www.alfalaval.com
ALFA LAVAL PANEL
• Chris Elliott Sales Engineer
Separation Service
© Alfa Laval Slide 2
www.alfalaval.com© Alfa Laval Slide 3
PROGRAMME
• Introducing Alfa Laval
• Film “1000s of G”
• Getting the Best out of Decanters/Separators
• Service – Decanter /Separators
• Separation Problems - Q and A
www.alfalaval.com© Alfa Laval Slide 4
São Paulo
Scarborough
Edmonton
MexicoCity
Houston
Johannesburg
Fontanil, Fr
Waalvijk, Nl Lund
Hamburg
Monza
YanbuThane
Kaohsiung
Perth
Kuala Lumpur
Singapore
ShenyangAshland
Hamilton
Kunshan
Shonan
Camberley
Forssa
Osaka
Sydney
Melbourne
Global Presence
Vienna
Lodz
Madrid
Buenos Aires
Lima
Santiago
GreenwoodChesapeake
Vejen
Borneo
Medan
Bangkok
Guny/MCD
Tumba
ManillaDubai
Moscow
IowaSeoul
Shenzhen
Nagoya
Jubail
Townsville
Banjarmasin
Qatar
Vizag
Established 132 years
New Zealand 89 years
100 offices world wide
107 service centres world wide
17,500 employees
www.alfalaval.com© Alfa Laval Slide 6
A vision has been formulated
Food Energy MarineIndustry
process
World leading supplier.. and
…of heat transfer and
separation equipment
Service provider
www.alfalaval.com
Let’s watch a movie
© Alfa Laval Slide 7
Thousands of Gs !!!
25 Thousands of g.mpg
www.alfalaval.com© Alfa Laval Slide 8
GENERAL SEPARATION
• Suitable Centrifuge for the duty
• Mechanically sound
• Safety devices connected and operational
• Feed and control valves operational and accessible
• Positive displacement feed pumps
• Covers and Frame leaks and cracks
• No brass valves/fittings in product feed / discharge lines
www.alfalaval.comSlide
Decanter centrifugeProduct description
1. Direct drive
System
2. Frame and
casing
3. Adjustable
Pond depth
4. Conveyor
5. Wear-resistant
Conveyor flights
6. Feed
zone
7. Solids
discharge
8. Heavy-
duty bearings
www.alfalaval.com© Alfa Laval Slide
Decanter centrifugeProduct description – Standard adjustable
pond depth
Plate dam for liquid level adjustment Optimized pond depth for each application
Click on picture to start / stop the animation
www.alfalaval.com© Alfa Laval Slide
• Stainless steel AISI 316
or higher
• Feed zone manufactured
using high-precision casting
• Extreme wear protection
• Minimum disturbance of
the separated solids
Click on picture to start the animation
Decanter centrifugeProduct description - conveyor
www.alfalaval.com© Alfa Laval Slide
Shallow Cone Decanter
Steep Cone Decanter
Decanter centrifugeProduct description – conical section
www.alfalaval.com© Alfa Laval Slide 14
DECANTERSProduct Quality
• Influence meal - fat content - Moisture
• Flow rate – solids loading – fines in centrate
• Temperature – Minimum 80ºC
• Conveyor Differential Speed – solids loading
• Conveyor Pitch
• Dam Ring Setting
• Constant Feed Rate
www.alfalaval.com
The Protein separator product range
• Products
www.alfalaval.com
AFPX 80 AFPX 100 AFPX 200 AFPX 513 AFPX 517 AFPX 617 HBPX 2000 HBPX 5000 HBPX 8001 BMP 209
AFPX 407 CRPX 510 AFPX 810 AFPX 513 AFPX 517 AFPX 617 HBPX 810 HBPX 714 PX 218 BMP 209
Pur, Conc,
Skim
Pur, Conc Pur, Conc,
Skim
Pur, Conc,
Skim
Pur, Conc,
Skim
Pur, Conc,
Skim
Conc Conc Conc Conc
Non CIP Non CIP CIP CIP CIP CIP CIP CIP CIP Non CIP
CT CT VFD VFD VFD VFD VFD VFD VFD CT
Gravity
discs
Gravity
discs
Gravity
discs
Gravity
discs
Gravity
discs
Gravity
discs
Impeller Impeller Impeller Impeller
www.alfalaval.com© Alfa Laval Slide 17
SeparatorsProduct Quality
• Influence – tallow moisture – stick water fat
• Temperature - Minimum 90ºC
• Wet Rendering pH control - below 5
• Gravity Disc
• Tallow Moisture – 0.2% to 0.5%
• Tallow In Stickwater – 1.0% to 1.5%
• Constant Feed Rate
• Discharge intervals – Not less than 4 mins.
www.alfalaval.com
PX-Bowl
Sludge Ports
Small Lock Ring
Large Lock Ring
Operating Slide
Gravity Disc
Paring
Chambers
Sliding Bowl
Bottom
Operating Water
Seal
Ring
www.alfalaval.com© Alfa Laval Slide 19
REMEMBER!!!!
• Centrifuges are machines and cannot think for
themselves
• They cannot self adjust (some latest centrifuges a
have limited capability to self adjust)
• Give the best results on the duty they have been
set up for
• Change the duty or operating conditions – make
adjustments for best results
• Regular basic maintenance for reliability
www.alfalaval.com© Alfa Laval Slide 20
MECHANICAL CONDITION
DECANTERS
• Daily – Check cover clamps tight - cover gaskets -
vibration levels on run up
• Safety! – fully stopped and isolated before
removing pipes and covers
• Conveyor wear
• Conical section and discharge bushes for wear
• Gearbox / GS coupling overloads
• Cracks in frame and covers
• Lubrication bearings – Gearbox oil level
www.alfalaval.com© Alfa Laval Slide 21
MECHANICAL CONDITION
SEPARATORS• Daily –Check oil for contamination and level –
covers tightened - valves – vibration on run up -
Bowl leaks – nylon ring – discharge intervals
• Safety! – fully stopped and isolated before
removing pipes and covers
• Monthly – Remove covers - inspect - clean Discs
• Three Monthly – Bowl Service/seals/liner check
• Six Monthly – As for Three Months plus oil change
• Yearly – Major service (as above plus bearings)
www.alfalaval.com© Alfa Laval Slide 24
Balancing weights welded to
distributor body
BOWL BALANCING
Bowl Hood with welded
balancing weights
www.alfalaval.com© Alfa Laval Slide 26
Customer Repair of SBB Sealing Surface
SLIDING BOWLS
By welding
With ”plastic filler”
www.alfalaval.com
DECANTER SERVICE MAINTENANCE PROBLEMS
NX418 MAIN BEARING FAILURE
© Alfa Laval Slide 31
Large End Piece Large End Pillow Block
www.alfalaval.com
DECANTER SERVICE MAINTENANCE PROBLEMS
NX418 MAIN BEARING FAILURE
© Alfa Laval Slide 32
Gearbox with Adapter Attached
Gearbox Driveshaft
www.alfalaval.com
DECANTER SERVICE MAINTENANCE PROBLEMS
© Alfa Laval Slide 33
Excessive Balance weight extractions
and balance hole drilled into threads
Large End bearing damaged
due to damaged lid seal
Conveyor full blocked due to trip out
mechanism not interlocked with feed pump