石油焦燃烧过程中NO_x和SO_2析出规律的研究

On the Emission of NO_x and SO_2 during Petroleum Coke

在卧式加热炉和富氧条件下，对石油焦在燃烧过程中的ＮＯｘ 和ＳＯ２ 析出规律进行研究，发现石油焦的ＮＯｘ 和ＳＯ２ 析出受多种因素的影响：温度增加，ＮＯｘ 的析出量增加；颗粒粒径增加，ＮＯｘ 和ＳＯ２ 的析出量减少；石灰石微量增加，ＮＯｘ 的浓度降低，石灰石过量增加，ＮＯｘ 的浓度反而升高，石灰石的增加使ＳＯ２ 降低；ＮＯｘ 的析出并不与Ｎ 的质量分数成正比，ＳＯ２ 的析出与Ｓ的质量分数成正比．结合这些实验现象，从机理上对它们进行解析．

The emission principle of NO x and SO 2 during petroleum coke combustion under superabundant concentration of O 2 in a horizontal heating furnace is studied. The experimental results indicate that there are many factors affecting the emission of NO x and SO 2. The increase of temperature increases the emission of NO x but not that of SO 2, the increasing of particle diameter decreases both NO x and SO 2 emission; a little increase of the amount of limestone decreases the concentration of NO x , but excessive increase of limestone increases it instead; The increase of limestone amount decreases, however, the emission of SO 2; and the emission of NO x is not proportional to nitrogen content, but that of SO 2 is proportional of sulphur content. The mechanisms all these phenomena found during the tests are discussed.