微机监控系统在抱子石电厂的应用

本文介绍H9000计算机监控系统及其在抱予石水电厂中的应用。该系统是按“无人值班”（少人值守）的原则设计，才用可编程逻辑控制器（PLC）直接接入以太网的方式来实现，系统已于2004年7月全部投运。     

新建电厂管理信息系统的规划与建设

电厂管理信息系统(MIS)的基本功能是在计算机网络和数据库的支持下完成对生产经营活动的管理.MIS应具备设备管理、燃料管理、生产技术管理、财务管理、商业经营管理、人力资源管理、办公自动化、Intranet网络服务等多方面功能,其目的是实现生产、经营,人财、物流等计算机网络化管理,全面提高电厂生产管理水平和工作效率,最大限度地开发电厂的生产力资源、信息资源,以获取最佳的经济和社会效益.     

在山西兴建燃气-蒸汽联合循环电厂的必要性和可行性探讨

分析了山西电力的现状以及国内外使用燃气—蒸汽联合循环的情况,指出在山西有必要且有可能建立燃气—蒸汽联合循环电厂,以提高山西能源利用率,减少山西的环境污染。     

Vapour Recoil Effect on a Vapour Liquid System with a Deformable Interface

A new two-sided model of vapour-liquid layer system with a deformable interface is proposed. In this model, the vapour recoil effect on the Marangoni-Bénard instability of a thin evaporating liquid layer can be examined only when the interface deflexion is considered. The instability of a liquid layer undergoing steady evaporation induced by the coupling of vapour recoil effect and the Marangoni effect is analysed using a linear stability theory. We modify and develop the Chebyshev-Tau method to solve the instability problem of a deformable interface system by introducing a new equation at interface boundary. New instability behaviour of the system has been found and the self-amplification mechanism between the evaporation flux and the interface deflexion is discussed.     

硅氧化合物化学蒸气沉积法精细调变沸石分子筛

本文报告了用化学蒸气沉积法精细调变沸石孔径的结果，着重考察了正硅酸乙酯和六甲基硅醚沉积条件的关系。间二甲苯和均三甲苯的吸附动力学实验表明，用Ｓｉ－（ＯＥｔ）４制得的ＳｉＨβ和ＳｉＨＺＳＭ－５上的吸附速率及吸附量明显下降，证实沸石的孔口得到了调变。正己烷的吸附等温线和异丙醇探针反应，沸石孔容和孔道内酸性未受孔口调变的影响。结果还表明Ｓｉ（ＯＥｔ）４未进入沸石孔道，而六甲基硅醚分子则进入Ｈβ沸石孔道，     

溶剂蒸气对聚对苯二甲酸乙二酯作用的差示扫描量热研究

用差示扫描量热(DSC)研究了几种有机溶剂蒸气对聚对苯二甲酸乙二酯(PET)的作用,表明可分为反应性的和非反应性的两种。同时,对于非反应性的作用,依冷结晶峰面积的变化,又可分为三种类型:冷结晶峰面积不变,经诱导期后下降,无诱导期而迅速下降。双冷结晶峰现象在一些非反应性溶剂处理过的PET试样的DSC曲线也观察到。     

Studies of the Methane Steam Reforming Reaction at High Pressure in a Ceramic Membrane Reactor

The effects of temperature and pressure on the steam reforming of methane 3H2+CO) were investigated in a membrane reactor (MR) with a hydrogen permeable membrane. The studies used a novel silica-based membrane prepared by using the chemical vapor deposition (CVD) technique with a permeance for H2 of 6.0×l0-8 mol·m-2·s-1·Pa-1 at 923 K. The results in a packed-bed reactor (PBR) were compared to those of the membrane reactor at various temperatures (773-923 K) and pressures (1-20 atm, 101.3-2026.5 kPa) using a commercial Ni/MgAl2O4 catalyst. The conversion of methane was improved significantly in the MR by the countercurrent removal of hydrogen at all temperatures and allowed product yields higher than the equilibrium to be obtained. Pressure had a positive effect on the hydrogen yield because of the increase in driving force for the permeance of hydrogen. The yield of hydrogen increased with pressure and reached a value of 73×10-6 mol·g-1·s-1 at 2026.5 kPa and 923 K which was higher by 108% than the value of 35×10-6 mol·g-1·s-1 obtained for the equilibrium yield. The results obtained with the silica-based membrane were similar to those obtained with various other membranes as reported in the literature.     

波形板汽水分离器汽水两相分离机理研究

采用分离流动模型模拟了波形板汽车分离器内的汽水两相流动,对波形板内液滴的运动轨迹和分离效率进行了数值计算,讨论了波形汽水分离器内流动的压力损失随通道结构参数和流动参数的变化 情况。     

比例-双信号动态矩阵控制

将动态矩阵控制与双信号对象相结合,可以得到双信号动态矩阵控制。双信号动态矩阵控制包括四个环节：预测模型,滚动优化,反馈校正和导前信号校正。但由于采样周期与导前区不匹配,当发生导前区扰动时过渡过程仍不理想。进一步在双信号动态矩阵控制的基础上引入比例调节器,形成比例—双信号动态矩阵控制。仿真结果表明,用该方法设计的蒸汽温度控制系统在跟踪设定值和克服扰动等方面都具有良好的控制品质。     

用选择离子流动管质谱测定汽油和柴油蒸汽成分

采用选择离子流动管质谱(SIFT／MS)装置，以H30^ 、N0^ 为初始离子对汽油和柴油蒸汽进行了研究，质谱分析表明，汽油和柴油主要由C—H化合物组成，包括烷烃、环烷烃、烯烃、炔烃、二烯烃以及芳香烃。在这几种成分中，烷烃都占有最大的比例；汽油蒸汽和柴油蒸汽最大的区别是柴油蒸汽中长链大分子的挥发性C—H化合物所占的比例远远高于汽油蒸汽。文中还给出了以H30^ 、N0^ 为初始离子所得到的汽油蒸汽的质谱图，以及汽油、柴油蒸汽中各种成分的定量分析结果。