Re: Plug in Monotube boiler
Posted by:
Rolly (IP Logged)
Date: October 27, 2010 09:46AM
I know that when stanleys' get the fuel preheater coils plugged people have pumped grease into at up to 1000psi to unclog it.
Robert Hopkins
I have never heard of this before. All the ones I’ve worked on once the cable has got stuck to the point you can’t get it out, you scrap it and build a new one. Only on one was I able to feed oxygen inside and heat the outside red, and it burned the carbon out. By the time I finished I still scraped it and built a new one.
A mono tube boiler has a different problem. All the water that goes in one end has to come out the other end. All the minerals, all the microorganisms, all the dead plant vegetation. All the stuff no one thinks about that is in water gets cooked. In a normal boiler only clean steam goes to the superheater section of the boiler. All the crud stays in the boiler. In a normal boiler this is the black crud you blow out every time you shut the boiler down.
I have never used a mono tube boilers. But from what I’ve read about the Doble boilers it’s the last four or five feet of the superheat section that gets a buildup of crud inside the tube. The superheater section should be removable from the rest of the coil. Somewhere I’ve read that sandblasting through the tube has been used to remove the buildup. Never done it, only read about it.
Rolly
Rolly