天然气净化装置定排扩容器乏汽回收技术改造  

Technical innovation of exhaust steam recovery technology for periodic blowdown flash tank of natural gas purification unit

作　　者：胡海光 马永波[2] HU Haiguang;MA Yongbo(School of Finance and Economics,Chongqing Business Vocational College,Chongqing,401331,China;SINOPEC Dazhou Natural Gas Purification Co.,Ltd.,Dazhou,Sichuan,635000,China)

机构地区：[1]重庆商务职业学院财经管理学院,重庆401331 [2]中国石化达州天然气净化有限公司,四川达州635000

出　　处：《天然气与石油》2022年第5期116-120,共5页Natural Gas and Oil

摘　　要：定排扩容器是将锅炉中的水和蒸汽进行分离的关键设备,在天然气净化装置中使用广泛。随着某天然气净化厂进入开发后期,净化装置部分设备老化,导致在正常生产中时常出现定排扩容器乏汽外排泄漏现象,造成能耗浪费、设备腐蚀、影响标准化生产等问题。为解决以上生产实际问题,对该厂6套净化装置的定排扩容器运行情况进行分析、比对,明确存在问题,提出对定排扩容器的工艺流程进行改造,对部分附件设备及工艺流程进行升级、优化。改造结果表明:可实现对外排乏汽的回收利用,节约循环水约110 t/d,节能效果显著,具有较好的经济效益和社会效益。最后从设备材质、工艺参数、日常管理方面总结出相关措施及建议,可在行业内的其他净化装置推广应用。The periodic blowdown flash tank is the key equipment to separate water and steam from the boiler.It is widely used in the natural gas purification plant.A natural gas purification plant enters the late stage of production development,some of the purification equipment has aged,resulting in frequent steam leakage during routine production,leading to equipment corrosion and perforation,high energy consumption,impact on routine production and other problems.In order to solve the above actual production problems,this paper analyzed and compared the operation data of the periodic blowdown flash tank in the 6 trains of processing facilities in this plant.After the existing problems were identified,this paper proposed several technical innovation measures for periodic blowdown flash tank process,including upgrading or replacing some associated equipment and process flow scheme.Suggestions on materials upgrading,process parameters adjustment,routine management and control,etc.are given based on the research.The results show that after modification based on the technical innovation,the exhaust steam can be recovered and reused,and the circulating water can be reduced by about 110 t/d.The upgrades and modifications show significant impact on energy saving,and has good economic and social effect.This research result can be applied in similar purification facilities in the industry.

关 键 词：净化装置 定排扩容器 乏汽回收 节能降耗 技术改造 

分 类 号：TE96[石油与天然气工程—石油机械设备]