Arc plasma jet and method of use for chemical scrubbing system

• US 20060289397A1
• Filed: 05/05/2006
• Published: 12/28/2006
• Est. Priority Date: 05/16/2005
• Status: Abandoned Application

• Current Assignee: Jetscrub
• Original Assignee: Jetscrub
• Inventors: Mahawili, Imad
• Application Number:
  US11/418,917
• Publication Number:
  US 20060289397A1
• Time in Patent Office: Days
• US Class Current: 219/121.500
• CPC Class Codes: H05H 1/42 with provisions for introducing materials into the plasma, e.g. powder, liquid arc stabilising or constricting arrangements H05H1/3405; coaxial protecting fluids H05H1/341; electrostatic spraying, spraying apparatus with means for charging the spray electrically B05B5/00 ; cf. B23K9/324, B05B7/22

Abstract

A chemical scrubbing apparatus includes a first chamber configured to generate a non-rotating arc therein, a second chamber in communication with the first chamber, and a gas injector injecting a first gas into said arc to generate a plasma jet. The apparatus further includes a first inlet for injecting a substance into the first chamber, a mixing region, the substance mixing with the plasma jet in the mixing region whereby the plasma jet disassociates the chemical constituents of the substance in the mixing region, and a second inlet for directing a second gas and/or water into the first chamber at the mixing region. The mixing region directs the chemical constituents into the second chamber, and the second chamber is adapted to quench the chemical constituents to reduce the reactivity of the chemical constituents to thereby maintain their disassociation.

Claims

17. A chemical synthesis apparatus comprising:

a first chamber configured to generate a plasma jet therein;

a second chamber in communication with said first chamber;

a mixing region;

a first inlet for injecting at least two substances into said first chamber and into said jet whereby said jet transforms said substances into a compound in said mixing region, said compound thereafter flowing into said second chamber;

a second inlet for injecting water and/or gas into said first chamber into said mixing region; and

said second chamber configured to quench said compound when said compound is in said second chamber to thereby stabilize said compound.

18. The chemical synthesis apparatus according to claim 17, wherein said second inlet injects water for quenching said compound in said mixing region and for cooling said apparatus.

19. The chemical synthesis apparatus according to claim 18, wherein said first chamber includes a negative electrode, a positive electrode extending through at least a portion of said negative electrode, and an injection port for injecting a gas between said electrodes, said electrodes adapted to couple to a power source for generating an arc, and said arc generating a plasma jet when said gas is flowed through said arc.

20. The chemical synthesis apparatus according to claim 19, further comprises a tube, said plasma jet and said substances mixing in said tube, and said tube directing said compound formed by said plasma jet and said substances into said second chamber.

21. The chemical synthesis apparatus according to claim 20, further comprising a flange, said flange dividing said apparatus into said first and second chambers, and said flange supporting said tube between said chambers.

22. The chemical synthesis apparatus according to claim 21, wherein said flange deflects the flow of the substances into said plasma jet.

23. The chemical synthesis apparatus according to claim 22, wherein said second inlet injects water for cooling said flange and said tube.

24. The chemical synthesis apparatus according to claim 21, wherein said tube injects the compound into a quenching medium in said second chamber.

25. The chemical synthesis apparatus according to claim 20, further comprising a gas generator for generating a gas, said gas generator generating either (a) an oxidant or (b) nitrogen, said gas generator coupled to said first chamber for delivering the gas to the first chamber.

26. A method of chemical abatement comprising the steps of:

generating a gas ion stream;

flowing a waste medium into the gas ion stream;

mixing the waste medium with the gas ion stream in a mixing region to disassociate the chemical constituents of the waste medium into a non-toxic form; and

quenching the chemical constituents to stabilize the disassociated state of the chemical constituents.

27. The method of chemical abatement according to claim 26, wherein said generating a gas ion stream comprises generating an inert gas ion stream.

28. The method of chemical abatement according to claim 26, further comprising flowing the chemical constituents into a second chamber.

29. The method of chemical abatement according to claim 28, wherein said flowing includes directing the chemical constituents into the second chamber through a tube.

30. The method of chemical abatement according to claim 29, further comprising cooling the tube.

31. The method of chemical abatement according to claim 28, wherein said quenching includes exposing the chemical constituents to one chosen from water and water vapor.

32. The method according to claim 26, further comprising generating oxygen, and injecting the oxygen into the mixing region.

33. The method of chemical synthesis is according to claim 26, wherein said generating a gas ion stream includes generating an arc and flowing a gas into the arc.

34. The method of chemical synthesis according to claim 33, wherein said flowing a gas includes flowing an inert gas into the arc.

35. A method of chemical synthesis comprising:

generating a gas ion stream;

flowing at least two substances into the gas ion stream;

mixing the gas ion stream and the substances to energize the substances to a more reactive state whereby the substances associate to form a chemical compound; and

quenching the chemical compound to stabilize the chemical compound in its existing form.

36. The method of chemical synthesis according to claim 35, further comprising directing water and/or a gas into the mixing region to quench the chemical compound in the mixing region to thereby quench the chemical compound.

37. The method of chemical synthesis according to claim 35, further comprising flowing the chemical compound into a second chamber.

38. The method of chemical synthesis according to claim 37, wherein flowing the chemical compounds includes flowing the chemical compound in the second chamber with laminar flow.

39. The method of chemical synthesis according to claim 38, further comprising generating oxygen, and injecting the oxygen into the mixing region.

40. A chemical synthesis apparatus comprising:

a chamber configured to generate a gas ion stream;

a mixing region;

a first inlet for injecting at least two substances into said chamber and into said gas ion stream whereby said ion stream transforms said substances into a compound in said mixing region, said compound thereafter flowing into said second chamber;

an oxidant generator for generating an oxidant;

a second inlet for injecting at least the oxidant into said first chamber into said mixing region; and

said apparatus adapted to quench said compound to thereby stabilize said compound.

1. A chemical scrubbing apparatus comprising:

a first chamber configured to generate a non-rotating arc therein;

a second chamber in communication with said first chamber;

a gas injector injecting a first gas into said arc to generate a plasma jet;

a first inlet for injecting a substance into said first chamber;

a mixing region, the substance mixing with said plasma jet in said mixing region whereby said plasma jet disassociates the chemical constituents of the substance in said mixing region, said mixing region directing said chemical constituents into said second chamber, and said second chamber adapted to quench the chemical constituents to reduce the reactivity of the chemical constituents to thereby maintain their disassociation; and

a second inlet for directing a second gas and/or water into said first chamber at said mixing region.

2. The chemical scrubbing apparatus according to claim 1, wherein said second inlet injects water into the mixing region.

3. The chemical scrubbing apparatus according to claim 1, wherein said mixing region includes a tube, said tube providing communication between said first chamber and said second chamber.

4. The chemical scrubbing apparatus according to claim 3, wherein said second inlet is adapted to inject water into said first chamber for cooling said tube.

5. The chemical scrubbing apparatus according to claim 3, wherein said tube includes a flange, said flange mounting said tube between said chambers.

6. The chemical scrubbing apparatus according to claim 5, wherein said flange deflects the flow of the substance into said mixing region.

7. The chemical scrubbing apparatus according to claim 5, wherein said tube includes a proximate end in proximity to said plasma jet and a distal end, said distal end extended into said second chamber.

8. The chemical scrubbing apparatus according to claim 7, wherein said distal end of said tube is immersed in a quenching medium in said second chamber.

9. The chemical scrubbing apparatus according to claim 4, wherein said tube comprises a tube formed from a material chosen from stainless steel, Hasteloy, quartz, alumina, or plastic.

10. The chemical scrubbing apparatus according to claim 9, wherein said tube comprises plastic.

11. The chemical scrubbing apparatus according to claim 10, wherein said tube comprises polypropylene.

12. The chemical abatement apparatus according to claim 1, further comprising:

a negative electrode and a positive electrode positioned in said first chamber, said electrodes selectively generating an arc there between for forming the plasma jet.

13. The chemical scrubbing apparatus according to claim 12, wherein said negative electrode comprises an annular electrode, said positive electrode passing through at least a portion of said negative electrode.

14. The chemical scrubbing apparatus according to claim 13, wherein said first inlet injects the first gas between said positive electrode and said negative electrode.

15. The chemical scrubbing apparatus according to claim 14, wherein said second inlet injects water and/or gas into said chamber through said annular electrode.

16. The chemical scrubbing apparatus according to claim 1, further comprising a gas generator for generating a gas, said gas generator generating either (a) an oxidant or (b) nitrogen, said gas generator coupled to said first chamber for delivering the gas to the first chamber.

41. The chemical synthesis apparatus according to claim 40, further comprising a second chamber, said mixing region directing the compound into said second chamber, and said second chamber configured to quench said compound when said compound is in said second chamber to thereby stabilize said compound.

42. The chemical synthesis apparatus according to claim 40, wherein said oxidant generator comprises an oxygen generator.

43. The chemical synthesis apparatus according to claim 42, wherein said gas ion stream comprises an inert plasma jet.

44. A chemical scrubbing apparatus comprising:

a chamber configured to generate a gas ion stream;

a mixing region;

a first inlet for injecting a waste medium into said chamber and into said gas ion stream whereby said ion stream disassociates the chemical constituents of the waste medium in said mixing region;

an oxidant generator for generating an oxidant;

a second inlet for injecting the oxidant into said mixing region; and

said apparatus being adapted to quench the chemical constituents to reduce the reactivity of the chemical constituents to thereby maintain their disassociation.

45. The chemical synthesis apparatus according to claim 44, wherein said gas ion stream comprises an inert plasma jet.

46. The chemical synthesis apparatus according to claim 45, further comprising a second chamber, said mixing region directing the chemical constituents into said second chamber, and said second chamber configured to quench said chemical constituents when in said second chamber to reduce the reactivity of the chemical constituents and thereby maintain their disassociation.

44-1. The chemical synthesis apparatus according to claim 43, wherein said oxidant generator comprises an oxygen generator.