Methods and apparatus for handling or treating particulate...

Agitating – By injecting gas into mixing chamber

Reexamination Certificate

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C366S132000, C366S134000, C422S145000

Reexamination Certificate

active

07621668

ABSTRACT:
An improved draft tube spout fluid bed (DTSFB) mixing, handling, conveying, and treating apparatus and systems, and methods for operating are provided. The apparatus and systems can accept particulate material and pneumatically or hydraulically conveying the material to mix and/or treat the material. In addition to conveying apparatus, a collection and separation apparatus adapted to receive the conveyed particulate material is also provided. The collection apparatus may include an impaction plate against which the conveyed material is directed to improve mixing and/or treatment. The improved apparatus are characterized by means of controlling the operation of the pneumatic or hydraulic transfer to enhance the mixing and/or reacting by controlling the flow of fluids, for example, air, into and out of the apparatus. The disclosed apparatus may be used to mix particulate material, for example, mortar; react fluids with particulate material; coat particulate material, or simply convey particulate material.

REFERENCES:
patent: 233847 (1880-11-01), Groom
patent: 431313 (1890-07-01), Ballard
patent: 2687331 (1954-08-01), Seaman
patent: 2806744 (1957-09-01), Hall et al.
patent: 2826460 (1958-03-01), Cameron et al.
patent: 3179378 (1965-04-01), Zenz et al.
patent: 3312342 (1967-04-01), Brown
patent: 3494217 (1970-02-01), Tanaka et al.
patent: 3976331 (1976-08-01), Kluger et al.
patent: 4042220 (1977-08-01), Humkey et al.
patent: 4153304 (1979-05-01), Haskins
patent: 4373272 (1983-02-01), Jones et al.
patent: 4502819 (1985-03-01), Fujii et al.
patent: 4566596 (1986-01-01), Hennig
patent: 4569596 (1986-02-01), Romanchik et al.
patent: 4792235 (1988-12-01), Paul
patent: 4834544 (1989-05-01), Paul
patent: 5018869 (1991-05-01), Paul
patent: 5145253 (1992-09-01), Paul et al.
patent: 5152604 (1992-10-01), Paul
patent: 5244317 (1993-09-01), Kuboyama et al.
patent: 5248222 (1993-09-01), Littman et al.
patent: 5254168 (1993-10-01), Littman et al.
patent: 5749684 (1998-05-01), Horn Feja
patent: 5752327 (1998-05-01), Biallas et al.
patent: 6315965 (2001-11-01), Horn Feja et al.
patent: 6936142 (2005-08-01), Hradil et al.
Littman, H., et al., “Effect of Large Particles on the Augmentation of Wall Friction in Vertical Pneumatic and Hydraulic Transport in a Tubulent Fluid.” Ind. Eng. Chem. Res., vol. 46, 2007, pp. 3429-3442.
Park, K.-B., et al. “Mortar Properties Obtained by Dry Premixing of Cementitious Materials and Sand in a Spout-Fluid Bed Mixer.” Cement and Concrete Research, vol. 36, 2006, pp. 728-734.
Plawsky, J.L. et al. “Exploring the Effect of Dry Premixing of Sand and Cement on the Mechanical Properties of Mortar.” Cement and Concrete Research, vol. 33, 2003, pp. 255-264.
Littman, Howard. “State of Development of the Draft Tube Spout-Fluid Bed Contactor for Large Particles.” J. Serb. Chem. Soc., vol. 61, 1996, pp. 211-231.
Povrenovic, D.S. “Fluidmechanical Characteristics and Stability of a Large Diameter Spout-Fluid Bed with a Draft Tube.” J. Serb. Chem. Soc., vol. 61, 1996, pp. 355-365.
Littman, H., et al. “Effect of Particle Diameter, Particle Density and Loading Ratio on the Effective Drag Coefficient in Steady Turbulent Gas-Solids Transport.” Powder Technology, vol. 84, 1995, pp. 49-56.
Littman, H., et al. “Modeling and Measurement of the Effective Drag Coefficient in Decelerating and Non-Accelerating Turbulent Gas-Solids Dilute Phase Flow of Large Particles in a Vertical Transport Pipe.” Powder Technology, vol. 77, 1993, pp. 267-283.
Ferreira, et al. “Fluid Dynamics Characterization of a Pneumatic Bed Using a Spouted Bed Type Solid Feeding System.” The Canadian Journal of Chemical Engineering, vol. 70, Oct. 1992, pp. 905-909.
Nitta, B.V., et al. “Particle Circulation and Liquid Bypassing in Three Phase Draft Tubed Spouted Beds.” Chemical Engineering Science, vol. 47, 1992, pp. 3459-3466.
Grbavcic, R.V., et al., “Variational Model for Prediction of the Fluid-Particle Interphase Drag Coefficient and Particulate Expansion of Fluidized and Sedimenting Beds.” Powder Technology, vol. 68, 1991, pp. 199-211.
Stocker, Rudolf K., et al. “Hydrodynamic and Thermal Modelling of a High Temperature Spouted Bed Reactor With a Draft Tube.” The Canadian Journal of Chemical Engineering, vol. 68, Apr. 1990, pp. 302-310.
Muir, James R., et al., “Solids Circulation in a Spout-Fluid Bed with Draft Tube.” Chemical Engineering Comm., vol. 88, 1990, pp. 153-171.
Berruti, Franco, et al.. “Solids Circulation in a Spout-Fluid Bed with Draft Tube.” The Canadian Journal of Chemical Engineering, vol. 66, Dec. 1988, pp. 919-923.
Matthew, Mani C., et al. “Study of the Hydrodynamics Within a Draft Tube Spouted Bed System.” The Canadian Journal of Chemical Engineering, vol. 66, Dec. 1988, pp. 908-918.
Morgan, M.H., et al. “Jet Penetration and Pressure Drops in Water Spouted Beds of Fine Particles.” The Canadian Journal of Chemical Engineering, vol. 66, Oct. 1988, pp. 735-739.
Yang, Wen-Ching, et al. “Studies on the Solid Circulation Rate and Gas Bypassing in Spouted Fluid-Bed with a Draft Tube.” The Canadian Journal of Chemical Engineering, vol. 61, Jun. 1983, pp. 349-355.
Yang, Wen-Ching, et al. “Solid Entrainment Rate into Gas and Gas-Solid, Two-Phase Jets in a Fluidized Bed” Powder Technology, vol. 33, 1982, pp. 89-94.

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