Gas steam boiler back structure, the use of (FGR) flue gas external circulation, full premix surface combustion and other technical advantages, NOX emissions to meet the specified standards. Gas fired boiler supply with blue flame burners, NOX emissions may also meet the corresponding emission standards. The energy saving effect is very significant, and the thermal efficiency is more than 100% based on the low calorific value of fuel.
The boiler structure adopts highly integrated technology, which highly integrates the body heating surface with the low temperature extended heating surface (energy saver and condenser). This type of boiler has compact structure, small footprint, saves the construction land and capital construction cost of boiler house, and simplifies the field installation workload. The harmful gas of the flue gas of the series boiler products is effectively controlled, and with the condensate flowing into the neutralization pool, the emission is effectively reduced and the emission index is improved.
The thermal efficiency of gas industrial boilers can only reach 85%~92%, and the exhaust temperature is generally 140~250℃. The water produced when the fuel is burned (such as natural gas: CH4+2O2→CO2+2H2O↑) is in a superheated state of water vapor in the flue gas, which is lost from the chimney with the flue gas. Gas fired boiler supply the principle of releasing a large amount of latent heat of vaporization during the process of condensing water vapor into liquid water. By adding flue gas waste heat recovery device, the exhaust temperature is reduced to 50~70℃, and the sensible heat in flue gas and the condensation latent heat of water steam are fully recovered, and the theoretical thermal efficiency can exceed 100%. (In general, the boiler with thermal efficiency of more than 100% is difficult to understand in common sense, but the latent heat of condensation of water steam in the flue gas is used, and the exhaust temperature is reduced low enough, and the exhaust loss is very low, the thermal efficiency of the boiler will exceed 100%.)
The series of steam boiler through reasonable design of heating surface, greatly reduce the exhaust temperature, to ensure that the water vapor in the flue gas to meet the design requirements of low nitrogen rate. At the same time, the boiler also absorbs and utilizes the sensible heat in the 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. The boiler body in the lifting, first of all should be prepared according to the weight of the boiler body lifting tools, general boiler is two points lifting, two lugs in the upper part of the boiler, the lifting wire rope as long as possible, as far as possible to reduce the horizontal force caused by the lifting wire rope.
Gas fired boiler supply application of digital control technology, remote control of the combustion process. High degree of automation, a variety of perfect protection, water level and pressure to achieve automatic control. WNS series steam boiler flue with bypass flue, according to the size of the boiler load, to adjust the use of condenser. Because we have done a lot of work in the aspects of combustion and heat transfer, some new structures and new technologies have been adopted to reduce the volume of the boiler, reduce the occupation of the machine room and reduce the weight.