...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >Biodesulphurization as a complement to the physical cleaning of coal
【24h】

Biodesulphurization as a complement to the physical cleaning of coal

机译：生物脱硫作为煤物理净化的补充

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

Physical and biological processes have been combined with a view to reduce the sulphur and ash content of finely ground coal. The coal used was a semianthracite from the North Spain Coal Field. A sample of several kg in a coal/water suspension with a w/w concentration of 15% was subjected to a physical treatment combining cyclone and flotation separation processes. Representative samples were taken from each of five size fractions: original feed and the physical separation products, which were screened through water into sub-samples classified by particle size. Each fraction from the physical separation and the screening was analysed for ash and sulphur. The elimination yield of the hydrocyclone was 22% of ash and 21 % of sulphur. The figure for ash raised to 41 % when the hydrocyclone and flotation equipment were both used, with no change in sulphur elimination. In turn, the biodesulphurization treatment applied in addition to the two processes raised the respective yields to 59 and 42%. The change in the calorific value of the coal was hardly significant, while sulphur emissions, expressed as g S/GJ were reduced by 51%. Additionally, an assessment was made of the thermal behaviour of the various samples from the physical and biological treatment by means of programmed temperature combustion analysis carried out by a thermogravimetric equipment.
机译：为了减少细磨煤的硫和灰分含量，已将物理和生物过程结合在一起。所使用的煤是西班牙北部煤田的半无烟煤。将煤/水悬浮液中w / w浓度为15％的几公斤样品进行物理处理，将旋风分离器和浮选分离过程相结合。从五个尺寸部分的每一个中获取代表性样品：原始进料和物理分离产物，将其通过水筛选成按粒度分类的子样品。对来自物理分离和筛选的每个馏分进行灰分和硫含量分析。水力旋流器的消除产率是灰分的22％和硫的21％。当同时使用水力旋流器和浮选设备时，灰分的数字提高到41％，而硫的去除没有变化。继而，除了这两个过程之外，还进行了生物脱硫处理，使各自的收率提高到59％和42％。煤的热值变化几乎不显着，而以g S / GJ表示的硫排放减少了51％。另外，通过由热重设备进行的程序升温燃烧分析，对来自物理和生物处理的各种样品的热行为进行了评估。

著录项

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