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CB steam blanket for hot standby?

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Posted by Marty on July 13, 2008 at 05:21:53:

I have worked with water tube boilers and HRSG's for many years. I just recently took a job with two Cleaver Brooks fire tube boilers (CEW-700-800-200)as standby units to the HRSG. I am curious as to why there is no steam blanket connection. Is this typical of fire tube boilers? I would like to hook up steam blankets to both fire tubes that would use steam from the HRSG. Doing this I would be able to save big $$ by not cycling the fire tubes on and off in order to keep them in hot standby (which is the sole purpose of these units 99.9% of the time). In my opinion, the amount of money spent on gas just to keep the boilers in hot standby is not justified....not even close. A warm standby provided by waste heat steam should be sufficient.
Does anybody have experience with CB firetube boilers that use steam blankets? If so, how did/does it work out for you? How often do you have to blow down in order to maintain operating level? Is it a good warm standby?
Thanks for any input.

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