Tank freeze protection for irregular operation
Tank freeze protection for irregular operation
(OP)
Dear all,
we are designing a new process. Our exiting units are inside this process will be outside. For safety reasons we are not using a building - flammable materials etc.
Our materials freeze around 20deg C. Normally in the process they are processed above 40deg C typically 90deg C and above and therefore no freezing issues are normally present. All our lines will be electically traced and lagged for startup and maintenance. But, what about vessels?
We have 8m3+ 15 m3 process vessels accumulators. Should they have heating coils or just lagged and traced. I want to avoid performing a complex heat transfer calculation taking into account startup conditions etc.
Is there any industry standards I could purchase or refer to? I'm wary of taking with a supply of coils etc, it would only be in their intrest to recommend one..
we are designing a new process. Our exiting units are inside this process will be outside. For safety reasons we are not using a building - flammable materials etc.
Our materials freeze around 20deg C. Normally in the process they are processed above 40deg C typically 90deg C and above and therefore no freezing issues are normally present. All our lines will be electically traced and lagged for startup and maintenance. But, what about vessels?
We have 8m3+ 15 m3 process vessels accumulators. Should they have heating coils or just lagged and traced. I want to avoid performing a complex heat transfer calculation taking into account startup conditions etc.
Is there any industry standards I could purchase or refer to? I'm wary of taking with a supply of coils etc, it would only be in their intrest to recommend one..





RE: Tank freeze protection for irregular operation
http://virtualpipeline.spaces.msn.com
RE: Tank freeze protection for irregular operation
Finish the job and provide necessary heat (coils, injection, tracing etc) to the tanks
You didn't list your winter design conditions but apparently it is below 20 deg C
RE: Tank freeze protection for irregular operation
Who said “plan for the worst, and hope for the best”?
Good luck,
Latexman
RE: Tank freeze protection for irregular operation
Perhaps your tank vendor has the staff on hand.
As our fellow commentators suggested, options appear to be heat tracing, heating coils, bayonette heater, or heat exchanger with recirculation pump back to tank, of course, all with insulation.
Good luck.
RE: Tank freeze protection for irregular operation
RE: Tank freeze protection for irregular operation
RE: Tank freeze protection for irregular operation
I've seen plants in ND, USA completely inside buildings with Tioga heaters that keep the whole build warm and ventilated.