炼油装置停工检修密闭吹扫的实践

摘要

In the shutdown maintenance of refinery process units,a large amount of waste gas,waste water and waste oil will be produced,which can not meet the increasingly stricter environmental requirements if they are not purged under airtight conditions.In its shutdown for maintenance of refinery units,SINOPEC Guangzhou Petrochemical Company,through analysis of the factors affecting the air-tight purging,completed the air-tight purging measures,such as addition of oil and water blow-down processes,addition of diesel recycle cleaning,proper arrangement of shutdown procedures,control of consumptions of steam and nitrogen,control of flare gas emission and temperature in unit shutdown,development of quantitative indicators,control of production of waste water and waste oil,reasonable allocation of storage capacity of waster water and waste oil,etc.The airtight purging in shutdown was successfully implemented.All blow-downs and emissions from purging meet the specifications for environmental protection.%受炼油企业生产特性影响,炼油装置停工检修过程中会产生较多废气、污水和污油,如果不能实现密闭吹扫,将不能满足日益严格的环保要求.中国石油化工股份有限公司广州分公司炼油装置停工检修中,通过分析影响密闭吹扫因素,完善密闭吹扫措施,如增加退油、退水流程,增加柴油循环清洗,统筹安排装置停工顺序,控制蒸汽、氮气消耗量,控制停工过程火炬气排放量及温度,制订量化指标,控制污水、污油产生量,合理调配污水、污油储存能力等,成功实现了停工过程的密闭吹扫,保证了达标排放,满足了环保要求.