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Sulphuric acid slurry pumped with Techniflo mag drive pump

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Techniflo mag drive pumps from Global Pumps are being used to pump corrosive slurry into a filter press at an ethanol plant in Australia.

The peristaltic hose pump previously used for the application had pulsation issues and could only produce a 6-Bar maximum. The pump was required to handle a 15% sulphuric acid slurry containing 30% solids concentration of up to 2mm in size with approximately half of the concentration made up of solids less than 0.1mm.

The thixotropic slurry meant that it could become thicker when not agitated, while remaining reasonably fluid if kept agitated at a temperature of above 50ºC. The duty flow rate required was 120l/min @ 6-11 Bar discharge pressure with the pressure varying depending on the filter. Higher pressure was required when the filter became more clogged.

An additional challenge in the application was that the power consumption had to be limited to 5.5kW, which was achieved by using a variable speed drive to prevent the pump from drawing more than the limit.

Global Pumps supplied a Techniflo TB mag drive pump model TB2x1x10C coupled to a 5.5kW motor to effectively transfer the corrosive slurry into the filter press. The Techniflo TB Series magnetic drive pumps are specially designed to handle slurries with solids concentration of up to 30% and particle sizes up to 6mm in size.

Clearance rings in the TB Series Techniflo mag drive centrifugal pumps additionally restrict solids greater than 0.1mm from entering the containment shell area, keeping all bearings and critical flow paths clear.

Techniflo magnetic pumps from Global Pumps have been found ideal for the application thanks to their excellent corrosion resistance and leakage prevention characteristics, which not only benefit the company, but also the environment.

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