SYSTEMS AND METHODS USEFUL IN CONTROLLING OPERATIONS OF METAL ELECTROLYSIS CELLS

• US 20070295615A1
• Filed: 06/22/2007
• Published: 12/27/2007
• Est. Priority Date: 06/27/2006
• Status: Abandoned Application

• Current Assignee: Alcoa Incorporated (Howmet Aerospace, Inc.)
• Original Assignee: Alcoa Incorporated (Howmet Aerospace, Inc.)
• Inventors: Wang, Xiangwen, Hosler, Robert, Tarcy, Gary
• Application Number:
  US11/767,080
• Publication Number:
  US 20070295615A1
• Time in Patent Office: Days
• US Class Current: 205/775
• CPC Class Codes: C25C 3/20 Automatic control or regulation of cells controlling or regulating in general G05

Abstract

An analysis system for determining one or more operating conditions of a metal electrolysis cell and for facilitating a response is provided. The analysis system comprises a bath probe electrically interconnected to a portable computing device. The bath probe generates signals associated with temperature measurements produced from thermal communication with an electrolysis cell bath. The portable computing device may receive these signals and generate data based thereon. The data may be transformed into operating condition information relating to the electrolysis cell.

Claims

1. A system for determining one or more operating conditions of a metal electrolysis cell and facilitating a response relative thereto, the system comprising:

a bath probe comprising a probe tip and wires connected to the probe tip; and

a portable computing device electrically interconnectable to the bath probe via the wires;

wherein the bath probe is operable to generate signals associated with temperature measurements produced from thermal communication with a bath of the electrolysis cell, wherein the portable computing device is operable to receive the signals and generate data based on the received signals, wherein the portable computing device is further operable to transform the data into operating condition information associated with at least one operating condition of the electrolysis cell.

2. The system of claim 1, wherein the portable computing device is operable to transmit at least one of the data and the operating condition information to a host computer electrically interconnectable to the portable computing device.

3. The system of claim 2, wherein the operating condition information is bath superheat.

4. The system of claim 2, wherein the operating condition information comprises at least two of bath temperature, bath superheat, a bath constituent concentration and a bath constituent ratio.

5. The system of claim 4, wherein the metal electrolysis cell is an aluminum electrolysis cell, wherein the bath constituent concentration is the concentration of alumina and wherein the bath constituent ratio is the ratio of sodium fluoride to aluminum fluoride.

6. The system of claim 2, wherein the host computer is operable to display a suggested course of action based on the operating condition information.

7. The system of claim 1, wherein the portable computing device is operable to display at least one of the data and the operating condition information.

8. The system of claim 1, wherein the portable computing device is electrically interconnectable to the bath probe via (i) a first set of wires interconnectable to the portable computing device, (ii) a second set of wires interconnectable to the bath probe and (iii) a wire connector interconnectable to the first and second set of wires.

9. The system of claim 8, wherein the bath probe comprises:

a probe tip comprising a temperature sensor, wherein the temperature sensor is electrically interconnectable to the portable computing device via the first set and the second set of wires and the wire connector.

10. A method for operating a metal electrolysis cell, the method comprising:

generating signals relating to at least one operating condition of the electrolysis cell;

receiving the signals at portable computing device;

creating data associated with the signals; and

outputting operating condition information corresponding with the data to facilitate a control response.

11. The method of claim 10, wherein the operating condition information corresponds with the at least one operating condition and wherein the at least one operating condition is at least one of bath temperature, bath superheat, bath metal oxide concentration, and bath constituent ratio.

12. The method of claim 10, wherein the outputting step comprises:

transferring at least one of the data and the operating condition information to a host computer.

13. The method of claim 10, wherein the outputting step comprises:

displaying the operating condition information on a display associated with the portable computing device.

14. The method of claim 10, further comprising:

placing a bath probe in thermal communication with a bath of the electrolysis cell;

wherein the generating step comprises;

removing the bath probe from substantial thermal communication with the bath for a predetermined temperature range.

16. The method of claim 10, wherein the creating step occurs at a first location and wherein the outputting step occurs at a second location remote from the first location.

17. The method of claim 16, wherein the first location is the operating room of the electrolysis cell and wherein the second location is located outside the operating room.

18. The method of claim 10, wherein the outputting step comprises:

displaying a recommended control response on a display associated with at least one of the portable computing device and a host computer.

19. The method of claim 10, further comprising:

automatically completing an action in response to the outputting step.

20. The method of claim 19, wherein the automatically completing step comprises:

adjusting one or more of a voltage output and a constituent feedrate associated with the electrolysis cell.

15. The method of claim 15, wherein the placing step occurs before the outputting step and wherein the duration between the start of the placing step and the end of the outputting step is not greater than one hour.