查询词典 distillation method

The fir essential oil was extracted from fir root by steam distillation method, from which cedrol was extracted, and then, cedrol methyl ether was synthesized based on cedrol.

以杉木根为原料通过水蒸气蒸馏法提取杉木精油，从杉木根精油中精制提取柏木脑，再以柏木脑为原料合成甲基柏木醚。

Two methods of distillation crystallization method and gas chromatography to determine the naphthalene content in coal tar oil were introduced.

介绍煤焦油中萘含量测定的两种方法：蒸馏结晶法和气相色谱法，对两种方法的优缺点及分析结果进行了对比。

Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

本文首先对线性溶剂化能关系进行了分析介绍，也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤，并将这些参数用于萃取精馏萃取剂的选择与优化；也通过线性溶剂化能关系式建立无限稀释活度系数预测模型，取得了一定的预测精度；将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究，通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂，测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据，并进行关联计算；以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究，取得大量塔内数据；通过选用合适的热力学模型，采用ASPEN中RadFrac模块对分离过程进行模拟研究，通过实验与模拟相结合，建立了C5分离的新工艺，为将来的工业化打下了坚实的基础。

The essential oil of coriander seed s was extracted by the simultaneous distillation extraction method.

采用同时蒸馏萃取的方法，对芫荽籽中的挥发油进行提取，并用GC/MS法对其进行分离和鉴定。

UNIFAC method was applied to the mathematical simulation of methanol distillation to calculate the equilibrium data of five component systems which include methanol, water, decane, isobutanol and ethanol.

将UNIFAC法应用于甲醇精馏过程数学模拟，计算甲醇-水-癸烷-异丁醇-乙醇五组分体系的汽液平衡数据，从理论上成功地解释了在甲醇精馏过程中加水萃取精馏的原理。

This method was compared with that of distillation decoloration.

结果表明，当α=0.05时，2种方法的测量结果没有明显差异。

The fault tree of atmospheric-vacuum distillation unit is established with deductive method on the theory of fault tree analysis.

根据故障树分析理论，用演绎法建立了常减压装置的失效故障树，通过定性分析找到影响稠油加工常减压装置安全性的主要因素，通过定量分析计算出引起失效的各事件的概率和重要度。

A method and apparatus for water degasification and distillation in an apparatus having a container (10) for a reservoir of water to be degassed and distilled, a boiler (12) adjoining the container and having a feed water conduit (22) connecting the container and boiler, a coiled tube condenser (27) within the container immersed in the water therein, the condenser coil having a vertically disposed longitudinal axis, a second conduit (24) in the boiler connecting the space above the water level therein to the inlet of the condenser so that steam flows from the boiler to the condenser, an outlet (29) on the condenser extending through a container wall for discharging the condensed steam as degassed distilled water, a heater (13) in the boiler for heating the water therein, a motor driven stirrer (101) axially of the coiled tube condenser and an ozone generating device (120) in the boiler for purifying the steam.

一种用于水脱气和蒸馏的方法和设备，该设备包括一容器(10)，该容器有一用于盛放待被脱气和蒸馏的水的贮池；还包括一与所述容器相连接的、其供水管(22)连接容器和沸腾器的沸腾器(12)；一在所述容器内、浸在其内的水中的线圈式管状冷凝器(27)，该冷凝器线圈有一竖直放置的纵向轴线；一在沸腾器内连接其内的水面上的空间与冷凝器的入口以使蒸气从沸腾器流至冷凝器的第二管道(24)；一在冷凝器上延伸穿过容器壁将经脱气和蒸馏的水作为已冷凝的蒸气排出的出口(29)；一在沸腾器内用于加热其内的水的加热器(13)；一与线圈式管状冷凝器同轴的马达驱动搅拌器(101)以及一在沸腾器内纯化蒸气的臭氧发生器(120)。

Molecular distillation technology is a new separate method and has been widely used in light industry.

分子蒸馏技术作为一种新兴的分离技术，在轻工行业得到越来越广泛的应用。

Extracted plant essential oil from Ferula sinkiangensis K. M. Shen, Cumimum cyminum and Trigonella foenum-graecum by method of wet distillation and researched the repellent effect to Tribolium castaneum.

方法］采用水蒸气蒸馏法，从阿魏、孜然粉、香豆粉中提取植物精油，并研究了不同浓度植物精油对赤拟谷盗的趋避作用。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

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