分馏

Can be used in any type of middle distillate diesel fuel to improve engine performance.

可用于任何类型的中间馏分柴油燃料以提高发动机性能。

The product is made of superior petroleum distillate with scientific, reasonable and rigorous process.

本产品采用精选的石油馏分，经过科学合理的加工过程制造而成。

Distillate inventories now cover almost 49 days of supply against about 29 days at this time last year.

馏分油库存目前相当于将近49天的供应量，而上年同期只相当于大约29天的供应量。

Looking ahead, middle distillate and gasoline stocks stand at comfortable levels.

展望未来，中馏分成品油和汽油储备将处于令人满意的水平。

Stocks of distillate, including diesel, fell, but remain 30% above the five-year average.

包括柴油在内的馏分油库存量出现了下降，但仍比五年平均水平高出了30%。

Removing naphthenic acid from distillate is an important process in refining crude oil.

从馏分油中脱除环烷酸是石油炼制的一个重要步骤。

Reaction temperature, reaction time and different distillate oil on the properties of petroleum sulfonate were studied.

本文以发烟硫酸和三氧化硫作为磺化剂，选用重烷基苯或石油馏分油，在不同的工艺条件下进行磺化反应，摸索了反应物配比、反应温度、反应时间和不同原料等条件对合成产物的性能影响，得出反应物配比是影响磺化收率的重要因素。

Some suggestions are presented to improve the performance of the feed system, distiller,fraction collector system and cooling system of the molecular distillation equipment.

在此基础上，对分子蒸馏设备的进料系统、蒸馏器、馏分收集系统和冷却系统的进一步改进提出了一些建议。

Finally, two short-path distillation processes and one falling film evaporator are applied in the regeneration of waste lubricating oil. In the test, the diesel oil, gasoline and lubricating oil are distilled respectively, while the gelatinoid materials, asphaltene and carbon residue remain in the draft. The regenerative lubricating oil accords with the standards of base oil. And the recovery efficiency is up to 75 percent. The technology used in the test doesnt comprise processes like pickling and alkali neutralization, which would cause secondary pollution like acid draff and sulfur dioxide and so on. As a result of this, our technology is friendly to the environment.

最后，利用一级薄膜蒸发和两级短程蒸馏工艺对废润滑油进行了再生回收工业应用试验，将柴油、汽油等轻油以及润滑油馏分分别蒸馏出来，而大部分胶质、沥青质、碳垢存在于残渣中，试验得到的再生润滑油符合基础油的标准，回收率达到75％，达到废润滑油再生的目的；同时再生过程中没有酸洗、碱中和等工序，不产生酸渣、二氧化硫等二次污染，是一种清洁环保的废润滑油再生工艺。

ASTM D1159-01 Standard Test Method for Bromine Numbers of Petroleum Distillates and Commercial Aliphatic Olefins by Electrometric Titration.

电化学滴定法测量石油馏分及商用脂族烯烃的溴值试验方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。