2 replies to this topic

[chemeng_student_stream]

Hey, I am designing a shell and tube heat exchanger as I mentioned earlier. I have narrowed my choice interms of TEMA down to AES and AET. i my tube side I have a highly fouling fluid and in my shell side I have clean fluid. I am confused as to how tube insides are cleaned in a STHE, since I have a heavily fouling fluid I may require frequent cleaning so need access for mechanical cleaning of inside of my tubes but I dont need access to tube outsides or shell. Is it better for me to choose a AES or AET, i have researched that AES has smaller capital cost but has higher cleaning costs and time. I also understood AET have the highest capital cost and lower thermal efficiency but the lower cleaning costs. Should I chose the AES since I wont need to remove my tube bundle to clean inside it, or should I chose AET, any help is appreciated

 

P.S - i have a likelihood  polymerization inside my tubes but the shell side is clean. Also both are toxic and high pressure.

 

I am also confused about whether you need to remove the tube bundle to clean inside it or you don't have to? ...

Edited by chemeng_student_stream, 06 October 2016 - 04:14 PM.

[breizh]

Hi ,

Depending the process used to perform the cleaning ( Chemical or High pressure cleaning) , you will need to remove the heads .

Since you have been talking fouling , polymer ,etc , I believe that High pressure cleaning is the way to clean  with full access to the bundle..

 

Breizh

Edited by breizh, 06 October 2016 - 10:03 PM.

[srfish]

There are several advantages in using hydrocleaning. The cost is less than other methods such as chemical cleaning. It is not damaging like mechanical cleaning can be.