Discussion on Treatment Technology of Overflowing Waste Gas in Silicone Desulfurization Regeneration Tank

Abstract

During the process of removing the sulfur-containing gas in the semi-aqueous gas by using the rubber desulfurization process, a large amount of exhaust gas overflows from the top of the rubber desulfurization regeneration tank, which has a heavy odor. After testing, the exhaust gas contains a large amount of carbonyl sulfur (COS), ethanethiol (CH3CH2SH), volatile phenols and other volatile organic gases (VOCs), which has a certain toxicity, volatile and complex chemical composition, causing harm to the surrounding and operators. However, there is no stable, single, and effective exhaust gas treatment for the exhaust gas overflowing from the tannin desulfurization regeneration tank. Characteristics of the exhaust gas generated during the production process of the semi-water gas desulfurization and oxidation regeneration tank is studied in this paper. After process designed, debugged, optimized, and inspected repeatedly, the method of "washing absorption + condensation removal of water + filter + fan + activated carbon adsorption" is proposed. When the exhaust gas outlet concentration is 542mg/m3, the gas outlet concentration is 58.1mg/m3 and the processing system efficiency achieve 89.28% after debugged stably, which has reached the local environmental protection emission limit (120mg/m3).