国产在线气相色谱仪分析天然气组成的适应性研究  

Adaptability research of domestic on-line gas chromatograph for analyzing natural gas composition

作　　者：曾文平 周理[1,2] 胡仲可 潘义[4] 王伟杰 王晓琴[1,2] 林俊杰 吴凯骐[5] Zeng Wenping;Zhou Li;Hu Zhongke;Pan Yi;Wang Weijie;Wang Xiaoqin;Lin Junjie;Wu Kaiqi(Research Institute of Natural Gas Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;Key Laboratory of Natural Gas Quality Control and Energy Measurement,CNPC,Chengdu,Sichuan,China;Sichuan Huayou Group Corporation Limited,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;National Institute of Measurement and Testing Technology,Chengdu,Sichuan,China;China Petroleum Engineering&Construction Corporation,Southwest Company,Chengdu,Sichuan,China)

机构地区：[1]中国石油西南油气田公司天然气研究院 [2]中国石油天然气集团公司质量控制和能量计量重点实验室 [3]中国石油西南油气田公司四川华油集团有限责任公司 [4]中国测试技术研究院 [5]中国石油工程建设有限公司西南分公司

出　　处：《石油与天然气化工》2023年第2期116-122,共7页Chemical engineering of oil & gas

基　　金：2018年四川省重大科技专项项目“天然气能量计量在线色谱仪应用开发及示范”(2018TZDX0008)。

摘　　要：目的在线气相色谱仪是实现天然气能量计量的关键分析设备,开展国产在线气相色谱仪的适应性研究,对打破进口在线气相色谱仪的技术壁垒,实现仪器设备的国产化具有重要意义。方法采用在线气相色谱仪样机分析气体标准物质及开展现场应用试验,分析评价了样机的有效性、分离度、重复性、准确性及稳定性等技术指标。结果样机能够有效分析气体中N_(2)、CO_(2)、C_(1)~C_(6)烃类组分含量,分析周期<2 min;正丁烷和异丁烷的分离度R=2.0,定量重复性RSD定量≤1.0%;4 h运行稳定性≤3.0%;与进口在线气相色谱仪分析实际天然气样品获得高位发热量的相对偏差≤0.1%。结论研发的样机基本能够满足天然气能量计量的需要,为我国全面实施天然气能量计量,实现在线气相色谱仪的国产化提供了技术参考。Objective On-line gas chromatograph is the key analysis equipment to realize natural gas energy measurement.It is of great significance to carry out the research on the adaptability of domestic on-line gas chromatograph,and to break the technical barriers of imported on-line gas chromatograph and to realize the localization of instruments and equipment.Method The gas standard material was analyzed by on-line gas chromatograph and the field application test was carried out,analyze and evaluate the effectiveness,separation degree,reproducibility,accuracy and stability of the prototype.Results The prototype can effectively analyze the content of N_(2)、CO_(2)、C_(1)~C_(6)hydrocarbon components in the gas,and the analysis period is not more than 2 min;resolution R=2.0 for iC 4 and nC 4,quantitative repeatability RSD≤1.0%for nC 4;the stability of the prototype operation for 4 hours is 3.0%;the relative deviation from the actual natural gas samples obtained by imported on-line gas chromatograph is not more than 0.1%.Conclusions The developed prototype can basically meet the needs of natural gas energy measurement,which provides a technical reference for the comprehensive implementation of natural gas energy measurement and the localization of on-line gas chromatograph in China.

关 键 词：天然气 在线气相色谱仪 样机 性能评价 适应性 

分 类 号：TE642[石油与天然气工程—油气加工工程] O657.71[理学—分析化学]