Design of internal cooling coil 2

[georget4]

My question is, I want to know how and what all do we take in consideration in designing of internal coils (helical) for maintaining the temperature of chemical inside the reactor at 120 degree C. The reaction is exothermic (Phenol Formaldehyde Resin).
The cooling media is water from cooling tower at temp of 33 Degree and preassure at source is 2kg/cm2. the vessel is a 10000 liters reactor with external jacket for initial heating of the reactor. the reactor has turbine type agitator working at 70 RPM. The Dia of the Reactor is 2200 and the Shell Height is 2500mm.

How can the no. of turns in coil, the O.D or the surface area required, and the booster pump specification if required be calculated and worked out?

 

[georget4]

My question is, I want to know how and what all do we take in consideration in designing of internal coils (helical) for maintaining the temperature of chemical inside the reactor at 120 degree C. The reaction is exothermic (Phenol Formaldehyde Resin).
The cooling media is water from cooling tower at temp of 33 Degree and preassure at source is 2kg/cm2. the vessel is a 10000 liters reactor with external jacket for initial heating of the reactor. the reactor has turbine type agitator working at 70 RPM. The Dia of the Reactor is 2200 and the Shell Height is 2500mm.

How can the no. of turns in coil, the O.D or the surface area required, and the booster pump specification if required be calculated and worked out?

 

[MJCronin]

georget..

Your question really is:

"What surface area do I need for a cooling coil within an agitated vessel, given an established heat flux and cooling time ?

You must perform a heat transfer calculation for the coil size, area etc.

Before you can do anything else, you must answer two process questions: How much heat will be generated ? How long do you have to remove this heat ?

Post this question on a chemical engineering forum...

Madison Technical Software offers programs to perform this rather complex calculation:

http://www.madisonsoftware.com/page.php4?page=deltat

Let us know what you decide and the size of your coil


-MJC

 

[quark]

Process Heat Transfer by DQ Kern will be of great help to you.