US3829282A - Satellite cooler for a rotary kiln - Google Patents

Satellite cooler for a rotary kiln Download PDF

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Publication number
US3829282A
US3829282A US00315557A US31555772A US3829282A US 3829282 A US3829282 A US 3829282A US 00315557 A US00315557 A US 00315557A US 31555772 A US31555772 A US 31555772A US 3829282 A US3829282 A US 3829282A
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United States
Prior art keywords
rotary kiln
axis
tube
cooling tube
plane
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Expired - Lifetime
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US00315557A
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English (en)
Inventor
H Deussner
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Kloeckner Humboldt Deutz AG
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Kloeckner Humboldt Deutz AG
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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
    • 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
    • F27B7/34—Arrangements of heating devices

Definitions

  • ABSTRACT Satellite cooler which includes a plurality of cooling tubesdistributable uniformly about the periphery of a rotary kiln-at the material outlet end thereof, the cooling tubes being formed with respective material inlet openings connectible by respective tubular connecting chutes to respective material discharge openings formed in the casing of the rotary kiln, the material fdischarge openings being offset in rotary direction of the kiln relative to the respective material inlet openings of the cooling tubes, each of the cooling tubes 1 having a respective inlet end severed obliquely to the axis of the respective cooling tube so that the severing 1 plane extends substantially vertically when the respective material discharge opening in the rotary kiln casing has attained substantially its lowest position beneath the rotary kiln axis and an end plate disposed in the severing plane and closing the cooling tube, the material inlet opening being formed in the end plate.
  • the invention relates to a satellite cooler, and, more particulary, to such a satellite cooler having several cooling tubes located at the material-discharging end of a rotary kiln uniformly distributed about the periphery of a kiln, the cooling tubes being formed with material inlet openings connected by a tubular connecting chute with respective material drop-out or discharge openings formed in the casing of the rotary kiln, the material discharge openings being offset in rotary direction of the kiln relative to the respective material inlet openings of the cooling tubes.
  • Such a tangential inlet requires, at least in the inlet region, a conveyor coil or screw in the interior of the cooling tube, with the aid of which during the upward movement of the cooling tube, the material present in the inlet end of the cooling tube is transported in axial direction to the discharge end of the cooling tube.
  • Such built-in devices have a short service life due to great wear and tear and high thermal stress in the inlet region of the cooling tube.
  • satellite cooler comprising a plurality of cooling tubes distributable uniformly about the periphery of a rotary kiln at the material outlet end thereof, the cooling tubes being formed with respective material inlet openings connectible by respective tubular connecting chutes to respective material discharge openings formed in the casing of the rotary kiln, the material discharge openings being offset in rotary direction of the kiln relative to the respective material inlet openings of the cooling tubes, each of the cooling tubes having a respective inlet end severed obliquely to the axis of the respective cooling tube so that the severing plane extends substantially vertically when the respective material discharge opening in the rotary kiln casing has attained substantially its lowest position beneath the rotary kiln axis and an end plate
  • each material inlet opening is disposed, with respect to the axis of the rotary kiln,-substantially in a half of the respective end plate which is located more distant than the other half thereof from the rotary kiln casing wall.
  • This construction according to the invention has the effect that the hot kiln material enters the cooling tube, in the vicinity of the cooling tube wall, and that during continuous upward movement and the rotation of the cooling tube effected thereby, the edge of the material inlet opening is located above the surface of the material situated in the cooling tube, before the tubular connecting chute proceeds horizontally relative to the rotating cylindrical furnace. In this manner, the material which is already present in the cooling tube is prevented from returning into the kiln.
  • the severing plane in which the end plate is disposed has an angle of inclination B of from 30 to with respect to the longitudinal axis of the cooling tube. Such an inclination or slope assures a good transport or conveyance action of the end plate for the material received in the cooling tube.
  • each of the cooling tubes in the region of the inlet end thereof has a bent or kinked construction in direction toward the respective material discharge opening of the rotary kiln, the location of the kink being in an imaginary plane which, as well as the plane wherein the end plate is disposed, extends substantially in vertical direction when the respective material discharge, opening in the rotary kiln casing has reached the substantially lowest position thereof beneath the rotary kiln axis.
  • the particular advantage of this construction is primarily that at that instant when the respective cooling tube, during the downward movement thereof, reaches a position at which the feeding of material from the interior of the kiln is commenced, the inlet end is largely freed of the quantity of material from the previous feeding phase of the material. Consequently, the material or any part thereof is reliably prevented from dropping back into the kiln during the subsequent upward movement because, due to the virtually complete emptying of the inlet end during the upward movement, at the newly instituted feeding phase, all of the material present in the connecting chute can be completely accommodated by the inlet end and, thus, the respective connecting chute is completely emptied into the cooling tube coordinated therewith.
  • the kink or bend is formed by a part of the respective cooling tube and comprises an end of the tube severed obliquely to the axis of the tube, the end plate being located at the end of the tube and extending perpendicularly to the original axis of the tube, the severed tube end being rotated through an angle of and firmly reconnected at the severed surface thereof to the corresponding severed surface of the remainder of the cooling tube.
  • This construction provides considerable advantages in the production of a cooling tube with a kinked or bent inlet end.
  • the cooling tube end thereby includes initially, an end plate running vertically to the axis of the cooling tube and closed by the end plate. Thus, it represents a circular surface.
  • a developed projection can be dispensed with, because the section running obliquely to the axis of the cooling tube automatically produces two mutually coordinated contours of the cooling tube casing or jacket which, after a rotation through an angle of 180, can be firmly welded together.
  • the respective tubular connecting chutes at the end thereof connecting with the respective cooling tube, extend substantially perpendicularly to the plane of the end plate 1.
  • the material inlet opening has a center which is pivoted in a vertical plane through an angle a of between land 45 counterclockwise about the axis of the respective cooling tube and with respect to a plane which is determined by or in which both the axis of the rotary kiln and the axis of the respective cooling tube are disposed.
  • FIG. 1 is a longitudinal view partly in section of part of a rotary kiln having a satellite cooler constructed in accordance with the invention
  • FIG. 2 is an enlarged fragmentary cross-sectional view of FIG. 1 taken along the line II-Il in the direction of the arrows and presenting an end view of a cooling tube in the lowest position thereof;
  • FIG. 3 is a further'enlarged cross-sectional view of FIG. 2 taken along the line IIIIII in the direction of the arrows, wherein the viewer faces the inlet end of a cooling tube;
  • FIG. 4 is a cross-sectional view of FIG. 3 taken along the line IV-IV in the direction of the arrows.
  • FIG. 1 there is shown therein the discharge end of a rotary kiln.
  • Aplurality of cooling tubes 1 are distributed uniformly about the periphery of the kiln tube 2.
  • the cooling tubes 1 are firmly connected, on the one hand, by tubular connecting chutes 3, and, on the other hand, by retaining bars 4, to the kiln tube or casing 2 or to a tubular elongation 5 of the kiln tube 2.
  • the connecting chute 3 leading to each cooling tube 1 is connected to the kiln heating chamber by a respective material discharge opening 6.
  • each cooling tube facing away from the connecting chutes terminates in a discharge or drop-out casing 7, which accumulates the quantity of material dropping out of or discharging from the cooling tubes and conducts it to a non-illustrated conveyor device disposed below the discharge casing 7.
  • a stationary platform 8 is disposed, whereon a burner device 9 V for the rotary kiln can travel.
  • the combustion chamber of the kiln is tightly sealed off from the tubular extension 5 by a door 10.
  • the connecting chutes 3, in the preferred embodiment of the invention, have a construction wherein, from the location at which they are connected to the rotary kiln, they extend initially in radial direction and then are either repeatedly kinked or folded or are continuously bent or curved and terminate in and substantially perpendicularly to an end 'plate 11 located at the end of therespective cooler tube 1.
  • the closure wall, or end plate 11, which extends at an inclination to the axis of the respective cooler tube 1, in accordance with the invention thus permits, on the one hand, this particular form of the connecting chute 3, which is advantageous for the flow of material from the kiln and permits, on the other hand, that the material discharge opening 6 of the rotary kiln for a respective cooler tube 1 is offset in rotary direction of the kiln (arrow 12 as viewed in FIG. 2) with respect to the material inlet opening 15, i.e., it is arranged in leading position.
  • the respective material inlet opening 15 is located, relative to the axis of the rotary kiln, in that half of the end plate 11 that is of greater distance from the wall or tube 2 of the rotary kiln. A particularly, advantageous disposition of the material inlet opening 15 is described in greater detail hereinbelow.
  • the cooling tube 1, in the vicinity of the inlet end thereof, has a kinked or bent construction in direction toward the respective material discharge opening 6, both the imaginary plane 13 of the location of the kink as well as the plane of the end plate 11 extend substantially vertically (as viewed in FIGS. 1 and 2) when the respective discharge opening 6 formed in the casing of the rotary kiln, has attained substantially the lowest position thereof below the axis of the rotary kiln.
  • the kink is formed so that the plane of reference of the end plate 11 is disposed at an angle B (FIG. 3) between 30 and with respect to the cooling tube axis 17.
  • the angle ,8 is 45.
  • the kink is appropriately made so, that starting from a straight cooling tube with an end plane that extends perpendicularly to the axis of the tube, a part 14 shown in dotted lines in FIG. 3 is severed obliquely to the axis of the tube from an end of the tube which is the inlet end thereof and, offers a rotation of about the cooling tube axis in the vicinity of the severing plane,
  • FIG. 4 which is a sectional view taken along the line IV--1V in FIG. 3 facing toward the inlet end of the cooling tube 1, the inventive disposition of the material inlet opening 15 in the end plate 11 is illustrated.
  • the center 16 of the material inlet opening 15 is pivoted in the plane of the drawing through an angle a of between 15 and 45, for example, counterclockwise about the cooling tube axis 17 and with respect to a plane 19 determined by the axis of the rotary kiln and the axis 17 of the cooling tube, i.e., wherein both the rotary kiln axis and the cooling tube axis are disposed.
  • the material inlet opening 15 is located largely in the half of the end plate 11 that is turned away from the wall of the rotary kiln.
  • the aforedescribed satellite cooler operates in the following manner:
  • the burnt or roasted material present in the interior of the rotary kiln drops through the respective discharge openings 6 located below the axis of the kiln into the connecting chutes 3 and thus reaches, respectively, the inlet ends of the corresponding cooling tubes 1.
  • the supply of material ceases as a consequence of the upward movement of the respective material discharge'opening 6 after is has traveled, respectively, through a predetermined rotary angle. Because the respective material discharge opening 6 associated with the particular cooling tube 1 is disposed in leading relationship with respect to the direction 'of rotation, part of the connecting chute 3 proper is still at an inclination when the respective material discharge opening I 6 is located in a positionabove the rotary kiln axis.
  • the material inlet opening 15 is largely located in the half of the end plate 11, that is, turned away from the casing of the rotary kiln, the edge of the material inlet opening 15, at a position of the rotary kiln in which the material supply from the connecting chute 3 has ceased, is already located above the surface of the material present in the cooling tube 1, so that the material is reliably prevented from dropping back into the rotary kiln.
  • the wall 18 of the kinked part in the aforedescribed embodiment of the invention having a kinked inlet end, slides under the charge of material in the vicinity of the inlet and effects, during the material supply phase, a powerful transporting movement in direction toward the outlet end of the cooling tube.
  • the disposition of the material inlet opening 15 is the end plate 11, which is shown in FIG. 4, has an advantageous effect, because the slope or bank of material forming within the cooling tube 1 due to the rotation of the kiln, as shown in FIG. 4, does not yet cover the cross-section of the material inlet opening 15 when the material supply phase for the respective cooling tube 1 is instituted. In this manner, the material dropping out of the kiln travels deeply into the inlet region of the cooling tube 1.
  • the aforedescribed embodiment only represents a preferred construction of the satellite cooler according to the invention.
  • the aforedescribed motion relationships and the special advantages are capable of attainment with a simplified construction wherein, instead of the kinking, the end plate 11 is already in a plane corresponding substantially to the severing plane 13, which is disposed at an angle [3, between 30 and with respect to the cooling tube axis 17.
  • Satellite cooler comprising a plurality of cooling tubes distributable uniformly about the periphery of a rotary kiln at the material outlet end thereof, said cooling tubes being formed with respective material inlet openings connectible by respective rigid tubular connecting chutes to respective material discharge openings formed in the casing of the rotary kiln, said material discharge openings being offset in rotary direction of the kiln relative to said respective material inlet openings of said cooling tubes, each of said cooling tubes having a respective inlet end severed obliquely to the axis of therespective cooling tube so that the severing plane extends substantially vertically when the respective material discharge opening in the rotary kiln casing has attained substantially its lowest position beneath the rotary kiln axis and an end plate disposed in said severing plane and closing said cooling tube, said material inlet opening being formed in said end plate.
  • each of said material inlet openings islocated with respect to the axis of the rotary kiln in a half of the respective end plate located more distant than the other half thereof from the rotary kiln casing.
  • Satellite cooler according to claim 1 wherein said severing plane in which said end plate is disposed has an angle of inclination B of from 30 to 70 with respect to the longitudinal axis of said cooling tube.
  • each of said cooling tubes in the region of said inlet end thereof, has a kinked construction in direction toward the respective material discharge opening of the rotary kiln, the location of said kink being in an imaginary plane which, as well as the plane wherein said end plate is disposed, extends substantially in vertical direction when the respective material discharge opening in the rotary kiln casing has reached the substantially lowest position thereof beneath the rotary kiln axis.
  • Satellite cooler according to claim 4 wherein said kink is formed by a part of the respective cooling tube comprising an end of the tube severed obliquely to the axis of the tube, said end plate being located at the end of the tube and extending perpendicularly to the original axis of the tube, said severed tube end being rotated through an angle of 180 and firmly reconnected at the severed surface thereof to the corresponding severed surface of the remainder of said cooling tube.
  • Satellite cooler according to claim 1 wherein the respective tubular connecting chutes at the end thereof connecting with the rotary kiln extend substantially in radial direction of the rotary kiln and, at the end thereof connecting with the respective cooling tube, extend substantially perpendicularly to the plane of said end plate.
  • Satellite cooler according to claim 1 wherein said material inlet opening has a center which is pivoted in a vertical plane through an angle a of between and 45 counterclockwise about the axis of the respective cooling tube and with respect to a plane in which both the axis of the rotary kiln and the axis of the respective cooling tube are disposed.
  • Satellite cooler according to claim 2 wherein said severing plane in which said end plate is disposed has an angle of inclination Bof from 30to 70 with respect to the longitudinal axis of said cooling tube.
  • each of said cooling tubes in the region of said inlet end thereof, has a kinked construction in direction toward the material discharge opening of the rotary-kiln, the location of said kink being in an imaginary plane which, as well as the plane wherein said end plate is disposed, extends substantially in vertical direction when the respective material discharge opening in the rotary kiln casing has reached the substantially lowest position thereof beneath the rotary kiln axis.
  • Satellite cooler is formed by a part of the respective cooling tube comprising an end of the tube severed obliquely to the axis of the tube, said end plate being located at the end of the tube and extending perpendicularly to the original axis of the tube, said severed tube end being rotated through an angle of and firmly reconnected at the severed surface thereof to the corresponding severed surface of the remainder of said cooling tube.
  • Satellite cooler according to claim 10 wherein the respective tubular connecting chutes, at the end thereof connecting with the respective cooling tube, extend substantially perpendicularly to the plane of said end plate.
  • Satellitecooler according to claim 11 wherein said material inlet opening has a center which is pivot'ed in a vertical plane through an angle a of between 15 and 45 counterclockwise about the axis of the respective cooling tube and with respect to a plane in which both the axis of the rotary-kiln and the axis of the respective cooling tube are disposed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
US00315557A 1971-12-15 1972-12-15 Satellite cooler for a rotary kiln Expired - Lifetime US3829282A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2162236A DE2162236C3 (de) 1971-12-15 1971-12-15 Satellitenkühler für einen Drehrohrofen

Publications (1)

Publication Number Publication Date
US3829282A true US3829282A (en) 1974-08-13

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Application Number Title Priority Date Filing Date
US00315557A Expired - Lifetime US3829282A (en) 1971-12-15 1972-12-15 Satellite cooler for a rotary kiln

Country Status (23)

Country Link
US (1) US3829282A (fr)
JP (1) JPS5632550B2 (fr)
AR (1) AR193303A1 (fr)
AT (1) AT327774B (fr)
BE (1) BE792880A (fr)
BR (1) BR7208831D0 (fr)
CA (1) CA969812A (fr)
CS (1) CS168618B2 (fr)
DD (1) DD101222A5 (fr)
DE (1) DE2162236C3 (fr)
DK (1) DK130259B (fr)
ES (1) ES409132A1 (fr)
FR (1) FR2165509A5 (fr)
GB (1) GB1405608A (fr)
HU (1) HU176406B (fr)
IT (1) IT974034B (fr)
NL (1) NL7217156A (fr)
PL (1) PL79177B1 (fr)
RO (1) RO69227A (fr)
SU (1) SU573132A3 (fr)
TR (1) TR17559A (fr)
YU (1) YU35050B (fr)
ZA (1) ZA728860B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920381A (en) * 1973-02-01 1975-11-18 Polysius Ag Rotary furnace having a planetary cooler
US4212630A (en) * 1978-07-25 1980-07-15 Bevz Anatoly N Apparatus for removing heat from cylinders of the rotary kiln recuperator cooler
US4222735A (en) * 1977-05-03 1980-09-16 Polysius Ag Cylindrical rotary kiln with satellite cooling tubes
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
US12000655B2 (en) 2018-05-14 2024-06-04 Grenzebach Bsh Gmbh Rotary tube apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2418564C3 (de) * 1974-04-17 1985-05-09 Krupp Polysius Ag, 4720 Beckum Drehrohrofen mit Planetenkühler

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920381A (en) * 1973-02-01 1975-11-18 Polysius Ag Rotary furnace having a planetary cooler
US4222735A (en) * 1977-05-03 1980-09-16 Polysius Ag Cylindrical rotary kiln with satellite cooling tubes
US4212630A (en) * 1978-07-25 1980-07-15 Bevz Anatoly N Apparatus for removing heat from cylinders of the rotary kiln recuperator cooler
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
CS168618B2 (fr) 1976-06-29
PL79177B1 (fr) 1975-06-30
AT327774B (de) 1976-02-25
GB1405608A (en) 1975-09-10
DK130259B (da) 1975-01-27
ES409132A1 (es) 1975-11-16
DE2162236A1 (de) 1973-06-28
FR2165509A5 (fr) 1973-08-03
DK130259C (fr) 1975-06-23
YU35050B (en) 1980-06-30
AR193303A1 (es) 1973-04-11
JPS5632550B2 (fr) 1981-07-28
DE2162236B2 (de) 1975-01-30
BR7208831D0 (pt) 1973-09-20
TR17559A (tr) 1975-07-23
HU176406B (hu) 1981-02-28
ZA728860B (en) 1973-09-26
AU4990872A (en) 1974-06-13
YU302072A (en) 1979-12-31
DE2162236C3 (de) 1979-12-20
DD101222A5 (fr) 1973-10-20
IT974034B (it) 1974-06-20
BE792880A (fr) 1973-03-30
JPS4866617A (fr) 1973-09-12
ATA1052472A (de) 1975-04-15
CA969812A (en) 1975-06-24
RO69227A (fr) 1980-08-15
SU573132A3 (ru) 1977-09-15
NL7217156A (fr) 1973-06-19

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