Customer cases Kemira and Renova

Protection against crystallisation in process pumps

Several of our industrial customers experienced the same problem: their pumps were damaged when the medium crystallised on contact with air. Over time, the seals wore out, leading to leaks, downtime and increased maintenance costs.

This is a common problem in processes with:

  • lime
  • iron chloride
  • salt water
  • lye
  • and other crystallising media.

Lyma solution - liquid barrier with quench

To prevent crystallisation, a quench - and liquid barrier on the atmosphere side of the pump. The barrier fluid prevents oxygen contact and thus protects the seal against wear and clogging.

The fluid is self-circulating and pressureless, making the solution both maintenance-free and energy efficient. In the system, the fluid is transported in on one side and out on the other by the heat generated in the seal. The result is a stable and tight sealing area without crystallisation.

The result - longer lifetime and lower costs

By implementing a quench, the customer got a simple, cost-effective and sustainable protection against wear and tear. The solution has proven to be an economical alternative to double sealing, with clear improvements in reliability, service life and maintenance intervals.

 

The product used is Wernert-Pumpen horizontal centrifugal pump type NE with the addition of Quench.

Media  Lime milk 10 - 20%
Density  1.15 kg/dm³
temperature  Max 70°C
Capacity  4.5 m³/h
Lifting height  13 mvp

Media  FeSO4 solution with HCl
Viscosity  40 mPas at 20 °C
temperature  65-70 °C
Density  1.5 kg/dm³
Capacity  40 m3/h
Lifting height  13.6 mvp (about 2 bar)

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