煤燃烧过程中SO_2、NO的逸出规律研究

STUDY ON EMISSION OF SO_2 AND NO DURING COAL COMBUSTION

研究了脱灰煤、负载ＦｅＣｌ３煤及几种不同变质程度的原煤在程序升温燃烧过程中ＳＯ２、ＮＯ的逸出规律。结果表明：ＦｅＣｌ３对煤中某些类型有机硫的逸出有抑制作用，同时使ＮＯ的逸出总量大大降低；不同升温速率对ＳＯ２、ＮＯ的逸出峰型基本没有影响，但低的升温速率下ＳＯ２、ＮＯ能够在较低的温度下逸出。

Demineralized lignite (DML), DML with FeCl 3 loading and coals with different ranks were used to study the emission of SO 2 and NO during coal combustion performed in a fixed bed combustion reactor Some unique features of SO 2 and NO emission were observed and some trends about the occurrence of sulfur, nitrogen in correlation with their chemical forms were discussed in detail Under temperature programmed combustion conditions, the presence of two main peaks in SO 2 and NO profiles suggests that there are two SO 2 and NO sources with different reactivities in coals Organic sulfur and volatile nitrogen were first released, then the inorganic sulfur and fixed nitrogen NO good correlation between the quantity of No emission and nitrogen content in coals was found due to the catalytic reduction of part of NO by mineral matter