分馏的

The fraction of benzyl benzoate and fluorenone were enriched from benzoic acid residua by flash distillation,then separated by vacuum batch distillation,so the recovery of benzoic acid residua was implemented.

依据相关文献确定了通过闪蒸法富集苯甲酸釜残液中的苯甲酸苄酯和芴酮馏分，其后减压间歇精馏分离富集馏分，实现了苯甲酸釜残液的回收利用。

ReduceMain fractionation tower,s press drop can enhance inlet pressure of compressor.At the condition of compress ratio is invariable,it can improve system pressure、increase NTS of stabilization tower、reduce stabilize gasoline C4 ratio、improve system absorbent ability.Generic design can hardly reach the best NTS of absorber,so adding absorber,NTS can obviously increase effect so absorb. Because adding absorber'NTS can reduce system dependence on other factors,and it can not lead to the increase of the energy,so it is the best economic method of improving absorb operation effect. For desorber,double feed stream is a economical means but it need adding the NTS.

降低主分馏塔的压降，可以提高压缩机的入口压力，在压缩比不变的情况下提高系统压力；增加稳定塔理论板数，可以降低稳定汽油中C4的含量，系统的吸收效果改善；一般的设计和吸收塔的最佳板数相距较大，所以改造吸收塔的理论板数，它对提高吸收效果往往最显著，又因为改善吸收塔的理论板数会降低系统对其它因素的依赖程度，而且改善它并不增加能耗，所以改造它对提高吸收效果又是最经济的手段之一；对于解吸塔来说，双股进料的工艺很有经济效益，但它需要增加理论板数来实现。

Math ActivityMaker: Fractions creates instant worksheets for Greatest Common Factor, Least Common Multiple, Adding, Subtracting, Multiplying, and Dividing Fractions, Reducing Fractions, Greater Than/ Less Than, Value-Matching, Fraction Strips, and Fraction Fill-Ins.

数学activitymaker ：馏分造成即时的工作，为最大的共同因素，最小公倍数，加入，减去，乘以，除以组分，减少馏分，大於/少於，价值匹配，分数条，和分数填写程式。

The pyrolysis performance of naphtha and light diesel oil from crude oil of Kazakhstan was carried out.

对蒸馏所得的石脑油馏分和轻柴油馏分进行了裂解性能评价。

The properties of light fractions (including naphtha, jet fuel and light hydrogenated lube base oil) from the 300 kt/a lube isodewaxing unit of SINOPEC Shanghai Gaoqiao Company were reviewed and a proposal for optimizing utilization of these fractions was presented, such as producing AR petroleum ether from naphtha; superior odorless kerosene and rolling oil of aluminum foil from jet fuel fraction; transformer oil, high quality white oil and jelly wax from light base oil fraction.

对中国石化上海高桥分公司300kt/a润滑油异构脱蜡装置生产的石脑油馏分、喷气燃料馏分及轻质加氢基础油性质进行试验分析，提出合理的利用方案，其中石脑油馏分可生产分析纯石油醚，喷气燃料馏分可生产特种煤油与铝箔轧制油，轻质加氢基础油可生产变压器油、高档白油以及果冻蜡。

The experiments for determining the mechanism and kinetics of catalytic pyrolysis reaction for a simple petroleum feedstock, were carried out in a batch micro-reactor using Daqing light gas oil. The results showed that carbonium and free radical reactions were the key reactions in catalytic pyrolysis. The carbonium ions were induced by catalytic reaction, whereas free radical reaction was predominantly due to thermal cracking.

首先在重油微反装置上考察大庆减压馏分油催化裂解反应产品分布，并将反应结果与相同温度范围内的热裂解反应相比较，二者的产品分布随温度等操作参数的变化规律明显不同，进而推断催化裂解反应过程为正碳离子反应机理和自由基反应机理并存；并建立了大庆减压馏分油催化裂解消失动力学模型，求得了化学反应速率常数。

And then is the 2 to 4 ring PAH, in which the content of naphthyl- and phenanthryl- substance is more than 70%.

轻质馏分脂肪烃主要为环烯烃和二烯烃等烯烃，烷烃中以环烷烃居多；中质以上馏分的脂肪烃主要由C_(13)～C_(32)的正构烷烃组成。

In the dissertation, it is systematically demonstrated that soft sensing technology's background, relating theories and skills, problems in application and their solutions. On this basis, some new methods about data processing, on-line tuning are proposed, and an generalized soft sensing software package is developed, which get successful applications in Gas Separator Unit and FCCU of oil refinery.

本文系统阐述了软测量问题的产生的背景、软测量问题的有关理论和方法，并讨论了软测量技术在实际应用过程中所遇到的问题及其解决方案，提出了数据处理，模型实时校正、应用实施等方面的一些新方法，建立了通用的软测量软件包，并在炼油厂气体分馏装置、催化裂化装置获得成功的应用。

Organic Neroli Distillate Soothing neroli distillate softens skin, calms irritated skin and improves skin's capillary function .

有机橙花馏分油-舒缓橙花馏分油滋润皮肤，镇静刺激的皮肤，改善皮肤的毛细血管功能。

Burning a pole results in painful chemical burns because the installer usually winds up with a chest and legs full of splinters coated with creosote, a coal tar distillate used to preserve the wooden pole.

燃烧电线杆会导致化学烧伤，非常疼痛，因为安装人员通常会卷起，胸部和腿部沾满涂了木馏油的碎片，木馏油是一种煤焦油馏分，用来保护木制电线杆的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。