Gas condensing boiler is based on the analysis and summary of the relationship between condensing efficiency of water vapor in flue gas and exhaust temperature, the relationship between condensing and thermal efficiency and the corrosion rate of condensate water on different steel grades. Through reasonable design of heating surface, the exhaust temperature is greatly reduced. Ensure that the vapor in the flue gas achieves the condensation rate required by the design. Condensing gas steam boiler is a condensing boiler which absorbs and uses the sensible heat in flue gas and the latent heat of vaporization released in the process of water vapor condensation, thus greatly improving the thermal efficiency of the boiler.
Taking the 6 ton gas fired boiler as an example, it can operate stably under the working condition of 80-100, and the operating parameters of the boiler under the rated load of 100 are: The water supply temperature is 20℃, the pressure is 2.5mpa, and 6 tons of water steam at 230℃ can be produced within 1 hour. When using natural gas as fuel, the calculated thermal efficiency is 99.6%, the exhaust temperature is 67.8℃, and the natural gas consumption is 400.2NM3/h.
The exhaust temperature of this series of steam boilers is one of the basic parameters of the boiler. Choosing a lower exhaust temperature can reduce the exhaust loss of the boiler, which is conducive to improving the thermal efficiency of the boiler. If the exhaust temperature of the boiler drops to a low enough level, then the superheated water vapor in the flue gas will condense and release the latent heat of vaporization. The energy saving effect of this series of boiler products is very remarkable, and the thermal efficiency can exceed 98% based on the low calorific value of fuel. The use of condensing gas steam boiler is more environmentally friendly, the harmful components in the flue gas dissolve in the condensate water, effectively reduce the emission, improve the emission index.
The condensing steam boiler adopts a large furnace design, which perfectly matches the burner flame and fully reduces the combustion temperature in the high temperature area of the flame. The low nitrogen burner is configured to suppress the rise of NOx concentration and meet the requirements of low ammonia emission. Using the optimization principle of elastic disturbance in heat transfer of threaded smoke tube, the threaded smoke tube with low resistance and high efficiency in heat transfer is designed, and the material is selected as high-quality low and medium pressure boiler tube (GB3087). Long life and good heat transfer. The boiler is equipped with external circulation device (FGR), ≤ 30mg/m3 discharge standard. Built-in pipe design, stainless steel pipe, high quality rock wool insulation.
Condensing gas steam boiler use safety, normal pressure operation, combustion, over temperature, water shortage and other multiple interlocking protection. The steam in the boiler condensing flue gas absorbs the condensation latent heat, so as to improve the thermal efficiency of the boiler. Using large size furnace structure and flue gas recirculation technology, the gas fired boiler can realize ultra low nitrogen emission and meet the increasingly strict environmental protection requirements. Zozen Boilers specializing in the production of various types of boiler, it can also be customized according to user requirements to provide boiler service, welcome everyone to come to the advisory procurement.