Ua kom tiav Phau Ntawv Qhia Txog Dej Ntws Dej Desulfurization (FGD) Thiab DeNOx Systems

Kauj Ruam 1 - Nplai Roj Sau

Cov txheej txheem kev kho mob pib nrog kev sau cov roj flue uas tsim los ntawm cov txheej txheem combustion.

Cov pa phem ib txwm muaj xws li:

• sulfur dioxide (SO₂)
• Nitrogen oxides (NOx)
• ya tshauv
• Plua plav particle

Cov pa pa tawm yog thauj los ntawm ductwork mus rau hauv ntauwd desulfurization.

Kauj Ruam 2 - Nqus Nroj Tsuag Gas Desulfurization (FGD)

Nyob rau hauv lub ntub desulfurization ntauwd, limestone slurry yog sprayed tshaj cov khoom flue gas.

Raws li cov roj ntws mus rau sab saud, sulfur dioxide reacts nrog alkaline slurry thiab absorbed zoo.

Lub ntsiab tshuaj tiv thaiv yog:

SO₂ + CaCO₃ → CaSO₄ · 2H₂O (Gypsum)

Cov roj uas kho tau tawm ntawm lub absorber nrog feem ntau cov sulfur dioxide tshem tawm.

Kauj Ruam 3 - Gypsum Tsim thiab Slurry Recycling

Lub absorbed sulfur tebchaw teb nrog limestone slurry los tsim gypsum.

hauv kev lag luam xws li:

• Kev tsim cov cement
• Cov ntaub ntawv tsim kho
• Gypsum board ntau lawm

Lub caij no, cov slurry seem yog rov ua dua rov qab rau hauv lub tshuab nqus tsev, txo cov nqi khiav lag luam.

Kauj Ruam 4 – Xaiv Catalytic Reduction (SCR)

Tom qab desulfurization, cov roj flue nkag mus rau hauv denitrification reactor.

Ammonia (NH₃) lossis urea yog txhaj rau hauv cov pa roj ua ntej dhau los ntawm cov txheej txheem catalyst.

Nyob rau hauv lub catalyst reactor, nitrogen oxides hloov mus rau hauv tsis muaj nitrogen thiab dej.

Hom tshuaj tiv thaiv:

4NO + 4NH₃ + O₂ → 4N₂ + 6H₂O

Cov txheej txheem no ua tiav NOx tshem tawm cov txiaj ntsig siab dua 90%.

Kauj Ruam 5 – Ntxuav cov pa tawm

Tom qab ua tiav desulfurization thiab denitrification, cov roj kho tau tawm los ntawm pawg.

Qhov kawg emissions muaj qhov txo qis concentration ntawm:

• SO₂
• NOx
• Plua plav

tso cai rau cov chaw tsim khoom ua raws li cov cai hauv zos thiab thoob ntiaj teb ib puag ncig.