School of Environmental Science and Engineering, Huazhong University of Science andTechnology

热解是生物质能源化利用的一种主流技术,但针对多源生物质废物,尤其是中药渣类废弃物的协同热解工艺、物质转化规律和能效特征的理论模拟-验证反馈研究仍相对较少。 本文采用具有完备物性系统的 Aspen Plus 工业模拟软件,建立了生物质废物热解制炭仿真模型,并验证其可靠性。 将农林源废弃松木热解制炭实际运行工况数据进行了系统模拟,全面解析了协同利用大血藤类中药渣热解过程物质流和能量流,并对转化效率进行了综合评价。 研究结果表明,在现有单一废弃物工况下,热解系统的能耗为 2 580.7 MJ/ h,能效为 53.0%;在温度为 500 ~ 550 ℃ 的范围内内,模拟掺入 30% ~60%的大血藤中药渣协同热解,可以达到最佳的物料循环利用率和能效水平,系统能耗可降低 30% ~60%,系统能效可提高 3.0% ~6.0%。 本研究可为中药渣的协同热解提供科学依据。

Pyrolysis is a mainstream technology for biomass energy utilization, but theoretical simula⁃tion, verification feedback on the coordinated pyrolysis process, material conversion rules, and energyefficiency characteristics of multi-source biomass wastes, particularly Chinese medicinal residue, arestill relatively scarce. In this paper, Aspen Plus industrial simulation software with a complete physicalproperty system was used to establish a simulation model for biomass waste pyrolysis to produce carbon,and its reliability was verified. The actual pyrolysis process data of waste pine wood from agriculturalforest source were systematically simulated, the material flow and energy flow during the pyrolysisprocess of the sargentgloryvine stem medicine residue was analyzed, and the conversion efficiency wascomprehensively evaluated. The results showed that the energy consumption of the pyrolysis system was2 580.7 MJ / h, and the energy efficiency was 53.0% under the current single waste condition. At tem⁃peratures ranging from 500 to 550 ℃, 30% ~60% of traditional sargentgloryvine stem medicine residuewas simulated to be incorporated into the collaborative pyrolysis, which resulted in optimal material re⁃cycling efficiency and energy efficiency. The system′s energy consumption was reduced by 30% ~60%,and the energy efficiency of the system increased by 3.0% ~6.0%, which could provide scientific basisfor the collaborative pyrolysis of Chinese medicine residue.

国家重点研发计划资助项目(2019YFC1904001)

魏楚韵, 张金泰, 刘国庆, 等. 中药渣协同热解物质流和能量流分析[J]. 能源环境保护, 2023, 37(6):43-54.

WEI Chuyun, ZHANG Jintai, LIU Guoqing, et al. Analysis of material flow and energy flow in collaborative py⁃rolysis of Chinese medicine residue[J]. Energy Environmental Protection, 2023, 37(6): 43-54.