Application Bulletin
LAKOS Decreases Waste and Increases Efficiency In Sugar Cane Mills
EXAMPLE #1
Application:
System Identification: Pre-filtration to clarification process and protection of downstream pumps, impellers, and heat exchangers
LAKOS Dual Stage Stainless Steel Super Separators (Two-Stage JPX System) Solids: Liquid: Problem/Challenge:
and purge handling equipment
Sand, grit, and very fine sugar cane bagasse
Raw sugar cane juice
Sugar cane juice with high levels of extraneous matter (soil, dirt, grit)
impacts the capacity and efficiency of milling, processing and boiler
operations.
When sugar cane is cut and taken to the sugar mill for
processing, different quantities of dirt, solids and grit are loaded
with the stalks, depending on the harvesting mechanization and
weather conditions. Despite the pre-crush washing process,
large amounts of solids are carried into the juice extraction
process.
Juice clarification is an important step in sugar production.
Heavy solids contamination -- sand, grit, and very fine sugar
cane bagasse -- must be separated from the raw juice in order to
ensure the best quality final product. Typically, a strainer (DSM,
rotational or vibration) is used after the crushing and prior to the
clarification process. These strainers use various screen mesh
(0.2mm to 0.7mm). A LAKOS high performance dual stage,
Super Separator configruation and purge handling equipment
is installed between the strainer and the clarifier, removing the
bulk of the solids from the raw juice prior to the juice reaching
the clarification process. The clarification process is used
to remove small impurities that may be soluble, colloidal or
insoluble.
Pre-Filtration to Clarifier in Argentina
Effective solids handling of the removed solids from the LAKOS system allows sugar mills to reclaim
valuable sugar cane juice from the solids and limit valuable juice loss, saving money.
(Continued on reverse)
AB-219 (11/09)
The use of a LAKOS dual stage Super Separator in the pre-treatment stages of sugar cane milling processes
provides the following benefits:
• Reduce the solids load of separable solids 98% of 44 micron on the clarifiers
• Allow the clarifiers to work more efficiently on smaller impurities, soluble and colloidal materials.
LAKOS Decreases Waste and Increases Efficiency In Sugar Cane Mills
EXAMPLE #2
Application: Solids: Liquid: LAKOS Solution: LAKOS installed in the Clean-In-Place system
Scale and chemical fouling
CIP liquid cleaning solution
LAKOS Stainless Steel Separators and purge handling equipment.
Heat exchangers are used for pre-heating the juice before being fed to the first unit of the evaporation line. The
evaporation process leads to the formation of mineral and silt deposits, leading to fouling on the inner surface
of the evaporator tubes. Mineral deposits inside the tubes act as insulation, thus causing higher heat transfer
resistance. As a consequence of the formation of solid deposits on heating surfaces, evaporative rates decrease
with time. It is important in sugar processing environments to keep the heat transfer capability as high as
possible. The common practice to mitigate fouling is to implement automatic clean-in-place (CIP) operations.
LAKOS Stainless Steel Separators help
to keep unwanted solids from clogging
CIP Systems. The need for continuous
operation (with little or no downtime)
is critical for CIP operating efficiency
… and LAKOS Separators meet
that need with continuous operation,
automatic solids flushing, and a low
and steady pressure loss.
Sugar Mill in Argentina
Clean-In-Place System
Closeup View
Typical Sugar Mill Filtration Installations
LAKOS Separator for Elimination of Sand From “Sour Water”
(raw sugar
beet
LAKOS SEPARATOR FOR ELIMINATION
OF SAND FROM
“SOURjuice)
WATER” - ( raw sugar beet juice )
BEET PULP PRESS
LAKOS SEPARATOR
DIFFUSER
HEATER
PRESS WATER
PUMP
Sand Removal from Raw Sugar Juice
To the sugar process
By-pass
The separator
removes sand
from raw sugar
beet juice
Purge Tank
LAKOS
SEPARATOR:
LAX-0509-B/PU
SAND REMOVAL
FROM
RAW SUGAR JUICE
Sand from the purge is
evacuated to a decantation
tank outside the factory, by
special sludge pump.
Pumps
Beet pulp press
Scrubber Wash System
PLANT EFFLUENT WATER
SCRUBBER
TOWER
SMOKE
STACK
PUMP
FROM INCINERATOR
THRU VENTURI
B
A
LAX
LFD
LAKOS
Super
Separator
Configuration
ASH THICKENER
PURGE LIQUID
CONCENTRATOR
TO LAND FILL/
RECLAMATION
ASH SLURRY
PUMP
DRAIN BACK TO
FILTRATION
DEWATERED SLUDGE
SAND SEPARATING
SCREW CONVEYOR
Sugar Cane Wash Filtration and Solids Purging System
SUGAR CAN WASH FILTRATION AND SOLIDS PURGING SYSTEM
BACK TO SPRAY WASH SYSTEM
DISCHARGE MANIFOLD
FROM THE SCALE/SEDIMENTATION
TANKS
INTAKE MANIFOLD
A
B
C
LAX 2002
LAX 2002
LFD 2002
A
B
C
D
D
LFD 2002
PINCH VALVES
DRAIN WATER
BACK TO INTAKE
SAND-SEPARATOR
SCREW CONVEYOR
PURGE SOLIDS
LAKOS
Separators
Filtering Sugar Juice From Crushers

CRUSHERS
CRUSHED FIBERS SENT TO BLACKSTRAPPING
PROCESS TO RECOVER BARRELL SYRUP OR MOLASSES

STRAINER

LAX
502
PUMP
LFD
502

LAKOS Super
Separator
Configuration
LIME. CANE JUICE AND
HOT WATER
B
A
TO CLARIFIER
HEATER
CONCENTRATOR
PINCH
VALVE
PURGE DIFFUSER
DRAINED LIQUID DECANTED AND
SENT BACK TO BLACKSTRAPPING/
BARREL SYRUP (MOLASSES) RECOVERY
OR BACK TO CRUSHERS
HOPPER

PURGED SOLIDS GOES TO DIGESTER TANKS
FOR FURTHER RECOVERY OF METHANE GASE
OR FOR SOIL CONDITIONING ON FARMLANDS
Sugar Processing
Mills Raw
SUGAR PROCESSING
MILLS Sugar Cane/Beets
RAW SUGAR CANE/BEETS
SPRAY WASH STATION
FIBERS TO
INCINERATION/
POWER CO-GEN
CRUSHER STATION
SHREDDER
STATION
DIGESTER
TANKS
CANE JUICE
CANE
KNIFE
CANE
LEVELER
FILTERED WATER
BACK TO PROCESS
FILTER
PUMP
A
EVAPORATOR
LIME JUICE &
HOT WATER
CLARIFIER
PUMP
TO SLUDGE STORAGE FOR
SOIL CONDITIONING / DIGESTER TANKS
CLEAR JUICE
SYRUP
VACUUM
PAN SYRUP &
SUGAR
CRYSTALS
B
CENTRIFUGE
HEATER
TO SLUDGE STORAGE
FOR SOIL CONDITIONING/
DIGESTER TANKS
C
RAW SUGAR
PUMP
TO REFINERY
STORED SUGAR
1365 N. Clovis Avenue • Fresno, California 93727 USA
Telephone: (559) 255-1601 • Fax: (559) 255-8093
Toll-Free: (800) 344-7205 (USA, Canada & Mexico)
www.lakos.com • E-mail: [email protected]
A
B
C
LAKOS
Separators