Techno-economic evaluation of BECCS via chemical looping combustion of Japanese woody biomass
Techno-economic evaluation of BECCS via chemical looping combustion of Japanese woody biomass
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DOI：
10.1016/j.ijggc.2019.01.019
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发表时间：
2019-04
影响因子：
3.9
通讯作者：
M. Keller;Kenji Kaibe;H. Hatano;J. Otomo
中科院分区：
文献类型：
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作者：
M. Keller;Kenji Kaibe;H. Hatano;J. Otomo
研究了日本木本生物质通过燃烧和随后的碳捕获和储存（BECCS）实现负排放的情况。为此，一种新的非混合燃烧技术，化学回路燃烧（CLC）是基准与燃烧后捕获的传统工艺。分析是基于详细的建模流化床CLC反应器的不同燃料输入规模。从文献数据中评估了BECCS链中其他工艺步骤的成本。这一技术经济分析确定二氧化碳液化和油罐车运输是最便宜的二氧化碳运输选择。CLC的使用导致每吨CO2捕获的成本节省了整个BECCS成本的17%，成本最佳的工厂规模为50 MWth。如果替代发电容量的CO2强度低于0.35 kgCO 2/kWh，则避免CO2的成本优于其他低碳技术（参见目前日本电网平均值为1.0000.53 kgCO 2/kWh）。
The use of Japanese woody biomass for negative emissions via combustion and subsequent carbon capture and storage (BECCS) is investigated. To this end a novel unmixed combustion technology, Chemical Looping Combustion (CLC) is benchmarked against a conventional process with post-combustion capture. The analysis is based on detailed modeling of fluidized-bed CLC reactors of different fuel-input scales. The costs of the other process steps in the BECCS chain were evaluated from literature data. This techno-economic analysis identified CO2liquefaction and transport by tanker trucks as the cheapest CO2transport option. The use of CLC resulted in cost savings of 17% of the entire BECCS cost per tonne of CO2captured, and the cost-optimal plant size was 50 MWth. The cost of CO2avoided compares favorably with other low-carbon technologies if the CO2intensity of the generation capacity that is replaced is below 0.35 kgCO2/kWh (cf. current Japanese grid average ∼0.53 kgCO2/kWh).