Coal-fired steam boiler is a horizontal three – return water – fire tube mixed boiler. Coal fired automatic boiler is arranged in the barrel of a bunch of smoke pipe, the left and right sides of the furnace is equipped with light pipe water cooling wall, the upper part of the eight-figure flue. The boiler adopts light chain grate to realize mechanical fueling, and is equipped with blower and induced draft fan for mechanical ventilation.
The front and rear arches of this series of steam boilers adopt new technical furnace arches. With fuel from coal bucket on the front of the fire grate, grate, a preheated coal carbonization, ignition, combustion, state slag fall into slag bucket, row from time to time by the slag machine, smoke throat between before and after the arch can form vortex mixing with air, and heating before arch, improve fire condition, the upper arch export smokestack into two wings convection bank, through smoke box before into the threaded pipe, After the economizer, dust collector, by induced draft fan to the chimney discharge.
Coal-fired boilers can be widely used in clothing manufacturing industry, food processing industry, hotel service industry, petrochemical, schools, hospitals and enterprises and institutions, especially for high requirements of enterprises in some areas of the user. The boiler products are equipped with drum induced draft fan for mechanical ventilation, and equipped with slag machine to achieve mechanical slag, complete control monitoring instruments, steam boiler stable and reliable operation. The rated steam pressure of this series boiler is 1.25mpa, with wide adaptability of coal, compact design structure and novel appearance, which can be widely used for industrial or domestic steam in factories and mining enterprises and organs.
In the furnace of the coal-fired steam boiler, the high efficiency and energy saving furnace arch with the whole casting of heat-resistant concrete is adopted to improve the coal ignition condition, and an independent air chamber is adopted to achieve the reasonable distribution of air, so that an aerodynamic field conducive to combustion is formed in the furnace, thus expanding the adaptability of coal species. A secondary air is arranged at the throat of the furnace arch, which can effectively organize the mixing of volatile components and air in the fuel, promote the full combustion of volatile components in the furnace, and improve the efficiency of fuel burnout. Coal fired automatic boiler can run normally under 70% ~ 100% load. Its operating parameters are feed water temperature, steam pressure, fuel consumption, fuel type, steam temperature, boiler evaporation, steel consumption, efficiency and exhaust temperature.
Automatic horizontal steam boiler main heating surface tube is made of 20# low and medium pressure boiler seamless steel tube, boiler barrel is made of special steel plate. The inner diameter of the drum is 1400mm and the wall thickness is 10mm. The left and right containers are made of φ159×6 seamless steel tubes. In order to better achieve the purpose of dust removal in the furnace, the middle wall adopts blank structure. Boiler front wall, middle wall and back wall are made of universal firebrick masonry. The heat exchange system of coal fired automatic boiler consists of drum, left and right collector box, water wall and convection tube bundle. Transport to the installation site for assembly, which can greatly shorten the installation cycle and ensure the quality of product installation.