Flue gas desulfurization thiab denitrification nyob rau hauv thermal fais fab nroj tsuag yog ib tug complex thiab loj system engineering, thiab nws daim ntawv thov dav tau coj zoo kev cov nyom thiab lub cib fim rau txoj kev loj hlob ntawm Tuam Tshoj lub hwj chim tuam txhab uas muag. Vim qhov loj loj thiab nyuaj ntawm qhov project no, ntau yam khoom siv tshuab yuav raug siv. Tsuas yog cov cuab yeej tshwj xeeb uas xav tau los ntawm txawv teb chaws, feem ntau ntawm cov cuab yeej siv tshuab yuav ua tiav los ntawm cov lag luam hauv tsev. Nyob rau hauv cov ntaub ntawv no, nws tseem yuav ua rau qee qhov tsav kev txhim kho ntawm cov kev lag luam muaj feem xyuam hauv Suav teb thiab txhawb kev txhim kho ntawm Tuam Tshoj txoj kev sib raug zoo thiab kev lag luam. Thaum kawg, peb tuaj yeem siv qhov no los ua ib lub sijhawm los tsim kom muaj kev tshawb fawb pab pawg rau flue gas desulfurization thiab denitrification technology, tshwj xeeb hauv kev tsim cov thev naus laus zis. Qhov no yuav tsis tsuas yog paub zoo dua thiab txhim kho desulfurization thiab denitrification technology, tab sis kuj nteg lub hauv paus ruaj khov rau txoj kev loj hlob ntawm Tuam Tshoj txoj kev tiv thaiv ib puag ncig kev lag luam.
1. Daim ntawv thov tus nqi ntawm flue gas desulfurization thiab denitrification tshuab hauv thermal fais fab nroj tsuag
Lub zog tsim hluav taws xob hauv thermal fais fab nroj tsuag feem ntau yog nyob ntawm kev sib txuas, thiab cov qib ntawm cov roj combustion tuaj yeem cuam tshuam cov muaj pes tsawg leeg thiab cov ntsiab lus ntawm cov pa tawm hluav taws xob. Cov khoom tseem ceeb muaj nyob rau hauv cov pa tso pa tawm los ntawm thermal fais fab nroj tsuag yog sulfur dioxide, nitrogen oxides, thiab lwm yam. Yog hais tias cov emissions tsis kho raws sij hawm thiab siv tau zoo, lawv yuav ntab rau saum huab cua, ua rau muaj kuab paug rau huab cua puag ncig. thiab tseem ua rau muaj kev puas tsuaj ntuj xws li nag los nag. Tsis tas li ntawd, cov pa luam yeeb tawm los ntawm thermal fais fab nroj tsuag tuaj yeem ua rau muaj kev hem thawj rau tib neeg kev noj qab haus huv. Tam sim no, muaj qhov sib txawv tseem ceeb hauv cov txheej txheem ntawm kev kho cov roj flue ntawm feem ntau cov hluav taws xob thermal. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum siv flue gas desulfurization thiab denitrification technology hauv thermal fais fab nroj tsuag. Los ntawm kev thov thiab kev tshawb fawb ntawm cov thev naus laus zis no, kev tiv thaiv ib puag ncig tuaj yeem ua tiav thiab tib neeg kev noj qab haus huv tuaj yeem lav tau zoo dua. Txhawb nqa kev txhim kho ntxiv thiab kev loj hlob ntawm thermal fais fab nroj tsuag
2. Daim ntawv thov ntawm flue gas desulfurization thiab denitrification technology nyob rau hauv 3 thermal fais fab nroj tsuag
2.1 Flue gas desulfurization tshuab rau thermal fais fab nroj tsuag
(1) Qhuav desulfurization tshuab. Kev siv tshuab ntawm adsorbing sulfur dioxide los ntawm solid-state catalysts. Tam sim no, muaj ob lub ntsiab desulfurization technologies uas nquag siv nyob rau hauv Tuam Tshoj: oxide txoj kev thiab activated carbon adsorption txoj kev. Kev siv tshuab ziab desulfurization tuaj yeem txhim kho tus nqi desulfurization. Qhov teeb meem yog tias cov khoom tsim tom qab desulfurization tsis tuaj yeem rov qab los, uas tseem yog qhov tsis zoo ntawm kev siv tshuab ziab desulfurization.
(2) ntub dej desulfurization tshuab. Cov tshuab ntub dej desulfurization yog qhov sib txawv ntawm cov tshuab desulfurization qhuav uas tau hais los saum no, uas siv cov kua catalysts kom ua tiav desulfurization. Piv nrog rau cov tshuab ziab khaub ncaws qhuav, cov tshuab ntub dej desulfurization muaj cov nyhuv desulfurization zoo dua, nrog rau tus nqi desulfurization txog li 90% lossis ntau dua. Tam sim no nws yog ib qho cuab yeej siv dav hauv thermal fais fab nroj tsuag. Ntxiv mus, rau cov cuab yeej ntub dej desulfurization, nws tsis tas yuav muaj peev txheej loj los ntawm thermal fais fab nroj tsuag, thiab cov khoom siv tom qab desulfurization kuj tseem siv tau. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tsom mus rau kev siv cov tshuab desulfurization no. Tam sim no, muaj ntau yam siv desulfurization technologies hauv thermal fais fab nroj tsuag, uas yog limestone gypsum flue gas desulfurization technology thiab seawater desulfurization technology. Lub limestone gypsum flue gas desulfurization tshuab feem ntau yog siv limestone adsorb sulfur dioxide nyob rau hauv flue gas, uas tsis xav tau ib tug loj peev nqi. Ntxiv mus, gypsum ua tom qab desulfurization tuaj yeem rov ua dua, yog li nws cov txiaj ntsig kev lag luam zoo heev. Seawater flue gas desulfurization tshuab feem ntau yog siv lub hauv paus ntsiab lus ntawm acid-base neutralization, uas yog cov tshuaj lom neeg cov tshuaj tiv thaiv tsim los ntawm kev sib xyaw ntawm emission sulfur dioxide thiab alkaline gases. Rau cov thev naus laus zis no, tus nqi thov tsis yog siab heev thiab nws yooj yim rau kev khiav lag luam, yog li nws kuj tau siv dav.
(3) Cov pa roj ammonia desulfurization tshuab. Nws qhov txiaj ntsig loj tshaj plaws thiab qhov tshwj xeeb yog tias nws tuaj yeem siv emissions raws li kev ua liaj ua teb chiv, uas yog heev nyob rau hauv txoj kab nrog rau tam sim no nyob rau hauv Tuam Tshoj. Nyob rau hauv daim ntawv thov txheej txheem, siab concentration ammonia dej yog siv raws li ib tug adsorbent los nqus sulfur dioxide tshuaj, yog li ua tiav cov nyhuv thiab lub hom phiaj ntawm flue gas purification. Txawm li cas los xij, tam sim no, cov thev naus laus zis no tsis tau siv rau hauv thermal fais fab nroj tsuag hauv Suav teb rau ob qho laj thawj tseem ceeb: ua ntej, tus nqi ntawm ammonia kuj tseem kim, uas yuav nce nqi peev; Lwm qhov nyuaj yog tias kev ua haujlwm tom qab desulfurization yog qhov nyuaj heev, uas yuav ua rau qee qhov cuam tshuam rau daim ntawv thov thiab kev txhawb nqa ntawm flue gas ammonia desulfurization technology.
2.2 Flue Gas Denitrification Technology nyob rau hauv Thermal Power Plants
(1) SCR denitrification technology. SCR denitrification thev naus laus zis tuaj yeem ua tiav tus nqi denitrification txog li 90% hauv cov pa roj, thiab tam sim no yog cov cuab yeej siv dav siv denitrification. Feem ntau los ntawm cov tshuaj tiv thaiv ntawm kev txo cov neeg ua haujlwm thiab cov nitrogen oxides hauv cov pa roj, cov roj tsis muaj kuab lom thiab tsis muaj kuab paug thiab dej yog tsim, yog li ua tiav kev tiv thaiv ib puag ncig. Qhov loj tshaj feature ntawm no technology yog hais tias nws yog heev mature thiab lub lag luam yog tshwj xeeb tshaj yog yooj yim. Los ntawm qhov kev xav tam sim no ntawm kev ua haujlwm ntawm flue roj tswj hauv thermal fais fab nroj tsuag, daim ntawv thov cov nyhuv ntawm SCR denitrification thev naus laus zis yog qhov pom tseeb heev, thiab nws kuj yog cov cuab yeej siv dav tshaj plaws.
(2) SNCR denitrification technology. SNCR denitrification technology siv
Catalysts thiab high-temperature boilers yog txo cov neeg sawv cev uas muaj cov amino pawg uas tsim cov roj nitrogen, uas reacts nrog nitrogen oxides thaum kawg tsim nitrogen gas thiab dej. qhov no
Txawm hais tias tus nqi ntawm cov thev naus laus zis no tsis siab thiab kev ua haujlwm tsis yog qhov nyuaj, nws tseem muaj qhov tsis zoo piv rau SCR denitrification technology uas tau hais los saum toj no.
Nws yog qhov pom tseeb tias tus nqi denitrification qis dua, thiab tus nqi denitrification ntawm cov cuab yeej no tsuas yog nce mus txog 30%, uas tseem nyob deb ntawm qhov xav tau tiag tiag.
(3) SNCR-SCR tshuab. Nws yog ib qho kev siv tshuab denitrification uas sib txuas ua ke saum toj no ob lub tshuab denitrification, feem ntau yog siv cov kev ua haujlwm siab.
Qhov kub thiab txias ua rau tus neeg sawv cev txo qis kom hnov mob nrog cov tshuaj hauv cov pa roj, thiab tom qab ntawd cov tshuaj tsis ua haujlwm raug muab tso rau hauv SCR reactor los tsim cov catalyst.
Cov tshuaj tiv thaiv. Nyob rau hauv daim ntawv thov ntawm no denitrification technology, qhov zoo ntawm cov saum toj no ob denitrification technologies tuaj yeem pom, uas tsis tsuas yog them nyiaj rau SNCR denitrification.
Qhov tsis muaj thev naus laus zis tuaj yeem txo cov nqi thiab txhim kho denitrification tus nqi, yog li nws tau siv dav hauv thermal fais fab nroj tsuag.
