一种振动流化床式煤调湿工艺的半工业化试验

摘要

以新开发的一套振动流化床式煤调湿半工业化试验装置为研究对象,考察了这种煤调湿工艺的可行性,以焦炉烟道废气作为煤粉干燥介质,研究了烟气用量、烟气初始温度、煤粉下料速度和煤粉初始湿度对煤调湿结果的影响,得到了这种煤调湿工艺运行的控制参数.结果表明:当烟气用量为1200m3/h,烟气初始温度在220℃以上,煤粉下料速度在600kg/h,煤粉初始湿度在9％～12％之间,得到上、下筛出口的煤粉的湿度在5％～7％范围,能够满足焦化对煤粉湿度的要求.%The research focused on a new designed semi - industrial equipment of a vibration fluidized type coal moisture control (CMC) in order to verify its feasibility. The waste gas from the coke oven flue was used for coal drying. The influences of the gas consumption,the gas initial - temperature,the coal blanking speed and coal initial - humidity on coal drying results were investigated,respectively. Then the control parameters of this process can be gotten through this test. The results showed that the coal humidity from the upper/lower exports could decrease to 5% -7% after coal moisture control on the conditions of fuel gas consumption 1200mVh,flue gas initial - temperature 220℃,the coal blanking speed 600kg/h and initial coal humidity 9% ~ 12%. It can satisfy the coal humidity requirements of coke produce.