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The steam piping is directed through the flue gas path in the boiler furnace, an area in which the temperature is typically between 1,300 and 1,600 degrees Celsius (2,372 and 2,912 degrees Fahrenheit). Some superheaters are radiant type, which as the name suggests, they absorb heat by radiation. Others are convection type, absorbing heat from a fluid. Some are a combination of the two …

Boiler flue gases are often rejected to the stack at temperatures more than 100°F to 150°F higher than the temperature of the generated steam.

15-11-2004· Four pass firetube boilers that utilize a refractory shelf for the chaning flue gas direction (like Cleaver Brooks boilers) can fail cuasing a short circuiting affect that will affect boiler output and increase stack temperature. If your boiler is a C-B I would check teh rear door shelf. RE: HIGH FLUE GAS TEMPERATURE gladkenn (Mechanical) (OP) 5 Nov 04 04:49. You share a couple of causes for …

The latter consist mainly of hot steam, the components of which can be acidic. To protect the boiler itself and the flue gas system from this acidic steam, older boilers direct the flue gases outside. Depending on the heating technology, the exhaust gas temperature can be up to 200 degrees Celsius.

19-06-2019· This is somewhat different than the temperature control setup, where flue gas in blown directly into the boiler. Thus, while FGR is effective for both boiler temperature control and NOx reduction, they require different injection points. Exhaust gas recirculation (EGR), which is essentially FGR for internal combustion engines, was introduced in the 1970s. EGR is now required by the EPA …

Flue Gas Waste Heat Boiler 2020-1-18 ·â€‚Due to the return oil temperature is higher, generally in the 200-250℃,and the boiler exhaust gas temperature is also higher, which can be reach 300-350℃. If the heat from flue gas emission directly into the atmosphere, which may cause a lot of heat loss in vain.

Thus flue gas condensation is normally implemented at biomass fired boilers and waste incinerators connected district heating grids with relatively low return temperatures (below approximately 55 °C (131 °F)).

Generating steam from flue gases. Generating steam is a profitable way of reusing high-temperature waste heat. This can reduce the load on process steam boilers and allows you to save fuel or use the extra capacity for electricity generation. Alfa Laval Aalborg offers a series of highly efficient waste heat recovery boilers that extract heat from hot flue gases and generate steam or hot water. A boiler is …

Flue gas dew point temperature is the temperature where condensation of water vapor in the flue gas starts. Dew Point Temperature of Flue Gases (pdf) Sponsored Links . Related Topics . Combustion - Boiler house topics - fuels like oil, gas, coal, wood - chimneys, safety valves, tanks - combustion efficiency; Related Documents . Combustion Efficiency and Excess Air - Optimizing boilers efficiency …