US2014097095A1PendingUtilityA1

Generation of variable concentrations of chlorine dioxide

43
Individually held — no corporate assignee on recordPriority: Oct 5, 2012Filed: Oct 5, 2012Published: Apr 10, 2014
Est. expiryOct 5, 2032(~6.1 yrs left)· nominal 20-yr term from priority
Inventors:James Moser
C02F 2209/29C02F 2201/4614C02F 2209/005C02F 2209/003C25B 15/02C02F 2209/006C25B 1/26C02F 2201/4618C02F 2201/46135C02F 1/4674
43
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Claims

Abstract

A chlorine dioxide generator is provided. The generator includes a controller, a pump electrically connected to the controller and configured to pump reactant feedstock, a power supply electrically connected to the controller, and an electrochemical cell electrically connected to the power supply and configured to receive reactant feedstock from the pump and produce chlorine dioxide. The controller is configured to receive user chlorine dioxide concentration input data and provide control signals to at least one of the pump and power supply to variably control a concentration of chlorine dioxide provided by the electrochemical cell.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A chlorine dioxide generator, comprising:
 a controller;   a pump electrically connected to the controller, the pump configured to pump reactant feedstock;   a power supply electrically connected to the controller; and   an electrochemical cell electrically connected to the power supply and configured to receive reactant feedstock from the pump and produce chlorine dioxide;   wherein the controller is configured to receive user chlorine dioxide concentration input data and provide control signals to at least one of the pump and power supply to variably control a concentration of chlorine dioxide provided by the electrochemical cell.   
     
     
         2 . The chlorine dioxide generator of  claim 1 , wherein the chlorine dioxide is provided to a process, the chlorine dioxide generator further comprising a sensor configured to sense a quantity of chlorine dioxide present in the process. 
     
     
         3 . The chlorine dioxide generator of  claim 2 , wherein signals from the sensor are fed back to the controller, and the controller is configured to provide control signals based on the signals from the sensor. 
     
     
         4 . The chlorine dioxide generator of  claim 1 , further comprising a storage unit configured to receive chlorine dioxide from the electrochemical cell and maintain the chlorine dioxide. 
     
     
         5 . The chlorine dioxide generator of  claim 4 , wherein the chlorine dioxide is provided to a process, the chlorine dioxide generator further comprising an alternate sensor fluidly positioned between the storage unit and the process. 
     
     
         6 . The chlorine dioxide generator of  claim 5 , wherein signals from the alternate sensor are fed back to the controller, and the controller is configured to provide control signals based on the signals from the alternate sensor. 
     
     
         7 . The chlorine dioxide generator of  claim 6 , further comprising a sensor configured to sense a quantity of chlorine dioxide present in the process. 
     
     
         8 . The chlorine dioxide generator of  claim 7 , wherein signals from the sensor are fed back to the controller, and the controller is configured to provide control signals based on the signals from the sensor. 
     
     
         9 . The chlorine dioxide generator of  claim 1 , further comprising an operator interface terminal configured to receive concentration data and provide signals reflecting the concentration data to the controller. 
     
     
         10 . The chlorine dioxide generator of  claim 1 , wherein the controller is configured to selectively apply variable current to the pump. 
     
     
         11 . The chlorine dioxide generator of  claim 10 , wherein the controller is further configured to selectively apply variable voltage to the power supply, resulting in the power supply providing variable current to the electrochemical cell. 
     
     
         12 . A chlorine dioxide generator, comprising:
 a pump configured to pump reactant feedstock;   a power supply;   an electrochemical cell electrically connected to the power supply and configured to receive reactant feedstock from the pump and produce chlorine dioxide; and   a controller electrically connected to the pump and the power supply, the controller configured to receive user chlorine dioxide concentration input data and provide at least one of:
 variable voltage to the power supply; 
 variable current amplitude to the pump; and 
 variable current timing of current to the pump; 
   to vary a concentration of chlorine dioxide provided by the electrochemical cell.   
     
     
         13 . The chlorine dioxide generator of  claim 12 , wherein the chlorine dioxide is provided to a process, the chlorine dioxide generator further comprising a sensor configured to sense a quantity of chlorine dioxide present in the process. 
     
     
         14 . The chlorine dioxide generator of  claim 13 , wherein signals from the sensor are fed back to the controller, and the controller is configured to provide control signals based on the signals from the sensor. 
     
     
         15 . The chlorine dioxide generator of  claim 12 , further comprising a storage unit configured to receive chlorine dioxide from the electrochemical cell and maintain the chlorine dioxide. 
     
     
         16 . The chlorine dioxide generator of  claim 15 , wherein the chlorine dioxide is provided to a process, the chlorine dioxide generator further comprising an alternate sensor fluidly positioned between the storage unit and the process. 
     
     
         17 . The chlorine dioxide generator of  claim 16 , wherein signals from the alternate sensor are fed back to the controller, and the controller is configured to provide control signals based on the signals from the alternate sensor. 
     
     
         18 . The chlorine dioxide generator of  claim 17 , further comprising a sensor configured to sense a quantity of chlorine dioxide present in the process. 
     
     
         19 . The chlorine dioxide generator of  claim 18 , wherein signals from the sensor are fed back to the controller, and the controller is configured to provide control signals based on the signals from the sensor. 
     
     
         20 . The chlorine dioxide generator of  claim 12 , further comprising an operator interface terminal configured to receive concentration data and provide signals reflecting the concentration data to the controller. 
     
     
         21 . The chlorine dioxide generator of  claim 12 , wherein the controller is configured to selectively apply variable current to the pump. 
     
     
         22 . The chlorine dioxide generator of  claim 21 , wherein the controller is further configured to selectively apply variable voltage to the power supply, resulting in the power supply providing variable current to the electrochemical cell. 
     
     
         23 . A method for producing chlorine dioxide, comprising:
 providing a desired concentration value;   based on the desired concentration value, determining an electrical quantity to be provided to a device connected to an electrochemical cell; and   applying the electrical quantity to the device connected to the electrochemical cell, thereby altering performance of the device and altering the concentration of chlorine dioxide provided by the electrochemical cell.   
     
     
         24 . The method of  claim 23 , further comprising:
 distributing chlorine dioxide provided by the electrochemical cell to a process; and   monitoring concentration of chlorine dioxide in the processing device and employing the concentration of chlorine dioxide in the process in determining the electrical quantity.   
     
     
         25 . The method of  claim 23 , wherein the electrical quantity comprises electrical current and the device comprises a pump configured to pump reactant feedstock to the electrochemical cell. 
     
     
         26 . The method of  claim 23 , wherein the electrical quantity comprises a voltage and the device comprises a power supply configured to supply current to the electrochemical cell.

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