市政污泥与花生壳共热解协同效应及产物分布研究

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Abstract The co-pyrolysis of biomass/sewage sludge was demonstrated to facilitate efficient resource utilization, harmless treatment, and sludge volume reduction. Due to the complexity of co-pyrolysis reactions, it was deemed essential that the thermodynamic properties and product distribution of this process be systematically evaluated. The pyrolysis characteristics, synergistic effects, and product distribution of municipal sludge-peanut shell mixtures were investigated using thermogravimetric analysis and a fixed-bed reactor. It was observed that significant synergistic interactions were exhibited during municipal sludge/peanut shell co-pyrolysis, primarily during the volatile release stage, where the synergistic effect was found to accelerate mixture pyrolysis. When the conversion rate (α) was below 0.7, the apparent activation energy was progressively reduced with increasing sludge mass ratio (SMR). Conversely, when α exceeded 0.7, the apparent activation energy sharply increased with higher SMR. The gas yield was enhanced with elevated pyrolysis temperatures, while liquid and solid yields were significantly diminished. Elevated temperatures were also shown to promote H₂ and CH₄ generation. Product yields and synergistic effects were strongly influenced by SMR, with the most pronounced co-pyrolysis synergy observed at an SMR of 40wt.%.

Key words： biomass pyrolysis thermodynamics municipal sludge synergistic effect pyrolysis products

Received: 09 September 2024

PACS:	X705
	TK6
	TQ536.1

Corresponding Authors: 王云刚,责任作者,教授,ygwang1986@xjtu.edu.cn E-mail: ygwang1986@xjtu.edu.cn

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	GUO Shi-peng
	WANG Yun-gang
	BAI Yan-yuan
	XIU Hao-ran
	ZOU Li
	LI Fei-xiang
	ZHAO Qin-xin

Cite this article:

GUO Shi-peng,WANG Yun-gang,BAI Yan-yuan等. Investigation of synergistic pyrolysis effects and product distribution from Co-Pyrolysis of municipal sludge and peanut shells[J]. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(4): 2016-2027.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2025/V45/I4/2016

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