导流板式煤粉燃烧器炉内空气动力场的试验研究

在３００ＭＷ锅炉模拟试验台上,比较了导流板式燃烧器在不同工况下的空气动力场。试验结果表明,当采用导流板式燃烧器,且整组燃烧器的高宽比不大于６．５～８．５时,调节导流板安装尺寸可有效地调节炉内空气动力场。当燃烧器组的高宽比大于１１．５,且导流板安装角度大于２５°时,炉内切圆直径很小,在热态运行时将导致燃烧不稳。本实验为这种燃烧器的推广应用提供了依据     

原子吸收光谱法测定 EMD 中 Co、Ni、Cu、Pb

论述了采用原子吸收光谱法测定ＥＭＤ中Ｃｏ、Ｎｉ、Ｃｕ、Ｐｂ的方法。对影响测定的因素进行了试验。试验结果表明：当ＥＭＤ中Ｍｎ（Ⅱ）含量不超过１５％时,用仪器的最佳工作条件测定。此法回收率为９９．７８％～１００．４５％之间,变异系数为０．２１％～０．７５％。     

矿热炉用熔渣烘炉

本文介绍了矿热炉开新炉时熔渣烘炉过程,烘炉时炉壳温度随时间的变化,并按每个烘炉阶段同传统的方法作了比较,表明这是一种节能烘炉方法。     

原子力显微镜及其在矿物加工中的应用

对原子力显微镜的基本原理、成像模式、实验装置及其在矿物加工中的新应用进行了评述和介绍。原子力显微镜将用于矿物表面原子级的显微在线分析, 可测量浮选体系中矿物的范氏力、水化力和疏水力。     

CS—444红外碳硫分析仪空白值的研讨

通过对ＣＳ－４４４碳硫分析仪空白的来源、测量和计算广阔支及空白值与助熔剂、坩埚、助燃气体和分析气路等因素的的研讨,提出了降低和稳定空白值的一些具体方法。     

石墨掺杂对B/KNO_3点火药的激光点火特性的影响

用光声检测的实验方法研究石墨掺杂对B／KNO3点火药的激光点火性能的影响。根据对光声谱的分析，指出了石墨掺入B／KNO3会略降低B／KNO3的激光吸收能力并且掺入量增加时，药剂的光吸收能力会有所改善。石墨掺杂会增长B／KNO3的激光点火延迟期，这一规律与石墨掺杂对B／KNO3的吸光性能的影响规律一致。     

二能级原子系统的瞬态共振荧光

本文研究了有无规力作用下能级原子算符间的对易关系以及有无规力作用下原子系统满是的Bloch方程的解,并具体应用于二能级原子系统瞬态共振荧光的计算。     

USE OF FINITE-DIFFERENCE TIME-DOMAIN METHOD FOR CALCULATING EM ABSORPTION IN LOSSY DIELECTRIC SCATTERER

The problem for calculating EM energy absorption by lossy dielectric scatterer ir-radiated by plane wave are discussed.The factors affecting the accuracy of computation arediscussed.The calculated results of EM energy absorption and its distribution in homogeneousand layered homogenous lossy dielectric spheres are presented,and a comparison of these resultswith analytical solution is given.The calculation is carried out for dielectric cylinder on conduct-ing ground as well,and the results are compared with the image theory.All the computationsshew that the finite-difference time-domain method can give satisfactory results.     

Post-combustion of mazut with CO2 capture using aspen hysys

There is a wide range of resources for CO₂ emissions. The net amount of CO₂ emissions in the cement industry due to the consumption of fossil fuels and the chemical processes of cement production under heating raw materials is reported to be in the range of 15–25%; this industry, among all the industries and after the power plants and refineries, is the largest CO₂ gas producer throughout the world. Using CO₂ capture and storage (CCS), it can reduce greenhouse gas emissions in a short time. In this study, the technical feasibility study of recycling CO₂ in Abyek Cement Company, with a cement production capacity of about 12,500 tons per day in two production lines, has been studied as one of the largest cement industries throughout the world. Fuel oil (Mazut) is used as the primary fuel for furnaces in this industry. Affected by combustion, the emissions emitted from the five-stage preheater contain 5/24% vol% of CO₂, 7.6% H₂O, 4.8% vol% of O₂, and 63.1% N₂.