查询词典 butadiene

Also, ethanol is an octane enhancer, which can reduce emissions of cancer causing benzene and butadiene, by more than fifty percent.

除此之外，乙醇还可以增加燃料的辛烷值，从而可以减少50%以上的由于燃烧不完全而产生的有害物质的排放。

The property of SEBS was affected by relative molecular mass, mass ratio of styrene to butadiene, content of 1,2 unit and degree of hydrogenation.

研究了聚合物相对分子质量、苯乙烯与丁二烯的质量比、SBS的PB嵌段中1，2-结构质量分数和氮化度对SEBS性能的影响。

In chapter 3, in view of the control problems of the distillation columns in the butadiene plant, the advanced control strategy based on soft-sensing technology is designed, and the implementing method based on OPC technology is proposed. Firstly, the control system is reconstructed.

第3 章针对某石化企业丁二烯装置的精馏工段中组分浓度的控制难题，设计了基于软测量技术的先进控制方案，提出了基于OPC 技术的先进控制实现方法。

Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.

在石油化学工业中所用的许多原料是不饱和烃类，如乙烯、丙烯、丁烯和丁二烯。

The oxidative dehydrogenation of butene to butadiene was carried out in uniform membrane reactor and non-uniform membrane reactor, respectively.

对无机膜控氧反应器的优化进行了探讨，提出优化依据，并在自制的均布膜反应器及非均布膜反应器中，进行丁烯氧化脱氢制丁二烯反应的研究。

The effects of temperature, feed flow rate and O2/C4H8 ratio on butene conversion and selectivity for butadiene were systematically studied.

系统地考察了反应温度、进料量、氧／烃比对丁烯转化率及丁二烯选择性的影响。

"Rare in nature, olefins are obtained by the cracking of petroleum fractions at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemical s industry."

烯烃在自然界很稀少，但在石油裂解成汽油过程中可大量生成，低级的单烯烃已成为庞大的石油化学工业的基础。

The effects of degree of carbon deposition and regeneration,catalyst impurities,iso butylene impurity in feed stock as well as operational parameters on carbon deposition of W 201 catalyst for oxydehydrogenation of butene to butadiene have been studied.

从工业应用出发，研究了丁烯氧化脱氢制丁二烯W－201催化剂的结炭数量及再生、催化剂杂质元素分析、原料中异丁烯杂质及操作参数对催化剂结炭的影响等。

"Rare in nature, olefins are obtained by the cracking of petroleum fraction s at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemicals industry."

烯烃在自然界很稀少，但在石油裂解成汽油过程中可大量生成，低级的单烯烃已成为庞大的石油化学工业的基础。

"Rare in nature, olefins are obtained by the cracking of petroleum fractions at high temperatures. The simplest ones (ethylene, propylene, butylene, butadiene, and isoprene) are the basis of the petrochemicals industry."

烯烃在自然界很稀少，但在石油裂解成汽油过程中可大量生成，低级的单烯烃已成为庞大的石油化学工业的基础。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。