酒糟厌氧发酵-气化耦合制备燃气环境影响评价

张笑颜; 王智; 李志宇; 李健; 颜蓓蓓; 左晓宇; 杨改秀; 陶俊宇; 陈冠益

doi:10.13205/j.hjgc.202401009

酒糟厌氧发酵-气化耦合制备燃气环境影响评价

doi: 10.13205/j.hjgc.202401009

1. 天津大学环境科学与工程学院, 天津 300072;
2. 北京化工大学环境科学与工程系, 北京 100029;
3. 中国科学院广州能源所中国科学院可再生能源重点实验室广东省新能源和可再生能源研究开发与应用重点实验室, 广州 510640;
4. 天津商业大学机械工程学院, 天津 300134

基金项目:

国家重点研发计划项目“基于厌氧发酵与化学链气化耦合的生物质全组分制备燃气创新技术研究”(2018YFE0111000)

详细信息

作者简介:
张笑颜(1999-),女,在读硕士研究生,主要研究方向为生物质废物生物-热化学耦合资源化利用。xiaoyanzhang@tju.edu.cn

通讯作者:
颜蓓蓓(1981-),女,教授,主要研究方向为有机固废热解气化及其污染物控制研究。yanbeibei@tju.edu.cn

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出版历程
- 收稿日期: 2023-01-19
- 网络出版日期: 2024-04-29

ENVIRONMENTAL IMPACT ASSESSMENT ON FUEL GAS PRODUCTION FROM DISTILLER’S GRAINS BY ANAEROBIC DIGESTION COUPLED WITH GASIFICATION

1. School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;
2. Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
3. Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
4. School of Mechanical Engineering, Tianjin University of Commerce, Tianjin 300134, China

摘要

摘要: 厌氧发酵-气化耦合技术是一种高效的生物质燃气化技术,具备显著的能源转化优势。为准确评估厌氧发酵程度对该耦合系统环境效益的影响,利用全生命周期分析方法,通过Gabi软件对所建立的不同厌氧发酵时间下酒糟厌氧发酵-气化耦合制备燃气模型进行环境影响评价。结果表明:厌氧发酵-气化梯度耦合反应系统基于能量流产生的环境正面影响可抵消基于物质流产生的环境负面影响,从而使系统获得正面的综合环境效益。厌氧发酵时间为8 d时系统环境影响结果最优,其环境影响潜值为-2.02×10^-9。对厌氧发酵-气化耦合系统的耦合程度进行控制,可在优化系统能量收益的同时产生最有利的环境影响,从而为耦合技术的应用提供理论指导。
- 酒糟 /
- 厌氧发酵-气化耦合 /
- 生命周期评价 /
- 环境影响
Abstract: As an efficient conversion pathway to produce biomass fuel gas, the integrated anaerobic digestion and gasification process shows significant advantages in energy conversion. To ascertain the effect of anaerobic digestion degree on the environmental benefits, a model of gradient-controlled anaerobic digestion and gasification integration process was built, and the distiller's grains were treated with different anaerobic digestion times. The life cycle analysis method and Gabi software were used to conduct the environmental impact assessment.Resultsshowed that the energy produced by the gradient-controlled coupled system can not only cover the drying of the biogas residue, but also achieve net energy output. And the positive environmental impacts based on energy flow can offset the negative environmental impacts based on material flow, so that the system can obtain positive comprehensive environmental impacts. The optimal total potential environmental impact of a 1000 kg distiller's grains system was-2.02×10^-9 with anaerobic digestion treatment lasting for 8 days. The control of the coupling degree of anaerobic digestion and gasification process makes the coupled system optimize its net energy output and have the most favorable environmental impact, so as to provide theoretical guidance for the application of the coupled process.
- distiller's grains /
- anaerobic digestion-gasification integration /
- life cycle assessment /
- environmental impact

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