soot blowing cycle
soot blowing cycle
(OP)
I am working on a 100 MW boiler proposal. In order to estimate annual coal cost, we need to know how long we will run the sootblowers. I have 52 sootblowers. Can I assume each sootblowers need 2 minutes to finish sootblowing, so total sootblowing time per shift would be about 100 minutes? I have no operation experience, so I hope to get advice from people with real experience to confirm my assumption. Thank you very much.





RE: soot blowing cycle
RE: soot blowing cycle
RE: soot blowing cycle
There are companies that specialize in SB controls that blow critical blowers on a different time table than non critical blowers. There is not much use in blowing a blower that doesn't need blowing while neglecting one in a zone that is building up ash.
They also program to blow based on measurable parameters, temperatures, etc throughout the boiler.
I will think for a while and try to post back when I remember their name.
rmw
RE: soot blowing cycle
Most of the other designs with wider tube spacing used venturi nozzles and cleaning was more dependent on steam velocity.
The steam consumption varied tremendously between the two nozzle designs and depending on depth of furnace/gen bank its going to drive # of nozzles. So I don't think its an easy thing to SWAG unless you had better definition of nozzles/# nozzles/time of blow.
RE: soot blowing cycle
RE: soot blowing cycle
RE: soot blowing cycle
Contact Copes Vulcan, or Diamond or Clyde or Bergeman or any other soot blowing manufacturer you can find. Read their literature and websites.
Too little sootblowing and you will plug your boiler up. Too much, and you will waste energy and cause unnecessary tube wear.
rmw
RE: soot blowing cycle
RE: soot blowing cycle
Sootblowing requirement and steam consumption is typically boiler supplier's guaranteed value based on fuel, combustion method and, of course, their boiler design. Therefore your best shot is contacting your boiler (even potential) supplier.
For general estimation, yes, contact the sootblower guys for typical values.
Boilerone