Feature of dioxin generation during gasification of solid waste containing high Cl in fluidized-bed

郑皎1

doi:10.3969/j.issn.0438-1157.2012.03.033

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Feature of dioxin generation during gasification of solid waste containing high Cl in fluidized-bed

更新时间：2025-12-10

- Feature of dioxin generation during gasification of solid waste containing high Cl in fluidized-bed
- CIESC Journal Issue 3, Pages: 910-915(2012)
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- DOI：10.3969/j.issn.0438-1157.2012.03.033
  CLC： Q028.8
- Online First：05 March 2012，
  
  Published：05 March 2012
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郑皎1. Feature of dioxin generation during gasification of solid waste containing high Cl in fluidized-bed[J]. CIESC Journal, 2012, (3): 910-915.
DOI：

郑皎1. Feature of dioxin generation during gasification of solid waste containing high Cl in fluidized-bed[J]. CIESC Journal, 2012, (3): 910-915. DOI： 10.3969/j.issn.0438-1157.2012.03.033.

摘要

针对固体废弃物资源化过程中普遍关心的二噁英生成问题，利用自行设计建造的流化床气化综合实验平台对高含PVC模拟垃圾进行了流化床气化实验，讨论了PVC含量、空气计量系数对二噁英生成特性的影响规律。结果显示，对于PVC含量为20%的模拟垃圾，在空气计量系数由1.2降至0.4时，单位PVC的二噁英生成量和毒性当量分别由146.53 ng·g-1和20.71 ng I-TEQ·g-1降至2.07 ng·g-1和0.31 ng I-TEQ·g-1；在空气计量系数同为0.4时，随着PVC含量由20%降至1%，单位PVC的二噁英生成量及其毒性当量由23.54 ng·g-1和3.49 ng I-TEQ·g-1降至2.07 ng·g-1和0.31 ng I-TEQ·g-1。因此，在固废处理过程中，二噁英的生成风险随着PVC含量的增加而增加，而气化和低空气计量系数有利于抑制二噁英的生成。

Abstract

The generation of dioxin during recycling of solid waste is widely concerned. An experimental research on gasification of simulation garbage containing-high-PVC was carried out on a special designed integrated experimental platform for fluidized-bed gasification. The effects of PVC content and equivalent air ratio (ER) on feature of dioxins generation were discussed. The results show that when PVC content is 20% and ER decreases from 1.2 to 0.4

the yield and TEQ of dioxin produced per gram of PVC are decreased from 146.53 ng·g-1 and 20.71 ng I-TEQ·g-1 to 2.07 ng·g-1 and 0.31 ng I-TEQ·g-1

respectively. For the same ER 0.4 and PVC decreased from 20% to 1%

the yield and TEQ of dioxin produced per gram of PVC reduced from 23.54 ng·g-1 and 3.49 ng I-TEQ·g-1 to 2.07 ng·g-1 and 0.31 ng I-TEQ·g-1. That means that the risk of dioxin generation in gasification of the solid waste increases with PVC content

while low-air equivalent factor can suppress its generation.

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