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HE Xiaolei YU Yongmei LI Xianwei Environment & Resources Division Research Institute Baoshan Iron & Steel Co. Ltd. Shanghai China 《Baosteel Technical Research》2010,4(2):29-35
Comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometry(GC×GC-TOFMS)was applied to the quick qualitative analysis of 17 types of polychlorinated dibenzo-p-dioxins and furans(PCDD/Fs)from the iron ore sintering process.The GC×GC-TOFMS parameters were evaluated and optimized to yield a complete separation for the 17 types of PCCD/Fs from interference and to the attainment of high sensitivity.After optimization,all the 17 types of PCCD/Fs were separated within 42.5 min.Th... 相似文献
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YU Yongmei ) HE Xiaolei) LI Xianwei) ) Ironmaking Sustainability Division Research Institute Baoshan Iron & Steel Co. Ltd. Shanghai China ) State Key Laboratory of Environmental Chemistry Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China 《Baosteel Technical Research》2011,5(3):59-64
The distribution of seventeen gaseous and particle-bound 2,3,7,8-substituted chlorinated PCDD/Fs in the flue gas of different windboxes of the sintering machine was analyzed.The influence of temperature change on the PCDD/Fs emission from the sintering process and the formation mechanism of PCDD/Fs were discussed.The result has shown that among the seventeen gaseous and particle-bound PCDD/Fs in the flue gas of different windboxes,furans occupied the major place.The proportion of the gaseous PCDD/Fs in most windboxes is from 40% to 60%.The change tendencies of the concentration of both the gaseous and particle-bound PCDD/Fs were similar,with a higher level at the end of the sintering bed.The PCDD/Fs concentration’s change tendency in the windbox was very consistent with the change of temperature of the flue gas in the windboxes.More than 60% PCDD/Fs of the total PCDD/Fs emission amount was emitted at the end of the sintering bed.Only this part of the waste gas accounted for 12% of the total waste gas volume. 相似文献
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介绍了矿用KJZ馈电开关的一种互不干扰“漏电保护”功能改造方案,及其在双回路供电系统中的实现和应用。 相似文献
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本文通过对在Penzien模型基础上改进后的桩-土-杆系结构动力相互作用模型的研究,编制开发了简便、实用的桩-土-杆系结构动力相互作用分析通用程序DIPSFSA。结合工程实例计算结果表明,考虑共同工作与常规法基础固定某些情况下会有较大差别。本论文得出的结论对现行建筑结构抗震规范的修订有一定的参考价值。程序DIPSFSA可为设计人员对整个结构提供正确的反应与内力分布,对在III、IV类场地柔性地基上建筑物的抗震设计有一定的实用价值。 相似文献
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综述了国内外风电产业的发展现状和生产企业的生产现状,并从结构、制造等方面对碳纤维复合材料在风电行业的应用及发展优势进行了详细的介绍. 相似文献
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介绍了一种用于PAN原丝工业化生产装置的智能控制系统及其工作原理。通过在线监测凝固浴浓度(DMSO溶液),自动调节补水量,以维持凝固浴浓度的稳定。该装置的使用可提高工艺参数的控制精度,在腈纶湿法纺丝及PAN基碳纤维原丝工业化生产中具有广阔的应用前景。 相似文献