Silicon Carbide FGD Nozzle ye desulfurization mumagetsi chirimwa

Flue Gasi Desulfurization (FGD) Absorber Nozzles
Kubviswa kwe sulfur oxides, inowanzonzi SOx, kubva kune exhaust gasi uchishandisa alkali reagent, senge nyoro limestone slurry.

Kana mafuta efossil achishandiswa mukupisa kumhanyisa mabhailer, mavira, kana zvimwe midziyo vane mukana wekuburitsa SO2 kana SO3 sechikamu chegasi rekubuda. Aya sulfur oxides anoita zviri nyore nezvimwe zvinhu kuti agadzire komputa inokuvadza senge sulfuric acid uye ine mukana wekukanganisa hutano hwevanhu uye nharaunda. Nekuda kweizvi zvinogona kuitika, kutonga kwekomboni iyi mumagasi eflue chikamu chakakosha chemarasha anopisa magetsi zvidyarwa uye zvimwe zvinoshandiswa mumaindasitiri.

Nekuda kwekukukurwa, plugging, uye kuvaka-up zvinonetsa, imwe yeakanyanya kuvimbika masisitimu ekudzora kuburitswa uku ndeye yakavhurika-shongwe yemvura flue gasi desulfurization (FGD) maitiro uchishandisa limestone, hydrated lime, mvura yegungwa, kana imwe alkaline mhinduro. Kupfapfaidza nozzles vanokwanisa zvinobudirira uye nekuvimbika kugovera aya slurries mumashongwe ekunyudza. Nekugadzira yunifomu yemadonhwe akaenzana saizi, ma nozzles aya anokwanisa kugadzira zvinobudirira nzvimbo yepasi inodiwa kuti inyatso kunyudzwa uku ichideredza kupinzwa kwemhinduro yekukwesha mugasi reflue.

Kusarudza FGD Absorber Nozzle:
Zvinhu zvakakosha zvekufunga nezvazvo:

Kukwesha midhiya density uye viscosity
Inodiwa droplet size
Iyo chaiyo saizi yemadonhwe yakakosha kuti uve nechokwadi chekunyura kwakaringana
Nozzle zvinhu
Sezvo gasi reflue richigara richiita ngura uye mvura yekukwesha kazhinji ine slurry ine yakakwira solids content uye abrasive properties, kusarudza kwakakodzera ngura uye kupfeka zvinhu zvinodzivirira kwakakosha.
Nozzle clog resistance
Sezvo mvura yekukwesha ichiwanzoita slurry ine yakakwira solids zvirimo, kusarudzwa kwemuromo maererano nekudzivirira kuvharika kwakakosha.
Nozzle spray pattern uye kuiswa
Kuti uone kunyura kwakaringana kuvharika kwerukova rwegasi pasina nzira uye nguva yakakwana yekugara yakakosha.
Nozzle yekubatanidza saizi uye mhando
Zvinodiwa kukwesha fluid kuyerera rates
Inowanikwa kudonhedza kudonhedza (∆P) pamuromo wemuromo
∆P = kupa kudzvanywa pamhepo inopinza - gadzira kumanikidza kunze kwemuromo
Mainjiniya edu ane ruzivo anogona kubatsira kuona kuti ndeipi nozzle ichaita sezvinodiwa neruzivo rwako rwekugadzira
Zvakajairwa FGD Absorber Nozzle Mashandisiro uye maindasitiri:
Marasha nemamwe mafossil emagetsi emagetsi
Petroleum refineries
Municipal tsvina yekupisa
Kubira simende
Metal smelters

SiC Material Datasheet

Madhiri neLime/Limestone

Sezvinoratidzwa muFigure 1, FGD masisitimu anoshandisa lime/limestone anomanikidza oxidation (LSFO) anosanganisira matatu makuru madiki-system:

• Reagent kugadzirira, kubata uye kuchengetedza
• Absorber mudziyo
• Waste uye byproduct kubata

Kugadzirira kweReagent kunosanganisira kuendesa limestone yakapwanyika (CaCO3) kubva mudura rekuchengetedza kuenda kutangi inodyisa chikafu. Iyo inokonzeresa limestone slurry inozopomberwa kune inonyudza mudziyo pamwe neiyo boiler flue gasi uye oxidizing mweya. Spray nozzles inoburitsa madonhwe akanaka e reagent ayo anobva ayerera achipikisa kune iri kuuya flue gasi. Iyo SO2 mu flue gasi inopindirana ne calcium-rich reagent kuumba calcium sulfite (CaSO3) uye CO2. Mhepo inounzwa mumudziyo unosimudzira oxidation yeCaSO3 kuCaSO4 (dihydrate fomu).

Iwo ekutanga LSFO maitiro ndeaya:

CaCO3 + SO2 → CaSO3 + CO2 · 2H2O

Iyo oxidized slurry inounganidza muzasi meiyo inonyudza uye inozodzokororwa pamwe chete neiyo nyowani reagent kudzoka kune yekupfapfaidza nozzle misoro. Chikamu cherukova chinodzokororwa chinodzoserwa kune tsvina/byproduct yekubata system, iyo inowanzo sanganisira hydrocyclones, chigubhu kana bhandi mafirita, uye inoputika tsvina yemvura / doro rekubata tangi. Mvura yetsvina kubva mutangi inochengeterwa inodzokororwa ichidzoserwa ku limestone reagent feed tank kana kune hydrocyclone uko mafashama anobviswa setsvina.

Yakajairika Lime/Limestone Inomanikidzirwa Oxidatin Wet Scrubbing Process Schematic

Wet LSFO masisitimu kazhinji anogona kuwana SO2 yekubvisa efficiencies ye95-97 muzana. Kusvika mazinga ari pamusoro pe97.5 muzana kusangana nezvinodiwa zvekudzora kuburitsa, zvisinei, kwakaoma, kunyanya kuzvirimwa zvinoshandisa marasha akanyanya-sarufa. Magnesium catalysts inogona kuwedzerwa kana limestone inogona kuverengerwa kune yakakwira reactivity lime (CaO), asi shanduko dzakadaro dzinosanganisira yekuwedzera michina yekudyara uye inobatanidzwa yevashandi nemitengo yemagetsi. Semuenzaniso, kuita calcining kune lime kunoda kuiswa kwekasiyana lime kiln. Zvakare, lime inonaya zviri nyore uye izvi zvinowedzera mukana weiyo dhipoziti kuumbwa mune scrubber.

Mutengo wecalcination ine lime kiln inogona kudzikiswa nekupinza zvakananga limestone muchoto chebhailer. Nenzira iyi, lime inogadzirwa mubhailer inotakurwa neflue gasi kupinda muscrubber. Matambudziko anogona kuitika anosanganisira kusvibiswa kweboiler, kuvhiringidzwa nekutamisa kupisa, uye lime inactivation nekuda kwekupisa mubhailer. Uyezve, lime inoderedza kuyerera kwekushisa kwemadota akanyunguduka mumaboiler anopisa marasha, zvichiita kuti pave nedhipoziti yakasimba yaisazoitika.

Tsvina yemvura kubva kuLSFO process inowanzo kunanga kumadziva ekudzikamisa pamwe nemarara emvura kubva kumwe kunhu mumagetsi emagetsi. Iyo yakanyorova yeFGD fluid effluent inogona kuzara ne sulfite uye sulfate komisheni uye kufunga kwezvakatipoteredza kunowanzo dzikamisa kuburitswa kwayo kunzizi, hova kana dzimwe nzira dzemvura. Zvakare, kudzokorodza mvura yetsvina/doro kudzokera kuscrubber kunogona kutungamira mukuvakwa kweyakanyungudika sodium, potassium, calcium, magnesium kana chloride munyu. Mhuka idzi dzinogona kupedzisira dzapenya kunze kwekunge ropa rakakwana rapihwa kuchengetedza munyu wakanyungudika pasi pekuzara. Rimwe dambudziko nderokunonoka kugadzirisa chiyero chemarara, izvo zvinoguma nekudiwa kwemadziva makuru, epamusoro-soro ekudzikamisa. Mumamiriro ezvinhu akajairwa, iyo yakagadzikwa mudhamu yekudzikamisa inogona kuve ne50 muzana kana kupfuura chikamu chemvura kunyangwe mushure memwedzi yakati wandei yekuchengetedza.

Iyo calcium sulfate yakadzoserwa kubva kuabsorber recycle slurry inogona kunge yakakwira mune isina kubatwa limestone uye calcium sulfite ash. Izvi zvinosvibisa zvinogona kudzivirira calcium sulfate kubva kutengeswa sesynthetic gypsum kuti ishandiswe mumadziro, plaster, uye simende kugadzira. Limestone isina kubatwa ndiyo inonyanya kusvibiswa inowanikwa mukugadzirwa kwegypsum uye zvakare itsvina yakajairika mumasikirwo (mig) gypsum. Nepo limestone pachayo isingakanganise zvivakwa zvewallboard end zvigadzirwa, ayo abrasive zvimiro zviripo zvekupfeka zvekugadzira michina. Calcium sulfite kusachena kusingadiwe mune chero gypsum sezvo saizi yayo yakanaka inokonzeresa matambudziko ekuyera uye mamwe matambudziko ekugadzirisa akadai sekugeza keke nekubvisa mvura.

Kana iyo yakaoma inogadzirwa muchirongwa cheLSFO isiri kutengeswa sesynthetic gypsum, izvi zvinounza dambudziko rakakura rekurasa marara. Kune 1000 MW boiler inopfuta 1 muzana sarufa marasha, huwandu hwegypsum hunosvika mazana mashanu nemakumi mashanu matani (pfupi) pazuva. Kune imwechete chirimwa ichipfuta 2 muzana sarufa marasha, kugadzirwa kwegypsum kunowedzera kusvika panosvika zana negumi nemazana matani pazuva. Kuwedzera mamwe matani 1000 pazuva pakugadzirwa kwedota renhunzi, izvi zvinounza huwandu hwemarara hwakasimba kusvika kumatani 1550 pazuva pa1 muzana yemarasha esarufa uye 2100 matani pazuva pachikamu che2 muzana chesarufa.

EADS Zvakanakira

Iyo yakaratidza tekinoroji imwe nzira kune LSFO kukwesha inotsiva limestone neammonia seyakagadziriswa yekubvisa SO2. Iyo yakasimba reagent milling, kuchengetedza, kubata uye kutakura zvinhu muLSFO system inotsiviwa nematangi ekuchengetedza akareruka emvura kana anhydrous ammonia. Mufananidzo 2 unoratidza kuyerera schematic yeEADS system yakapihwa neJET Inc.

Ammonia, flue gasi, mweya weoxidizing uye mvura inoshandiswa inopinda mumudziyo une mazinga akawanda emvura yekupfapfaidza. Manozzles anogadzira madonhwe akanaka eammonia-ine reagent kuve nechokwadi chekubatana kwepedyo kweiyo reagent ine inouya flue gasi zvichienderana nekutevera maitiro:

(1) SO2 + 2NH3 + H2O → (NH4)2SO3

(2) (NH4)2SO3 + ½O2 → (NH4)2SO4

Iyo SO2 mune flue gasi stream inopindirana neammonia muhafu yepamusoro yemudziyo kuti ibudise ammonium sulfite. Pazasi pemudziyo wemudziyo unoshanda senge oxidation tangi apo mhepo inosanganisa ammonium sulfite kune ammonium sulfate. Iyo inokonzeresa ammonium sulfate mhinduro inopombwa ichidzoserwa kune yakapfapfaidza nozzle misoro pamatanho akati wandei mumudziyo wekunyudza. Isati yacherwa flue gasi ichibuda pamusoro pechinonyudza, inopfuura nepaburi rinobatanidza chero madonhwe emvura akavharirwa uye inobata zvidimbu zvakanaka.

Iyo ammonia reaction neSO2 uye iyo sulfite oxidation kune sulfate inowana yakakwira reagent kushandiswa mwero. Makirogiramu mana eammonium sulfate anogadzirwa paundi imwe neimwe yeammonia inopedzwa.

Sezvinei nemaitiro eLSFO, chikamu cheiyo reagent / chigadzirwa kudzokorora rukova chinogona kubviswa kuti chiburitse chekutengesa. Muchirongwa cheEADS, mhinduro yechigadzirwa chekutora inopombwa kune yakasimba kudzoreredza sisitimu inosanganisira hydrocyclone uye centrifuge kutarisisa iyo ammonium sulfate chigadzirwa isati yaomesa uye kurongedza. Zvese zvinwiwa (hydrocyclone mafashama uye centrifuge centrate) zvinonangidzirwa kumashure kune slurry tank uye zvino zvinounzwa zvakare mu absorber ammonium sulfate recycle stream.

• Masisitimu eEADS anopa epamusoro ekubvisa SO2 kushanda zvakanaka (> 99%), izvo zvinopa marasha-anobatidzwa magetsi zvidyarwa zvakanyanya kuchinjika kusanganisa akachipa, akakwira sarufa marasha.
• Nepo masisitimu eLSFO achigadzira matani 0.7 eCO2 patani yega yega yeSO2 yakabviswa, maitiro eEADS anoburitsa hapana CO2.
• Nekuti lime uye limestone hazvinyanyi kuita kana zvichienzaniswa neammonia yekubvisa SO2, yakakwira maitiro ekushandisa mvura uye simba rekupomba rinodikanwa kuti uwane yakakwirira yekutenderera. Izvi zvinoguma nemitengo yakakwira yekushandisa kune masisitimu eLSFO.
• Mari inodhura yeEADS masisitimu yakafanana neiyo yekuvaka iyo LSFO system. Sezvakataurwa pamusoro apa, nepo EADS system inoda ammonium sulfate byproduct processing uye kurongedza midziyo, zvivakwa zvekugadzirira reagent zvine chekuita neLSFO hazvidiwe pakugaya, kubata uye kutakura.

Kunyanya kusiyanisa mukana weEADS ndiko kubviswa kwezvose zviri mvura uye marara akasimba. Iyo tekinoroji yeEADS ndeye zero-mvura-inoburitsa maitiro, zvinoreva kuti hapana kurapwa kwemvura yetsvina kunodiwa. Iyo yakasimba ammonium sulfate byproduct inotengeswa nyore nyore; ammonia sulfate ndiyo inonyanya kushandiswa pasi rose, uye kukura kwemusika wepasi rose kunotarisirwa kusvika muna 2030. Pamusoro pezvo, nepo kugadzirwa kweammonium sulfate kuchida centrifuge, dryer, conveyer uye packaging equipment, zvinhu izvi hazvisi zvekutengesa uye zvekutengesa. iripo. Zvichienderana nehupfumi uye mamiriro emusika, iyo ammonium sulfate fetiraiza inogona kudzikamisa mutengo weammonia-based flue gasi desulfurization uye inogona kupa purofiti yakakura.

Inoshanda Ammonia Desulfurization Maitiro Schematic

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