Study on the Single and Coupled Combustion Kinetics and Mercury Emission Characteristics of Sewage sludge-coal Slime

被引：0

作者：

Jia L. ^{[1
]}

Cheng P. ^{[1
]}

Yu Y. ^{[2
]}

Wang Y. ^{[1
]}

Chen S. ^{[1
]}

Wang C. ^{[1
]}

Jin Y. ^{[1
]}

Fan B. ^{[1
]}

Wang J. ^{[3
]}

Zhang J. ^{[4
]}

机构：

[1] College of Electrical and Power Engineering, Taiyuan University of Technology, Shanxi Province, Taiyuan

[2] College of Economics and Management, Taiyuan University of Technology, Shanxi Province, Taiyuan

[3] Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Shanxi Province, Taiyuan

[4] Taiyuan Boiler Group Co., Ltd, Shanxi Province, Taiyuan

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2022年 / 42卷 / 23期

基金：

中国国家自然科学基金;

关键词：

co-combustion; coal slime; coupled fuel; mercury emission; sewage sludge;

D O I：

10.13334/j.0258-8013.pcsee.220645

中图分类号：

学科分类号：

摘要：

Focusing on the single-component and coupled fuel, and considering the complex and changeable co-combustion process, the micro-characteristics of combustion products and the reaction kinetics based on the distributed activation energy model were analyzed to reveal the influence of combustion conditions on the emission process of mercury pollution. The combustion characteristics and evolution process were also clarified, and the mercury emission characteristics under the condition of coupling multiparameters were obtained, aiming at realizing the clean and efficient resource utilization of sewage sludge and coal slime. The results show that the inorganic mercury compounds contained in sewage sludge and coal slime are α-HgS, HgSO4 and HgO with α-type hexagonal structure. The activation energy of sewage sludge increases first and then decreases with the increasing conversion rate; while the activation energy of coal slime is distributed in a "U" shape. The influence of O2 on the combustion and mercury emission process has a critical concentration, which dominates the pyrolysis and heterogeneous combustion of carbonaceous substances and volatiles. The mercury emission process in the coupled fuel co-combustion process is inhibited and promoted at 400~500℃ and 500~600℃ respectively due to the interaction. ©2022 Chin.Soc.for Elec.Eng.

引用

页码：8618 / 8630

页数：12

共 22 条

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