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统计平均结构
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     The component characteristics and statistical structure of the 4th(230~270 ℃) and 5th (270~340 ℃) distiled fractions of a kind of low temperature tar were studied using GC MS. The studies on component characteristics showed that (1) the compounds in the distilled fractions can be classified into paraffinic compounds and non paraffinic compounds.
     用GCMS研究了低温焦油第4 和第5 蒸馏馏分的组成和统计平均结构。 研究表明, 平朔煤低温焦油第4(230~270 ℃)和第5(270 ~340 ℃) 蒸馏馏分,由脂肪烃类化合物和非脂肪烃类化合物两大类组成。
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The component characteristics and statistical structure of the 4th(230~270 ℃) and 5th (270~340 ℃) distiled fractions of a kind of low temperature tar were studied using GC MS. The studies on component characteristics showed that (1) the compounds in the distilled fractions can be classified into paraffinic compounds and non paraffinic compounds. The average molecular weight of the paraffinic compounds for 4th distilled fraction in which there is a few olefinic compounds, and 5th distilled fraction...

The component characteristics and statistical structure of the 4th(230~270 ℃) and 5th (270~340 ℃) distiled fractions of a kind of low temperature tar were studied using GC MS. The studies on component characteristics showed that (1) the compounds in the distilled fractions can be classified into paraffinic compounds and non paraffinic compounds. The average molecular weight of the paraffinic compounds for 4th distilled fraction in which there is a few olefinic compounds, and 5th distilled fraction is 280.2 and 296.7 respectively. (2) the non paraffinic compounds in the 4th distilled fraction was mainly dominated by phenols 22.44 % and substituted naphthalene 62.73 %. The non paraffinic compounds in the 5th distilled fraction was mainly composed of phenols 8.69 %, aromatic radical alcohol 42.53 % and polyalkyl and alkosy substituted aromatic 28.67 %. The details of the components in the specific tar have made a base for the utilization of the tar. In the studies on the statistical structure two statistical average molecular models were constructed. They are dimethyl phenylindene and dimethyl naphthalenol for non PC of 4th and 5th distilled fractions.

用GCMS研究了低温焦油第4 和第5 蒸馏馏分的组成和统计平均结构。研究表明, 平朔煤低温焦油第4(230~270 ℃)和第5(270 ~340 ℃) 蒸馏馏分,由脂肪烃类化合物和非脂肪烃类化合物两大类组成。第4 和第5 馏分的平均分子量分别为280 .2 和296 .7。第4 蒸馏馏分中的非脂肪烃化合物主要由酚类22 .44 % 和取代萘酚62 .73 % 组成。第5 蒸馏馏分中的非脂肪烃化合物主要由酚类8 .69 % ,芳香基醇42.53 % 及多烷基和烷氧基取代的芳香化合物28.67 % 组成。第4 和第5 馏分的统计平均结构分别为羟基二甲基茚和二甲基萘酚。

 
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