Coal-fired boiler planning type, coal combustion boiler according to common can be divided into layers ignition, combustion methods such as suspension, corresponding to a fixed grate boiler boiler or moving grate boiler (hand burning stove), grate Pai boiler, reciprocating grate boilers and furnaces pleasure, circulating fluidized bed boilers; can be divided according to the way packaged boiler equipment, assembly and bulk boiler boiler; boiler can purchase a variety of heat efficiency and reach different, Its steel consumption is not the same, the device is not the same cycle length, the same rated boiler evaporation equipment required size is not the same place, not the same adaptability of coal fluidized bed steam boiler, the differences are more quotes large; should be considered according to summarize the most economical use of local coal, production needs, equipment, premises, using capital and other purchase. Thermal efficiency of coal-fired boilers, boiler thermal efficiency is the most direct impact on the use of capital parameters boiler, the higher the better thermal efficiency; boiler manufacturers for their own good, the thermal efficiency of the boiler usually exaggerated, but the thermal efficiency of the internship normally reach. (L) Rated evaporation is greater than 0.5t / h of energy saving boiler steam boiler, at least two safety valves installed; rated evaporation that is less than or 0.5t / h steam boiler, at least install a safety valve. Separable economizer outlet of the steam superheater safety valve installed at the outlet are required. (2) safety valve should be installed vertically in the highest position the boiler drum, set box. Between the valve and the drum or header, not equipped with access to the outlet pipe and valves energy saving boiler. (3) there must be a safety valve to prevent the hammer leveraged their own mobile devices and limit leverage deviant guides, spring-loaded safety valve must be promoted to handle and prevent casual twist adjustment screw devices. } (4) For the rated steam pressure that is less than or 3.82MPa boiler burning biomass steam boiler safety valve throat diameter of not less than 25mm; For the rated steam pressure is greater than 3.82MPa boiler safety valve throat diameter of not less than 20mm. (5) connecting pipe and boiler safety valve, energy saving boiler its cross-sectional area of ??not less than the cross-sectional area of ??the inlet valve. If several valves installed together on a short tube directly connected with the drum, channel cross-sectional area of ??not less than short tube all the exhaust valve area 1.25 times. (6) general safety valve should be installed in the exhaust pipe, exhaust pipe runs should be a safe place, and there is sufficient cross-sectional area, to ensure the smooth flow of the exhaust. Safety valve should be fitted with an exhaust pipe at the bottom of the drainage pipe connected to a safe place, in the exhaust pipe and do not allow the installation of drainage pipe valve. Coal-fired steam boilers, steam boilers, boiler provided by the Hebei Arts Arts boiler limited liability company. Hebei Arts boiler limited liability company (www.yi-neng.cn) strong, credible, Cangzhou in Hebei industrial boilers and accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the arts into the brilliant boiler and you work for a better future!