Plasma whirl reactor apparatus and methods of use

• US 7,622,693 B2
• Filed: 07/15/2002
• Issued: 11/24/2009
• Est. Priority Date: 07/16/2001
• Status: Active Grant

• Current Assignee: Foret Plasma Labs LLC
• Original Assignee: Foret Plasma Labs LLC
• Inventors: Foret, Todd L.
• Primary Examiner(s): Paschall; Mark H
• Application Number:
  US10/196,466
• Publication Number:
  US 20030024806A1
• Time in Patent Office: 2,689 Days
• Field of Search: 219/121.47, 219/121.49, 219/121.48, 219/121.36, 219/121.37, 219/74, 219/121.52, 219/76, 219/16, 219/75, 219/121.59, 219/121.51, 588/900, 588/901, 110/246, 110/346, 110/250, 315/111.21, 315/111.51
• US Class Current: 219/121.43
• CPC Class Codes: B01J 19/088 giving rise to electric discharges for heating purposes H05B7/00; for the production of ozone C01B13/11, H01T19/00
• CPC Class Codes: B01J 19/126 Microwaves
• CPC Class Codes: B01J 19/129 Radiofrequency
• CPC Class Codes: B01J 19/2405 provoking a turbulent flow of the reactants, such as in cyclones, or having a high Reynolds-number
• CPC Class Codes: B01J 2219/089 Liquid-solid
• CPC Class Codes: B01J 2219/0892 involving catalytically active material
• CPC Class Codes: B01J 2219/0894 Processes carried out in the presence of a plasma
• CPC Class Codes: B23K 10/00 Welding or cutting by means of a plasma
• CPC Class Codes: C01B 17/046 without intermediate formation of sulfur dioxide
• CPC Class Codes: C01B 17/58 Recovery of sulfur dioxide from acid tar or the like or from any waste sulfuric acid
• CPC Class Codes: C01B 2203/0238 the reforming step being a carbon dioxide reforming step
• CPC Class Codes: C01B 2203/0272 containing a non-catalytic decomposition step
• CPC Class Codes: C01B 2203/0861 by plasma
• CPC Class Codes: C01B 3/22 by decomposition of gaseous or liquid organic compounds C01B3/0005 takes precedence ; coking liquid carbonaceous materials C10B55/00
• CPC Class Codes: C01B 3/24 of hydrocarbons
• CPC Class Codes: C01B 3/342 with the aid of electrical means, electromagnetic or mechanical vibrations, or particle radiations
• CPC Class Codes: C01F 11/18 Carbonates
• CPC Class Codes: C01F 11/24 Chlorides
• CPC Class Codes: C01F 11/46 Sulfates dehydration of gypsum for the production of calcium sulfate cements C04B11/02
• CPC Class Codes: C01F 7/066 Treatment of the separated residue
• CPC Class Codes: C04B 18/04 : Waste materials; Refuse
• CPC Class Codes: C04B 7/4453 : using plasmas or radiations
• CPC Class Codes: C10B 23/00 : Other methods of heating coke ovens
• CPC Class Codes: C10J 2200/09 : Mechanical details of gasifiers not otherwise provided for, e.g. sealing means
• CPC Class Codes: C10J 2300/093 : Coal
• CPC Class Codes: C10J 2300/0943 : Coke
• CPC Class Codes: C10J 2300/0946 : Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
• CPC Class Codes: C10J 2300/0956 : Air or oxygen enriched air
• CPC Class Codes: C10J 2300/0959 : Oxygen
• CPC Class Codes: C10J 2300/0969 : Carbon dioxide
• CPC Class Codes: C10J 2300/0973 : Water
• CPC Class Codes: C10J 2300/0983 : Additives
• CPC Class Codes: C10J 2300/123 : by electromagnetic waves, e.g. microwaves
• CPC Class Codes: C10J 2300/1238 : by plasma
• CPC Class Codes: C10J 3/54 : Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
• CPC Class Codes: C10J 3/56 : Apparatus; Plants
• CPC Class Codes: C22B 4/005 : using plasma jets smelting, remelting, refining of metals using a plasma as heat source C22B9/22; generating or handling plasma in general H05H1/00; gas-filled discharge tubes for processing materials in general H01J37/32
• CPC Class Codes: D21C 11/12 : Combustion of pulp liquors
• CPC Class Codes: H01J 37/32009 : Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources plasma generation in general H05H1/24
• 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
• CPC Class Codes: H05H 1/44 : using more than one torch
• CPC Class Codes: Y02E 50/30 : Fuel from waste, e.g. synthetic alcohol or diesel
• CPC Class Codes: Y02P 40/121 : Energy efficiency measures, e.g. improving or optimising the production methods
• CPC Class Codes: Y02P 40/18 : Carbon capture and storage [CCS]
• CPC Class Codes: Y02P 40/40 : Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
• CPC Class Codes: Y10S 588/90 : Apparatus

Abstract

Apparatus for synergistically combining a plasma with a comminution means such as a fluid kinetic energy mill (jet mill), preferably in a single reactor and/or in a single process step is provided by the present invention. Within the apparatus of the invention potential energy is converted into kinetic energy and subsequently into angular momentum by means of wave energy, for comminuting, reacting and separation of feed materials. Methods of use of the apparatus in the practice of various processes are also provided by the present invention.

Claims

1. A chemical reactor, comprising:

a kinetic energy comminutor comprising a vessel having an interior defined by a cylindrical portion disposed between a first end and a second end, an outlet in said first end that is aligned with a longitudinal axis of the cylindrical portion, and at least one inlet in said first end to receive a waste material;

a plasma system comprising a set of radio frequency coils disposed around or within said cylindrical portion to generate a plasma within said interior, and two or more jets mounted tangentially in said cylindrical portion to direct a fluid or a gas into said interior to create angular momentum in said plasma to form a plasma vortex that circulates around a central void substantially aligned with said longitudinal axis; and

wherein said plasma vortex reacts with said waste material to create comminution, separation, chemical conversion or a combination thereof.

2. The chemical reactor of claim 1, wherein said plasma system further comprises a plasma torch connected to the second end and aligned with said longitudinal axis of said cylindrical portion to introduce a second plasma into said interior of said vessel.

3. The chemical reactor of claim 1, wherein said second end is cone shaped having a second outlet aligned with said longitudinal axis of said cylindrical portion.

4. The chemical reactor of claim 3, wherein said plasma system further comprises a plasma torch disposed within said second outlet and aligned with said longitudinal axis of said cylindrical portion to introduce a second plasma into said interior of said vessel.

5. The chemical reactor of claim 3, further comprising:

an eductor with a longitudinal axis, connected to said vessel at said second end around said second outlet with said longitudinal axis of said eductor in coaxial alignment with said longitudinal axis of said vessel;

wherein said outlet is replaced by a plasma torch that is aligned with said longitudinal axis of said cylindrical portion to introduce a second plasma into said interior of said vessel to convey said waste material through said eductor.

6. The chemical reactor of claim 3, wherein said outlet is replaced by a plasma torch that is aligned with said longitudinal axis of said cylindrical portion to introduce a second plasma into said interior of said vessel.

7. A chemical reactor, comprising:

a kinetic energy comminutor comprising a vessel having an interior defined by a cylindrical portion disposed between a first end and a second end, an outlet in said second end that is aligned with a longitudinal axis of the cylindrical portion, and an inlet in said cylindrical portion to receive a waste material;

a first plasma source comprising a plasma torch connected to the first end and aligned with said longitudinal axis of said cylindrical portion to introduce a plasma into said interior;

a second plasma source comprising a set of radio frequency coils disposed around or within said cylindrical portion to add energy to said plasma, and two or more jets or slits within said cylindrical portion to direct a fluid or a gas into said interior to create angular momentum in said plasma to form a plasma vortex that circulates around said longitudinal axis; and

wherein said plasma vortex reacts with said waste material to create comminution, separation, chemical conversion or a combination thereof.

8. The chemical reactor of claim 7, further comprising a tube disposed between said first end and said plasma torch, said tube having two or more inlets or slits within said tube to direct a carrier gas into said tube to create angular momentum in said plasma before said plasma enters the interior of said vessel.

9. A reactor comprising:

a vessel having a vertical longitudinal axis, a cylindrical middle portion aligned with said vertical longitudinal axis, a top portion and a bottom portion;

three or more plasma sources mounted tangentially in said cylindrical middle portion such that said plasma touches are substantially aligned with one another in a horizontal plane with respect to the vertical longitudinal axis and said plasma from said plasma sources combine together to create sufficient angular momentum to form a plasma vortex that circulates around a central void within said vessel and is self-confining;

one or more inlets disposed in said top portion that are sized and aligned to direct a waste material into said plasma vortex; and

an outlet aligned with said vertical longitudinal axis and disposed in either said top portion or said bottom portion.

10. The reactor of claim 9, wherein said waste material is fed into said one or more inlets using a conveyor, a hopper, a gravity feed, a fluid, a gas, steam or a combination thereof.

11. The reactor of claim 9, wherein each plasma source comprises an AC plasma torch, DC plasma torch, a microwave plasma torch, an inductively coupled plasma torch or a combination thereof.

12. The reactor of claim 9, wherein:

said bottom portion is cone shaped or substantially flat;

or

said vessel is pancake-shaped, cylindrically-shaped or shaped like a cyclone separator.

13. The reactor of claim 9, wherein said outlet comprises:

a top outlet disposed in said top portion; and

a bottom outlet disposed in said bottom portion.

14. The reactor of claim 9, further comprising a set of radio frequency generating coils disposed around an exterior of said circular middle portion, or said circular middle portion and at least a portion of said bottom portion.

15. The reactor of claim 9, wherein:

said waste material comprises a gas, a fluid, a semi-solid, a solid or a combination thereof; and

said central void comprises a vacuum.

16. The reactor of claim 9, wherein said waste material comprises household garbage, industrial waste, municipal solid waste, package materials, drill cuttings, metal cuttings, sludge, medical waste, red mud, waste electrical and electronic equipment, saw dust, wood chips, black liquor, bagasse, rice straw, animal manure, radioactive waste, coke, coal fines, flyash, biomass, salt cake, unburned carbon, unreacted carbon, volatile organic carbon, flare gas, tail gas, spent acid, fluff, particulate matter or a combination thereof.

17. The reactor of claim 9, wherein each plasma source comprises a plasma jet nozzle fed by a fluid.

18. The reactor of claim 17, wherein said fluid comprises water, steam, carbon dioxide, air, oxygen, nitrogen, hydrogen, helium, volatile organic carbon, an ionizable fluid, an ionizable gas or a combination thereof.

19. The reactor of claim 9, wherein said plasma vortex interacts with said waste material to create one or more reactions.

20. The reactor of claim 19, wherein said one or more reactions comprises comminution, separation, chemical conversion or a combination thereof.

21. The reactor of claim 20, wherein:

comminution comprises atomization, grinding, crushing, grating, granulating, milling, disintegration, attrition, trituration, pulverization or a combination thereof; and

chemical conversion comprises cracking, reforming, gasification, combustion, oxidation, reduction, chemical reaction or a combination thereof.

22. The reactor of claim 9, further comprising another plasma source disposed within said outlet and aligned with said vertical longitudinal axis.

23. The reactor of claim 9 further comprising an eductor attached to said outlet and aligned with said vertical longitudinal axis.