Greenhouse gas performance of heat and electricity from wood pellet value chains – based on pellets for the Swedish market
Greenhouse gas performance of heat and electricity from wood pellet value chains – based on pellets for the Swedish market
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木屑颗粒价值链的热能和电力的温室气体性能——基于瑞典市场的颗粒
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发表时间：
2015
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通讯作者：
M. Gustavsson
中科院分区：
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作者：
J. Hansson;F. Martinsson;M. Gustavsson
生物能源需求的增加引发了对固体生物质燃料可持续性的讨论，欧盟内部也讨论了可持续性标准体系。本文评估了温室气体（GHG）排放量的热量和电力从选定的木屑颗粒价值链为瑞典市场和相关的潜在减排使用生命周期评估（LCA）的角度来看，与化石燃料，并在最近的欧盟政策发展中所描述的方法。评估了瑞典9个不同的用于供热和/或发电的木屑颗粒价值链（包括来自瑞典、拉脱维亚、俄罗斯和加拿大的颗粒）。敏感度分析中的选定假设有所不同。所研究的木质颗粒价值链转化设施的工厂温室气体排放总量在2至25克CO2当量/兆焦耳颗粒之间，瑞典颗粒在低端，俄罗斯颗粒使用天然气干燥原料在高端。从拉脱维亚、俄罗斯和加拿大进口的使用生物质进行干燥的颗粒也可能达到相对较低的温室气体排放水平。与某些化石燃料默认能源比较相比，所研究的颗粒价值链中产生的电力的潜在温室气体减排量为64-98%，产生的热量为77-99%。因此，从温室气体的角度来看，瑞典市场上的许多木屑颗粒价值链很可能能够满足对可持续性的严格要求。© 2015化学工业协会和约翰威利父子有限公司
Increased bioenergy demand has triggered a discussion on the sustainability of solid biomass‐based fuels and a system for sustainability criteria has been discussed within the EU. This paper assesses the greenhouse gas (GHG) emissions for heat and electricity from selected wood pellet value chains for the Swedish market and the associated potential emissions reduction in relation to fossil fuels using a life cycle assessment (LCA) perspective, and in relation to the approach described in recent EU policy developments. Nine different wood pellet value chains for heat and/or power production in Sweden are assessed (including pellets from Sweden, Latvia, Russia, and Canada). Selected assumptions are varied in a sensitivity analysis. The total factory‐gate GHG emissions at the conversion facility for the wood pellet value chains studied, range between 2 and 25 g CO2‐eq/MJ pellets with Swedish pellets at the lower end, and Russian pellets using natural gas for drying the raw material at the higher end. Imported pellets from Latvia, Russia, and Canada that use biomass for drying may also reach relatively low levels of GHG emissions. The potential GHG reduction as compared to a certain fossil fuel default energy comparator is 64–98% for the electricity produced in the pellet value chains studied and 77–99% for the heat produced. Thus, many wood pellet value chains on the Swedish market will most likely be able to meet strict demands for sustainability from a GHG perspective. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd