Amine Unit Filter - Carbon Particle Carryover
Amine Unit Filter - Carbon Particle Carryover
(OP)
We're proceeding with the design of an amine unit. The carbon filter design includes a Johnson screen with 0.011" slots. A question has been brought to determine if a guard filter is required downstream of the carbon bed to prevent carryover of carbon particles into the regeneration column. I would like feedback whether the guard (particulate) filter or duplex strainer is necessary considering that the carbon bed filter has a built-in screen.





RE: Amine Unit Filter - Carbon Particle Carryover
All designs I have seen with Carbon filters do have a downstream particle filter at about 10um. Although I havent seen the carbon filter myself I heard that it does contain some black deposits which I assume is carbon fines. The screens will only hold large carbon particles in the mm size and the filter will capture the um sized ones. If chose not to install an afterfilter you run the risk to foam up your contactor(s) due to carbon fines.
RE: Amine Unit Filter - Carbon Particle Carryover
RE: Amine Unit Filter - Carbon Particle Carryover
You might also consider the fact that coconut shell-based carbons are significantly harder than peat-based or coal-based. They tend to produce the least amount of carbon fines and sloughage. They also have the greatest surface area and activity (iodine number), by comparison.
S. Bush
www.water-eg.com
RE: Amine Unit Filter - Carbon Particle Carryover