一、概述以薄煤层燃烧的旧式煤炉,由于存在炉温波动大、加热速度慢、空气过剩系数大、燃耗量高、劳动强度大等缺点,已不适应当前节能形势的要求。为了执行我国的能源政策,对旧式煤炉进行技术改造很有必要。目前许多工厂和设计院都在寻求改造的途径,就国内情况看,大致有三种发展趋势。 I. Overview Old coal-fired furnaces burned with thin coal seam have not met the requirements of current energy-saving situation because of the disadvantages of large furnace temperature fluctuation, slow heating speed, large air surplus coefficient, high fuel consumption and labor intensity. In order to implement our country’s energy policy, it is necessary to carry out technological transformation on the old coal stove. At present, many factories and design institutes are seeking ways to transform. According to the domestic situation, there are basically three kinds of development trends.