生物甲升级技术温室气体排放减缓的技术经济评估
Alessandro Agostini1, Marco Buffi2, Oliver Hurtig2
1ENEA-Italian National Agency for New Technologies, Energy and the Environment, Via Anguillarese 301, Rome, Italy.
Journal of environmental management
|June 13, 2024
概括
在生物甲工厂安装甲氧化装置只有当废气中的甲滑落率为0.3%或更高时才具有成本效益. 在这个门以下,每避免的CO2eq的成本无法与其他温室气体减排策略竞争.
科学领域:
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
- 气候科学 气候科学
背景情况:
- 欧洲生物气行业正在从发电转向生物甲生产,以取代天然气.
- 生物甲升级将甲与二氧化碳分离,释放含有二氧化碳的废气,这些废气可能仍然含有甲.
- 甲是一种强大的温室气体,其释放可以否定生物甲生产对气候的好处.
研究的目的:
- 评估在生物甲升级工厂安装离气燃烧 (OGC) 装置,特别是再生热氧化剂 (RTO) 的经济可行性.
- 为了确定甲氧化在减少生物气改造废气的温室气体 (GHG) 排放方面的成本效益.
- 确定RTO安装在经济上具有竞争力的地方升级废气中的甲滑行值.
主要方法:
- 审查当前的生物气升级技术和常见的OGC (RTO) 技术,包括它们的性能和成本.
- 通过实施RTO系统避免的每二氧化碳等效 (CO2eq) 排放成本的计算.
- 分析RTO成本效益与升级废气中的不同甲滑坡百分比的关系.
主要成果:
- 对于具有非常低甲滑坡 (例如,0.1%或99.9%的捕获) 的升级技术,由于增加的运营成本和有限的温室气体节约,RTO安装不具有成本竞争力.
- 当甲滑坡率为0.3%或更高时,RTO安装在减少温室气体排放方面变得具有成本竞争力.
- 在0.2%的甲滑坡下,每避免的CO2eq的成本在50-100欧元之间,相当于欧盟ETS碳价格,这表明潜在的监管门.
结论:
- 在生物甲升级中使用RTO用于甲减排的经济可行性高度依赖于甲滑坡率.
- 0.3%或更高的甲滑坡水平证明了RTO安装成本的合理性,以竞争性地减少温室气体排放.
- 拟定0.2%的甲滑行门,与欧盟碳市场成本保持一致,以有效监管生物气升级废气排放.
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