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                                                                   Orange Juice Blending System

Objective:         The Orange Juice Blending System is efficient, timely, and conserves the maximum amount of concentrate.

Raw Materials:  Water at normal temperature of 55 to 85 degrees F,                      

                         Orange Juice Concentrate at a Brix Content of 64%

Target:              Blended water-orange juice at a Brix of 11.5 at a rate of 90 gpm.

Proposal:           Orange Juice Concentrate is allowed to pass through a two way valve located
                         as close as possible to the Orange Juice Concentrate Storage Tank. A Positive
                         Displacement Pump that is frequency speed controlled, pumps the concentrate into a
                         blending chamber that is feeding water into a high speed centrifugal pump. The
                         centrifugal pump is running at a constant speed/or variable so as to pressurize the inlet
                         valve to the balance tank. The feed to the centrifugal pump has a pressure transmitter
                         located in the blending chamber area. If over pressurization occurs the pressure
                         transmitter will shut off the PD Pump. The blended concentrate and water mixture is
                         passed through the Advantec Sensor that measures the Brix concentration and shows the

                         current Brix reading to the PLC's, Positive Displacement Pump Speed Control PID loop.

                         If the Brix is too low, the PD Pump will speed up and if the Brix is too high, the PD Pump

                         will slow down .                    

                         The balance tank level control, throttles the inlet valve to maintain a constant flow into

                         the balance tank. The centrifugal pump should be a high speed pump running at max
                         speed to emulsify the concentrate water mixture. The Empty Concentrate Supply Line
                         Sensor will signal the PLC that the feed line to the PD Pump has become empty.  The

                         PLC will open the Two-Way Water Feed Valve flushing the feed line to the PD Pump. 

                         The Advantec Sensor will show the change in Brix concentration and alert the operator that

                         the Orange Juice Concentrate is depleted.