某平台降压生产后三甘醇脱水系统参数优化研究  

Study on Parameter Optimization of Triglycerol Dehydration System after Antihypertensive Production of A Platform

作　　者：熊才 XIONG Cai(Shanghai Branch of CNOOC(China)Limited,Shanghai 200335,China)

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200335

出　　处：《化工管理》2023年第2期151-154,共4页Chemical Engineering Management

摘　　要：某平台为了充分利用井口能量达到减少能耗的目的,在湿气压缩机投用前,对天然气处理系统进行整体降压生产,降压生产实施后出现外输天然气水露点不合格的问题。为了使外输天然气水露点合格并研究平台降压生产后三甘醇脱水系统参数对外输天然气水露点的影响,在对降压生产导致外输天然气水露点不合格的主要原因进行分析的基础上,制定天然气处理系统流程改造和三甘醇脱水系统参数优化两个对策。在实施流程改造后,外输天然气水露点依旧较高,根据参数优化试验步骤,依次对天然气进入接触塔温度、三甘醇循环量及汽提气用量三个参数进行优化并得出其对外输天然气水露点的影响规律,最终优选出三甘醇脱水系统最佳参数组合,使得外输天然气水露点降至-24.3℃,每日节省电能138 kW·h,减少自耗气624 Sm3。In order to make full use of wellhead energy to reduce energy consumption, a platform depressurized the natural gas treatment system as a whole before the wet gas compressor was put into use. After the depressurization production, the water dew point of the exported natural gas was unqualified. In order to make the water dew point of the exported natural gas qualified and study the influence of the parameters of the triethylene glycol dehydration system on the water dew point of the exported natural gas after the platform depressurization production, based on the analysis of the main reasons for the unqualified water dew point of the exported natural gas caused by the depressurization production, two countermeasures were formulated, namely, the process modification of the natural gas treatment system and the optimization of the parameters of the triethylene glycol dehydration system. After the implementation of the process transformation, the water dew point of the exported natural gas is still high.According to the parameter optimization test steps, the temperature of the natural gas entering the contact tower, the amount of triethylene glycol circulation and the amount of stripping gas are optimized in turn, and the influence law of the water dew point of the exported natural gas is obtained. Finally, the optimal parameter combination of the triethylene glycol dehydration system is optimized, so that the water dew point of the exported natural gas is reduced to-24.3 ℃, saving 138 kW·h of electricity every day, consumable gas 624 Sm~3.

关 键 词：降压生产 三甘醇脱水 天然气水露点 参数优化 

分 类 号：TE868[石油与天然气工程—油气储运工程]