低碳化学与化工2025，Vol.50Issue(3)：82-88,7.DOI:10.12434/j.issn.2097-2547.20240269
蓝藻水热碳化制备固体燃料:燃料特性及燃烧行为
Fuel properties and combustion behavior of solid fuel prepared from blue-green algae through hydrothermal carbonization
摘要
Abstract
The moisture content of blue-green algae is over 99％.when using thermochemical treatment methods such as pyrolysis,it is necessary to dry and pretreat the blue-green algae,which consumes a high amount of energy.To address this issue,hydrothermal carbonization(HTC)was applied to blue-green algae with a moisture content of 92.94％.The effects of hydrothermal temperature(180 ℃ to 260 ℃),holding time(0 h to 3 h),and heating rate(1 ℃/min and 1 ℃/6 min)on the fuel properties and combustion behavior of the resultant hydrochar were studied.The results indicate that HTC treatment reduces the volatile content of algae by 9.92％to 29.13％,increases ash content by 8.54％to 25.52％,and enhances fixed carbon content by 0.82％to 5.26％.Combustion of hydrochar from blue-green algae occurs in three stages:dehydration,volatile release,and combustion of volatiles and fixed carbon.HTC treatment elevates the ignition temperature(505 K to 583 K)and burnout temperature(747 K to 812 K),which improves the storage and transport properties of the material.Kinetic analysis shows that the volatile release and its combustion stage follows a first-order reaction with an activation energy of 27.82 kJ/mol to 66.04 kJ/mol,while the fixed carbon combustion stage follows a second-order reaction with an activation energy of 38.65 kJ/mol to 65.68 kJ/mol.This study provides a reference for the resource utilization of blue-green algae.关键词
蓝藻/水热碳化/水热炭/燃料特性/动力学分析Key words
blue-green algae/hydrothermal carbonization/hydrochar/fuel properties/kinetic analysis分类
化学工程引用本文复制引用
周海云,张琳,王伟霞,徐振佳,袁思佳,鲍业闯,姚烘烨,赵培涛..蓝藻水热碳化制备固体燃料:燃料特性及燃烧行为[J].低碳化学与化工,2025,50(3):82-88,7.基金项目
江苏省科技项目(BE2021627,BE2022604) （BE2021627,BE2022604）
江苏省生态环境科研项目(2022003) （2022003）
江苏省环保集团科技项目(JSEP-TZ-2021-2008-RE,JSEP-TZ-2022-1008-RE). （JSEP-TZ-2021-2008-RE,JSEP-TZ-2022-1008-RE）
