氯化C1和C2烃热破坏的数值模拟。

IF 2.7 4区 环境科学与生态学
E M Fisher, C P Koshland
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引用次数: 0

摘要

我们对少量几种氯化烃(CH3Cl, CH2Cl2, CHCl3, CCl4, C2H3Cl和C2H5Cl)在800至1480 K之间燃烧产物的稀薄混合物中的分解进行了数值模拟。这模拟了在液体喷射焚化炉中雾化不良的废物的命运。动力学计算使用CHEMKIN和SENKIN程序进行,反应机制由路易斯安那州立大学开发,用于模拟平焰燃烧器实验。在1280 ~ 960 K的温度范围内,一秒钟内的破坏效率达到99.99%,CCl4需要的破坏温度最高,C2H5Cl最低。对于除C2H5Cl以外的所有化合物,都有一个温度范围,在该温度范围内,副产物占出口氯元素的百分之几。氯化程度越重的化合物产生的副产物越多,尽管在所有情况下氯元素的含量是相同的。对于CHCl3,测试了结果对停留时间、等效比、温度分布和额外氯的存在的敏感性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical simulation of the thermal destruction of some chlorinated C1 and C2 hydrocarbons.

We have numerically modeled the breakdown of small quantities of several chlorinated hydrocarbons (CH3Cl, CH2Cl2, CHCl3, CCl4, C2H3Cl, and C2H5Cl) in a lean mixture of combustion products between 800 and 1480 K. This simulates the fate of poorly atomized waste in a liquid-injection incinerator. Kinetics calculations were performed using the CHEMKIN and SENKIN programs, with a reaction mechanism that was developed at Louisiana State University to model flat-flame burner experiments. A 99.99-percent destruction efficiency was attained in one second at temperatures ranging from 1280 to 960 K, with CCl4 requiring the highest temperature for destruction and C2H5Cl the lowest. For all compounds except C2H5Cl, there was a range of temperatures at which byproducts accounted for several percent of the elemental chlorine at the outlet. The more heavily chlorinated compounds formed more byproducts even though the amount of elemental chlorine was the same in all cases. The sensitivity of results to residence time, equivalence ratio, temperature profile, and the presence of additional chlorine, was examined for the case of CHCl3.

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来源期刊
自引率
3.70%
发文量
0
审稿时长
6 months
期刊介绍: The Journal of the Air & Waste Management Association (J&AWMA) is one of the oldest continuously published, peer-reviewed, technical environmental journals in the world. First published in 1951 under the name Air Repair, J&AWMA is intended to serve those occupationally involved in air pollution control and waste management through the publication of timely and reliable information.
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