US2592783A - Rotary heat exchanger - Google Patents

Rotary heat exchanger Download PDF

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Publication number
US2592783A
US2592783A US662890A US66289046A US2592783A US 2592783 A US2592783 A US 2592783A US 662890 A US662890 A US 662890A US 66289046 A US66289046 A US 66289046A US 2592783 A US2592783 A US 2592783A
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Prior art keywords
drum
balls
heat exchanger
rotary heat
end wall
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Expired - Lifetime
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US662890A
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Aspegren Olof Erik August
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/10—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material
    • F28C3/12—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid
    • F28C3/18—Other direct-contact heat-exchange apparatus one heat-exchange medium at least being a fluent solid, e.g. a particulate material the heat-exchange medium being a particulate material and a gas, vapour, or liquid the particulate material being contained in rotating drums
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B1/00—Preparing the batches
    • C03B1/02—Compacting the glass batches, e.g. pelletising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
    • F26B3/205—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor the materials to be dried covering or being mixed with heated inert particles which may be recycled
    • 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
    • Y10S165/00—Heat exchange
    • Y10S165/162—Only direct-contact heat exchange between two separately supplied fluids

Definitions

  • the present invention relatesY to improvements in rotatable .drums for treatment, such as drying, heating; dry-distillation or cooling; oi'v pieceshaped material of diierent kinds by means of heated or cooled loose balls which are brought into direct contact with the material to be treated during the rotation of the drum.
  • Fig. 1 shows an axial sectional elevation through a rotatable drum for treatment of materials of different kinds by means of heat car- .rying balls in counter-current flow through the drum;
  • Fig. 2 shows an axial sectional elevation through one end of a rotatable drum of the same kind as in Fig. l, and details of a device for tightening against air penetration or gas leakage.
  • Fig. 1 is illustrated how the heat carrying balls are separated from the material to be treated.
  • Balls 9 are charged into the drum through the inlet conduit 4. and due to the rotation of the drum the balls are there mixed with the material to be treated Iii.
  • Secured to the inside circumference of the drum are one or more grate-like catching members 1, the openings of said catching members having such a size that fine-grained material in the drum can pass through while the balls will be caught and pushed ahead of the catching member.
  • Each of said catching members has such an inclination or shape that the balls cannot roll oil' ⁇ before the catching member has reached, due to the rotation of the drum, a certain point in the upper half of the drum. Beginning to roll oli at said point, the balls fall into a funnel 8 and are discharged through the outlet conduit 5.
  • Fig. 1 is also illustrated how the material to be treated, said material supposed to be more o1' less line-grained, is discharged from the drum.
  • the material I0 is charged to the .drum through the inlet conduit II, and due to the rotation of the drum, the material is there mixed with the 1 claim. (ci. 257-552) i 2 heat carrying balls.
  • i 2 heat carrying balls.
  • I3 having a size that allows the ⁇ iinegrained material but not the balls to slip through.
  • numeral 3 designates a centrally arranged stationary support in an end wall of a heat treatment drum, said part together with a neck 2
  • a steam conduit 22 the labyrinth box can be set under steam pressure for improved tightening.
  • the gas and steam outlet conduit is supposed to be arranged in the support 3 instead of in the support 2 as shown in Fig. 1.
  • a device for the treatment oi piece-shaped material by means of balls which are brought into direct contact with the material during its operation comprising a cylindrical drum rotating about a substantially horizontal axis. an annular end wall deiining a central opening at each of the opposite ends of said drum, la fixed support iitting into the central opening of each of said end walls, a stationary inlet conduit for the balls extending into said drum through one of said fixed supports, an upwardly open stationary outlet conduit for the balls extending out of said .drum through the other of said stationary supportsg at least one grate-like catching member secured to and projecting inwardly from the inner surface of the side wall of said drum adjacent the end wall of the latter into which said other stationary support ts, the openings of said catching member having such size in relation to the size of the balls and the size of the pieces of material that, when said catching member, during rotation of said drum, is moved through the balls and material, the balls are prevented from passing through said openings while the material passes freely through said openings, said catching member

Description

Patented Apr. 15, 1952 UNITED sTATEs PATENT OFFICE 010i Erik August Aspegren, Stookholm,. Sweden Application April 17, 194A?,r Seria-1 No. 662,890
The present invention relatesY to improvements in rotatable .drums for treatment, such as drying, heating; dry-distillation or cooling; oi'v pieceshaped material of diierent kinds by means of heated or cooled loose balls which are brought into direct contact with the material to be treated during the rotation of the drum.
The invention will be readily understood as this description proceeds, reference being made to the accompanying drawings in which:
Fig. 1 shows an axial sectional elevation through a rotatable drum for treatment of materials of different kinds by means of heat car- .rying balls in counter-current flow through the drum; and
Fig. 2 shows an axial sectional elevation through one end of a rotatable drum of the same kind as in Fig. l, and details of a device for tightening against air penetration or gas leakage.
In the drawing numeral Vdesignates a cylindrical drum for heat treatment, rotatable upon the roller supports 6, around the horizontal axis as m; 2 and 3 designate centrally arranged, stationary parts of the drum end Walls, said parts forming supports for inlet conduits 4 and II and outlet conduits 5 and I2 respectively for heat carrying balls and for material to be treated. The support 2 also has an outlet conduit I8 for steam or gas developed during the heat treatment process.
In Fig. 1 is illustrated how the heat carrying balls are separated from the material to be treated. Balls 9 are charged into the drum through the inlet conduit 4. and due to the rotation of the drum the balls are there mixed with the material to be treated Iii. Secured to the inside circumference of the drum are one or more grate-like catching members 1, the openings of said catching members having such a size that fine-grained material in the drum can pass through while the balls will be caught and pushed ahead of the catching member. Each of said catching members has such an inclination or shape that the balls cannot roll oil'` before the catching member has reached, due to the rotation of the drum, a certain point in the upper half of the drum. Beginning to roll oli at said point, the balls fall into a funnel 8 and are discharged through the outlet conduit 5.
In Fig. 1 is also illustrated how the material to be treated, said material supposed to be more o1' less line-grained, is discharged from the drum. The material I0 is charged to the .drum through the inlet conduit II, and due to the rotation of the drum, the material is there mixed with the 1 claim. (ci. 257-552) i 2 heat carrying balls. 'In the circumference: of' the drum, adjacent a partition wall I'B, are screen openings. I3 having a size that allows the` iinegrained material but not the balls to slip through. A
'I'he material that slips through is collected in a widened section of the drum I1 from which it passes into pockets I5 located in a more widened section of the drum. Said pockets are so shaped that the material caught in one is lifted, and cannot pour out before the pocket has reached a cert-ain point in the upper half of the drum, at which point the material begins to pour out, and falls into a funnel I4, and is discharged through the outlet conduit I2. The arrow I9 shows the direction of material ilow, and the arrow 2Il the direction of flow of heat carrying balls.
In Fig. 2, numeral 3 designates a centrally arranged stationary support in an end wall of a heat treatment drum, said part together with a neck 2| fitted to the movable part of the end wall of the drum forming a labyrinth for preventing -air penetration or gas leakage. By a steam conduit 22 the labyrinth box can be set under steam pressure for improved tightening. The gas and steam outlet conduit is supposed to be arranged in the support 3 instead of in the support 2 as shown in Fig. 1.
What is claimed is:
A device for the treatment oi piece-shaped material by means of balls which are brought into direct contact with the material during its operation; said device comprising a cylindrical drum rotating about a substantially horizontal axis. an annular end wall deiining a central opening at each of the opposite ends of said drum, la fixed support iitting into the central opening of each of said end walls, a stationary inlet conduit for the balls extending into said drum through one of said fixed supports, an upwardly open stationary outlet conduit for the balls extending out of said .drum through the other of said stationary supportsg at least one grate-like catching member secured to and projecting inwardly from the inner surface of the side wall of said drum adjacent the end wall of the latter into which said other stationary support ts, the openings of said catching member having such size in relation to the size of the balls and the size of the pieces of material that, when said catching member, during rotation of said drum, is moved through the balls and material, the balls are prevented from passing through said openings while the material passes freely through said openings, said catching member being inclined away from the radial in`v a direction opposite to the rotation of said drum so that during the rotation of the latter the balls are rst lifted and then discharged from the catching member into said upwardly open outlet conduit when said catching member is disposed substantially above the latter, a stationary inlet conduit for thematerial leading into said drum through said other stationary support, a transverse partition wall arranged in said drumadjacent to and spaced from the end wall into which said one stationary support fits, the portion of the side wall between said partition and the adjacent end wall having a diameter larger than the remainder thereof, an upwardly open outlet conduit for the material extending out ofthe section of the .drum between said partition and said adjacent end wall and through said one stationary support, an outer shell of a diameter less than that of'said Alarge diameter portion of the side wall extending around and spaced from said side wall -oi the drum and opening endwise through said 4 partition into said section of the drum between said partition and said adjacent end wall, openings in said side wall communicating radially with the space enclosed by said outer shell for passingmaterial into said space, and pocket forming members between said partition and said adjacent end Wall and secured to the side wall for raising material passed through said openings into said space and hence into said .drum section and discharging such material into said outlet conduit for the material.
OLOF ERIK AUGUST ASPEGREN.
REFERENCES CITED The-following references are of record in the iile of this patent:
UNITED STATES PATENTS Johansson May 13, 1947
US662890A 1946-04-17 1946-04-17 Rotary heat exchanger Expired - Lifetime US2592783A (en)

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Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2846422A (en) * 1954-07-19 1958-08-05 Exxon Research Engineering Co Solid liquid heat exchange in low temperature polymerization
US2872386A (en) * 1952-04-14 1959-02-03 Oil Shale Corp Heat-treatment of piece-shaped material
US2877106A (en) * 1957-03-11 1959-03-10 Oil Shale Corp Method for the reduction of oxides
US2986457A (en) * 1957-11-26 1961-05-30 Arthur J Jones Iron ore reduction
US3080156A (en) * 1960-03-23 1963-03-05 Freeman Corp Apparatus for reducing metal oxides without melting
US3193378A (en) * 1964-03-16 1965-07-06 Exxon Research Engineering Co Process for reduction of iron ore
US3324605A (en) * 1964-06-09 1967-06-13 Lester Castings Inc Tumble-finishing process and media therefor
US3401923A (en) * 1966-02-17 1968-09-17 Wilmot Eng Co Dryer
US3477703A (en) * 1967-01-23 1969-11-11 Heurtey Sa Sand circulation oven for ball-shaped products
US3520522A (en) * 1967-09-21 1970-07-14 Metallgesellschaft Ag Screw conveyor for heat treating bulk feed
US3635456A (en) * 1970-04-29 1972-01-18 Dravo Corp Apparatus for direct reduction of iron oxide compacts
US3855017A (en) * 1971-06-15 1974-12-17 Bbc Brown Boveri & Cie Powderized cobalt rare earth metal compounds and process for making such compounds
US4065060A (en) * 1976-10-06 1977-12-27 Aluminum Company Of America Metal flake production
US4207943A (en) * 1979-03-28 1980-06-17 Oros Company Countercurrent solid-to-solid heat transfer apparatus and method
WO1982000634A1 (en) * 1980-08-27 1982-03-04 Owens Corning Fiberglass Corp Pre-heating glass batch
US4338112A (en) * 1981-03-19 1982-07-06 Owens-Corning Fiberglas Corporation Method for controlling particulate emissions from a glass furnace
US4338113A (en) * 1981-03-19 1982-07-06 Owens-Corning Fiberglas Corporation Method for controlling particulate emissions
US4401453A (en) * 1982-04-30 1983-08-30 Owens-Corning Fiberglas Corporation Preheating glass batch
US4409011A (en) * 1980-08-27 1983-10-11 Owens-Corning Fiberglas Corporation Preheating glass batch
US4422847A (en) * 1981-12-28 1983-12-27 Owens-Corning Fiberglas Corporation Preheating glass batch
US4443332A (en) * 1980-07-14 1984-04-17 Oros Company Cross flow solid-to-solid heat transfer apparatus
US4558825A (en) * 1982-05-25 1985-12-17 Gebruder Netzsch Maschinenfabrik Gmbh & Co. Agitator mill
US4592723A (en) * 1984-12-24 1986-06-03 Owens-Corning Fiberglas Corporation Process for reusing scrap glass
US4853024A (en) * 1988-05-17 1989-08-01 Owens-Corning Fiberglas Corporation Scrap recovery apparatus
US5224659A (en) * 1992-02-21 1993-07-06 Control International Apparatus for feeding grinding balls
US5253698A (en) * 1990-01-23 1993-10-19 Applied Process Combination sand cleaning and heat treating apparatus for sand casted metallic parts and method
DE4343756A1 (en) * 1992-12-22 1994-06-23 Murata Manufacturing Co Liq. or pasty ceramic raw materials delivered steadily to heated mixer vessel contg. balls
EP0609614A1 (en) * 1993-01-28 1994-08-10 Japanic Corporation Raw sewage disposal apparatus
US20070294910A1 (en) * 2004-11-16 2007-12-27 Dietrich Eichler Rotary Drum for the Aerobic Heating of Pourable Solids
US20150093710A1 (en) * 2013-09-30 2015-04-02 Krones Ag Apparatus for heating plastic bits

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189772A (en) * 1913-01-28 1916-07-04 Ulrich Ammann Apparatus for drying and mixing material.
US1259241A (en) * 1913-08-05 1918-03-12 Mortelwerk Joliet G M B H Manufacture of mortar.
US1394294A (en) * 1921-03-15 1921-10-18 Smidth & Co As F L Grinding in ball-mills
US2420376A (en) * 1942-07-20 1947-05-13 Johansson Edvin Andreas Destructive distillation process embodying counterflow of solid heating medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1189772A (en) * 1913-01-28 1916-07-04 Ulrich Ammann Apparatus for drying and mixing material.
US1259241A (en) * 1913-08-05 1918-03-12 Mortelwerk Joliet G M B H Manufacture of mortar.
US1394294A (en) * 1921-03-15 1921-10-18 Smidth & Co As F L Grinding in ball-mills
US2420376A (en) * 1942-07-20 1947-05-13 Johansson Edvin Andreas Destructive distillation process embodying counterflow of solid heating medium

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872386A (en) * 1952-04-14 1959-02-03 Oil Shale Corp Heat-treatment of piece-shaped material
US2846422A (en) * 1954-07-19 1958-08-05 Exxon Research Engineering Co Solid liquid heat exchange in low temperature polymerization
US2877106A (en) * 1957-03-11 1959-03-10 Oil Shale Corp Method for the reduction of oxides
US2986457A (en) * 1957-11-26 1961-05-30 Arthur J Jones Iron ore reduction
US3080156A (en) * 1960-03-23 1963-03-05 Freeman Corp Apparatus for reducing metal oxides without melting
US3193378A (en) * 1964-03-16 1965-07-06 Exxon Research Engineering Co Process for reduction of iron ore
US3324605A (en) * 1964-06-09 1967-06-13 Lester Castings Inc Tumble-finishing process and media therefor
US3401923A (en) * 1966-02-17 1968-09-17 Wilmot Eng Co Dryer
DE1608023B1 (en) * 1967-01-23 1970-10-22 Heurtey Sa Oven with moving insert for the thermal treatment of coarse-grained goods
US3477703A (en) * 1967-01-23 1969-11-11 Heurtey Sa Sand circulation oven for ball-shaped products
US3520522A (en) * 1967-09-21 1970-07-14 Metallgesellschaft Ag Screw conveyor for heat treating bulk feed
US3635456A (en) * 1970-04-29 1972-01-18 Dravo Corp Apparatus for direct reduction of iron oxide compacts
US3855017A (en) * 1971-06-15 1974-12-17 Bbc Brown Boveri & Cie Powderized cobalt rare earth metal compounds and process for making such compounds
US4065060A (en) * 1976-10-06 1977-12-27 Aluminum Company Of America Metal flake production
US4207943A (en) * 1979-03-28 1980-06-17 Oros Company Countercurrent solid-to-solid heat transfer apparatus and method
US4443332A (en) * 1980-07-14 1984-04-17 Oros Company Cross flow solid-to-solid heat transfer apparatus
US4409011A (en) * 1980-08-27 1983-10-11 Owens-Corning Fiberglas Corporation Preheating glass batch
WO1982000634A1 (en) * 1980-08-27 1982-03-04 Owens Corning Fiberglass Corp Pre-heating glass batch
US4319903A (en) * 1980-08-27 1982-03-16 Owens-Corning Fiberglas Corporation Method and apparatus for preheating glass batch
EP0046630B1 (en) * 1980-08-27 1984-05-02 Owens-Corning Fiberglas Corporation Preheating glass batch
US4338113A (en) * 1981-03-19 1982-07-06 Owens-Corning Fiberglas Corporation Method for controlling particulate emissions
US4338112A (en) * 1981-03-19 1982-07-06 Owens-Corning Fiberglas Corporation Method for controlling particulate emissions from a glass furnace
US4422847A (en) * 1981-12-28 1983-12-27 Owens-Corning Fiberglas Corporation Preheating glass batch
US4401453A (en) * 1982-04-30 1983-08-30 Owens-Corning Fiberglas Corporation Preheating glass batch
US4558825A (en) * 1982-05-25 1985-12-17 Gebruder Netzsch Maschinenfabrik Gmbh & Co. Agitator mill
US4592723A (en) * 1984-12-24 1986-06-03 Owens-Corning Fiberglas Corporation Process for reusing scrap glass
US4853024A (en) * 1988-05-17 1989-08-01 Owens-Corning Fiberglas Corporation Scrap recovery apparatus
US5253698A (en) * 1990-01-23 1993-10-19 Applied Process Combination sand cleaning and heat treating apparatus for sand casted metallic parts and method
US5224659A (en) * 1992-02-21 1993-07-06 Control International Apparatus for feeding grinding balls
DE4343756A1 (en) * 1992-12-22 1994-06-23 Murata Manufacturing Co Liq. or pasty ceramic raw materials delivered steadily to heated mixer vessel contg. balls
DE4343756C2 (en) * 1992-12-22 2002-10-24 Murata Manufacturing Co Method and device for heat treatment of fine powder
EP0609614A1 (en) * 1993-01-28 1994-08-10 Japanic Corporation Raw sewage disposal apparatus
US20070294910A1 (en) * 2004-11-16 2007-12-27 Dietrich Eichler Rotary Drum for the Aerobic Heating of Pourable Solids
US20100186254A1 (en) * 2004-11-16 2010-07-29 Fan Separator Gmbh Rotary Drum for the Aerobic Heating of Pourable Solids
US7980002B2 (en) * 2004-11-16 2011-07-19 Röhren-und Pumpenwerk Bauer Gesellschaft mbH Rotary drum for the aerobic heating of pourable solids
US20150093710A1 (en) * 2013-09-30 2015-04-02 Krones Ag Apparatus for heating plastic bits

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