PureDry

The fully automated oily waste treatment system

Recover oil while reducing waste handling costs. Alfa Laval PureDry is an automated system that separates waste oil into three phases: cleaned oil, water and super-dry solids.

Automated and modular

  • Processes continuously at flow rates of up to 500 l/h
  • Compact, modular system, install in any space
  • Integrates with onboard systems
  • Smart automation adapts process control to feed conditions
  • No water consumption or additional waste generated

Alfa Laval PureDry cuts your waste handling and disposal costs. The system eliminates your oily waste by removing water and concentrating solids to a super-dry sludge. Its efficiency allows you to reduce holding tank volumes, freeing up space. You can even achieve fuel savings of up to 2% if FO and LO waste is stored separately.

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How it works

The PureDry system continuously processes oily waste. It has a pumping module with a dosing unit, a heating module, separator module and control unit.

A positive displacement feed pump directs the waste oil into the system. The process liquid passes through a duplex strainer and goes into the pre-heater. A three-way changeover valve directs the waste oil to the separation stage.

The separator bowl has a disc stack, an oil paring disc and a water paring disc. The disc stack rotates at high speed so solids accumulate at the bowl's periphery. Our patented XCavator device continuously discharges the solids into a container under the separator.

The oil paring disc continuously discharges recovered oil into the holding tank. The water paring disc discharges the separated water through the water outlet. It's then transferred either to the bilge water treatment system or back to the waste oil tank. You can combine PureDry with the Alfa Laval PureBilge system for an integrated waste oil/bilge water treatment solution.

The process is continuously monitored and controlled by the EPC 60 control system for automatic operation.

Maintenance and service by exchange

Your PureDry system comes with an exchange kit that includes a new separator insert, XCavator and consumables.

The XCavator and separator insert must be replaced after a year – it's as easy as replacing a filter insert so there's minimal downtime. Simply return your used parts to your nearest Alfa Laval Service Center and request new ones.

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