FANGKUAI’s water tube steam boiler is a steam boiler with a double-drum longitudinal arrangement, full-membrane water-cooled wall, D-shaped furnace natural circulation, and micro-positive pressure combustion. Seam steel tubes form convection tube bundles, and the right side is the combustion chamber composed of upper and lower headers and membrane walls. The burner is fixed on the front wall. After the fuel is sprayed out by the burner, it burns in the furnace (the first return pass) with slight positive pressure. After the high-temperature flue gas radiates and releases heat, it turns 180° to the left behind the furnace and enters the second pass. The convection tube bank of the second pass flows to the front of the furnace, turns 180° to the right in front of the furnace, enters the convection tube bank of the economizer (the third return pass), then passes through the condenser to fully exchange heat, and finally enters the chimney through the flue and discharges into the atmosphere.
The basic design of a fire tube steam boiler consists of a cylindrical shell, with tubes running through it. The tubes are surrounded by the water that needs to be heated, and the flames and hot gases from the burner pass through the tubes to heat the water. As the water is heated, it turns into steam, which can then be used for food processing, printing and dyeing, pharmaceutical, packaging, and other industrial enterprises to provide production steam, medical institutions to provide disinfection steam, and to provide heating for other enterprises and hotels Provide steam and provide domestic hot water through heat exchanger heating.
SZL series coal fired steam boiler is a new type of water tube assembled boiler independently developed by Fangkuai and integrating the advantages of bulk boiler arches. It cleverly applies the water-cooled arch technology and membrane water wall technology of the combustion system of large chain grate boilers to assembled boilers. The boiler is mainly composed of upper and lower drums, convection tube bundles, water-cooled wall tubes, downcomers, and headers. The upper and lower drums are arranged vertically. The combustion equipment adopts a chain-belt chain grate and is driven by a stepless transmission device. The boiler body consists of vertical upper and lower drums and convection tube bundles. Water-cooled walls are arranged around the combustion chamber, and the front and rear arches are made of water-cooled walls as the skeleton is poured with refractory castables, so the service life of the furnace arch is longer. The left and right sides of the main body are full-membrane water-cooled wall structures, the boiler is well sealed, and the heat dissipation loss is small, ensuring the safe and efficient operation of the boiler.
The DZL series biomass steam boiler independently developed by Fangkuai is a new fourth-generation horizontal water-fire tube quick-installed chain grate boiler. This series of boilers has the advantages of fast installation, time-saving and material-saving, compact structure, small footprint, high reliability, high thermal efficiency, and strong overload capacity, etc. The large parts of the boiler (upper body and lower base) have been installed in the factory After the assembly is completed after the large parts of the boiler are put in place at the user’s site, it only needs to complete the various interfaces, auxiliary machines, and piping systems to operate. DZL series boilers adopt light chain grates, a high degree of automation, are equipped with high-efficiency dust removal equipment, have less environmental pollution, have good comprehensive economic and technical indicators, and are well received by consumers.