分馏

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 temperature effect on the oil yield was discussed at first. Then, analytical work was carried out as follows: the ultimate analysis and physi-chemical analysis of the pyrolytic oil comprised a sketch of the fuel properties of the oil; Then, through the distillation analysis of the oil, the fraction composition of the "unrefined"oil was known. After that, a general knowledge of the aromaticity and saturation of the hydrocarbons in the oil was provided by the outcome of the FT-IR functional group analysis. Also, from the analysis, the form of the polar functional groups and their distribution in different fractions of the oil were learned.

文中首先对不同热解温度下热解油产率进行分析讨论，然后，针对热解油品质进行了一系列分析：通过元素组成和理化特性的分析，对热解油作为燃料特性有了一个大致了解；通过实沸点蒸馏分析，得到热解油作为一种未提炼油的馏分分布，并为后续热解油馏分的细入分析提供了前提；通过对热解全油和各窄馏分的FT-IR官能团分析，对热解油的芳香性、不饱和性有了整体的了解，并且清楚了热解油中的极性官能团存在型式及其在热解油不同馏分中的分布。

In addition, applications of dynamic feedforward feedback control to the continuously sterilized tower, the power-boiler and the fractionating column of crude oil have been investigated.

此外，还研究了连续消毒塔、动力锅炉和原油分馏塔的动态前馈-反馈控制，同时提出了应用动态前馈补偿克服由虚假被控信号所引起的反馈误动作和非标准型前馈控制。

From the analysis,we can understand the principle and process of the salt forming in fractional column by the assessment of fluid mechanics of tray. the simulation of flow path;plate tower;salt forming

从分析结果可以看出，通过核算塔盘流体力学可以定性地看出分馏塔结盐的原理和过程。

Introduction of C 4 food had strong effect on stable isotope metabolism (especially for stable nitrogen isotope) of plateau pikas.

介绍了同位素分馏的基本概念以及利用稳定同位素研究水体蒸发的基本原理。

The American Sugar Refining Co. was working on a new fractionation method which did not require alcohol and which might prove of great value if alcohol should become in short supply.

美国的精制糖公司正致力于研究一种新的分馏方法，该方法不需要酒精，如果酒精供不应求的话，可能证明具有很大的价值。

The results show that with the increase of operation severity, the content of the distillate heavier than 550℃ and the resin and asphaltene in the oil slurry are decreased obviously.

结果表明，随着操作苛刻度的提高，油浆中的馏分呈现出中间馏分增加，两端馏分降低的变化趋势，并且油浆中大于550℃馏分的含量明显减少，油浆中的胶质、沥青质含量减少。

MWV have several world-class business locations in China including:* Technical support centers in Shanghai and Shenzhen * A spray nozzle and pump plant in Wuxi * A folded carton converting and printing facility in Wuxi * Joint ventures for tall oil fractionation in Shaxian and for activated carbon production in Shaowu * Sales offices in Shanghai, Hong Kong and Taiwan * Sourcing centers for China in Shanghai, Hongkong, and Shenzhen.

MWV在中国的业务发展迅速，设立了多个世界级的商业布点，包括：*在上海和深圳设立了技术支持中心*在无锡开设了定量泵厂以及包装印刷工厂*在沙县成立了妥尔油分馏合资公司*在邵武成立了活性炭生产基地*在上海、香港和台湾设立了销售中心*在上海、香港、深圳均建立了采购中心

Sperm parameters, serum testosterone levels, fertility, histology and ultrastructure of the testis, haematology and serum clinical chemistry were evaluated to establish the safety and efficacy of the test substance.

测量精子参数、血清睾酮水平、生育率、睾丸组织学及超微结构、血液学及血清临床化学，以评价番木瓜种子甲醇分馏物的安全性和有效性。

Petrochemicals are broken down by cracking, during the refinement process, and are thus sensitive to heat process.

这是因为石油化学物质在提炼的过程中通过分馏而分解了，因此它对加热过程很敏感。

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。