宝钢烧结烟气活性炭净化工艺和装备

doi:10.13228/j.boyuan.issn0449-749x.20170344

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摘要介绍了国内首套自主设计和制造的烧结烟气活性炭净化系统各种污染物脱除机理、工艺流程和系统装备，主要包括烟道系统、吸附系统、解析系统、活性炭储运系统等。对各主要系统内部结构、工作原理、相关设计和运行工艺参数进行了详细说明，对该系统的技术特点和投运后实际烟气净化效果进行了详细介绍。该系统具有污染物脱除率高、运行稳定可靠的优点。处理前烟气中SO2质量浓度为412.091～642.811 mg/m3，处理后SO2质量浓度为1.227～7.999 mg/m3，SO2脱除率为98.53%～99.76%；处理前[NOx]质量浓度为235.451～365.218 mg/m3，处理后[NOx]质量浓度为92.707～137.663 mg/m3，[NOx]脱除率为57.63%～69.44%；处理前二英的毒性当量为0.82～5.40 ngTEQ/m3，处理后下降到0.002 3～0.008 9 ngTEQ/m3，二英脱除率为99.43%～99.89%；经过净化后粉尘质量浓度为7.747～11.500 mg/m3。结合生产运行情况对该烧结烟气活性炭净化系统做出了适当评价并对其推广应用前景进行了展望。

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	汪庆国

关键词 ：烧结烟气, 活性炭, 净化原理, 工艺流程, 主要装备, 技术特点, 净化效果, 应用前景

Abstract：The removal mechanisms for main pollutants in sintering flue gas，process flow for flue gas purification and systematical equipment of the sintering flue gas purifying systems by activated coke were introduced in detail，which is the first self-designing and manufacturing purifying system of its kind in China. The major facilities including flue system，adsorption system，desorption system，activated coke storage and transportation system were systematically and completely illustrated. The inner structure，working principle and relevant designing and operating parameters of some major equipment were concisely presented. The technological characteristics of this purifying system were summarized through analyzing and the actual treatment effect was presented，which had the advantages of high reduction rate of pollutants and steady and reliable operating performance. SO2 content ranges from 412.091 to 642.811 mg/m3 before being purified，while its content is decreased between 1.227 and 7.999 mg/m3 after treatment，with a high removal rate from 98.53% to 99.76% on the basis of daily averages. [NOx]content ranges from 235.451 to 365.218 mg/m3 before being purified，while its content is decreased between 92.707 and 137.663 mg/m3 after treatment，with a removal rate from 57.63% to 69.44%. The toxic equivalent quantity of dioxin ranges from 0.82 to 5.40 ngTEQ/m3 before being purified，while its TEQ is decreased between 0.002 3 and 0.008 9 ngTEQ/m3 after treatment，with a high removal rate from 99.43% to 99.89%. The dust content after treatment is decreased between 7.747 and 11.500 mg/m3. An evaluating conclusion on this purifying system was drawn based on the actual treatment effect and practical run performance. Meanwhile，the application prospect of this new purifying system was predicted.

收稿日期: 2017-07-05 出版日期: 2018-03-16

PACS:

TF046.4

引用本文:

汪庆国，朱彤，李勇 . 宝钢烧结烟气活性炭净化工艺和装备[J]. , 2018, 53(3): 87-95. WANG Qing-guo，，ZHU Tong，LI Yong. Sintering flue gas purifying process and equipment by use of activated coke in Baosteel. Iron and Steel, 2018, 53(3): 87-95.

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