流态混合法制造洗涤剂

现在发展了一种连续制造合成洗涤剂（或以肥皂为基础的清净剂）的新方法，是由安海德罗公司提出的。安海德罗流态混合装置效率高而且需要能量少。基本过程的流程图见下图。图中①为进料斗，②为预先混合器，③为输送系统，④为贮料仓，⑤为带式输送器，⑥为流态混合床，⑦⑧为风机，⑨为旋风分离器，⑩为导管，⑾为加香系统，⑿为液体贮罐，⒀为计量泵，⒁为喷咀，⒂为压缩机，⒃为仪表盘⒄为吸风系     

知识窗

硫化氢 硫化氢（Hydrogen sulfide）为无色气体，具有臭蛋气味。分子式为H2S，分子量为34．08，相对密度为1．19，熔点为-82．9℃，沸点为-61．8℃，易溶于水，易溶于醇类，石油溶剂和原油中。可燃上限为45．5％，下限为4．3％，燃点为292℃，燃烧时可产生蓝色火焰。     

一种增强摩阻复合材料及其制造方法

一种增强摩阻复合材料，其组分按质量比分别为：丁腈橡胶改性酚醛（XF）为29％～31％，碳纤维7％～10％。Twaron浆粕为3％，三氧化二铝为5％～15％，二氧化硅为15％，铬铁矿为0％～5％，BaSO4为6％～20％，海泡石为5％～20％，石墨为0％～2％，PES为9％～5％，MoS2，铜粉为3％，     

电解法制备高纯异辛酸亚锡的研究

金属锡为阳极，阴极为钛网，电解温度为７０℃，槽电压为６．５Ｖ，电解９０ｍｉｎ，电流效率为６９．１％，与异辛酸的转化率为９８．６％，异辛酸亚锡产率为９５．２％，耗电量为１．２０ｋ·ｈ／ｋｇ。     

用SiCl4或SnCl4偶联聚丁二烯

以丁二烯为单体，环己烷为溶剂，正丁基锂为引发剂，ＳｉＣｌ４或ＳｎＣｌ为偶联剂，当偶联反应温度为５０℃，反应时间为３０ｍｉｎ时，可制备星形聚丁二烯。     

企业发展必须知荣辱 树新风

“以热爱祖国为荣、以危害祖国为耻，以服务人民为荣、以背离人民为耻，以崇尚科学为荣、以愚昧无知为耻，以辛勤劳动为荣、以好逸恶劳为耻，以团结互助为荣、以损人利己为耻，以诚实守信为荣、以见利忘义为耻，以遵纪守法为荣、以违法乱纪为耻，以艰苦奋斗为荣、以骄奢淫逸为耻”。     

车用粘合剂和密封胶需求趋增

据分析，随着我国汽车工业发展速度的加快，车用胶粘剂和密封胶的市场需求日益加大。 据统计，目前我国汽车工业用粘合剂和密封胶的年消耗量已近３万吨，并且将逐年增多。预计今年我国汽车工业对各种类型的粘合剂和密封胶的总需求量将达到６．３７万吨。其中，聚氯乙烯塑溶胶为１．９８万吨，隔热底涂胶为１．４４万吨，氯丁胶为１．２４万吨，丁基胶为２０３０吨，丁苯胶为１４００吨，丁腈胶为１０７０吨，聚硫胶为７３０吨，聚氨酯胶为６２０吨，环氧胶为８４０吨，丙烯酸酯胶为３１５吨。 预计２０１０年，我国汽车工业对各种类型的粘合…     

氰菌胺的高效液相色谱法测定

叙述了采用反相高效液相色谱法，以甲醇为溶剂，甲醇 水(65 35)为流动相，ODS为填料和紫外检测器分离测定氰菌胺。结果表明，其标准偏差为0．0012，变异系数为0．12％，回收率为99．85％，线性相关系数为0．9998。     

高含量2，4’-二羟基二苯砜的合成

以邻二氯苯为溶剂，苯酚、硫酸为原料，通过添加催化剂亚磷酸合成2，4＇-二羟基二苯砜（2，4＇-BPS），确定了较好工艺条件：n苯酯：n100%硫酸=2．2：1，亚磷酸16g，回流时间8．0h，2，4＇-BPS含量为47．42％，粗收率为70．0％，产品为白色的结晶。同时还研究了以较便宜二氯甲苯为溶剂合成2，4＇-BPS的工艺条件：n苯酚：n100％硫酸=2．2：1，不加催化剂，反应时间5．0h，二氯甲苯200g，2，4＇-BPS含量为42．21％，粗收率为91．7％，产品为浅粉色结晶。     

反相高效液相色谱法测定快杀稗

选用反相高效液相色谱法，在Ｃ１８反相柱上，以甲醇／ｐＨ３．０水为流动相，以邻苯二甲酸二乙酯为内标物，对快杀稗进行定量分析，９次测定结果，其平均值为８８．７４％，相对偏差为０．３７％，变异系数为０．６３％，平均回收率为９９．１％－１０１．９％，线性相关系数为０．９９９９７。     

球形氧化铝粉体制备的研究进展

球形氧化铝粉体是氧化铝产品中不可缺少的一部分,因其特殊的物理化学性质而备受关注。与不规则氧化铝粉体相比,球形氧化铝粉体的形貌和尺寸能极大地提高其产品的使用性能。目前,已有大量文献探讨了制备球形氧化铝粉体的方法,但缺少文献系统性地比较不同含铝原料适用的制备方法和优缺点。本文从不同的含铝原料出发,对已有文献进行总结分析,发现不同的含铝原料决定了不同的制备方法,从而决定了工业化的难易程度,其中无规则氧化铝是球形氧化铝粉体工业化并实现量产的最佳原料。     

残矿中低含量铁的测定

研究的是矿粉中低含量铁的测定方法和相关的测定装置。主要介绍两种矿粉中铁含量测定的方法。一是通过利用涡流检测技术,测定矿粉中的含铁量;二是通过化学分析的方法,测定矿粉中的含铁量。     

片状镍粉的表面改性试验研究

金属粉体材料对促进有色行业和精细化工行业技术升级,推动优化产业结构具有重要意义。片状镍粉是一种明亮,有光泽的颗粒产品,是适用于高性能涂料以及粉末涂料的理想装饰颜料。片状镍粉的表面改性是应用前的重要环节。本论文重点介绍了几种常见表面改性剂以及几种复合改性剂对片状镍粉的表面性能的影响,分析总结出几种适合于对片状镍粉表面改性效果比较好的表面改性剂和改性方法。     

民族药鸭嘴花药用部分挥发油的GC-MS分析

采用水蒸气蒸馏法提取制备鸭嘴花中挥发油,并通过GC-MS和检索所用质谱库(NIST08.L,Wiley 275.L)检索研究其化学成分组成,用面积归一化法确定各成分的相对质量分数。从鸭嘴花药用部分挥发油中分离出202个色谱峰,鉴定了其中的51个化合物,占挥发油总质量的47.86%。结果表明,鸭嘴花药用部分挥发油中化合物种类丰富。对鸭嘴花挥发油化学成分的研究为该民族药药理活性研究提供了物质基础。     

Development of Insolubility in Dehydration of Dairy Milk Powders

The insolubility of milk powder is affected by the degree of heating in the drying process. This phenomenon was studied with milk products of different moisture content that were subjected to treatments of defined temperature (5−55°C) and time. Skim milk powder (SMP, protein content 36%) was most sensitive over a range of moistures from 15% to 40%. Milk protein concentrate (MPC) powder (73% protein) was most sensitive at higher moisture contents than SMP. At the fastest reaction rates, and for both SMP and MPC, the ratio of moisture to protein (calculated on a dry basis) was approximately one part moisture to one part protein. The rates of development of insolubility in the moist products were fitted to the Arrhenius relationship; this allows extrapolation of the rate of reaction to conditions in a spray dryer. The factors that affect the insolubility reaction are discussed, in particular the effects of the concentrations of lactose and minerals. The results explain certain features of the current design of milk powder driers and will facilitate overcoming problems with the insolubility in high protein powders.     

Assessment of the mixing efficiency of solid mixtures by means of image analysis

When assessing a mixing process, mixing quality is a characteristic parameter. To determine the optimum mixing time, it is necessary to measure the mixing efficiency as a function of mixing time. Mixing efficiency is determined by a sufficient number of sample analyses after certain mixing times. The novel method of image analysis allows to rapidly determine the optimum mixing time without sampling and complex sample analysis being required. In this study the model products have different particle sizes and colors to see a difference between them in the image analysis program. Analyzing a real mixture to find chemical substitutes for all particle components is impossible. The study can help the plant engineer to mark a component of interest for finding the optimum point of stationary equilibrium. In this paper the theory for sampling and comparing multi-component mixtures by image analysis to determine the mixing efficiency will be also described and discussed.     

Phase constitution of the combustion products of thermite mixtures modified by titanium oxide

The products of frontal combustion of Fe₂O₃/TiO₂/Al thermite composite powder mixtures with various component ratios are studied. Differences in the composition of the combustion products are discussed. A probable mechanism of their formation is proposed. Practical uses of the results are considered. __________ Translated from Fizika Goreniya i Vzryva, Vol. 43, No. 6, pp. 61–68, November–December, 2007.     

Chemical Analysis of Aluminum as a Propellant Ingredient and Determination of Aluminum and Aluminum Nitride in Condensed Combustion Products

A brief survey of typical problems in the analysis of aluminum powder in aluminized solid propellants and in analysis of condensed combustion products of these propellants was carried out. Recommendations for applying the versions developed by the authors of the known methods are given. The permanganatometric variant of the titrimetric method was found suitable for most tasks concerning the measuring of the metallic/unburned aluminum. The determination of aluminum nitride in combustion products using the combination of chemical and X‐ray diffraction methods was described and illustrated by results obtained from condensed combustion products of propellant formulations containing highly active ultrafine aluminum powder. Even for this formulation the content of aluminum nitride in the final condensed combustion products was found to be negligibly small independently of the nature of the gas (argon or nitrogen) used for bomb pressurization.     

废弃SCR脱硝催化剂资源化制备再生钛钨粉的研究

以蜂窝式废弃SCR脱硝催化剂为原料,采用常温湿法浸出工艺,在不同的反应条件下制备了一系列再生钛钨粉产品,根据其中杂质硅、铝、砷、钠、钾和钙等元素的含量和比表面积筛选出最适宜的浸出工艺条件[w（氢氟酸）为2%,浸出时间为3 h]。以最适宜条件下制备的再生钛钨粉为原料制备了新的脱硝催化剂,与工业钛钨粉制备的催化剂相比具有较高的脱硝率。采用X射线荧光光谱（XRF）、氮吸附BET（N₂-BET）、X射线衍射（XRD）及透射电镜（TEM）手段表征了其元素含量、表面性质、晶型结构和微观形貌,并与工业钛钨粉制备的催化剂表征结果对比后发现,再生钛钨粉为原料制备的新的脱硝催化剂之所以具有较高的脱硝率,是因为废脱硝催化剂经过氢氟酸浸出反应后制备的再生钛钨粉所制备的催化剂不仅具有与工业钛钨粉所制备催化剂相似的化学成分、比表面积、晶型结构和微观形貌,而且经过浸出反应制备的再生钛钨粉还保留了一部分活性V₂O₅。此外,再生钛钨粉具有较好的催化稳定性,拥有良好的工业化前景。