• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Investigating the effect of substituting fractions of imported coals with coke oven tar on coke quality: pilot plant study
【2h】

Investigating the effect of substituting fractions of imported coals with coke oven tar on coke quality: pilot plant study

机译：研究用焦炉焦油代替进口煤馏分对焦炭质量的影响：中试工厂研究

页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this study, coke oven tar addition over a range of 0 – 8 wt.% was evaluated as a possibleudsubstitute for imported coals fractions. Coke oven tar used was collected from coke oven taruddecanters of the by-products section of the coke making plant. Moisture content in coke ovenudtar varied depending on the residence time and water carryover from coke oven tar separatorsudto storage tanks. Therefore, various moisture ranges were considered in order to observe itsudeffect on coal blend, carbonization and coke properties. The optimum moisture content inudcoke oven tar was found to be 3% with a coke oven tar addition of 6 wt.% in the coal blend.udAt the same coke oven tar addition of 6 wt.% in the coal blend but with 6% moisture contentudin coke oven tar, coke properties improved, coke yield showed up to 4% decrease. On theudother hand, with 1% moisture content in coke oven tar of 6 wt.% in the coal blend, cokeudyield increased by 1% and low coke properties such as I40 of 42.9 and Stability of 50.3 wereudachieved. The latter process was characterized by excessive increased in wall pressure andudpushing energy. Both wall pressure and pushing energy increase are less desirable due toudtheir detrimental effect on the physical condition of the oven walls. Furthermore, addition ofudcoke oven tar with 1% moisture content to coal blend can be prohibited by its high viscosity.udAt 3% moisture content in coke oven tar addition of 6 wt.% in the coal blend, coke propertiesudimproved. When the amount of coke oven tar was increased to 8 wt.% at the optimum cokeudoven addition, coke yield was not affected but low CSR of 57.8 against a target of ³60 wasudachieved as opposed to CSR of 65.4 at 6 wt.%. Also, coke stability of 52.2 at 8 wt.% asudopposed to 56.1 at 6 wt.% was achieved. Moreover, the highest I40 of 50.9 was achieved at 6udwt.% whereas with 8 wt.% coke oven tar, I40 of 47.9 was achieved. However, up to 2%uddecrease in coke yield was observed. Despite this 2% decrease in coke yield, coke oven tarudaddition is a positive and viable option based upon economic factors (i.e. this reduces theudquantity and cost of imported coals and still achieves improved coke quality which result inudimproved blast furnace operation and better hot metal quality).
机译：在这项研究中，评估了焦炉焦油添加量在0 – 8 wt。％的范围内，可能替代进口煤馏分。所用的焦炉焦油是从炼焦厂副产品部分的焦炉焦油/倾析器中收集的。焦炉 udtar中的水分含量随停留时间和焦炉焦油分离器 udt储罐中水的残留量而变化。因此，考虑各种水分含量以观察其对煤掺和，碳化和焦炭性能的影响。在焦煤焦油中添加6 wt。％的煤后，焦炭焦油中的最佳水分含量为3％。 ud在焦炭焦油中添加6 wt。％的焦炭焦油中，水分含量为6％ udin焦炉焦油，焦炭性能得到改善，焦炭收率最高下降了4％。另一方面，在煤混合物中焦炉焦油中1％的水分含量为6 wt。％时，焦炭产率提高了1％，低焦炭性能（如I40为42.9和稳定性为50.3）得以实现。后一过程的特征在于壁压力和压出能量过度增加。由于壁压力和推动能量的增加对烤箱壁的物理状况的不利影响，因此壁压力和推动能量的增加都是不理想的。此外，由于其高粘度，可以禁止向煤混合料中添加水分含量为1％的焦炉焦油。在混合煤中添加6 wt。％的焦炉焦油中水分含量为3％时，焦炭性能得到改善。当在最佳焦炭加入量下焦炉焦油量增加到8 wt。％时，焦炭收率没有受到影响，但是实现了57.8的低CSR（目标为60），而6 wt。％的CSR为65.4。 ％。同样，获得了8重量％的52.2的焦炭稳定性与6重量％的56.1的焦炭稳定性。此外，在6％（重量）下获得最高的I40为50.9，而在焦炭焦油焦油含量为8％（重量）下，达到了47.9的I40。但是，观察到焦炭收率最多降低了2％。尽管焦炭产量下降了2％，但基于经济因素，焦炉焦油的添加还是一个积极可行的选择（即，这会降低进口煤的数量和成本，并且仍会提高焦炭质量，从而导致高炉运行的改善以及更好的铁水质量）。

著录项

  • 作者

    Makgato Seshibe Stanford;

  • 作者单位
  • 年度 2015
  • 总页数
  • 原文格式 PDF
  • 正文语种 en
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利

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