Application scope of water tube steam boiler: school heating, food processing, petroleum refining, etc. Natural gas steam boiler flue gas flow: the burner is fixed on the front wall, after the fuel is sprayed from the burner, it is burned in the furnace with slight positive pressure, and the high-temperature flue gas generated is radiated and heated, and then turned 180° to the left behind the furnace The convection tube bundle that enters the second return journey flows to the front of the furnace and enters the horizontal superheater, turns 180° to the left in front of the furnace, enters the convection tube bundle of the economizer, and then fully exchanges heat through the economizer, and then enters the chimney via the flue atmosphere.
The natural gas boiler adopts the design idea of flue gas cascade waste heat recovery, and a flue gas condenser is installed at the tail of the boiler body, which reduces the flue gas temperature (<; 100°C) and improves the boiler efficiency while reducing harmful components in the flue gas. ; Selection of burners and reasonable furnace structure to ensure sufficient combustion, emission of flue gas composition in line with the national first-class area environmental protection indicators, noise is also lower than the national standard.
The heating surface of the water-tube gas boiler is reasonably arranged, the technical parameters are selected appropriately, and the heat transfer area is surplus, so it has a certain overload capacity. Boiler flue gas and working fluid are arranged in countercurrent, with high average temperature and pressure, good heat transfer, reasonable selection of furnace volume, to ensure full combustion of fuel, and insulation materials using aluminum silicate felt and ultra-fine glass wool, with a total thickness of about 200mm. There is an air interlayer between the thermal insulation layers. This thermal insulation reduces the heat dissipation loss of the boiler, greatly improves the thermal efficiency, saves fuel, and lowers operating costs.
The SZS series steam boiler condenser not only absorbs a large amount of sensible heat in the flue gas, but also absorbs a large amount of latent heat in the flue gas, making the boiler efficiency higher than ordinary boilers, and the condensation waste heat recovery device adopts acid-resistant, chloride ion-corrosive ND steel. Greatly extend the service life of the boiler.
Manholes are arranged at the front and back of the upper and lower drums of the water-tube natural gas boiler, and inspection doors are arranged on the back of the furnace and on the flue to facilitate maintenance. The boiler is a self-contained boiler, which can shorten the installation period while meeting the transportation size requirements. At the same time, the aluminum outer casing and the frame are connected by bolts, which is convenient for disassembly and maintenance.
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