WD—205型爆口机传动系统与工作机构的研究

本文针对玻璃器皿口部积瘤这个行业难题，分析了积瘤产生的原因，提出了爆口新方法。文中论述了二十工位无积瘤玻璃器皿爆口机传动系统和工作机构的设计过程。     

WD—20T型爆口机配气和燃烧系统的研究

本文论述了体现新型爆口方法的ＷＤ－２０Ｔ型爆口机的配气和燃烧系统的研究过程。详细说明了运动循环图，配气装置的设计，以及玻璃杯口部火焰切割装置的设计，分析了火焰爆口的工作原理。     

玻璃器皿回转式爆口机总体方案设计

论述了半自动9工位回转式爆口机的总体方案设计,包括与国外同类设备的比较、总体结构的安排, 以及技术关键的确定.     

HR18回转式烘口机总体结构设计

介绍了H18玻璃器皿烘口机相对于传统烘口机的优点,对其总体结构设计及工作原理进行了论述,并对各关键部件的结构设计进行了详细介绍。     

制造玻璃器皿的H28机组

H28机组为玻璃器皿成型机械.介绍了H28吹-压成型机和爱尔特里烘爆口机的工艺过程、机械结构和过程控制,分析了机组传统的机械传动系统和新的分部同步传动系统以及颈环机构回转的伺服驱动技术.列举了H28机组的附属设备、模具及主要的设备和工艺参数.     

大空间内爆燃泄爆过程数值模拟研究

为研究建筑物等较大空间内气体爆燃泄爆过程,采用Fluent软件对9 m~2的方形空间内部泄爆过程进行数值模拟研究,分析了点火位置、泄爆压力对室内超压的影响。结果表明:泄爆压力对最大超压峰值影响较大;远离泄爆口点火时有最快的火焰传播速度和较大的超压,靠近泄爆口点火时火焰传播速度最慢,在靠近点火位置设置泄爆口能有效减小超压。     

连通容器内预混气体泄爆过程

对甲烷-空气预混气体在连通容器内的泄爆过程进行了实验研究,与密闭容器爆炸过程进行了比较,研究了连通容器泄爆过程中压力的变化规律,分析了气体浓度和泄爆方式对连通容器泄爆过程的影响。结果表明,连通容器泄爆过程中,压力最大值通常出现在管道末端,由于震荡在球形容器内产生真空压力;与略低于化学计量比浓度相比,甲烷体积浓度略高于化学计量比浓度时,连通容器内爆炸压力增加,这种情况与单个密闭容器气体爆炸相同;两个泄爆口泄爆能较好地降低连通容器内最高爆炸压力,而仅采用一个泄爆口泄爆并不能显著降低容器内的最大爆炸压力。研究结论为工程上连通容器的泄爆安全设计提供重要参考。     

爆珠破碎对不同圆周卷烟物理性能及主流烟气的影响

为了解爆珠破碎对主流烟气中焦油、烟碱、一氧化碳（CO）、水分,以及卷烟物理性能总量、圆周、吸阻、通风的影响,试验制备了3种不同圆周的爆珠卷烟（24.3、20.0、17.0 mm）。结果表明不同圆周卷烟在爆珠捏爆后,抽吸口数、烟支重量、圆周和通风率差别不大,主流烟气焦油、烟碱、CO略有增加,水分增加最为明显,开吸阻和闭吸阻的平均值降低,变异系数增加。爆珠破碎导致吸阻降低可能是烟气常规化学指标增加的原因。此外随着卷烟圆周的减小,爆珠破碎对卷烟物理指标和烟气常规化学指标的影响逐渐降低。该研究为爆珠卷烟产品的设计分析提供参考。     

泄爆条件对预混H2/空气燃爆特性影响的数值模拟

为研究泄爆口处破膜压力对管道内可燃气体燃爆特性的影响,基于大涡模拟（LES）和Zimont燃烧模型,在泄爆口不同破膜压力条件下（0.1MPa、0.3MPa、0.5MPa、0.7MPa）,对预混H₂/空气燃爆过程开展三维数值模拟。结果表明：在大长径比管道内,由于管壁作用、声波震荡作用及火焰的不稳定性,各工况条件下火焰传播速度曲线存在3个波峰、2个波谷;除破膜压力为0.1MPa工况外,泄爆口开启产生减速效应,使各工况条件下的火焰传播速度相比于密闭管道均下降;各工况的管内压力在泄爆口开启后整体呈下降趋势,且泄爆口的破膜压力越小,管内压力峰值越小;对比密闭管道,各工况的压力上升速率均有不同程度的降低,爆炸强度减弱,破膜压力为0.3MPa时,压力上升速率的下降幅度最大,泄爆效果最好。     

油气爆炸抑制技术研究进展

分别从阻隔爆、抑爆和泄爆三个方面介绍了国内、外油气爆炸抑制技术的研究现状和研究成果,分析了油气爆炸抑制技术研究的发展趋势。     

修造船中防污涂料常见问题分析及解决方案

介绍了造船中与防污涂料涂装有关的工艺阶段中防污涂料面对的新问题、船厂使用的防污涂料及原理,对修造船中防污涂层缺陷、造船中长期的淡水舾装导致进坞后涂膜起泡、开裂、破损、脱落以及坞墩处船底防污涂料涂层破损问题进行了分析,并对解决方案进行了探讨。     

刮扳式捞渣机改造总结

阐述了刮板式捞渣机在Shell煤气化装置运行中存在的铸石衬板脱落,驱动链卡链、跳链、断链,2套圆环链因受力不均而出现刮板与壳体刮、卡、碰现象,箱体变形等问题,并对出现的问题进行详细分析探讨.提出了相应的整改措施,即改进衬板结构、改单侧驱动为双侧驱动、加固箱体等,提高了捞渣机运行稳定性,延长了运行周期.     

客车涂装用不饱和聚酯腻子的特性及缺陷分析

客车涂装过程中所采用的涂料和工艺与轿车和卡车涂装差不多,但由于客车本身受其车身外形尺寸大、产量低、生产中模具化差、钣金件的质量和装配性差等因素的影响,很多时候,必须刮涂不饱和聚酯腻子来弥补焊装和制作造成的车体缺陷。而不饱和聚酯腻子因受材料本身、涂装工艺、客车车身设计等诸多因素的影响,涂装及修补中有腻子涂层处极易造成涂层开裂、脱落等缺陷。分析了不饱和聚酯腻子的组成、特性、涂装工艺及操作步骤,以及腻子层开裂脱落的原因及其预防措施。     

溶胶-凝胶固相微萃取涂层的制备及特性

采用溶胶-凝胶法,将含高化学活性的四乙氧基硅烷（前驱体）与羟基硅油混和,以三氟乙酸为催化剂,经水解、缩合化学反应,形成溶胶体系,在石英纤维表面经陈化胶粒间聚合形成凝胶。将键合于石英表面上的凝胶作为固相微萃取涂层。采用FTIR红外光谱法表征了溶胶-凝胶的三维网络结构。应用溶胶-凝胶法制备的固相微萃取涂层热稳定性好,不易脱落。采用HS-SPME-GC技术萃取分析了水中的氯苯、苯、甲苯,以色谱峰高对浓度作外标曲线,在0.1~20 mg/L范围内,苯、甲苯、氯苯的线性相关系数分别为0.991 2、0.978 2、0.974 4,最低检测限分别为0.06、0.04、0.10 mg/L。实验结果表明自制的硅橡胶涂层对芳香化合物具有良好的吸附特性。     

广利油田储集层毛管压力特征

本论文运用毛管压力曲线的形态分析方法结合物性参数,对广利油田的储层进行了很好的评价,得出了大量的统计数据,广利油田存在三类储层,分析了各种储层的特征,对该地区的进一步勘探和油气田的开发提供了一定的依据,具有一定的参考价值。     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.     

A Review of Contemporary Views of Theories of Adhesion

The once distinct and independent theories of adhesion have been losing their isolation and converging. Ideas of the effects of surface roughness, once dismissed as irrelevant except in the case of textiles, have been revised; albeit on a smaller scale as details of surfaces have been revealed by sophisticated techniques. Electrostatic interactions across an interface have been more deeply explored and their significance recognised and expounded. Diffusion of groupings and chain segments within a polymer have been related to the possibilities of interaction with a variety of surfaces. Perhaps most important, theories of adsorption have been extended in depth. The precise nature of the molecular interactions have been recognised and quantified. In doing this the contribution of diffusion and elastoplastic phenomena have been integrated. These developments are collated and analysed to present the present understanding of the concepts.     

The Application of Biocatalysis in the Preparation and Resolution of Morita-Baylis-Hillman Adducts and Their Derivatives

The Morita-Baylis-Hillman (MBH) reaction affords highly functionalised allylic alcohols containing a new stereogenic centre. These MBH adducts are very versatile and have been transformed into a large range of products, some of which have medicinal potential. Several examples of asymmetric syntheses of MBH adducts have been reported, although a generally applicable method remains to be developed. Biocatalytic approaches for the synthesis and enzymatic kinetic resolution of MBH adducts have been reported, and are discussed in detail in this review. Enzymes able to catalyse the asymmetric MBH reaction have been identified, but selectivity and efficiency have generally been low. Lipases, esterases and nitrile-converting enzymes have all been successfully applied in the resolution of MBH adducts, with excellent selectivity being realised in most cases.     

The Catalytic Total Oxidation of Polycyclic Aromatic Hydrocarbons

Polycyclic Aromatic Hydrocarbons (PAHs) are a group of Volatile Organic Compounds (VOCs), which have serious health problems associated with their emission into the atmosphere. Catalytic oxidation is an effective abatement process to control PAH emissions, and the types of catalysts investigated have been reviewed. The majority of studies have used naphthalene as a model PAH, and in particular, catalysts containing palladium and platinum have demonstrated high activity for total oxidation. Catalysts based on the precious metals include those supported on high surface area supports, which have also been modified by adding further components, and metal exchanged zeolites. Metal oxide catalysts have also been employed and the most active for total oxidation are ceria-based. Studies of PAH total oxidation have largely been reported only in the last 10 years, and there still remains wide scope to develop improved catalysts and understand their catalytic mechanisms.