The boiler adopts an environmentally friendly combustion method - full premixed combustion, and the gas and air are precisely adjusted and premixed in advance to ensure more complete combustion.
The boiler adopts a double-drum longitudinal "D" type arrangement structure; water, steam or steam-water mixture flows in the pipe; flame burns and flue gas flows outside the pipe, forming extremely fast steam-water.
Maintain this pressure for 4 hours to make sure circulation Close up the drum vents while the drum pressure gets to 2 kg/cm²G At the same time check out expansion of the unit wherever doable
· BOIL-OUT CHEMICALS Typical boil-out chemicals used are combinations of soda ash caustic soda and surfactants The boil-out of high-pressure units will primarily use disodium phosphate and surfactants Typical combinations and concentrations of boil-out chemicals are shown in the table below
Especially downstream turbines are sensitive for pollutions in the steam To avoid damages of the plant boiler drums and all water-bearing parts have to be boiled out with alkaline chemicals before commissioning the plant In the past conventional chemicals as soda or hydrofluoric acid were used
soda boiling for steam boiler soda boiling of boiler meansam Boilers Collaton Consultancy
· For normal first out of new the reagents used are caustic phosphates complex phosphate and silicates Usually a mixture of the vaious chemicals is
This reduces the alkaline (temporary) hardness a softening reduces non-alkaline (permanent) hardness by chemical reaction Ion exchange - Is by far the most widely used method of water treatment for shell boilers producing saturated steam This module will concentrate on the following processes by which water is treated: Base exchange Dealkalisation and Demineralisation
Close the manhole and fill the drum to the normal level Increase slowly the heat input to to raise pressure to 30psi (21 kg/cm2 (g) A good flow of steam from air release valves will be noticed Up on seeing this close the air release valveContinue increasing the pressure to 10kg/cm2 (g)
Steam pressure in the boiler should be kept between 5 and 10 pounds The should continue for 48 hours Immediately after out give a series of bottom blows to remove the bulk of the sludge The boiler should be cooled washed out immediately and given the usual mechanical cleaning [email protected] > Get A Quote >
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