固废基脱氯剂高温脱氯性能研究

王雪宁; 李辉; 胡莹莹; 沟玉瑾; 曹泰宇; 齐永乐; 郑伍魁

doi:10.13205/j.hjgc.202606009

固废基脱氯剂高温脱氯性能研究

doi: 10.13205/j.hjgc.202606009

西安建筑科技大学材料科学与工程学院, 西安 710055

基金项目:

国家重点研发计划项目（2021YFB3802003）

详细信息

作者简介:
王雪宁(2000-),女,硕士研究生,主要研究方向为固体废弃物资源化及生态胶凝材料的低碳制备。wxn18909844666@163.com

通讯作者:
郑伍魁(1983-),男,博士,副教授,主要研究方向为固体废弃物资源化及新型建筑材料。zheng.wukui@xauat.edu.cn

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出版历程
- 收稿日期: 2025-01-12
- 录用日期: 2025-03-13
- 修回日期: 2025-02-19
- 网络出版日期: 2026-07-06

High-temperature dechlorination performance of solid waste-based dechlorination agents

School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China

摘要

摘要: 随着我国经济与城市化发展，生活垃圾数量逐年增加，有效处置成为研究热点。工业窑炉协同处置生活垃圾是其中一种方式，但高温过程中生活垃圾会产生HCl、Cl₂等酸性气体，其循环累积会腐蚀设备、缩短寿命、增加维护成本。因此，高温脱氯成为协同处置的关键问题。以粉煤灰和赤泥作为主要原材料，探究其在高温下脱氯效果。研究表明：粉煤灰和赤泥在700 ℃时脱氯效果最高，分别为93.33%和88.61%，随着温度的升高，脱氯效率下降；为使粉煤灰脱氯效率及脱氯温度同步提升，对其进行了改性，研究发现，碱改性粉煤灰脱氯效率提升，在800 ℃条件下，脱氯效率从原来71.9%的提升到94.98%，可以更有效地吸附HCl气体。研究结果验证了固废作为脱氯剂的可行性，也为固废的资源化利用提供了新的方向。
- 高温 /
- 脱氯 /
- 固体废物 /
- 粉煤灰 /
- 赤泥 /
- 改性
Abstract: With China's rapid economic and urban growth， the amount of domestic waste is increasing annually. Effective disposal of domestic waste has become a research focus. Collaborative disposal of domestic waste in industrial kilns is an effective treatment method； however， high temperature generates Cl₂ and HCl gases， which cause equipment corrosion and reduce service life. High-temperature dechlorination is thus crucial for controlling chlorine release， minimizing equipment damage， and enhancing co-processing efficiency and safety. In this study， fly ash and red mud were selected as the primary raw materials to investigate their potential for dechlorination at high temperatures. Fly ash， a by-product of coal combustion， and red mud， a residue from alumina production， are abundant solid wastes that can potentially be utilized for this purpose. The results showed that at 700 ℃， fly ash achieved a dechlorination efficiency of 93.33%， while red mud achieved 88.61%. These findings suggest that both materials have considerable potential for dechlorination. However， as the temperature increased， the dechlorination efficiency of both materials declined. To address this issue and optimize the dechlorination efficiency of fly ash， modification studies were conducted. The results indicated that alkali-modified fly ash significantly improved its dechlorination efficiency. Specifically， at 800 ℃， the dechlorination efficiency of alkali-modified fly ash increased from 71.9% to 94.98%. This suggests that alkali modification enhances the dechlorination capability of fly ash and enables more effective adsorption of HCl gas. Overall， this study not only verifies the feasibility of using solid waste as a dechlorination agent but also opens up new avenues for the resource utilization of solid waste. By repurposing fly ash and red mud for high-temperature dechlorination， this study contributes to more sustainable waste management practices and reduces the environmental footprint of industrial processes.
- high temperature /
- dechlorination /
- solid waste /
- fly ash /
- red mud /
- modification

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参考文献(28)

[1]	State Statistical Bureau. China statistical yearbook[M]. Beijing：China statistics press，2004. 国家统计局. 中国统计年鉴[M]. 北京：中国统计出版社，2004.
[2]	State Statistical Bureau. China statistical yearbook[M]. Beijing：China Statistics Press，2024. 国家统计局. 中国统计年鉴[M]. 北京：中国统计出版社，2024.
[3]	ZHU T，FAN S H，LI F R，et al. Progress in the collaborative disposal of industrial kilns for solid waste[J]. Chemical Industry Environmental Protection，2024，44（1）：1-10. 竹涛，范诗晗，李芙蓉，等. 固体废物的工业窑炉协同处置进展[J]. 化工环保，2024，44（1）：1-10.
[4]	JIANG S M，MAI Y Q，LAI Y H，et al. New ideas of fly ash dechlorination of household waste incineration[J]. Renewable Resources and Circular Economy，2024（8）：32-35. 江思敏，麦雅晴，赖颖慧，等. 生活垃圾焚烧飞灰脱氯资源化新思路[J]. 再生资源与循环经济. 2024（8）：32-35.
[5]	CAI Y L，HONG Q. Safety and control measures of waste disposal process equipment in cement kiln cooperation[J]. Chinese Cement，2019（1）：93-99. 蔡玉良，洪旗. 水泥窑协同处置废弃物过程设备安全及控制措施[J]. 中国水泥，2019（1）：93-99.
[6]	LI R. Preparation of calcium-based dechlorination agent and its properties[D]. Wuhan：Wuhan Textile University，2017. 李锐. 钙基脱氯剂的制备及其性能研究[D]. 武汉：武汉纺织大学，2017.
[7]	LI Y B，YANG C，WANG X J，et al. Research and application of dechlorination of zinc oxide[J]. Mining and Metallurgy Engineering，2012（5）：98-100. 李义兵，杨超，王小军，等. 氧化锌碱法脱氯工艺研究及应用[J]. 矿冶工程，2012（5）：98-100.
[8]	LI S Y，DU C X. Research and application of dechlorination agent of catalytic reforming series[J]. Petroleum refining and chemical industry，2006（2）：24-29. 李生运，杜彩霞. 催化重整系列脱氯剂的研究与应用[J]. 石油炼制与化工，2006（2）：24-29.
[9]	TANG H J，LI C F，DUAN Y F，et al. Combined experimental and theoretical studies on adsorption mechanisms of gaseous mercury（Ⅱ）by calcium-based sorbents：The effect of unsaturated oxygen sites[J]. Science of the Total Environment，2019，656：937-945.
[10]	TANG H J，DUAN Y F，ZHU C，et al. Theoretical evaluation on selective adsorption characteristics of alkali metal-based sorbents for gaseous oxidized mercury[J]. Chemosphere，2017，184：711-719.
[11]	HUANG T F，LIU X S，GENG X Z，et al. Reduction of HgCl₂ to HgO in flue gas at high temperature. Part Ⅱ：Acid remover[J]. Fuel，2022，324：124412.
[12]	CAO J，ZHONG W Q，JIN B S，et al. Treatment of hydrochloric acid in flue gas from municipal solid waste incineration with Ca-Mg-Al mixed oxides at medium-high temperatures[J]. Energy& Fuels，2014，28（6）：4112-4117.
[13]	GARGIULO N，PELUSO A，APREA P，et al. Use of a metal organic framework for the adsorptive removal of gaseous HCl：a new approach for a challenging task[J]. ACS Applied Materials& Interfaces，2018，10（17）：14271-14275.
[14]	LIN G M，CHYANG C S，Removal of HCl in flue gases by calcined limestone at high temperatures[J]. Energy& Fuels，2017，31（11），12417-12424.
[15]	JIANG X G，LI Q，LI X P，et al. Experimental study on the absorption effect of calcium-based and magnesium-based absorbers on HCl during coal burning[J]. The Coal Journal，2003（6）：626-630. 蒋旭光，李琦，李香排，等. 燃煤过程中钙基及镁基吸收剂对HCl吸收作用的试验研究[J]. 煤炭学报，2003（6）：626-630.
[16]	LIU C，SHAN H F. Study on HCl in calcium-based dechlorination[J]. Liaoning Chemical Industry，2024（1）：65-67. 刘聪，单红飞. 钙基脱氯剂脱除重整高温烟气中HCl的研究[J]. 辽宁化工，2024（1）：65-67.
[17]	LIU H，KONG S F，LIU Y S，et al. Removal of hydrogen chloride from high-temperature flue gas by titanium dioxide[J]. Chinese Journal of Environmental Engineering，2014，8（9）：3875-3880. 刘惠，孔丝纺，刘阳生，等. 二氧化钛脱除高温烟气中的氯化氢[J]. 环境工程学报，2014，8（9）：3875-3880.
[18]	XIU F R，XUAN Y，QIAO Y Y. A high-efficiency and low-temperature subcritical water dechlorination strategy of polyvinyl chloride using coal fly ash（CFA）and coal gangue（CG）as enhancers[J]. Journal of Cleaner Production，2020，260：121085.
[19]	SHARMA Y C，SINGH S N，GODE F. Fly ash for the removal of Mn（II）from aqueous solutions and wastewaters[J]. Chemical Engineering Journal，2007，132（1/3）：319-323.
[20]	SHI Y F，CHEN Y，XU Y F. Progress of fly ash in flue gas treatment[J]. Acid Salt Notification，2014，33（12）：3225-3229. 施云芬，陈媛，徐云菲. 粉煤灰在烟气处理中的研究进展[J]. 酸盐通报，2014，33（12）：3225-3229.
[21]	LI Y Z. Study on removal of sulfur dioxide from flue gas with red mud[J]. Light Metals，2014（3）：14-19. 李云中. 利用赤泥脱除烟气二氧化硫的研究[J]. 轻金属，2014（3）：14-19.
[22]	WAN D. Study of hydrogen chloride removal by calcium oxide at high temperature[D]. Wuhan：Huazhong University of Science and Technology，2013. 万旦. 高温下氧化钙脱除氯化氢研究[D]. 武汉：华中科技大学，2013.
[23]	JIANG X G，LI X P，CHI Y，et al. Control of HCl in fixed bed incineration[J]. Thermal Energy and Power Engineering，2004，（5）：487-490. 蒋旭光，李香排，池涌，等. 木屑在固定床焚烧中HCl的控制研究[J]. 热能动力工程，2004，（5）：487-490.
[24]	DENG Y X. PVC Heat treatment dechlorination to inhibit dioxin generation technology[D]. Lanzhou：Lanzhou University，2021. 邓悠娴. PVC热处理脱氯抑制二噁英生成技术[D]. 兰州：兰州大学，2021.
[25]	JIN Y Q，XU X，LI W W，et al. Experimental study on HCl emission and removal of municipal waste incineration[J]. Combustion Science and Technology，2001（4）：270-273. 金余其，徐旭，李威武，等. 城市垃圾焚烧HCl排放与脱除试验研究[J]. 燃烧科学与技术，2001（4）：270-273.
[26]	HU C H，CAO J，JIN B S. Dehlorination performance of three types of hydrotalc in medium-high temperature conditions[J]. Journal of Southeast University：Natural Science Edition，2016（4）：782-787. 胡春红，曹俊，金保昇. 3种类水滑石在中高温条件下的脱氯性能[J]. 东南大学学报：自然科学版，2016（4）：782-787.
[27]	PARK S S，YOUNG K H，SANG H，et al. Effects of NaOH and Na₂SiO₃·9H₂O addition on strength development of class f fly ash-mortar[J]. Journal of the Korea Institute for Structural Maintenance and Inspection，2005（9）：261-269.
[28]	MENG X J，CHEN H. Research progress on the method and mechanism of fly ash modification[J]. Guangzhou Chemical Industry，2022（9）：20-22. 孟晓静，陈华. 粉煤灰改性方法及机理的研究进展[J]. 广州化工，2022（9）：20-22.