Case study - Dosing of Sulfuric acid into potassium salt

A Swedish chemical producer needed to add sulfuric acid to potassium salt, as a step in their production of hydrochloric acid. The challenge was that the dosing needed to be very accurate over a long period of time.

Technical solution

Ramén Valves found the solution in a research control valve from Badger Meter which has a long and proven record of successful service in this type of application. The Badger Meter RCV ½” (Model RC 230) control valve had an electric actuator and trim in Hastelloy C. It is a seat valve which gives the highest accuracy and Kvs-value adapted for continuous dosing of small quantities.

The electric actuator makes it possible to precisely set the valve opening and thereby get a very accurate dosing. The trim in Hastelloy C has good resistance to the hydrochloric acid.

Dosing potassium salt image

Dosing of sulfuric acid – a Badger ½” control valve with an electric actuator and trim in Hastelloy C.

Badger RCV control valve in Swedish chemistry process

The Badger RCV control valve (bottom right) is dosing the sulfuric acid into potassium salt. At the top, there is a screw conveyor for the potassium salt. The sulfuric acid reaches the potassium salt where the pipe reaches the conveyor (to the left).