摘要
含硫天然气中的硫化合物具有毒性和环境污染风险,严重影响天然气的安全生产、净化、运输和交易,通过气相色谱法对含硫天然气进行检测,可以实现对天然气中硫化合物含量的精准监控,但目前缺乏对天然气硫化合物检测的气相色谱技术的系统性分析总结。为此,在简述气相色谱技术分离原理的基础上,系统总结了气相色谱技术在天然气硫化合物检测方面的应用进展和具体案例,最后提出了气相色谱技术在含硫天然气检测中面临的挑战和发展趋势。研究结果表明:①天然气硫化合物气相色谱进样技术中的自动进样和前处理,以及进样前杂质的处理和压力、流量、温度的稳定控制,有利于保障分析数据稳定性,有待继续研究;②目前已有多种型号的气相色谱柱可用于硫化合物的分离分析,新材料的兴起和分析方法的优化将进一步改善硫化合物的分离检测;③热导检测器(TCD)、火焰光度检测器(FPD)和硫化学发光检测器(SCD)是目前最成熟的用于天然气硫化合物的气相色谱检测技术,多种检测器的联用和新型检测器的引入拓宽了气相色谱在天然气检测中的使用;④标准化建设推动了气相色谱技术的发展,针对天然气硫化合物气相色谱的国内外标准在持续更新完善中。结论认为,气相色谱技术仍处于持续发展和突破阶段,未来应注重提升重复性、准确性,推动自动化、智能化和集成便捷性,持续完善气相色谱技术体系,为天然气质量控制和安全利用提供有力保障。
Sulfur compounds in sulfur-containing natural gas are toxic and pose environmental pollution risks,so they have a great impact on the safe production,purification,transportation and trading of natural gas.The application of gas chromatography to sulfur-containing natural gas detection can accurately monitor sulfur compound content of natural gas.So far,however,the gas chromatography technologies for detecting sulfur compounds in natural gas have not been systematically analyzed and summarized.After introducing the separation principles of gas chromatography technology briefly,this paper systematically summarizes the application progress and specific cases of gas chromatography technologies in sulfur compound detection in natural gas,and points out the challenges and development trends of gas chromatography technology in the detection of sulfur-containing natural gas.The following results are obtained.First,the automatic injection and pretreatment of gas chromatography injection technology for sulfur compounds in natural gas and the impurity treatment and stable pressure,flow rate and temperature control before injection are beneficial for ensuring the stability of analytical data and need further research.Second,there are currently multiple models of gas chromatography columns available for the separation and analysis of sulfur compounds,and the emergence of new materials and the optimization of analysis methods will further improve the separation and detection of sulfur compounds.Third,thermal conductivity detector(TCD),flame photometric detector(FPD)and sulfur chemiluminescence detector(SCD)are currently the most mature gas chromatography technologies used for the detection of sulfur compounds in natural gas.The combination of multiple detectors and the introduction of new detectors have expanded the application of gas chromatography in natural gas detection.Fourth,standardization construction promotes the development of gas chromatography technologies,and domestic and foreign standards for gas chromatography of sulfur compounds in natural gas are continuously updated and improved.In conclusion,gas chromatography technologies are still in the stage of continuous development and breakthrough.In the future,attention should be paid to improving repeatability and accuracy,promoting automation,intelligence and integration convenience,and continuously improving the gas chromatography technology system,so as to provide strong guarantees for the quality control and safe utilization of natural gas.
作者
陈梓浔
周理
吴姝虹
黄灵
张镨
CHEN Zixun;ZHOU Li;WU Shuhong;HUANG Ling;ZHANG Pu(Natural Gas Research Institute,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan 610051,China;Key Laboratoryof Natural Gas Quality Control and Energy Measurement,State Administration for Market Regulation,Chengdu,Sichuan 610213,China;CNPC Key Laboratory of Natural Gas Quality Control and Energy Measurement,Chengdu,Sichuan 610213,China)
出处
《天然气工业》
北大核心
2025年第5期150-161,共12页
Natural Gas Industry
基金
中国石油西南油气田公司博士后工作站科学研究与技术开发项目“天然气硫化物分析用色谱固定相分离机理及设计制备研究”(编号:2024D108-01-01)。
关键词
气相色谱
天然气硫化合物
检测
新材料
研究进展
展望
Gas chromatography
Sulfur compounds in natural gas
Detection
New material
Research progress
Prospect
