用中温沥青研制电极浸渍沥青

以中温沥青为原料，选择价廉易得的有机溶剂，采用较简便的净化工艺，可制得符合炭素厂要求的电极浸渍沥青，为中间试验提供了相关的工艺参数。     

国内改质沥青的基本概况

本文叙述了国内改质沥青的基本情况。重点介绍了国内生产改质沥青的企业、制造方法、必须及其应用等。     

一种浸渍沥青的应用

通常石墨电极的浸渍是用中温煤沥青做浸渍剂 ,由于煤沥青中富含喹啉不溶物（ＱＩ） ,直接影响浸渍效果 ,并为下工序出现废品埋下隐患。因此必须脱除其ＱＩ杂质 ,以使煤沥青浸渍剂在浸渍过程中能顺利地通过气孔浸润到石墨电极的内部去 ,达到最佳浸渍效果。本文主要讨论山东济宁煤化公司生产的首批浸渍剂与山东生建八三厂合作进行工业性浸渍试验的情况。１试验经分析成分后发现 ,喹啉不溶物（ＱＩ）的差异较大 ,中温煤沥青ＱＩ含量在７ %～１０ %范围内 ,浸渍剂中ＱＩ含量在０．６７ %～１．２６ %范围内。浸渍剂的质量指标如表１所示。先将浸…     

煤焦油沥青制取球状沥青的研究

球状沥青是用煤焦油沥青经特殊的成型工艺而制成的一种沥青产品。已广泛应用于高炉出铁沟的浇注料中,市场需求和出口前景均很好,为此,我们利用本厂的沥青资源,研制成了     

氧化沥青的活化研究

本文主要研究了ＫＯＨ活化剂对氧化沥青的活化行为：同时制得了高比表面积（ＳＢＥＦ：～３６００ｍ~２／ｇ）的新型活性炭材料，并详细考察了原料氧化预处理及活化工艺条件对其比表面积及吸附性能的影响。     

煤沥青粘度测定方法的探讨

1前言现阶段，用于测定试样粘度的方法较多，如用思氏粘度计测定液体试样粘度，但此方法仅能测定低温度下液体试样的粘度值；而用于测定高软化点沥青的方法还不多。虽然有些单位能测定此项目，一般采用日产全自动、高精度的YZ—丙—207—2型粘度计测定煤沥青粘度，但此仪器价格     

乳化沥青生产过程计算机控制系统

本文介绍了采用ＳＴＤＶ４０系统的工业控制计算机构成的乳化沥青的油水比控制系统及各种参数的数据采集，显示，打印等硬件设计和软件设计。     

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。     

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     

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.     

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.     

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.     

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).     

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。     

Thermodynamics of high-temperature aluminum,zirconium, and yttrium hydroxide and oxyhydroxide vapor species

Thermodynamic parameters are reported for gaseous hydroxides and oxyhydroxides of Al, Zr, and Y. The structures and vibrational frequencies are calculated using density functional theory with the B3LYP functional. This yields entropies at 298.15 K and heat capacities. The enthalpies are calculated from appropriate reactions and the CCSD(T) (Coupled Cluster, Singles, Doubles, and perturbative Triples) approach. The hydroxide groups are treated as hindered rotors for all species. The results are compared to the limited experimental and theoretical calculations for these species. Finally, the data are put into a database for a free-energy minimizer and the vapor pressures for each species are compared.     

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.     

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