...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Using an oxygen-carrier as bed material for combustion of biomass in a 12-MWth circulating fluidized-bed boiler
【24h】

Using an oxygen-carrier as bed material for combustion of biomass in a 12-MWth circulating fluidized-bed boiler

机译：在12 MWth循环流化床锅炉中使用氧气载体作为床层材料燃烧生物质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The initial experiences of using an oxygen-carrying metal oxide, ilmenite, in the 12-MWth circulating flu-idized bed (CFB) boiler/gasifier system at Chalmers University of Technology are presented. The rationale for the addition of ilmenite to the solids inventory is that ilmenite has the ability to alternately take up and release oxygen, and thereby improve the distribution of oxygen throughout the furnace. As a consequence, less air is needed to maintain low emissions from carbon monoxide (CO) and unreacted hydrocarbons (HC) during the combustion of volatile-rich fuels, such as biomass. One of the conducted experiments involved only the boiler, and the reference case corresponded to operation solely with silica-sand as the bed material, while in an additional three cases, ilmenite in various amounts was added to make up to 40 wt.% of the total bed inventory. During the experiments, the concentrations of CO and nitric oxide (NO) in the convection path of the boiler were measured. The addition of ilmenite to the silica-sand decreased the concentrations of CO and NO by 80% and 30%, respectively. Additional experiments were performed in which a concentrated stream of raw gas produced in the indirect gasifier was injected into the freeboard of the boiler. In one experiment, only silica-sand was used, while 12 wt.% ilmenite was added to the bed material in a separate experiment. The concentrations of CO and HC were measured at three different heights in the boiler and at nine positions over a cross-section of the furnace. The concentrations of CO and total HC in the furnace cross-section during concomitant gasification operation were reduced by the addition of ilmenite.
机译：介绍了查尔默斯理工大学在12兆瓦时循环流化床（CFB）锅炉/气化炉系统中使用载氧金属氧化物钛铁矿的初步经验。将钛铁矿添加到固体物料中的基本原理是钛铁矿具有交替吸收和释放氧气的能力，从而改善了整个炉子中氧气的分布。结果，在富含挥发性的燃料例如生物质的燃烧过程中，需要较少的空气来保持一氧化碳（CO）和未反应的碳氢化合物（HC）的低排放。进行的实验之一仅涉及锅炉，而参考案例仅对应于使用硅砂作为床层材料的操作，而在另外三种情况下，添加了各种数量的钛铁矿，最多占锅炉的40 wt。％。总床库存。在实验过程中，测量了锅炉对流路径中的CO和一氧化氮（NO）浓度。在硅砂中添加钛铁矿可使CO和NO的浓度分别降低80％和30％。进行了另外的实验，其中在间接气化炉中产生的浓原料气流被注入锅炉的干舷。在一个实验中，仅使用硅砂，而在另一实验中，将12重量％的钛铁矿添加到床材料中。在锅炉中三个不同的高度以及炉子横截面上的九个位置测量了CO和HC的浓度。伴随气化操作，通过添加钛铁矿降低了炉膛横截面中的CO和总HC浓度。

著录项

  • 来源
    《Fuel》 |2013年第11期|300-309|共10页
  • 作者

    Henrik Thunman; Fredrik Lind; Claes Breitholtz; Nicolas Berguerand; Martin Seemann;

  • 作者单位

    Department of Energy and Environment, Division of Energy Technology, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;

    Department of Energy and Environment, Division of Energy Technology, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;

    Metso Power AB, PO Box 8734, SE-402 75 Gothenburg, Sweden;

    Department of Energy and Environment, Division of Energy Technology, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;

    Department of Energy and Environment, Division of Energy Technology, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;

  • 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

    Biomass combustion; Oxygen carriers; Combustion emissions; Fluidized bed; Mass transfer issues;

    机译：生物质燃烧氧气载体;燃烧排放;流化床传质问题;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号