Continuous Tomato Paste Standardization
Process Description
The concentrated product is force-fed into a Waukesha positive displacement timing pump from the bag unloading hopper which is designed with a twin screw auger. The timing pump has a variable frequency drive which serves to control the paste dilution speed. From this pump, product flows through a centrifugal blending pump, which runs at a higher rate than the timing pump. This pump enhances the dilution efficiency of the paste and water prior to sending the diluted solution through the inline mixer. The tomato paste standardization tank, with scraper agitator and dual counter rotating agitator, serves as the standardized product tank. Product flows from the product tank to the batching system via the PD batch feed pump. The water timing pump, in conjunction with the product timing pump, standardized product circulation pump, Brix meter and associated valves closely controls product consistency. These items compose a ratio control loop capable of standardizing the paste from 31 % total solids to as low as 5% total solids.
Process System Features
- Maximizes solids recovery without use of bag rinse water
- Reduces variability of standardized product through elimination of rinse water
- Dillution capacity from 31% tomato paste to 5% single strength juice
- Optimum control of product consistency using in-line Brix meter, continuous blending and recirculation verification.
- Programmable logic control for repeatable product consistency
