Study on the catalysts of sulfur-odor gas pollution treatment

Abstract

Aiming at the characteristics and current status of refineries’ odor pollution, the sulfur containing odor gas–hydrogen sulfide was chosen as a typical object and treated by using the adsorption-catalytic oxidation method in the laboratory. This research focused on the preparation of adsorptive catalyst with high sulfur capacity at room temperature. The results showed that the sulfur capacity of walnut shell activated carbon (WSAC) was up to 351 mg/g, specific surface area was 2,030 m2/g, and the pore volume of microspores was 0.608 mL/g. By comparison with the commercial activated carbon, it is found that the specific surface area, the sulfur capacity, and iodine value of WSAC have been improved significantly. The sulfur capacity of WSAC modified by KIO3 with mass fraction of 1 % was up to 459 mg/g.