Desulfurisasi gas buang

Pembersih gas di pembangkit listrik tenaga batu batu bara G. G. Allen di Amerika Serikat.

Desulfurisasi gas buang adalah prosedur pembersihan gas untuk memisahkan sulfur dioksida (SO₂) dari emisi gas buang, khususnya dari pabrik, pembangkit listrik, tempat pembakaran sampah dan mesin besar. Sulfur dioksida sendiri dihasilkan dari pembakaran bahan bakar fosil yang mengandung sulfur.

Reaksi kimia

${\begin{aligned}\mathrm {2\;SO_{2}+2\;Ca(OH)_{2}} &\longrightarrow \mathrm {2\;CaSO_{3}+2\;H_{2}O} \\\mathrm {2\;CaSO_{3}+O_{2}+4\;H_{2}O} &\longrightarrow \mathrm {2\;[Ca[SO_{4}]\cdot 2\;H_{2}O]} \\\hline \mathrm {2\;SO_{2}+2\;Ca(OH)_{2}+O_{2}+2\;H_{2}O} &\longrightarrow \mathrm {2\;[Ca[SO_{4}]\cdot 2\;H_{2}O]} \end{aligned}}$

Pranala luar

• Schematic process flow of FGD plant
• 5000 MW FGD Plant (includes a detailed process flow diagram)
• Alstom presentation to UN-ECE on air pollution control (includes process flow diagram for dry, wet and seawater FGD)
• Flue Gas Treatment article including the removal of hydrogen chloride, sulfur trioxide, and other heavy metal particles such as mercury.
• Institute of Clean Air Companies – national trade association representing emissions control manufacturers