Coal Fired Boiler For Paper Making
When fully completed by the end of 2017 urban 10 tons of steam / 10-20 tons of steam coal fired boiler for paper making regulation task and gas pipeline network coverage of the coal / coal-fired boiler renovation work, fully completed before the end of 2018, 20 tons of steam urban / when more than 35 tons of steam / h coal-fired boilers and renovation work. Before the end of 2017, high-pollution fuel combustion zone ban all types of urban areas in high-pollution fuel boiler to stop using all, or switching to natural gas, liquefied petroleum gas, electricity and other clean energy.
To help businesses to reduce costs to switch to clean energy, the program presents a series of supporting policies and measures, establish clear criteria subsidies, subsidies for the 2017,2018 two years time.
BOILERS deposited combustible material, such as carbon black, oils idle, coal, etc., it is mainly due to incomplete combustion of the tail into the coal fired boiler for paper making. Especially when the ignition and shutdown, most likely to cause incomplete combustion, the rear of the boiler deposited a large amount of combustible material. These deposits reduce the heat transfer surface of the tail heating the exhaust gas temperature rises. When the exhaust gas temperature rises to a certain value, there is sufficient oxygen combustion condition occurs at the secondary combustion, secondary combustion is in the shutdown some minutes or hours after the occurrence, which is the ignition point of combustible material and heat conditions. Running faster flow of the flue boiler, heat of the combustible substances produced smoke away quickly, only a slow oxidative, ignition combustion can not be achieved. After the shutdown, the gas flue, the flow is stopped, the heat generated by the oxidation of combustible material not easily lost, the temperature will rise. If the door or flue damper closed tightly, leakage into the fresh air for combustion, causing secondary combustion after shutdown.
The need for paper industry paper industry conversion of coal-fired coal fired boiler for paper makings to gas boiler is a boiler equipment industry needs is more important, because a lot of links to the papermaking process requires a lot of steam drying, stereotypes and so on. However, along with the national policy of environmental protection departments to ban coal-fired boilers, and now more and more manufacturers have to use coal-fired boilers to coal-fired boilers upgrading or purchasing a new low - NOx emissions. Paper mill boilers from coal to gas fired boiler is an important direction of current reform, is one more type of enterprise transformation, especially in the area more natural gas, coal into gas boiler is the main way. 1, in order to transform mechanization layered fired boiler gas boiler, you should first remove the front arch and a rear arch, while increasing the bottom heating surface, instead grate, grate to prevent overheating, combustion; 2, through the furnace heat transfer calculation methods determining the size of the boiler, furnace flame center position, and then pouring furnace work. In order to avoid the center position after arch boiler tubes, based on the original slope of the original arch made pipe. 3, the furnace in order to prevent an explosion, when the coal-fired boiler furnace gas is substituted, or when fuel not atomized combustion gases in the furnace incomplete combustion or heating surface of the end of the furnace, a fire or explosion occurs, should be mounting the appropriate parts of the boiler explosion vent, and to increase the ignition and flame failure protection program control to automatic control means, to ensure safe operation of the boiler. 4, is closely related to the selection and arrangement of the burner and furnace, the filling degree of the flame in the furnace should preferably not to form a dead air. Gas burner arrangement considered reasonable and piping layout, easy operation, maintenance and inspection.
ZG Boiler can supply oil & gas fired steam coal fired boiler for paper making, coal fired steam boiler, biomass fired steam boiler, CFB steam boiler, waste heat steam boiler to paper mill. However, biomass fired steam boiler is the most suitable one for paper mill.