Title:
滴定器制御を備えたケミカルブレンドシステム
Document Type and Number:
Japanese Patent JP4021936
Kind Code:
B2
Abstract:
A chemical blending system for blending two or more constituent chemicals to a desired concentration. One embodiment of the system includes a mix tank, a recirculation line having an inlet and an outlet in the tank, and a pump in the recirculation line for recirculating and mixing the blended chemical. A source of diluent is fluidly coupled to the mix tank through a diluent inlet and supply line. A source of concentrated chemical is fluidly coupled to the recirculation line through a concentrated chemical inlet, supply line, and an adding valve located in the recirculation line between the inlet and pump. A conductivity-type sensor in the recirculation line provides continuous measurements of the blended chemical concentration. A titration analyzer is coupled to the recirculation line to provide periodic blended chemical concentration measurements. A programmable logic control system including a processor and associated memory is coupled to the adding valve, conductivity-type sensor and titration analyzer. A blending control program and process control values are stored in the memory. The processor executes the blending control program and controls the concentrate adding valve as a function of the concentration measurements provided by the conductivity-type sensor and titration analyzer to blend the chemical to the desired concentration.
Inventors:
Odogati Kevin Tea.
Remke Travis A.
Grant Donald C.
Remke Travis A.
Grant Donald C.
Application Number:
JP52578096A
Publication Date:
December 12, 2007
Filing Date:
February 20, 1996
Export Citation:
Assignee:
The BOC Group Incorporated
International Classes:
G05D11/13; B01F15/04
Domestic Patent References:
| JP5052750A |
Foreign References:
| US5246594 |
Attorney, Agent or Firm:
Fujita Akira