© Alfa Laval Slide 2 www.alfalaval.com

© Alfa Laval Slide 3 www.alfalaval.com

EcoStreamBilge water treatment

PureBallastBallast water treatment

PureVentCrankcase gas cleaning

www.alfalaval.com

A growing environmental portfolio

© Alfa Laval Slide 4 www.alfalaval.com

A known issue – but growing interest• Land-based

requirements

• Interest is also growing among government bodies and larger organizations

© Alfa Laval Slide 5 www.alfalaval.com

The other side of emissions

• Engine exhaust gas is the main part of emissions

• Though only a small part, gas from the crankcase is also of concern

© Alfa Laval Slide 6 www.alfalaval.com

Available solutions

• Air traps

• Cyclones

• Filters

“Existing solutions typically don’t live up to what they promise”

© Alfa Laval Slide 7 www.alfalaval.com

Filters the most common technologyPressure drop and gradual clogging of traditional filters

Reliability and performance

Operations and the environment

Difficulties with crank-case pressure level, stability and control

Lower filtration efficiency

Costly filter replacementOily hazardous wasteCostly onshore disposal

© Alfa Laval Slide 8 www.alfalaval.com

• Low LCC

• Releases 98% oil free-air

• Size (Only 30 l in size)

• No maintenance(Unit replaced after 2 years)

• Strong Patents

• Meet future legislations

• Better working environment

PureVent– Customer benefits

695 mm

© Alfa Laval Slide 9 www.alfalaval.com

PureVent– Working principle

Clean gasoutlet

Crankcase gas inlet

Drain oiloutlet

© Alfa Laval Slide 10 www.alfalaval.com

PureVent– Installation principles

• No environmental impact

• Actually improves engine performance

Filtered crankcase ventilation system(for liquid fuel engines)

Closed crankcase ventilation system(for gas engines)

© Alfa Laval Slide 11 www.alfalaval.com

Comments from the field

“Aboard "Freedom of the Seas" we have a Pure Vent unit installed on DG#1. Total days in service = 1 Month.

During this month in service we have collected appr. 10-15 ltr. of Lub.Oil from the oil mist inside the Crankcase ventilation pipe by means of the Pure Vent Unit. This oil will be reused when the collecting pail is full. We have evaluated the unit during this month of service and have only positive comments so far.”

© Alfa Laval Slide 12 www.alfalaval.com

Comments from the field

• The Pure Vent requires a minimum of maintenance (the total cost per year is yet to be determined).

• The Pure Vent is relatively easy to install

• The recovered oil can be reused

• Big benefits for the environment and ship's cleanliness

• Reused oil on a yearly basis for DG#1 will be in figures of 120-180 ltr.

• Reused oil on a yearly basis for six (6) engines will be in figures of 720-1080 ltr.

© Alfa Laval Slide 13 www.alfalaval.com

Technical data

• Capacity 0 – 400 Nm3/h (98% efficiency)400 – 800 Nm3/h (92% efficiency)

• Gas temperature 20 – 80°C

• Oil content in gas 0 – 1000 g/m³

• Connection, inlet 112 mm

• Connection outlet 89 mm

• Connection, drain 10 mm

• Voltage 380-480 V / 50-60 Hz

• Electric motor, power 1,5 kW

• Maintenance PureVent requires no maintenance or planned inspections during the first two years of operation.