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Sulphuric Acid Transfer Pump

It may be hard to find a sulphuric acid pump that can handle corrosive nature of the acid and can control the flow when feed tank level is variable. Flowrox LPP-T pump can do both.

Application: Chemical industry, Sulphuric Acid Process

Challenge: Find a pump that can handle corrosive medium and at the same time provide flexible flow control

Solution: 1 Flowrox LPP-T peristaltic pump

Results: Reduced maintenance intervals, reduced maintenance costs

The One That Beats The Odds

Since its installation in early 2004 in Finland, the Flowrox peristaltic pump has been pumping sulphuric acid to a thickener in which the sulphuric acid reacts as a flocculent. Equipped with a detector for early hose leak warning, the LPP-T is working as the main sulphuric acid transfer pump; a standby pump is reserved for maintenance. Hose changes are carried out according to a preventive maintenance schedule.

The sulphuric acid concentration ranges from 20 to 30% at ambient temperatures with slurry specified gravity (S.G.) of 1.3. The flow rate varies from 0.2 to 0.5 m³/h and the maximum speed is 35 rpm. The flow-rate is controlled by an inverter; the average flow being 9 l/min.

Process conditions:

  • Specific Gravity: 1.3
  • Solids Content: 20 – 30 %
  • Temperature: Ambient
  • Medium: Corrosive sulphuric acid
sulphuric acid transfer pump flowsheet

Flowsheet of the process.

A PID control loop with fixed set point and process feedback from Krohne Coriolis mass flow meter controls the pump. The PID controller gives a control signal of 4 – 20 mA to the inverter, which regulates the speed and flow of the pump. Made of the most durable and resistant materials, the robust Flowrox LPP-T proved to be a great choice as the sulphuric acid transfer pump. It provides a safe and reliable liquid transfer even when handling the most aggressive media.

Key benefits

Reliable liquid transfer

Flexible flow control

Handles aggressive media

testing
NOTE: Flowrox sells valve and pump businesses to Neles
NOTE: Flowrox pump and valve businesses sold to Neles