焚烧飞灰中六价铬化合物碳热还原脱毒
赵国栋 熊卓赵永椿张军营
(华中科技大学能源与动力工程学院,煤燃烧国家重点实验室,湖北 武汉 430074)
DOI:10.11949/0438-1157.20240058
Detoxification of hexavalent chromium compounds in incineration fly ash by carbothermal reduction
ZHAO Guodong XIONG ZhuoZHAO YongchunZHANG Junying
(State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China)
引 言
1 实 验
1.1 材料
表1 飞灰中4种氧化物的占比Table 1 Percentage of four oxides in fly ash
1.2 样品制备
表2 BC和PAC的化学成分和工业分析Table 2 Chemical compositions and industrial analysis of BC and PAC
表3 BC和PAC的比表面积Table 3 Specific surface area of BC and PAC
表4 热力学计算参数Table 4 Thermodynamic calculation parameters
1.3 样品表征
1.4 热力学计算
2 结果与讨论
2.1 BC和PAC与Na2CrO4的反应
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
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(9) |
2.2 掺杂不同比例BC对配灰中Cr形态转化的影响
(10) |
(11) |
(12) |
(13) |
(14) |
(15) |
(16) |
(17) |
(18) |
(19) |
(20) |
(21) |
(22) |
(23) |
(24) |
(25) |
2.3 掺杂不同比例BC对飞灰中Cr形态转化的影响
(26) |
3 碳热还原机理分析
4 结 论
引用本文: 赵国栋, 熊卓, 赵永椿, 张军营. 焚烧飞灰中六价铬化合物碳热还原脱毒[J]. 化工学报, 2024, 75(10): 3730-3741 (ZHAO Guodong, XIONG Zhuo, ZHAO Yongchun, ZHANG Junying. Detoxification of hexavalent chromium compounds in incineration fly ash by carbothermal reduction[J]. CIESC Journal, 2024, 75(10): 3730-3741)
第一作者:赵国栋(1999—),男,硕士研究生,2577166585@qq.com
通讯作者:张军营(1963—),男,博士,教授,jyzhang@hust.edu.cn