Crude phenols extracted using organic solvent from the wastewater of a typical fixed-bed gasification process was used as a raw material, and the distillation range was analyzed. The wide and narrow fractions of the raw material derived from distillation range analysis were cut using a real boiling point distillation device. The phenolic compounds in the different fractions were then qualitatively and quantitatively analyzed by gas chromatography after derivatization pretreatment. The yield of the < 290 °C fraction was 68.50% (mass fraction). A total of 33 effective phenolic compounds were identified in this fraction, and the percentage of identified phenols was nearly 80%. The contents of eight phenolic compounds were high, with phenol being the most abundant (26.34%) followed by catechol (13.44%). The contents of the remaining six abundant phenols ranged from 4% to 8%. The sum of the contents of m-cresol and p-cresol exceeded 12%, and the content of 5-indenol was nearly 8%. The yield of the fraction rich in low-grade phenols (< 230 °C) was 35.40%. The content of phenol in this fraction was more than 40%, the total content of cresol was over 23%, and the total content of m-cresol and p-cresol was nearly 20%. At room temperature, the 235–245 °C and 245–260 °C fractions were white crystals in which the catechol content was approximately 50%, and the 5-indenol content was more than 10%. The contents of these two high-value-added phenolic compounds are low in typical coal tar, making them difficult to extract. However, due to their strong polarity and good water solubility, catechol and 5-indenol are enriched in gasification wastewater by water selection, allowing their further extraction.

以典型的固定床气化工艺废水中的有机溶剂为提取原料，以粗苯酚为原料，分析了蒸馏范围。使用真实沸点蒸馏装置将蒸馏范围分析得到的原料的宽馏分和窄馏分切开。衍生化预处理后，通过气相色谱定性和定量分析不同馏分中的酚类化合物。<290°C的馏分的产率为68.50％（质量分数）。在此馏分中总共鉴定出33种有效的酚类化合物，鉴定出的酚类百分比接近80％。八种酚类化合物含量高，苯酚含量最高（26.34％），其次是儿茶酚（13.44％）。其余六种丰富的酚的含量范围为4％至8％。间甲酚和对甲酚的含量之和超过12％，5-茚满醇的含量接近8％。富含低级酚（<230°C）的馏分的产率为35.40％。该馏分中的苯酚含量超过40％，甲酚的总含量超过23％，间甲酚和对甲酚的总含量接近20％。在室温下，235–245°C和245–260°C的馏分是白色晶体，其儿茶酚含量约为50％，5-茚满醇含量超过10％。在典型的煤焦油中，这两种高附加值的酚类化合物的含量较低，难以提取。但是，由于它们具有强极性和良好的水溶性，