DE1967259U - HEAT EXCHANGERS IN WASTE SYSTEMS. - Google Patents

HEAT EXCHANGERS IN WASTE SYSTEMS.

Info

Publication number
DE1967259U
DE1967259U DER35239U DER0035239U DE1967259U DE 1967259 U DE1967259 U DE 1967259U DE R35239 U DER35239 U DE R35239U DE R0035239 U DER0035239 U DE R0035239U DE 1967259 U DE1967259 U DE 1967259U
Authority
DE
Germany
Prior art keywords
guide ribs
sludge
heat exchanger
heat exchangers
digester
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
Application number
DER35239U
Other languages
German (de)
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.)
FA WILHELM ROEDIGER
Original Assignee
FA WILHELM ROEDIGER
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 FA WILHELM ROEDIGER filed Critical FA WILHELM ROEDIGER
Priority to DER35239U priority Critical patent/DE1967259U/en
Publication of DE1967259U publication Critical patent/DE1967259U/en
Expired legal-status Critical Current

Links

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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/06—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits forming part of, or being attached to, the tank containing the body of fluid
    • 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
    • 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
    • F28D7/026—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 and formed by bent members, e.g. plates, the coils having a cylindrical configuration
    • 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
    • F28D7/10—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 arranged one within the other, e.g. concentrically
    • F28D7/106—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 arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/424—Means comprising outside portions integral with inside portions
    • F28F1/426—Means comprising outside portions integral with inside portions the outside portions and the inside portions forming parts of complementary shape, e.g. concave and convex

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Paper (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Treatment Of Sludge (AREA)

Description

PATENTANWALT DIPL-INQ. JOACHIM STRASSEPATENT Attorney DIPL-INQ. JOACHIM STREET

645 HANAU · POSTFACH 793 · TELEFON 20803 · TELEQRAMMEs HANAWPATENT645 HANAU POST BOX 793 TELEPHONE 20803 TELEQRAMMS HANAWPATENT

Wilhelm Roediger 30. Mai 1967Wilhelm Roediger May 30, 1967

645 Hanau/Main Str/Bt - 8347645 Hanau / Main Str / Bt - 8347

Wärmeaustauscher in KläranlagenHeat exchangers in sewage treatment plants

Die !feuerung bezieht sich auf einen Wärmeaustauscher in Form, eines doppelv/andigen Rohrsystems zum Beheizen von Klärschlamm.The! Firing refers to a heat exchanger in the form, a double-walled pipe system for heating sewage sludge.

Die Kläranlagen sind mit einem Rohrsystem zur Zuführung des Schlammes zu den Faulbehältern sowie zum Umpumpen des Schlammes aus den Faulbehältern in die Faulbehälter versehen. Die bei der Abwasserreinigung durch Sedimentieren anfallenden Feststoffe Frischschlamm genannt - sind sehr sperrig und gasend. Bei der bekanntermaßen erwünschten anaeroben alkalischen Ausfaulung des ßchlanimes bei etwa 30° C soll der Frischschlamm möglichst vor der Einbringung in den Faulbehälter und nicht erst im Faulbehälter erwärmt werden, damit der Faulprozeß im Frischschlamm möglichst bald einsetzt, und um die Faulungsbakterien im Faulbehälter nicht durch einen kalten Zugabestoß zu stören, der beim Zugeben von kaltem Frischschlamm entsteht. V,egen seiner Sperrigkeit und wegen der Gasbildung ist es zweckmäßig, die Aufwärmung durch beheizte Ummantelung der möglichst geradlinig zu führenden Beschickungsleitung vorzunehmen, also keine Rohrschlangenform zur Vergrößerung der 7/ärmeaustauschfläche zv?ecks Leistungsvergrößerung zu wählen. Diese Überlegungen sind bekannt und bereits verwirklicht worden. Die Austauschfläche wird von warmem Wasser, von Dampf oder von anderen Warmeträgern beheizt. Mit derselben Einrichtung wird zweckmäßigerweise gleichzeitig oder zeitlich hintereinander mitThe sewage treatment plants are equipped with a pipe system for feeding the Provide sludge to the digester and for pumping the sludge from the digester into the digester. The at the Wastewater treatment through sedimentation of solid matter, fresh sludge called - are very bulky and gassing. In the known anaerobic alkaline digestion of the ßchlanimes at around 30 ° C, the fresh sludge should if possible before Bringing them into the digester and not first heated in the digester so that the digestion process in the fresh sludge is as possible soon sets in, and not about the putrefaction bacteria in the digester to be disturbed by a cold surge that occurs when cold fresh sludge is added. V, because of its bulkiness and because of For gas formation, it is advisable to warm up by means of a heated sheathing of the feed line, which is to be guided as straight as possible, i.e. no coiled tubing for enlargement to choose the 7 / heat exchange surface in order to increase the capacity. These considerations are known and have already been implemented. The exchange surface is made up of warm water, steam or other heat carriers heated. With the same facility will expediently at the same time or one after the other with

dem Frisch.sci3.lamm auch faulender Schlamm aus dem Faulbehälter zu dessen Warmhaltung erwärmt. Der faulende Schlamm wird hierbei aus dem Faulbehälter entnommen und nach der Erwärmung vjieder dem Paulbehälter zugeführt«the fresh.sci3.lamm also feeds putrefactive sludge from the digester keeping it warm. The rotting sludge is hereby made taken from the digester and, after heating, from the Paul tank supplied «

Es ist nun Aufgabe der vorliegenden !Teuerung, zu einer Verbesserung des Wärmedurchganges innerhalb der Wärmeaustauschfläche einer · Schlaiambeheizung unter Berücksichtigung aller besonderen Probleme beizutragen. Bei Wärmeaustauschern für Schlamm besteht die grundsätzliche Schwierigkeit, daß Schlamm im Gegensatz zu anderen flüssigen Medien nicht zum besseren Wärmeübergang in seiner Oberfläche beliebig vergrößert v/erden kann. Das Problem wird allgemein nach der feuerung für einen Wärmeaustauscher in Form eines doppelwandigen Hohrsystems zur Beheizung von Klärschlamm dadurch gelöst, daß im inneren Rohr des doppelv/andigen Rohr sy stems schraubenlinienförmige Leitrippen angeordnet sind.It is now the task of the present inflation to improve the heat transfer within the heat exchange surface of a Hose heating taking into account all special problems to contribute. The basic principle applies to heat exchangers for sludge Difficulty that, in contrast to other liquid media, sludge does not allow for better heat transfer in its surface can be enlarged as desired. The problem becomes general after firing for a heat exchanger in the form of a double-walled one Hohr system for heating sewage sludge solved by that in the inner tube of the double-sided tube system helical Guide ribs are arranged.

Durch eine solche Anordnung von Leitrippen wird der Schleiamweg verlängert, und der Schlamm wird intensiver mit dem im Zwischenraum der xiohre strömenden Heiziaedium in Verbindung gebracht. Der Schlamm wird im inneren Rohr in eine drehende Bewegung versetzt, wodurch nahezu alle Partikelchen mit der Rohrwandung in Berührung kommen. Die Leitrippen können eine durchgehende Schraubenlinie bilden oder absatzweise angeordnet sein. Im letzten Fall teilen die einzelnen Abschnitte an ihren jeweiligen stromwärts gerichteten Anfängen den Schlammstrom günstig auf. Die Anfänge der Leitrippenabschnitte können langsam ansteigen und erreichen dann erst ihre volle Hohe*Such an arrangement of guide ribs creates the Schleiamweg lengthened, and the sludge is brought more intensely into contact with the heating medium flowing in the space between the xiohre. the Sludge is set in a rotating motion in the inner pipe, which means that almost all the particles come into contact with the pipe wall come. The guide ribs can form a continuous helical line or be arranged in steps. In the latter case, share the individual sections at their respective downstream Start the sludge flow cheaply. The beginnings of the guide rib sections can rise slowly and only then reach their full height *

Weitere Einzelheiten, .Merkmale und Vorteile ergeben sich aus der folgenden Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispiels. Further details, features and advantages emerge from the following description of an embodiment shown in the drawing.

Bs zeigenBs show

Fig. 1 eine perspektivische Ansicht mit teilweise weggebrochenen Teilen einer Anordnung zur Schiammfuhrung undFig. 1 is a perspective view with partially broken away parts of an arrangement for Schiammführung and

Fig. 2 eine Schnittansicht hierzu.Fig. 2 is a sectional view of this.

Innerhalb eines liohres 10 ist ein weiteres Rohr 12 konzentrisch angeordnet. Durch das Innere des Hohres 12 wird der Schlamm geleitet. Der Hohlraum zwischen den Bohren 10 und 12 dient zur Führung des Heizmediums und damit zur Wärmeübergabe an den Schlamm. Das Heizmedium strömt durch einen Einführstutzen 16 in diesen Kohlraum ein und erfährt hierbei eine erste Geschwindigkeitserhöhung durch eine Querschnittsverringerung (vgl. Fig. 2). Die in der Zeichnung dargestellten Verhältnisse sind keinesfalls maßstäblich zu verstehen. In Wirklichkeit- ist z.B. auch die Durchmet>serdifferenz zwischen den Hohren 10 und 12 normalerweise wesentlich geringer als in den Fig. 1 und 2 dargestellt.Within a tube 10, another tube 12 is arranged concentrically. The sludge is passed through the interior of the tube 12. The cavity between the bores 10 and 12 is used to guide the heating medium and thus to transfer heat to the mud. The heating medium flows through an inlet connection 16 into this carbon chamber and experiences a first increase in speed due to a reduction in cross section (cf. FIG. 2). The relationships shown in the drawing are by no means to be understood to be true to scale. In reality, for example, the diameter difference between the tubes 10 and 12 is normally much smaller than shown in FIGS. 1 and 2.

Im Innern des Rohres 12 sind Leitrippen 18 schraubenlinienförmig durch das Rohr geführt. Diese Leitrippen 18 dienen dazu, das innerhalb dieses Rohres fließende Füllgut der Faulbehälter in eine schraubenlinienförmlge Bewegung zu versetzen. Diese schraubenlinienformige Umwälzung des Füllgutes wird dazu beitragen, daß alle Partikel des Füllgutes mindestens einmal mit der Wand desIn the interior of the tube 12, guide ribs 18 are helical passed through the pipe. These guide ribs 18 are used to keep the inside this pipe to set the contents of the digester in a helical movement. This helical Circulation of the product will help that all particles of the product at least once with the wall of the

Rohres 12 in Berührung koiMien, Es findet eine intensivere-Wärmeübergabe als bei einfach durchströmenden Medien statt.Tube 12 in contact koiMien, It takes place a more intensive heat transfer than with simply flowing media.

Statt der dargestellten durchgehenden Leitrippen 18 Icönnen auch abschnittweise Leitrippen angeordnet werden, die sich in einer gedachten Schraubenlinie hintereinander- und in Abständen zueinander anschließen. Hierbei können diese abschnittweisen Leitrippen an ihren jeweiligen Anfängen flach beginnnert und allmählich ansteigen, bis sie ihre volle Höhe erreichen, die der Höhe der dar~ gestellten Leitrippen 18 entspricht.Instead of the illustrated continuous guide ribs 18 I can also section-wise guide ribs are arranged, which are in an imaginary helical line one behind the other and at a distance from one another connect. Here, these section-wise guide ribs can begin flat at their respective beginnings and gradually rise, until they reach their full height, that of the height of the dar ~ provided guide ribs 18 corresponds.

Schut zansprüche:Protection claims:

Claims (3)

y: fA^"''*'"*' :'! :ΡΧΒδΐ PATENTANWALT DIPL.-INQ. JOACHIM STRASSE 645HANAU-POSTFACHWTELEFOMiOSOS-TELEQRAMMeIHANAUPATENT Wilhelm Roediger 30. Mai 1967 Hanau/Main ' Str/Bt - 834-7 Schutzansprüche :y: fA ^ "'' * '" *': '! : ΡΧΒδΐ PATENTANWALT DIPL.-INQ. JOACHIM STRASSE 645HANAU-POSTFACHWTELEFOMiOSOS-TELEQRAMMeIHANAUPATENT Wilhelm Roediger May 30, 1967 Hanau / Main 'Str / Bt - 834-7 Protection claims: 1. Wärmeaustauscher in Form eines doppelwandigen Rohrsystems zum Beheizen von Klärschlamm, dadurch gekennzeichnet , daß im inneren Rohr (12) schraubenlinienförmige Leitrippen (18) angeordnet sind.1. Heat exchanger in the form of a double-walled pipe system for Heating sewage sludge, characterized that in the inner tube (12) helical guide ribs (18) are arranged. 2. Wärmeaustauscher nach Anspruch 1, dadurch, gekennzeichnet , daß die schraubenlinienförmigen Leitrippen (18) im inneren Rohr (12) absatzweise angeordnet sind.2. Heat exchanger according to claim 1, characterized in that that the helical Guide ribs (18) are arranged in sections in the inner tube (12). 3. wärmeaustauscher nach Anspruch 2, dadurch gekennzeichnet , daß die absatzweise angeordneten Leitrippen (18) an ihren jeweiligen Anfängen flach beginnen und allmählich bis zu ihrer vollen Hohe ansteigen.3. heat exchanger according to claim 2, characterized that the intermittently arranged guide ribs (18) begin flat at their respective beginnings and gradually rise to their full height.
DER35239U 1967-06-01 1967-06-01 HEAT EXCHANGERS IN WASTE SYSTEMS. Expired DE1967259U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER35239U DE1967259U (en) 1967-06-01 1967-06-01 HEAT EXCHANGERS IN WASTE SYSTEMS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER35239U DE1967259U (en) 1967-06-01 1967-06-01 HEAT EXCHANGERS IN WASTE SYSTEMS.

Publications (1)

Publication Number Publication Date
DE1967259U true DE1967259U (en) 1967-08-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DER35239U Expired DE1967259U (en) 1967-06-01 1967-06-01 HEAT EXCHANGERS IN WASTE SYSTEMS.

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Country Link
DE (1) DE1967259U (en)

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