均温型(JW)低压甲醇合成塔内件设计及使用

阐述了低压均温甲醇合成塔内件开发设计的基本情况，利用计算机模拟软件程序进行计算，并对合成塔性能，生产指标和经济效益进行比较。     

厂址选择中的物流分析

结合化工矿山特点,进行系统物流分析,为规划设计方案比较提供依据。同时结合多方面因素,进行技术经济比较,最后确定厂址。     

工程设计中要重视系统分析

工程设计的主要建设方案的确定，都要经过技术经济评价，方案比较，选择方案时应该采用系统的观点，抓住关键部位，并应设法运用系统物流分析，必要时还可以引入可靠性分析 方法，举了几个实例，说明采用可靠性分析的做法。     

综采大断面切眼一次成巷技术研究

为了解决潘三矿1642（1）大断面切眼的支护及施工技术难题,实现工作面的快速接替,分析了大断面切眼的支护原理,提出了锚网索、T3钢带和单体液压支柱配合工字钢挑梁的联合支护方式。同时根据一次成巷与二次成巷的优缺点对比,最终确定采用分次交替掘进、一次成巷的施工方案并取得了良好的社会经济效益,为类似条件下大断面切眼巷道的施工提供了很好的借鉴和参考。     

热油管道结蜡厚度与经济清管周期计算

对热油管道来说,结蜡到一定厚度时,易造成清管过程中蜡堵事故的发生。另外,结蜡还对热油管道的经济运行存在两方面的影响,即增加动力费用和降低热力费用。因此合理预测热油管道的结蜡厚度和经济清管周期尤为重要。介绍了一种普适性结蜡模型和经济清管周期计算模型,在此基础上以日均运行费用最低为目标,开发了热油管道结蜡厚度与经济清管周期预测程序,并以铁岭—新民段管线为例计算说明。指出了该程序的不足和今后研究方向。     

师范院校工科专业课程设置与教学模式探讨

师范院校开办工科专业,增加了师范院校的办学活力,使师范院校为地方经济建设服务的能力增强,但也存在一些问题,必须妥善解决。应该不断修订与改革其人才培养方案,以适应社会经济在快速发展进步中对人才的需求。对师范院校工科专业人才培养方案的改革与修订进行了有益的探索,对专业课程体系建设提出了框架性思路,并对教学模式进行了探讨。     

集成技术在天津100万t/a乙烯汽油分馏塔中的应用

介绍了天津100万t/a乙烯装置塔径φ12600 mm汽油分馏塔用国产化方案取代工艺包方案的原因,优化设计中采用的集成创新技术,对生产技术指标、经济效益、社会效益、技术水平及塔系优化进行了展望,显示了我国在高难度超大型塔器的研发和工程设计方面的跨越式发展及国际竞争力。     

染料纳滤脱盐浓缩工艺与传统盐析压滤工艺的经济性比较

介绍了染料的纳滤脱盐和浓缩工艺 ,并与某些染料后处理中的盐析、压滤过程比较 ,进行了经济性的估算。用纳滤方法代替盐析和压滤工艺 ,对于 1 0 0 0t/a染料工厂 ,每年可节约 2 4 0万元 ,同时可提高染料的品质     

A Zone-type Model for a Building Fire and Its Sensitivity Analysis

Based on the CFAST model, this paper describes a two-layer zone model developed to predict the environment in a multi-compartment structure subjected to a fire. The predictive equations, fire sub-processes and algorithm are concisely described. In order to validate the model and program a series of experimental data obtained from Cooper's work at NIST were selected for comparison with numerical results, and the comparison is fundamentally favourable. This paper presents an example of this comparison, including the results simulated by the CFAST zone model (Version 1.6). It is shown from the comparison that this model predicts better results than that of the CFAST for these cases, and convection heat transfer may be underestimated in the two models. It is also shown that C.W. Gear's stiffly stable method is feasible in numerically integrating the governing equation set. Additionally, this model is applied to conduct a parameter sensitivity analysis for a two-room fire, and some informative results are given and discussed.     

用于复混肥料厂投资项目经济评价的Excel应用程序

在多年肥料建厂经验及经济评价的基础上,运用计算机编制了一套简便的用于复混肥料厂投资项目经济评价的Excel应用程序,为快速进行建设项目的经济评价打下了基础.     

约束阻尼处理梁的有限元解法

提出了一种整体划分单元的有限元法来建立两种约束阻尼梁的有限元模型，根据阻尼结构的变形能原理推导得出了其刚度阵和质量阵。通过一个算例证实了本法可提高运算速度和计算精度．     

含高氯根水的腐蚀控制

大宇空调(天津)有限公司冷却水是含氯离子高、腐蚀性强的水质,系统存在严重的腐蚀问题,一直没有很好解决,天津化工研究设计院通过一系列试验室研究,确定了适合该厂的水处理方案,并经现场应用证妥,主某五理技术方案经济可行。运行4年来,取得了良好的应用效果,获得了很好的经济效益和社会效益。     

A methodology for comparing water desalination to competitive fresh water transportation and treatment

The comparison between desalination and other water supply methods i usually based on a conventional economic evaluation which typically takes into account the direct capital and operating costs and utilizes techniques and criteria which differ from designer to designer. While this method is usually adequate when one of the alternative water supply methods is clearly superior, the comparison must be much more systematic and comprehensive where the alternatives are competitive. This paper presents a methodology for such a comprehensive evaluation, addressing the complete water supply-disposal chain and taking into consideration technical, environmental, economic, and political/legal aspects of the problem. Actual examples, mainly from the experience of the Southwest Florida Water Management District, are provided to illustrate the methodology. The economic analysis is based on a present-value life-cycle cost model which accounts for interest, tax, insurance and escalations in energy, labor and material costs.     

A hybrid CPU-Graphics Processing Unit (GPU) approach for computationally efficient simulation-optimization

Simulation-optimization (Sim-Opt) is a widely used optimization technique that enables the use of simulation model so as naturally describe system complexity and stochastics. A key barrier to its broader adoption is the high computational cost associated with simulation that often limits its practicability. In this paper, we propose the use of GPU parallel computing, to enhance the computational efficiency of Sim-Opt. The main objective of this work is to develop a systematic framework that can be used to construct an efficient hybrid CPU-GPU program. The optimization of a process monitoring model using a Genetic Algorithm is used as a case study to illustrate the proposed approach. Our results show an over 100× acceleration of computation time by the developed hybrid program in comparison to a traditional CPU-based approach.     

基于“卓越计划”的应用型人才培养模式改革——以化学工程与工艺专业为例

"卓越计划"是教育部贯彻教育规划纲要精神启动的一项重大改革计划,以培养创新能力强、适应经济社会发展需要的高质量各类型工程技术人才为目标。本文以教育部试点专业为基础,按照化工卓越工程师培养的目标要求,建立以培养学生工程实践能力为目标的培养方案,以工程教育理念为核心,课程优化整合、教学改革为重点,采取走出去、请进来等多种形式实施"卓越计划",取得了显著效果。     

Assessing the sustainability of non-renewable brackish groundwater in feeding an RO desalination plant in Bahrain

The Rus-Umm Er Radhuma aquifer in Bahrain is a non-renewable source of brackish water (8-15 g/L), which forms a lens underlain everywhere with brines of over 100 g/L. Aquifer utilization has started in 1984 to feed a reverse osmosis (RO) desalination plant, with an economic life of 25 years (2010). Future plant upgrade strategy is formulated around boosting the plant production, which will require increasing the we llfield abstraction, in addition to a possible future rehabilitation program to extend the plant life by another 15 years (2025). The limiting factor in expanding the RO plant and its rehabilitation is the future feed water salinity, which have to be assessed before any investments are made to expand the RO plant and commission additional abstraction wells and implement the rehabilitation program. The aquifer management is based on mining a one-time brackish water reserve stored in the aquifer, the main management objective is stated as to sustain the aquifer future availability in feeding the desalination plant with a specified salinity limit of 20 g/L over the economic life of the plant of 25 years (1985-2010), and also over the plant extension period by rehabilitation (2010-2025). The stochastic analysis methodology utilizing conditional simulation is applied to conduct a risk assessment of violating these two pre-specified sustainability constraints under the proposed abstraction increase; and provided a tool to aid the decision-making process in the development and management of the aquifer under large uncertainties. Simulation results indicated that the risk of having the salinity of the wellfi eld produced water to increase due to the proposed increase in the wellfield abstraction to reach 20 g/L over the economic life of the plant (2010) is very small and minimal. However, it is questionable that the feed water salinity will be maintained under the proposed rehabilitation program to extend the plant economic life by another 15 years (2011-2025). For this option, it is recommended that model post-auditing be performed, and new updated predictions should be made as more data of potentiometry. salinity. and hydraulic parameters become available.     

容器斜接管区应力状态的研究

以直径６００ｍｍ、具有两个斜接管的容器为模型，进行了内压作用下的应力测试，并用高精度壳单元的柱壳相贯程序进行了详细计算，得到了容器斜接管区的应力分布规律。同时，从实验数据和ＳＡＰ程序的计算对比中验证了柱壳相贯程序，可用于工程计算     

考虑土体固结的单桩-土-承台非线性共同作用程序实现

提出了基于有限层理论的考虑土体固结的单桩-土-承台非线性共同作用分析方法。在此基础上,介绍了相应的计算程序CPRI的实现过程,给出了主程序计算框图和桩土承台支撑体系计算子程序框图。通过程序PRI检验和算例分析,验证了程序的正确性。程序CPRI可以模拟不同时刻单桩-土-承台支撑体系的竖向位移、孔压、桩顶反力和土体反力变化的情况。     

Die Verfahrensentwicklung im Spannungsfeld zwischen sich rasch entwickelnden Rohstoff- und Produktpreisen

Process development in a atmosphere of rapidly changing prices of raw materials and products . A computer program that allows the analysis of the economic consequences of alternative routes in process development is presented. The program communicates via a user friendly menu system. Single process steps, stored in the data base, can be combined to give systems of almost any desired level of complexity. The advantages and the scope of the program are illustrated by means of two examples.