Installation of Steam Disengaging Drums

[recklesskid]

We are having problems in our steam disengaging drum. Basically, it is designed to accommodate 32 MT/hr steam production without carry-over but we are currently seeing this significantly after operating above 28 MT/hr. We are currently looking into the design of the drum for improvements. In parallel, we are thinking about installing another drum thus we would like to know the best orientation of their installation (parallel or series). We would highly appreciate your inputs on this.

 

[davefitz]

If the operating pressure is below the design value, then the velocity thru the disengaging drum will be above design and you will have caarryover. If that is the cause, then adding a backpressure control valve downstream of the drum may help.

Some modern plants use downstream driers, or internal wire mesh, to reduce carryover.