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Highly efficient electricity generation from biomass by integration and hybridization with combined cycle gas turbine (CCGT) plants for natural gas

机译：通过与联合循环燃气轮机（CCGT）电厂进行整合和杂交，从生物质高效发电

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摘要

Integration/co-firing with existing fossil fuel plants could give near term highly efficient and low cost power production from biomass. This paper presents a techno-economical analysis on options for integrating biomass thermal conversion (optimized for local resources ～50 MW_(th)) with existing CCGT (combined cycle gas turbine) power plants (800-1400 MW_(th)). Options include hybrid combined cycles (HCC), indirect gasification of biomass and simple cycle biomass steam plants which are simulated using the software Ebsilon Professional and Aspen Plus. Levelized cost of electricity (LCoE) is calculated with cost functions derived from power plant data. Results show that the integrated HCC configurations (fully-fired) show a significantly higher efficiency (40-41%, LHV (lower heating value)) than a stand-alone steam plant (35.5%); roughly half of the efficiency (2.4% points) is due to more efficient fuel drying. Because of higher investment costs, HCC options have cost advantages over stand-alone options at high biomass fuel prices (>25 EUR/MWh) or low discount rates (<5%). Gasification options show even higher efficiency (46-50%), and the lowest LCoE for the options studied for fuel costs exceeding 10 EUR/MWh. It can be concluded that clear efficiency improvements and possible cost reductions can be reached by integration of biomass with CCGT power plants compared to stand-alone plants.
机译：与现有化石燃料厂的集成/共燃可在短期内利用生物质提供高效，低成本的电力生产。本文介绍了将生物质热转化（针对当地资源优化至50 MW_th）与现有CCGT（联合循环燃气轮机）电厂（800-1400 MW_th）进行整合的方案的技术经济分析。选项包括混合联合循环（HCC），生物质间接气化和简单循环生物质蒸汽发电厂，这些发电厂使用软件Ebsilon Professional和Aspen Plus进行模拟。使用从电厂数据得出的成本函数来计算平均电费（LCoE）。结果表明，与单独的蒸汽发电厂（35.5％）相比，集成的HCC配置（完全燃烧）显示出明显更高的效率（40-41％，LHV（较低的热值））；大约一半的效率（2.4％点）归因于更有效的燃料干燥。由于较高的投资成本，在生物质燃料价格高（> 25 EUR / MWh）或折现率低（<5％）时，HCC选件比独立选件具有成本优势。气化选件的效率更高（46-50％），对于燃料成本超过10欧元/兆瓦时的选件，LCoE最低。可以得出结论，与独立电厂相比，通过将生物质与CCGT电厂整合，可以明显提高效率并降低成本。

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  • 来源
    《Energy》 |2010年第10期|p.4042-4052|共11页
  • 作者

    Erik Pihl; Stefan Heyne; Henrik Thunman; Filip Johnsson;

  • 作者单位

    Department of Energy and Environment, Energy Technology, Chalmers University of Technology, S-412 96 Cdteborg, Sweden;

    rnDepartment of Energy and Environment, Heat and Power Technology, Chalmers University of Technology, S-412 96 Goeteborg, Sweden;

    rnDepartment of Energy and Environment, Energy Technology, Chalmers University of Technology, S-412 96 Cdteborg, Sweden;

    rnDepartment of Energy and Environment, Energy Technology, Chalmers University of Technology, S-412 96 Cdteborg, Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    biomass; hybrid combined cycles; gasification; modeling; integration;

    机译：生物质混合联合循环;气化;造型;积分;

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