关键词: 硫回收装置, 多功能, CO变换, 加氢催化剂, 反应温度, 反应空速, 活性, 有机硫

Abstract:

Puguang gas field is the first high sulfur gas field successfully developed in China. The natural gas has a high carbon sulfur ratio in the feed gas, and the regenerated acidic gas has a high CO₂ content. It will react to generate CO, which in turn generates organic compounds such as COS and CS₂, becoming one of the key factors affecting the emission standards of the equipment. Claus tail gas hydrogenation catalyst with CO changing function was developed and successfully applied to the 200,000 TPY sulfur recovery unit of the natural gas purification plant in Puguang Branch Company, SINOPEC Zhongyuan Oilfield. According to industrial application data, the CO conversion rate of the hydrogenation reactor process gas is more than 90%, the consumption of natural gas for hydrogen production in the on-line furnace is reduced by about 279 m³/h. The hydrogenation activity and organic sulfur hydrolysis activity both reach over 99%. The SO₂ emission concentration in the flue gas is reduced to less than 200 mg/m³, and the CO emission concentration is reduced by 90%, which has good economic and environmental benefits.

Key words: sulfur recovery unit, multi functional, CO conversion function, hydrogenation catalyst, reaction temperature, gas hourly space velocity(ghsv), catalyst activity, organic sulfur