The full name of SZS boiler is double-drum longitudinal layout chamber fired water tube boiler. An industrial boiler in which a combustion chamber and a heating surface are arranged outside the drum, so that water and steam flow in the tube. SZS boiler drum has a small diameter, high working pressure, and small boiler water capacity. Once an accident occurs, the disaster is relatively light. At the same time, the natural gas fired boiler has good water circulation and high evaporation efficiency. The ability to adapt to load changes is better, and the thermal efficiency is also improved.
The horizontal SZS series boiler body is sealed reliably to prevent flue gas leakage. Equipped with an energy saver, the condensation heat exchange is more sufficient, the heat exchange efficiency is improved, and the exhaust gas temperature is lower. Natural gas, liquefied gas, city gas, biogas, etc. can be used to meet the requirements for burning multiple fuels. This series of steam boilers have a composite water circulation structure, and each heating surface is designed with safe water speed and has superior power failure protection functions. The furnace wall is made of light-weight materials with high thermal resistance, which has good thermal insulation performance and low heat dissipation loss.
The natural gas fired boiler uses low nitrogen and environmental protection, SOx ≤5mg, NOx ≤30mg, and various pollutant indicators are far below the emission standard requirements. The boiler runs under slight positive pressure, has low power consumption without induced draft fan, has overload capacity, is convenient to maintain, and greatly reduces the cost. The total weight of the SZS series gas boiler is only 1/2 of the coal furnace with the same capacity, the basic load-bearing load is reduced, and the cost of the boiler room is reduced. In the overall design, the boiler heating surface layout is reasonable, the technical parameters are selected appropriately, the heat transfer area is surplus, and it has a certain overload capacity, which can meet the temporary high load operation.
The heating surface of this series of boilers adopts natural circulation, and the flow rate of steam and water is determined according to the upper limit of the standard value. Prevent oxygen corrosion and impurity precipitation, and avoid bad accidents such as pipe burst or water hammer caused by overheating and boiling of the heated surface. The flue gas and working fluid of SZS series steam boiler adopt countercurrent arrangement, with large average temperature difference and good heat transfer. The large furnace volume ensures full combustion of fuel. The total thickness of the insulation layer is more than 200mm, which minimizes the heat loss. The thermal efficiency is greatly improved, and it is more energy-saving and environmentally friendly. At the same time, this series of boilers are equipped with two φ900/φ700 (φ: diameter) drums and two φ159 headers. The boiler is gas fuel, and the heat storage in the furnace is very small. The vaporization rate of water after a power outage is low, and the power outage protection operation is very simple.
The natural gas fired boiler adopts more than 95% automatic welding equipment, and each boiler is inspected and quenched before leaving the factory. Ensure that the inspection pass rate is 100%. The drum is not directly heated. By placing a tube containing water vapor in the furnace and flue as the heating surface, the heat transfer and safety performance are significantly improved. SZS series horizontal boilers are equipped with a large number of heat transfer pipes in the furnace body, with a large heat transfer area and high thermal efficiency, thereby saving a lot of fuel costs.