竹柳颗粒燃料燃烧性能实验研究  

Experimental Study on the Combustion Performance of Bamboo-willow Pellet Fuel

作　　者：刘沙沙[1] 张健 马楠 孙军[1] 

机构地区：[1]南京林业大学 [2]Yanjiang Institute of Agricultural Sciences of Jiangsu,Nantong 226541,China [3]Nanjing Technical Vocational College,Nanjing 210019,China

出　　处：《林产工业》2017年第7期40-43,共4页China Forest Products Industry

摘　　要：采用生物质燃烧速率测定仪模拟竹柳颗粒燃料在层燃锅炉中的实际燃烧过程,用正交试验法设计试验条件,试验的压缩比分别选取4、4.5、5,过量空气系数分别选取1.1、1.3、1.5,炉膛温度分别选取800、900、1 000℃,对竹柳颗粒燃料的燃烧性能进行试验研究,为竹柳颗粒的能源化利用提供基础。结果表明:影响相对燃烧速率的主要因素为炉膛温度,9组试验的速率均维持在0.34g/min左右,燃烧主要集中在前5 min进行,平均相对燃烧速率在90%左右,随后绝对燃烧速率大幅下降,表现为不耐烧;竹柳颗粒的灰熔点在1 360℃以下,略低于烟煤;竹柳颗粒不适宜单独燃烧,在锅炉中燃烧时有结渣的可能性,炉膛出口的烟气温度控制在1 250℃以下为宜。燃用挥发分含量高的烟煤锅炉设备,原则上更适合燃用竹柳颗粒燃料。The biomass determination instrument was used to simulate the combustion characteristics of fuel in the burner from the angle of combustion rate. Using orthogonal test method to design the test conditions, the compression ratio was selected for 4, 4.5, 5, the excess air coefficient was selected for 1.1, 1.3, 1.5 and the furnace temperature was selected at 800, 900, 1 000 ℃. The combustion performance of bamboo-willow pellet fuel was studied experimentally, which provided the basis for the energy utilization of bamboo-willow pellet. Test results show that the main factor affecting the relative burning rate was furnace temperature. The rate of the nine experimental groups were maintained at about 0.34 g/min, the combustion was mainly concentrated in the first 5 minutes and the average relative burning rate at around 90%, then the absolute burning rate fell sharply, and the combustion duration was shorter. Bamboo-willow pellet fuel of ash melting point below 1 360℃, that is slightly lower than bituminous coal. Bamboo-willow pellets are not suitable for separate combustion alone, there is the possibility of slagging in the boiler when burning and the flue gas temperature of furnace outlet is controlled below 1 250℃. It＇s more suitable for high content of volatile bituminous coal boiler equipment to burn bamboowillow pellet fuel.

关 键 词：竹柳颗粒燃料 燃烧性能 燃烧速率 灰熔点 

分 类 号：TK16[动力工程及工程热物理—热能工程] S792[农业科学—林木遗传育种]