US3245395A - Heater for gaseous mediums having helically wound pipe coils - Google Patents

Heater for gaseous mediums having helically wound pipe coils Download PDF

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Publication number
US3245395A
US3245395A US347179A US34717964A US3245395A US 3245395 A US3245395 A US 3245395A US 347179 A US347179 A US 347179A US 34717964 A US34717964 A US 34717964A US 3245395 A US3245395 A US 3245395A
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United States
Prior art keywords
coils
convection
radiation
manifold
gaseous medium
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Expired - Lifetime
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US347179A
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English (en)
Inventor
Golibrzuch Werner
Kempen Kreis
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.)
IND CO KLEINEWEFERS KONST
INDUSTRIE-COMPANIE KLEINEWEFERS KONSTRUKTIONS- und HANDELSGESELLSCHAFT M B H Firma
Original Assignee
IND CO KLEINEWEFERS KONST
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Publication of US3245395A publication Critical patent/US3245395A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
    • C10G9/18—Apparatus
    • C10G9/20—Tube furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
    • F22B1/1869—Hot gas water tube boilers not provided for in F22B1/1807 - F22B1/1861
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/22—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight
    • F22B21/26—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight bent helically, i.e. coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/40—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes arranged in a comparatively long vertical shaft, i.e. tower boilers
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration

Definitions

  • This invention relates to a heater for gaseous mediums, wherein the heater has a cylinder or body in which are disposed helically wound pipe coils forming a radiation portion and a convection portion of the heater.
  • the medium to be heated ilows through the pipe coils of the 'convection portion countercurrent to the heating gases which travel longitudinally through the heater, and flows through the pipe coils of the radiation portion in the same direction as that of the heating gases.
  • both the convection .portion and the radiation portion have a single helically wound conduit whose diameter is adapted to a desired output.
  • the medium to be heated flows through a single conduit, first through the helical coil of the convection portion in countercurrent to the heating gases, and then through the helical coil of the radiation portion in the same direction as the heating gases (German P-atent 1,063,618).
  • the medium to be heated must traverse flow paths which are as identical as possible, and must encounter identical pressure conditions along the ilow paths so that there is uniform distribution of the medium to be :heated and no variation in the transmission of heat.
  • My invention resides in a heater having helically wound pipe coils which form a convection portion and a radiation portion, wherein the medium to be heated travels through the convection portion countercurrent to the heating gases ilowiug lengthwise through the heater, and wherein the medium to be heated travels through the radiation portion concurrent with the flow of the heating gases.
  • I use a large number of juxta-positioned pipe coils to achieve a high output, and obtain a substantially uniform distribution of the Imedium to be heated under uniform pressure conditions during flow of the medium through the heater. Additionally, difficulties either in manufacturing or in operation at the points of connection between the distributor and/or.collecting manifolds and the pipe coils of the heater are not encountered.
  • my -invention secures or suspends the pipe coils so that previously-used crosspieces, support brackets and the like are eliminated to a large extent.
  • the spiral tubes of the radiation portion and the convection portion comprise a number of individual helical conduits or pipes disposed in a flow parallel arrangement wherein the pipes of the convection portion extend parallel to one another and the .pipes of the radiation portion do likewise.
  • each of the pipes of the convection portion and of the radiation portion forms a passageway lengthwise and cross-sectionwise for flow of the medium to be heated there-through, which is substantially the same as the passageway formed by each of the other pipes of the convection portion and of the radiation portion, respectively.
  • Such length and cross-section features in each of the convection pipes and in each of the radiation pipes effects the uniform distribution of the medium under uniform pressure conditions.
  • the individual conduits of the convection portion open into an annular manifold disposed at right angles to the length of the heater.
  • these individual helical conduits of the convection portion connect into short vertical or almost vertical pieces of pipe attached to the annular manifold, which pieces of pipe lead into the individual helical conduits.
  • recuperators equipped Iwith straight exchanger tubes it is known to provide an upper and a lower distributor manifold or collector manifold between which are disposed the straight tubes, and through which the medium which is to be hea-ted ows.
  • the ends of the individual helical conduits of the convection portion are connected to the conduits of or to a water drainage manifold of the radiation portion by transmission pipes distributed uniformly along the inner wall of the heater.
  • my invention presents an opportunity for suspending the coils of the radiation portion whereby a uniform distribution of the transfer pipes on a circular plane prevents tipping over of the pipe coil package or the pipe coil group of the radiation portion, and without use of a support bracket. If desired, crosspieces may be used between the individual spirals.
  • the manifold of the convection portion comprise two annular tubes disposed concentrically with one tube within the other.
  • the helically wound individual pipes of the convection portion preferably are arranged in two groups positioned concen-trically with one group within the other. Then, one portion of the transmission pipes between the convection portion and the radiation portion runs along that side Iof the individual conduits of the radiation portion which is adjacent the central axis of the heater, while the other portion of the transfer pipes -is disposed on that side of the individual conduits of the radiation portion which is adjacent the inner wall of the heater.
  • the transmission pipes are divided in half, whereby one half faces the central axis of the heater and is uniformly spaced apart on a smaller circle, and the other half likewise is uniformly spaced apart along a larger circle between the coils of the individual helical conduits of the radiation portion and the inner Wall of the heater.
  • the diameter of the winding of the individual helical conduits of the radiation portion is between that of the smallest and that of the largest diameter of the windings of the two concentrically disposed groups of conduits of the convection portion.
  • the medium which is to be heated When the medium which is to be heated has been heated, it leaves the radiation portion and enters a collecting manifold located on the longitudinal axis of the heater.
  • the individual conduits of the radiation portion lead radially into this collecting manifold and the radially disposed pipe sections used for this purpose are located in the direction of ow of the heating gases in front of a Well-known partition member which directs the hot gases from the radiation portion into the convection portion and cooperates to define the convection portion.
  • outlet pipe for the heated medium extends into connection with the collecting manifold.
  • FIGURE 1 is a longitudinal section
  • FIGURE 2 is a section view along the line II-II of FIGURE 1.
  • a cylindrical heater -body 1 supported on feet 2 and comprising wall portions 3 and 4, forms an inner chamber 5 which is closed at its upper end by a hood 6 from which a heating gas outlet 7 projects.
  • the heater body 1 includes a convection portion A and a radiation portion B and heating gases which iiow through the inner chamber in the direction of arrows P and P are either produced by a burner 8 or are delivered by a conduit (not shown) located in the floor of the heater.
  • a delivery pipe 10 for the medium to be heated passes through hood 6 or through an annular inltermediate portion 9 between the hood and wall portions 3 and 4.
  • This delivery pipe 10 opens yinto two concentric annular rings 1'1 and 12 located in the same horizontal pl-ane of the heater.
  • the rings 11 and 12 together form an annular distributor manifold of the convection portion A.
  • Equally spaced along the periphery of these two annular rings 11 and 12 are branch pipes 13, which are at right angles to or approximately at right angles to the rings 1-1 and 12, and form an entry part of the coiled Y individual conduits 14.
  • Conduits 14 are adjacent a partition member '15 and are concentric with individual conduits 14", the latter, however, being disposed on a larger circle and adjacent to the inner side of wall portion 3.
  • the end of each helically wound individual conduit 14 and 14l of the convection portion opens into vertical transfer or transmission pipes 16 and 16, respectively.
  • FIGURE 2 shows the transfer pipes 16' and 16 evenly distributed on two respective circles and extending into a water drainage manifold 117.
  • Conventional outlet pipe 18 projects from the manifold '17.
  • the drainage manifold 17 may be dispensed rwith, if desired, and in that case, conduits 16' and i16" connect directly into conduits 20 at the elevation of manifold 17.
  • the diameter of the windings of individual conduits 20 is such -that 4these conduits are located in the intermediate space between vertical transfer pipes 16 and 16". Due
  • a heater for a gaseous medium said heater having a shell through at least a portion of which travel hot gases for heating said gaseous medium
  • the invention comprising a radiation portion and a convection portion in said shell, said two portions being in hot gas ow communication for travel of said hot gases from said radiation portion into said convection portion, a rst manifold adapted to be connected to a source of said gaseous medium, a plurality of individual helically wound pipe coils disposed substantially in said convection portion, each connected into said first manifold and formin-g convection coils, a plurality of individual helically wound pipe coils disposed substantially in said radiation portion, being adapted to be connected to an outlet for said gaseous medium and forming radiation coils, a second manifold, conduit means connecting said convection coils and said second manifold for ilow of said gaseous medium from said convection coils into said second manifold, each of said radiation coils having an opening into said second man
  • a heater for a gaseous medium said heater having a shell through at least a portion of which travel hot gases for heating said gaseous medium
  • the invention comprising a radiation portion and a convection portion in said shell, said two portions being in hot gas flow cornmunication for travel of said hot gases from said radiation portion into said convection portion
  • a manifold adapted to be connected to a source of said gaseous medium and comprising at least two tubes spaced apar-t and disposed substantially concentrically with one tube within 4the other, a plurality of individual helically wound pipe coils disposed substantially in said convection portion and forming convection coils
  • said convection coils comprising at least two groups one of whose individual coils are lconnected into one of said two tubes and the other of whose individual coils yare connected into the other of said two tubes, said convection coils being arranged such that said two groups lie concentrically with one group within the other and such that the convection coils in each group are substantially parallel
  • each of said convection coils and each of said radiation coils forming a lpassageway lengthwise and cross-sectionwise for flow of said gaseous medium therethrough which is substantially the same as the passageway formed by each of the other convection coils and radiation coils, respectively.
  • each of said convection coils land each of said radiation coils forming a passageway lengthwise and cross-sectionwise for ow of Vsaid gaseous medium therethrough which is substantially the same as the passageway formed by each of the other convection coils and radiation coils, respectively.
  • each of said convection coils and each of said radiation coils forming a passageway lengthwise and cross-sectionwise for flow of said gaseous medium therethrough which is substantially the same as the passageway formed by each of the other convection -coils and radiation coils, respectively.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Pipe Accessories (AREA)
  • Gas Burners (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
US347179A 1963-03-15 1964-02-25 Heater for gaseous mediums having helically wound pipe coils Expired - Lifetime US3245395A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ0023360 1963-03-15

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DE (1) DE1451231A1 (de)
GB (1) GB1028525A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714596A1 (de) * 1986-05-03 1987-11-05 Vaillant Joh Gmbh & Co Rohrschlange, insbesondere fuer waermetauscher sowie behaelter mit einer solchen rohrschlange
US5353749A (en) * 1993-10-04 1994-10-11 Zurn Industries, Inc. Boiler design
US6044837A (en) * 1998-05-12 2000-04-04 Tyler; Harry Arthur Intertwined helical heat exchanger
US20040259045A1 (en) * 2003-06-19 2004-12-23 Leger Christopher Brian Oxy-fuel fired process heaters
US9279621B2 (en) 2010-08-12 2016-03-08 GM Global Technology Operations LLC Internal heat exchanger for a motor vehicle air-conditioning system
CN108356520A (zh) * 2018-04-09 2018-08-03 宁波连通设备集团有限公司 常压加热炉制造工艺以及用该工艺制造的常压加热炉

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH523468A (de) * 1970-05-08 1972-05-31 Sulzer Ag Mit Feuerung versehener, der Heisswasser- oder Dampferzeugung dienender Wärmeübertrager

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2374882A (en) * 1944-07-08 1945-05-01 Nagel Theodore Steam generator
GB604373A (en) * 1942-09-15 1948-07-02 Ile D Etudes Thermo Mecaniques Improvements in or relating to steam-boilers fed with combustion air at high pressure
US2902981A (en) * 1957-09-20 1959-09-08 Petro Chem Process Company Inc Vertical tube furnace
FR1256104A (fr) * 1960-02-03 1961-03-17 Perfectionnements aux échangeurs de chaleur, en particulier aux réchauffeurs pour liquides organiques et appareils munis de ces perfectionnements

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB604373A (en) * 1942-09-15 1948-07-02 Ile D Etudes Thermo Mecaniques Improvements in or relating to steam-boilers fed with combustion air at high pressure
US2374882A (en) * 1944-07-08 1945-05-01 Nagel Theodore Steam generator
US2902981A (en) * 1957-09-20 1959-09-08 Petro Chem Process Company Inc Vertical tube furnace
FR1256104A (fr) * 1960-02-03 1961-03-17 Perfectionnements aux échangeurs de chaleur, en particulier aux réchauffeurs pour liquides organiques et appareils munis de ces perfectionnements

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714596A1 (de) * 1986-05-03 1987-11-05 Vaillant Joh Gmbh & Co Rohrschlange, insbesondere fuer waermetauscher sowie behaelter mit einer solchen rohrschlange
US5353749A (en) * 1993-10-04 1994-10-11 Zurn Industries, Inc. Boiler design
US6044837A (en) * 1998-05-12 2000-04-04 Tyler; Harry Arthur Intertwined helical heat exchanger
US20040259045A1 (en) * 2003-06-19 2004-12-23 Leger Christopher Brian Oxy-fuel fired process heaters
WO2005001340A1 (en) * 2003-06-19 2005-01-06 Praxair Technology, Inc. Oxy-fuel fired process heaters
US6910878B2 (en) * 2003-06-19 2005-06-28 Praxair Technology, Inc. Oxy-fuel fired process heaters
US9279621B2 (en) 2010-08-12 2016-03-08 GM Global Technology Operations LLC Internal heat exchanger for a motor vehicle air-conditioning system
CN108356520A (zh) * 2018-04-09 2018-08-03 宁波连通设备集团有限公司 常压加热炉制造工艺以及用该工艺制造的常压加热炉
CN108356520B (zh) * 2018-04-09 2020-04-07 宁波连通设备集团有限公司 常压加热炉制造工艺以及用该工艺制造的常压加热炉

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Publication number Publication date
DE1451231A1 (de) 1969-01-16
GB1028525A (en) 1966-05-04

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