以粉煤流态化气化工艺为研究对象,根据Box-Behnken的中心组合实验设计原理,在单因素试验的基础上,采用三因素三水平的响应曲面分析法,建立了粉煤流态化气化的二次多项数学模型,并以工艺气中有效组分含量为响应值作响应面和等高线,考察了气化温度、汽/氧比值和入炉煤量对工艺气中有效组分含量的影响.结果表明,粉煤流态化气化的优化工艺条件为:气化温度为955.95℃,汽/氧比值为0.47,入炉煤量为3.03kg/h,此工艺条件下,平均有效组分含量为53.05%.
The research was conducted on the gasification of pulverized coal with the fluidized bed as asifier. On the basis of one-factor tests and accor esign principle, the method of response surface ana lish a second order quadratic equation for the gasif coal. Based on the analysis of the response surface a ding to the Box-Behnken center-united experimental lysis with 3 factors and 3 levels was adopted to estabication process in fluidized bed gasifier of pulverized and contour lines graphed on the response values of the content of valuable constituents, the author examined the influence of the temperature, the ratio of steam to oxygen,and the furnace coal supply on the content of valuable constituents. The obtained results show that the condition for optimum gasification is temperature 955.95℃ ,ratio of steam over oxygen 0. 47,and furnace coal-supply quantity 3.03 kg/h,under which the arerage content of valuable constituents is 53.05%.