Search results
Results from the WOW.Com Content Network
Boiler feedwater is the water which is supplied to a boiler. The feed water is put into the steam drum from a feed pump. In the steam drum the feed water is then turned into steam from the heat. After the steam is used, it is then dumped to the main condenser. From the condenser, it is then pumped to the deaerated feed tank.
Less flow resistance, lower dissolved feedwater iron concentrations, FeOOH film is more stable, reduced boiler cleaning frequency - Disadvantages: Increased risk of FAC, a deaerator is required, more frequent chemical cleaning is required, hazardous chemicals (hydrazine) are used. A deaerator is required. Air leakage is more serious.
The deaerated water flows down into the horizontal storage vessel from where it is pumped to the steam generating boiler system. Low-pressure heating steam, which enters the horizontal vessel through a Sparge Pipe in the bottom of the vessel, is provided to keep the stored boiler feedwater warm.
Boiler water is liquid water within a boiler, or in associated piping, pumps and other equipment, that is intended for evaporation into steam. The term may also be applied to raw water intended for use in boilers, treated boiler feedwater , steam condensate being returned to a boiler, or boiler blowdown being removed from a boiler.
A steam boiler evaporates liquid water to form steam, or gaseous water, and requires frequent replenishment of boiler feedwater for the continuous production of steam required by most boiler applications. Water is a capable solvent, and will dissolve small amounts of solids from piping and containers including the boiler.
Typical cleaning cycles are completed in 12 minutes. [4] Alfa Laval Gamajet device after cleaning ketchup tank. The Butterworth Type K machine is widely used. [1] This model can clean a tank of up to 10,000,000 US gallons (38,000 m 3). [1] It uses water with a pressure up to 250 psi (1,700 kPa) and a temperature of up to 250 °F (121 °C). [1]
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The steam heats the water in the tank; The water in the tank serves as a surge volume within the steam plant. The deaerating feed tank's surge volume allows the ship to change "bells" (steam turbine power output) and change the ship's speed without running the feed pump dry or flooding the turbines with liquid water.