面向终端用户动态构造企业MIS

本文简要论述了企业管理对MIS的要求以及企业管理需求的特点，提出了面向终端用户动态构造企业MIS的方法——SY方法。以适应企业管理不断发展变化的需求，介绍了SY方法的主要目标、基本原则以及基于SY方法开发企业MIS的特点和过程等。     

基于SY方法的MIS开发与实现

该文简要介绍了ＳＹ方法的基本思想，包括基于ＳＹ方法的ＭＩＳ开发模式，ＭＩＳ体系结构以及集成开发环境等；分析了在用户需求基础上设计数据字典和功能说明的内容及积术块的设计原则和设计步骤；讨论了应用系统的定义，动态构造和实现过程以及系统维护和动态调整方法；特别强调了面向对象技术和软件重用性在ＳＹ方法中的作用。     

炭粒床高效工业除尘装置的设计与开发

The new dust removal technical route using the carbon-granular bed filter,packed of carbon particles with appropriate grade derive from an online-process vibration sieve,to replace the traditional baggy filter had been developed successfully for capturing the micro-carbon dusts produced from pulverization of petroleum coke,and the green close loop of carbon materials is thus completed in the combined pulverizing and classifying system and pulverized carbon dust removal process.The high dust removal efficiency greater than 99%,low outlet dust concentration less than 100 mg.m-3,low pressure drop through dust filtration chamber less than 980 Pa,simple and easy design,and flexible and stable operation were achieved also with the carbon-granular bed filter in both bench and industrial scale operations.     

A Sedimentation-Dispersion Model for both Non-attached and Attached Particles in Three-Phase Batchwise Fluidized Beds

The axial concentration distribution of both particles with better wetting (forming non-attached system) and poorer wetting (forming attached system) was investigated in a vertical gas-liquid-solid fluidized bed of 4.2 cm in diameter and 130 cm in height with the solids holdup less than 0.05. The one-dimensional sedimentation-dispersion model could be used satisfactorily to describe the axial distribution of solids holdup by modifying only a model parameter, i.e. by means of the terminal settling velocity minus a certain value, which is a function of gas velocity and considers the effect of an additional drag force resulted from attached rising bubbles. The axial profiles of solid concentration predicted are in good agreement with experimental results. This model also explains reasonably the different axial distributions of solid concentration, i.e. the solids holdup decreases as the axial height increases in non-attached system, but increases with the axial height in attached system at a given gas veloc     

基于部分微粒更新改进的具有非线性动态惯性因子的微粒群新算法

微粒群算法是基于群体智能的全局优化算法,在许多领域得到广泛的应用.该算法具有简单易于实现的优点,但是容易陷入局部极值尤其是采用动态惯性因子.采用动态惯性因子有利于提高微粒群算法的收敛速度,但降低了其全局搜索能力.针对具有惯性因子微粒群算法在进化过程中微粒群多样性减弱容易陷入局部最优值的问题,以非线性动态惯性因子的微粒群算法为基础,提出1种基于部分微粒更新的微粒群算法,以提高微粒群的多样性,进而提高了算法的全局搜索能力.新算法利用Sphere、Rastrigin、Rosenbrock、Schaffer、Freudenstein-Roth、Goldstern-Price 6个经典测试函数进行测试,并与基本微粒群算法和具有线性动态惯性因子微粒群算法比较.通过模拟优化比较,新算法寻优效率高、全局性能好、优化结果稳定,新算法能有效提高微粒群的多样性,具有较好的收敛性能和全局优化能力,尤其适合多峰函数的优化.     

浅议我国超细碳酸钙生产现状、问题及对策

阐述了我国超细碳酸钙生产现状和存在问题，提出了解决这些问题的对策措施。     

精煤降灰的节能效果

钢铁企业系统节能的重大战略措施是推行精料方针,炼铁行话曰:“七分精料,三分操作”,是很有道理的.炼铁高炉炉料中的杂质基本上都成为高温液态渣排出炉外,炉渣所带走的热约占高炉总热耗的16%左右,而高炉热量的绝大部分是源自焦炭,渣多必然多耗焦,渣多所夹带     

新余钢铁厂炼焦精煤合理灰份值的优选计算

炼焦精煤的灰份含量应该有一个合理的取值。从炼焦、炼铁的角度出发,灰份越低越好。从煤矿和洗煤厂的角度出发,过多地降低灰份又会使精煤回收率下降,洗精煤成本升高。这个矛盾应该在有利于整个国民经济的基础上加以统一,应该兼顾权衡两者的     

煤炭流化床燃烧与热天平燃烧动力学关系研究

通过对不同煤种在热天平中的单颗粒燃烧过程的分析发现:煤种、颗粒大小、氧气浓度对颗粒燃烧完全所需要的时间影响特别显著;而在一般流化床生产运行温度范围内,温度对颗粒燃烧完全所需要时间的影响有限;同一煤种不同颗粒煤焦孔隙率的影响很小.通过对单颗粒热天平燃烧实验,考查不同煤种及颗粒大小等各因素对颗粒燃烧过程的影响,可方便地指导流化床的设计以及生产运行过程中工艺的调整.