混油处理装置分馏塔、换热器结垢原因分析及应对措施  

Cause analysis and countermeasures of scaling in fractionating tower and heat exchanger of mixed oil treatment unit

作　　者：杨斌 任爽 张华 Yang Bin;Ren Shuang;Zhang Hua(Southwest Pipeline Company of National Stone Pipe Network Group,Chengdu 641422)

机构地区：[1]国家管网集团西南管道公司,四川成都610213

出　　处：《石化技术》2024年第12期15-17,共3页Petrochemical Industry Technology

摘　　要：某输油站混油处理装置在运行过程中存在分馏塔内压力上升、管路流量减小的情况。在对装置检修过程中发现,随着混油分馏塔运行时间的延长,分馏塔内规整填料及塔盘粘附着大量有机聚合物,即产生了结垢,聚合物阻塞了填料空间的气液通道。分馏塔和换热器内有较为明显的结垢现象。针对混油处理装置分馏塔及换热器结垢现象,从汽油聚合物生成原理出发,结合分馏塔和换热器的结构因素等方面对结垢原因进行了分析。通过采取优化分馏塔填料类型、更换换热器管束、外加阻聚剂撬装置的方式等应对措施后,装置在运行过程中混油分馏效果明显改善,同时也确保了装置安全、平稳运行。During the operation of a mixed oil distillation unit at an oil transfer station,the pressure in the fractionation tower increased and the pipeline flow decreased.During the maintenance of the unit,it was found that as the operating time of the oil-mixed fractionation tower extended,a large amount of organic polymer adhered to the structured packing and trays in the fractionation tower,which caused fouling,and the polymer blocked the gas-liquid channels in the packing space.There is obvious fouling phenomenon in the fractionation tower and heat exchanger.In this paper,aiming at the fouling phenomenon of the fractionation tower and heat exchanger of the mixed oil distillation unit,the fouling causes are analyzed based on the principle of gasoline polymer formation and combined with the structural factors of the fractionation tower and heat exchanger.After taking countermeasures such as optimizing the type of fractionation tower packing,replacing heat exchanger tube bundles,and adding polymerization inhibitor skids,the mixed oil fractionation effect during operation of the unit was significantly improved,while ensuring the safe and smooth operation of the unit.

关 键 词：混油处理 分馏塔 填料 聚合物 结垢 阻聚剂 

分 类 号：TE9[石油与天然气工程—石油机械设备]