基于生命周期的白酒丢糟资源化新工艺技术环境影响研究

叶宁; 卢皓; 史晨; 吕一铮; 钱依森; 田金平; 张宿义; 胡永奇; 雷翔云; 陈吕军

doi:10.13205/j.hjgc.202401018

基于生命周期的白酒丢糟资源化新工艺技术环境影响研究

doi: 10.13205/j.hjgc.202401018

叶宁¹,
卢皓²,
史晨¹,
吕一铮¹,
钱依森¹,
田金平^1,3,
张宿义⁴,
胡永奇⁴,
雷翔云⁴,
陈吕军^1,3, ,

1. 清华大学环境学院, 北京 100084;
2. 清华大学生态文明研究中心, 北京 100084;
3. 中国地质大学(北京)土地科学技术学院, 北京 100083;
4. 泸州老窖股份有限公司, 四川泸州 646000

基金项目:

国家重点研发计划“固废资源化”重点专项(2018YFC1901101)；泸州老窖国宝生态研究协同中心资助项目

详细信息

作者简介:
叶宁(1993-),女,助理工程师,研究方向为产业生态学、生命周期评价。1136905272@qq.com

通讯作者:
陈吕军(1965-),男,教授,博导,研究方向为工业园区绿色发展、清洁生产技术与产业生态学。chenlj@tsinghua.edu.cn

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出版历程
- 收稿日期: 2023-02-20
- 网络出版日期: 2024-04-29

UNCOVERING LIFE CYCLE ENVIRONMENTAL IMPACTS OF NEW PROCESSES ON RESOURCES AND ENERGY RECOVERY OF BAIJIU DISTILLER’S GRAINS

1. School of Environment, Tsinghua University, Beijing 100084, China;
2. Center for Ecological Civilization, Tsinghua University, Beijing 100084, China;
3. School of Land Science and Technology, China University of Geosciences, Beijing 100083, China;
4. Lu Zhou Lao Jiao Co., Ltd., Luzhou 646000, China

摘要

摘要: 针对白酒酿造行业丢糟固废污染大、处理难等问题,以某大型白酒生产企业开发的丢糟热化学资源化、能源化新工艺为对象,运用物质流能量流分析、生命周期评价等方法,定量揭示新工艺技术不同应用情景下的环境影响。研究发现:与原丢糟处理工艺相比,丢糟热化学处理新工艺对酿酒全过程的全球暖化潜势、富营养化潜势等7类环境影响有显著改善,其中全球暖化潜势降幅可达40%~60%。但同时,因新工艺用电量为原工艺的19倍左右,新工艺全生命周期在人类毒性、海洋水生生态毒性、陆地生物毒性的环境影响比原系统分别高出9%、26%、73%。新工艺能源化产物的差异,对全生命周期10种环境有显著影响,副产热水的工艺路径全球暖化潜势较副产蒸汽增加49%。基于生命周期视角,建议新工艺热化学余热回收宜优先生产蒸汽,全系统蒸汽不足部分建议用天然气锅炉代替电锅炉生产,同时应强化重点设备的节能改造,以此显著降低白酒酿造全系统环境影响。
- 酿酒丢糟 /
- 循环经济 /
- 生命周期评价 /
- 物质流 /
- 能量流
Abstract: The baijiu industry has witnessed a long-existing challenge for recycling the distillers' grains(DG) to minimize its impact on the environment. A new thermochemical technology is developed for DG disposal by recovering materials and energy, defined as the new technology. This research used materials/energy flow analysis and life cycle assessment to evaluate the environmental impacts of this new technology under different scenarios. The key findings, as compared with the traditional technology are as follows: 1) the new technology, in large part, will contribute remarkable environmental benefits for the whole baijiu production process while considering seven typical life cycle environmental impact categories, and in particular, the global warming impacts will decrease by 40% to 60%. 2) the new technology will bring additional environmental burden in three categories, including 9% in human being toxicity, 26% in marine aquatic ecotoxicity, and 73% in terrestrial biological toxicity. The reason is that the new technology has electricity consumption 19 times that of the traditional technology. The new system has higher impacts in 10 categories when the new technology generates hot water than that generates steam, of which global warming impacts increase by 49%. Based on the assessment result, there are three methods to dramatically decrease the holistic environmental impacts of Baijiu production: 1) producing steam rather than hot water by using recovery thermochemical waste heat in the new DG disposal process; 2) using a natural gas boiler instead of an electric boiler; 3) upgrading the energy-saving facility and energy-intensive processes during scaling up.
- distillers' grains /
- resource utilization /
- energy recovery /
- life cycle assessment /
- material and energy flow analysis

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