Silicon Carbide FGD Nozzle no ka desulfurization i loko o ka mana

Nā Nozzles Absorber Flue Gas Desulfurization (FGD).
Ka wehe 'ana i ka sulfur oxides, i kapa 'ia 'o SOx, mai ke kinoea ho'opau me ka ho'ohana 'ana i ka reagent alkali, e like me ka limestone slurry pulu.

Ke hoʻohana ʻia nā wahie mōʻalihaku i nā kaʻina puhi ahi e holo i nā paila, umu ahi, a i ʻole nā ​​​​mea hana ʻē aʻe, hiki iā lākou ke hoʻokuʻu iā SO2 a i ʻole SO3 ma ke ʻano o ke kinoea hoʻopau. Hoʻopili maʻalahi kēia mau sulfur oxides me nā mea ʻē aʻe e hana i ka pūhui ʻino e like me ka sulfuric acid a hiki ke hoʻopilikia i ke olakino kanaka a me ke kaiapuni. Ma muli o kēia mau hopena kūpono, ʻo ka hoʻomalu ʻana i kēia pūhui i loko o nā kinoea flue he ʻāpana koʻikoʻi o nā mea kanu ahi ahi a me nā noi ʻoihana ʻē aʻe.

Ma muli o nā pilikia o ka erosion, plugging, a me ke kūkulu ʻana, ʻo kekahi o nā ʻōnaehana hilinaʻi e hoʻomalu ai i kēia mau hoʻokuʻu ʻana he kaʻina hana desulfurization (FGD) ma ka hoʻohana ʻana i ka limestone, lime hydrated, ke kai, a i ʻole ka hopena alkaline. Hiki i nā nozzles spray ke hoʻohele maikaʻi a hilinaʻi i kēia mau slurries i loko o nā hale kiaʻi absorption. Ma ka hana ʻana i nā hiʻohiʻona like ʻole o ka nui o nā droplets, hiki i kēia mau nozzles ke hana pono i ka ʻili o ka ʻili e pono ai no ka hoʻomohu pono ʻana me ka hōʻemi ʻana i ka hoʻokomo ʻana o ka mea holoi holoi i loko o ke kinoea.

Ke koho ʻana i kahi FGD Absorber Nozzle:
Nā mea nui e noʻonoʻo ai:

ʻO ka hoʻopaʻa ʻana a me ka viscosity
Ka nui droplet pono
Pono ka nui droplet kūpono e hōʻoia i ka nui o ka absorption
Mea nozzle
No ka mea he ʻino pinepine ke kinoea a me ka wai holoi ʻana he slurry me nā mea paʻa kiʻekiʻe a me nā waiwai abrasive, ʻo ke koho ʻana i ka corrosion kūpono a me ka lole pale ʻana he mea nui.
ʻO ke kū'ēʻana o ka nozzle
No ka mea he slurry pinepine ka wai holoi me nā mea paʻa kiʻekiʻe, he mea nui ke koho ʻana i ka nozzle e pili ana i ka pale ʻana.
ʻO ke ʻano hoʻoheheʻe nozzle a me ke kau ʻana
I mea e hōʻoia ai i ka absorption kūpono i ka uhi piha ʻana o ke kahawai kinoea me ke ala ʻole a he mea nui ka manawa noho.
Nozzle ka nui a me ke ʻano
Pono ka holo ʻana o ka wai holoi holoi
Hiki ke hāʻule kaomi (∆P) ma o ka nozzle
∆P = ke kaomi hoʻolako ʻana ma ka puka nozzle – kaʻina hana ma waho o ka nozzle
Hiki i kā mākou ʻenehana loea ke kōkua i ka hoʻoholo ʻana i ka nozzle e hana e like me ka makemake me kāu mau kikoʻī hoʻolālā
Hoʻohana maʻamau FGD Absorber Nozzle a me nā ʻoihana:
ʻO ka lanahu a me nā mea hoʻoheheʻe wahie fossil ʻē aʻe
Nā hale hoʻoheheʻe ʻaila
ʻO nā mea hoʻoheheʻe ʻōpala
Kiln sima
Nā mea hoʻoheheʻe metala

Pepa Ikepili Mea SiC

Nā hemahema me ka Lime/Limestone

E like me ka mea i hōʻike ʻia ma ke Kiʻi 1, ʻo nā ʻōnaehana FGD e hoʻohana ana i ka lime/limestone forced oxidation (LSFO) he ʻekolu sub-system nui:

• Hoʻomākaukau, mālama a mālama ʻana i ka reagent
• Waʻa hoʻopau
• ʻO ka ʻōpala a me ka mālama ʻana i nā huahana

ʻO ka hoʻomākaukau ʻana i ka reagent ka lawe ʻana i ka limestone i ʻoki ʻia (CaCO3) mai kahi silo mālama i kahi pahu hānai hoʻonāukiuki. ʻO ka hopena o ka limestone slurry a laila hoʻomoʻi ʻia i ka moku absorber me ke kinoea hoʻoheheʻe paila a me ka ea oxidizing. Hāʻawi nā nozzles pāpaʻi i nā kulu liʻiliʻi o ka reagent a laila e kahe kūʻē i ke kinoea ʻauheʻe e komo mai ana. Hoʻopili ka SO2 i loko o ke kinoea puhi me ka reagent waiwai nui e hana i ka calcium sulfite (CaSO3) a me CO2. ʻO ka ea i hoʻokomo ʻia i loko o ka absorber e hoʻoikaika i ka hoʻokahe ʻana o CaSO3 i CaSO4 (dihydrate form).

ʻO nā hopena LSFO kumu:

CaCO3 + SO2 → CaSO3 + CO2 · 2H2O

ʻOhi ka slurry oxidized i lalo o ka absorber a hoʻihoʻi hou ʻia me ka reagent hou i nā poʻo nozzle spray. Hoʻihoʻi ʻia kahi ʻāpana o ke kahawai hoʻihoʻi hou i ka ʻōnaehana hoʻohana ʻana i ka ʻōpala/byproduct, ka mea maʻamau i loko o nā hydrocyclones, pahu a kāʻei kānana, a me kahi pahu wai ʻona/waiʻona. Hoʻihoʻi hou ʻia ka wai ʻōpala mai ka pahu paʻa i ka pahu hānai limestone reagent a i ʻole i kahi hydrocyclone kahi e hoʻoneʻe ʻia ai ke kahe e like me ka effluent.

Maʻamau Lime/Limestone Forced Oxidatin Wet Scrubbing Process Schematic

Hiki i nā ʻōnaehana Wet LSFO ke hoʻokō i nā pono hoʻoneʻe SO2 o 95-97 pakeneka. ʻO ka hiki ʻana i nā pae ma luna o 97.5 pākēneka e hoʻokō i nā koi hoʻokuʻu ʻana, akā naʻe, paʻakikī, ʻoi loa no nā mea kanu e hoʻohana ana i nā lanahu kiʻekiʻe-sulfur. Hiki ke hoʻohui ʻia nā mea hoʻoheheʻe Magnesium a i ʻole ka limestone i ka lime reactivity kiʻekiʻe (CaO), akā ʻo ia mau hoʻololi e pili ana i nā mea kanu hou a me nā koina hana a me ka mana. No ka laʻana, pono ka calcining i ka lime e hoʻokomo i kahi kiln lime kaʻawale. Eia kekahi, hiki ke hoʻoheheʻe ʻia ka lime a hoʻonui kēia i ka hiki ke hoʻokumu i ka waiho ʻana i ka unahi i ka scrubber.

Hiki ke hoemiia ke kumukuai o ka calcination me ka lime kiln ma ka hookomo pono ana i ka limestone i loko o ka umu paila. Ma kēia ʻano, lawe ʻia ka lime i hana ʻia i loko o ka paila me ke kinoea flue i loko o ka scrubber. ʻO nā pilikia e pili ana i ka hoʻoheheʻe ʻana o ka paila, ke keakea ʻana i ka hoʻololi ʻana i ka wela, a me ka hana ʻole ʻana o ka lime ma muli o ke puhi ʻana o ka paila. Eia kekahi, hoʻemi ka lime i ke kahe kahe o ka lehu i hoʻoheheʻe ʻia i loko o nā boiler i puhi ʻia i ka lanahu, ka hopena i nā waihona paʻa i ʻole e hiki mai.

ʻO ka ʻōpala wai mai ke kaʻina hana LSFO ke kuhikuhi pinepine ʻia i nā loko hoʻopaʻa me ka ʻōpala wai mai nā wahi ʻē aʻe o ka hale mana. Hiki ke hoʻopiha ʻia ka wai wai wai FGD me nā pūhui sulfite a me ka sulfate a me ka noʻonoʻo ʻana i ke kaiapuni e kaupalena ʻia kona hoʻokuʻu ʻana i nā muliwai, nā kahawai a i ʻole nā ​​kahawai wai ʻē aʻe. Eia kekahi, ʻo ka hoʻihoʻi ʻana i ka wai ʻōpala/waiʻona i ka scrubber hiki ke alakaʻi i ke kūkulu ʻana i ka sodium dissolved, potassium, calcium, magnesium a i ʻole nā ​​paʻakai chloride. Hiki i kēia mau ʻano ke hoʻokalakupua inā ʻaʻole lawa ke koko e mālama i ka paʻakai i hoʻoheheʻe ʻia ma lalo o ka saturation. ʻO kekahi pilikia ʻē aʻe, ʻo ia ka lohi o ka hoʻopaʻa ʻana o nā ʻōpala paʻa, kahi e pono ai i nā loko hoʻopaʻa nui a me ka nui. Ma nā kūlana maʻamau, hiki ke loaʻa i ka papa i hoʻopaʻa ʻia i loko o kahi loko iʻa hoʻopaʻa ʻia he 50 pakeneka a ʻoi aku paha ka wai ma hope o kekahi mau mahina o ka mālama ʻana.

Hiki ke kiʻekiʻe ka calcium sulfate i hoʻihoʻi ʻia mai ka slurry recycle absorber i ka limestone a me ka lehu calcium sulfite. Hiki i kēia mau mea hoʻohaumia ke pale aku i ka calcium sulfate mai ke kūʻai ʻia ʻana ma ke ʻano he gypsum synthetic no ka hoʻohana ʻana i ka papa pā, ka plaster, a me ka hana sima. ʻO ka limestone i hana ʻole ʻia ka haumia nui i loaʻa i ka gypsum synthetic a he haumia maʻamau nō hoʻi ia i ka gypsum kūlohelohe (mined). ʻOiai ʻaʻole keʻakeʻa ka limestone ponoʻī i nā waiwai o nā huahana hope o ka wallboard, ʻo kāna mau mea abrasive ke hōʻike nei i nā pilikia ʻaʻahu no nā lako hana. ʻO ka calcium sulfite kahi haumia i makemake ʻole ʻia i kēlā me kēia gypsum no ka mea, ʻo ka nui o kāna ʻāpana liʻiliʻi e hoʻopiʻi i nā pilikia scaling a me nā pilikia hoʻoponopono ʻē aʻe e like me ka holoi keke a me ka wai.

Inā ʻaʻole kūʻai kūʻai ʻia nā mea paʻa i hana ʻia ma ke kaʻina hana LSFO e like me ka gypsum synthetic, he pilikia nui ka hoʻolei ʻōpala. No ka paila 1000 MW e puhi ana i 1 pakeneka sulfur lanahu, ʻo ka nui o ka gypsum ma kahi o 550 tons (pōkole) / lā. No ka mea kanu hoʻokahi e puhi ana i ka 2% sulfur lanahu, piʻi ka hana gypsum ma kahi o 1100 tons / lā. Hoʻohui ʻia he 1000 tons/lā no ka hana ʻana i ka lehu lele, lawe kēia i ka nui o ka ʻōpala paʻa i kahi 1550 tons/lā no ka pahu lanahu sulfur 1 pakeneka a me 2100 tons/lā no ka pahu sulfur 2 pakeneka.

Nā Pono EADS

ʻO kahi ʻenehana i hōʻoia ʻia i ka LSFO scrubbing e hoʻololi i ka limestone me ka amonia ma ke ʻano he reagent no ka wehe ʻana i ka SO2. Hoʻololi ʻia ka wili reagent paʻa, ka mālama ʻana, ka lawelawe ʻana a me nā mea lawe i loko o kahi ʻōnaehana LSFO e nā pahu mālama maʻalahi no ka ammonia wai a i ʻole anhydrous. Hōʻike ka Figure 2 i kahi schematic kahe no ka ʻōnaehana EADS i hāʻawi ʻia e JET Inc.

ʻO ka Ammonia, ka ʻeaea hoʻoheheʻe, ka ea oxidizing a me ka wai kaʻina hana e komo i loko o kahi mea hoʻoheheʻe i loaʻa nā pae he nui o nā nozzles spray. Hoʻopuka nā nozzles i nā kulu liʻiliʻi o ka reagent i loko o ka ammonia e hōʻoia i ka pili pili ʻana o ka reagent me ke kinoea hoʻolele e komo mai ana e like me kēia mau hopena:

(1) SO2 + 2NH3 + H2O → (NH4)2SO3

(2) (NH4)2SO3 + ½O2 → (NH4)2SO4

Hoʻopili ka SO2 i loko o ke kahawai kinoea me ka ammonia ma ka hapa luna o ka moku e hana i ka ammonium sulfite. ʻO ka lalo o ka moku absorber e like me ka pahu oxidation kahi e hoʻoneʻe ai ka ea i ka ammonium sulfite i ka ammonium sulfate. Hoʻopili ʻia ka hopena ammonium sulfate i nā poʻomanaʻo nozzle spray ma nā pae he nui i loko o ka mea hoʻoheheʻe. Ma mua o ka puka ʻana o ke kinoea i hoʻopaʻa ʻia i ka piko o ka mea hoʻoheheʻe, hele ia ma kahi demister e hoʻohui i nā kulu wai i komo a hopu i nā ʻāpana maikaʻi.

ʻO ka hopena ammonia me SO2 a me ka hoʻoheheʻe ʻana o ka sulfite i ka sulfate e loaʻa i kahi helu hoʻohana kiʻekiʻe. Hana ʻia ʻehā paona ammonium sulfate no kēlā me kēia paona amonia i ʻai ʻia.

E like me ke kaʻina hana LSFO, hiki ke hoʻihoʻi ʻia kahi ʻāpana o ke kahawai reagent/huahana hou e hana i kahi huahana pāʻoihana. Ma ka ʻōnaehana EADS, hoʻoheheʻe ʻia ka hopena o ka huahana i kahi ʻōnaehana hoʻihoʻi paʻa i loko o kahi hydrocyclone a me ka centrifuge e hoʻopaʻa i ka huahana ammonium sulfate ma mua o ka maloʻo ʻana a me ka hoʻopili ʻana. Hoʻihoʻi ʻia nā wai a pau (hydrocyclone overflow a centrifuge centrate) i kahi pahu slurry a laila hoʻokomo hou ʻia i loko o ke kahawai hoʻoheheʻe ammonium sulfate.

• Hāʻawi nā ʻōnaehana EADS i nā pono hoʻoneʻe SO2 kiʻekiʻe (> 99%), kahi e hāʻawi ai i nā mea mana ahi ahi i ʻoi aku ka maʻalahi e hoʻohui i nā lanahu sulfur kiʻekiʻe.
• ʻOiai e hana ana nā ʻōnaehana LSFO i 0.7 tons CO2 no kēlā me kēia tona o SO2 i wehe ʻia, ʻaʻohe CO2 i ka hana EADS.
• Ma muli o ka liʻiliʻi o ka lime a me ka limestone i ka hoʻohālikelike ʻana i ka ammonia no ka wehe ʻana i ka SO2, koi ʻia ka hoʻohana ʻana i ka wai kiʻekiʻe a me ka hoʻoheheʻe ʻana i ka ikehu no ka loaʻa ʻana o ka nui o ka holo ʻana. Loaʻa kēia i nā koina hana kiʻekiʻe no nā ʻōnaehana LSFO.
• ʻO nā kumukūʻai kumulāʻau no nā ʻōnaehana EADS e like me nā mea no ke kūkulu ʻana i kahi ʻōnaehana LSFO. E like me ka mea i hōʻike ʻia ma luna nei, ʻoiai ʻo ka ʻōnaehana EADS e koi ana i ka ammonium sulfate byproduct processing a me nā lako palaki, ʻaʻole koi ʻia nā keʻena hoʻomākaukau reagent e pili ana me LSFO no ka wili, ka lawelawe ʻana a me ka lawe ʻana.

ʻO ka pōmaikaʻi ʻokoʻa loa o EADS ʻo ka hoʻopau ʻana i nā ʻōpala wai a me nā ʻōpala paʻa. ʻO ka ʻenehana EADS he kaʻina hana ʻole-wai-discharge, ʻo ia hoʻi, ʻaʻole pono ka mālama wai ʻino. Hiki ke kūʻai aku i ka huahana ammonium sulfate paʻa; ʻO ka ammonia sulfate ka mea i hoʻohana nui ʻia a me ka mea hoʻomoʻa ma ka honua, me ka ulu ʻana o ka mākeke honua i manaʻo ʻia ma 2030. Eia kekahi, ʻoiai ka hana ʻana o ka ammonium sulfate e koi ai i kahi centrifuge, dryer, conveyer a me nā mea hoʻopili, ʻaʻole pono kēia mau mea a me ke kālepa. loaʻa. Ma muli o nā kūlana waiwai a me ka mākeke, hiki i ka mea hoʻomomona sulfate ke hoʻopau i nā kumukūʻai no ka hoʻoheheʻe ʻana i ka ʻeaea hoʻoheheʻe ammonia a hiki ke hāʻawi i kahi waiwai nui.

ʻO ke kaʻina hana desulfurization maikaʻi ʻo Ammonia

ʻO Shandong Zhongpeng Special Ceramics Co., Ltd kekahi o ka silicon carbide ceramic mea hoʻonā hou i Kina. ʻO ka ʻenehana loea SiC: ʻO 9 ka paʻakikī o Moh (ʻo 13 ka paʻakikī o New Moh), me ke kūpaʻa maikaʻi loa i ka erosion a me ka corrosion, abrasion maikaʻi loa - kūpaʻa a me ka anti-oxidation. ʻO ke ola lawelawe o ka huahana SiC he 4 a 5 mau manawa lōʻihi ma mua o 92% alumina mea. ʻO ka MOR o RBSiC he 5 a 7 mau manawa o ka SNBSC, hiki ke hoʻohana ʻia no nā ʻano paʻakikī. He wikiwiki ke kaʻina hana, ʻo ka hāʻawi ʻana e like me ka mea i ʻōlelo ʻia a ʻoi aku ka maikaʻi o ka lua. Hoʻomau mau mākou i ka hoʻokūkū i kā mākou mau pahuhopu a hāʻawi hou i ko mākou naʻau i ke kaiāulu.