1 reply to this topic

[Art Montemayor]

Let's get to your questions, one-by-one:

1) How should I design a rotary filter drum for flows of 1000kg/h of solids and 37kg/h of solids respectivly?

I've never heard of any engineer (without prior experience and know-how) designing a very specialized piece of equipment, such as a rotary filter, and doing it successfully. This type of equipment is researched, tested, evaluated and tested again - on different types of feeds. There are no "public domain" equations of state, or magical formulas to calculate the filter. You basically do it by experience and know-how - both of which are normally 100% proprietary.

2) How large are typical rotary drums that are easy to get?

That all depends on what you consider "easy" to get. I would obtain or purchase a rotary filter from a proven and recognized supplier with years of experience.

3) How thick does the cake need to be to be able to peel it off?

That depends on what materials you are feeding and how fast. This takes extensive testing and researching.

4) How do I decide the submergence in the solution and the speed of rotation?

This is proprietary type of information and just can't be generalized. Again, I would go to a recognized manufacturer.


If you got this type of a student problem from a Chemical Engineering professor, shame on him/her. As a student, you probably don't know the depth of specialization involved in this type of equipment. This is not like designing a distillation tower or a heat exchanger. As a student, you simply don't have enough basic data to start (& much less finish) a serious design - one that is credible.

Can you be more specific as to why you are asking these questions?