Apr 19 2021 · We have excess air EA = O2 X 100 / (21-O2) EA = 4.7 X 100 / (20-4.7) EA = 30.71% 2-Calculate the Oxygen level (O2) in flue gas if excess air is 25% We have Excess air EA = O2 X 100 / (21-O2) 25 = O2 X 100 / (21-O2) O2 = 4.2% 3-A Boilers combustion system requires 5.5 kg of air for burning 1 kg of fuel then calculate the total air required for complete combustion if its flue gas has 4.1% of O2
In general the limit value of oxygen in make up water can be stared 0.10 mg/kg. For a complete protection from oxygen corrosion a chemical scavenger is required following mechanical deaeration. Membrane contractors are also a possibility. Find information about the main problems occurring in boilers: scaling foaming and priming and corrosion.
Nov 07 2016 · Large thermal power plants generate electricity by using the thermal energy of fuel. Most of the power plants are pulverized coal fired boiler that means thermal energy is generated by the combustion of pulverized (crushed) coal.In order to control the combustion processevery power plant has their Burner Management System/FSSS(Furnace Safeguard Supervisory System) systembut
General Boiler Information. 1 boiler horse power is about 42000 BTUs of INPUT. ... The spray will reduce the dissolved oxygen content to 20-50 ppb while the scrubber or trays further reduce the oxygen content to approximately 7 ppb or less. ... Because each boiler and plant operation is different maximum levels should be determined on an ...
Nov 07 2016 · Thus oxygen analyzer plays a key role for efficient combustion control so that we can get better efficiency.The Oxygen supplied for the combustion usually comes from the atmospheric air which contains 23% of oxygen and 77% of nitrogen by weight. Mathematicallythe quantity of oxygen required (in gms) per 1 gm of fuel is = 8/3 C + 8 (H-O/8) + S