高含硫天然气硫磺回收装置液硫沉积物分析及对策  

Analysis and countermeasures for sediment in liquid sulfur in sulfur recovery unit of high-sulfur natural gas

作　　者：常洪莉 王婷婷 程耀泽 CHANG Hongli;WANG Tingting;CHENG Yaoze(Engineering&Design Institute of CPOE,CNPC Offshore Engineering Company Limited,Beijing,China;Research Institute of Petroleum Exploration and Development,PetroChina,Beijing,China;State Key Laboratory of Enhanced Oil&Gas Recovery,PetroChina,Beijing,China)

机构地区：[1]中国石油海洋工程有限公司海洋工程设计院 [2]中国石油勘探开发研究院 [3]提高油气采收率全国重点实验室

出　　处：《石油与天然气化工》2024年第6期14-19,共6页Chemical engineering of oil & gas

基　　金：中国石油集团海洋工程有限公司2024年科研项目“150 m水深天然气综合处理平台设计关键技术研究”(202402-0301)。

摘　　要：目的某高含硫天然气硫磺回收装置液硫中出现大量黑色沉积物,进而引发了液硫储罐泵泵轴卡死、过滤网堵塞、硫磺造粒装置性能下降等一系列问题,严重影响到硫磺颗粒正常生产,需追溯其产生原因并提出解决措施。方法通过元素组分分析、工艺流程分析以及现场实验,对黑色沉积物的形成原因进行分析。结果分析认为液硫脱气催化剂的注入是造成黑色沉积物的根本原因,液硫储罐泵阴燃是黑色沉积物形成的促成因素。结论通过采取优化液硫处理操作参数、改善液硫脱气工艺、更换液体催化剂、引进固体催化剂脱气技术等措施,可从来源上消除黑色沉积物,并为现场解决硫生产问题提供操作和调整的参考。Objective A large number of black sediment appeared in the liquid sulfur of the sulfur recovery unit of a high-sulfur natural gas,which led to a series of problems such as the pump shaft stuck of the liquid sulfur storage tank,the blockage of the filter screen,and the performance degradation of the sulfur granulation unit,which seriously affected the normal production of sulfur particles.It is necessary to investigate the causes and develop corresponding countermeasures.Methods The formation causes of the black sediment were analyzed through elemental composition measurement,overall process analysis,and field experiment.Results The analysis results showed that the black sediment originate from the injection of liquid sulfur degassing catalyst,and the smolder of the liquid sulfur tank pump accelerates the formation of black sediment.Conclusions By optimizing the operating parameters of liquid sulfur treatment,improving the liquid sulfur degassing process,replacing the liquid catalyst,and introducing the solid catalyst degassing technology,the black sediment can be eliminated from the source,which can provide the operation and adjustment reference for solving the problems of sulfur production on site.

关 键 词：高含硫天然气 硫磺回收 液硫脱气催化剂 黑色沉积物 液硫储罐泵 阴燃 

分 类 号：TQ125.11[化学工程—无机化工] TE96[石油与天然气工程—石油机械设备]