【摘要】 气化细渣热值低、水分高，难以独立稳定燃烧，因此通常将其和热值较高的燃料进行掺混实现燃烧利用。为研究气化细渣和煤掺烧过程中NO_x和SO₂的排放特性，利用管式炉燃烧污染物测试系统，在空气气氛下，使用不同比例的气化细渣和烟煤进行掺烧实验，对燃烧污染物的释放量进行实时监测，并计算燃烧污染物的释放总量。通过实验发现：温度是影响NO_x、SO₂排放量的重要因素，在高温工况下，NO、SO₂的释放量显著提高，NO₂、N₂O的释放量显著降低。燃料中挥发分的含量与NO₂、N₂O的释放量有着密切关系，煤中挥发分含量较高，NO₂、N₂O的释放量也相对较高。整体NO₂、N₂O的释放量远小于NO的释放量，NO_x排放以NO为主。随气化细渣掺烧比例增大，NO、SO₂释放量降低。因此，通过与煤掺烧可以实现气化细渣的稳定低污染燃烧。更多还原

【Abstract】 Fine gasification slag has low calorific value and high moisture content, which makes it difficult to burn independently and stably.Therefore, it is usually blended with fuels of higher calorific value to achieve combustion utilization. In order to study the emission characteristics of NO_x and SO₂ from co-firing of fine gasification slag and coal, in this paper, a tube furnace combustion pollutant test system was used to conduct co-combustion experiments firing fine gasification slag and coal of different ratios under air atmosphere, while the release of combustion pollutants were monitored in real-time and the total release was calculated. The experiment demonstrates that temperature is an important factor affecting NO_x and SO₂ emissions. At high temperature, the release of NO and SO₂ is significantly increased and the release of NO₂ and N₂O is significantly reduced. The content of volatile matter in fuel has a close relationship with NO₂ and N₂O release. Coal has higher volatile matter, so the release of NO₂ and N₂O is relatively high. The overall release of NO₂ and N₂O is much smaller than that of NO. The main NO_x emission is NO. With the increase of the proportion of fine gasification slag, the release amount of NO and SO₂ decreases. Therefore, fine gasification slag co-firing with coal can achieve stable and low-pollution combustion.更多还原