^1H NMR定量分析天然气中硫化氢含量的方法研究  

Study on method of quantitative analysis of H2S in natural gas by ^1H NMR spectroscopy

作　　者：全志利[1] 杨亚东 

机构地区：[1]天津城建大学能源与安全工程学院,天津300384 [2]天津市塘沽燃气有限公司,天津300384

出　　处：《实验技术与管理》2015年第4期39-43,共5页Experimental Technology and Management

摘　　要：以苯甲醇作为内标物,N-甲基二乙醇胺(MDEA)作为吸收介质,研究核磁共振氢谱(1 H NMR)测定天然气中硫化氢(H2S)含量的方法。首先通过分析MDEA的1 H NMR谱图,考察了核磁波谱仪的最佳参数为:室温,匀场3次,脉冲宽度为35μs,延迟时间为5s,扫描次数为100;然后通过比较H2S峰面积与内标特征峰面积,根据公式计算H2S含量。最后比较了1 H NMR定量方法与碘量法的测定结果,证实1 H NMR法测定结果可以作为天然气H2S含量测定的标准方法。Taking pyrazine as an internal standard and N-Methyldiethanolamine（MDEA）as the absorbing medium,a method is established to determine H2 S in natural gas using1 H nuclear magnetic resonance（1 H NMR）.First of all,through the analysis of the 1 H NMR spectra of MDEA,the optimal parameters including the pulse width,delay time and the number of scans are explored.The optimal parameters are as follows：room temperature,shimming 3,P1=35μs,D1=5s,and NS=100.Secondly,through comparison of the H2 S peak area and internal standard peak area,the content of H2 S is calculated according to the formula.Finally,whth comparison of the quantitative method of NMR with iodine quantity method,the result is obtained that 1 H NMR can be used for determination of H2 S in natural gas.

关 键 词：天然气 H2S定量分析 1H NMR 

分 类 号：TE642[石油与天然气工程—油气加工工程]