Materials size reduction systems and process

• US 6,045,070 A
• Filed: 08/24/1998
• Issued: 04/04/2000
• Est. Priority Date: 02/19/1997
• Status: Expired due to Fees

• Current Assignee: Ricky And Marcelle Davenport Revocable Trust
• Original Assignee: Marcelle Mcmahan Davenport
• Inventors: Davenport, Ricky W.
• Primary Examiner(s): Rosenbaum, Mark
• Application Number:
  US09/139,074
• Time in Patent Office: 589 Days
• Field of Search: 175/206, 241/34, 241/21, 241/101.8, 241/29, 241/46.11, 241/152.2, 241/46.17, 241/DIG. 31, 241/606, 241/79.1, 241/244, 241/60, 241/81
• US Class Current: 241/60
• CPC Class Codes: B02C 18/14 within horizontal containers B02C18/062, B02C18/065 take precedence
• CPC Class Codes: B02C 18/142 with two or more inter-engaging rotatable cutter assemblies
• CPC Class Codes: B02C 18/145 with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
• CPC Class Codes: B02C 18/146 with a rotor comprising a plurality of axially contiguous disc-like segments each having at least one radially extending cutting element
• CPC Class Codes: B02C 18/2233 of ram or pusher type
• CPC Class Codes: B02C 19/0056 specially adapted for specific materials not otherwise provided for
• CPC Class Codes: B02C 2018/147 of the plural stage type
• CPC Class Codes: B02C 7/04 with concentric circles of intermeshing teeth
• CPC Class Codes: B02C 7/06 with horizontal axis B02C7/04 takes precedence
• CPC Class Codes: B02C 7/12 Shape or construction of discs
• CPC Class Codes: B02C 7/14 Adjusting, applying pressure to, or controlling distance between, discs
• CPC Class Codes: B29B 17/02 Separating plastics from other materials
• CPC Class Codes: B29B 17/04 Disintegrating plastics, e.g. by millingB29B9/02, B29B11/02, B29B13/10, B29B17/02 take precedence
• CPC Class Codes: B29B 2017/0094 Mobile recycling devices, e.g. devices installed in truck trailers
• CPC Class Codes: B29B 2017/0234 using gravity, e.g. separating by weight differences in a wind sifter
• CPC Class Codes: B29B 2017/0272 Magnetic separation
• CPC Class Codes: B29L 2030/00 Pneumatic or solid tyres or parts thereof conveyor belts B29L2031/7092; drive belts B29L2031/7094; fourdrinier belts B29L2031/733
• CPC Class Codes: D21B 1/026 Separating fibrous materials from waste
• CPC Class Codes: D21B 1/345 Pulpers
• CPC Class Codes: E21B 21/066 with further treatment of the solids, e.g. for disposal
• CPC Class Codes: E21B 41/0057 : Disposal of a fluid by injection into a subterranean formation
• CPC Class Codes: F23G 2201/603 : recyclable material
• CPC Class Codes: F23G 2201/80 : Shredding
• CPC Class Codes: F23G 5/033 : comminuting or crushing
• CPC Class Codes: Y02W 30/52 : Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
• CPC Class Codes: Y02W 30/62 : Plastics recycling; Rubber recycling

Abstract

A series of solids size reduction systems utilizing variable displacement rotary dispersion and in-line grinder apparatus. The systems include in-feed, and receiving and mixing systems for blending solids with a carrier fluid. The systems include force feeding of the solids and carrier fluids to the grinding apparatus as well as separation and recover of the carrier fluids for recycling. The systems further include pre-shredding and metal removal apparatus. Systems are also disclosed which provide for recovery of ferrous and nonferrous metals, separation of hi/low density solids and further provides for the palletizing of separation solids. Systems and processes are disclosed for the reduction of whole tires or strips and chips to granulated rubber, the portable processing of raw sugar cane, and the processing of drill cuttings for injecting into a well head.

Claims

1. A solids size reduction and fluidization system comprising:

a) a solids in-feed system

b) a means for receiving and mixing said solids with a liquid carrier; and

c) at least one inline grinding means comprising;

i) a casing having an interior central longitudinal bore, a grinding chamber including a discharge port attached to one end of said casing, and a means for supporting said casing;

ii) a cover plate attachable to said casing covering said grinding chamber having an interior face and a suction port;

iii) a stator assembly attached to said interior face;

iv) a rotor assembly located in rotatable, parallel close proximity to said stator assembly;

v) a quill slidable within said central longitudinal bore;

vi) a rotor shaft attached to said rotor assembly, located within and rotatable relative to said quill;

vii) an input shaft assembly rotatable relative to said casing said input shaft being telescopically cooperative with said rotor shaft;

viii) a mechanical seal and thrust bearing assembly located mesial said quill and said rotor assembly and

viii) a means for slidably positioning said quill and said mechanical seal and thrust bearing assembly.

2. The solids size reduction and fluidization system according to claim 1 wherein said system further comprises a means for separating said solids from said liquid carrier and selectively returning said liquid carrier to said means for receiving.

3. The solids size reduction and fluidization system according to claim 2 further comprising a solids pelletizing system connected to said solids separation means.

4. The solids size reduction and fluidization system according to claim 1 wherein said system further comprises a liquid supply source and a means for force feeding said solids and liquids into said in-line grinder.

5. The solids size reduction and fluidization system according to claim 1 wherein said system further includes a shredder means for pre-sizing said solids prior to entering said means for receiving and mixing said solids, said shredder comprising

a) a housing having head and foot ends and side walls;

b) at least one rotor assembly;

comprising a shaft, and a plurality of one piece hubs removably secured in a keyed manner to said shaft;

rotatably suspended between said head and foot ends, each of said hubs having means for removably attaching a plurality of wear inserts;

c) a driver connected to said shaft; and

d) an anvil assembly comprising;

i) a bed plate supported by said housing;

ii) a plurality of wear plates adjustably attached to said bed plate; and

iii) a means for allowing said anvil bed plate to expand longitudinal from a fixed point common to a fixed point of said rotor assembly.

6. The solids size reduction and fluidization system according to claim 1 wherein said inline grinder further comprises an attrition zone, stationary and rotating disk having interchangable, segmented, intermeshing teeth.

7. The solids size reduction and fluidization system according to claim 1 wherein said means for receiving further comprising a magnetic metal separation means for collecting and removing ferrous metal.

8. A solids size reduction and fluidization system comprising:

a) a solids in-feed system;

b) a means for shredding said solids to a size acceptable by an in-line grinder;

c) a means for receiving and mixing said solids with a liquid carrier;

d) an inline grinder comprising;

i) a casing having an interior central longitudinal bore, a grinding chamber including a discharge port attached to one end of said casing, and a means for supporting said casing;

ii) a cover plate attachable to said casing covering said grinding chamber having an interior face and a suction port;

iii) a stator assembly attached to said interior face;

iv) a rotor assembly located in rotatable parallel close proximity to said stator assembly;

v) a quill slidable within said central longitudinal bore;

vi) a rotor shaft attached to said rotor assembly, located within and rotatable relative to said quill;

vii) an input shaft assembly rotatable relative to said casing said input shaft being telescopically cooperative with said rotor shaft;

viii) a mechanical seal and thrust bearing assembly located mesial said quill and said rotor assembly and

viii) a means for slidably positioning said quill and said mechanical seal and thrust bearing assembly; and

e) a means for separating said solids from said liquid carrier and selectively returning said liquid carrier to said receiving means.

9. A solids size reduction and fluidization system comprising:

a) a solids in-feed system;

b) a means for receiving said solids and combining said solids with a liquid carrier;

c) a variable displacement, dispersion system integral with said means for receiving comprising;

i) a stationary, attrition plate, a rotating attrition plate attached to a rotor member thus providing an attrition zone therebetween and a plurality of descending grinding stages;

ii) a plurality of intake vanes, attached to said rotor member, for importing, by suction, said combination liquid and solids material from said receiving means into said attrition zone;

iii) a means attached to said rotor member for agitating said solids and liquids and further fractionating said solid materials for importing into said attrition zone;

iv) a means for collecting and discharging said solid materials dispersed within said receiving means; and

v) a means for rotating at least one of said attrition plates; and

d) a means for separating said solids from said liquid carrier and selectively returning said liquid carrier to said receiving means.

10. The solids size reduction and fluidization system m according to claim 9 further comprising an inline grinder having variable rotor/stator displacement connected fluidly and located intermediate to said dispersion system and said means for separating said solids from said liquids.

11. The solids size reduction and fluidization system according to claim 9 wherein said receiving means further comprising a magnetic metal separation means for collecting and removing ferrous metal from said receiving means.

12. A solids size reduction system comprising:

a) a solids in-feed system;

b) a means for receiving said solids and combining said solids with a liquid carrier;

c) a variable displacement, dispersion system integral with said means for receiving comprising;

i) a stationary, attrition plate, a rotating attrition plate attached to a rotor member thus providing an attrition zone therebetween and a plurality of descending grinding stages;

ii) a plurality of intake vanes, attached to said rotor member, for importing, by suction, said combination liquid and solids material from said receiving means into said attrition zone;

iii) a means attached to said rotor member for agitating said solids and liquids and further fractionating said solid materials for importing into said attrition zone;

iv) a means for collecting and discharging said solid materials dispersed within said receiving means; and

v) a means for rotating at least one of said attrition plates; and

d) an inline grinder means having variable rotor/stator displacement attached fluidly to said discharge port of said dispersion system, for fine grinding and particle sizing of said solids being discharged from said dispersion system.

13. The solids size reduction and fluidization system according to claim 12 further comprising a means for separating said solids from said liquid carrier and selectively returning said liquid carrier to said receiving means.

14. The solids size reduction and fluidization system according to claim 12 wherein said means for receiving further comprising a magnetic metal separation means for collecting and removing ferrous metal from said receiving means.

15. A solids size reduction system comprising:

a) a solids in-feed system;

b) a means for receiving said solids and combining said solids with a liquid carrier;

c) a variable displacement, dispersion system integral with said means for receiving comprising;

i) a stationary, attrition plate, a rotating attrition plate attached to a rotor member thus providing an attrition zone therebetween and a plurality of descending grinding stages;

ii) a plurality of intake vanes, attached to said rotor member, for importing, by suction, said combination liquid and solids material from said receiving means into said attrition zone;

iii) a means attached to said rotor member for agitating said solids and liquids and further fractionating said solid materials for importing into said attrition zone;

iv) a means for collecting and discharging said solid materials dispersed within said receiving means; and

v) a means for rotating at least one of said attrition plates; and

d) a shredding means for pre-sizing said solids located intermediate said solids infeed system and said means for receiving and combining liquids with solids.

16. The solids size reduction and fluidization system according to claim 15 wherein said shredding means further comprises at least one rotor assembly comprising:

a shaft and plurality of one piece interchangeable hubs removably secured to said shaft, said hubs having a plurality of replaceable tooth assemblies; and

an anvil assembly comprising a bed plate having replaceable anvil insert and insert holders.

17. The solids size reduction and fluidization system according to claim 15 further comprising a means for separating said solids from said liquid carrier and selectively returning said liquid carrier to said receiving means.

18. The solids size reduction and fluidization system according to claim 15 further comprising an inline grinder means having variable rotor/stator displacement attached to said discharge port of said dispersion system for fine grinding and particle sizing of solids being discharged from said dispersion system.

19. The solids size reduction and fluidization system according to claim 18 further comprising:

a) a metal separator located intermediate said shredding means and said receiving means; and

b) a hi/low density solids separator attached and fluidly connected intermediate to said discharge port of said dispersion system and said in-line grinder.

20. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation comprising:

a) a slurry tank having a discharge port;

b) a conveyance for collecting and transporting said drill cuttings from a drilling platform, to said slurry tank;

c) a fluid injection line connected to said slurry tank having at least one liquid sources;

d) a means for selectively controlling volume of said liquid entering said slurry tank;

e) a transfer pump in fluid communication with said discharge port; and

f) a dispersion grinder system having an internal quill extending therefrom for variably displacing a rotor/stator assembly integral with said slurry tank having a suction inlet in fluid communication with fluids and solids within said slurry tank, and a discharge port in conduit communication with a transfer pump.

21. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation according to claim 20 wherein said system further comprises:

a) a means for injecting enhancing polymers into said slurry tank; and

b) a means for monitoring viscosity of said slurry within said slurry tank and controlling said viscosity by injecting various amounts of said polymers.

22. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation according to claim 20 wherein said system further comprises a means for monitoring mass of said slurry discharged from said dispersion grinder and automatically controlling amounts of said liquid entering said slurry tank.

23. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation according to claim 20 wherein said system further comprises a means for collecting ferrous metal, located in fluid communication with said slurry tank and dispersion grinder.

24. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation comprising:

a) a slurry tank and an injection holding tank, each having a discharge port;

b) a conveyance for collecting and transporting said drill cuttings from a drilling platform into said slurry tank;

c) a fluid injection line connected to said slurry tank and said holding tank having at least one liquid sources;

d) a means for selectively controlling volume of said liquid sources;

e) a transfer pump in fluid communication with each said discharge port; and

f) a dispersion grinder having variable displacement rotor/stator assembly integral with said slurry tank further having a suction inlet and agitation means for mixing contents of said slurry tank, said grinder being in fluid communication with at least one transfer pump.

25. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation according to claim 24 wherein said system further comprises:

a) a means for injecting enhancing polymers into said slurry tank and said holding tank; and

a) a means for monitoring viscosity of said slurry within said slurry tank and holding tank and controlling said viscosity by selectively injecting various amounts of said polymers.

26. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation according to claim 24 wherein said system further comprises a means for monitoring mass of said slurry discharged from said dispersion grinder and selectively controlling amounts of water entering said slurry tank and holding tank.

27. A system for the homogenization of a slurry of segregated drill cuttings prior to injection into an earth formation according to claim 24 wherein said system further comprises a means for collecting ferrous metal in fluid communication with said dispersion grinder.

28. A portable solids reduction and fluidization system comprising:

a) a transportable solids in-feed system;

b) a transportable means for receiving and mixing said solids with a liquid carrier;

c) at least one inline grinding means comprising;

i) a casing having an interior central longitudinal bore, a grinding chamber including a discharge port attached to one end of said casing, and a means for supporting said casing;

ii) a cover plate attachable to said casing covering said grinding chamber having an interior face and a suction port;

iii) a stator assembly attached to said interior face;

iv) a rotor assembly located in rotatable, parallel close proximity to said stator assembly;

v) a quill slidable within said central longitudinal bore;

vi) a rotor shaft attached to said rotor assembly, located within and rotatable relative to said quill;

vii) an input shaft assembly rotatable relative to said casing said input shaft being telescopically cooperative with said rotor shaft;

viii) a mechanical seal and thrust bearing assembly located mesial said quill and said rotor assembly and

viii) a means for slidably positioning said quill and said mechanical seal and thrust bearing assembly;

d) a means for separating ground solids from said liquid carrier and selectively returning said liquid carrier to said means for receiving in fluid communication with said means for grinding; and

e) a means for collecting said ground solids.