Ka nānā 'ana i nā kumu no ka pilikia o ka gypsum dehydration
1 Ka aila paila a me ka puhi paʻa
Pono e hoʻopau i ka ʻaila hinu e kōkua i ka puhi ʻana i ka wā o ka hoʻomaka ʻana, ka pani ʻana, ka haʻahaʻa haʻahaʻa haʻahaʻa a me ka hoʻoponopono kiʻekiʻe ma muli o ka hoʻolālā ʻana a me ke ahi lanahu. Ma muli o ka paʻa ʻole o ka hana a me ka lawa ʻole o ka puhi ʻana i ka paila, e komo ka nui o ka aila i puhi ʻole ʻia a i ʻole ka hui ʻana o ka pauka ʻaila i loko o ka slurry absorber me ke kinoea. Ma lalo o ka hoʻohaunaele ikaika i ka absorber, he mea maʻalahi loa ia e hana i ka huʻa maikaʻi a hōʻiliʻili ma ka ʻili o ka slurry. ʻO kēia ka hoʻohui ʻana o ka ʻūhā ma ka ʻili o ka slurry absorber o ka mea kanu mana.
ʻOiai e hōʻiliʻili ana ka aila ma luna o ka ʻili o ka slurry, ua hoʻopuehu koke ʻia kahi ʻāpana i loko o ka slurry absorber ma lalo o ka launa pū ʻana o ka hoʻoulu ʻana a me ka pīpī ʻana, a ua hana ʻia kahi kiʻi ʻaila lahilahi ma ka ʻili o ka limestone, calcium sulfite a me nā mea ʻē aʻe i loko o ka slurry, kahi e hoʻopili ai i ka limestone a me nā mea ʻē aʻe, e pale ana i ka hoʻoheheʻe ʻana a me ka sulfite ma laila. ka pono desulfurization a me ka hana ʻana o ka gypsum. Hoʻokomo ka slurry hale kiaʻi ʻaila i loko o ka ʻōnaehana dehydration gypsum ma o ka pauma hoʻoheheʻe gypsum. Ma muli o ka loaʻa ʻana o ka aila a me nā huahana sulfurous acid incompletely oxidized, maʻalahi ia e hoʻopaʻa ʻia ke kāʻei kāʻei kāʻei kānana e hoʻopaʻa ʻia, e alakaʻi ana i nā pilikia i ka gypsum dehydration.
2.Ka Uhi Uhi ma ka Inlet
Loaʻa i ka hale kiaʻi desulfurization absorption kahi hopena hoʻoneʻe lepo synergistic, a hiki i kona hoʻopau ʻana i ka lepo ke hiki i kahi 70%. Hoʻolālā ʻia ka mana mana e loaʻa ka lepo o 20mg/m3 ma ka puka ʻohi lepo (desulfurization inlet). I mea e mālama ai i ka ikehu a hoʻemi i ka hoʻohana ʻana i ka uila mea kanu, ua hoʻomalu ʻia ka neʻe ʻana o ka lepo maoli ma ka puka ohi lepo ma kahi o 30mg/m3. Hoʻokomo ka lepo nui i ka hale kiaʻi absorption a hoʻoneʻe ʻia e ka synergistic dust removal effect o ka ʻōnaehana desulfurization. ʻO ka hapa nui o nā ʻāpana lepo e komo ana i ka hale kiaʻi absorption ma hope o ka hoʻomaʻemaʻe ʻana i ka lepo electrostatic ma lalo o 10μm, a i ʻole ma lalo o 2.5μm, ʻoi aku ka liʻiliʻi ma mua o ka nui o ka nui o ka gypsum slurry. Ma hope o ke komo ʻana o ka lepo i ka conveyor kāʻei ʻūhā me ka gypsum slurry, hoʻopaʻa ʻia hoʻi ia i ka lole kānana, ka hopena i ka maikaʻi ʻole o ka ea o ka lole kānana a paʻakikī i ka gypsum dehydration.
2. Ka hopena o ka maikaʻi o ka gypsum slurry
1 slurry ʻano nui
ʻO ka nui o ka slurry density e hōʻike ana i ka nui o ka slurry i loko o ka hale kiaʻi absorption. Inā he liʻiliʻi loa ka mānoanoa, ʻo ia hoʻi, he haʻahaʻa ka ʻike CaSO4 i loko o ka slurry a he kiʻekiʻe ka maʻi CaCO3, kahi e hoʻopau pololei ai i ka ʻōpala o CaCO3. I ka manawa like, ma muli o nā mea liʻiliʻi CaCO3, ua maʻalahi ke hana i nā pilikia dehydration gypsum; inā ʻoi aku ka nui o ka slurry density, ʻo ia ka mea he kiʻekiʻe ka CaSO4 ma loko o ka slurry. ʻO ka CaSO4 kiʻekiʻe e keʻakeʻa i ka hoʻoheheʻe ʻana o CaCO3 a keʻakeʻa i ka absorption o SO2. Hoʻokomo ʻo CaCO3 i ka ʻōnaehana wai maloʻo me ka slurry gypsum a pili pū i ka hopena dehydration o ka gypsum. No ka hāʻawi ʻana i ka pāʻani piha i nā pono o ka ʻōnaehana pālua pālua o ka desulfurization o ke kinoea flue, pono e hoʻomalu ʻia ka waiwai pH o ka hale kiaʻi mua i loko o ka laulā o 5.0±0.2, a pono e hoʻomalu ʻia ka slurry density i loko o ka laulā o 1100±20kg/m3. Ma ka hana maoli, ʻo ka slurry density o ka hale kiaʻi mua o ka mea kanu ma kahi o 1200kg / m3, a hiki i ka 1300kg / m3 i nā manawa kiʻekiʻe, i hoʻomalu mau ʻia ma kahi kiʻekiʻe.
2. Degere o ka oxidation ikaika o ka slurry
ʻO ka hoʻoneʻe ʻana o ka slurry e hoʻokomo i ka ea i loko o ka slurry e hoʻopau i ka hopena o ka calcium sulfite i ka hopena calcium sulfate, a ʻoi aku ka kiʻekiʻe o ka oxidation ma mua o 95%, e hōʻoia ana he nui nā ʻano gypsum i ka slurry no ka ulu aniani. Inā ʻaʻole lawa ka oxidation, e hana ʻia nā kristal hui ʻia o ka calcium sulfite a me ka calcium sulfate, e hoʻoulu ai i ka scaling. ʻO ke kiʻekiʻe o ka oxidation ikaika o ka slurry e pili ana i nā mea e like me ka nui o ka ea oxidation, ka manawa noho o ka slurry, a me ka hopena hoʻoulu ʻana o ka slurry. ʻAʻole lawa ka ea oxidation, pōkole ka manawa noho o ka slurry, ka puʻunaue like ʻole o ka slurry, a me ka hoʻoulu ʻana i ka hopena maikaʻi ʻole e hoʻonui i ka CaSO3·1/2H2O ma loko o ka hale kiaʻi. Hiki ke ʻike ʻia ma muli o ka lawa ʻole o ka oxidation kūloko, ʻoi aku ka kiʻekiʻe o ka CaSO3 · 1/2H2O i loko o ka slurry, e hopena i ka paʻakikī o ka gypsum dehydration a me ka ʻoi aku ka nui o ka wai.
3. Maʻiʻo haumia i loko o ka slurry ʻO nā mea haumia i loko o ka slurry ka nui mai ka flue gas a me ka limestone. Hoʻokumu kēia mau mea haumia i nā ion haumia i loko o ka slurry, e pili ana i ka hana lattice o gypsum. ʻO nā metala kaumaha e hoʻoheheʻe mau ʻia i ka uahi e keʻakeʻa i ka hopena o Ca2+ a me HSO3-. Ke kiʻekiʻe ka maʻiʻo o F- a me Al3+ i loko o ka slurry, e hana ʻia ka fluorine-aluminum complex AlFn, e uhi ana i ka ʻili o nā ʻāpana limestone, e hōʻeha ai i ka slurry poisoning, e hōʻemi ana i ka pono desulfurization, a hui pū ʻia nā ʻāpana limestone maikaʻi i loko o nā kristal gypsum i hoʻopau ʻole ʻia, e paʻakikī ai ka hoʻoheheʻe ʻana i ka wai. Loaʻa ka Cl- i ka slurry mai ka HCl i loko o ke kinoea a me ka wai hana. He ʻuʻuku ka Cl- i loko o ka wai kaʻina hana, no laila, ʻo ka Cl- in slurry ka mea i loaʻa mai ke kinoea puhi. Ke nui ka nui o Cl- i loko o ka slurry, e uhi ʻia ʻo Cl- e nā kristal a hui pū ʻia me kahi nui o Ca2+ i loko o ka slurry e hana i ka CaCl2 paʻa, e waiho ana i kahi nui o ka wai i loko o nā kristal. I ka manawa like, e mau ana ka nui o CaCl2 i loko o ka slurry ma waena o nā kristal gypsum, e ālai ana i ke kahawai wai manuahi ma waena o nā kristal, e hoʻonui ai i ka wai o ka gypsum.
3. Ka hopena o ke kūlana hana hana
1. Pūnaehana hoʻoheheʻe ʻana o Gypsum Hoʻomoʻi ʻia ka slurry gypsum i ka gypsum cyclone no ka hoʻomaloʻo mua ʻana ma o ka pauma hoʻokuʻu gypsum. Ke hoʻopaʻa ʻia ka slurry kahe o lalo i kahi maʻiʻo paʻa ma kahi o 50%, e kahe ana ia i ka conveyor kāʻei pahu no ka dehydration lua. ʻO nā kumu nui e pili ana i ka hopena hoʻokaʻawale ʻana o ka gypsum cyclone ʻo ia ke kaomi inlet cyclone a me ka nui o ke one settling nozzle. Inā haʻahaʻa loa ke kaomi inlet cyclone, ʻilihune ka hopena hoʻokaʻawale paʻa-wai, ʻoi aku ka liʻiliʻi o ka slurry kahe o lalo, e hoʻopilikia i ka hopena dehydration o ka gypsum a hoʻonui i ka ʻike wai; inā kiʻekiʻe loa ke kaomi inlet cyclone, e ʻoi aku ka maikaʻi o ka hopena o ka hoʻokaʻawale ʻana, akā e hoʻopilikia ia i ka hoʻokaʻawale ʻana o ka cyclone a hoʻopau i ka ʻaʻahu koʻikoʻi i nā mea hana. Inā ʻoi aku ka nui o ka nozzle hoʻonoho one, e hoʻemi ʻia ka slurry kahe o lalo a me nā mea liʻiliʻi liʻiliʻi, e hoʻopilikia i ka hopena dehydration o ka conveyor kāʻei ʻūhā.
ʻO ke kiʻekiʻe a i ʻole ka haʻahaʻa haʻahaʻa e pili ana i ka hopena dehydration gypsum. Inā haʻahaʻa loa ka vacuum, e hoʻemi ʻia ka hiki ke unuhi i ka makū mai ka gypsum, a ʻoi aku ka maikaʻi o ka hopena dehydration gypsum; inā kiʻekiʻe loa ka ʻōpala, hiki ke ālai ʻia nā āpau o ka lole kānana a i ʻole ke kāʻei ʻana i ke kāʻei, ʻo ia hoʻi ke alakaʻi i ka hopena dehydration gypsum. Ma lalo o nā kūlana hana like, ʻoi aku ka maikaʻi o ka ea permeability o ka lole kānana, ʻoi aku ka maikaʻi o ka hopena gypsum dehydration; inā he ʻilihune ka ea o ka lole kānana a paʻa ke kahawai kānana, ʻoi aku ka maikaʻi o ka hopena gypsum dehydration. He hopena koʻikoʻi ka mānoanoa keke kānana i ka gypsum dehydration. Ke emi ka māmā conveyor kāʻei, hoʻonui ka mānoanoa keke kānana, a nāwaliwali ka hiki i ka pahu pahu e unuhi i ka papa luna o ka kānana keke, e hoʻonui ai i ka maʻi gypsum moisture; i ka piʻi ʻana o ka wikiwiki conveyor kāʻei, emi ka mānoanoa keke kānana, kahi maʻalahi e hoʻokuʻu i ka leakage kānana kīʻaha kūloko, e luku ana i ka ʻōpala, a me ka hoʻonui ʻana i ka maʻi gypsum moisture.
2. ʻO ka hana maʻamau o ka ʻōnaehana mālama wai ʻino desulfurization a i ʻole ka nui o ka mālama wai ʻino liʻiliʻi e pili i ka hoʻokuʻu maʻamau o ka wai ʻōpala desulfurization. Ma lalo o ka hana lōʻihi, e hoʻomau nā haumia e like me ka uahi a me ka lepo i ka slurry, a me nā metala kaumaha, Cl-, F-, Al-, etc. Ke lawe nei i ka slurry Cl- ma ke ʻano he laʻana, ʻo ka Cl- maʻiʻo i loko o ka slurry o ka hale kiaʻi absorption mua o ka mea kanu mana he kiʻekiʻe e like me 22000mg/L, a hiki i ka Cl- ma loko o ka gypsum hiki i 0.37%. Ke 4300mg/L ka Cl- content i loko o ka slurry, ʻoi aku ka maikaʻi o ka hopena dehydration o ka gypsum. Ke piʻi aʻe nei ka nui o ka chloride ion, e emi mālie ka hopena dehydration o ka gypsum.
Nā hana hoʻomalu
1. E hoʻoikaika i ka hoʻoponopono puhi ʻana o ka hana ʻana o ka paila, hoʻemi i ka hopena o ka ʻaila ʻaila a me ka hoʻopau paʻa ʻana i ka ʻōnaehana desulfurization i ka wā o ka hoʻomaka ʻana a me ka pani ʻana o ka paila a i ʻole ka hana haʻahaʻa haʻahaʻa, e kāohi i ka nui o nā slurry circulation pumps i hoʻokomo ʻia i ka hana, a hoʻemi i ka haumia o ka hui ʻana o ka ʻaila pauka ʻole i ka slurry.
2. E noʻonoʻo ana i ka hana paʻa lōʻihi a me ka hoʻokele waiwai holoʻokoʻa o ka ʻōnaehana desulfurization, e hoʻoikaika i ka hoʻoponopono ʻana i ka hana o ka ʻohi lepo, e hoʻohana i ka hana hoʻohālikelike kiʻekiʻe, a me ka hoʻomalu ʻana i ka neʻe o ka lepo ma ka puka ʻohi lepo (desulfurization inlet) i loko o ka waiwai hoʻolālā.
3. Ka nānā 'ana i ka slurry density (mika slurry density), ka nui o ka ea oxidation, absorption tower wai pae (mika pae radar), slurry stirring device, etc. no ka hoʻokō ʻana i ka hopena desulfurization ma lalo o nā kūlana maʻamau.
4. E hoʻoikaika i ka mālama ʻana a me ka hoʻoponopono ʻana i ka gypsum cyclone a me ka mīkini kāʻei pahu, e hoʻomalu i ke kaomi inlet o ka gypsum cyclone a me ka degere o ka mea lawe kāʻei i loko o kahi kūpono kūpono, a nānā mau i ka cyclone, one settling nozzle a me ka lole kānana e hōʻoia i ka hana ʻana o nā mea hana i ke kūlana maikaʻi loa.
5. E hōʻoia i ka hana maʻamau o ka desulfurization wastewater lapaʻau nenoaiu, mau hoʻokuʻu i ka desulfurization wastewater, a hoemi i ka haumia maʻiʻo i loko o ka absorption hale kiaʻi slurry.
Ka hopena
He pilikia maʻamau ka paʻakikī o ka gypsum dehydration i nā lako desulfurization pulu. Nui nā mea e hoʻohuli ai, e koi ana i ka nānā ʻana a me ka hoʻoponopono ʻana mai nā ʻano he nui e like me ka media waho, nā kūlana hopena a me ke kūlana hana o nā mea hana. Ma ka hoʻomaopopo hohonu wale ʻana i ka mīkini hoʻonā desulfurization a me nā hiʻohiʻona o ka hana ʻana o nā mea hana a me ka hoʻomalu pono ʻana i nā ʻāpana hana nui o ka ʻōnaehana hiki ke hōʻoia i ka hopena dehydration o ka gypsum desulfurized.
Ka manawa hoʻouna: Feb-06-2025
