15 % Solids @
2.5 GPM
Mass meter to
regulate whole
stillage to
centrifuge
#A
Centrisys
decanter
centrifuge
adjustable
bowl & scroll
speed
50 GPM
maximum
capacity.
Thin stillage
exits from weir
of centrifuge
4% solids
Whole stillage from
beer column bottoms
From Page 6
Operation-data logging of the decanting
centrifuge, drying, and evaporation
equipment is preformed by a
Siemens PCS 7 system.
65 % moisture wet
cake, 50 - 300 #/hr.
Whole Stillage
Tank
100 Gallon
Thin Stillage
Tank
100 Gallon
Wet cake discharge rates and weight
totalizer data from the centrifuge is
integrated by a weigh belt.
Wet cake to co-product separation conveyor
To Page 8 #A
Mass Meter
Thin stillage to evaporator feed tank
To Page 9 #A
CO PRODUCT DE-WATERING AND DRYING
PAGE
7
NATIONAL CORN TO ETHANOL RESEARCH CENTER
APRIL 16, 13
BY TERRY LASH
8 - 12%
Moisture
NCERC uses weigh belt feeders to
control the rate of the previously dried
product to be recycled & mixed with
the co-product wet – cake before it
enters the dryers.
8 % Moisture
320 pounds/hr.
8 - 12% Moisture product to storage
8 % Moisture
50 pounds/hr.
8 - 12% Moisture
1000 pounds/hr.
63 % Moisture
Separation screw divides wet – cake
flow to either the drum dryer or the
ring dryer or both at once.
T
o
#A
From Page 7 Wet Cake
Weigh Belt
P
a
g
e
The weigh belt scale is used to
measure wet – cake feed rate to the
ring dryer.
8
65 % Moisture
#B
From Page 9 Syrup Pump
The paddle mixer receives dried
co-product from the recycle
control weigh feeder & syrup
pump and blends with wet cake
from the centrifuge.
Davenport drum dryer receives 1800
pounds/hr.
30% moisture co-product
175-325 F. drying temp. produces
5 – 15 % moisture co-product.
8 % Moisture
250 pounds/hr.
65 % Moisture
65 % Moisture
30 % Moisture
The Barr Rosin steam
heated ring dryer can
process 100 pounds/hr.
of 65 % moisture wet –
cake at lower
temperatures than the
drum dryer.
Dried co-products are
weighed as they are filling the
bulk storage bags.
#C
From Page 9 Syrup Pump
CO PRODUCT DRYING EQUIPMENT
PAGE
8
NATIONAL CORN TO ETHANOL RESEARCH CENTER
APRIL 16, 13
BY TERRY LASH
PROCESS
WATER OR
BACKSET HOLD
TANK
To Page 2
VAPOR
CONDENSER
“BACKSET”
To Page 8 #B
35 % solids syrup @ 1 – 2½
pounds/min. Metered by
mass to drum dryer mixer.
VAPOR
SEPERATOR
Backset To Slurry
Makeup
Syrup Flow (Brown)
To Page 8 #C
35 % solids syrup @ .5 – 1½
pounds/min. metered by
mass to ring dryer mixer.
Alfa Lavel small volume (75 Gallon)
uses a plate & frame heat
exchanger.
Didert large volume evaporator
(750 Gallon) uses a shell & tube
heat exchanger.
#A
From Page 7
Thin Stillage
THIN STILLAGE
HOLDING
HEATED
SYRUP
TANK
Evaporator Feed Tank
STILLAGE EVAPORATION & SYRUP PRODUCTION
Thin Stillage Flow (Yellow)
PAGE
9
NATIONAL CORN TO ETHANOL RESEARCH CENTER
APRIL 16, 13
BY TERRY LASH
The NCERC fermentation lab is
able to propagate cultures from
plates to shake flasks to transfer
to the 5 – 30 liter cultivation
vessels.
Two 5 liter fully automated
cultivation/fermentation systems.
30 liter steam in place cultivation/
fermentation system with distillation
capabilities.
300 & 3000 LITER CIP/SIP CULTIVATION/FERMENTATION SUITE
400 – 1200 liter steam in place cultivation/fermentation system.
P-66
P-65
Pharma grade cell cultivation/biofermentation equipment is highly
instrumented & automated for precise control.
Fermenter and transfer system piping utilize a
sterilization validation system to eliminate
contamination. All process control data
captured by data historian.
40 – 120 liter steam in place cultivation/fermentation
system. Dual PH/DO, load cells, mass air flow sparge
control, cell growth, off gas concentration
FOUR 22,000 LITER CLEAN IN PLACE PRODUCTION FERMENTERS
CULTIVATION/FERMENTATION SUITE
PAGE
5-2
NATIONAL CORN TO ETHANOL RESEARCH CENTER
APRIL 16, 13
BY TERRY LASH
OFF GAS MEASUREMENT
SYSTEMS
Additional 250, 500, 1300 & 5000
liter vessels available for hydration,
fermentation and cultivation.
30 liter cultivation unit equipped
with reflux column to remove
products from a finished
fermentation.
CULTIVATION/FERMENTATION SUITE
PAGE
5-2
NATIONAL CORN TO ETHANOL RESEARCH CENTER
APRIL 16, 13
BY TERRY LASH