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| 碳酰肼对烧结过程二噁英生成的抑制作用 | |
| 引用本文： | 谈琰,戴帆,李咸伟,俞勇梅,何晓蕾,陈德珍.碳酰肼对烧结过程二噁英生成的抑制作用[J].环境污染与防治,2012,34(5):48-53. |
| 作者姓名： | 谈琰 戴帆 李咸伟 俞勇梅 何晓蕾 陈德珍 |
| 作者单位： | 1. 上海交通大学环境科学与工程学院,上海,200240 2. 宝钢股份研究院炼铁与资源环境研究所,上海,201900 3. 同济大学热能与环境工程研究所,上海,200092 |
| 基金项目： | "十一五"国家科技支撑计划重点项目 |
| 摘 要： | 研究了碳酰肼对钢铁厂烧结工序产生的二噁英的抑制效果。结果表明,添加了0.01%(质量分数,下同)、0.02%、0.05%、0.10%的碳酰肼之后,二噁英的排放质量浓度降为0.560、0.506、0.270、0.174ng-TEQ/m3,相对于基准值(0.821ng-TEQ/m3)大幅减少。碳酰肼对二噁英的从头合成以及前驱物生成都能起到一定的抑制效果。碳酰肼与Cu2+结合生成稳定的氮化物,削弱Cu2+的催化活性;与HCl反应,减少了生成二噁英的氯源;对FeCl3、CuCl2的催化活性也会产生影响。碳酰肼添加后,对多氯代二苯并呋喃(PCDFs)生成中高氯代二噁英的脱氯行为也有明显的抑制。 |
| 关 键 词： | 二噁英 碳酰肼 烧结 抑制剂 |
Inhibitory effect of carbohydrazide on PCDD/Fs formation in iron ore sintering process |
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| TAN Yan , DAI Fan , LI Xianwei , YU Yongmei , HE Xiaolei , CHEN Dezhen.Inhibitory effect of carbohydrazide on PCDD/Fs formation in iron ore sintering process[J].Environmental Pollution & Control,2012,34(5):48-53. | |
| Authors: | TAN Yan DAI Fan LI Xianwei YU Yongmei HE Xiaolei CHEN Dezhen |
| Institution: | 1.School of Environmental Science & Engineering,Shanghai Jiao Tong University,Shanghai 200240;2.Institute of Puddling and Resources Environment,Academy of Baosteel Corporation,Shanghai 201900;3.Institute of Thermal and Environmental Engineering,Tongji University,Shanghai 200092) |
| Abstract: | The emission reduction experiments of dioxins from iron ore sintering process with addition of carbohydrazide as inhibitor were carried out.The results show that when adding 0.01%,0.02%,0.05% and 0.10%(weight ratio)carbohydrazide,the emission concentrations of dioxins are 0.560,0.506,0.270 and 0.174 ng-TEQ/m3,remarkably decreased compared with 0.821 ng-TEQ/m3 without adding carbohydrazide.Both the de novo synthesis and the formation from precursors of PCDD/Fs would be suppressed with addition of carbohydrazide.Carbohydrazide would weaken catalytic activity of Cu2+ by reacting with Cu2+ and formation the stable nitrogen compounds,it could also reduce the chlorine source of dioxins by reacting with HCl and impact on catalytic activity of FeCl3 and CuCl2.Dechlorination of higher chlorinated PCDFs would be suppressed with addition of carbohydrazide at the same time. |
| Keywords: | dioxins carbohydrazide sintering process inhibitor |
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