我国隔膜法烧碱的生产现状及发展趋势

介绍了国内隔膜法烧碱的生产现状，分析了国内隔膜法烧碱生产水平与国外先进水平之间的差距，并对隔膜法烧碱的发展趋势进行了预测：在未来5～10年内，隔膜法烧碱仍是我国氯碱行业生产烧碱的主要方法之一，隔膜法烧碱将与离子膜法烧碱长期共存。     

烧碱装置的技术改造

介绍了烧碱装置的扩能技改情况，指出通过工艺技术改造，不断提高烧碱生产工艺技术水平是改善操作环境，降低烧碱成本的重要途径。     

烧碱溶液中单组分盐溶解性能的研究

烧碱是一种重要的工业原料，利用天然碱资源苛化法制烧碱往往含有一些单组份的盐，影响烧碱的质量。Na2SO4，NaCI，Na2CO3在烧碱溶液中的溶解度的研究，对烧碱生产过程中溶液蒸发条件的控制，得到合格烧碱产品具有实际指导意义。     

超声波烧碱浓度计的研制

介绍一种通过烧碱浓度温度和声时三者之间的相互关系来进行在线检测的超声波浓烧碱浓度计，通过实验，作者精确地测定了不同浓度和温度的烧碱溶液中的超声波声时，给出个烧碱的声时浓度系数和声时温度系数。     

日本2004年上半年烧碱的生产销售及出口情况

根据日本碱工业协会的报道，2004年1～6月日本国内烧碱的需求量为186．3万吨，同比增加了2．1％，其内需已连续增长了2年。烧碱的出口量为32．2万吨，同比减少了8．0％，在烧碱出口量连续增长了3年以后，今年上半年出现了下降趋势。尽管烧碱的出口量下降，     

降低烧碱电耗的改进措施

对影响烧碱耗电的因素进行了分析，提供了改进措施，保证了烧碱耗交流电逐年下降。     

高浓度离子膜法烧碱的生产

高浓度离子膜法烧碱的生产日本旭硝子公司对高浓度离子膜法烧碱的生产曾作了探索和试验，在试验电槽中装入高浓度烧碱用膜，经２年运行证明，运行电流效率保持在９３～９４％，产品质量非常好。很明显，从电解槽直接生产出５０％的烧碱，与用蒸发浓缩法相比，可以节省浓缩...     

烧碱蒸发工艺真空系统的改进

分析了烧碱蒸发工艺真空系统真空度偏低的原因，结合烧碱蒸发系统现状，提出了改进措施，取得了预期效果。     

2005年日本国内烧碱的销售及出口情况

根据日本碱工业协会汇集整理的日本碱工业药品2005年烧碱供需状况的报道，2005年日本烧碱的总销售量为455．3万吨，同比增加了1．9％，已连续4年超过上一年的实绩，同时也超过了历史最高纪录的2000年（447．2万吨）。从日本2005年烧碱用途明细表中（见下表）可知，除了占日本国内烧碱需求6成以上的化学工业在2005年对烧碱的需求量减少了2．1％外，食品、水处理、废水处理、染色整理、化学纤维等行业对烧碱的需求量增加了0．8％，使2005年日本烧碱内需达到379．7万吨，已连续3年超过上一年度的实绩，仅次于历史上最高纪录的2000年（381．4万吨）。     

影响隔膜碱含盐高的主要原因

文中对柴仑巴烧碱蒸发装置生产５０％ＮａＯＨ碱液的流程作了介绍，较详细地分析了一效沸点升高，分盐设备工和状况等是影响隔膜烧碱质量的主要因素，并提出提高隔膜烧碱质量具体措施和看法。     

国内外染料工业发展新动向

本文阐述了国内外染料工业发展的新动向,指出了国外染料市场趋势和发展新特点:染料企业重组已趋平稳和进一步确立我国作为世界染料生产和供应中心的地位,在国际上设置"技术壁垒"和"贸易壁垒"的力度进一步加强,新染料的开发放到比较重要的地位,不断适应纺织工业新的着色要求;还指出了我国染料工业的发展新特点:市场活跃新品不断,出口增长,连创新高,新兴基地,发展壮大。注重染料质的提高,采用新技术和清洁工艺生产是我国染料工业发展的重中之重。有7篇参考文献。     

稠油石化污水有机污染物分布特征研究

采用Gc-MS分析方法,研究了稠油石化污水中有机物分布特征,分析结果表明,稠油石化污水中有机物以烷烃、酚类和有机酸为主并含有一定量的PAHs,污水中有机物分子量140以下的以酚类为主,分子量在140以上的有机物多为烷烃和PAHs,其中烷烃类主要为分子量在200～350的饱和烷烃为主,PAHs以含不同数量甲基取代基的萘为主.     

Beurteilung der Reinigbarkeit von Oberflächen bei partikulärer Kontamination

Hygienic impeccable surfaces are, e.g., in food technology and healthcare facilities conditionally essential. Does a presence of fine particular contamination occur, adhesion forces between particles and surfaces are relevant. In this paper the cleaning‐process of materials, which are often used in cleanrooms are focused. The surface properties, which influence the dislodgement of particles are observed. There are two groups of materials used for the experiments, which are commonly used in hygienic relevant places in healthcare facilities.     

Heating value of biomass and biomass pyrolysis products

Studies conducted on the heating value of various types of biomass components and their pyrolysis products such as char, liquids and gases are presented. Heating values of chars are comparable with those of lignite and coke; heating values of liquids are comparable with those of oxygenated fuels such as methanol and ethanol, which are much lower than those of petroleum fuels. Heating values of gases are comparable with those of producer gas or coal gas and are much lower than that of natural gas. It is also found that the heating values of products are functions of the initial composition of biomass; correlations are developed to express these. Also, correlations are developed which explain the influence of ash elements on heating values of the pyrolysis products and on percentage distribution of energy in the products.     

丁二烯萃取装置聚合物产生原因分析及对策

丁二烯抽提装置因其萃取溶剂二甲基甲酰胺及丁二烯本身的特性 ,在运行过程中易产生各类聚合物 ,堵塞设备、管线、阀门等 ,制约装置的运行负荷和周期。从理论上分析了装置中各类聚合物的特性及危害 ,总结聚合物产生的原因 ,结合生产实际 ,提出了相应的对策     

Dynamics of large-scale fluctuations in native proteins. Analysis based on harmonic inter-residue potentials and random external noise

The fluctuations of residues of proteins about their equilibrium configurations are analyzed by the Langevin equation. Residue pairs that are covalently bonded and those that are within a given cutoff distance of each other are assumed to be connected by linear springs. The actions of the solvent and intramolecular interactions on each residue are treated as random noise. The correlations of fluctuations resulting from the solution of the Langevin equation are observed to be identical to those obtained by the Gaussian Network Model based on equilibrium statistical mechanics. The time-delayed correlations of fluctuations, and the response of the protein to a given frequency and to a window of frequencies are determined. The fluctuations of the residues resulting from a given fixed externally applied frequency are evaluated for different modes of the system. Synchronous and asynchronous components of correlations for different modes are formulated. The findings of the present paper are applied to the 241 residue protein S. marcescens endonuclease (1QL0).     

杜邦工艺液相导生喷淋系统技改的探讨

在保证生产稳定的前提下 ,对主工艺液相导生喷淋系统进行改造 ,并逐步取消了液相导生喷淋 ,从而提高气相导生的效率 ,减轻热媒炉负荷 ,改善热媒使用状况 ,降低重油单耗     

Biosurfactants: Recent advances

Surfactants find applications in a wide variety of industrial processes. Biomolecules that are amphiphilic and partition preferentially at interfaces are classified as biosurfactants. In terms of surface activity, heat and pH stability, many biosurfactants are comparable to synthetic surfactants. Therefore, as the environmental compatibility is becoming an increasingly important factor in selecting industrial chemicals, the commercialization of biosurfactant is gaining much attention. In this paper, the general properties and functions of biosurfactants are introduced. Strategies for development of biosurfactant assay, enhanced biosurfactant production, large scale fermentation, and product recovery are discussed. Also discussed are recent advances in the genetic engineering of biosurfactant production. The potential applications of biosurfactants in industrial processes and bioremediation are presented. Finally, comments on the application of enzymes for the production of surfactants are also made.     

橡胶防护蜡生产现状和发展趋势

叙述了橡胶防护蜡的应用情况对目前橡胶防护蜡下游市场进行了分析,介绍了国内外橡胶防护蜡生产企业现状和产品标准的发展,对市场发展趋势进行研判并提出建议。     

偶氮类有机光导体的发展趋势

综述了偶氮类有机光导体的发展历程、结构及性能,讨论了其性能的主要因素,归纳了偶氮类有机光导材料的主要类型,举例说明了合成过程,对偶氮光导体的发展前景作出了展望。有37篇参考文献。