关键词: 延迟焦化装置, 密闭除焦系统, S-CCHS, 水路系统, 焦路系统, 气路系统, 耐磨水泵, 粉焦含量, 冷切焦水系统

Abstract:

The application of “Safety and environmental protection type delayed coking closed decoking, transportation and storage complete technology”(S-CCHS) has realized the closed and clean operation of the whole process of petroleum coke treatment. The operation process has exposed issues such as a significant increase in coke powder content in the cold cut coke water systems, material sliding at the tail of each conveyor belt, poor cleaning effect of the conveyor belt, diffuse coke powder during loading, high equipment failure rate, which affect the safe and stable operation of the unit and have adverse effects on environmental protection. By optimizing the process of the cold cut coke water system, the coke powder content is reduced from 200 mg/L to 20～40 mg/L, and the coke powder content decreased significantly; by fully sealing the conveyor belt and quantitative silo, the problem of coke powder diffusing into the atmosphere has been fundamentally solved; by updating equipment with high failure rates and developing preventive maintenance plans, the failure rate of equipment on closed decoking sites has been effectively reduced. Through multiple measures, relevant issues have been successfully resolved, providing a reference for the application of similar technologies for closed decoking in delayed coking units.

Key words: delayed coking device, closed decoking system, S-CCHS, waterway system, coke system, air circuit system, wear resistant water pump;