摘要
“双碳”背景下,开展生物质掺烧利用是大型燃煤机组实现降低CO_(2)排放最经济、可靠的技术手段之一。该文总结国内近15年大型燃煤机组耦合生物质发电技术路线,并对其痛点进行剖析。首次提出和设计全链条的生物质直接耦合发电模式,并在内蒙某电厂进行实施。充分利用电厂周边边际土地科学种植沙柳能源作物,改进并开发了机械化收割及生物质破碎压型工艺和装备,把控“种植-收割-转运-储存-预处理-燃烧”全链条每一个环节,保证生物质原料稳定及低成本供应。通过电厂试验数据验证,对生物质小比例掺烧(重量比例小于20%),推荐采用电厂零投资的“基于电厂现有制粉及燃烧设备的生物质耦合发电”技术路线;对于更大比例掺烧(重量比例大于20%),建议采用“新增生物质独立制粉及燃烧设备的生物质耦合发电”技术路线。
Under the background of China's carbon peak and carbon neutrality,the development of biomass co-firing with coal is one of the most economical and reliable technical routes for the large coal-fired power plants to significantly reduce CO_(2) emissions.This work summarizes the technical routes of the biomass direct co-firing in the power plant during the past 15 years,and analyzes the disadvantages.Moreover,a whole-chain biomass co-firing mode is proposed and implemented for the first time in a power plant in Inner Mongolia:the desert marginal land is reserved to plant Salix psammophila near the power plant;the devices of the mechanized harvesting and biomass crushing are modified;the whole-chain technical route of“plant-harvest-transport-storage-pretreatment-combustion”is adopted to provide the stable and low-cost biomass.Based on the field test data,when the biomass co-firing ratio is less than 20%,the technical route of“biomass co-firing in power plants based on the existing pulverizing and combustion equipment”with zero investment is recommended.When a large proportion of biomass is combusted with coal in the power plant,the technical route of“biomass co-firing in power plants with additional biomass independent pulverizing and combustion equipment”is preferential.
作者
谭厚章
杨富鑫
王新宁
李凤军
吴德利
赵旭
TAN Houzhang;YANG Fuxin;WANG Xinning;LI Fengjun;WU Deli;ZHAO Xu(MOE Key Laboratory of Thermo-fluid Science and Engineering(Xi’an Jiaotong University),Xi’an 710049,Shaanxi Province,China;SPIC Inner Mongolia Energy Co.,Ltd.,Ordos 017209,Inner Mongolia Autonomous Region,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2024年第2期631-641,I0016,共12页
Proceedings of the CSEE
基金
国家自然科学基金项目(51876162)。
关键词
燃煤机组
生物质掺烧
直接耦合
碳减排
coal-fired power plant
biomass co-firing
direct co-firing
CO_(2)emission reduction
