以焦油中低附加值产品工业二甲酚后馏分为原料，用精馏的方法可以得到质量分数>95%的3，5-二甲酚高附加值产品。
The result shows that high valued 3,5-xylenol with a purity of over 95% can be extracted from industry level xylenol fraction by rectification.
反应产物经精馏分离后得到的产品纯度在99.8%以上。
The purity of the product after rectifying process could reach to 99.8%.
使用性能评定试验结果表明，焦化全馏分加氢后喷气燃料经过非加氢精制后其组成、橡胶相溶性、动态氧化热安定性、润滑性均可达到使用要求。
The evaluation of the service performance indicated that the indexes of composition, solubility with rubber, dynamic thermal-oxidative stability and lubricity all met the service requirements.
作者继开发石油馏分导热系数关联式后，利用国内外中平均沸点和相对密度分布范围很宽的各种石油馏分的大量实验数据，对关联式进行了考察。
A correlation equation developed by the author for calculating the thermal conductivity of petroleum fractions was investigated using the measured data of various petroleum fractions.
用氢氧化钠中和反应混合物后，再用反应前馏分、水和甲醇先后洗涤，烘干后粉碎即得高性能产品。
More fine properties of products could be gained by adding sodium hydroxide as neutralization process, and using water and methanol in sequence to purify product.
对于过滤后得到的滤液及洗涤结晶体后得到的洗液，可以分别经过蒸馏分离，得到可以再次使用的溶剂和洗涤剂以及含砷量高的余量黄磷。
The resultant filtrate and washing liquid are distilled and separated separately to obtain solvent and washing agent as well as yellow phosphorus with high arsenic content for reuse.
煤焦油经管式炉蒸馏后，酚油，洗油和萘油馏分组成的三混馏分再经过洗涤后获得。
Distill coal tar in a tube furnace to generate 3 mix oil , and obtain crude phenol from washed 3 mix oil .
煤焦油经管式炉蒸馏后，酚油，洗油和萘油馏分组成的三混馏分再经过洗涤后获得。
Distill coal tar in a tube furnace to generate 3 mix oil , and obtain crude phenol from washed 3 mix oil .
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