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pH 7.0 color at Sugar pH 8.5 / pH 7.0 Lot #PolWhole Affined 1x Affined 2x 898.01,9014433641.9 1098.81,4503292691.9 1398.61,7453773092.0 2099.11,3523533142.0.

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Presentation on theme: "pH 7.0 color at Sugar pH 8.5 / pH 7.0 Lot #PolWhole Affined 1x Affined 2x 898.01,9014433641.9 1098.81,4503292691.9 1398.61,7453773092.0 2099.11,3523533142.0."— Presentation transcript:

1 color @ pH 7.0 color at Sugar pH 8.5 / pH 7.0 Lot #PolWhole Affined 1x Affined 2x 898.01,9014433641.9 1098.81,4503292691.9 1398.61,7453773092.0 2099.11,3523533142.0 2198.91,3143382842.1 4898.22,5304493762.0 5098.32,3484233602.0 6298.62,3234353652.0 7198.52,8224853941.9 Average98.61,9764043372.0 June 2006 Laboratory affination of 2005 crop raw sugar

2 November 2006: Factory: Effect of wash time

3 0.008 gallons / second / nozzle A nine-nozzle manifold 0.07 gallons / second

4 Effect of wash volume A 3 second wash = 0.21 gallons water at 250 – 350 Lb sugar / cycle 3 seconds = 0.5 - 0.7 % on sugar 1 – 1.4 % sugar to run-off

5 need to test spray nozzles use the data to optimize centrifuge wash from the standpoint of sugar pol and sugar color vs. boiling house impact and cost

6 Sugar sample P2 Digital scale Pressure Vessel With Water or peroxide Factory Wash water Air supply P1 V2 V1 Western States 48x36” V3

7

8 Sugarcane biomass (“trash”) Collection and transportation cost Separation at the mill Conversion to energy (co-generation)* fermentable sugars / ethanol

9 Density of cane at different trash yields

10 Cost of trash delivered to mill

11 Conversion to NOW energy (co-generation) 1 t CLM = 95 kWh gross = 85 kWh net = $5 IN THE FUTURE? fermentable sugars / ethanol 1 t CLM = 39 gallons EtOH $40 - $80 (gross)

12 Cost of trash delivered to mill

13 *cost of CLM that goes to juice extraction -$8/t or -$24/acre for “conventional” cane (at 2% pol in bagasse)

14 dry cleaning of billeted cane – optimize & standardize design trash preparation - shredding, cleaning & conveying

15 Observation from trip to Brazil, April 2007

16 present retail cost in Brazil ethanol (hydrous)US$2.7/gal gasoline (25% ethanol anhydrous)US$4.5 /gal production cost of ethanolUS$1.1/gal Plans to expand sugarcane production in Brazil to substitute 5 – 10% of world gasoline will require 6 x present sugarcane production energy optimization of sugar and sugar ethanol process biomass ethanol


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