由于传统酸洗精制工艺的限制，焦化纯苯的含硫量高，其市场竞争力难以与石油苯相匹敌。
Due to the limitation of the traditional pickling process, the sulfur content of coking benzene is high, and its market competitiveness is difficult to match that of petroleum benzene.
但大部分厂家开始使用苯——一种由石油提炼的碳化氢来生产阿司匹林。
Yet most aspirin manufacturing begins with benzene, a hydrocarbon that is typically derived from petroleum products.
另一组重要的石油化学品原料是芳香烃化合物，主要是苯、甲苯和二甲苯，主要由催化重整制得。
Another important group of petrochemical raw materials are the aromatic compounds, principally benzene, toluene and xylenes, which are mainly produced by catalytic reforming.
油脂部分依次以石油醚、苯、氯仿、乙酸乙酯、丙酮、乙醇为淋洗剂进行洗脱，利用红外光谱、核磁共振光谱法对所分离组分进行了结构鉴定。
The compositions of grease were eluted with petroleum ether, benzene, chloroform, ethyl acetate, acetone, ethanol and characterized by means of IR and NMR spectroscopy.
传统油漆是以有机溶剂为稀释剂，需要消耗大量的石油资源，更含有苯、甲苯、二甲苯、甲醛、游离性TDI等有毒化学物质。
The traditional painting is an organic solvent as diluent, need to consume large amounts of oil resources, more contain toxic chemicals benzene, toluene, xylene, formaldehyde, free TDI.
伊朗有充足的石油资源，如果它能够生产自己的苯，那么在这条道路上就不会显得很脆弱。
If Iran, which has plenty of oil, produced its own benzene, it would not be vulnerable in this way.
地层水中苯的痕量分布作为油气藏分子示踪的研究，得到国外石油地球化学家们的广泛重视。
Geochemists paid more attention to the study of reservoir molecule tracing with the trace amount distribution of BTEX in formation water.
有机类保温材料主要来源于石油副产品，包括膨胀聚苯板(EPS)、挤塑聚苯板(XPS)、聚氨酯喷涂(SPU)以及聚苯颗粒等。
Organic kind of heat preservation material mainly comes from oil byproducts, including EPS (EPS), extruded polystyrene (XPS), polyurethane coating (SPU) and polystyrene particle etc.
不含石油化工，合成表面活性剂，发泡剂，甲醛或邻苯二甲酸盐。
Free of all petrochemical, synthetic surfactants, foaming agents, formaldehyde or phthalates.
同时改进了精制工艺，用石油醚-苯进行结晶代替高真空蒸馏，简化了工艺，有利于工业化生产。
Meanwhile the refining process was improved, using crystallization from petroleum-benzene instead of high vacuum distillation. The process was simplified for the benefit of industry production.
同时改进了精制工艺，用石油醚-苯进行结晶代替高真空蒸馏，简化了工艺，有利于工业化生产。
Meanwhile the refining process was improved, using crystallization from petroleum-benzene instead of high vacuum distillation. The process was simplified for the benefit of industry production.
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