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Aspen Plus simulation of biomass integrated gasification combined cycle systems at corn ethanol plants

机译：玉米乙醇厂生物质集成气化联合循环系统的Aspen Plus模拟

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摘要

Biomass integrated gasification combined cycle (BIGCC) systems and natural gas combined ! cycle (NGCC) systems are employed to provide heat and electricity to a 0.19 hm~3 y~1 (50 million gallon per year) corn ethanol plant using different fuels (syrup and corn stover, corn stover alone, and natural gas). Aspen Plus simulations of BIGCC/NGCC systems are performed to study effects of different fuels, gas turbine compression pressure, dryers (steam tube or superheated steam) for biomass fuels and ethanol co-products, and steam tube dryer exhaust treatment methods. The goal is to maximize electricity generation while meeting process heat needs of the plant. At fuel input rates of 110 MW, BIGCC systems with steam tube dryers provide 20-25 MW of power to the grid with system thermal efficiencies (net power generated plus process heat rate divided by fuel input rate) of 69-74%. NGCC systems with steam tube dryers provide 26-30 MW of power to the grid with system thermal efficiencies of 74-78%. BIGCC systems with superheated steam dryers provide 20-22 MW of power to the grid with system thermal efficiencies of 53-56%. The life-cycle greenhouse gas (GHG) emission reduction for conventional corn ethanol compared to gasoline is 39% for process heat with natural gas (grid electricity), 117% for BIGCC with syrup and corn stover fuel, 124% for BIGCC with corn stover fuel, and 93% for NGCC with natural gas fuel. These GHG emission estimates do not include indirect land use change effects.
机译：生物质气化联合循环（BIGCC）系统和天然气联合！循环（NGCC）系统用于使用不同的燃料（糖浆和玉米秸秆，仅玉米秸秆和天然气）为0.19 hm〜3 y〜1（每年5000万加仑）的玉米乙醇工厂提供热量和电力。进行了BIGCC / NGCC系统的Aspen Plus模拟，以研究不同燃料，燃气轮机压缩压力，生物质燃料和乙醇副产品的干燥器（蒸汽管或过热蒸汽）的影响以及蒸汽管干燥器的废气处理方法。目标是在满足工厂过程热量需求的同时最大化发电量。在110 MW的燃料输入速率下，带有蒸汽管式干燥器的BIGCC系统向电网提供20-25 MW的电力，系统热效率（净发电量加上过程热量除以燃料输入率）为69-74％。带有蒸汽管干燥器的NGCC系统为电网提供26-30 MW的电力，系统热效率为74-78％。具有过热蒸汽干燥器的BIGCC系统为电网提供20-22 MW的电力，系统热效率为53-56％。与汽油相比，常规玉米乙醇的生命周期温室气体（GHG）排放降低了39％（使用天然气（电网）的过程热），糖浆和玉米秸秆燃料的BIGCC降低了117％，玉米秸秆燃料的BIGCC降低了124％燃料，天然气天然气的93％。这些温室气体排放估算不包括间接土地利用变化的影响。

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  • 来源
    《Biomass & bioenergy》 |2013年第9期|197-210|共14页
  • 作者

    Huixiao Zheng; Nalladurai Kaliyan; R. Vance Morey;

  • 作者单位

    Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55108, USA;

    Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55108, USA;

    Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55108, USA;

  • 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

    Aspen Plus simulation; BIGCC; Corn ethanol; Corn stover; Greenhouse gas emissions; Steam tube dryer;

    机译：Aspen Plus模拟;BIGCC;玉米乙醇;玉米秸秆;温室气体排放;蒸汽管烘干机;

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