刮膜

Major research work and conclusions are summarized as follows:1 The development of molecular distillation are reviewed in respect of the principle, model research and application; The technical and structure parameters are analyzed with respect to the evaporation rate and separation factor.2 Based on analysis of heat transfer and mass transfer process in WFMD, the discretization forms of bow wave ordinary differential equations and film partial differential equations are obtained with Runge-Kutta method and finite difference method respectively.

主要工作与研究结果如下： 1 综述分子蒸馏技术的应用及其发展现状，从分子蒸馏技术的原理、模型研究及其应用的发展等进行了系统评述；并结合蒸发速率和分离效率这两个评价分子蒸馏效果的重要指标，对刮膜分子蒸馏器工艺参数与结构参数进行了分析与讨论。

Polyethersulfone with Cardo is a developed engineering thermoplastic and membrane material with high glass transition temperature. PES-C ultrafiltration membranes were prepared by phase inversion method using dimethylacetamide as solvent and PVPK3O as additive.

采用凝胶相转化法，以新型耐高温工程塑料－含酚酞侧基的聚芳醚砜为膜材料，N，N-二甲基乙酰胺为溶剂，通过改变铸膜液中添加剂聚乙烯吡咯烷酮(PVPK30)的含量，在平板刮膜机上制备了一系列超滤膜。

The optimum conditions of the process for obtaining high- purity and recovery citral were determined by analyzing the relative content of citral with gas chromatography- mass spectrometry system.

用GC-MS联用仪对分离物中柠檬醛相对百分含量进行分析，实验表明，获得高纯度、高收率的柠檬醛的分子蒸馏的适宜工艺条件为：在蒸馏压力0.15Pa、蒸馏温度45℃、物料流量1滴/s、刮膜蒸馏转速370￣390r/min、冷却水温度4￣5℃。

To the mass percent of pyruvic acid from 15 to 30, such conditions is optimal: 10Torr in pressure, 70℃ in temperature, the 120mL/h of flow rate, the 30% of rotate rate to rotor.

对质量分数为15%～30%的丙酮酸，在操作压力为10Torr时，蒸馏温度控制在70℃，原料的适宜进料流速为120mL/h，刮膜器转子转速为30%。

The effects of operation parameters on separation of fatty acid methyl ester from rapeseed oil deodorizer distillate by molecular distillation were investigated for further utilization of RODD. The results indicated that the recovery of FAME was 41 g/(100 mL) when pressure was 5.2 Pa, evaporating temperature was 120℃, feed temperature was 70℃, wiper rolling speed was 150 r/min, feed rate was 120 mL/h. The biodiesel was analyzed by GC-TOFMS.

为了实现脱臭馏出物的清洁加工，运用分子蒸馏技术分离菜籽油脱臭馏出物中合成的生物柴油，考察了分子蒸馏的操作参数对生物柴油回收率的影响，研究结果表明：当系统压力为5.3 Pa，蒸发面温度120℃，进料温度70℃，刮膜转速150 r/min，进料速率120 mL/h时，生物柴油回收率达到41 g/100 mL。

Preparation of poly(vinylidene fluoride-co-hexafluoro propylene)-based symmetric microporous membranes by a dry/wet phase inversion method ;2. PES-C ultrafiltration membranes were prepared by phase inversion method using dimethylacetamide as solvent and EE as additive.

通过改变铸膜液中添加剂乙醚的含量，采用相转化法在平板刮膜机上制备了一系列超滤膜，考察了添加剂乙醚含量对铸膜液黏度、凝胶速度、膜性能和结构的影响，研究了PES-C/DMAc体系中添加剂乙醚作用的规律。

The mechanism of molecular distillation was analyzed in this paper.Stationary,falling-film,the UIC and centrifugal molecular distillatory in common use,and also the application and the development tr...

本文分析了分子蒸馏技术的机理，介绍了目前常用的静止式、降膜式、刮膜式和离心式分子蒸馏器，以及分子蒸馏技术在化工、医药、轻工和食品行业的应用情况和发展趋势。

Stationary,falling-film,the UIC and centrifugal molecular distillatory in common use,and also the application and the development trend inchemical products,medicine,light industry and food industry of molecular distillation were introduced.

本文分析了分子蒸馏技术的机理，介绍了目前常用的静止式、降膜式、刮膜式和离心式分子蒸馏器，以及分子蒸馏技术在化工、医药、轻工和食品行业的应用情况和发展趋势。

Heating and evaporating are experimented in the innercondensing wiped thin film evaporator with feed of viscous glycerol.

本文以粘性流体甘油为物料，在内冷式刮膜薄膜蒸发器中进行加热蒸发实验，分析和探讨了内冷式刮膜薄膜蒸发的传热阻力和工艺条件如操作压力、刮板转速和进料流量等因素的影响。

Residence time detection is carried out for wiped film molecular distillation by the impulse response method.

文章采用脉冲示踪法测量了刮膜式分子蒸馏中物料的停留时间分布，研究了示踪剂浓度和电导率强度的关系及刮膜转速、进料速率和物料粘度对停留时间的影响，并与降膜式分子蒸馏停留时间作了比较。

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。