폐기물 처리 비용을 줄이면서 오일을 회수하십시오. 알파라발의 PureDry는 폐유를 3 단계 (세정 된 오일, 물 및 초 건조 고체)로 분리하는 자동화 시스템입니다.

污泥处理设备PureDry污泥处理离心机-oil cleaning system

자동화 모듈

  • 최대 300l / h의 유량으로 연속 처리
  • 컴팩트 한 모듈 식 시스템으로 모든 공간에 설치
  • 온보드 시스템과 통합
  • 공정 조건을 공급 조건에 맞게 조정하는 스마트 자동화
  • 물 소비 또는 추가 폐기물 발생 없음
알파라발 PureDry는 폐기물 처리 및 폐기 비용을 줄입니다. 이 시스템은 물을 제거하고 고형 슬러지에 고형물을 농축시켜 유성 폐기물을 제거합니다. 이를 통해 탱크 용량을 줄이고 공간을 효율적으로 확보 할 수있게합니다. FO와 LO 폐기물을 별도로 보관하면 최대 0.4 %의 연료 절감 효과를 얻을 수 있습니다.

Substantial savings on waste oil handling

PureDry cuts the cost of waste oil and sludge handling by removing water from the waste oil and concentrating the solids to super-dry sludge (typically 15-25 kg/24 h), thus eliminating oily waste and related disposal costs. 

The efficiency of the system in terms of drying up oily waste streams means holding tank volumes for waste oil and waste water can be reduced, thus freeing up valuable space on board a ship or in a power plant.

Furthermore, waste fuel recovery is possible when fuel oil sludge are separated from lube oil sludge (separate sludge tanks) – fuel saving typically up to 0,4 % is possible.

Reliable operation

The uniquely simple separator design ensures easy, reliable operation. The system separates the waste oil into three phases: cleaned oil, super-dry solids which can be disposed of as dry waste, and water clean enough to be sent to the bilge system. Smart automation adapts the process control to varying feed conditions. There is no water consumption and no additional waste generated.

Compact modular design

The compact PureDry system comprises a pumping module with emulsifier dosing unit, a heating module, a separation module and a control unit. Its modular design provides flexibility for installation in any convenient location and makes it easy to integrate with existing onboard systems.

Integrated waste oil/bilge water treatment concept

In combination with Alfa Laval’s PureBilge system, PureDry forms a complete, integrated sludge/bilge water treatment solution that can dry up all oily waste streams on the ship or in the power plant. PureDry separates out the oil, concentrates the solids to super-dry sludge which can be landed as dry waste, and sends the water to the bilge system. PureBilge then takes care of the fine polishing of the oily water prior to discharge overboard.

알파라발 적응형 연료라인

알파라발 적응형 연료 라인은 새로운 규정을 준수하면서 엔진 보호 및 에너지 효율을 보장합니다.

water flare

사용 방법


The PureDry oily waste treatment system continuously processes sludge, separating oil, water and solids. It is comprised of a pumping module with dosing unit, a heating module, a separator module, and a control unit.

Separator function

The separator bowl containing a disc stack rotates at high speed and solids from the waste oil feed accumulate at the periphery. From the periphery, the solids are continuously discharged by a patented spiral-shaped device called the XCavator into a container under the separator. The amount of solids accumulated in the container is continuously monitored by means of a load cell.  

An oil paring disc, which forms part of the separator bowl, continuously discharges recovered oil from the separator through the oil outlet under pressure. The oil is directed to the oil recovery holding tank. A built-in water paring disc continuously discharges separated water through the water outlet. Although sealing water is added to the bowl during start-up, no more water needs to be added, thus no additional waste is created by the process itself.

Process operating principle

The system operates at flow rates of up to 500 liters(typically 150 to 200 liters) per hour. A positive displacement feed pump operating at a constant flow directs the waste oil to the system. The process liquid then passes through a duplex strainer, which traps large particles, into a preheater. For optimum separation efficiency, the heater raises the temperature of the unprocessed liquid to the desired feed temperature of 95°C.

A three-way changeover valve directs the waste oil to the separation stage if all process conditions, such as feed temperature and feed pressure are met. During an alarm situation, loss of operating pressure, power failure or when any preset condition is not met, the valve recirculates the fluid back to the waste oil tank.

The water is then transferred either to the bilge water treatment system for further processing to ensure that it meets IMO standards for discharge overboard, or back to the waste oil tank, according to the process conditions.

To enhance performance in the presence of stable emulsions, a demulsifier dosing unit is included. The unit is connected before the pumping stage in order to mix Alfa Laval demulsifier directly into the feed.

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

PureDry cut