南海某气田三甘醇接触塔液位控制波动处理  

Fluctuation Treatment of Liquid Level Control in the Triethylene Glycol Contact Tower of a Gas Field in the South China Sea

作　　者：包华瑜 Bao Huayu(Shenzhen Branch of CNOOC(China)Limited,Guangdong,518000)

机构地区：[1]中海石油(中国)有限公司深圳分公司,广东518000

出　　处：《当代化工研究》2024年第9期182-184,共3页Modern Chemical Research

摘　　要：南海某气田天然气脱水采用三甘醇脱水工艺,其主要设备三甘醇接触塔液位存在波动,与其相关的设备及参数也随之波动,影响了脱水系统的平稳运行。为提升三甘醇脱水效果,在排除常规原因后,深入分析三甘醇接触塔、闪蒸罐结构以及烃类对液位控制的影响,充分运用PID的调节规律,制定有效的控制策略。通过定期有效排烃、PID整定等措施,三甘醇接触塔液位实现了稳定控制。三甘醇脱水系统设备的有效排烃,以及存在烃类影响时采取合理的PID调节策略,有效提升了液位控制效果,可在采取同类天然气脱水工艺的气田推广。A natural gas field in the South China Sea adopts the triethylene glycol dehydration process for natural gas dehydration,the main equipment,the triethylene glycol contact tower,has fluctuations in liquid level,and related equipment and parameters also fluctuate,affecting the smooth operation of the dehydration system.In order to improve the dehydration effect of triethylene glycol,after eliminating conventional reasons,a thorough analysis of the structure of the triethylene glycol contact tower,flash tank,and the influence of hydrocarbons on liquid level control is conducted.The PID regulation law is fully utilized to develop effective control strategies.Through measures such as regular and effective hydrocarbon discharge and PID tuning,stable control of the liquid level in the triethylene glycol contact tower has been achieved.The effective hydrocarbon discharge of the triethylene glycol dehydration system equipment,as well as the adoption of a reasonable PID adjustment strategy in the presence of hydrocarbon influence,effectively improves the liquid level control effect and can be promoted in gas fields that adopt similar natural gas dehydration processes.

关 键 词：气田 天然气脱水 三甘醇 液位控制 波动 

分 类 号：TQ658.41[化学工程—精细化工]