Centrifuge Optimisation

A recent independent centrifuge optimisation project at a multinational chemical company based in the South East of England has resulted in a 25% increase in production. Optimisation of 3 off vertical batch basket filtration type centrifuges has also provided operational and other cost saving benefits upstream and downstream of the centrifuge operation.

Existing Problem – The company had to meet a significant increase in demand for its products without investing in additional plant and equipment. The solution therefore was to optimise its existing centrifuge filtration process by looking to reduce cycles times, thus increasing product throughput. The process centred around three vertical batch basket filtration centrifuges, capable of recovering upto 1200 kg/hr final cake solids. To achieve this level of throughput it was necessary to both reduce the process cycles times and increase the payload of retained product solids in each basket load.

Solution – NCD Separation Solutions Ltd acted as the independent consultants on the project and carried out an initial Site Survey, submitting proposals for a comprehensive process optimisation package. Operator Training was particularly important in making them aware of revised process requirements and providing them with knowledge of centrifuge controls, capabilities and limitations and the need to maintain strict health and safety requirements.

Key Benefits – Cost savings were also identified through using less product wash fluid leading to a corresponding reduction in effluent discharge levels hence reducing operating costs. It was also possible to operate each centrifuge continuously for much longer periods before having to clean its internal surfaces. From a Health & Safety perspective, the improved operation of the process has reduced the frequency of basket inspections and cleaning operations by 50%.

According to site management the end result is a 25% increase in production which will help satisfy escalating demand from their clients around the world.

As a general spin-off from NCD involvement they have a filtration process which requires less maintenance, is more environmentally friendly and provides healthier working conditions for company site teams.