Photocatalytic reactor system for treating flue effluents

• US 6,773,683 B2
• Filed: 01/08/2002
• Issued: 08/10/2004
• Est. Priority Date: 01/08/2001
• Status: Expired due to Fees

• Current Assignee: Uvtech Systems Incorporated
• Original Assignee: Uvtech Systems Incorporated
• Inventors: Elliott, David J., Thompson, Allan R., Krajewski, Mark T., Camp, Jonathan C., Whitten, George D.
• Primary Examiner(s): Versteeg, Steven
• Application Number:
  US10/041,519
• Publication Number:
  US 20020114745A1
• Time in Patent Office: 945 Days
• Field of Search: 422/186, 422/186.3
• US Class Current: 422/186.3
• CPC Class Codes: B01D 2255/802 Photocatalytic
• CPC Class Codes: B01D 2259/80 Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
• CPC Class Codes: B01D 53/007 by irradiation
• CPC Class Codes: B01D 53/885 Devices in general for catalytic purification of waste gases

Abstract

A photocatalytic reactor system consisting of a photonic energy source to remove undesirable contaminants from an effluent stream. The device includes a photonic energy source, a beam delivery system, and a reaction chamber into which the photonic energy is transmitted. The contaminated effluent flows through the reaction chamber where the photonic energy reacts with it to reduce contaminant emissions.

Claims

1. A photocatalytic reactor system for treating flue effluents containing at least one contaminant comprising:

at least one reactor vessel;

an effluent inlet connected to the reactor vessel for receiving an effluent stream;

at least one photonic energy source coupled to the reactor vessel for introducing photonic energy into the effluent stream, said photonic energy source being a laser; and

an effluent outlet connected to the reactor vessel for discharging a treated effluent stream,

wherein the photonic energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

2. The photocatalytic reactor system of claim 1 in which said photonic energy source includes an ultraviolet (UV) energy source.

3. The photocatalytic reactor system of claim 1 further comprising a plurality of reactor vessels connected in parallel with each other to react with a greater flow of the effluent stream.

4. The photocatalytic reactor system of claim 1 further comprising a plurality of reactor vessels connected in series to react with a greater flow of the effluent stream.

5. The photocatalytic reactor system of claim 1 further comprising a plurality of reactor vessels connected in a matrix of series and parallel configurations.

6. The photocatalytic reactor system of claim 1 in which the reactor vessel is cylindrical.

7. The photocatalytic reactor system of claim 1 in which said reactor vessel is spherical.

8. The photocatalytic reactor system of claim 1 in which said reactor vessel is quadrangular.

9. The photocatalytic reactor system of claim 1 in which the contaminant in the effluent stream is sulfur dioxide.

10. The photocatalytic reactor system of claim 9 in which the sulfur dioxide is converted to sulfur trioxide by the photonic energy.

11. The photocatalytic reactor system of claim 1 further comprising a reactant inlet connected to the reactor vessel for injecting at least one reactant into the reactor vessel.

12. The photocatalytic reactor system of claim 11 wherein said reactant is an inert gas.

13. The photocatalytic reactor system of claim 11 wherein said reactant is an inert chemical or chemical mixture.

14. The photocatalytic reactor system of claim 11 wherein said reactant is a reactive gas.

15. The photocatalytic reactor system of claim 11 wherein said reactant is a reactive chemical or chemical mixture.

16. The photocatalytic reactor system of claim 11 wherein said reactant accelerates the conversion of sulfur dioxide to sulfur trioxide.

17. The photocatalytic reactor system of claim 1 further comprising a plurality of photonic energy sources connected to said reactor vessel for increasing the amount of photonic energy introduced into the effluent stream.

18. An ultraviolet catalytic reactor system for treating an effluent stream containing at least one contaminant comprising:

at least one reactor vessel;

an effluent inlet connected to the reactor vessel for receiving the effluent stream;

at least one ultraviolet energy source coupled to the reactor vessel for introducing ultraviolet energy into the effluent stream, said ultraviolet energy source being a laser; and

an effluent outlet connected to the reactor vessel for discharging a treated effluent stream,

wherein the ultraviolet energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

19. The ultraviolet catalytic reactor system of claim 18 further comprising a plurality of reactor vessels connected in parallel with each other to react with a greater flow of the effluent stream.

20. The ultraviolet catalytic reactor system of claim 18 further comprising a plurality of reactor vessels connected in series to react with a greater flow of the effluent stream.

21. The ultraviolet catalytic reactor system of claim 18 further comprising a plurality of reactor vessels connected in a matrix of series and parallel configurations.

22. The ultraviolet catalytic reactor system of claim 18 in which said reactor vessel is cylindrical.

23. The ultraviolet catalytic reactor system of claim 18 in which said reactor vessel is spherical.

24. The ultraviolet catalytic reactor system of claim 18 in which said reactor vessel is quadrangular.

25. The ultraviolet catalytic reactor system of claim 18 in which the contaminant in the effluent stream is sulfur dioxide.

26. The ultraviolet catalytic reactor system of claim 25 which the sulfur dioxide is converted to sulfur trioxide by the ultraviolet energy.

27. The ultraviolet catalytic reactor system of claim 18 further comprising a reactant inlet connected to said reactor vessel for injecting a reactant into the reactor vessel.

28. The ultraviolet catalytic reactor system of claim 27 wherein said reactant is an inert gas.

29. The ultraviolet catalytic reactor system of claim 27 wherein said reactant is an inert chemical or chemical mixture.

30. The ultraviolet catalytic reactor system of claim 27 wherein said reactant is a reactive gas.

31. The ultraviolet catalytic reactor system of claim 27 wherein said reactant is a reactive chemical or chemical mixture.

32. The ultraviolet catalytic reactor system of claim 27 wherein said reactant accelerates the conversion of sulfur dioxide to sulfur trioxide.

33. The ultraviolet catalytic reactor system of claim 18 further comprising a plurality of ultraviolet energy sources connected to said reactor vessel for increasing the amount of ultraviolet energy introduced into the effluent stream.

34. An ultraviolet catalytic reactor system for treating an effluent stream containing at least one contaminant comprising:

at least one reaction chamber including an annular ring including a first opening for receiving an effluent stream and a second opening for discharging a treated effluent stream;

a plurality of ultraviolet energy inlets in the annular ring for introducing ultraviolet energy into the effluent stream; and

at least one ultraviolet energy source connected to the plurality of ultraviolet energy inlets,

wherein the ultraviolet energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

35. The ultraviolet catalytic reactor system of claim 34 wherein said at least one ultraviolet energy source is connected to said plurality of ultraviolet energy inlets by a plurality of optical fibers.

36. The ultraviolet catalytic reactor system of claim 34 wherein said annular ring includes a plurality of injection nozzles for injecting a reactant into said reaction chamber.

37. The ultraviolet catalytic reactor system of claim 36 wherein said plurality of injection nozzles is connected to a manifold for delivery of said reactant.

38. The ultraviolet catalytic reactor system of claim 36 wherein said reactant is an inert gas.

39. The ultraviolet reactor system of claim 36 wherein said reactant is an inert chemical or chemical mixture.

40. The ultraviolet catalytic reactor system of claim 36 wherein said reactant is a reactive gas.

41. The ultraviolet catalytic reactor system of claim 36 wherein said reactant is a reactive chemical or chemical mixture.

42. The ultraviolet catalytic reactor system of claim 36 wherein said reactant accelerates the conversion of sulfur dioxide to sulfur trioxide.

43. The ultraviolet catalytic reactor system of claim 34 wherein the contaminant is sulfur dioxide.

44. The ultraviolet catalytic reactor system of claim 34 wherein said ultraviolet energy source is a laser.

45. The ultraviolet catalytic reactor system of claim 34 wherein said ultraviolet energy source is a lamp.

46. A photocatalytic reactor system for treating flue effluents containing at least one contaminant comprising:

a plurality of reactor vessels connected in parallel with each other;

an effluent inlet connected to the plurality of reactor vessels for receiving an effluent stream;

at least one photonic energy source coupled to the plurality of reactor vessels for introducing photonic energy into the effluent stream; and

an effluent outlet connected to the plurality of reactor vessels for discharging a treated effluent stream,

wherein the photonic energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

47. A photocatalytic reactor system for treating flue effluents containing at least one contaminant comprising:

a plurality of reactor vessels connected in a matrix of series and parallel configurations;

an effluent inlet connected to the plurality of reactor vessels for receiving an effluent stream;

at least one photonic energy source coupled to the plurality of reactor vessels for introducing photonic energy into the effluent stream; and

an effluent outlet connected to the plurality of reactor vessels for discharging a treated effluent stream,

wherein the photonic energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

48. A photocatalytic reactor system for treating flue effluents containing at least one contaminant comprising:

at least one reactor vessel;

an effluent inlet connected to the reactor vessel for receiving an effluent stream;

at least one photonic energy source coupled to the reactor vessel for introducing photonic energy into the effluent stream;

an effluent outlet connected to the reactor vessel for discharging a treated effluent stream; and

a reactant inlet connected to the reactor vessel for injecting at least one reactant into the reactor vessel;

wherein the photonic energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

49. An ultraviolet catalytic reactor system for treating an effluent stream containing at least one contaminant comprising:

a plurality of reactor vessels connected in parallel with each other;

an effluent inlet connected to the plurality of reactor vessels for receiving the effluent stream;

at least one ultraviolet energy source coupled to the plurality of reactor vessels for introducing ultraviolet energy into the effluent stream; and

an effluent outlet connected to the plurality of reactor vessels for discharging a treated effluent stream,

wherein the ultraviolet energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

50. An ultraviolet catalytic reactor system for treating an effluent stream containing at least one contaminant comprising:

a plurality of reactor vessels connected in a matrix of series and parallel configurations;

an effluent inlet connected to the plurality of reactor vessels for receiving the effluent stream;

at least one ultraviolet energy source coupled to the plurality of reactor vessels for introducing ultraviolet energy into the effluent stream; and

an effluent outlet connected to the plurality of reactor vessels for discharging a treated effluent stream,

wherein the ultraviolet energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.

51. An ultraviolet catalytic reactor system for treating an effluent stream containing at least one contaminant comprising:

at least one reactor vessel;

an effluent inlet connected to the reactor vessel for receiving the effluent stream;

at least one ultraviolet energy source coupled to the reactor vessel for introducing ultraviolet energy into the effluent stream;

an effluent outlet connected to the reactor vessel for discharging a treated effluent stream; and

a reactant inlet connected to said reactor vessel for injecting a reactant into the

reactor vessel;

wherein the ultraviolet energy catalyzes a reaction in the effluent stream to reduce contaminant emissions.