Another problem with demineralizers is that small resin particles are often dislodged from the bed and enter the water stream.

All of the ion exchanger resins are temperature sensitive; therefore, a temperature diver valve bypasses letdown flow if the letdown heat exchanger outlet temperature rises to a predetermined value.

The working process of resin bed and working principle of acid purification unit and flowchart are described particularly. Making comparison of acid consumption of using it before and after.