粉状活性焦在双层滤料颗粒床中的脱硫试验研究

在双层滤料颗粒床模型试验台上对粒径为300～400目的粉状活性焦进行了脱硫试验,研究了温度、O2和水蒸气体积分数、气体流速、再生次数对脱硫效果的影响.试验结果表明.温度为120℃、O2体积分数为8%、水蒸气体积分数为10%条件下,脱硫效果最好;粉状活性焦在双层滤料颗粒床中经过7次重复吸附.达到硫饱和吸附量为66.2 mg/g.粉状活性焦再生试验表明,随着再生次数的增加.粉状活性焦的脱硫性能呈下降趋势.     

KALMAN FILTER CALCULATION OF SAMPLING FREQUENCY WHEN DETERMINING ANNUAL MEAN SOLUTE CONCENTRATIONS

ABSTRACT: A linear filter (Kalman filter) technique was used with a Streamflow-concentration model the minimize surface water quality sampling frequencies when determining annual mean solute concentrations with a predetermined allowable error. The Kalman filter technique used the stream discharge interval as a replacement for the more commonly used time interval. Using filter computations, the measurement error variance was minimized within the sample size constraints. The Kalman filter application proposed here is applicable only under several conditions including: monitoring is solely to estimate annual mean concentration; discharge measurement errors are negligible; the Streamflow-concentration model is valid; and monthly samples reflect the total variance of the solute in question.     

降低布袋除尘器阻力与节能问题的探讨

根据多年来多事布袋除尘器的管理工作和现场调试经验，提出了除尘系统节能运行的思想和方法。并对布袋除尘系统的节能运行进行了认真的分析，特别是对降低除尘器阻力后如何进行节能调节问题进行了深入的探讨。     

USE OF X-RAY FLUORESCENCE TO DETERMINE TRACE METALS IN WATER RESOURCES1

ABSTRACT. The X-ray fluorescence method was used to analyze trace metals collected in particulate form on filter papers and from the ionic state by ion exchange filter papers. The samples were prepared by allowing water to pass through these filter papers. The procedures necessary for using the X-ray fluorescence method are described. A number of samples were taken from the Great Miami River in Dayton, Ohio over one year showing the presence of the following metals, Ca, Ti, Cr, Fe, Cu, Zn, Sr, and Cd. Elements in the periodic table between Ti and Cs were detectable to a sensitivity limit of the order of 30 ppb for metals in the particulate form and 0.4 ppm for metals in the ionic form.     

A composite medium approximation for unsaturated flow in layered sediments

Saturated-unsaturated flow in strictly layered sediments proceeds via conductors in parallel in the direction parallel to bedding, and via resistors in series in the direction perpendicular to bedding. On sufficiently small scales of space and time, flow in such media will be subject to approximate capillary equilibrium locally, which provides a basis for approximating the effective hydraulic conductivity of a composite multi-layer medium in terms of the conductivities of the individual layers. Equations for the hydraulic conductivity tensor in "composite medium approximation" (COMA) are given in a coordinate system aligned with bedding. Hydraulic conductivity parallel to bedding is generally larger than in the perpendicular direction. The anisotropy depends on the spread of the conductivity distribution, and tends to increase for dryer conditions. The COMA model was implemented in a multi-phase flow simulator and tested by comparison with high-resolution simulations in which all layering heterogeneity is resolved explicitly. Under favorable conditions, COMA is found to accurately represent sub-grid scale flow and transport processes, providing a practical method for simulating field-scale flow and transport in layered media. The approximation improves when layers are thinner, and when flow rates are smaller.     

表面过滤技术在焚烧厂烟气脱酸净化中的作用

随着城市垃圾焚烧工程的发展，国家对焚烧后尾气的处理技术提出了越来越高的要求。基于“表面过滤”理论的Gore过滤技术，不但为粉尘排放达到欧洲标准提供了技术保障，而且为脱酸／硫的后续反应提供了反应界面，在实际应用中可以有效节约反应剂。     

基于流媒体技术的远程教育平台的设计与实现

流媒体技术采用流式传输的方式在Internet／Intranet播放的媒体格式，其数据流随时传送随时播放，缩短了启动延时，降低了对系统缓存容量的需求，极大地减少了用户的等待时间，因此广泛应用于网络教育、网络电台、视频点播、收费播放等方面。文中主要介绍了流媒体技术的特点、原理，进一步阐述了用于在局域网和Internet中传送流式多媒体内容的开发工具windows media，给出了一种利用Windows media流媒体技术构建远程教育系统的具体方案，很好的解决了音频，视频信息的传送问题和数据间的同步问题。     

应用于高温干态过滤的三聚氰胺纤维过滤材料

ＬＦＢ是Ｂａｓｏｆｉｌ纤维与Ｍｅｔｍａｘ纤维混合制成的针刺毡，本文主要介绍Ｂａｓｏｆｉｌ纤维和ＬＦＢ的物理和化学特性。     

贵广I回工程HOM3系统软件缺陷改进方法

通过分析贵广I回工程HOM3光测量系统在极控和直流滤波器保护系统中的软件,找到了软件在处理激光管告警信号和通讯故障信息的差异和缺陷,并提出了修改方法。修改方法经过实时数字仿真系统(RTDS)仿真验证,能够区分激光管告警和通讯故障两种不同的顺序事件记录(SER)信息,并准确定位发生通讯故障的通道,对提高工程安全稳定运行具有重要意义。