Desulfurization of coke-oven gas

Coke oven gas: Availability, properties, purification, and utilization in China

“…China has installed five such units based on this sulfur removal technology from COG. Certain advantages associated with this process include zero toxic emissions and the generation of a useful by-product (sulfur) [34].…”

“…The joint removal of NH 3 and H 2 S from COG using the Ama-sulf technology was thus introduced. This approach involves the partial oxidation of H 2 S and the simultaneous decomposition of NH 3 over a Ni catalyst at 1100°C to 1200°C [34,35].…”

Absorption and Removal Efficiency of Low-Partial-Pressure H2S in a Monoethanolamine-Activated N-Methyldiethanolamine Aqueous Solution

“…Coke oven gas (COG) is widely used as a high-temperature furnace fuel and city gas to enhance energy efficiency. , However, the existence of hydrogen sulfide (H 2 S) in COG can cause equipment corrosion in the industry and also endanger the environment and human health. − Thus, it is necessary to remove H 2 S from GOC (residual contents ≤ 0.5 g/m 3 according to Chinese cleaner production standard: Coking industry, HJ/T 126-2003). H 2 S from GOC can be removed by chemical absorption using aqueous solution of diethanolamine (DEA), diisopropanolamine (DIPA), monoethanolamine (MEA), and N -methyldiethanolamine (MDEA). − The aqueous alkanol amine solution absorbs acid gas at approximately ambient temperature via a reversible chemical reaction. At a higher temperature (approximately 393 K), the absorbed acid gas can be released and the solvent can be regenerated …”