There are two method to measure the weight ratio of crude benzene.
测定粗苯重量比，有色谱法和蒸馏法两种方法，其中蒸馏法为仲裁方法。
Recovery of crude benzene is the coking plant production of intermediate products, refined workshop production of benzene, toluene, xylene and other products of raw materials.
回收粗苯是焦化厂生产的中间产品，是精制车间生产纯苯、甲苯、二甲苯等产品的原料。
The reasonable improvement of the lean oil technics in crude benzene tower and heat exchanger of lean and fat oil is introduced according to the practical conditions after reconstruction.
分析了浮头式列管换热器的故障现象及产生原因，提出改造方案，并根据改造后的实际情况将脱苯塔和贫富油换热器部分的贫油工艺进行了合理改进。
The plant has been under normal operation since the new technology was executed and the output of crude benzene increased. The effect of energy-saving and emission reducing has been remarkable.
新工艺投入生产以来，运行正常，粗苯产量得到提高，节能减排效果明显。
The surrounding area of the coke oven, the raw coal gas purification workshop and the coal tar and crude benzene processing workshop would be the most serious pollution area of the coking plant.
其中炼焦炉周边、荒煤气净化车间、焦油和粗苯加工车间是焦化厂污染最严重的区域。
"This is the first report that exposure to ethyl benzene, a compound present in crude oil, was associated with CHD," McCarver said, noting that more studies are needed to confirm the link.
McCarver说道，“这是对接触乙苯(原油中的一种化合物)与引发冠心病有关的第一份研究报告。”而事实上已不需要更多的研究来确认它们存在联系了。
Benzene, a chemical compound refined from crude oil, was found to cause leukemia in 1928 by two Italian doctors who detected the cancer in a worker exposed to benzene for five years.
苯是原油中提炼出来的化学合成物，1928年两个意大利医生检测到一名工人因长达五年的时间里暴露在苯环境中而患有癌症，他们发现苯可引发白血病。
So benzene and DMF from the some solvents separate crude anthracene.
因此，从这些溶剂中选出苯和DMF来进行分离粗葱。
The crude benzol is the byproduct of coking industry, by the purification of which chemical foundation raw materials such as benzene, toluene and xylene can be obtained.
焦化粗苯是炼焦工业的副产品，精制可得到苯、甲苯及二甲苯等化工基础原料。
Main products are anthracene, naphthalene, bitumen, crude carbolic acid, benzene, toluene and xylene etc.
主要产品有蒽、萘、沥青、粗酚、苯、甲苯、二甲苯等。
Main products are anthracene, naphthalene, bitumen, crude carbolic acid, benzene, toluene and xylene etc.
主要产品有蒽、萘、沥青、粗酚、苯、甲苯、二甲苯等。
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