Gas fired steam boiler heating surface layout is reasonable, technical parameters are appropriate, heat transfer area is surplus, so it has a certain overload capacity. 20t/h gas steam boiler flue gas and working medium using countercurrent arrangement, average temperature and pressure is large, good heat transfer. The furnace volume is reasonable to ensure full combustion of fuel. Aluminum silicate felt and superfine glass silk wool are used as insulation materials, with a total thickness of about 200mm.
This series of steam boiler uses two kinds of insulation layer for air interlayer, this kind of insulation insulation makes the heat dissipation loss of the boiler to a minimum. WNS series boilers greatly improve thermal efficiency, save fuel, low operating cost. The condenser not only absorbs a lot of sensible heat in the flue gas, but also absorbs a lot of latent heat in the flue gas, so that the efficiency of the boiler is higher than that of the ordinary boiler, and the condensing waste heat recovery device adopts special acid-resistant ND steel, chloride ion corrosion, which greatly extends the service life of the boiler.
This type of gas fired boiler adopts the design idea of flue gas step waste heat recovery. The flue gas condenser is arranged in the tail of the boiler body, which reduces the flue gas temperature (<100℃) and improves the boiler efficiency while reducing the harmful components in the flue gas. The design and production of 20t/h gas steam boiler consider the needs of actual working conditions, with perfect protection function. Boiler equipped with electrical instruments and components, as well as humanized digital control system, operation instructions, fault display, operation status display, the cause of failure is clear, fault signals can be connected to the electric control box, can also be directly connected to the boiler room, the boiler under the monitoring operation.
Threaded steel pipes and spiral turbulent strips are arranged in the flue pipes of this series of boiler products. The degree of turbulence of flue gas and the residence time of flue gas in the furnace enhance the heat transfer effect. The outer side of the furnace body is covered with a thick mineral wool insulation layer, and the front and rear smoke boxes are insulated by a combination of heat-resistant materials and high-density mineral wool, resulting in heat loss. The steam boiler is equipped with combustion efficiency, the flue gas is burned in a wide furnace, and the emission of harmful substances is lower than the standard. The WNS series steam boiler adopts low-nitrogen combustion large furnace full-mixed combustion and is equipped with heat transfer threaded smoke tube technology, infused with flue gas external circulation (FGR) or full premixed surface combustion technology principle, and fully meets the 30mg low-nitrogen NOx combustion emission standard after testing , And fully suitable for 30mg low nitrogen emission urban heating demand.
The 20t/h gas steam boiler adopts the screw heat transfer calculation and the screw disturbance design principle. Through 3D animation simulation, design the threaded smoke pipe with small heat transfer resistance. And the use of high-quality seamless steel pipes makes it good heat transfer, low friction resistance and prolonged service life. The steam boiler is equipped with an invisible FGR flue gas external circulation configuration, which can meet the emission standard of 30mg low-nitrogen burners. It is equipped with a Siemens solenoid valve to control the flue gas flow recirculation rate according to the burner’s own combustion conditions to achieve the ideal low nitrogen emission below 30mg.