Carbonyl sulfide removal Organic sulfur

Sulfinol A process for removing hydrogen sulfide, carbon dioxide, carbonyl sulfide, and organic sulfur compounds from natural gas by scrubbing with di-isopropanolamine dissolved in a mixture of sulfolane and water. Developed in the 1960s by Shell International Research Mij N.V, The Netherlands and Shell Development Company, Houston. In 1996, over 180 commercial units were operating or under construction. 

Molecular Sieve Treatment. Molecular sieve treaters can be designed to remove H2S, organic sulfur compounds (including carbonyl sulfide), and water in one step. SoHd-bed units are utilized and regeneration occurs in the same manner as simple, soHd-bed dehydrators. 

Katasorbon A process for removing carbonyl sulfide and other organic sulfur compounds from syngas by combined catalysis and adsorption. Offered by Lurgi. 

Beavon Also called BSR [Beavon Sulfur Removal], A process for removing residual sulfur compounds from the effluent gases from the Claus process. Usually used in conjunction with other processes. Catalytic hydrogenation over a cobalt-molybdena catalyst converts carbonyl sulfide, carbon disulfide, and other organic sulfur compounds to hydrogen sulfide, which is then removed by the Stretford process. A variation (BSR/MDEA), intended for small plants, uses preliminary scrubbing with methyl diethanolamine. Developed by the Ralph M. Parsons Company and Union Oil Company of California in 1971. More than 100 plants were operating in 2000. See also SCOT. 

This section covers the removal of COS, CS2, and light mercaptans from gas streams by amine solutions. These are the principal organic sulfur compounds normally encountered in fuel and synthesis gases. The removal of organic sulfur compounds from liquid hydrocarbons is discussed in the next section. The presence of the above components (and many other reactive species) in a gas to be treated raises two questions (1) How much, if any, of the material will be removed during the treating operation and (2) will the impurities cause deterioration of the amine solution The question of solution deterioration by reaction with various gas impurities is discussed in detail in Chapter 3 this discussion is concerned primarily with removal of carbonyl sulfide, carbon disulfide, and mercaptans from the gas by amine solutions. 

Results from one year of continuous operation of a plant ueating about 500,000 cf/d of coal gas are given in Table 13-13. Removal efficiencies for individual sulfur compounds in the same installation are given in Table 13-14. The data show that the total organic sulfur removal efficiency of the process depended strongly on the type of. sulfur compounds present. The process was quite efficient for carbon disulfide removal much less so for carbonyl sulfide and very poor for thiophene. 

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