• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Thermal engineering >Study of flame combustion of off-design binary coal blends in steam boilers
【24h】

Study of flame combustion of off-design binary coal blends in steam boilers

机译：不良设计的二元混煤在蒸汽锅炉中的火焰燃烧研究

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

Changes in the structure of the fuel consumption by the thermal power stations of Ukraine caused by failure in supplying anthracite from the Donets Basin are analyzed and the major tasks of maintaining the functioning of the coal industry are formulated. The possibility of using, in the near future, the flame combustion of off-design solid fuels in the power boilers of the thermal power plants and combined heat and power plants is studied. The article presents results of expert tests of the TPP-210A and TP-15 boilers under flame combustion of mixtures of anthracites, lean coal, and the coal from the RSA in various combinations. When combusting, such mixtures have higher values of the combustibles yield and the ash fusibility temperature. The existence of the synergetic effect in the flame combustion of binary coal blends with different degrees of metamorphism is discussed. A number of top-priority measures have been worked out that allow for switching over the boilers designed to be fired with anthracite to using blends of coals of different ranks. Zoned thermal analysis of the TP-15 boiler furnace was performed for numerical investigation of the temperature distribution between the furnace chamber zones and exploration of the possibility of the liquid slag disposal and the temperature conditions for realization of this process. A positive result was achieved by combusting anthracite culm (AC), the coal from the RSA, and their mixtures with lean coal within the entire range of the working loads of the boilers in question. The problems of normalization of the liquid slag flow were also successfully solved without closing the slag notch. The results obtained by balance experiments suggest that the characteristics of the flame combustion of a binary blend, i.e., the temperature conditions in the furnace, the support flame values, and the degree of the fuel burnout, are similar to the characteristics of the flame of the coal with a higher reactive capacity, which proves the existence of the synergetic effect in the processes of cocombustion of coals of various grades.
机译：分析了顿涅茨盆地无烟煤供应失败造成的乌克兰火力发电厂燃料消耗结构的变化，并提出了维持煤炭工业运行的主要任务。研究了在不久的将来在火力发电厂和热电联产电厂的锅炉中使用非设计固体燃料进行火焰燃烧的可能性。本文介绍了在无烟煤，贫煤和来自RSA的各种组合煤的火焰燃烧下，TPP-210A和TP-15锅炉的专家测试结果。当燃烧时，这样的混合物具有更高的可燃物产率和灰烬可熔温度值。讨论了不同变质程度的二元煤混合物在火焰燃烧中协同作用的存在。已经制定了许多最优先的措施，这些措施允许将设计为用无烟煤燃烧的锅炉转换为使用不同等级的煤的混合物。进行了TP-15锅炉炉膛的分区热分析，以对炉膛区域之间的温度分布进行数值研究，并探索处理液渣的可能性和实现此过程的温度条件。通过在所涉及锅炉的整个工作负荷范围内燃烧无烟煤茎秆，来自RSA的煤以及它们与贫煤的混合物，取得了积极的成果。在不关闭渣口的情况下，也成功解决了液态渣流归一化问题。通过平衡实验获得的结果表明，二元混合物的火焰燃烧特性，即炉内的温度条件，支撑火焰值和燃料的燃尽程度，与二元混合物的火焰特性相似。具有较高反应活性的煤，证明了各种等级煤共燃过程中存在协同作用。

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