铝钛双金属板KR曲线测定

利用宽３００ｍｍ、长／宽＝１的横向ＣＴＴ试样对国产铝钛双金属板做了常规力学性能测定，并按航标测定了ＫＲ曲线，经过柔度法和Ｋ值计算，分别测得了ＫＲｉ和ａｉ数据，确定了临界的ＫＣ值通过性能数据对比，研制的材料达到了进口料的性能要求。     

Characterization of Thai limestone for desulphurization in a fluidized bed combustor

The objective of this study is to determine the chemical kinetics of desulphurization of Thai limestone in an atmospheric fluidized bed combustor (AFBC). The experiments, which employed the batch technique using the limestone samples from six major sources in Thailand, were performed in a laboratory‐scale AFBC. The results obtained were analysed and correlated in the form of apparent reaction rate and deactivation rate constants as a function of operating conditions of the furnace and their properties, respectively. The formulae derived from these correlations were kept as general as possible in order that they could be used as input parameters for the selected mathematical model of desulphurization in an AFBC that is suitable for practical use. The predicted results were in good agreement with the experimental data reported in the literature. Copyright © 2003 John Wiley & Sons, Ltd.     

烟气脱硫技术述评及攀钢烧结烟气脱硫

针对攀钢当前和未来几年重点治污项目——烧结合硫烟气治理的实际需要，在世界十几种主要成熟的烟气脱硫工艺中，重点选取六种工业化应用程度较高的进行述评，分析了攀钢烧结烟气特性，对攀钢烧结烟气脱硫工艺选择提出了看法。     

化学冶金因素对埋弧焊焊缝硫磷含量的影响

通过试验和理论分析，探讨了在埋弧焊过程中，熔池中Ｓ，Ｐ的脱去过程，主要是以分别生成硫酸盐和磷酸盐的形式进行的化学冶金反应，并提出了熔池中的硫，磷脱去过程存在一个极限值，而这个极限值与焊剂的碱度和焊剂，焊丝及母材中的硫，磷含量有关。在焊剂碱度ＢＩ≥２．５的高碱度焊剂中，根据焊丝或焊剂中硫含量的不同，熔敷金属中硫的的极限值可低于焊丝中的硫含量或接近焊剂中的硫含量；而磷的极限值为０．０１０％±０．００２     

尾气脱硫装置在金隆公司的应用

介绍了新型高效尾气脱硫系统的设计及运行情况。该系统能确保尾气二氧化硫排放小于292mg／m^3，钠法和钙法运行时脱硫效率分别达到98％和95％。运行中循环液pH值和脱硫洗涤器喷嘴压力是影响脱硫效率的主要因素。     

Fine coal desulphurization by leaching with bromine containing hydrobromic acid

Sulphur extraction from coal by leaching with bromine-containing aqueous hydrobromic acid has been investigated in the temperature range from ambient to 120 °C. This procedure was found to be selective for the removal of high levels of sulphate and pyritic sulphur within a few minutes of leaching, while no significant reduction of the organic sulphur could be observed. Leaching led to an appreciable reduction of the ash yield and the up-take of substantial quantities of bromine. The bromine can be removed as hydrogen bromide by thermal treatment under nitrogen, without significant loss of volatile matter; for reduction of the bromine level to below 0.1 wt%, treatment for at least 1 h at ≈ 500 °C was needed.     

旋流板塔煤浆法烟气脱硫研究

煤浆法烟气脱硫是以煤浆洗涤含二氧化硫的烟气,二氧化硫溶于浆液形成亚硫酸,煤中黄铁矿与亚硫酸、氧气发生反应,亚硫酸被氧化为硫酸,从而实现烟气脱硫.反应过程中,煤中的黄铁矿硫也被转化为硫酸而浸出,反应产生的Fe3＋/Fe2＋又对脱硫反应起到了催化剂的作用.以旋流板塔为吸收设备,研究了煤浆法烟气脱硫过程中浆液温度、液气比、空塔气速及浆液固液比等操作参数对脱硫率的影响规律.试验表明,在其他条件不变的情况下,适当提高液气比、空塔气速及浆液固液比均有利于提高脱硫效果.随着烟气脱硫过程的进行,脱硫浆液中的总铁含量不断增加,说明煤中黄铁矿被不断浸出,故此法在脱除烟气中的二氧化硫的同时也降低了煤中黄铁矿硫含量.     

脱硫石膏－粉煤灰活性掺合料设计及水化特性

针对电厂两大工业废渣--烟气脱硫石膏及粉煤灰,通过试验研发用于混凝土的活性复合矿物掺合料.以适当比例复合后的脱硫石膏及粉煤灰等量取代水泥掺入到水泥砂浆中,通过活性激发措施,以胶砂流动度、早期强度以及强度发展规律等作为控制指标探索脱硫石膏及粉煤灰的最优配比,同时通过微细观结构的SEM观测评价脱硫石膏-粉煤灰活性矿物掺合料在水泥基材料中的作用效应.结果表明,脱硫石膏及粉煤灰以1:2的比例复合等量取代水泥30%掺入水泥砂浆中,可获得较为优异的胶砂流动度、早期强度,而后期强度能赶上甚至超过基准水泥胶砂;SEM表明由于脱硫石膏及其它外加组分的活性激发效应,粉煤灰的活性得到有效激发,早期有明显的钙矾石生成.脱硫石膏-粉煤灰复合矿物掺合料的研发可大量消纳燃煤电厂的工业废渣,且在水泥基材料体系中具有优异的水化及低成本特性,具有显著的"绿色"效应,符合中国"可持续发展"的战略要求.