Method for treating agricultural products for harmful infestations

• US 6,454,996 B1
• Filed: 02/24/1999
• Issued: 09/24/2002
• Est. Priority Date: 02/24/1999
• Status: Expired due to Fees

• Current Assignee: Lin Cubing, Inc.
• Original Assignee: Lin Cubing, Inc.
• Inventors: Lin, James C., Toyoshima, Hidemasa
• Primary Examiner(s): Warden, Sr., Robert J.
• Assistant Examiner(s): Conley, Sean E.
• Application Number:
  US09/257,429
• Time in Patent Office: 1,308 Days
• Field of Search: 422/32, 422/33, 422/21, 422/22, 426/242, 426/520, 19/66.R
• US Class Current: 422/26
• CPC Class Codes: A01M 21/04 Apparatus for destruction by steam, chemicals, burning, or electricity apparatus for burning A01M15/00
• CPC Class Codes: A01M 21/046 by electricity
• CPC Class Codes: A23K 30/10 of green fodder
• CPC Class Codes: A61L 2/07 Steam

Abstract

A method for treating agricultural products for insects, microorganisms, and other infestations is disclosed. An aspect of the method entails reducing or increasing the air pressure associated with the agricultural product, then introducing one or more treatments to the agricultural product. One treatment may comprise heat, and the heat may be in the form of steam or heated air. A second treatment may comprise electromagnetic radiation, in the form of microwave energy or high frequency waves.

Claims

1. A process for treating a baled agricultural product, comprising:

placing said baled agricultural product into a pressure vessel;

reducing pressure within said pressure vessel;

introducing a first treatment to said baled agricultural product, said first treatment comprising heat treatment;

measuring an internal temperature of said baled agricultural product; and

continuing said heat treatment until said internal temperature reaches a temperature level of approximately 100 degrees Celsius.

2. The process of claim 1, wherein said heat treatment comprises steam.

3. The treatment of claim 2, wherein said steam is released from said pressure vessel and the steps of adding steam and releasing steam from said pressure vessel are repeated until said temperature level is achieved.

4. The process of claim 1, further comprising:

continuing said heat treatment until for a specified period of time.

5. The process of claim 4 wherein said specified period of time comprises approximately 5 minutes.

6. The process of claim 4 in which said heat treatment is repeated.

7. The process of claim 6 in which said heat treatment is repeated to achieve said temperature level for said internal temperature.

8. The process of claim 1 wherein said internal temperature is measured at a core of said baled agricultural product.

9. The process of claim 1, further comprising:

introducing a second treatment to said baled agricultural product, said second treatment comprising a chemical treatment.

10. The process of claim 1, wherein said baled agricultural product comprise hay.

11. The process of claim 10, wherein said hay comprises rice straw.

12. The process of claim 1 further comprising increasing said pressure within said pressure vessel and repeating the steps of reducing and increasing said pressure.

13. The process of claim 1, wherein said internal temperature is maintained at said temperature level for a period of time projected to destroy said harmful infestation.

14. The process of claim 1, further comprising measuring said internal temperature using a thermocouple.

15. The process of claim 1, further comprising measuring said internal temperature using a thermocouple-thermowell assembly.

16. A process for treating a baled agricultural product, comprising:

placing said baled agricultural product into a pressure vessel;

reducing pressure to approximately 720-750 mmHg within said pressure vessel;

introducing a first treatment to said baled agricultural product, said first treatment comprising heat treatment;

measuring an internal temperature of said baled agricultural product; and

continuing said heat treatment until said internal temperature reaches a temperature level projected to destroy harmful infestation.

17. A process for treating a baled agricultural product, comprising:

placing said baled agricultural product into a pressure vessel;

reducing pressure within said pressure vessel;

introducing a first treatment to said baled agricultural product, said first treatment comprising heat treatment, said heat treatment further comprising steam at least 100 degrees Celsius in temperature;

measuring an internal temperature of said baled agricultural product; and

continuing said heat treatment until said internal temperature reaches a temperature level projected to destroy a harmful infestation.

18. A process for treating a baled agricultural product, comprising:

placing said baled agricultural product into a pressure vessel;

reducing pressure within said pressure vessel;

introducing a first treatment to said baled agricultural product, said first treatment comprising heat treatment, said heat treatment further comprising heated air;

measuring an internal temperature of said baled agricultural product; and

continuing said heat treatment until said internal temperature reaches a temperature level projected to destroy a harmful infestation.

19. A process for treating a baled agricultural product, comprising:

placing said baled agricultural product into a pressure vessel;

reducing pressure within said pressure vessel;

introducing a first treatment to said baled agricultural product, said first treatment comprising heat treatment;

measuring an internal temperature of said baled agricultural product;

continuing said heat treatment until said internal temperature reaches a temperature level projected to destroy a harmful infestation; and

introducing a second treatment to said baled agricultural product, said second treatment comprising electromagnetic radiation.

20. The process of claim 19, wherein said electromagnetic radiation comprises microwaves.

21. The process of claim 19, wherein said electromagnetic radiation comprises high frequency waves.

22. An apparatus for treating a baled agricultural product, comprising:

a pressure vessel, said pressure vessel having an interior sufficiently sized to enclose one or more baled agricultural products;

a pressure measuring mechanism to measure pressure within said interior of said pressure vessel;

a heat treatment mechanism to apply heat to said interior of said pressure vessel, said heat having a temperature level of approximately 100 degrees Celsius; and

a temperature measuring mechanism to measure an internal temperature of a baled agricultural product that is placed within said interior of said pressure vessel.

23. The apparatus of claim 22, in which said pressure monitoring mechanism comprises a pressure gauge.

24. The apparatus of claim 22, in which said pressure monitoring mechanism comprises a pressure transmitter.

25. The apparatus device of claim 22, in which the heat treatment mechanism comprises a conduit for introducing steam into said interior of said pressure vessel.

26. The apparatus of claim 22, wherein said temperature measuring mechanism comprises a thermocouple capable of being at least partially inserted into a baled agricultural product.

27. The device of claim 22, wherein said temperature measuring mechanism comprises an insertable thermocouple-thermowell assembly capable of being at least partially inserted into a baled agricultural product.

28. The apparatus of claim 22, wherein said temperature measuring mechanism comprises an insertable thermometer.

29. The apparatus of claim 22, further comprising a chemical treatment device.

30. An apparatus for treating a baled agricultural product, comprising:

a pressure vessel, said pressure vessel having an interior sufficiently sized to enclose one or more baled agricultural products;

a pressure measuring mechanism to measure pressure within said interior of said pressure vessel;

a heat treatment mechanism to apply heat to said interior of said pressure vessel;

a temperature measuring mechanism to measure an internal temperature of a baled agricultural product that is placed within said interior of said pressure vessel; and

an electromagnetic energy device.

31. The apparatus of claim 30 in which the electromagnetic energy device generates microwave energy.

32. The apparatus of claim 30 in which the electromagnetic energy device generates high frequency waves.