摘要
在“双碳”战略驱动下,中国建材行业积极推动燃料替代,实现低碳转型。本文从技术、经济及环境可行性角度,系统评估生物炭燃料在水泥、玻璃等建材领域的替代潜力。研究发现木本类生物炭热值普遍高于30 MJ/kg,硫含量低于0.5%,理化性质与燃烧特性均满足行业燃料需求。工艺适配需改造进料和燃烧系统,同时控制氯碱元素以降低结皮风险。经济分析表明,生物炭生产成本约为1636元/t,高于煤炭的900元/t。但较2000~2300元/t的中硫焦粉具备经济竞争力,生物炭燃料应用于玻璃行业可使燃料成本降低13.8%。生物炭生产具备-1694.3 kgCO_(2)e/t的碳负效益,替代煤炭和石油焦粉可分别实现236.6 kgCO_(2)e/t与717.7 kgCO_(2)e/t的净减排。研究证实生物炭燃料具备工业化替代潜力,建议未来通过工艺升级、工业试验、政策协同突破瓶颈。
Driven by the Dual Carbon Strategy,China’s building materials industry is proactively advancing fuel substitution to achieve low-carbon transition.This paper systematically evaluates the substitution potential of biochar in the building materials industry such as cement and glass industries,from the perspective of technical,economic,and environmental feasibility.The study reveals the calorific value of woody biochar is generally exceeding 30 MJ/kg,and the sulfur content is less than 0.5%.Its physicochemical properties and combustion characteristics both meet industrial fuel requirements.Retrofitting of combustion and feeding systems are required for technological adaptation of biochar fuel,along with alkali and chlorine element control mitigating coating hazards.Economic analysis indicates that the production cost of biochar is about CNY 1,636/t,which is higher than coal at CNY 900/t.Compared with medium-sulfur petroleum coke powder priced at CNY 2,000-2,300/t,biochar is more economically competitive.This advantage enables glass manufacturing to save 13.8% fuel cost.Biochar production delivers a carbon-negative benefit of -1,694.3 kgCO_(2)e/t.When replacing petroleum coke powder and coal,the net emission reductions are 236.6 kgCO_(2)e/t and 717.7 kgCO_(2)e/t,respectively.The study confirms that biochar fuel is industrially feasible and recommends overcoming bottlenecks through process optimization,industrial trials,and policy coordination.
作者
王舒宁
沈克俭
张景乐
WANG Shuning;SHEN Kejian;ZHANG Jingle(CNBM Design&Research Institute Co.,Ltd.,Hangzhou 310022)
出处
《中国建材科技》
2025年第S1期92-103,共12页
China Building Materials Science & Technology
关键词
生物炭
替代燃料
水泥窑
玻璃熔窑
biochar
alternative fuels
cement kilns
glass furnaces
