Urea kev daws rau cov fais fab nroj tsuag denitrification: Saws cov txiaj ntsig, cov txiaj ntsig & cov qauv yav tom ntej
Raws li lub ntiaj teb emissions txoj cai ua kom nruj,Coal-Rolled Fais Fab Nroj Tsuagkev ceev yuav xav tau cov kev daws teeb meem kom txo taunitrogen oxide (NOX) emissionsCov. Ntawm cov thawj cojKev Txwv Txoj Cai Technologies, Xaiv catalytic txo (scr)sawv tawm rau nws txoj kev ua tau zoo, thiabure daws kev daws teeb meemtau dhau los ua tus nyiamtxo tus neeg sawv cevVim nwskev xyuas xim, nqi zog-ua hauj lwm, thiabCov txiaj ntsig ib puag ncigCov. Cov lus qhia no tshawb nrhiav vim li cas urea tau hloov khoNOX Tshem Tawm Hauv Cov Nroj Hluav Taws Xob, nws txoj haujlwm ua haujlwm ua haujlwm, thiab kev nrhav kev tshiab.
HauvScr Denitrification Systems, urea daws (feem ntau40-50% concentration) tau txhaj rau hauvFlue roj ducts, qhov twg nws decomposes rau hauvammonia (nh3)nyob rau hauv high kub. Ammonia ces reacts nrog nox kuab paug rauSAU CATALYSSts(piv txwv li, v₂o₅-wo₃ / tio₂), hloov lawv mus rau hauv kev tsis muaj kev phom sijNitrogen Roj (N2)thiabDej (H2O).
Qhov tseem ceeb Cov tshuaj tiv thaiv:
Urea rau ammonia:
Co (NH2CO (NH2
SAU NOX txo:
4NO {{+4 nh {}}}}}} → 4n2 {{{14 {14 {h2 o
Vim li casure daws kev daws teeb meemTus muaj kev nyab xeeb, kev xaiv greener rauPom depitrication?
Tshem Tawm Kev Nyab Xeeb Kev Nyab Xeeb
Tsis zoo liflammable ua kua ammonia, urea yogtsis-lom, tsis-luag, thiab yooj yim rau khw-tseem ceeb rau kev ua raws liLub Hwj Chim Cog Cov Qauv Kev Nyab Xeeb.
Txo kev cuam tshuam ib puag ncig ib puag ncig
Urea decomposition ua rau xwbNh3thiabCO2, zam kev ua qias tuaj thib ob. Zoo meej raueco-phooj ywg fais tiam.
Cov nqi qis kev ua haujlwm
Urea yogpheej yig dua kua ammonia, nrog cov khoom siv hluav taws xob ruaj khov ruaj khov. Zoo tagnrho rauTus nqi-rhiab fais fab nroj tsuag.
Yoog raws rau cov chaw me me
Cov kev hloov kho tau yooj yim ({40-50%) ib qho nroj tsuag ntau ntau, txawm tias cov chaw seem.
Ua kom tiavNOX Tshem Tawm Kev Tshem TawmNrog cov kev coj ua zoo tshaj plaws:
Kauj ruam 1: Kev Nyab Xeeb-Kev Npaj Reaj
Kev sivIndustrial-Qeb urea(99% purity) kom tsis txhob lom.
Sib xyaw nrogDej deionYuav kom tiv thaiv cov yeeb nkab corrosion.
Kauj ruam 2: Ntse Cia & Tus Me Nyuam
Nruab tso tsheb hlau luam kom tiv thaivurea crystallizationnyob rau hauv huab cua txias.
Siv Precision Dosing Twj rau Zoo Li NH3 tiam.
Kauj ruam 3: Kev siv atomization
Ua kom zoo cov qauv nozzle rau kev faib tawm niaj hnub uas faib tawm hauvFlue roj ducts.
Tswj kev duct kub saum toj no180 degreekom tsis txhob muaj cov khoom noj zoo licyanuric acid.
Kauj ruam 4: Saib xyuas catalyst kev ua tau zoo
Txoj kevSAU kev ua sithiab hloov cov modules thaum efficy dauv qis dua 80%.
CeevAmmonia daim tiabhauv qab3 PPMmus ntsib EPA cov qauv.
Cov tiam tom ntej ntawmCov ntxhiabyuav tsom rau:
Ai-powered urea dosing
Tshuab Kev Kawm Algorithms txheeb xyuas lub sijhawm tiag tiagNOx theemthiabFlue Roj Cov Ntaub Ntawvkom ua kom zoo urea noj.
Tsawg-kub catalysts
Tshiab catalysts pab kom cov kev tawm tsam ntawm150-200 degree, npuaj nqi zog los ntawm 20%.
Cov pa roj carbon-nruab nrab
Khub urea scr nrogCo2 ntes cov tshuabkom ua tiavNet-Xoom Zog Cog Emissions.
Q: Cov tshuaj urele sib xws nrog txhua qhov scrad?
A: Yog, tab sis rov mus yuav xav tau kev hloov kho tshiabAtomization NozzlesthiabKev Tswj Kub.
Q: Ntau npaum li cas urea xav tau rau 500 mw lub zog hluav taws xob?
A: Feem ntau{{0 {0}}. {5-1 nyhav ib toos / teev, nyob ntawm cov qib tsis muaj nqis thiab cov khoom ua tau zoo.
Q: Puas tuaj yeem hloov kho ammonia hauv cov scrizia uas twb muaj lawm?
A: kiag li-ntau cov nroj tsuag hloov mus urea los txhim khoKev Nyab Xeeb Kev Nyab Xeebthiabkev ceev kev cai.
Xaus: urea daws - Qhov kev xaiv ntse rau lub zog nqus tsev ntxhua khaub ncaws
Rau lub hwj chim nroj tsuag hluasEPA Ua Raws, Nqi txuag, thiabKev Ua Haujlwm, Urea raws li screnDricalification muab cov nqi uas tsis muaj nqi. Los ntawm kev yuavNtse urea dosing tshuabthiabAdvanced catalysts, cov hlauv tuaj yeem ua tiav90% + Nox txoThaum npaj rau cov pa roj carbon-nruab lub caij tom ntej.
Xav tau ib qho kev sib raug zoo urea scru kev daws teeb meem?[Hu rau peb cov kws tshaj lij] kom ua kom koj cov nroj tsuag cov pa hluav taws tswj lub tswv yim.
Me nyuam yaus
Xiav tshiab muaj ntau dua kaum xyoo ntawm kev ua kom cov neeg sawv cev ntawm nox, muaj cov khoom lag luam zoo uas ua raws li ISO2241 tus qauv.
Cov khoom lag luam tsuas yog suav nrog: Fais fab cog urea, advenive cog urea, adpensive cog urea, cov khoom siv lag luam rau cov khoom siv, cov khoom tu kho tsheb, cov khoom tu kho mob thiab lwm yam.
