3 replies to this topic

[josh_l]

Hello,

At our FCC a certain amount of catalyst is vented to atmosphere due to the loading system.
We are searching for a cleaner way to transport catalyst from the storage container into the storage silo.

The loading of fresh catalyst into the silo is done by creating vacuum with a steam ejector. Unfortunately, some of the catalyst it is drawn into the ejector and released into the atmosphere.

We would like to use a dust free system to refill the silo and stop the use of the steam ejector.

is there any recommened dust free system or even mechanical system that is used for that purpose?

Thank you,

Chen

[Absolute Zero]

what are physical properties of the catalyst e.g. its bulk density, dynamic flow rate??

[josh_l]

the catalyst particle size is between 20-100 micrometer, with an average size of 65 micrometer.
the bulk density is 0.85 g/ml

I don't know how much catalyst goes throw the ejector. I can assume that around 50kg/hr is lost.
we usually refill the fresh catalyst tank with a 20 tons batch. since it takes around 8 hours to do it, the flow rate into the tank is 2500kg/hr. we assume that 2% of it (which is the percentage of the very small catalyst particles) goes throw the ejector.

[Absolute Zero]

I assume that you are using pneumatic conveying system for transfer of catalyst, You should install a reverse jet dust collector for this application