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中小型CFB锅炉炉前给煤设备配风系统如图1所示,主要有给煤口处的播煤风,落煤管处的密封风和给煤设备密封风所组成。为了简化炉前给煤配风系统,其风源主要来自CFB锅炉的一次风或二次风,中小型CFB锅炉配风系统一般不单独设置风机。而中小型CFB锅炉正常运行时,燃烧室处在正压条件下,如果炉前给煤配风系统设计不合理,将会造成大量高温烟气夹带粉尘从炉膛给煤口处向外泄漏,反窜至给煤设备,造成锅炉环境污染,而形成的腐蚀性水气大量积聚在给煤设备内,使给煤设
Small and medium-sized CFB boiler feed coal equipment with air system shown in Figure 1, the main coal to the coal at the mouth of the wind, the coal seam at the seal of wind and coal equipment seal wind formed. In order to simplify the gas distribution system in front of the furnace, the wind source mainly comes from the primary or secondary air of the CFB boiler, and the air distribution system of the small and medium-sized CFB boiler generally does not set the fan separately. In the normal operation of small and medium sized CFB boilers, if the combustion chamber is under positive pressure, if the design of air distribution system in front of the furnace is not reasonable, a large amount of entrained dust from high-temperature flue gas will leak outwards from the coal inlet of the furnace, Channeling to coal equipment, resulting in boiler environmental pollution, and the formation of a large number of corrosive water and gas accumulation in the coal feeding equipment, so that coal