Two-stage chemical mixing system

Details Two-stage chemical mixing system Two-stage chemical mixing system

1997-01-23

1999-02-23

McMahon, Timothy

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Responsive to liquid level

366132, 3661521, 3661522, 3661531, 3661621, 422110, 422111, 422256, B01F 1504

Patent

active

058740490

ABSTRACT:
A chemical mixing system for mixing ingredients at desired concentrations concentration within a qualification range. Batches of the mixed chemical are mixed in a relatively small mix vessel and transferred to a relatively large mix drum. The concentration of the chemical within the mix drum is measured by a concentration monitor. If the measured concentration of the chemical in the mix drum is within the qualification range, the batches of chemical in the mix vessel are mixed to the desired concentration. If the measured concentration of the chemical in the mix drum is below the qualification range, the batches of chemical in the mix vessel are mixed to a high concentration which is greater than the desired concentration. If the measured concentration of the chemical in the mix drum is above the qualification range, the batches of chemical in the mix vessel are mixed to a low concentration which is less than the desired concentration. Batch averaging is thereby performed to maintain the concentration of chemical in the mix drum within the desired qualification range.

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