BradWilson
03-23-2023, 06:06 PM
Afternoon,
Just trying to get an idea of what folks are getting for flow rates. We have a CDL 200 Horizontal. I've done all the rinsing prior to using. Made sure the membranes were in "right" and U-cup were in the right positions. I haven't done the calculations yet because I'm still "sugaring" the membranes. Here's what I've done.
300-500 gallons of sap
First Pass sap = 2% at 40-45 degrees (some early days were 35+ degrees)
Pressure was just above 200psi
Second Pass sap = 4% +/- at 45-50 degrees
Pressure was still just above 200psi
End up with 8% or slightly less concentrate
Rinse for 10 minutes with permeate - 0% sugar
Wash with 5 gallons of 80 degree water with a PH of 12 - approximately 2 hours with solution recirculating in the pail
Rinse with remaining permeate - 180-220 gallons
The directions state to keep the Concentrate and Permeate flows equal
The best concentrate flow I've gotten so far on first past is 1 gpm and it drops off while concentrating (somewhat expect that)
CDL came and adjusted the pump pressure closer to 250psi
First Pass sap = 2% at 40-45 degrees (some early days were 35+ degrees)
Pressure was just above 200psi
Second Pass sap = 4% +/- at 45-50 degrees
Pressure was still just above 200psi
End up with 8% or slightly less concentrate
Rinse for 10 minutes with permeate - 0% sugar
Wash with 5 gallons of 80 degree water with a PH of 12 - approximately 2 hours with solution recirculating in the pail
Rinse with remaining permeate - 180-220 gallons
The directions state to keep the Concentrate and Permeate flows equal
Now the best flow rate I can get is 1.5 to 1.75gpm and drops significantly during processing. Usually my second pass (no rinse) drops below 1gpm
Next step is an acid wash. Is this normal or am I expecting too much from this thing?
Just trying to get an idea of what folks are getting for flow rates. We have a CDL 200 Horizontal. I've done all the rinsing prior to using. Made sure the membranes were in "right" and U-cup were in the right positions. I haven't done the calculations yet because I'm still "sugaring" the membranes. Here's what I've done.
300-500 gallons of sap
First Pass sap = 2% at 40-45 degrees (some early days were 35+ degrees)
Pressure was just above 200psi
Second Pass sap = 4% +/- at 45-50 degrees
Pressure was still just above 200psi
End up with 8% or slightly less concentrate
Rinse for 10 minutes with permeate - 0% sugar
Wash with 5 gallons of 80 degree water with a PH of 12 - approximately 2 hours with solution recirculating in the pail
Rinse with remaining permeate - 180-220 gallons
The directions state to keep the Concentrate and Permeate flows equal
The best concentrate flow I've gotten so far on first past is 1 gpm and it drops off while concentrating (somewhat expect that)
CDL came and adjusted the pump pressure closer to 250psi
First Pass sap = 2% at 40-45 degrees (some early days were 35+ degrees)
Pressure was just above 200psi
Second Pass sap = 4% +/- at 45-50 degrees
Pressure was still just above 200psi
End up with 8% or slightly less concentrate
Rinse for 10 minutes with permeate - 0% sugar
Wash with 5 gallons of 80 degree water with a PH of 12 - approximately 2 hours with solution recirculating in the pail
Rinse with remaining permeate - 180-220 gallons
The directions state to keep the Concentrate and Permeate flows equal
Now the best flow rate I can get is 1.5 to 1.75gpm and drops significantly during processing. Usually my second pass (no rinse) drops below 1gpm
Next step is an acid wash. Is this normal or am I expecting too much from this thing?