煤质的质量对于电蒸汽锅炉的使用寿命是很有影响的，煤炭的硬性指标是煤的热经济性，还要考虑到煤质对于锅炉燃烧设备的结构、选型、受热面的布置以及运行的经济性和可靠性因素。
Coal quality for the life of electric steam boilers are very influential, hard targets coal thermal coal economy, also taking into account the structure of the boiler combustion equipment for coal quality, selection, arrangement and operation of the heating surface the economy and reliability factors.
电蒸汽锅炉http://www.jnshengxin.cn/在大量使用锅炉的厂房中为了降低燃烧成本要求选用低挥发分煤炭的锅炉，燃用高挥发分的煤炭，其安全性和经济性将受到较大影响;煤质燃烧后的灰分同样也是考虑的重点，灰分高会使火焰传播速度减慢，燃点推迟，燃烧温度下降，燃烧稳定性变差，甚至造成灭火;同时灰分过高，还容易加剧设备的磨损，缩短设备使用寿命。灰分过低，在层状燃烧时，由于灰渣太薄容易把炉箅烧坏。从灰分的适应性看，循环流化床锅炉对灰分适应性最强。
In the extensive use of the boiler plant in order to reduce the cost of combustion requires selection of low volatile coal boilers burning high volatile coal, its safety and economy will be severely affected; Coal ash after combustion is also considered focus ash high flame propagation speed will slow down, delayed ignition, combustion temperature drops, the combustion stability deteriorates, causing the fire; at the same time the high ash content, but also easy to increased wear and tear of equipment, shorten equipment life. Ash is too low, when stratified combustion,due to the ash grate is easy to burn out too thin. From the ashes of the adaptability, the circulating fluidized bed boiler ash on the most adaptable.
电蒸汽锅炉http://www.jnshengxin.cn/除了看煤炭的挥发性和灰分外还要注意水分、发热量以及排渣方式。煤炭的水分升高，发热量降低，锅炉排烟温度升高，影响发电锅炉的燃烧效率，煤炭在使用之前要进行干燥处理和去硫处理，以免影响煤燃烧的热效率和污染空气。煤的发热量要结合锅炉的设计，过高或过低都不是太好的，要选择合适的煤炭发热量。悬浮燃烧采用液态排渣方式，一般使用灰熔融性偏低的煤。
Besides watching volatile coal and ash also pay attention to the outside moisture, heat and slagging mode. Coal moisture increases, reduce heat, the boiler flue gas temperature, the influence of the boiler combustion efficiency power generation, coal should be dried before use and to sulfur treatment, to avoid affecting the thermal efficiency of coal combustion and air pollution.Calorific value of coal in conjunction with boiler design, high or low is not very good, and to select the appropriate calorific value of coal. Suspension using slagging combustion mode, the general use of coal ash fusion low.
