传统内热窑式生物质热解炭化技术产效平稳，炭品质优良，但热解气往往只经单一设备冷凝，副产品种类少，质量差，整体能量利用率及经济效益低下且存在环境问题，因此针对热解气提出多级冷凝的优化方案并结合某产炭厂生产数据进行分析。通过对生物油及不可冷凝气体产物的成分分析，建立该工艺下所产热解气的化合物模型，经过冷凝计算获得以三级冷凝为核心的生物质热解多联产系统。通过对该系统进行热力学性能及经济性等分析发现，优化方案的能量利用率由50.56%提升至71.07%；年利润增加额为改造投资的4.5倍，实现了生物质能源综合利用与降污减排的目的。

Traditional internal heat kiln biomass pyrolysis-carbonization technology exhibits a stable yield and produces excellent quality of carbon,but the pyrolysis gas is usually condensed by a single equipment,with few by-products,poor quality,low overall energy utilization rate and economic benefit,and environmental problems.Therefore,an optimization scheme for the pyrolysis gas is proposed combined with the production-data of a carbon production plant.Through analysis on the composition of bio-oil and non-condensable gas products,the compound model for the pyrolysis gas produced by this process is established,and the biomass pyrolysis polygeneration system with three-stage condensation as the core is obtained through condensation calculation.By analyzing the thermodynamic performance and economy of the system,it is found that the energy utilization ratio of the optimized scheme increases to 71.07% from 50.56% by traditional process.The additional annual profit is 4.5 times the renovation investment,and the purpose of biomass energy comprehensive utilization and pollution reduction has been realized.

陈晶晶(1994-),女,硕士生