铁水喷镁脱硫技术的应用

简述了涟钢铁水喷镁脱硫技术的设备概况、工艺流程和试生产情况。重点介绍处理过程的反应机理和控制方法，通过调整和改造，解决了钢水回硫的问题，实现了铁水脱硫-转炉-RH精炼炉-CSP的匹配。     

催化氧化法在液化气脱硫醇装置上的应用

介绍了MOYOX(催化氧化)法在液化气脱硫醇装置上的工业应用情况。实践证明,该工艺操作简单,成本合算,含硫量能降至3 mg/m3,铜片腐蚀效果也得到明显改善,具有很高的推广应用价值。     

Flue gas cleaning in power stations by using electron beam technology. Influence on PAH emissions

The electron beam technology (EBT), proven treatment for SO₂ and NO_x removal, is applied to different power stations as hot gas cleaning system. In this paper, an assessment of this technique installed in a Bulgarian power station on organic emissions is analyzed. The Polycyclic Aromatic Hydrocarbons (PAH) content, not only emitted in the gas phase but also trapped in the solid phase, has been carried out before and after the irradiation. The main aim has been to know whether the EBT affects organic emissions, like PAH, as it happens with inorganic pollutants, like SO₂ and NO_x, studying EBT effects from an organic environmental point of view.     

铸钢件裂纹与钢中夹杂物关系及减少措施

钢中夹杂物是铸钢裂纹产生的主要原因,同时对钢的质量和力学性能等有很大影响,必须严格控制.外来夹杂物可以根据其来源采取相应措施加以去除,而内生夹杂物却需通过脱氧工艺及钙处理工艺新技术加以控制.在冶炼过程中,要加强时脱氧、脱硫、去夹杂物、去气体等冶炼操作,并在炉后钢包内采取必要的措施,如加稀土进行变质处理等来改变夹杂物的形状,减少夹杂物,以降低铸钢裂纹倾向.     

铸态QT450-15高韧性球墨铸铁的生产

分析了化学成分、脱硫处理、球化及孕育处理等主要工艺因素对铸态QT450-15高韧性球墨铸铁铸件生产的影响.     

胺法脱硫工艺故障诊断系统的开发

根据宝钢化工公司二期脱硫的实际运行情况，结合生产操作经验．建立了数学模型和专家知识库。开发了胺法脱硫工艺故障诊断的专家系统，对提升煤化工生产操作有一定的借鉴。     

B2O3对CaO基渣精炼的助熔作用和脱硫的影响

使用RTW-08熔体物性测定仪通过旋转粘度计法测定了熔渣的粘度.试验结果表明,B2O3和CaF2在46%CaO-10%BaO-11.2%SiO2-11.6%Al2O3基础渣系中的助熔效果相当;在CaO-SiO2-10%BaO-11.6%Al2O3-10%CaF2基渣的碱度(CaO+BaO)/(SiO2+B2O3)为2.5和2.8时,用B2O3替代1/4 SiO2后精炼渣高温熔化性能稳定,粘度值降低至0.3～0.5 Pa·s;碱度2.8时,含20.6%SiO2渣剂的脱硫率为85%(S含量由0.008%降至0.001 6%),而含10.3%SiO2-10.3%B2O3渣剂的脱硫率为91.3%(S含量由0.008%降至0.000 7%).     

Simultaneous biodesulphurization and denitrification using an oil reservoir microbial culture: Effects of sulphide loading rate and sulphide to nitrate loading ratio

Biooxidation of sulphide under denitrifying conditions is a key process in control of souring in oil reservoirs and in treatment of gas and liquids contaminated with sulphide and nitrate. In this work, biooxidation of sulphide was studied using a representative culture originated from an oil reservoir. Effects of sulphide concentration, sulphide to nitrate molar ratio, and loading rates of sulphide and nitrate on their removal rates and composition of the end products were investigated. In the batch system sulphide removal rate passed through a maximum as sulphide concentration was increased from 2.1 to 16.3 mM, with the highest rate (2.06 mM h⁻¹) observed with 10.7 mM sulphide. Nitrate removal was coupled to sulphide oxidation and the highest removal rate was 1.05 mM h⁻¹. In the continuous bioreactors fed with 10 and 5, 15 and 7.5, and 20 and 10 mM sulphide and nitrate, cell wash-out occurred as dilution rate was increased above 0.15, 0.13 and 0.08 h⁻¹, respectively. Prior to cell wash-out linear increases in sulphide and nitrate removal rates were observed as loading rate was increased. The highest sulphide and nitrate removal rates of 2.0 and 0.92 mM h⁻¹ were obtained in the bioreactor fed with 15 mM sulphide and 7.5 mM nitrate at loading rates of 2.1 and 0.93 mM h⁻¹, respectively. Short residence times and high sulphide to nitrate ratios promoted the formation of sulphur, a desired end product for ex situ treatment of contaminated streams. Combination of long residence times and low sulphide to nitrate ratios, which favours formation of sulphate, is the suitable strategy for in situ removal of H₂S from oil reservoirs.     

贝壳脱硫性能的动力学研究

采用热重分析仪和压汞仪对4种贝壳和一种石灰石在不同反应条件下的脱硫性能和孔结构进行了试验研究。随SO：浓度的增加、反应时问的增加，贝壳与石灰石的钙转化率增加。贝壳的脱硫效果优于石灰石，其最佳脱硫温度比石灰石的高：扇贝壳的约为1050℃，海螺和毛蚶壳约为1000℃，花蛤约为950℃，而石灰石的约为900℃。煅烧贝壳的内部孔径在0．2～10μm之间，比表面积在0．6459～1．1389m^2/g，而石灰型CaO的孔径集中在0．02～0．1μm，比表面积为12．2209m^ 2／g。孔分布良好的贝壳具有较好的脱硫动力学特性，脱硫剂的钙转化率较高。     

管道喷射烟气脱硫性能及其脱硫产物分析

利用扫描电镜，分析了不同消化制备条件下消石灰的结构特性，在管道喷射试验装置上进行烟气脱硫的试验研究。结果表明，加NaCl加压消化所生成消石灰的颗粒粒度最小，比表面积最大；加压、加NaCl的脱硫产物的颗粒粒径较大，表面极不规则，有大量纤维状细颗粒附着，具有较高的粗糙度，为扩散和化学反应的最佳匹配创造了有利条件。在试验工况下，添加NaCl加压消化喷浆脱硫的脱硫效率最高。在Ca/S比为2．5的情况下，脱硫效率可以达到70％。