隔膜法

U.S. Witton valve The main products are: electric valve, pneumatic valve, high temperature and pressure valve, ball valve, gate valve, butterfly valve, globe valve, check valve, control valve, solenoid valve, safety valve, needle valves, steam traps, plug valves, diaphragm valve, duckbill valve, discharge valve, exhaust valve, breathing valves, filters, flame arrester, the throttle valve, angle seat valve, balance valve, discharge valve, sludge valve, isolating valve, valve, pipe clip valve, plunger valve, foot valve, depending on the lens, flange, hydraulic control valves, and other products.

美国威顿阀门主要产品有：电动阀门、气动阀门、高温高压阀门、球阀、闸阀、蝶阀、截止阀、止回阀、调节阀、电磁阀、安全阀、针型阀、疏水阀、旋塞阀、隔膜阀、鸭嘴阀、放料阀、排气阀、呼吸阀、过滤器、阻火器、节流阀、角座阀、平衡阀、排污阀、排泥阀、切断阀、减压阀、管夹阀、柱塞阀、底阀、视镜、法兰、水力控制阀等系列产品。

U.S. Will Valve The main products are: electric valve, pneumatic valve, high temperature and pressure valve, ball valve, gate valve, butterfly valve, globe valve, check valve, control valve, solenoid valve, safety valve, needle valves, steam traps, plug valves, diaphragm valve, duckbill valve, discharge valve, exhaust valve, breathing valves, filters, flame arrester, the throttle valve, angle seat valve, balance valve, discharge valve, sludge valve, isolating valve, valve, pipe clip valve, plunger valve, foot valve, depending on the lens, flange, hydraulic control valves and other products.

美国威尔阀门主要产品有：电动阀门、气动阀门、高温高压阀门、球阀、闸阀、蝶阀、截止阀、止回阀、调节阀、电磁阀、安全阀、针型阀、疏水阀、旋塞阀、隔膜阀、鸭嘴阀、放料阀、排气阀、呼吸阀、过滤器、阻火器、节流阀、角座阀、平衡阀、排污阀、排泥阀、切断阀、减压阀、管夹阀、柱塞阀、底阀、视镜、法兰、水力控制阀等系列产品。

Then the relations of structures and properties of microporous membranes used in lithium-ion batteries were discussed.

介绍了锂离子电池隔膜用微孔膜的制备原理与结构，重点叙述了熔融拉伸法和热致相分离法制备微孔膜的基本原理和膜结构影响因素，并在此基础上讨论了锂离子电池隔膜用微孔膜结构与性能之间的关系。

This company produces the manometry instrumentation fittings mainly for: a variety of joints manometer components; a variety of stainless steel diaphragm flange; various thermometer overall jacket; a variety of health-based physical access divide; a variety of over-voltage protection, and damper , needle valve, one valve, two valves, three valves, five valves, pressure switches, etc. all fittings Valves; a variety of pressure gauges associated radiator fittings and other precision instrumentation.

本公司生产的测压仪表配件主要为：各种压力表的接头部件；各种不锈钢隔膜法兰；各种温度计整体护套；各种卫生型隔膜接体；各种过压保护器、阻尼器、针阀、一阀、二阀、三阀、五阀、压力开关等阀类的所有配件；各种与压力表配套的散热器等精密仪器仪表配件。

This company produces the manometry instrumentation fittings mainly for: a variety of joints manometer components; a variety of stainless steel diaphragm flange; various thermometer overall jacket; a variety of health-based physical access divide; a variety of over-voltage protection, and damper , needle valve, one valve, two valves, three valves, five valves, pressure switches, etc.

本公司生产的测压仪表配件主要为：各种压力表的接头部件；各种不锈钢隔膜法兰；各种温度计整体护套；各种卫生型隔膜接体；各种过压保护器、阻尼器、针阀、一阀、二阀、三阀、五阀、压力开关等阀类的所有配件；各种与压力表配套的散热器等精密仪器仪表配件。。。

Meanwhile, this paper right diaphragm electrolysis salt water production process and the reaction device illustrated.

同时本文也对隔膜法电解食盐水的生产流程以及反应的装置进行了说明。

Long-necked valve cover design mainly the design of the neck length L, L refers to the stuffing to the bottom of the sealing seat surface distance (Figure 1), which, and the material thermal conductivity, thermal conductivity and surface area factor, cooling 隔膜阀 area, and other factors, more complicated calculation, generally obtained from the experiment.

长颈阀盖的设计主要是颈部长度L的设计，L指的是填料函底部到上密封座上表面的距离（如图1），它和材料的导热系数、导热面积及平衡阀表面散热系数、散热面积等因素有关，计算比较繁琐，一般由实验法求得。

It is considered that the four-evaporator three-effect process is the most practical for the evaporation of diaphragm caustic soda.

对三效顺流、四体三效及三效四体3种生产质量分数42%等高浓度烧碱的蒸发工艺的优劣性进行了对比分析，认为四体三效工艺在隔膜法烧碱蒸发中具有较强的实用性。

Keywords diaphragm membrane caustic soda;brine rectifying;plant membrane

隔膜法烧碱；盐水精制；种植膜

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。