Silicon Carbide FGD Nozzle don desulfurization a cikin wutar lantarki

Ƙarƙashin Gas na Flue Gas (FGD) Nozzles
Cire sulfur oxides, wanda aka fi sani da SOx, daga iskar iskar gas ta amfani da reagent na alkali, kamar rigar farar ƙasa slurry.

Lokacin da aka yi amfani da burbushin mai a cikin hanyoyin konewa don sarrafa tukunyar jirgi, tanda, ko wasu kayan aiki suna da yuwuwar sakin SO2 ko SO3 a matsayin wani ɓangare na iskar gas. Wadannan sulfur oxides suna amsawa cikin sauƙi tare da wasu abubuwa don samar da fili mai cutarwa kamar sulfuric acid kuma suna da yuwuwar yin mummunan tasiri ga lafiyar ɗan adam da muhalli. Saboda waɗannan tasirin tasirin, sarrafa wannan fili a cikin iskar hayaƙi wani muhimmin sashi ne na masana'antar wutar lantarki da sauran aikace-aikacen masana'antu.

Sakamakon zaizayar ƙasa, toshewa, da haɓaka haɓakawa, ɗayan mafi amintattun tsarin sarrafa waɗannan hayaƙi shine tsarin buɗaɗɗen buɗaɗɗen buɗaɗɗen buɗaɗɗen buɗaɗɗen iskar gas (FGD) ta amfani da farar ƙasa, lemun tsami, ruwan teku, ko sauran maganin alkaline. Fesa nozzles suna iya yadda ya kamata kuma a dogara da su rarraba waɗannan slurries cikin hasumiya masu sha. Ta hanyar ƙirƙira nau'ikan nau'ikan ɗigon digo masu girma da kyau, waɗannan nozzles suna iya ƙirƙirar yanayin da ake buƙata yadda yakamata don shayarwa da kyau yayin da rage haɓakar maganin gogewa a cikin iskar hayaƙi.

Zabar FGD Absorber Nozzle:
Muhimman abubuwan da ya kamata a yi la'akari:

Scrubbing yawan kafofin watsa labarai da danko
Girman digo da ake buƙata
Madaidaicin girman digo yana da mahimmanci don tabbatar da ƙimar sha mai kyau
Kayan bututun ƙarfe
Kamar yadda iskar hayaki yakan kasance mai lalacewa kuma ruwan gogewa akai-akai yana slurry tare da babban abun ciki mai ƙarfi da kaddarorin abrasive, zaɓin da ya dace da lalata da sa kayan juriya yana da mahimmanci.
Nozzle toshe juriya
Kamar yadda ruwan gogewa akai-akai slurry ne tare da babban abun ciki mai ƙarfi, zaɓin bututun ƙarfe dangane da juriya yana da mahimmanci.
Nozzle spray model da jeri
Don tabbatar da ingantaccen ɗaukar cikakken ɗaukar hoto na rafin iskar gas ba tare da wucewa ba kuma isasshen lokacin zama yana da mahimmanci
Girman haɗin bututun ƙarfe da nau'in
Matsakaicin kwararar ruwa da ake buƙata
Akwai raguwar matsa lamba (∆P) a fadin bututun ƙarfe
∆P = matsin lamba a mashigar bututun ƙarfe - aiwatar da matsa lamba a waje bututun ƙarfe
Gogaggun injiniyoyinmu na iya taimakawa wajen tantance ko wane bututun ƙarfe zai yi kamar yadda ake buƙata tare da cikakkun bayanan ƙirar ku
Amfani da Masana'antu da Masana'antu na FGD gama gari:
Kwal da sauran masana'antar wutar lantarki
Matatun mai
Incinerators na sharar gida
Siminti kilns
Ƙarfe smelters

SiC Material Datasheet

Matsaloli tare da Lemun tsami/Limestone

Kamar yadda aka nuna a hoto na 1, tsarin FGD masu amfani da lemun tsami/limestone tilasta iskar shaka (LSFO) sun haɗa da manyan ƙananan tsarin guda uku:

• Shirye-shiryen reagent, kulawa da ajiya
• Jirgin ruwan sha
• Sharar gida da sarrafa kayan aiki

Shirye-shiryen reagent ya ƙunshi isar da dutsen farar ƙasa (CaCO3) daga silo na ajiya zuwa tankin abinci mai tayar da hankali. Sakamakon slurry na farar ƙasa ana yin famfo a cikin jirgin ruwa mai ɗaukar ruwa tare da iskar bututun hayaƙi da iskar oxidizing. Fesa nozzles suna isar da ɗigon digo na reagent mai kyau wanda sannan yana gudana ba tare da jurewa ba zuwa iskar hayaƙi mai shigowa. SO2 a cikin iskar hayaki yana amsawa tare da reagent mai arzikin calcium don samar da calcium sulfite (CaSO3) da CO2. Iskar da aka gabatar a cikin abin sha yana inganta iskar shaka na CaSO3 zuwa CaSO4 (dihydrate form).

Asalin halayen LSFO sune:

CaCO3 + SO2 → CaSO3 + CO2 · 2H2O

Bakin da aka yi da oxidized yana tattarawa a cikin ƙasan abin sha kuma daga baya ana sake yin fa'ida tare da sabon reagent baya ga masu bututun bututun fesa. An janye wani yanki na rafin sake fa'ida zuwa tsarin sarrafa sharar gida/ta hanyar sarrafawa, wanda yawanci ya ƙunshi hydrocyclones, drum ko bel filters, da tanki mai cike da ruwan sha da barasa. Ana sake sake yin amfani da ruwan sha daga tankin riƙon zuwa tankin abinci na reagent na farar ƙasa ko kuma zuwa wani hydrocyclone inda aka cire ambaliya a matsayin mai zubewa.

Hannun Lemun tsami/Tsarin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙarƙashin Ƙaƙwalwar Tsari

Rigar tsarin LSFO yawanci na iya cimma nasarar kawar da SO2 na kashi 95-97. Samun matakan sama da kashi 97.5 don biyan buƙatun sarrafa hayaƙi, duk da haka, yana da wahala, musamman ga tsire-tsire masu amfani da garwashin sulfur. Ana iya ƙara abubuwan haɓakawa na Magnesium ko kuma ana iya ƙididdige dutsen farar ƙasa zuwa lemun tsami mafi girma (CaO), amma irin waɗannan gyare-gyare sun haɗa da ƙarin kayan aikin shuka da haɗin gwiwar aiki da farashin wuta. Misali, calcining zuwa lemun tsami yana buƙatar shigar da wani keɓaɓɓen kiln lemun tsami. Har ila yau, lemun tsami yana raguwa da sauri kuma wannan yana ƙara yuwuwar samuwar sikelin ajiya a cikin goge.

Za a iya rage farashin kirgawa tare da kiln lemun tsami ta hanyar allurar farar ƙasa kai tsaye a cikin tanderun tukunyar jirgi. Ta wannan hanyar, ana ɗaukar lemun tsami da aka samar a cikin tukunyar jirgi tare da iskar gas ɗin a cikin goge. Matsalolin masu yuwuwa sun haɗa da lalata tukunyar jirgi, tsoma baki tare da canja wurin zafi, da rashin kunna lemun tsami saboda yawan ƙonewa a cikin tukunyar jirgi. Haka kuma, lemun tsami yana rage zafin narkakkar ash a cikin tukunyar tukunyar kwal, wanda ke haifar da daskararrun adibas da ba za su faru ba.

Sharar gida daga tsarin LSFO yawanci ana ba da umarni zuwa tafkuna masu daidaitawa tare da sharar ruwa daga wani wuri a cikin tashar wutar lantarki. Ruwan FGD mai jika zai iya zama cike da sulfite da mahadi sulfate kuma la'akari da muhalli yawanci yana iyakance sakin sa zuwa koguna, koguna ko wasu magudanan ruwa. Har ila yau, sake amfani da ruwan sha / barasa zuwa ga gogewa zai iya haifar da ginawar sodium, potassium, calcium, magnesium ko chloride salts. Waɗannan nau'ikan na iya yin kyalkyali a ƙarshe sai dai idan an samar da isasshen jini don kiyaye narkar da gishirin gishiri a ƙasa. Wata ƙarin matsala ita ce jinkirin daidaitawa na daskararru, wanda ke haifar da buƙatar manyan tafkuna masu ƙarfi masu ƙarfi. A cikin yanayi na yau da kullun, shimfidar wuri a cikin tafki mai daidaitawa zai iya ƙunsar kashi 50 ko fiye da lokacin ruwa ko da bayan watanni da yawa na ajiya.

Calcium sulfate da aka dawo dashi daga slurry mai juye juye zai iya zama babban dutsen farar ƙasa da ba a yi ba da ash sulfite. Waɗannan gurɓatattun abubuwa na iya hana siyar da sinadarin calcium sulfate azaman gypsum ɗin roba don amfani da allon bango, filasta, da siminti. Dutsen farar ƙasa wanda ba a yi shi ba shine ƙazanta mafi girma da ake samu a cikin gypsum na roba kuma shi ma ƙazanta ce ta gama gari a cikin gypsum na halitta (mined). Yayin da dutsen farar ƙasa da kansa ba ya tsoma baki tare da kaddarorin samfuran ƙarshen allo, ƙayyadaddun kaddarorin sa suna gabatar da al'amurran lalacewa don sarrafa kayan aiki. Calcium sulfite shine ƙazanta da ba'a so a cikin kowane gypsum saboda girman ɓangarorin sa yana haifar da matsalolin ƙima da sauran matsalolin sarrafawa kamar wankin cake da dewatering.

Idan daskararrun da aka samar a cikin tsarin LSFO ba su da kasuwa a matsayin gypsum na roba, wannan yana haifar da matsalar zubar da shara mai girma. Don tukunyar jirgi mai nauyin MW 1000 yana harba kwal na sulfur kashi 1, adadin gypsum ya kai ton 550 (gajeren) kowace rana. Ga shuka iri ɗaya harba kwal na sulfur 2 bisa dari, samar da gypsum yana ƙaruwa zuwa kusan tan 1100 a rana. Ƙara wasu tan 1000 a kowace rana don samar da ash, wannan yana kawo jimlar ƙaƙƙarfan ton zuwa kusan tan 1550 a kowace rana don 1% na sulfur kwal da 2100 ton a kowace rana na kashi 2 na sulfur.

Amfanin EADS

Ingantacciyar hanyar fasaha madadin gogewar LSFO ta maye gurbin farar ƙasa tare da ammonia azaman reagent don cire SO2. Daskararrun injin niƙa, ajiya, sarrafawa da abubuwan jigilar kayayyaki a cikin tsarin LSFO ana maye gurbinsu da tankunan ajiya masu sauƙi don ammonia mai ruwa ko ruwa. Hoto 2 yana nuna tsari mai gudana don tsarin EADS wanda JET Inc ya bayar.

Ammoniya, iskar hayaki, iskar oxygen da sarrafa ruwa suna shigar da abin sha mai ɗauke da matakan feshi da yawa. Nozzles suna haifar da ɗigo mai kyau na reagent mai ɗauke da ammonia don tabbatar da kusancin hulɗar reagent tare da iskar hayaƙi mai shigowa bisa ga halayen masu zuwa:

(1) SO2 + 2NH3 + H2O → (NH4)2SO3

(2) (NH4)2SO3 + ½O2 → (NH4)2SO4

SO2 a cikin rafin iskar hayaki yana amsawa tare da ammonia a cikin rabi na sama na jirgin don samar da ammonium sulfite. Ƙarshen jirgin ruwa mai ɗaukar ruwa yana aiki azaman tanki mai iskar shaka inda iska ke oxidizes da ammonium sulfite zuwa ammonium sulfate. Sakamakon maganin ammonium sulfate ana mayar da shi zuwa ga masu bututun bututun fesa a matakai da yawa a cikin abin sha. Kafin bututun hayaki da aka goge ya fita saman na'urar, ya ratsa ta cikin injin da zai tattara duk wani ɗigon ruwa da aka haɗe kuma yana ɗaukar ƙyalli masu kyau.

Halin ammoniya tare da SO2 da kuma iskar oxygen zuwa sulfate suna samun babban ƙimar amfani da reagent. Ana samar da fam huɗu na ammonium sulfate ga kowane fam na ammonia da aka cinye.

Kamar yadda yake tare da tsarin LSFO, ana iya cire wani yanki na reagent/samfurin rafin sake fa'ida don samar da samfuran kasuwanci. A cikin tsarin EADS, ana fitar da maganin samfurin takeoff zuwa tsarin dawo da daskararru wanda ya ƙunshi hydrocyclone da centrifuge don tattara samfuran ammonium sulfate kafin bushewa da marufi. Dukkan abubuwan ruwa (hydrocyclone ambaliya da cibiyar centrifuge) ana tura su zuwa tanki mai slurry sannan a sake shigar da su cikin rafin sake yin fa'ida ammonium sulfate.

• Tsarin EADS yana samar da ingantaccen cirewar SO2 mafi girma (>99%), wanda ke ba wa tsire-tsire wutar lantarki ƙarin sassauci don haɗawa mai rahusa, garwashin sulfur mafi girma.
• Ganin cewa tsarin LSFO yana haifar da ton 0.7 na CO2 don kowane ton na SO2 da aka cire, tsarin EADS ba ya haifar da CO2.
• Saboda lemun tsami da farar ƙasa ba su da ƙarfin aiki idan aka kwatanta da ammonia don cire SO2, ana buƙatar amfani da ruwa mafi girma da kuma yin famfo makamashi don cimma ƙimar wurare dabam dabam. Wannan yana haifar da ƙarin farashin aiki don tsarin LSFO.
• Farashin jari na tsarin EADS yayi kama da na gina tsarin LSFO. Kamar yadda aka ambata a sama, yayin da tsarin EADS yana buƙatar ammonium sulfate ta hanyar sarrafawa da kayan tattarawa, wuraren shirye-shiryen reagent da ke da alaƙa da LSFO ba a buƙata don niƙa, sarrafawa da sufuri.

Babban fa'idar EADS shine kawar da sharar ruwa da datti. Fasahar EADS tsari ne na fitar da ruwa-ruwa, wanda ke nufin ba a buƙatar maganin ruwa mai datti. Ƙaƙƙarfan samfurin ammonium sulfate yana da sauƙin kasuwa; ammonia sulfate ita ce taki da taki da aka fi amfani da shi a duniya, tare da ci gaban kasuwar duniya ana tsammanin ta zuwa 2030. Bugu da ƙari, yayin da masana'antar ammonium sulfate ke buƙatar centrifuge, na'urar bushewa, na'ura mai ɗaukar kaya da kayan marufi, waɗannan abubuwan ba na mallaka ba ne kuma na kasuwanci. samuwa. Ya danganta da yanayin tattalin arziki da kasuwa, takin ammonium sulfate na iya kashe farashi don lalata iskar hayaƙin hayaƙin hayaƙi na tushen ammonia kuma yana iya samar da riba mai yawa.

Ingantacciyar Tsari Tsari na Desulfurization Ammoniya

Shandong Zhongpeng Special Ceramics Co., Ltd yana daya daga cikin manyan sabbin kayan yumbu na silicon carbide a cikin kasar Sin. SiC fasaha yumbura: Moh's taurin ne 9 (New Moh ta taurin ne 13), tare da m juriya ga yashewa da lalata, m abrasion - juriya da anti-oxidation. Rayuwar sabis na samfurin SiC shine sau 4 zuwa 5 fiye da 92% kayan alumina. MOR na RBSiC shine sau 5 zuwa 7 na SNBSC, ana iya amfani dashi don ƙarin sifofi masu rikitarwa. Tsarin zance yana da sauri, isarwa kamar yadda aka yi alkawari kuma ingancin ba shi da na biyu. Kullum muna dagewa wajen kalubalantar manufofinmu da mayar da zukatanmu ga al'umma.