High temperature chlorination of PbO by NaCl and Si/Al matrix

您当前的位置：

首页 >

文章列表页 >

High temperature chlorination of PbO by NaCl and Si/Al matrix

更新时间：2025-12-10

- High temperature chlorination of PbO by NaCl and Si/Al matrix
- CIESC Journal Issue 9, Pages: 3993-4000(2018)
- 作者机构：
  
  1. 南京师范大学能源与机械工程学院, 江苏省物质循环与污染控制重点实验室,江苏,南京,210042
  2. 东南大学能源与环境学院, 能源热转换及其过程测控教育部重点实验室,江苏,南京,210096
  3. 南京上元工业气体厂,江苏,南京,211100
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20180206
  CLC： K16
- Online First：05 September 2018，
  
  Published：05 September 2018
- 稿件说明：
移动端阅览
WANG Xinye, DU Rong, ZHANG Chengwen, et al. High temperature chlorination of PbO by NaCl and Si/Al matrix[J]. CIESC Journal, 2018, (9): 3993-4000.
DOI：

WANG Xinye, DU Rong, ZHANG Chengwen, et al. High temperature chlorination of PbO by NaCl and Si/Al matrix[J]. CIESC Journal, 2018, (9): 3993-4000. DOI： 10.11949/j.issn.0438-1157.20180206.

摘要

垃圾焚烧过程中，在灰中Si/Al基质的作用，NaCl可以将不易挥发的PbO转化为易挥发的PbCl2，从而显著增加烟气中的Pb排放。使用管式炉加热NaCl/Si/Al基质/PbO反应物体系，通过分析升温过程Cl和Pb的释放过程，从间接氯化和直接氯化角度，探索了高温氯化规律与机制。试验发现，间接氯化时氧气中有水蒸气比无水蒸气更有利于反应，Al2O3比SiO2更有利于反应，初始氯化温度通常为700~800℃，NaCl以气态形式参与反应；通过SiO2直接氯化时，约500℃时PbO与SiO2反应生成硅酸盐，然后与NaCl蒸气反应，初始氯化温度约650℃；通过Al2O3直接氯化时，700~800℃时PbO与Al2O3反应生成铝酸盐，然后与NaCl蒸气反应；向SiO2中添加Al2O3会阻碍PbO与SiO2的反应，氯释放特征由SiO2基质型向Al2O3基质型转变，初始氯化温度升高至700~800℃。

Abstract

During waste incineration

PbO (difficult to volatilize) can be chlorinated to PbCl2 (easy to volatilize) by the interaction of NaCl and Si/Al in ash at high temperature. The mechanisms of this transformation were investigated by analyzing the release of chlorine and lead in the view of indirect and direct chlorination during the tube furnace incineration at rising temperature. During the indirect chlorination initialized at 700-800℃

oxygen containing water vapor was found more favorable to reaction than oxygen without water vapor

while Al2O3 was more favorable than SiO2. NaCl was found as vapor to participate indirect chlorination. During the direct chlorination through SiO2

PbO reacted with SiO2 first to form silicate at about 500℃

and then reacted with NaCl vapor produced initially at about 650℃. During the direct chlorination through Al2O3

PbO reacted with Al2O3 first to form aluminate at 700-800℃

and then reacted with NaCl. When Al2O3 was mixed with SiO2

the direct chlorination properties turned from SiO2 matrix type to Al2O3 matrix type

and the initial chlorination temperature increased from about 650℃ to 700-800℃.

关键词

Keywords

references

0

Views

44

下载量

0

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Related Articles

Characterisation of nitrogenous pollutants in solid wastes associated with waste incineration process using polymer non-catalytic reduction denitrification

Study on on-line monitoring and selective catalytic reduction removal of aromatic hydrocarbon from the flue gas of waste incineration

Preparation of nanofiltration membrane for separation of mixed monovalent salts

Surface modification of reverse osmosis membrane by electrostatic deposition of polyelectrolyte for performance improvement

Molecular Dynamics Simulation Study on the Synergistic Regulation of Early Nucleation Mechanism of Calcium Carbonate by NaCl and Additives

Related Author

XIAO Yuguo

ZHU Chuanqiang

ZHANG Ru

ZHANG Dong

HUANG Zheng

LI Ming

LI Changming

YAO Hong

Related Institution

Everbright Environmental Technology (China) Co., Ltd., Incineration Technology Research Institute

School of Light Industry Science and Engineering, Beijing Technology and Business University

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology

Grandblue (Foshan) Green Electricity Solid Waste Management Co., Ltd.

Dalian Institute of Chemical Physics, Chinese Academy of Science

⁰