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Integration of biogas plants in the building materials industry

机译：沼气厂与建材行业的整合

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摘要

The paper quantifies the synergy-effects of an areal combination of biogas-plants with plants of the building materials industry (e.g. cement works) from the energetic and economical point of view. Therefore an overall process model based on energy and mass flow balances is developed to determine the effects of a combination of both plants in terms of energetic efficiency, investment and operating costs, greenhouse gas emission reduction and overall energy production costs. The results and the calculation procedure for a combination of biogas plants with cement works are presented in detail. The main benefits of this combination are the utilisation of low temperature excess heat sources from cement works for fermenter heating and the direct thermal utilisation of unprocessed biogas as a valuable, CO_2-neutral fuel for combustion processes for instance clinker burning. Due to the combination, the energetic efficiency of the biogas plant, defined as utilisable energy output in relation to the energy content of the produced biogas, significantly increases from 63.0％ to 83.8％. Concurrently the energy production costs are reduced, turning biogas into a competitive source of energy without the need for federal sponsorship. Calculations show, that production costs in combined plants for plant sizes larger than 90 m~3_(sTp)/h biogas are even lower than the actual market prize of natural gas.
机译：本文从精力充沛和经济的角度量化了沼气厂与建材行业工厂（例如水泥厂）的区域组合的协同效应。因此，开发了一种基于能量和质量流量平衡的总体过程模型，以确定两种工厂在能源效率，投资和运营成本，温室气体减排和总体能源生产成本方面的影响。详细介绍了沼气厂与水泥厂结合的结果和计算程序。这种结合的主要好处是利用水泥厂的低温多余热源进行发酵罐加热，以及将未经处理的沼气直接热利用，将其作为有价值的，CO_2中性燃料用于燃烧过程，例如熟料燃烧。由于这种结合，沼气厂的能效（从产生的沼气的能量含量来看可利用的能量输出）从63.0％显着提高到83.8％。同时，降低了能源生产成本，将沼气变成了竞争性能源，而无需联邦政府的赞助。计算表明，联合工厂中大于90 m〜3_（sTp）/ h沼气的生产成本甚至低于实际的天然气市场价格。

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  • 来源
    《Renewable energy》 |2014年第1期|125-131|共7页
  • 作者

    Markus Ellersdorfer; Christian Weiss;

  • 作者单位

    Institute of Process Technology and Industrial Environmental Protection, University of Leoben, Franz-Josef-Strasse 18. 8700 Leoben, Austria;

    Institute of Process Technology and Industrial Environmental Protection, University of Leoben, Franz-Josef-Strasse 18. 8700 Leoben, Austria;

  • 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

    Biogas; Cement works; Thermal utilisation; Excess heat recovery;

    机译：沼气水泥工程;热利用;余热回收;

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