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一、掺灰与不掺灰的对比我厂是一个小型火力发电厂,有两台35T/H 机播抛煤链条炉。燃用主要煤种:天河煤。挥发份 V 18～20%;低位发热量 Q~(r_p)占3500～4000大卡/公斤;灰份 A~Y 在35～48%。每天耗煤量约300吨,由水膜除尘排出飞灰约35t(干灰)。飞灰可燃物25～45%,实测发热量1500～2200大卡/公斤。为改善环境及飞灰再利用,我们把沉灰池的飞灰取出后掺在煤中送入炉内进行再燃,经过多次试验取得如下结果。
First, the gray and non-doped gray contrast I plant is a small thermal power plant, there are two 35T / H machine broadcast smelting chain furnace. Burning with the main types of coal: Tianhe coal. Volatile V 18 ~ 20%; low calorific value Q ~ (r_p) accounted for 3500 ~ 4000 kcal / kg; ash A ~ Y in 35 ~ 48%. About 300 tons of coal consumption per day, from the water film dust fly ash discharge of about 35t (dry ash). Fly ash combustible material 25 ~ 45%, the measured heat 1500 ~ 2200 kcal / kg. In order to improve the environment and recycling of fly ash, we took out the fly ash of the sedimentation tank and mixed it with coal and sent it to the furnace for reburning. After several tests, the following results were obtained.