Silicon Carbide FGD Nozzle rau Desulfurization Hauv Kev Cog Lus
Flue Gas Desulfurization (FGD) Absorber Nozzles
Kev tshem tawm cov leej faj oxides, feem ntau yog hu ua SEX, los ntawm kev tso pa roj cua siv cov alkali reagent, xws li ntub lim devestone slurry.
Thaum pob txha roj hmab tau siv nyob rau hauv cov txheej txheem combusioned los khiav boilers, Furnaces, lossis lwm yam khoom siv uas yuav tso tawm cov pa roj. Cov neeg mob Oxides Oxides ua tau yooj yim nrog rau lwm cov ntsiab lus kom muaj kev phom sij xws li cov sulfuric acid thiab muaj peev xwm cuam tshuam rau tib neeg kev noj qab haus huv thiab ib puag ncig. Vim cov teebmeem muaj peev xwm no, kev tswj hwm ntawm cov compound no nyob rau hauv flue gases yog qhov tseem ceeb ntawm cov thee raug hluav taws xob nroj tsuag thiab lwm yam kev siv khoom siv.
Vim yog kev yaig, plugging, thiab tsim kev txhawj xeeb, yog ib qho ntawm feem ntau cov pa hluav taws xob tau siv lub suab, hydrated txiv qaub, dej hiav txwv, dej hiav txwv, lossis lwm yam tshuaj alkaline. Txau tsis muaj peev xwm ua tau zoo thiab ntseeg tau muab cov slurries no ua rau cov yees nqus dej. Los ntawm kev tsim cov qauv sib txawv ntawm cov tee dej kom zoo, cov muaj peev xwm tsim cov cheeb tsam kom muaj txiaj ntsig thaum muaj kev nkag rau ntawm cov pa roj.
Xaiv ib fgd nqus nozzle:
Cov ntsiab lus tseem ceeb los xav txog:
Scrubbing Media Density thiab Viscosity
Yuav tsum muaj droplet loj
Qhov tseeb droplet loj yog qhov tseem ceeb los ua kom ntseeg tau tus nqi tsim nyog
Cov Khoom Siv Nozzle
Raws li cov roj Flue feem ntau yog cov kua dej thiab cov tawv nqaij muaj kuab lom thiab cov khoom siv tsis txaus ntseeg, cov khoom tiv taus yog qhov tseem ceeb
Nozzle Clog Kuj
Raws li cov tawv nqaij cov kua yog ntau zaus nrog cov ntsiab lus khib nyiab, xaiv lub nozzle nrog rau Clog tsis kam yog qhov tseem ceeb
Nozzle tshuaj tsuag qauv thiab kev tso kawm
Txhawm rau kom ntseeg tau tias txoj kev nqus tau kom haum ntawm cov pa roj uas tsis muaj kev hla thiab lub sijhawm chaw nyob zoo yog qhov tseem ceeb
Nozzle Txuas Loj Loj thiab Ntaus
Yuav tsum tau txhuam cov kua dej ntws
Muaj Kev Yooj Yim Poob Lawm (ΔP) hla lub nozzle
ΔP = muab cov siab ntawm nozzle Inlet - cov txheej txheem siab sab nraud nozzle
Peb cov kws paub dhau los pab txiav txim siab seb cov nozzle yuav ua raws li koj cov ntsiab lus tsim
Cov FGD FAMD AUTOMORBER NOzzle siv thiab kev lag luam:
Coal thiab lwm yam Fossil Roj Fais Fab Nroj Tsuag
Roj av rov qab
Cov Khoom Siv Hauv Nroog
Maas Kilns
Hlau SMELASS
Cov Khoom Siv Sic Datasheet
Drawbacks nrog txiv qaub / Limestone
Raws li muaj nyob hauv daim duab 1, FGD Systems ua haujlwm txoj kua qaub / limestone yuam oxidation (LSFO) suav nrog peb qhov kev ncua loj:
- Reagent npaj, tuav thiab cia
- Kev nqus lub nkoj
- Pov tseg thiab brepproduct tuav
Reagent npaj muaj kev sib tsoo tsoo limestone (CACO3) los ntawm kev khaws cia kom muaj kev kub ntxhov. Lub resulting lim dej slurry yog tom qab ntawd nqus mus rau lub nkoj nqus nrog rau cov roj boiler flue thiab oxidizing cua. Tsuag nozzles muab cov tee dej zoo ntawm reagent uas tom qab ntws tawm rau cov roj ntsha tuaj. Lub AN2 hauv Flue Roj Reacts nrog cov calcium-nplua nuj reagent los ua daim calcium sulfite (caso3) thiab CO2. Cov huab cua qhia rau hauv kev nqus tau txhawb nqa oxidation ntawm caso3 rau caso4 (DIHHDRATE daim foos).
Qhov yooj yim LSFO cov tshuaj tiv thaiv yog:
CaCo3 + So2 → caso3 + Co2Kh2o
Cov oxidized slurry sau nyob rau hauv qab ntawm kev nqus thiab yog tom qab rov ua raws nrog reagent rov qab mus rau cov tshuaj tsuag nozzle hezzle hezzle hezzle hezzle hezzle hezzle hezzle hezzle hezzle hau pliaj. Ib feem ntawm cov dej rov qab ua haujlwm yog rho tawm rau cov khib nyiab / los ntawm cov ntxaij lim dej, nruas lossis siv tshuaj lim dej / cawv / cawv tuav tank. Wastewater los ntawm kev tuav lub tank yog rov ua dua tshiab rau ntawm lub tankesnea reagent pub mis los yog mus rau qhov chaw hydrocyclone uas cov phwj dej yog muab tshem tawm li effluent.
| Raug txiv qaub / limestone yuam oxidatin ntub cov txheej txheem schematic |
 |
Cov LSFO lub lsfo feem ntau tuaj yeem ua tiav cov khoom siv tshem tawm li ntawm 95-97 feem pua. Mus txog qib siab tshaj plaws 97.5 feem pua kom tau raws li cov kev tswj emissions, txawm li cas los xij, tshwj xeeb yog rau cov nroj tsuag uas siv cov npoo ntawm cov tsiaj. Magnesium catalysts tuaj yeem ntxiv los yog lub limestone tuaj yeem muab suav rau cov khoom muaj txiaj ntsig ntau dua thiab cov kev hloov kho cov nqi ntxiv thiab cov nqi hluav taws xob. Piv txwv li, calcining rau txiv qaub yuav tsum tau teeb tsa ntawm kev sib txawv txiv qaub ncub. Tsis tas li, txiv qaub yog qhov yooj yim precipitated thiab qhov no nce lub peev xwm rau cov nyiaj tso rau hauv lub tshuab txhuam.
Tus nqi ntawm kev xam pom nrog cov txiv qaub ntuj tuaj yeem txo los ntawm kev tiv thaiv ncaj qha rau hauv lub rhaub boiler. Hauv txoj kev no, txiv qaub generated hauv lub boiler yog nqa nrog cov roj flue rau hauv cov scrubber. Cov teeb meem tau muaj xws li boiler fouling, cuam tshuam nrog kev hloov cua sov, thiab txiv qaub tsis dhau kev vim kev hla dhau hauv lub rhaub dej. Ntxiv mus, lub txiv qaub txo qhov kub ntws ntawm molten tshauv hauv thee-raug rho tawm haujlwm boilers, tshwm sim hauv cov khoom tso tawm uas yuav txwv tsis pub muaj.
Kua khib nyiab los ntawm LSFO txheej txheem ib txwm qhia rau cov pas dej ruaj ruaj nrog kua khib nyiab los ntawm lwm qhov chaw hauv lub zog. Lub ntub dej FGD ua kua effluent tuaj yeem muaj cov sulfite thiab cov txheej txheem sulfite feem ntau txwv nws cov dej ntws, ntws lossis lwm yam dej ntas. Tsis tas li ntawd, kev rov ua dua tshiab / haus cawv rov qab mus rau cov kws tu hniav tuaj yeem ua rau tus neeg tsim khoom noj kom yaj, tshuaj calsassium, calcium, cov ntsev magnesium. Cov hom no tuaj yeem thaum kawg crystallize tshwj tsis yog los ntshav txaus yog muab los ua kom cov ntsev yaj ua hauv qab kev lom zem. Ib qho teeb meem ntxiv yog qeeb ntawm cov khib nyiab, uas ua rau cov kev xav tau loj, muaj cov khoom siv ua kom ruaj khov. Nyob rau hauv cov xwm txheej raug, txheej teeb nyob rau hauv ib lub pas dej ruaj khov tuaj yeem muaj 50 feem pua lossis ntau theem ua kua txawm tias tom qab ob peb lub hlis ntawm cia.
Cov calcium sulfate rov qab los ntawm cov pos nphuab rov qab siv dua slurry tuaj yeem yog qhov siab ntawm lub limestone thiab calcium sulfite hmoov tshauv. Cov kab mob no tuaj yeem tiv thaiv cov calcium sulfate los ntawm kev muag raws li cov hluavtaws ntawm cov khoom siv hluavtaws rau kev siv hauv cov duab duab, plaster, thiab cement ntau lawm. Unreacted limestone yog lub predomant impurity pom nyob rau hauv hluavtaws gypsum thiab nws kuj yog tus kabmob loj hauv ntuj (mined) gypsum. Thaum limestone nws tus kheej tsis cuam tshuam nrog cov khoom ntawm wallboard kawg cov khoom lag luam, nws cov khoom muaj abrasive tam sim no hnav cov teeb meem rau kev ua khoom siv. Calcium sulfite yog qhov tsis xav tsis nkag rau hauv ib qho gypsum raws li nws cov teeb meem zoo tshaj plaws ua teeb meem xws li kev ntxuav ncuav thiab dewatering.
Yog tias cov khib nyiab tsim tawm hauv LSFO cov txheej txheem tsis ua lag luam ua hluav taws xob gypsum, qhov no ua rau muaj teeb meem khib nyiab loj. Rau 1000 MW boiler hluav taws kub 1 feem pua sulfur thee, tus nqi ntawm gypsum yog kwv yees li 550 tons (luv luv) / hnub. Rau tib cov nroj tsuag tua hluav taws 2 feem pua sulfur thee, gypsum ntau lawm nce mus rau kwv yees li 1100 tons / hnub. Ntxiv qee 1000 tons / hnub rau ya cov hmoov av tshauv, qhov no coj tag nrho cov khoom siv hluav taws xob thiab 2100 tons / hnub rau 2 feem pua cov neeg Sulfur Case.
EADS zoo
Kev xaiv tshuab ua pov thawj rau LSFO Scrubbing hloov chaw limestone nrog ammonia raws li reagent rau li2 tshem tawm. Cov khoom reagent milling, cia, tuav thiab cov chaw thauj khoom hauv LSFO system tau hloov los ntawm cov khoom tso tsheb nres cia yooj yim rau aqueous lossis anhydrous ammonia. Daim duab 2 qhia tau tias muaj kev kub siab rau cov EADS system muaj los ntawm Dav Hlau Inc.
Ammonia, Flue roj, oxidizing huab cua thiab cov txheej txheem dej nkag mus rau cov muaj ntau theem ntawm cov tshuaj tsuag nozzles. Cov nozzles tsim cov tee dej zoo ntawm ammonia-muaj reagent kom ntseeg tau tias muaj kev tiv tauj zoo nrog cov tshuaj tiv thaiv hauv qab no:
(1) So2 + 2NH3 + H2O → (NH4) 2SO3
(2) (NH4) 2SO3 + ½2 → (NH4) 2S4
Lub AN2 hauv Flue roj ncau nrog Ammonia nyob rau sab qaum ib nrab ntawm lub nkoj los tsim ammonium sulfite. Hauv qab ntawm cov hlab ntsha ua haujlwm ua cov oxidation tank qhov twg cua oxidizes cov ammonium sulfite rau ammonium sulfate. Lub resulting ammonium sulfate daws tau muab rov qab rau cov tshuaj tsuag nozzle heavers ntawm ntau theem hauv kev ua haujlwm. Ua ntej tso cov pa hluav taws xob nrog cov pa roj tawg sab saum toj ntawm cov kev ua kua uas cov hluav taws xob ua kua tawm thiab ua rau cov particulates thiab captures zoo particulates.
Cov tshuaj tiv thaiv ammonia nrog rau ish2 thiab sulfite oxidation mus rau sulfate ua tiav tus nqi siab uas siv tau ntau. Plaub phaus ntawm ammonium sulfate yog tsim tawm txhua phaus ntawm ammonia noj.
Raws li nrog LSFO txheej txheem, ib feem ntawm reagent / khoom siv cov dej rov qab tuaj yeem raug rho tawm los ua cov lag luam kev lag luam. Nyob rau hauv qhov EADS system, cov kua dej tawm rau cov khib nyiab rov qab los system muaj cov khoom lag luam ammonium ua ntej kom qhuav thiab ntim khoom. Txhua cov kua dej (helrocyclone txeej thiab centrifuge centrate) yog qhia rov qab mus rau ib qho kev ua kom tawg thiab rov ua rau hauv cov pa ammonium sulfate rov qab cub.
- EADS cov kab ke muab cov khoom siv tshem tawm siab dua (> 99%), uas muab cov hluav taws xob tawg yooj yim kom muab cov khoom pheej yig dua, cov npoo ntau dua.
- Whereas LSFO Systems Tsim 0.7 Tons ntawm CO2 rau txhua tuj ntawm SO2 tshem tawm, qhov txheej txheem EADS ua tsis muaj CO2.
- Vim tias cov txiv qaub thiab limestone tsis tshua muaj kev cuam tshuam nrog Ammonia rau cov txheej txheem dej thiab cov txheej txheem ntau dua yog qhov yuav tsum tau ua kom tiav cov nqi siab. Qhov no ua rau muaj kev khiav hauj lwm ntau dua rau LSFO cov tshuab.
- Cov nqi peev rau EADS systems zoo ib yam li cov kev tsim tsa LSFO. Raws li tau sau tseg saum toj no, thaum EADS system yuav tsum ammonium sulfate los ntawm LSFO tsis tas yuav siv rau milling, tuav thiab thauj.
Qhov kev sib txawv tshaj plaws ntawm Ereads yog kev tshem tawm ob qho tib si kua thiab khoom siv tau. Cov Eread Ereads yog cov txheej txheem ua kua dej-ua kua-uas txhais tau tias tsis muaj kev kho kom dej huv. Cov khoom ammonium sulfate bapdroduct yog yooj yim ua lag ua luam; Ammonia sulfate yog cov siv chiv feem ntau nyob hauv lub ntiaj teb, nrog rau cov khoom lag luam thoob ntiaj teb, cov khoom lag luam thoob ntiaj teb, cov khoom no yog cov khoom siv tsis yog-qauv thiab muaj kev lag luam. Ua raws li kev khwv nyiaj txiag thiab kev lag luam, ammonium sulfate cov chiv tuaj yeem ua rau cov nqi ammonia raws li cov roj tsis muaj txiaj ntsig thiab muaj peev xwm muab cov nyiaj tau los ntau.
| Cov txheej txheem Ammonia Desulfurization Txheej Txheem Schematic |
 |
Shandong Zhongpeng Tshwj Xeeb Ceramics Co., Ltd yog ib qho loj tshaj plaws silicon carbide khaub thuas cov khoom siv tshiab hauv Suav teb. Txuj lom sic: moh lub hardness yog 9 (tshiab Moh lub hardness yog 13), nrog kev tiv thaiv zoo heev rau kev tawm tsam - tsis kam thiab anti-oxidation. Sic cov khoom lag luam lub neej yog 4 txog 5 zaug ntev dua 92% alumina khoom. Lub mor ntawm RBSIC yog 5 txog 7 zaug ntawm snbsc, nws tuaj yeem siv rau cov duab nyuaj ntxiv. Cov txheej txheem hais tawm tau nrawm, kev xa khoom yog li tau cog lus tseg thiab qhov zoo yog thib ob rau tsis muaj. Peb ib txwm ua siab ntev hauv peb lub hom phiaj nyuaj thiab muab peb lub siab rov qab rau tib neeg.
