摘要
秸秆生物质炭是秸秆在无氧或限制性供氧条件下,经过一定的温度热解得到的固体产物。秸秆生物质炭由于其灰分含量高、热值偏低,不适合做活性炭、工业用炭甚至机制烧烤炭等,但秸秆炭可以作为肥料还田,被称为全营养肥,同源性好,更有利于作物的吸收,其不仅可以将原本作物生长过程中吸收的各种大量元素和中微量元素返回土壤,而且秸秆炭含碳量达65%以上,具有良好的固碳减排作用。本文结合南京林业大学生物质气化多联产团队近20年来对秸秆生物质炭的研究与产业化的情况,综述了秸秆制备生物质炭技术、设备及产业化进展,讨论了生物质炭化、干馏、气化联产炭技术的原料适应性、得率、产能和综合经济效益,以期为秸秆制炭产业的发展提供参考。
Straw biochar is a solid product formed by pyrolysis at high temperature under the condition without oxygen or restricted oxygen supply.Due to its high ash content and low calorific value,in areas such as activated carbon,industrial carbon application is limited.Returning straw biochar to the soil can play the role of biochar in carbon sequestration and emission reduction,relieve soil hardening.It can also help plants absorb metal trace elements to return to the soil,increase soil organic matter content,improve crop production and quality.The carbon content of straw charcoal is more than 65%to have a good role in carbon fixation and emission reduction.In this paper,combining with the biomass gasification polygeneration team of Nanjing Forestry University in the past 20 years on the biochar research and industrialization.We review the technology,equipment and industrialization progress of biochar production from straw.Raw material adaptability,yield,capacity and comprehensive economic benefits of straw biochar production from destructive distillation,carbonization and gasification are discussed to provide reference for the development of straw biochar industry.
作者
周建斌
马欢欢
章一蒙
ZHOU Jianbin;MA Huanhuan;ZHANG Yimeng(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210035,China;Jiangsu Biomass Gasification Polygeneration Engineering Research Center,Nanjing 210035,China)
出处
《生物加工过程》
CAS
2021年第4期345-357,共13页
Chinese Journal of Bioprocess Engineering
基金
国家级林草推广项目(2020133136)
国家重点研发计划(2016YFE0201800)。
关键词
秸秆
炭化
生物质炭
炭基肥料
碳中和
碳达峰
straw
carbonization
biochar
biochar-based fertilizer
carbon neutralization
carbon peak
