US3920381A - Rotary furnace having a planetary cooler - Google Patents

Rotary furnace having a planetary cooler Download PDF

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Publication number
US3920381A
US3920381A US428459A US42845973A US3920381A US 3920381 A US3920381 A US 3920381A US 428459 A US428459 A US 428459A US 42845973 A US42845973 A US 42845973A US 3920381 A US3920381 A US 3920381A
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US
United States
Prior art keywords
furnace
head
tube
axis
inlet
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
US428459A
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English (en)
Inventor
Otto Heinemann
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Polysius AG
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Filing date
Publication date
Application filed by Polysius AG filed Critical Polysius AG
Application granted granted Critical
Publication of US3920381A publication Critical patent/US3920381A/en
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    • 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
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/38—Arrangements of cooling devices
    • F27B7/40—Planetary coolers

Definitions

  • This invention relates to a planetary cooler comprising a number of cooling tubes disposed in planetary manner on the periphery of a rotary tube furnace and which are connected to the material exit end of the rotary tube furnace through inlet pipes and inlet heads.
  • the pipes are outwardly inclined against the direction of rotation of the furnace and each inlet head is inclined towards the rotary tube furnace.
  • the cylindrical wall of the cooling tube inlet head is parallel to the furnace axis on the side opposite the inlet tube.
  • the inlet tubes have over their entire length a constant inclination to the furnace axis, and have their axes offset relative to the cooling tube axis in the direction of rotation of the furnace.
  • the inlet tube in this construction projects relatively deeply into the cooling tube inlet head.
  • the object of the invention is therefore to avoid these defects of the known construction by constructing a planetary cooler in such manner that return of material from the inlet head of the cooling tubes into the rotary tube furnace is prevented, and the walls of the inlet headand inlet tubes are particularly well protected from wear.
  • the inlet tubes consist of a shorter part adjacent the rotary tube furnace and extending generally radially therefrom, and a longer part adjacent thereto and outwardly inclined against the direction of rotation of the furnace;
  • the axis of the inclined part of the inlet tube intersects the axis of the inlet head; c. the wall of the cooling tube inlet head facing away from the rotary tube furnace and opposite the mouth of the inlet tube is also inclined to theaxis of rotation of the rotary tube fumace.
  • the inlet head of the individual cooling tubes thus may be considered part of the material fed through the inlet tube drops to about the V centre of a trough-shaped recess, wherein consequently a cushion of material can form which effectively proactual cooling tubes.
  • FIG. 1 is a schematic cross-section through part of a planetary cooler constructed in accordance with the invention.
  • FIG. 2 is a partial longitudinal section on the line IIII of FIG. 1.
  • a number of cooling tubes 2 connected to the material outlet end of the rotary tube fumace 1 by ducts, each of which includes an inlet tube 3.
  • Each of these inlet tubes consists of a shorter part 4 adjacent the rotary tube furnace 1 and extending generally radially, with a longer part 6 adjacent thereto and outwardly inclined against the direction of rotation of the furnace (arrow 5).
  • the axis of the radially extending part 4 is indicated by 7, while 8 indicates the axis of the inclined part 6.
  • each cooling tube 2 Joining each cooling tube 2 with its associated inlet pipe 3 is a substantially cylindrical inlet head 9 having a longitudinal axis 10.
  • the axis 10 of each inlet head 9 is inclined to the longitudinal axis 11 of the cooling tube at an angle which lies between 20 and 45, and preferably between about 30 35.
  • the wall 9' of inlet head 9 which faces the rotary furnace 1 and through which the inlet tube 3 passes, is inclined to the axis of rotation 13 of the rotary tube furnace.
  • the wallv9' of inlet tube 9 remote from the furnace and opposite the mouth of the inlet tube 3 also is inclined to the axis 13 of the furnace and in the direction of movement of the material.
  • the axis 8 of the inclined part 6 of the inlet tube 3 intersects the axis 10 of the inlet head.
  • the axis 7 of the generally radial part 4 of each individual inlet tube is offset by an angle B (lying between 5 and 20, preferably about 10) in the direction of rotation of the furnace in relation to a plane 12 which passes through the longitudinal axis 13 of rotary tube furnace and the axis 10 of the inlet head 9.
  • the height H of the wall of the cooling tube inlet head 9 disposed between the mouth of the inlet tube 3 and the cylindrical main part of cooling tube 2 is between l5 35%, and preferably about 25%, of the in- 3 ternal diameter D of the cooling tube 2.
  • the terminal end wall 14 of inlet head 9 is externally domed, which firstly facilitates lining with brickwork and secondly helps to ensure that on rotary movement of the planetary cooler the material remaining in inlet head 9 is carried into the trough lying below the mouth of the inlet tube 3, so that a desirable cushion of material 15 is formed.
  • material 16 flows out of the furnace in the manner shown schematically in FIG. 1, through an inlet tube 3, and into the inlet head 2 of the corresponding cooling tube, whereby the wall of the inlet tube is scarcely touched, due to the bend in the inlet tube.
  • the new material dropping into the inlet head falls on the previously mentioned cushion of material 15 in the lowest trough of the inlet head, and during further rotation of the planetary cooler is conveyed into the corresponding cooling tube by a tumbling movement (schematically indicated in FIG. 2 by the line 17).
  • a planetary cooler comprising a number of cooling tubes disposed in planetary manner about the periphery of said furnace with their longitudinal axes substantially parallel to the axis of rotation of said furnace; and duct means corresponding in number to the number of said cooling tubes and joining the discharge end of said furnace and each of said cooling tubes, each of said duct means comprising an inlet pipe and a head, closed at one end, said inlet pipe being joined at one of its ends to said furnace and at its other end to the closed end of said head, said head being joined at its other end to the associated cooling tube, said inlet pipe having a portion thereof inclined against the direction of rotation of said furnace, and said head having a substantially cylindrical portion inclined outwardly to the longitudinal axis of the associated cooling tube along a line extendingfrom the juncture of said head and the associated tube to the juncture of said head and the associated inlet pipe, said portion extending a
  • each inlet pipe has a second portion interposed between said inclined portion and said furnace and which extends 4 substantially radially of the axis of rotation of said furnace.
  • each head is substantially cylindrical and is inclined to the axis of the associated cooling tube at an angle of between about 20 and 45.
  • a rotary tube furnace rotatable in one direction about an axis; a number of cooling tubes disposed in planetary manner about the periphery of said furnace with their longitudinal axes substantially parallel to the axis of rotation of said furnace; a head at one end of each of said cooling tubes and in communication therewith, each of said heads comprising a substantially cylindrical tube portion closed at one end and joined at its other end to the associated cooling tube and extending from said other end at an outward inclination to the axis of rotation of said furnace; and an inlet tube interconnecting and establishing communication between said furnace and each of said heads, said cylindrical tube portion of each of said heads extending a sufficient distance that material discharged from said furnace into such head via the associated inlet tube will form a cushion of material at the closed end of such head adjacent the associated inlet tube.
  • each of said inlet tubes has a longitudinal axis which is inclined against the direction of rotation of said fur-

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Furnace Details (AREA)
US428459A 1973-02-01 1973-12-26 Rotary furnace having a planetary cooler Expired - Lifetime US3920381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2304945A DE2304945C3 (de) 1973-02-01 1973-02-01 Planetenkühler

Publications (1)

Publication Number Publication Date
US3920381A true US3920381A (en) 1975-11-18

Family

ID=5870657

Family Applications (1)

Application Number Title Priority Date Filing Date
US428459A Expired - Lifetime US3920381A (en) 1973-02-01 1973-12-26 Rotary furnace having a planetary cooler

Country Status (8)

Country Link
US (1) US3920381A (fr)
JP (1) JPS5213805B2 (fr)
BR (1) BR7400712D0 (fr)
DE (1) DE2304945C3 (fr)
FR (1) FR2216533B3 (fr)
GB (1) GB1397489A (fr)
IT (1) IT1003385B (fr)
ZA (1) ZA74222B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089641A (en) * 1975-08-25 1978-05-16 Fives-Cail Babcock Rotary kiln with cluster of cooling tubes
US20110065057A1 (en) * 2009-09-17 2011-03-17 Petrocoque S/A Industria E Comercio Supply means of a rotating furnace used for calcination of oil green coke
DE102016007221A1 (de) 2016-06-14 2017-12-14 Allgaier Werke Gmbh Drehrohrkühler und Verfahren zum Betreiben eines Drehrohrkühlers
WO2019219233A1 (fr) 2018-05-14 2019-11-21 Grenzebach Bsh Gmbh Appareil à tubes rotatifs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6047162U (ja) * 1983-09-08 1985-04-03 セイコーエプソン株式会社 磁気デイスク駆動装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372915A (en) * 1965-09-28 1968-03-12 Smidth & Co As F L Rotary kiln assemblies
US3502139A (en) * 1967-03-22 1970-03-24 Smidth & Co As F L Planetary coolers for use with rotary kilns
US3556495A (en) * 1968-01-22 1971-01-19 Smidth & Co As F L Rotary kilns with planetary coolers
US3790335A (en) * 1971-04-08 1974-02-05 Smidth & Co As F L Lined coolers for rotary kilns
US3792961A (en) * 1971-05-25 1974-02-19 Smidth & Co As F L Rotary kiln
US3811824A (en) * 1971-09-20 1974-05-21 Smidth & Co As F L Cooler tubes for rotary kiln
US3813211A (en) * 1971-09-20 1974-05-28 Smith S & Co Cooler tubes for rotary kiln
US3829282A (en) * 1971-12-15 1974-08-13 Kloeckner Humboldt Deutz Ag Satellite cooler for a rotary kiln

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3372915A (en) * 1965-09-28 1968-03-12 Smidth & Co As F L Rotary kiln assemblies
US3502139A (en) * 1967-03-22 1970-03-24 Smidth & Co As F L Planetary coolers for use with rotary kilns
US3556495A (en) * 1968-01-22 1971-01-19 Smidth & Co As F L Rotary kilns with planetary coolers
US3790335A (en) * 1971-04-08 1974-02-05 Smidth & Co As F L Lined coolers for rotary kilns
US3792961A (en) * 1971-05-25 1974-02-19 Smidth & Co As F L Rotary kiln
US3811824A (en) * 1971-09-20 1974-05-21 Smidth & Co As F L Cooler tubes for rotary kiln
US3813211A (en) * 1971-09-20 1974-05-28 Smith S & Co Cooler tubes for rotary kiln
US3829282A (en) * 1971-12-15 1974-08-13 Kloeckner Humboldt Deutz Ag Satellite cooler for a rotary kiln

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089641A (en) * 1975-08-25 1978-05-16 Fives-Cail Babcock Rotary kiln with cluster of cooling tubes
US20110065057A1 (en) * 2009-09-17 2011-03-17 Petrocoque S/A Industria E Comercio Supply means of a rotating furnace used for calcination of oil green coke
US8932050B2 (en) * 2009-09-17 2015-01-13 Petrocoque S/A Indústria e Comércio Supply means of a rotating furnace used for calcination of oil green coke
DE102016007221A1 (de) 2016-06-14 2017-12-14 Allgaier Werke Gmbh Drehrohrkühler und Verfahren zum Betreiben eines Drehrohrkühlers
WO2017215784A1 (fr) 2016-06-14 2017-12-21 Allgaier Werke Gmbh Dispositif de refroidissement à tubes rotatifs et procédé permettant de faire fonctionner un dispositif de refroidissement à tubes rotatifs
DE102016007221B4 (de) 2016-06-14 2018-10-25 Allgaier Werke Gmbh Drehrohrkühler und Verfahren zum Betreiben eines Drehrohrkühlers
US11530881B2 (en) 2016-06-14 2022-12-20 Allgaier Werke Gmbh Rotary cooler and method for operating a rotary cooler
WO2019219233A1 (fr) 2018-05-14 2019-11-21 Grenzebach Bsh Gmbh Appareil à tubes rotatifs
US12000655B2 (en) 2018-05-14 2024-06-04 Grenzebach Bsh Gmbh Rotary tube apparatus

Also Published As

Publication number Publication date
DE2304945B2 (de) 1975-04-10
FR2216533A1 (fr) 1974-08-30
GB1397489A (en) 1975-06-11
FR2216533B3 (fr) 1976-11-26
BR7400712D0 (pt) 1974-10-29
JPS5213805B2 (fr) 1977-04-16
ZA74222B (en) 1975-01-29
IT1003385B (it) 1976-06-10
DE2304945A1 (de) 1974-10-10
JPS49111248A (fr) 1974-10-23
DE2304945C3 (de) 1975-11-20

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