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US2750681A - Fluidising devices - Google Patents

Fluidising devices Download PDF

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Publication number
US2750681A
US2750681A US423741A US42374154A US2750681A US 2750681 A US2750681 A US 2750681A US 423741 A US423741 A US 423741A US 42374154 A US42374154 A US 42374154A US 2750681 A US2750681 A US 2750681A
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United States
Prior art keywords
mass
gas
piston
base
box
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US423741A
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English (en)
Inventor
Berry Francois Jacq Barthelemy
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B49/00—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated
    • C10B49/02—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge
    • C10B49/04—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated
    • C10B49/08—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form
    • C10B49/10—Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with hot gases or vapours, e.g. hot gases obtained by partial combustion of the charge while moving the solid material to be treated in dispersed form according to the "fluidised bed" technique
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/16—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with particles being subjected to vibrations or pulsations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
    • B01J8/40—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed subjected to vibrations or pulsations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/05—Fluidized bed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00—Concentrating evaporators
    • Y10S159/03—Fluidized bed

Definitions

  • the usual fluidising arrangements generally consist of a box in which the mass to be fluidised is contained, and the perforated horizontal bottom of which communicates with a conduit through which the gas is supplied to the box.
  • gases have a tendency to escape along the Walls of the box to the detriment of the remainder of the mass, whilst pockets of gas are set up close to the bottom of the box and finally result in continuous chimneys of gas which give rise to undesirable disturbances and reduce to a considerable extent the amount of gas passing through the remainder of the mass.
  • the distribution of the gaseous flow through the mass is irregular, and this reduces considerably both the efiiciency of the gas flow and the efiiciency of fiuidisation.
  • the object of the present invention is to effect improvements in fiuidisation devices which obviate the drawbacks referred to and ensure a uniform distribution of the gaseous flow through the mass to be fluidised, without giving rise to any wall effects or pockets of gas.
  • the flow of gas admitted to the mass to be fluidised is given a pulsatory character.
  • Figs. 1, 2, 3, 4 and 5 are respectively views in vertical cross-section of various forms of construction of the fluidising box in accordance with the invention.
  • FIG. 1 With reference to Fig. 1, there is shown at a box in the shape of a parallelopiped open at its upper end at 11 and consisting of vertical walls 12 and also a horizontal base 13 perforated at 14.
  • a ventilating duct 15 is provided under the box and communicates with the whole surface area of the base 13.
  • the duct 15 is supplied with gas under pressure having a pulsatory nature.
  • the box 10 is filled with a mass 16 of time solid products which are retained by the holes 14.
  • Horizontal fins 17 spaced apart one above the other throughout the entire height of the vertical walls 12 are fixed to these latter and extend into the box 10.
  • the flow of gas encounters roughly the same resistance in the vicinity of the vertical walls 12 as it does in the main body of the mass.
  • the fiuidisation is thus approximately uniform over the whole horizontal area of the mass 16 and the efficiency of gas flow is excellent.
  • FIG. 2 there is shown an alternative form in which the box is still open at its upper part but is perforated not only at its base 13 with holes 19, but also over the greater portion at 20 of its vertical walls 21, which may or may not be provided with fins as shown in Fig. 1.
  • the ventilating duct 18 supplied with gas under pressure having a pulsatory nature, is connected to the box and communicates with the whole of the perforated surface area of the base 13 and of the walls 21.
  • a perforated base 22 of the box with vertical walls 23 is provided, inside the box, with a cellular form of partitioning 24, for example in the shape of a honeycomb or other form, the cells of which are formed by vertical walls and are open both at the top and the bottom.
  • the flow of gas passing out of the duct 25 and passing through the base 22, has always a pulsatory nature and is distributed in the vicinity of the base amongst a large number of cells which have no lateral or horizontal communication between each other. Any pocket of gas which tends to be created near to the base is thus very limited in its extent and is practically eliminated.
  • the duct 26 serving to supply the gas under pressure having a pulsatory nature is fixed and connected by means of a bellows member 27 to the box 28, in such a way that the duct communicates with the perforated base of the box.
  • the box 28 has applied to it a series of vertically-directed shocks and, for this purpose, it is carried at each side by articulated systems 30 actuated by two vertical crankarms 31.
  • the crank-arms 31 are pivoted at 32 to cranked levers 33, the other arms 34 of which are connected together by means of a coupling arm 35.
  • the arm 34 of one of the levers 33 is further connected by means of a driving rod 36 to an eccentric 37 mounted on a driving shaft 38.
  • the box 28 has imparted to it successive vertically-directed shocks in such a way that the pockets of gas which would tend to be formed in the vicinity of the base 29 are re-absorbed and disappear.
  • the box 39 in which means are shown in more detail for giving the flow of gas a pulsatory nature, has its lateral vertical wall 41 extended downwards at 42 in the form of a cylinder.
  • a piston 43 is slidably mounted inside the cylinder 42 and comprises pivotally-mounted flap-valves 44.
  • the piston 43 has applied to it successive shocks in a vertical direction and, for this purpose, it is carried on pivoting members 45 attached to vertical crank-arms 46.
  • the crankazms 46 arerpivotallyattached at 47 to cranked levers 48, theother arms 49 of which areconnected .togetherby a coupling arm 50.
  • the arm 49 of one of the levers 48 is connected to an eccentric-S2 by means of a driving rod 51,,the eccentric being mounted on-a.idriving 'shaft53.
  • a device for fluidising amass of time granular solid products comprising a container of .cylindricalshape, a plurality of passages formed in thebase of said container, said passages being so dimensioned that the particles of the said mass do not pass therethrough, a downwardly-projecting cylindrical portion formed by an extension of the cylindrical walls of said container below said base, a piston slidably mounted in said cylindrical extension, at least one articulated flap-valve mounted in 4 the web of said piston, a supply of gas to the underside of said. piston, and mechanical. m ans includingv at. least .0 1 articulated system for impressing an oscillating motion on said piston, whereby the gas forced through said mass is adapted to be given a pulsatory character.
  • a device for fiuidizing a mass of fine granular solid products comprising a container, .a plurality of passages formed in the base of said container, said passages being so dimensionedthat the particles of the said mass do not pass therethrough, a downwardlyprojecting extension of the walls of said container below said base, a reciprocating element slidably mounted in said extension, at least one articulated baflle mounted in said reciprocating element, a supply ofgasto. the underside of said element, and mechanical means including ;at least one articulated system for impressing an oscillating motion on said reciprocating element, whereby the gas is moved through said reciprocating element past thebaffie and forced through said mass in a pulsatory character.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
US423741A 1953-04-21 1954-04-16 Fluidising devices Expired - Lifetime US2750681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1080713T 1953-04-21

Publications (1)

Publication Number Publication Date
US2750681A true US2750681A (en) 1956-06-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
US423741A Expired - Lifetime US2750681A (en) 1953-04-21 1954-04-16 Fluidising devices

Country Status (5)

Country Link
US (1) US2750681A (xx)
BE (1) BE528148A (xx)
FR (1) FR1080713A (xx)
GB (1) GB754567A (xx)
NL (1) NL186923C (xx)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844361A (en) * 1955-06-28 1958-07-22 Fuller Co Method and apparatus for blending pulverulent material
US2901332A (en) * 1956-09-28 1959-08-25 Standard Oil Co Grid support and seal for fluidized solids systems
US2904323A (en) * 1956-04-20 1959-09-15 Cementir Cementerie Del Tirren Cooling devices for the cement clinkers
US2974419A (en) * 1956-03-24 1961-03-14 Hoechst Ag Method of and apparatus for drying solid particles
US3003752A (en) * 1958-05-20 1961-10-10 Fuller Co Method and apparatus for conditioning pulverulent or granular material
US3024500A (en) * 1960-03-28 1962-03-13 David E Lawson Apparatus for dry mixing of material
US3063848A (en) * 1959-06-01 1962-11-13 Basic Vegets Le Products Inc Fluid treatment for food materials
US3097828A (en) * 1958-04-30 1963-07-16 Grun Gustav Method and apparatus for mixing pulverulent or fine-grain material
US3135599A (en) * 1962-06-08 1964-06-02 Henry M Heidt Production of uranium metal powder in a pulsed fluidized bed and powder resulting therefrom
US3161483A (en) * 1960-02-15 1964-12-15 Rex Chainbelt Inc Vibrating fluidized systems
US3173768A (en) * 1960-06-24 1965-03-16 Werkspoor Nv Vibratory apparatus for treating granular material
US3195713A (en) * 1961-05-24 1965-07-20 Rex Chainbelt Inc Vibratory conveyor with shingled deck
US3218184A (en) * 1956-05-28 1965-11-16 Jerome H Lemelson Apparatus and method for coating pipe
US3233584A (en) * 1958-07-18 1966-02-08 Polymer Corp Coating process and apparatus
US3250521A (en) * 1964-11-06 1966-05-10 Gen Electric Apparatus for decoating utilizing a heated fluidized bed
US3254625A (en) * 1960-03-31 1966-06-07 Cecil W Armstrong Apparatus for producing a fluidized bed of pulverant material
US3254428A (en) * 1962-06-29 1966-06-07 Bates James Gordon Apparatus for use in drying casein or like products
US3379174A (en) * 1964-04-01 1968-04-23 Gen Electric Apparatus for applying a coating onto a localized region of the inside of a hollow article
US3432326A (en) * 1956-05-28 1969-03-11 Dow Chemical Co Method for coating pipe
US3476081A (en) * 1964-03-25 1969-11-04 United States Steel Corp Fluidizing chamber
US3590776A (en) * 1969-03-24 1971-07-06 Sidney Tudor Vacuum fluidized-bed coating apparatus
US3645700A (en) * 1969-01-24 1972-02-29 Asahi Glass Co Ltd Apparatus for fluidized-bed reactions
US3783528A (en) * 1971-01-05 1974-01-08 Badger Co Reactor staging
US3817211A (en) * 1972-02-22 1974-06-18 Owens Corning Fiberglass Corp Apparatus for impregnating strands, webs, fabrics and the like
US3917458A (en) * 1972-07-21 1975-11-04 Nicoll Jr Frank S Gas filtration system employing a filtration screen of particulate solids
US3919437A (en) * 1972-02-22 1975-11-11 Owens Corning Fiberglass Corp Method for electrostatically impregnating strand
US3979531A (en) * 1972-07-17 1976-09-07 Dart Industries Inc. Fluidized bed top surface stabilization mechanism
US4107851A (en) * 1975-12-09 1978-08-22 Richter Gedeon Vegyeszeti Gyar Rt. Method of and apparatus for fluidization
US4123348A (en) * 1975-11-18 1978-10-31 Saarbergwerke Aktiengesellschaft Process for catalytic hydrogenation of coal
US4407355A (en) * 1980-03-11 1983-10-04 Bergwerksverband Gmbh Method and apparatus for decreasing the heat and material exchange in the direct vicinity of the walls of fluidized bed reactors
US4480392A (en) * 1982-01-18 1984-11-06 Ingersoll-Rand Company Conduction dryer for flaked or fluffed material
US4571326A (en) * 1982-10-04 1986-02-18 Institut Francais Du Petrole Process and device for hydroconversion of hydrocarbons
US4604050A (en) * 1983-03-02 1986-08-05 Stal-Laval Turbin Ab Method of cleaning nozzles in a fluidized bed
US4879969A (en) * 1986-07-28 1989-11-14 Toyo Flocking Co. Electrostatic flocking apparatus
US5020239A (en) * 1990-06-08 1991-06-04 Wenger Manufacturing, Inc. Air suspension enrober
US5579588A (en) * 1991-09-09 1996-12-03 Buhler Ag Method for dosing a particulate phase in a gas/particle flow in a fluidized bed
US6302573B1 (en) * 1995-06-09 2001-10-16 Kyowa Hakko Kogyo Co., Ltd. Mixing method of powdered or granular material utilizing pulsating vibration air
US20040192064A1 (en) * 2003-03-28 2004-09-30 Taiwan Semiconductor Manufacturing Co., Ltd. Method and apparatus for homogeneous mixing
US20080037364A1 (en) * 2004-03-15 2008-02-14 Frederic Dietrich Method and Device for Pneumatic Treatment of Powder Materials
WO2019078895A1 (en) * 2017-10-20 2019-04-25 Hewlett-Packard Development Company, L.P. GAS SUPPLY CONTROL FOR CONDITIONING PARTICULATE MATERIAL
CN118935924A (zh) * 2024-10-11 2024-11-12 南通和惠新能源材料有限公司 一种聚合物干燥装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3011969A (en) * 1958-10-15 1961-12-05 Kellogg M W Co Stripper design
FR2240053B1 (xx) * 1973-08-06 1978-03-24 Victor Batiste Henri
DE2554696C2 (de) * 1975-12-05 1977-09-22 Kernforschungsanlage Juelich Verfahren zur beschichtung von graphitischen oder keramischen gegenstaenden
EP0236298B1 (de) * 1985-09-09 1990-01-17 Günther Förster Verfahren und vorrichtung zur verbrennung fester und/oder flüssiger materialien
US5071541A (en) * 1988-09-30 1991-12-10 The Boeing Company Method and apparatus for sorting a mixture of particles

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE225734C (xx) *
US1849146A (en) * 1928-06-18 1932-03-15 Kraut Max Pneumatic flotation apparatus
US1971852A (en) * 1931-06-03 1934-08-28 Firm G Polysius Ag Process for stirring up farinaceous materials in receptacles of any kind by compressed air, compressed gas, or the like
US2125913A (en) * 1936-03-04 1938-08-09 Goebels Paul Method and apparatus for mixing finely divided material
US2371619A (en) * 1940-06-03 1945-03-20 Minerals And Metals Corp Process of and apparatus for facilitating and controlling chemical reactions and physical treatments
US2445516A (en) * 1944-08-05 1948-07-20 Bendix Aviat Corp Laundry drier
US2472873A (en) * 1945-02-03 1949-06-14 Myrtle A Woodrum Hair drier
US2665035A (en) * 1948-12-27 1954-01-05 Huron Portland Cement Company Aerating device for pulverulent material
US2667706A (en) * 1950-09-09 1954-02-02 Du Pont Solids-gas contacting

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE225734C (xx) *
US1849146A (en) * 1928-06-18 1932-03-15 Kraut Max Pneumatic flotation apparatus
US1971852A (en) * 1931-06-03 1934-08-28 Firm G Polysius Ag Process for stirring up farinaceous materials in receptacles of any kind by compressed air, compressed gas, or the like
US2125913A (en) * 1936-03-04 1938-08-09 Goebels Paul Method and apparatus for mixing finely divided material
US2371619A (en) * 1940-06-03 1945-03-20 Minerals And Metals Corp Process of and apparatus for facilitating and controlling chemical reactions and physical treatments
US2445516A (en) * 1944-08-05 1948-07-20 Bendix Aviat Corp Laundry drier
US2472873A (en) * 1945-02-03 1949-06-14 Myrtle A Woodrum Hair drier
US2665035A (en) * 1948-12-27 1954-01-05 Huron Portland Cement Company Aerating device for pulverulent material
US2667706A (en) * 1950-09-09 1954-02-02 Du Pont Solids-gas contacting

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844361A (en) * 1955-06-28 1958-07-22 Fuller Co Method and apparatus for blending pulverulent material
US2974419A (en) * 1956-03-24 1961-03-14 Hoechst Ag Method of and apparatus for drying solid particles
US2904323A (en) * 1956-04-20 1959-09-15 Cementir Cementerie Del Tirren Cooling devices for the cement clinkers
US3218184A (en) * 1956-05-28 1965-11-16 Jerome H Lemelson Apparatus and method for coating pipe
US3432326A (en) * 1956-05-28 1969-03-11 Dow Chemical Co Method for coating pipe
US2901332A (en) * 1956-09-28 1959-08-25 Standard Oil Co Grid support and seal for fluidized solids systems
US3097828A (en) * 1958-04-30 1963-07-16 Grun Gustav Method and apparatus for mixing pulverulent or fine-grain material
US3003752A (en) * 1958-05-20 1961-10-10 Fuller Co Method and apparatus for conditioning pulverulent or granular material
US3233584A (en) * 1958-07-18 1966-02-08 Polymer Corp Coating process and apparatus
US3063848A (en) * 1959-06-01 1962-11-13 Basic Vegets Le Products Inc Fluid treatment for food materials
US3161483A (en) * 1960-02-15 1964-12-15 Rex Chainbelt Inc Vibrating fluidized systems
US3024500A (en) * 1960-03-28 1962-03-13 David E Lawson Apparatus for dry mixing of material
US3254625A (en) * 1960-03-31 1966-06-07 Cecil W Armstrong Apparatus for producing a fluidized bed of pulverant material
US3173768A (en) * 1960-06-24 1965-03-16 Werkspoor Nv Vibratory apparatus for treating granular material
US3195713A (en) * 1961-05-24 1965-07-20 Rex Chainbelt Inc Vibratory conveyor with shingled deck
US3135599A (en) * 1962-06-08 1964-06-02 Henry M Heidt Production of uranium metal powder in a pulsed fluidized bed and powder resulting therefrom
US3254428A (en) * 1962-06-29 1966-06-07 Bates James Gordon Apparatus for use in drying casein or like products
US3476081A (en) * 1964-03-25 1969-11-04 United States Steel Corp Fluidizing chamber
US3379174A (en) * 1964-04-01 1968-04-23 Gen Electric Apparatus for applying a coating onto a localized region of the inside of a hollow article
US3250521A (en) * 1964-11-06 1966-05-10 Gen Electric Apparatus for decoating utilizing a heated fluidized bed
US3645700A (en) * 1969-01-24 1972-02-29 Asahi Glass Co Ltd Apparatus for fluidized-bed reactions
US3590776A (en) * 1969-03-24 1971-07-06 Sidney Tudor Vacuum fluidized-bed coating apparatus
US3783528A (en) * 1971-01-05 1974-01-08 Badger Co Reactor staging
US3817211A (en) * 1972-02-22 1974-06-18 Owens Corning Fiberglass Corp Apparatus for impregnating strands, webs, fabrics and the like
US3919437A (en) * 1972-02-22 1975-11-11 Owens Corning Fiberglass Corp Method for electrostatically impregnating strand
US3979531A (en) * 1972-07-17 1976-09-07 Dart Industries Inc. Fluidized bed top surface stabilization mechanism
US3917458A (en) * 1972-07-21 1975-11-04 Nicoll Jr Frank S Gas filtration system employing a filtration screen of particulate solids
US4123348A (en) * 1975-11-18 1978-10-31 Saarbergwerke Aktiengesellschaft Process for catalytic hydrogenation of coal
DK154955B (da) * 1975-12-09 1989-01-09 Richter Gedeon Vegyeszet Fremgangsmaade og apparat til fluidisering, fortrinsvis til toerring af styrtgods
US4107851A (en) * 1975-12-09 1978-08-22 Richter Gedeon Vegyeszeti Gyar Rt. Method of and apparatus for fluidization
US4407355A (en) * 1980-03-11 1983-10-04 Bergwerksverband Gmbh Method and apparatus for decreasing the heat and material exchange in the direct vicinity of the walls of fluidized bed reactors
US4480392A (en) * 1982-01-18 1984-11-06 Ingersoll-Rand Company Conduction dryer for flaked or fluffed material
US4571326A (en) * 1982-10-04 1986-02-18 Institut Francais Du Petrole Process and device for hydroconversion of hydrocarbons
US4604050A (en) * 1983-03-02 1986-08-05 Stal-Laval Turbin Ab Method of cleaning nozzles in a fluidized bed
US4879969A (en) * 1986-07-28 1989-11-14 Toyo Flocking Co. Electrostatic flocking apparatus
US5020239A (en) * 1990-06-08 1991-06-04 Wenger Manufacturing, Inc. Air suspension enrober
US5579588A (en) * 1991-09-09 1996-12-03 Buhler Ag Method for dosing a particulate phase in a gas/particle flow in a fluidized bed
US6302573B1 (en) * 1995-06-09 2001-10-16 Kyowa Hakko Kogyo Co., Ltd. Mixing method of powdered or granular material utilizing pulsating vibration air
US20040192064A1 (en) * 2003-03-28 2004-09-30 Taiwan Semiconductor Manufacturing Co., Ltd. Method and apparatus for homogeneous mixing
US20080037364A1 (en) * 2004-03-15 2008-02-14 Frederic Dietrich Method and Device for Pneumatic Treatment of Powder Materials
US8834011B2 (en) * 2004-03-15 2014-09-16 Dietrich Engineering Consultants S.A. Device for pneumatic treatment of powder materials
WO2019078895A1 (en) * 2017-10-20 2019-04-25 Hewlett-Packard Development Company, L.P. GAS SUPPLY CONTROL FOR CONDITIONING PARTICULATE MATERIAL
CN118935924A (zh) * 2024-10-11 2024-11-12 南通和惠新能源材料有限公司 一种聚合物干燥装置

Also Published As

Publication number Publication date
GB754567A (en) 1956-08-08
BE528148A (xx)
NL186923C (nl)
FR1080713A (fr) 1954-12-13

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