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Salt build up in Benfield Units (acceptable levels?)

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JohnCalvin

Chemical
Joined
Jun 19, 2003
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11
Location
ZA
Hello,

Can anyone who has experience in Benfield units please tell me what sort of levels of potassium salts (aka PBS)are acceptable in the solution of the Hot Potash process? What are the typical levels experienced in these units and do they adversely affect your operations? If so, at what level?
These potassium salts can be thought of as the Hot Potash analog of the Heat Stable Salt formation in amine units.

Our process typically has a (rare) maximum of 3.8 % by weight in solution, with a 28 % equivalent K2CO3 strength.
 
I'm not familiar with the term PBS, do you know what salts are present.
Is it a Benfield or Catacarb unit ?
 
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