Cost and CO 2 reduction of biomass co-firing using waste wood biomass in Tohoku region, Japan
Cost and CO 2 reduction of biomass co-firing using waste wood biomass in Tohoku region, Japan
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日本东北地区利用废弃木材生物质进行生物质混烧的成本和 CO 2 减少
DOI：
10.1016/j.jclepro.2017.11.041
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发表时间：
2018
影响因子：
11.1
通讯作者：
Nakata Toshihiko
中科院分区：
文献类型：
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作者：
Furubayashi Takaaki;Nakata Toshihiko
本文旨在估算日本东北地区木材生物质混烧的成本和二氧化碳排放量。设计了一个木质生物质供应系统，该系统包括采集、资源输送、预处理和燃料输送四个过程。前处理又分为两个过程：干燥和燃料生产。以锯木厂废渣、建筑垃圾、林木废渣、间伐废渣、果树修剪废渣为原料。木屑、颗粒和精炼颗粒(称为黑色颗粒)被视为生物燃料。利用地理信息系统(GIS)优化了原材料和生物燃料的运输路径。在东北地区，原料的可获得性为3.6PJ/y，结果表明，前处理厂的选址应在该地区广泛分布，因为资源运输成本对成本和排放的影响明显大于前处理设施的规模效应。芯片生产案例的能耗最小，为3.8亿日圆/吨，供应成本最低，为1558亿日圆/千焦耳，二氧化碳减少量最大，为252百万日圆/吨二氧化碳/年；而颗粒生产案例的供应成本和二氧化碳减少量分别为1643日圆/千焦耳和229亿日圆/千焦耳。由于前处理厂分布较广，能源消耗、能源浪费和烘干成本大于运输能源和成本的减少；因此，黑色颗粒箱的供应成本大于芯片和颗粒箱的供应成本。
This paper aims to estimate the costs and CO2emissions of wood biomass co-firing in the Tohoku region of Japan. A woody biomass supply system is designed, which comprises of four processes: collection, resource transportation, preprocessing, and fuel transportation. Preprocessing is further divided into two processes: drying and fuel production. Sawmill residue, construction waste, forest residue, thinning residue, and fruit-tree pruning residue are treated as raw materials. Wood chips, pellets, and torrefied pellets (known as black pellets) are regarded as bio-fuels. The raw-material and bio-fuel transportation pathways are optimized using a geographical information system (GIS). In the Tohoku area, the availability of raw-material is 3.6 PJ/y, and the results indicate that the preprocessing plant locations should be widely distributed in that region, because the resource transportation costs have a significantly greater influence on the costs and emissions than the scale effect of the preprocessing facilities. The chip production case exhibits the smallest energy consumption of 3.8 GJ/t, the lowest supply cost of 1558 JPY/GJ, and the largest CO2reduction of 252 × 103t CO2/y, whereas the pellet production case exhibits a supply cost and CO2reduction of 1643 JPY/GJ and 229 × 103t CO2/y, respectively. The energy consumption, energy waste, and cost of torrefaction are greater than the reductions in the transportation energy and cost due to wider distribution of the preprocessing plants; thus, the black pellet case has a larger supply cost than the chip and pellet cases.