Henan boiler exhaust gas temperature rise because the heat loss due to heat loss is the largest in Henan a gas boiler, typically 6% into the furnace heat, the exhaust gas temperature increasing every 12 ~ 15 ℃, smoke increased heat loss of 0.5%. Therefore, the exhaust gas temperature is one of the most important indicators Henan run gas boiler. Here are a few reasons may cause the furnace exhaust gas temperature rise: (1) heating surface slagging, fouling. Whether waterwall slagging furnace fouling, or superheater, preheater convection bank and fouling are due to the increased thermal resistance measuring flue gas, the flue gas heat deterioration of the cooling effect deteriorates, resulting in exhaust gas temperature increased. (2) the excess air ratio is too large. Under normal circumstances, as the furnace exit gas boiler Henan increase the excess air ratio, the exhaust gas temperature rises. After the excess air ratio increases, while the amount of smoke increases, the speed increase of smoke, heat strengthening of exiled, but less than the degree of increase in heat transfer gas volume increases more. It will be appreciated as the tobacco rate increased, the time to heat to the flue gas working fluid left the heating surface. (3) leakage factor is too large. Tail shaft furnace and boiler flue negative pressure leakage is inevitable, and provides a heating surface allowed leakage coefficient. When the coefficient of air leakage increases, the influence of the exhaust gas temperature and overfire air coefficient increases similarly. And the closer the leakage furnace, exhaust gas temperature raising effect on the greater. (4) water temperature. When the turbine load is low or high pressure splitting will feedwater heater when the temperature of the gas boiler Henan reduced. (5) the fuel moisture. The fuel in the flue gas to increase the amount of water increases, and therefore the exhaust gas temperature rises. (6) boiler load. Although Henan gas boiler load increases, the amount of smoke, the amount of steam to the water, the air amount increases in proportion, but since the furnace exit gas temperature is increased, so that the exhaust gas temperature rises. After the load is increased to increase the furnace outlet temperature, followed by convection heating surface temperature difference increases, an increase in heat absorption, the more so the convection heating surface, the smaller the impact load change of a boiler exhaust gas temperature.
Premix combustion ratio of air and gas can be controlled within the range, the mixed gas to ensure excess air ratio between 1.2-1.3, both to ensure full combustion of the fuel, but also to reduce the formation of nitrogen oxides, the boiler reduce the heat loss .
Shandong Zhaoyuan Mining Group Co., Ltd. is a large state-owned local asset management companies, gold mining dressing and smelting for leading industries, operates in the area of tourism, services, precious metals, real estate, eco-agriculture, with total assets of 10.2 billion yuan, Shanghai gold Exchange is an international provider of standard gold bullion. July 2017, Shandong Mining Group and fast boiler steam signed a 0.5-ton electric heating steam boiler which mainly produce steam for metallurgical mineral processing and other manufacturing processes, energy defeating small, strong ability to supply steam .
About Gas heating boiler heating surface problems outlined in the course of the purchase or use of the boiler, will often hear the term similar boiler heating surface, then what is the boiler heating surface, he was referring to what part of the boiler? Here Xiao Bian take you its a simple understanding. Gas heating boiler heating surface means absorbs heat from the heat medium and the heat transfer medium to the interface, it is divided into two kinds of convection and radiation heating surface. The so-called radiation heating surface, mainly in order to absorb the radiation heat transfer way from the heating surface of the heat medium heat; and convection heating surface generally refers to a flue gas through the heating surface. Under normal circumstances. Heating surface disposed in the furnace, and the furnace flue gas because of the high temperature, high intensity radiation heat transfer called radiation heating surface. After the outlet is arranged in the furnace, since the heating surface of the flue gas temperature is relatively low, the proportion of high convective heat transfer is called convection heating surface. In short, the gas heating boiler heating surface including economizer, water wall, superheater, reheater, judge anyway, its effects are used to perform the preheating feed water, evaporation, superheat, reheat task.
Revomax, is a versatile, fully automatic, instant steam generating range of boilers designed for safe and reliable operations. Easy to install and commission, these time-tested boilers require very little maintenance.Online chat
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