Abstract:

According to the characteristics of high sulfur dioxide content and small gas volume of regenerator flue gas from S Zorb desulfurization device in Yongping Refinery of Shaanxi Yanchang Petroleum (Group) Co. Ltd., the organic catalytic treatment technology is employed. With this treatment method, the regenerator flue gas is introduced into a desulfurization unit, and then the sulfur dioxide is converted into ammonium sulfate after a series of reactions in absorption tower. After treatment the concentration of sulfur dioxide in the flue gas is reduced to below 100mg/m3, which is in line with the national emission standard. In addition, the appearance of ammonium sulfate product is white powder, no visible mechanical impurities, and the content of nitrogen, moisture and free acid are all in line with the by-product ammonium sulfate standard DL / T 808-2002.

Key words: organic catalysis, regenerated flue gas, desulfurization, ammonium sulfate