How Do Suspended Solids Affect Carry-over?
The theory advanced is that suspended solids collect in the surface film surrounding a steam bubble and make it tougher. The steam bubble therefore resists breaking and builds up a foam. It is believed that the finer the suspended particles the greater their collection in the bubble. Experience indicates, however, that many boilers operate with exceedingly high suspended solids without carry-over while others have carry-over with only a trace of suspended solids. This would seem to indicate that the type as well as the quantity of suspended solids has much to do with carry-over.
