The catalytic incineration of (CH3)(2)S and its mixture with CH3SH over a Pt/Al2O3 catalyst

Catalytic incineration is one of the cost-effective technologies to solve t he troublesome volatile organic compounds (VOCs). However, some sulfur cont aining VOCs, such as dimethyl sulfide, may deactivate the Pt catalyst that is commonly used in the catalytic incineration process. This paper provides information on the poisoning effect of (CH3)(2)S The catalytic incineratio n of (CH3)(2)S, typically emitted from the petrochemical industry, over a P t/Al2O3 fixed bed catalytic reactor was studied. The effects of operating p arameters including inlet temperature, space velocity, (CH3)(2)S concentrat ion, O-2 concentration and catalyst size were characterized. Catalytic inci neration on a mixture of (CH3)(2)S with CH3SH was also tested. The results show that the conversions of (CH3)(2)S increase as the inlet temperature in creases and the space velocity decreases. The higher the (CH3)(2)S concentr ation is, the lower its conversion is. The O-2 concentration has a positive effect on the conversion of (CH3)(2)S. (CH3)(2)S has a poisoning effect on the Pt/Al2O3 catalyst, especially at lower temperatures. The conversion of (CH3)(2)S is significantly suppressed by the existence of CH3SH. (C) 2001 Elsevier Science B.V. All rights reserved.