Desulfurisasi gas buang

Pembersih gas buang 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

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

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 Diarsipkan 2008-10-07 di Wayback Machine. (includes process flow diagram for dry, wet and seawater FGD)
• Flue Gas Treatment Diarsipkan 2013-03-09 di Wayback Machine. article including the removal of hydrogen chloride, sulfur trioxide, and other heavy metal particles such as mercury.
• Institute of Clean Air Companies Diarsipkan 2020-10-01 di Wayback Machine. – national trade association representing emissions control manufacturers