US3643926A - Apparatus for the treatment of particulate solids - Google Patents

Apparatus for the treatment of particulate solids Download PDF

Info

Publication number
US3643926A
US3643926A US87051A US3643926DA US3643926A US 3643926 A US3643926 A US 3643926A US 87051 A US87051 A US 87051A US 3643926D A US3643926D A US 3643926DA US 3643926 A US3643926 A US 3643926A
Authority
US
United States
Prior art keywords
vessel
inwardly directed
circular
peripheral surface
directed protuberance
Prior art date
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
Application number
US87051A
Other languages
English (en)
Inventor
Alan Grieve
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Simon Carves Ltd
Carves Simon Ltd
Original Assignee
Carves Simon Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carves Simon Ltd filed Critical Carves Simon Ltd
Application granted granted Critical
Publication of US3643926A publication Critical patent/US3643926A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • F27B7/162—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall the projections consisting of separate lifting elements, e.g. lifting shovels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/25—Mixers with rotating receptacles with material flowing continuously through the receptacles from inlet to discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/60—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers
    • B01F29/63—Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with fixed bars, i.e. stationary, or fixed on the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/10—Mixers with shaking, oscillating, or vibrating mechanisms with a mixing receptacle rotating alternately in opposite directions
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F29/00—Mixers with rotating receptacles
    • B01F29/40—Parts or components, e.g. receptacles, feeding or discharging means
    • B01F29/403—Disposition of the rotor axis
    • B01F29/4033—Disposition of the rotor axis inclined
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/23—Pc programming
    • G05B2219/23211—Limit value to tolerances, ranges, plausibility

Definitions

  • ABSTRACT Apparatus for the treatment of particulate solids comprises a vessel disposed with its longitudinal axis in a horizontal or inclined direction and adapted to receive the material to be treated at one end for discharge at the other end after passage therethrough, the vessel having a longitudinally extending in- .wardly directed protuberance in its lower part and being :mounted for oscillatory movement about a longitudinally extending axis and means for effecting said movement whereby material passing through the vessel is repeatedly transferred from side-to-side of said inwardly directed protuberance.
  • This invention concerns apparatus for the treatment of particulate solids, being apparatus of the kind (hereinafter termed of the kind referred to) comprising a vessel disposed with its longitudinal axis in a horizontal or inclined direction and adapted to receive the material to be treated at one end for discharge at the other end after passage therethrough.
  • Apparatus of the kind referred to comprising a vessel of generally cylindrical shape and adapted to be rotated about its central longitudinal axis is well known and widely used for effecting many different operations such as mixing, cooling, drying, calcining and high-temperature chemical reactions typified by the production of cement clinker or the reduction of iron oxides for example.
  • Well-known variations on a simple cylindrical shape include the provision of weir plates and/or lifting blades, the use of sections of different diameters and the trommel type in which the diameter increases progressively from inlet to outlet. These variations are designed to improve mixing, to control retention time or to increase gas-solid contact and consequently heat transfer.
  • rotary units may be very long as in the cement industry where kilns of 400 to 500 ft. in length are not uncommon. Such length is largely dictated by the need to restrict the percentage fill of the kiln cross section. In a simple cylindrical vessel if the percentage full exceeds about percent it is found that a part of the charge flows inertly through the kiln without contacting either the walls of the kiln or the gases passing through it. In mixing operations a somewhat higher degree of fill is permissible particularly if lifting blades are fitted, but in general the limit here is around l2 to percent, and such lifting blades are not practicable on vessels operating at high temperatures.
  • apparatus for the treatment of particulate solids comprises a vessel disposed with its longitudinal axis in a horizontal or inclined direction and adapted to receive the material to be treated at one end for discharge at the other end after passage therethrough, the vessel having a longitudinally extending inwardly directed protuberance in its lower part and being mounted for oscillatory movement about a longitudinally extending axis and means for effecting said movement whereby material passing through the vessel is repeatedly transferred from side to side of said inwardly directed protuberance.
  • FIG. 1 shows a partially sectioned side elevation of one form of apparatus
  • FIG. 2 shows a cross section of the apparatus on the line llll ofFlG. 1;
  • FIGS. 3, 4 and 5 show cross sections of modified forms of apparatus.
  • the apparatus essentially comprises a cylindrical vessel 10 which is mounted with its longitudinal central axis in an inclined direction. Material to be treated is introduced into the vessel at the upper end thereof by means of a feed chute 11 for discharge at the lower end into a collection chute 12 after passage therethrough.
  • a feed chute 11 for discharge at the lower end into a collection chute 12 after passage therethrough.
  • the circularity of the cross section of the vessel 10 is interrupted in the lower segment by an inwardly protruding wedge member 13 which extends over a substantial portion of the length of the vessel 10, terminating at its two ends in slightly spaced relationship from the end walls of the vessel.
  • the vessel 10 is supported for rotational movement by rollers 14 mounted for free rotation in brackets 15 carried by a supporting base structure 16.
  • the rollers 14 engage with rail members 17 extending around the periphery of the vessel 10 at spaced locations.
  • a toothed rack 18 extends around the periphery of the vessel 10 and is engaged by pinions 19 adapted to be driven by electric motors 20.
  • Control means are provided for the electric motors so that the pinions are driven alternately, first in one direction and then in the other, so that the vessel 10 is caused to oscillate about its longitudinal central axis.
  • the vessel is caused to oscillate through a suitable angle from the vertical of between 45 and to either side.
  • the exact angle of oscillation should be matched to the angle of the protruding wedge section 13 and to the characteristics of the material being treated, so that at each point of maximum displacement all of the material lifted by the protruding section slides therefrom. In this way the material is continuously moved from side to side of the protruding section. It will be understood that as the material moves from one side of the wedge to the other, the material which was at the top on one side of the wedge is transferred to the bottom on the other side of the wedge with the result that there is a very efficient turning over and consequent mixing of the material.
  • the percentage fill of the vessel can be considerably increased to around 20 to 30 percent while ensuring that all of the feed material is subjected to the same conditions during its passage through the vessel.
  • the vessel will normally be operated in conjunction with ancillary equipment determined by the nature of the process to be carried out on the material passing through the vessel.
  • the gases may be either cold for cooling operations or heated if the material is to be subjected to a heat treatment.
  • burners for a suitable liquid or gaseous fuel may be mounted within the vessel or externally of the vessel. Again, for example, for cooling operations the lower portion of the vessel may be mounted so as to be immersed in a bath of cooling water.
  • the inner lining of the vessel can be designed in two parts, the lower one of which is subjected to contact with both solids and gases while the upper part is in contact with gases only. This makes the selection of the most appropriate material for each lining more simple.
  • the protruding wedge section also imparts longitudinal rigidity to the vessel to overcome the risk of distortion or bending at high temperatures in the absence of continuous rotation.
  • the protruding section could also serve as a means for introducing or removing gases through suitably designed ports at a point or points along the length of the vessel. Gases could also be addedor extracted through ports in the upper part of the vessel with flexible connections if required.
  • weir plates could be fitted on either side of the protruding section in order to control the percentage fill and the retention of material.
  • the upper portion of the profile of the vessel may be enlarged so as to provide increased cross-sectional area as shown in FIG. 3 to limit the velocity of gases passing through the vessel either cocurrently or concurrently with the flow of solids.
  • this upper part could be flat or could be removed altogether as shown in FIG. 4, when the vessel is essentially of troughlike form.
  • the protruding section need not be of wedge shape, and could for example be of part-circular section as indicated in FlG. 5.
  • Apparatus for the treatment of particulate solids comprising a vessel disposed with its longitudinal axis in a horizontal or inclined direction and adapted to receive the material to be treated at one end for discharge at the other end after passage therethrough, the vessel having a longitudinally extending inwardly directed protuberance in its lower part and being mounted for oscillatory movement about a longitudinally extending axis and means for effecting said movement whereby material passing through the vessel is repeatedly transferred from side to side of said inwardly directed protuberance.
  • Apparatus according to claim 5 including a toothed rack of circular form secured to the peripheral surface of the vessel, at least one pinion engaging with said rack and adapted to be driven alternately, first in one direction and then in the other so that the vessel can be caused to oscillate.
  • Apparatus according to claim 7 including a toothed rack of circular form secured to the peripheral surface of the vessel, at least one pinion engaging with said rack and adapted to be driven al2temately, first in one direction and then in the other so that the vessel can be caused to oscillate.
  • Apparatus according to claim 1 wherein the vessel is in the form of a trough having an open top.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Processing Of Solid Wastes (AREA)
US87051A 1969-11-18 1970-11-05 Apparatus for the treatment of particulate solids Expired - Lifetime US3643926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5629669 1969-11-18

Publications (1)

Publication Number Publication Date
US3643926A true US3643926A (en) 1972-02-22

Family

ID=10476270

Family Applications (1)

Application Number Title Priority Date Filing Date
US87051A Expired - Lifetime US3643926A (en) 1969-11-18 1970-11-05 Apparatus for the treatment of particulate solids

Country Status (8)

Country Link
US (1) US3643926A (de)
CA (1) CA930946A (de)
DE (1) DE2057717A1 (de)
FR (1) FR2069635A5 (de)
GB (1) GB1250962A (de)
NO (1) NO129419B (de)
SE (1) SE370636B (de)
ZA (1) ZA707640B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859907A (en) * 1973-08-23 1975-01-14 Foodfac Inc Boiled egg desheller
US4277185A (en) * 1979-10-09 1981-07-07 Thompson B Gene Rotary gravity mixer
DE3136295A1 (de) * 1980-09-16 1982-04-29 Basf Ag, 6700 Ludwigshafen Verfahren und vorrichtung zum mischen von stoffen
US5609822A (en) * 1995-07-07 1997-03-11 Ciba Corning Diagnostics Corp. Reagent handling system and reagent pack for use therein
US6066300A (en) * 1995-07-07 2000-05-23 Bayer Corporation Reagent handling system and configurable vial carrier for use therein

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535875A (en) * 1978-09-06 1980-03-13 Koa Oil Co Ltd Swung baking furnace
DE3347448A1 (de) * 1983-03-23 1984-09-27 CAM S.r.l., Rodengo Saiano, Brescia Anlage und verfahren zum trocknen vor dem einfuehren in die schmelzoefen der beim drehen entstehenden abfaelle bzw. des metallischen oder nichtmetallischen schrottes
FR2567414B1 (fr) * 1984-07-10 1990-03-23 Menaut Michel Appareil pour la preparation d'un melange de granulats
FR2730423B1 (fr) * 1995-02-15 1997-03-21 Air Liquide Agencement d'une grille de retenue d'un materiau actif dans un recipient, et recipient ainsi equipe
GB2329597B (en) * 1995-02-15 1999-08-11 Air Liquide Arrangement of a retaining grille of an active material in a vessel,and a vessel so equipped
FR2933488A1 (fr) * 2008-07-02 2010-01-08 Pa Technologies Releveur de four rotatif en beton refractaire.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882421A (en) * 1930-05-14 1932-10-11 Hedrick Richard Apparatus for producing aggregates
US2315229A (en) * 1938-03-01 1943-03-30 Schieferstein Georg Heinrich Apparatus for comminuting dry substances, pastes, and the like
GB629027A (en) * 1946-05-25 1949-09-09 Prosperity Co Inc Unloader for washing machines and the like
US2764393A (en) * 1954-05-14 1956-09-25 Charles F Geyer Manually actuated control attachment for automatic choke

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882421A (en) * 1930-05-14 1932-10-11 Hedrick Richard Apparatus for producing aggregates
US2315229A (en) * 1938-03-01 1943-03-30 Schieferstein Georg Heinrich Apparatus for comminuting dry substances, pastes, and the like
GB629027A (en) * 1946-05-25 1949-09-09 Prosperity Co Inc Unloader for washing machines and the like
US2764393A (en) * 1954-05-14 1956-09-25 Charles F Geyer Manually actuated control attachment for automatic choke

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859907A (en) * 1973-08-23 1975-01-14 Foodfac Inc Boiled egg desheller
US4277185A (en) * 1979-10-09 1981-07-07 Thompson B Gene Rotary gravity mixer
DE3136295A1 (de) * 1980-09-16 1982-04-29 Basf Ag, 6700 Ludwigshafen Verfahren und vorrichtung zum mischen von stoffen
US5609822A (en) * 1995-07-07 1997-03-11 Ciba Corning Diagnostics Corp. Reagent handling system and reagent pack for use therein
US5788928A (en) * 1995-07-07 1998-08-04 Chiron Diagnostics Corporation Reagent handling system and reagent pack for use therein
US6066300A (en) * 1995-07-07 2000-05-23 Bayer Corporation Reagent handling system and configurable vial carrier for use therein

Also Published As

Publication number Publication date
GB1250962A (de) 1971-10-27
FR2069635A5 (de) 1971-09-03
ZA707640B (en) 1972-06-28
DE2057717A1 (de) 1971-05-27
CA930946A (en) 1973-07-31
NO129419B (de) 1974-04-08
SE370636B (de) 1974-10-28

Similar Documents

Publication Publication Date Title
US3643926A (en) Apparatus for the treatment of particulate solids
US5410984A (en) System for polymer crystallization
US3983931A (en) Method and apparatus for transferring heat to or from material
US3043678A (en) Reclamation of metallic values from aluminous dross
DE102009059016A1 (de) Verfahren zur Behandlung rieselfähiger Körnung aus anorganischem Rohstoff sowie Behandlungsmodul zur Durchführung des Verfahrens
SU1243618A3 (ru) Способ подготовки шихты дл варки стекла и устройство дл его осуществлени
US3285330A (en) Rotary processor
US5997289A (en) Rotary calciner with mixing flights
US2787599A (en) Process for treating catalyst particles
US6017499A (en) Apparatus for contacting solids in the form of freeflowing lumps with liquids or gases
US3740184A (en) High temperature rabble design
US4228133A (en) Apparatus for sulfatizing roasting of a finely-divided selenium-bearing raw material
JPS6256086B2 (de)
US5908291A (en) Continuous cross-flow rotary kiln
US879480A (en) Process for purifying iron.
US2753056A (en) Charging solids to vessels
SU542081A1 (ru) Вращающа с барабанна печь
US3331595A (en) Apparatus for effecting contact between solids and gases
US4518350A (en) Apparatus and method for calcining sand
US2031122A (en) Furnace for roasting sulphurous ores
US2326163A (en) Heat-treatment apparatus
US2334434A (en) Reduction of finely divided metal compounds
US4288216A (en) Calciner with tapered reverse feed spiral
US2015687A (en) Ore treatment apparatus
US1188020A (en) Rabble.