一、引言锅炉是糖厂的主要动力设备,锅炉的状况直接影响全厂的生产和效益。由于糖厂锅炉燃料及用汽的特点,使其燃烧系统具有一定的特殊性,因而这类锅炉的汽压/燃料回路不易控制。糖厂锅炉燃烧及用汽具有以下特点: ①这种锅炉使用两种燃料(蔗渣、煤),其燃烧值相差甚远,具有单烧渣、煤渣混烧、单烧煤三种状态。此外,作为主燃料的蔗渣来源受压榨的影响,使得燃料来源极不稳定。②煤和渣的燃烧方式不同,可燃烧的时间常数也相差很大,此外还有两者混烧状态,这就带来 First, the introduction Boiler is the main power plant sugar, boiler conditions directly affect the whole plant’s production and efficiency. Due to the characteristics of sugar-fired boiler fuel and steam, the combustion system has some particularities, so the steam pressure / fuel circuit of such boilers is not easy to control. There are the following characteristics of sugar factory boiler combustion and gas use: ①This boiler uses two kinds of fuel (bagasse, coal), which have a far cryogenic value. It has three states of single slag, coal slag mixed burning and single coal burning. In addition, the source of bagasse, which is the main fuel, is affected by the squeezing so that the fuel source is extremely unstable. ② coal and slag combustion in different ways, the burning time constant is also a big difference, in addition there are two mixed state, which brings