US3783936A - Method and apparatus for carrying out a heat exchange between a heat carrier medium and a drum reactor - Google Patents

Method and apparatus for carrying out a heat exchange between a heat carrier medium and a drum reactor Download PDF

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Publication number
US3783936A
US3783936A US00217133A US3783936DA US3783936A US 3783936 A US3783936 A US 3783936A US 00217133 A US00217133 A US 00217133A US 3783936D A US3783936D A US 3783936DA US 3783936 A US3783936 A US 3783936A
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US
United States
Prior art keywords
drum
jacket
heat carrier
valve means
heat transfer
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
US00217133A
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English (en)
Inventor
E Wisz
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.)
Buss AG
Eisenbau Wyhlen AG
Original Assignee
Buss AG
Eisenbau Wyhlen AG
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 Buss AG, Eisenbau Wyhlen AG filed Critical Buss AG
Application granted granted Critical
Publication of US3783936A publication Critical patent/US3783936A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller
    • 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
    • Y10S165/135—Movable heat exchanger
    • Y10S165/139—Fully rotatable
    • Y10S165/156—Hollow cylindrical member, e.g. drum

Definitions

  • the present invention pertains to the indirect heating or cooling of a drum reactor by the exchange of heat from a heat carrier medium.
  • the heat carrier medium is fed to one or more annular distribution chambers fixedly disposed about a stationary outer wall or jacket, thence through openings in the jacket into the annular space between the jacket and the rotatable drum wall, and finally out to one or more annular collection chambers.
  • the distribution and collection chambers are spaced apart from each other and cause the heat carrier medium to flow longitudinally along the drum for more efficient heat exchange.
  • the various inlet and exit ports of the alternate distribution chambers are radially spaced from each other such that the heat carrier flow is both longitudinal and rotational about the drum reactor.
  • the present invention refers to a method for carrying out a heat exchange between an heat carrier medium and a indirectly heatable or coolable drum reactor equipped with a coaxially arranged jacket, the heat carrier medium being circulated through heating or cooling means.
  • a further object of this invention is to propose an apparatusfor carrying out this method, such apparatus comprising a sealed jacket coaxially arranged about a drum reactor as well as means for heating or cooling a heat carrier medium.
  • drum reactors are used in a number of various technical processes and they are constructed as furnance, calcinator, dryer or cooling apparatus, making it thereby necessary to feed or to carry off heat.
  • drum reactors There are a number of well known advantages, in connection with such drum reactors, i.e. simple and inexpensive construction, well predictable and controllable reaction, etc.
  • drum reactors can be directly heated by means of hot steam or hot cumbustion gases, or directly cooled by of blowing the same with a suitable cooling medium.
  • a reaction'be performed in vacuum or in a protective gas envelope the reaction chamber having to be sealed against the surrounding air or gas, thus requiring an indirect heating or cooling.
  • a further object of the invention is to improve the methods of indirect heating or cooling already known and to avoid the known disadvantages usually occuring in connection with indirect heating or cooling.
  • Drum reactors have already been proposed which comprise a heating or coolingjacket arranged coaxially to the drum reactor and which are immersed in a tank by one third of their volume, the tank containing a heat carrier fluid.
  • a number of catch baffles on the outer wall of the drum reactor which carry along, during the rotation of the drum reactor, a certain amount of the heat carrier fluid and splash that part of the wall of the drum reactor which is not immersed in the heat carrier fluid.
  • the wall of the drum reactor typically is blown on by directing the medium through annular pipes disposed in parallel.
  • the proposed method comprises the steps of leading said heat carrier medium from said heating or cooling means to a first plenum chamber circumferentially arranged around said jacket of said drum reactor, feeding said heat carrier medium tangentially or radially into said first plenum chamber, leading said heat carrier medium from said first plenum chamber into a chamber between said jacket and said drum reactor and conducting said heat carrier medium along at least a part of the length of the outer wall of said drum reactor, carrying off said heat carrier medium from said chamber between said jacket and said drum reactor into a second plenum chamber circumferentially arranged around said jacket and conducting said heat carrier medium off said second plenum chamber in a tangential or radial direction.
  • a further object of the present invention is to propose an apparatus for carrying out the just described method, said apparatus comprising a drum reactor, a jacket arranged coaxially to said drum reactor and de fining together with the outer wall of said drum reactor a sealed chamber, further comprising means for heating or cooling a heat carrier medium and means for circulating said heat carrier medium, further comprising at least two annular chambers arranged circumferentially around said jacket and spaced apart from each other, each of said annular chambers being equipped with a connection piece radially or tangentially attached to said annular chambers, said annular chambers communicating with said chamber between said jacket and said drum reactor through a number of openings in said jacket, which opening are arranged along its circumference.
  • FIG. 1 shows a schematic view of an installation comprising a drurn reactor and means for heating a heat carrier medium
  • FIG. 2 shows a side elevation of an example of execution of the proposed apparatus, partially cut, and
  • FIG. 3 shows a section along the lines AA of FIG. 2.
  • the drum reactor 17 comprises two races llS arranged in the region of both ends of the reactor 17, said races 15 resting on rolls 16 which are rotatably mounted on suitable supporting blocks on the floor.
  • One end of the drum reactor is equipped with a gear rim l2 meshing with a gear wheel 13, which latter is mounted on the driven shaft of a electric motor 13', thus enabling the drum reactor 17 to be rotated.
  • the reactor 17 is enclosed by a two-part jacket ll, 1' which is supported by a number of stands 14. Further, there are provided a number of annular chambers 2 and 3 which are circumferentially arranged around the jacket ll, 1 and which are spaced from each other by equal distance. Each of these annular chambers 2 and 3 have attached thereto a connection piece for the connection of a heat carrier medium tube.
  • FIG. 1 there is provided a mixing chamber 5, to which a burner 4 is connected.
  • the burner 4 heats the gases contained in mixing chamber 5, which gases serve as the heat carrier medium for the system.
  • the gases escape from the chamber 5 escape through a pipe 24.
  • the pipe 24 is connected via control members 18, to every second of the annular chambers 3.
  • the remaining annular chambers 2 are connected via second control members 19 to an exhaust pipe 25, which leads to a ventilator 6, which feeds the cooled gases from the annular chambers 2 back to the mixing chamber 5.
  • a part of these cooled gases escape to the atmosphere, after passage through ventilator 6, by means of a throttle or valve 7.
  • An exemplary process which the described apparatus may perform is as follows: In the mixing chamber 5, the gases are heated up by the burner 4 and enter under pressure the pipe 24. After having passed the control members 18, they enter the annular chambers 3 in radial or tangential direction. In the interior of the charm bers 3, the bases are allowed to expand so that practically all their dynamic flow pressure is transferred to static pressure, with the control members 18 regulated in such a way that there is a higher flow pressure in the pipe 24 which drops to near Zero in the chambers 3. The hot gases with relatively high static pressure and nearly zero flow then pass the slots 21 in the wall of the jacket 1, 1' and enter the chamber between jacket and drum reactor. As can be seen from N6.
  • the gas stream divides, after having passed the slots 21, into two parts, each of which flowing in an opposite direction towards the next slots 22, thereby heating up the wall of the drum reactor 17.
  • the ventilator 6 In the annular chambers 2 surrounding the slots 22, there is a slight negative pressure generated by the ventilator 6 and controllable by the control members 19.
  • the cooled-down gases pass now through the slots 22 and collect in the annular chambers 2, from where they are drawn off gaining in velocity by the transformation of static pressure to dynamic flow pressure through pipe 25 back into the mixing chamber 5. In order to assure a continuous renewal of the circulating gases, a part of them is blown off through the throttle 7. v
  • Heat exchange apparatus for a hollow, cylindrical drum comprising;
  • roller means supporting each end of said drum on said frame for rotation about the axis thereof;
  • a cylindrical jacket mounted on said frame and coaxially disposed about the exterior wall of said drum, said jacket defining together with said exterior wall of said drum a sealed, elongated annular cavity;
  • each of said annular chambers communicating with said cavity through a plurality of openings in said jacket spaced about the entire circumference thereof;
  • port means radially extending from each of said annular chambers and communicating interiorly thereof;

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Drying Of Solid Materials (AREA)
US00217133A 1971-01-13 1972-01-12 Method and apparatus for carrying out a heat exchange between a heat carrier medium and a drum reactor Expired - Lifetime US3783936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT22671A AT313855B (de) 1971-01-13 1971-01-13 Einrichtung zur Durchführung des Wärmeaustausches zwischen einem Wärmeträgermedium und einem Drehrohr

Publications (1)

Publication Number Publication Date
US3783936A true US3783936A (en) 1974-01-08

Family

ID=3484889

Family Applications (1)

Application Number Title Priority Date Filing Date
US00217133A Expired - Lifetime US3783936A (en) 1971-01-13 1972-01-12 Method and apparatus for carrying out a heat exchange between a heat carrier medium and a drum reactor

Country Status (12)

Country Link
US (1) US3783936A (de)
JP (1) JPS4829042A (de)
AT (1) AT313855B (de)
BE (1) BE777963A (de)
CA (1) CA954119A (de)
CH (1) CH533823A (de)
DE (1) DE2201148A1 (de)
ES (1) ES399132A1 (de)
FR (1) FR2121729B1 (de)
GB (1) GB1367967A (de)
IT (1) IT946502B (de)
NL (1) NL7200488A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171265A (en) * 1974-10-02 1979-10-16 Saint-Gobain Industries Suppression of pollution in mineral fiber manufacture
US4721575A (en) * 1986-04-03 1988-01-26 Vertech Treatment Systems, Inc. Method and apparatus for controlled chemical reactions
US4738309A (en) * 1984-09-13 1988-04-19 Heinz Schilling Kg Gas/liquid or gas/gas exchanger
US4869833A (en) * 1986-04-03 1989-09-26 Vertech Treatment Systems, Inc. Method and apparatus for controlled chemical reactions
NL9301056A (nl) * 1993-06-17 1995-01-16 Cebeson Beheer B V Inrichting voor het koelen van slachtafval.
CN113819756A (zh) * 2021-09-18 2021-12-21 成都新仪征环保科技有限公司 一种回转窑用低噪声风冷散热装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057180A (ja) * 1983-09-06 1985-04-02 株式会社新柴設備 回転乾燥装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2214874A (en) * 1936-07-16 1940-09-17 Manufactures De Glaces Et Prod Apparatus for controlling the distortion of rolls
US2956348A (en) * 1956-08-06 1960-10-18 American Viscose Corp Drying roll

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2214874A (en) * 1936-07-16 1940-09-17 Manufactures De Glaces Et Prod Apparatus for controlling the distortion of rolls
US2956348A (en) * 1956-08-06 1960-10-18 American Viscose Corp Drying roll

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171265A (en) * 1974-10-02 1979-10-16 Saint-Gobain Industries Suppression of pollution in mineral fiber manufacture
US4738309A (en) * 1984-09-13 1988-04-19 Heinz Schilling Kg Gas/liquid or gas/gas exchanger
US4721575A (en) * 1986-04-03 1988-01-26 Vertech Treatment Systems, Inc. Method and apparatus for controlled chemical reactions
US4869833A (en) * 1986-04-03 1989-09-26 Vertech Treatment Systems, Inc. Method and apparatus for controlled chemical reactions
NL9301056A (nl) * 1993-06-17 1995-01-16 Cebeson Beheer B V Inrichting voor het koelen van slachtafval.
CN113819756A (zh) * 2021-09-18 2021-12-21 成都新仪征环保科技有限公司 一种回转窑用低噪声风冷散热装置
CN113819756B (zh) * 2021-09-18 2023-09-22 成都新仪征环保科技有限公司 一种回转窑用低噪声风冷散热装置

Also Published As

Publication number Publication date
CH533823A (de) 1973-02-15
IT946502B (it) 1973-05-21
BE777963A (fr) 1972-05-02
GB1367967A (en) 1974-09-25
DE2201148A1 (de) 1972-08-03
CA954119A (en) 1974-09-03
ES399132A1 (es) 1975-12-16
NL7200488A (de) 1972-07-17
JPS4829042A (de) 1973-04-17
AT313855B (de) 1974-03-11
FR2121729B1 (de) 1976-07-23
FR2121729A1 (de) 1972-08-25

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