| 燃煤超细颗粒物团聚促进机制的实验研究 |
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| 引用本文： | 赵永椿,张军营,魏凤,陈俊,郑楚光.燃煤超细颗粒物团聚促进机制的实验研究[J].化工学报,2007,58(11):2876-2881. |
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| 作者姓名： | 赵永椿 张军营 魏凤 陈俊 郑楚光 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家重点基础研究发展计划(973计划)
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华中科技大学校科研和教改项目 |
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| 摘 要： | 煤粉燃烧排放大量超细颗粒物对大气环境和人类健康造成了严重的危害。提出一种燃后区烟尘团聚促进新方法，通过在燃后区烟道喷射团聚促进剂，利用絮凝理论，增加超细颗粒之间的液桥力和固桥力，促使超细颗粒物团聚长大，进而被现有除尘装置捕获，减少超细颗粒的排放。在自行设计搭建的团聚实验台上进行了系统的实验研究，分析了团聚促进剂溶液的pH值、流量、浓度，团聚室的温度以及模拟烟气中粉尘浓度等因素对超细颗粒物团聚效率的影响。结果表明，化学团聚对于超细颗粒物的脱除具有显著的作用，喷入团聚促进剂后的烟尘排放浓度远比无团聚和喷水的情况要低；团聚促进剂的高分子链对超细颗粒的吸附絮凝作用促进超细颗粒团聚，显著降低烟尘排放浓度，实现超细颗粒物经济高效脱除，达到国家新的烟尘排放标准。
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| 关 键 词： | 超细颗粒物 团聚 絮凝 煤燃烧 燃煤 超细颗粒物 促进机制 实验 研究 coal combustion particles agglomeration study 烟尘排放标准 国家 经济高效 颗粒团聚 絮凝作用 吸附 高分子链 情况 喷水 无团聚 烟尘排放浓度 |
| 文章编号： | 0438-1157（2007）11-2876-06 |
| 收稿时间： | 2006-12-11 |
| 修稿时间： | 2006-12-11 |
Experimental study on agglomeration of submicron particles from coal combustion |
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| ZHAO Yongchun,ZHANG Junying,WEI Feng,CHEN Jun,ZHENG Chuguang.Experimental study on agglomeration of submicron particles from coal combustion[J].Journal of Chemical Industry and Engineering(China),2007,58(11):2876-2881. |
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| Authors: | ZHAO Yongchun ZHANG Junying WEI Feng CHEN Jun ZHENG Chuguang |
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| Affiliation: | State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China |
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| Abstract: | The emission of submicron particles from coal combustion has caused serious damage to the environment and human health.A novel submicron particle agglomeration technique was developed to control the emission of submicron particle.The submicron particles were agglomerated by an agglomerant solution which was sprayed into the inlet of electrostatic precipitator(ESP),thus,the agglomerated submicron particles could be captured by the dust collecting equipment.Systematic experiments of submicron particle agglomeration were conducted,and the influence factors including pH value,flow rate,and concentration of agglomerant solutions were analyzed.In addition,the influence of temperature and particles concentration in the simulated flue gas was also discussed.With the addition of the agglomerant solution,the particle emission concentration in flue gas decreased significantly.The submicron particles agglomeration technology whose cost is cheaper can control the emissions of submicron particles and decrease the opacity of flue gas obviously without changing the operation parameters of the ESP.The particle agglomeration technique is a useful and promising method to control the emission of submicron particles from coal combustion. |
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| Keywords: | submicron particles agglomeration flocculation coal combustion |
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