edible lecithin processing
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Crown Iron Works CompanyEdible Lecithin Processing
Lecithin Uses
ChocolateMargarineBaking
Number One: Food Products
Lecithin Uses
16% Phosphatidycholine (PC)14% Phosphatidylethanolamine (Cephalin or PE)12% Inositol Phosphatides
Number Two: Health Supplement
Lecithin Uses
TextilesPaintsInsecticides
Number 3: Industrial Applications
Basic Lecithin Production
Oil Filtration
Special Degumming
Lecithin Processing
Filtration
Removes Hexane Insoluble (HI) materials.
Commonly performed in extracted oil stage.
Filter Aid
PrecoatTank
PrecoatPump
Oil ToDegumming
CWR CWS
FilteredOil Cooler
PolishFilters
FilteredOil Pump
FilteredOil Tank
To ExtractionPlant
Cake Pump
CakeTank
Cake Hopper
SlurryTank
CrudeOil
DosingSystem
Knife Gate
Filter AidHopper
Crude Filter 1 Crude Filter 2
Filtration
Filtration
Degumming
Removes phoshatides (gums) from oil
Normally includes bleaching agent addition
Lecithin quality considerations
Steam
Hot WaterTank
Hot WaterPump
BleachingAgent Tank
BleachingAgent Pump
Cooling WaterReturn
Degummed OilTo Storage
Cooling WaterDegummedOil Pump
OilDryer
To VacuumSystem
Steam
DegummedOil Heater
Gums Pump
Centrifuge
Shock Heater
Steam
CoolingWater
TrimCooler/Heater
Crude OilFrom
ReturnCooling Water
ExtractionOil/Water Mixer
Hydration Tank
HydratedOil Pump
Wet Degumming
Degumming
Lecithin Processing & Storage
Removes moisture
Dark color, high viscosity, AV concerns
Viscosity & acid value correction
WaterSteam
VacuumSystem
To HotwellCondensate
Steam
LecithinDryer
Gums fromDegummingCentrifuge
Gums Pump
Lecithin Cooler
LecithinDischarge Pump
To Storage
TemperedWater In
WaterTempered
Overflow
Water Tank Water PumpTempered Tempered
Gums Tank
Lecithin Drying
Lecithin Dryer
Lecithin Dryer
Lecithin Commercial Specifications
LecithinBleachedDouble-
Fluid
LecithinBleached
Fluid
LecithinNaturalFluid
626262Acetone-insolubles, min (%)111Moisture, max (%)
0.30.30.3Hexane-insolubles, max (%)323232Acid value, max
4710Color, Gardner, max (diluted)150150150Viscosity, poises, @ 77F, max
LecithinBleachedDouble-Plastic
LecithinBleached
Plastic
LecithinNaturalPlastic
656565Acetone-insolubles, min (%)111Moisture, max (%)
0.30.30.3Hexane-insolubles, max (%)303030Acid Value, max
4710Color, Gardner, max (diluted)222222Penetration, max (mm)
Courtesy AOCS “Lecithin”, edited by Bernard F. Szuhaj and Gary R. List, Copyright, 1985.
Additional Lecithin Uses and Processes
Blended lecithins
Deoiled lecithin
Fractionated lecithins
Economics of Lecithin Production
Lecithin valueLecithin value
Increased hull use valueIncreased hull use value
Lecithin Value
Operating costs plus meal opportunity costs around $0.19/lb.
Fluid lecithin market value $0.28/lb
Economic benefit of $800,000 annually for 3,000 TPD crush
“Hidden” Meal Value
In protein control situation, 1.23 lbs hulls can be added per lb of gums removed
Provides substantial benefit equal or greater than lecithin alone
Crown Iron Recent Lecithin Intallations
ADM Helena (600 tpd oil, 29 tpd lecithin). Helena, Arkansas, USAChai Tai Harbin (60 tpd oil, 6 tpd lecithin). Harbin, ChinaChai Tai Jiamusi (60 tpd oil, 6 tpd lecithin). Jiamusi, ChinaSouthseas Oil (200 tpd oil, 8 tpd lecithin). Shenzhen, ChinaCF Processing (200 tpd oil, 5 tpd lecithin). Creston, Iowa USA
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