We have a 4" line that normally contains a water/methanol vapor flow of 1800 lb/hr at 230 deg F and 4 psig. During process upsets, a soap-like foam fills the line. We would like to use a sensor that would detect the foam flowing down the pipeline(prefer non-contact since the process tends to...
Thanks for the discussion. I liked the idea from "chief" of mixing ambient air with the hot flue gas to cool it down. That is thinking "outside the box". Calculations show this could work, but the boiler would have to be run at a much reduced rate to keep the volume of air reasonable.
Again...
Thanks for the reply MJC. Boiling in the economizer would not be good.
The economizer needs to remove ~30 MMBtu/hr of heat from the flue gases. The idea is to flow at least 700 gpm of cooling water through the economizer. This should heat the water to ~160 degF.
Is there a way to estimate...
We would appreciate comments or shared experiences for a significant problem we are dealing with. Thanks.
The pulp mill I work at has a boiler with an economizer that has developed tube leaks (boiler capacity is 200,000 lb/hr at 850psig/825F steam - fed with 305F dearated feedwater). The...
