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Techno-economic assessment of biomass slow pyrolysis into different biochar and methanol concepts

机译：生物质缓慢热解为不同生物炭和甲醇概念的技术经济评估

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摘要

Methanol is one of the fuels that are an alternative to petroleum-based liquid transport fuels. This paper assesses the feasibility of co-production of methanol and biochar from thermal treatment of pine in a two-stage process; pyrolysis or gasification to produce biochar and volatiles, and the processing of the volatiles to produce methanol using process data for large-scale conversions based on natural gas. Three concepts were studied: (ⅰ) slow pyrolysis at 300 ℃; (ⅱ) slow pyrolysis at 450 ℃; and (ⅲ) gasification at 800 ℃, all of them followed by processing of the volatiles into syngas and the conversion of the syngas into methanol. Gasification was able to generate methanol at or below current (2012) prices of methanol produced from fossil fuel ($422/t) from a plant size of 100 t/h upwards. Pyrolysis is not competitive without valuing the biochar as a product. Considering both biochar and methanol as marketable products improves the viability of slow pyrolysis concepts. Their profitability is sensitive to the biochar selling price between, with a break-even at a biochar price of about $220/t for the pyrolysis at 300 ℃ and about $280/t for pyrolysis at 450 ℃.
机译：甲醇是石油基液体运输燃料的替代燃料之一。本文评估了松木热处理分两个阶段联合生产甲醇和生物炭的可行性。进行热解或气化以生产生物炭和挥发物，并使用工艺数据对天然气进行大规模转化，从而处理挥发物以生产甲醇。研究了三个概念：（ⅰ）300℃下缓慢热解； （ⅱ）在450℃缓慢热解； （ⅲ）在800℃下气化，然后将所有挥发物加工成合成气，然后将合成气转化为甲醇。气化能够以等于或低于当前（2012年）的化石燃料生产的甲醇价格（$ 422 / t）生产甲醇，工厂规模为100 t / h以上。如果不将生物炭视为产品，则热解没有竞争力。将生物炭和甲醇都视为可销售的产品可改善慢速热解概念的可行性。他们的获利能力对生物炭销售价格敏感，在300℃下热解的盈亏平衡价约为220美元/吨，在450℃下热解的盈亏平衡价约为280美元/吨。

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  • 来源
    《Fuel》 |2014年第ptaa期|742-748|共7页
  • 作者

    Shaka Shabangu; Dominic Woolf; Elizabeth M. Fisher; Largus T. Angenent; Johannes Lehmann;

  • 作者单位

    Slibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, United States,Department of Crop and Soil Sciences, Cornell University, Ithaca, NY 14853, United States;

    Department of Crop and Soil Sciences, Cornell University, Ithaca, NY 14853, United States;

    Slibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, United States;

    Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, United States;

    Department of Crop and Soil Sciences, Cornell University, Ithaca, NY 14853, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Slow pyrolysis; Biochar; Biomass; Methanol; Scale;

    机译：缓慢热解;生物炭生物质甲醇;规模;

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