Blowdown Vessel

grain

Hi, could someone please explain the function of a Blowdown vessel and explain the connections between it and a steam boiler or point me in the direction of a relevant article. (I have searched for the topic in the archives but found nothing)

crash2009

Blowdown tanks

 are used as an alternative system for cooling the bottom boiler blowdown. These large tanks retain the blowdown water volume from one blow after the flash steam has been vented to the atmosphere and allow the water to cool down by natural convection over 6-12 hour period. The cooled water will be below 140° Farhrenheit when it is displaced by the next blowdown and forced out of the overflow drainpipe.



http://search.yahoo.com/search;_ylt=ArHzBDrgMIpkkM4aGv43u6KbvZx4?p=steam+blowdown+tank&toggle=1&cop=mss&ei=UTF-8&fr=yfp-t-373