum belt conveyor conveyor utsekeke, zomwe zimapangitsa kuti pakhale zovuta pakuchepa kwa madzi m'madzi m'madzi.
2.Kuchuluka kwa Utsi pa Malo Olowera
Nsanja yonyowa yochotsa fumbi imakhala ndi mphamvu yochotsa fumbi, ndipo mphamvu yake yochotsa fumbi imatha kufika pafupifupi 70%. Malo opangira magetsi adapangidwa kuti akhale ndi fumbi la 20mg/m3 pamalo otulutsira fumbi (malo olowera fumbi). Pofuna kusunga mphamvu ndikuchepetsa kugwiritsa ntchito magetsi a fakitale, kuchuluka kwa fumbi komwe kumatulutsa fumbi kumayendetsedwa pa 30mg/m3. Fumbi lochulukirapo limalowa mu nsanja yoyamwitsa ndipo limachotsedwa ndi mphamvu yochotsa fumbi yogwirizana ya dongosolo lochotsa fumbi. Tinthu tambiri ta fumbi tomwe timalowa mu nsanja yoyamwitsa pambuyo poyeretsa fumbi la electrostatic ndi tochepera 10μm, kapena tochepera 2.5μm, zomwe ndi zazing'ono kwambiri kuposa kukula kwa tinthu ta gypsum slurry. Fumbi litalowa mu vacuum lamba conveyor ndi gypsum slurry, limatsekanso nsalu yosefera, zomwe zimapangitsa kuti nsalu yosefera isalowe bwino komanso kuti gypsum isamafe.
2. Mphamvu ya gypsum slurry quality
1 Kuchuluka kwa matope
Kukula kwa kuchuluka kwa slurry kumasonyeza kuchuluka kwa slurry mu nsanja yoyamwitsa. Ngati kuchuluka kwake kuli kochepa kwambiri, zikutanthauza kuti kuchuluka kwa CaSO4 mu slurry ndi kochepa ndipo kuchuluka kwa CaCO3 ndi kwakukulu, zomwe zimayambitsa mwachindunji kutaya kwa CaCO3. Nthawi yomweyo, chifukwa cha tinthu tating'onoting'ono ta CaCO3, n'zosavuta kuyambitsa mavuto a gypsum dehydration; ngati kuchuluka kwa slurry ndi kwakukulu kwambiri, zikutanthauza kuti kuchuluka kwa CaSO4 mu slurry ndi kwakukulu. CaSO4 yokwera idzalepheretsa kusungunuka kwa CaCO3 ndikuletsa kuyamwa kwa SO2. CaCO3 imalowa mu vacuum dehydration system ndi gypsum slurry komanso imakhudzanso zotsatira za gypsum dehydration. Kuti ipereke bwino ubwino wa double-tower double-circulation system ya wet flue gas desulfurization, pH ya nsanja yoyamba iyenera kulamulidwa mkati mwa 5.0±0.2, ndipo kuchuluka kwa slurry kuyenera kulamulidwa mkati mwa 1100±20kg/m3. Pakugwira ntchito kwenikweni, kuchuluka kwa matope a nsanja yoyamba ya chomera ndi pafupifupi 1200kg/m3, ndipo kumafika ngakhale 1300kg/m3 nthawi zambiri, zomwe nthawi zonse zimayendetsedwa pamlingo wapamwamba.
2. Mlingo wa okosijeni wokakamizidwa wa slurry
Kukakamizidwa kwa okosijeni wa slurry ndiko kuyika mpweya wokwanira mu slurry kuti okosijeni wa calcium sulfite ku calcium sulfate reaction ikhale yokwanira, ndipo kuchuluka kwa okosijeni kumakhala kokwera kuposa 95%, kuonetsetsa kuti pali mitundu yokwanira ya gypsum mu slurry kuti kristalo ikule. Ngati okosijeni sikokwanira, makristalo osakanikirana a calcium sulfite ndi calcium sulfate adzapangidwa, zomwe zimapangitsa kukula. Mlingo wa okosijeni wa slurry umatengera zinthu monga kuchuluka kwa mpweya wa okosijeni, nthawi yokhala ya slurry, ndi mphamvu yosonkhezera ya slurry. Mpweya wosakwanira wa okosijeni, nthawi yochepa kwambiri yokhala ya slurry, kugawa kosagwirizana kwa slurry, ndi mphamvu yosakanikirana bwino zonsezi zimapangitsa kuti CaSO3·1/2H2O ikhale yokwera kwambiri. Zitha kuwoneka kuti chifukwa cha kusakwanira kwa okosijeni wapafupi, kuchuluka kwa CaSO3·1/2H2O mu slurry kumakhala kwakukulu kwambiri, zomwe zimapangitsa kuti gypsum isamasuke komanso madzi ambiri.
3. Kuchuluka kwa chidetso mu matope Kuchuluka kwa chidetso mu matope kumachokera ku mpweya wa flue ndi miyala yamchere. Zonyansa zimenezi zimapangitsa kuti ma ayoni odetsedwa mu matope, zomwe zimakhudza kapangidwe ka gypsum. Zitsulo zolemera zomwe zimasungunuka nthawi zonse mu utsi zimaletsa momwe Ca2+ ndi HSO3- zimachitira. Pamene kuchuluka kwa F- ndi Al3+ mu matope kuli kochuluka, AlFn yopangidwa ndi fluorine-aluminium idzapangidwa, kuphimba pamwamba pa tinthu ta miyala yamchere, zomwe zimayambitsa poizoni wa matope, kuchepetsa mphamvu ya desulfurization, ndipo tinthu ta miyala yamchere timasakanizidwa mu makristasi a gypsum omwe sanagwirizane bwino, zomwe zimapangitsa kuti zikhale zovuta kuipitsa madzi mu gypsum. Cl-in slurry makamaka imachokera ku HCl mu mpweya wa flue ndi madzi opangira. Cl- yomwe ili mu madzi opangira ndi yaying'ono, kotero Cl-in slurry makamaka imachokera ku mpweya wa flue. Pakakhala kuchuluka kwa Cl-in slurry, Cl- idzakulungidwa ndi makhiristo ndikuphatikizidwa ndi kuchuluka kwa Ca2+ mu slurry kuti ipange CaCl2 yokhazikika, ndikusiya madzi ena m'makhiristo. Nthawi yomweyo, kuchuluka kwa CaCl2 mu slurry kudzatsala pakati pa makhiristo a gypsum, kutseka njira ya madzi omasuka pakati pa makhiristo, zomwe zimapangitsa kuti madzi a gypsum achuluke.
3. Mphamvu ya momwe zida zimagwirira ntchito
1. Dongosolo la madzi oundana la Gypsum Slurry ya Gypsum imapopedwa kupita ku gypsum cyclone kuti madzi ayambe kutuluka kudzera mu gypsum discharge pump. Pamene madzi oundana pansi akhazikika kufika pa 50%, imapita ku vacuum lamba conveyor kuti madzi ayambe kutuluka. Zinthu zazikulu zomwe zimakhudza kusiyana kwa gypsum cyclone ndi kuthamanga kwa madzi oundana ndi kukula kwa mchenga wozungulira. Ngati kuthamanga kwa madzi oundana kuli kotsika kwambiri, kusiyana kwa madzi oundana kudzakhala kochepa, madzi oundana pansi adzakhala ndi madzi ochepa, zomwe zidzakhudza madzi oundana a gypsum ndikuwonjezera kuchuluka kwa madzi; ngati kuthamanga kwa madzi oundana kuli kokwera kwambiri, kusiyana kudzakhala bwino, koma kudzakhudza momwe madzi amagwirira ntchito bwino ndikupangitsa kuti zipangizo ziwonongeke kwambiri. Ngati kukula kwa mchenga wozungulira ndi kwakukulu kwambiri, kudzapangitsanso kuti madzi oundana pansi akhale ndi madzi ochepa komanso tinthu tating'onoting'ono, zomwe zidzakhudza madzi oundana a vacuum lamba conveyor.
Vacuum yokwera kwambiri kapena yotsika kwambiri idzakhudza mphamvu ya gypsum yotaya madzi. Ngati vacuum yotsika kwambiri, mphamvu yotulutsa chinyezi kuchokera ku gypsum idzachepa, ndipo mphamvu ya gypsum yotaya madzi idzakhala yoipa kwambiri; ngati vacuum yokwera kwambiri, mipata mu nsalu yosefera ikhoza kutsekedwa kapena lamba ikhoza kusokonekera, zomwe zingayambitsenso mphamvu ya gypsum yotaya madzi. Pansi pa mikhalidwe yomweyi yogwirira ntchito, mpweya wolowera bwino wa nsalu yosefera, mphamvu ya gypsum yotaya madzi idzakhala yabwino kwambiri; ngati mpweya wolowera wa nsalu yosefera ndi wochepa ndipo njira yosefera yatsekedwa, mphamvu ya gypsum yotaya madzi idzakhala yoipa kwambiri. Kukhuthala kwa keke yosefera kumakhudzanso kwambiri kusowa madzi kwa gypsum. Pamene liwiro la conveyor la lamba likuchepa, makulidwe a keke yosefera amawonjezeka, ndipo mphamvu ya pampu yotulutsa mpweya wotulutsa pamwamba pa keke yosefera imachepa, zomwe zimapangitsa kuti chinyezi cha gypsum chiwonjezeke; pamene liwiro la conveyor la lamba likuwonjezeka, makulidwe a keke yosefera amachepa, zomwe zimakhala zosavuta kuyambitsa kutuluka kwa keke yosefera m'deralo, kuwononga vacuum, komanso kuchititsa kuti chinyezi cha gypsum chiwonjezeke.
2. Kugwira ntchito kosazolowereka kwa njira yochotsera madzi otayika kapena kuchuluka kochepa kwa madzi otayika kudzakhudza kutuluka kwabwinobwino kwa madzi otayika. Pakagwiritsidwa ntchito kwa nthawi yayitali, zinyalala monga utsi ndi fumbi zidzapitirira kulowa mu matope, ndipo zitsulo zolemera, Cl-, F-, Al-, ndi zina zotero mu matope zidzapitirira kuwonjezeka, zomwe zimapangitsa kuti khalidwe la matope liwonongeke mosalekeza, zomwe zimakhudza kupita patsogolo kwabwinobwino kwa desulfurization reaction, kupanga gypsum ndi kutaya madzi. Potengera matope a Cl-in mwachitsanzo, Cl- yomwe ili mu matope a nsanja yoyamba yoyamwa ya fakitole yamagetsi imakhala yokwera kufika pa 22000mg/L, ndipo Cl- yomwe ili mu gypsum imafika pa 0.37%. Pamene Cl- yomwe ili mu matope ili pafupifupi 4300mg/L, zotsatira za matope a gypsum zimakhala bwino. Pamene kuchuluka kwa chloride ion kumawonjezeka, zotsatira za matope a gypsum zimachepa pang'onopang'ono.
Njira zowongolera
1. Limbikitsani kusintha kwa kuyaka kwa ntchito ya boiler, kuchepetsa mphamvu ya jakisoni wa mafuta ndi kuyaka kokhazikika pa dongosolo lochotsa sulfur panthawi yoyambira ndi kutseka kwa boiler kapena ntchito yochepa, kuwongolera kuchuluka kwa mapampu oyendera slurry omwe agwiritsidwa ntchito, ndikuchepetsa kuipitsa kwa ufa wa mafuta osapsa ku slurry.
2. Poganizira za ntchito yokhazikika kwa nthawi yayitali komanso chuma chonse cha dongosolo lochotsa sulfurization, limbitsani kusintha kwa ntchito ya wosonkhanitsa fumbi, gwiritsani ntchito magwiridwe antchito apamwamba, ndikuwongolera kuchuluka kwa fumbi pamalo otulutsira fumbi (malo olowera sulfurization) mkati mwa mtengo wopangidwira.
3. Kuwunika nthawi yeniyeni kuchuluka kwa slurry (mita yoyezera kuchuluka kwa slurry), kuchuluka kwa mpweya wothira okosijeni, mulingo wa madzi a nsanja yoyamwa (mita ya radar), chipangizo chosakaniza matope, ndi zina zotero kuti zitsimikizire kuti njira yochotsera sulfurization ikuchitika pansi pa mikhalidwe yabwinobwino.
4. Limbikitsani kukonza ndi kusintha kwa gypsum cyclone ndi vacuum lamba wonyamulira, wongolerani mphamvu yolowera ya gypsum cyclone ndi mlingo wa vacuum wa lamba wonyamulira mkati mwa msinkhu woyenera, ndikuyang'ana nthawi zonse cyclone, mchenga wotsekereza nozzle ndi nsalu yosefera kuti muwonetsetse kuti zida zikugwira ntchito bwino.
5. Onetsetsani kuti njira yoyeretsera madzi otayira ikugwira ntchito bwino, nthawi zonse mutulutse madzi otayira ...
Mapeto
Kuvuta kwa gypsum kusowa madzi m'thupi ndi vuto lofala kwambiri pazida zonyowa zochotsera sulfur. Pali zinthu zambiri zomwe zimakhudza, zomwe zimafuna kusanthula kwathunthu ndikusintha kuchokera kuzinthu zosiyanasiyana monga zoulutsira zakunja, momwe zinthu zimachitikira komanso momwe zida zimagwirira ntchito. Pokhapokha pomvetsetsa bwino momwe zimagwirira ntchito zochotsera sulfurization ndi mawonekedwe a zida ndikulamulira bwino magawo akuluakulu ogwirira ntchito a dongosololi, mphamvu ya gypsum yochotsera sulfur ikhoza kutsimikizika.
Nthawi yotumizira: Feb-06-2025
