查询词典 sulphuric acid

The results showed that nNH3/nSO3 had a significant effect on the concentration of sulphuric acid mist and NH3 in the tail gas, and it determined the composition of the ammonium salt.

结果表明，nNH3/nSO3对尾气中硫酸雾及NH3浓度有较大影响，而且基本决定了反应成盐的成分及含量。

Generally, the WSA plant will be brought into play in both sulphuric acid process and environment protection.

使WSA 湿法制硫酸工艺在硫酸工业技术发展和环境保护方面发挥作用。

We shall look at two compounds, salt and sulphuric acid, work horses of the chemical industry.

我们将讨论盐和硫酸这两种化合物——化工中的两大"支柱"。

Corn starch ; concentrated sulphuric acid ; acidify ; grape sugar

玉米淀粉；浓硫酸；酸化；葡萄糖

In the first step KHSO4 is formed from KCl by acidulation using sulphuric acid.

从氯化钾中获取硫酸钾的第一步是通过使用硫酸进行酸化处理。

An investigation is made of the dissolution process of Co, Cu and Fe containing nickel ahoy scraps in sulphuric acid solution by using electrochemical dissolution method.

采用电化学溶解法对含Co、Cu、Fe等杂质的废镍合金在硫酸中的溶解过程进行了研究。

Indirect electrochemical oxidation of anethole to anisaldehyde was investigated in non-membrane electrolytic cell using Mn/Mn as redox mediator, and pure lead as cathode and anode in sulphuric acid solution. The effects of electrolysis conditions on the yield of Mn was particularly discussed.

研究了在硫酸溶液中以Mn/Mn作为媒质，铅为阴极和阳极，在无隔膜电解槽中间接电化学氧化茴香脑合成茴香醛，讨论了电解反应条件对电解产率的影响。

The mixture of amino acid was obtained by hydrolyzing tussah silk with sulphuric acid.

用硫酸水解柞蚕丝制取混合氨基酸，采用二次回归正交旋转组合试验，考察硫酸浓度、水解温度和水解时间对氨基酸回收率的影响。

In the process of ion exchange membrane electrodialysis with three compartments, sodium lactate was converted into lactic acid and sodium sulphate was obtained by adding sulphuric acid.

在离子交换膜电渗析从乳酸钠制备乳酸中，利用三室的电渗析器在外加硫酸的条件下将乳酸钠转化为乳酸，同时得到硫酸钠。

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。

He is the most remarkable man that I have ever known.

他是我知道的人中最值得注意的人。

Increased appearance of lymphocele was noticed in patients with diabetic nephropathy, congenital malformations of the urinary tract, and inflammatory diseases, including glomerulopathy and extraglomerular ones, after high-voltage radiotherapy and after removal of the renal graft.

经过高压放射疗法和切除移植肾后，在糖尿病肾病患者、泌尿系统先天性畸形患者和炎症患者身上发现淋巴囊肿有所增加，包括肾小球病和球外疾病等。