DEVICE AND METHOD FOR MONITORING BIOCIDE DOSING IN A MACHINE

• US 20150000853A1
• Filed: 01/21/2013
• Published: 01/01/2015
• Est. Priority Date: 01/20/2012
• Status: Active Grant

• Current Assignee: Kemira Oyj
• Original Assignee: Kemira Oyj
• Inventors: Kolari, Marko, Suhonen, Tuija, Sirvio, Jukka-pekka
• Granted Patent: US 9,341,560 B2
• Time in Patent Office: Days
• US Class Current: 162/252
• CPC Class Codes: D21H 21/04 Slime-control agents
• CPC Class Codes: D21H 21/36 Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
• CPC Class Codes: D21H 23/20 Apparatus therefor
• CPC Class Codes: G01N 17/04 Corrosion probes
• CPC Class Codes: G01N 27/041 of a solid body

Abstract

Embodiments of the present disclosure include methods to control the quantity of vapor phase corrosion, devices, and the like.

Claims

1. A method for monitoring the vapor phase corrosion in a paper or board machine, comprising:

obtaining information regarding the rate of vapor phase corrosion over a time period; and

using the information to determine how to adjust the dosing of an oxidizing biocide in a paper or board making process.

2. The method of claim 1, wherein the information is obtained using a modified electrical resistance (ER) probe equipped with an ER probe and a cooling unit disposed around the ER probe.

3. The method of claim 2, wherein the information is obtained using a temperature measurement sensor to measure the temperature of one or more of the following:

the ER probe, the air around the ER probe, or the air outside of the ER probe.

4. The method of claim 2, further comprising:

adjusting the amount of the oxidizing biocide based on the information obtained regarding vapor phase corrosion.

5. The method of claim 1, further comprising:

adjusting the amount of the oxidizing biocide based on the information obtained regarding vapor phase corrosion.

6. The method of claim 2, wherein obtaining includes measuring an electrical resistance of an element in the modified ER probe.

7. The method of claim 6, wherein an increase in the electrical resistance of the element over a time period indicates that the element was undergone reduction, and wherein a rate of corrosion is determined from the reduction of the element over the time period.

8. The method of claim 3, further comprising:

controlling the temperature difference between the air outside of the modified ER probe and the surface of the ER probe.

9. A method of claim 1, wherein obtaining information regarding the rate of vapor phase corrosion over a time period is by a computing device;

and

using the information to determine how to adjust the dosing of an oxidizing biocide in a paper or board making process is by a computing device.

10. The method of claim 9, further comprising:

adjusting, by the computing device, the amount of the oxidizing biocide based on the information obtained regarding vapor phase corrosion.

11. The method of claim 10, wherein obtaining includes measuring, by the computing device, an electrical resistance of an element in a modified ER probe.

12. The method of claim 10, further comprising:

controlling, by a computing device, the temperature difference between the air outside of a modified ER probe and a surface of an ER probe.

13. A modified electrical resistance (ER) device, comprising:

an electrical resistance (ER) probe and a cooling unit.

14. The modified electrical resistance (ER) probe of claim 13, wherein the cooling device includes a structure disposed around the ER probe, wherein a cavity is formed between the structure and the ER probe, and wherein the structure includes one or more openings.

15. The modified electrical resistance (ER) probe of claim 14, wherein the cooling device is configured to flow a cooling medium in the cavity.

16. The modified electrical resistance (ER) probe of claim 15, wherein the cooling device is directly attached to the ER probe to control the temperature of the ER probe.

17. The modified electrical resistance (ER) probe of claim 15, wherein the cooling device is not directly attached to the ER probe, and the cooling medium is used to control the temperature of the ER probe.

18. The modified electrical resistance (ER) probe of claim 13, further comprising a temperature measurement sensor to measure the temperature of one or more of the following:

the ER probe, the air around the ER probe, or the air outside of the ER probe.

19. A system, comprising:

at least one computing device; and

a method application executable in the at least one computing device, the method application comprising;

logic that obtains information regarding the rate of vapor phase corrosion over a time period; and

logic that uses the information to determine how to adjust the dosing of an oxidizing biocide in a paper or board making process.

20. The system of claim 19, further comprising:

logic that adjusts the amount of the oxidizing biocide based on the information obtained regarding vapor phase corrosion.

21. The system of claim 19, wherein obtaining includes logic that measures an electrical resistance of an element in a modified ER probe.

22. The system of claim 19, further comprising:

logic that controls the temperature difference between the air outside of a modified ER probe and a surface of an ER probe.