天然气三甘醇脱水装置溶剂损耗分析

高杰; 何剑; 赵江涵; 邱静; 陈亮; 王伟; 陈文彪; 黄茜

doi:10.3969/j.issn.1007-3426.2025.03.005

天然气三甘醇脱水装置溶剂损耗分析

Analysis of solvent loss in natural gas triethylene glycol dehydration unit

摘要

摘要:
目的降低三甘醇脱水工艺的三甘醇损耗量。
方法基于实际生产中的三甘醇脱水工艺流程，利用多种模拟分析软件开展天然气三甘醇脱水处理工艺全过程溶剂损耗分析，确定溶剂损耗部位，分析不同操作条件下三甘醇携带损耗的动态特征。
结果吸收塔是三甘醇损耗的主要部位，占总损耗的77.87%，模拟损耗量为6.03 mg/m³。优化后，吸收塔丝网除沫器捕集效率提升至60.32%，产品气分离器的分离效率提升至93.10%。
结论三甘醇的损耗主要发生在吸收塔中，优化吸收塔的丝网除沫器和产品气分离器的结构可以显著降低三甘醇的携带损耗。建议加强日常运行管理，改进设备结构，以提高脱水装置的操作效率和经济性。

Abstract:
Objective The aim is to reduce the triethylene glycol (TEG) loss in the TEG dehydration process.
Method Based on the TEG dehydration process flow of actual production, various simulation analysis softwares were used to analyze the solvent loss in the whole process of natural gas TEG dehydration process. The locations of solvent loss were identified, and the dynamic characteristics of TEG carryover loss under different operating conditions were analyzed.
Result The absorber was identified as the primary location of TEG loss, accounting for 77.87% of the total loss, with a simulated loss of 6.03 mg/m³. After optimization, the capture efficiency of the mesh demister of absorber was improved to 60.32%, and the separation efficiency of the product gas separator was improved to 93.10%.
Conclusion The majority of TEG loss occurs in the absorber. Optimizing the structure of the mesh demister and the product gas separator can significantly reduce TEG carryover loss. It is recommended to strengthen daily operation management and improve equipment structure to improve the operational efficiency and economic performance of the dehydration unit.

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