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对天然气和模拟气组分的分析,目前一般是采用3～4根色谱柱才可全部完成。为使天然气中惰性气体及模拟气中特殊气体有较好的分离,提高某些组分定量的准确性。减少繁琐的操作程序,我们实验对比了几种合成固定相,认为Chron osorb-102这种固定相较好。它的分离效能可代替以往的邻苯二甲酸二丁酯+β,β’-氧二丙腈和GDX-104柱。这样我们只采用两根柱子,两次进样,就可分析天然气和模拟气中的Ar、O_2、N_2、CH_4、CO、CO_2、C_2H_4、C|2H_6、H_2S、H_2O、C_3H_6、C_3H_8、iC_4H_(10)、丁烯-1+异丁烯、1,3-丁二烯、nC_4H_(10)、顺丁烯、iC_5H_(12)、nC_5H_(12)、C_6~+20个组分。若要分析He、H_2则需换载气另加一次进样。这样不但提高了工效,同时也由于Ar和O_2的分离,提高了氮含量定量的精度。
Analysis of natural gas and simulated gas components, the current general use of 3 to 4 columns can be completed. In order to make natural gas inert gas and simulated gas special gas better separation, improve the accuracy of certain components. Reduce cumbersome procedures, we experimentally compared several synthetic stationary phases, that Chron osorb-102 this phase is better. Its separation efficiency can replace the previous dibutyl phthalate + β, β’-oxydipropionitrile and GDX-104 column. In this way, we can analyze the contents of Ar, O2, N2, CH4, CO, CO2, C2H4, C | 2H6, H2S, H20, C3H6, C3H8, 10), butene-1 + isobutylene, 1,3-butadiene, nC_4H_ (10), cis-butene, iC_5H_ (12), nC_5H_ (12) and C_6 ~ + 20 components. To analyze He, H 2 requires a carrier gas plus one additional injection. This will not only improve the work efficiency, but also due to the separation of Ar and O_2, to improve the quantitative accuracy of nitrogen content.