Dec 01, 2016 · The water in a boiler under pressure by the heat released from fuel combustion occurs boiling heat, vaporize into steam, which is boiling under saturated steam boiler water temperature; pot high pressure, high temperature of saturated steam . 1.0 Mpa, such as saturated steam temperature 184 ℃, 1.25 Mpa saturated steam temperature of 193 ℃.
Get a quoteAs soon as the pressure rises inside the boiler, the deviation between the water density and saturated steam density tends to reduce resulting in less circulation. "To keep the same level of steam output at higher design pressures, the distance between the lower drum and the steam drum must be increased, or some means of forced circulation must be introduced."
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Get a quoteA boiler explosion is a catastrophic failure of a boiler.There are two types of boiler explosions. One type is a failure of the pressure parts of the steam and water sides. There can be many different causes, such as failure of the safety valve, corrosion of critical parts of the boiler, or low water level. Corrosion along the edges of lap joints was a common cause of early boiler explosions.
Get a quoteSaturated water at the bottom of the steam drum returns to the lower drum via large-bore 'downcomer tubes', where it pre-heats the feedwater supply. (In large utility boilers, the feedwater is supplied to the steam drum and the downcomers supply water to the bottom of the waterwalls).
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Get a quoteThe cleaning medium may be saturated steam, superheated steam, compressed air, water or a combination of these. Saturated steam is the most widely used medium because: Boiler-generated steam avoids the cost and maintenance of a compressor; Provides more flexibility if more aggressive cleaning is required; Avoids condensation in the cleaning flow which can accelerate boiler tube …
Get a quoteHowever, when the pressure in the water-tube boiler is increased, the difference between the densities of the water and saturated steam falls, consequently less circulation occurs. To keep the same level of steam output at higher design pressures, the distance between the lower drum and the steam drum must be increased, or some means of forced circulation must be introduced.
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