DE10241276A1 - Heat exchanger for maintaining constant temperature in polymers has a heated internal torpedo with ends matched to those of the exchanger body ends forming a polymer flow channel - Google Patents
Heat exchanger for maintaining constant temperature in polymers has a heated internal torpedo with ends matched to those of the exchanger body ends forming a polymer flow channel Download PDFInfo
- Publication number
- DE10241276A1 DE10241276A1 DE2002141276 DE10241276A DE10241276A1 DE 10241276 A1 DE10241276 A1 DE 10241276A1 DE 2002141276 DE2002141276 DE 2002141276 DE 10241276 A DE10241276 A DE 10241276A DE 10241276 A1 DE10241276 A1 DE 10241276A1
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- DE
- Germany
- Prior art keywords
- heat exchanger
- flow
- torpedo
- container
- funnel
- 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.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- 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
- F28D7/103—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 more than two coaxial conduits or modules of more than two coaxial conduits
-
- 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
- F28D7/12—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 the surrounding tube being closed at one end, e.g. return type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00054—Controlling or regulating the heat exchange system
- B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
- B01J2219/00058—Temperature measurement
- B01J2219/0006—Temperature measurement of the heat exchange medium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00054—Controlling or regulating the heat exchange system
- B01J2219/00056—Controlling or regulating the heat exchange system involving measured parameters
- B01J2219/00058—Temperature measurement
- B01J2219/00063—Temperature measurement of the reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00081—Tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
- B01J2219/00094—Jackets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00164—Controlling or regulating processes controlling the flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/18—Details relating to the spatial orientation of the reactor
- B01J2219/182—Details relating to the spatial orientation of the reactor horizontal
-
- 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
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0077—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for tempering, e.g. with cooling or heating circuits for temperature control of elements
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Die Erfindung betrifft einen Wärmetauscher zur Temperaturkonstanthaltung von insbesondere hochviskosen Polymerisaten, die von einem Polymerisationsreaktor gegf. über Filter zur Weiterverarbeitung zu fördern sind, bestehend aus einem rohrförmigen, außenbeheizbaren, Behälter mit an dessen Enden angeordneten, durchmesserkleineren, ebenfalls von außen beheizbaren Zu- und Abströmanschlüssen und mit Einrichtungen zur sensorgeregelten Zuleitung von Heizmedium in die von diesem zu durchströmenden Räume.The invention relates to a heat exchanger for Keeping the temperature constant, in particular of highly viscous polymers, compared to a polymerization reactor. via filters for further processing to promote are composed of a tubular, heated externally, container with smaller diameters arranged at its ends, also from Outside heated inflow and outflow connections and with devices for sensor-controlled supply of heating medium into the flow through it Rooms.
Derartige Wärmetauscher sind für den genannten, speziellen Zweck bekannt und in Benutzung, so daß es diesbezüglich keines besonderen druckschriftlichen Nachweises bedarf, der im übrigen auch nicht erbracht werden kann, ganz abgesehen davon, daß allen Wärmetauschern, wie sie konstruktiv in allen möglichen Varianten auch ausgeführt sein mögen, das Prinzip zugrundeliegt, am Wärmetausch beteiligte Medien im Gleich-, Gegen- oder Kreuzstrom, von Wärmetauschflächen getrennt, an diesen Flächen unter einem gewissen Förderdruck vorbeizuleiten. Soweit einleitend von "gegf. über Filter" die Rede ist, nimmt dies auf kontinuierlich arbeitende Polymerisationsreaktoren Bezug, denen aus bekannten Gründen Filter bzw. ganze Filtergruppen nachgeschaltet werden müssen.Such heat exchangers are for the special purpose known and in use, so that there is none in this regard special printed evidence is required, which is also the case cannot be provided, quite apart from the fact that everyone heat exchangers, as they are constructive in all sorts Variants also executed may be, underlying the principle involved in the heat exchange Media in cocurrent, countercurrent or crossflow, separated from heat exchange surfaces, on these surfaces below a certain delivery pressure pass route. As far as introductory "filter" is concerned, takes this relates to continuously operating polymerization reactors, those for known reasons Filters or entire filter groups must be added.
Für den vorliegenden, speziellen Zweck geht es weniger darum, große Wärmemengen von einem Medium auf ein anderes möglichst optimal zu übertragen, sondern hinsichtlich ihres Temperaturniveaus hoch empfindliche, hochviskose Polymerisate auf ihrem Weg vom Polymerisationsreaktor zur Weiterverarbeitung auf ihrer Temperatur zu halten, mit der sie aus dem Reaktor kommen und die in der Regel im Bereich von 280 bis 290 °C liegt, mit der sie auch weiterverarbeitet werden. Insoweit sind Wärmetauscher der eingangs genannten Art auch mit den vorerwähnten Einrichtungen zur sensorgeregelten Zuleitung von Heizmedium in die von diesem zu durchströmenden Räumen ausgestattet, d.h., via Heizmediumszufuhrregelung wird, entsprechend gesteuert, nur dafür gesorgt, daß das Temperaturniveau gehalten wird.For The present special purpose is less about large amounts of heat to transfer from one medium to another as optimally as possible, but rather sensitive to their temperature level, highly viscous polymers on their way from the polymerization reactor for further processing to maintain their temperature at which they are made come to the reactor and which is usually in the range from 280 to 290 ° C. with which they are also processed. To this extent, heat exchangers are the type mentioned above also with the above-mentioned devices for sensor-controlled Supply of heating medium to the rooms through which it flows, i.e. controlled via the heating medium supply control, just made sure that this Temperature level is maintained.
Beim Wärmetauscher der eingangs genannten Art ist der von Einbauten freie Innenraum an seinen die durchmessereduzierten Zuund Abfuhranschlüsse aufweisenden Enden durch Querwände abgeschlossen, die innenseitig die Form einer relativ steilen Rundumschulter haben, was sowohl zu- als auch abströmseitig für das durchströmende Polymerisat zu Rundum-Totraumzwickeln führt und was bei weniger kritischen Produkten in der Regel auch keine Rolle spielt, wohl aber beim vorliegenden Produkt. Da die in die Toträume gelangten Produktanteile nur mehr oder weniger langsam in ihrem Grenzschichtbereichen zum durchströmenden Produkt ausgetragen werden, sind die praktisch in den Toträumen stehenden Produktanteile über längere, kritische Zeiträume einer Verweilzeit- und Temperaturkontrolle entzogen, was zu einer mehr oder weniger starken Rückbildung bzw. quasi Zersetzung des Produktes in Richtung Monomeren führt. Die dabei entstehenden Monomeren bzw. niedriger Polymeren unterliegen dabei aber auch im oben erwähnten Grenzschichtbereich einem Austrag aus dieser kritischen Zone und "verwässern" gewis sermaßen den Polymeraustrag am Ende das Wärmetauschers mit entsprechenden Negativauswirkungen bei der Weiterverarbeitung, d.h., im Falle des Verspinnens können die erzeugten Kunststofffäden reißen oder bei einer Folienverarbeitung können Blasen entstehen. Mit Rücksicht auf die heute immer noch bei der Polymerherstellung und -verarbeitung verwendeten Wärmetauscher der bspw. eingangs genanten Art, muß angenommen werden, daß diese Zusammenhänge, aus welchen Gründen auch immer, nicht erkannt bzw. wahrgenommen worden sind. Dies gilt auch für ebenfalls auf diesem Gebiet zum Einsatz kommende Wärmetauscher, die innen dicht an dicht mit mehreren Paketen von Heizmedium führenden, schräg gestellten Rohrschlangen bestückt sind, zwischen denen trotz Schrägstellung der Bildung von Toträumen bzw. Strömungsschatten Tür und Tor geöffnet sind.In the case of the heat exchanger mentioned above Art is the interior free of built-in at its reduced diameter Inlet and outlet connections having ends through transverse walls completed, the inside of the shape of a relatively steep all-round shoulder have something both on the inflow and outflow side for the polymer flowing through leads to all-round dead space gussets and what usually doesn't matter with less critical products plays, but probably with the present product. Because they got into the dead spaces Product shares only more or less slowly in their boundary layer areas to flow through Product are discharged, are practically in the dead spaces Product shares over longer, critical periods a residence time and temperature control, which leads to a more or less severe regression or virtually decomposes the product in the direction of monomers. The The resulting monomers or lower polymers are subject to this but also in the above Boundary layer area a discharge from this critical zone and to a certain extent "water down" the Polymer discharge at the end of the heat exchanger with corresponding negative effects in further processing, i.e. in case of spinning the plastic threads produced tear or bubbles can form during film processing. With consideration to those still in polymer manufacturing and processing today used heat exchanger of the type mentioned at the beginning, it must be assumed that this Relationships, for whatever reasons also, have not been recognized or perceived. this applies also for heat exchangers also used in this area, the inside, close together with several packages of heating medium, aslant provided coils are between them despite the slant the formation of dead spaces or flow shadow Door and Gate opened are.
Der Erfindung liegt, ausgehend von einem Wärmetauscher der eingangs genannten Art, die Aufgabe zugrunde, diesen auf einfache Weise derart umzugestalten und zu verbessern, daß trotz Anordnung einer Innenheizung für das durchströmende Produkt optimale Durchströmbedingungen unter Ausschluß von Toträumen erreichbar sind.The invention is based on a heat exchanger of the type mentioned, the task is based on this simple Way to remodel and improve such that despite the arrangement of an internal heater for the flowing product optimal flow conditions to the exclusion of dead spaces are reachable.
Diese Aufgabe ist mit einem Wärmetauscher der eingangs genannten Art nach der Erfindung dadurch gelöst, daß axial und zentral im rohrförmigen Behälter ein mit der Wand des Behälters einen ringzylindrischen Durchströmkanal begrenzender Verdrängerkörper angeordnet ist, daß der Verdrängerkörper an seinen beiden Enden in seiner Form strömungsgünstig an eine im Behälter angeordnete.zuströmseitige Diffusorausbildung und abströmseitig an eine Trichterausbildung angepaßt ist, daß ,der Verdrängerkörper im Behälter mittels strömungsschattenfrei umströmbarer Stege gehalten ist und daß der Verdrängerkörper hohl ausgebildet und mit Vor- und Rücklaufanschlüssen für das Heizmedium versehen ist.This task is with a heat exchanger initially mentioned type according to the invention in that axially and centrally in the tubular container with the wall of the container an annular cylindrical flow channel limiting displacement body arranged is that the Displacer its two ends in its shape streamlined to an inflow-side Diffuser design and downstream is adapted to a funnel training that the displacement body in container by means of flow shadow-free umströmbarer Web is held and that the displacer is hollow and with supply and return connections for the heating medium is provided.
Vorteilhafte und noch näher zu erläuternde Weiterbildungen ergeben sich nach den Unteransprüchen.Advantageous further developments to be explained arise from the subclaims.
Was dabei das Merkmal "strömungsschattenfrei umströmbare Stege" betrifft, so sind darunter Stege mit Querschnitten zu verstehen, die bspw. einer schlanken Ellipse oder auch einer elliptischen aber beidendig spitz auslaufenden Form entsprechen und die mit ihrer Hauptachse in Strömrichtung des Produktes an ihrer Anordnungsstelle orientiert sind.What the characteristic "flow shadow free flow around Webs ", this means webs with cross sections, for example a slim ellipse or an elliptical correspond to both ends tapering shape and with their Main axis in the flow direction of the Product are oriented to their location.
Durch die erfindungsgemäße Ausbildung wird der im Zuströmanschluß eintretende Produktstrom ohne Totraumbildung in einen zylindrischen Strom überführt und am anderen Ende ebenso strömungsgünstig wieder in den Abströmanschluß eingeleitet, wobei der dies bewirkende Verdrängerkörper gleichzeitig als Innenheizer ausgenutzt ist. Da dieser Verdrängerkörper in seiner axial zentralen Zuordnung gehalten werden muß, sind die dafür notwendigen Stege, wo diese auch immer im ringzylindrischen Durchströmkanal angeordnet sein mögen, wie im vorherigen Absatz erläutert, ausgebildet.The product according to the invention becomes the product entering the inflow connection stream converted into a cylindrical stream without formation of dead space and at the other end just as streamlined again into the outflow connection, the displacer causing this being simultaneously used as an internal heater. Since this displacer must be kept in its axially central assignment, the webs necessary for this are formed wherever they may be arranged in the ring-cylindrical throughflow channel, as explained in the previous paragraph.
Die ringzylindrische und "totwasserfreie" Durchströmform des Produktes ist natürlich einer gleichmäßigeren Temperaturkonstanthaltung wesentlich besser zugänglich als ein kompakter, im Querschnitt kreisförmiger Produktstrom, dessen zentraler Strömungsschlauch bei vergleichbarem Produktdurchsatz entsprechend weiter distanziert zur Tauscherfläche strömt.The ring cylindrical and "dead water free" flow form of the Product is natural a more even one Keeping temperature constant much more accessible than a compact one, in cross section circular Product flow, the central flow hose at comparable Product throughput flows correspondingly further away from the exchanger surface.
Der erfindungsgemäße Wärmetauscher und die zu diesem vorgesehenen vorteilhaften Weiterbildungen werden nachfolgend anhand der zeichnerischen Darstellung von Ausführungsbeispielen näher erläutert.The heat exchanger according to the invention and to this Advantageous further developments provided are described below the graphic representation of exemplary embodiments explained in more detail.
Es zeigt schematischIt shows schematically
Der Wärmetauscher zur Temperaturkonstanthaltung
von hoch viskosen Polymerisaten besteht nach wie vor aus einem rohrförmigen,
außenbeheizbaren
Behälter
Für
einen solchen Wärmetauscher
ist nun unter Verweis auf
Bezgl. der Stege
Eine Bemessung der Öffnungswinkel β der Diffusor-
und Trichterausbildungen
Um den Strömungsweg des Produktes im Wärmetauscher
zu verlängern
und dadurch gegf. den Wärmetauscher
insgesamt etwas kürzer
bauen zu können,
können
mindestens auf einem Teilbereich der zylindrischen Aussenfläche des
Verdrängerkörpers
Was die Beheizung des hohl ausgebildeten Verdrängerkörpers
Mit Rücksicht auf diese Leitungsführung und aus
Gründen
eine zweckmäßig einfachen
Zusammenfügung
und auch Demontage des Wärmetauschers
ist der die Trichterausbildung
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002141276 DE10241276A1 (en) | 2002-09-06 | 2002-09-06 | Heat exchanger for maintaining constant temperature in polymers has a heated internal torpedo with ends matched to those of the exchanger body ends forming a polymer flow channel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002141276 DE10241276A1 (en) | 2002-09-06 | 2002-09-06 | Heat exchanger for maintaining constant temperature in polymers has a heated internal torpedo with ends matched to those of the exchanger body ends forming a polymer flow channel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10241276A1 true DE10241276A1 (en) | 2004-03-18 |
Family
ID=31724413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002141276 Ceased DE10241276A1 (en) | 2002-09-06 | 2002-09-06 | Heat exchanger for maintaining constant temperature in polymers has a heated internal torpedo with ends matched to those of the exchanger body ends forming a polymer flow channel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10241276A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2565572A1 (en) * | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Heat exchange conduit system |
DE202013004624U1 (en) * | 2013-05-16 | 2014-08-18 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Internal heat exchanger for a motor vehicle air conditioning system |
CN105004201A (en) * | 2015-07-17 | 2015-10-28 | 中国华能集团公司 | Urea solution hydrolysis ammonia producing reactor outlet heat exchanger |
CN105457575A (en) * | 2014-09-12 | 2016-04-06 | 张宝权 | Chloride finished product quality control process |
CN117419586A (en) * | 2023-12-19 | 2024-01-19 | 中国核动力研究设计院 | Unidirectional micro-channel heat exchange tube assembly and heat exchanger |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516958C2 (en) * | 1985-05-10 | 1990-01-04 | L. & C. Steinmueller Gmbh, 5270 Gummersbach, De | |
DE3788426T2 (en) * | 1987-09-30 | 1994-04-21 | Mitsui Toatsu Chemicals | CONTINUOUS PROCESS FOR TREATING A POLYMER REACTION MIXTURE. |
-
2002
- 2002-09-06 DE DE2002141276 patent/DE10241276A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3516958C2 (en) * | 1985-05-10 | 1990-01-04 | L. & C. Steinmueller Gmbh, 5270 Gummersbach, De | |
DE3788426T2 (en) * | 1987-09-30 | 1994-04-21 | Mitsui Toatsu Chemicals | CONTINUOUS PROCESS FOR TREATING A POLYMER REACTION MIXTURE. |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2565572A1 (en) * | 2011-09-02 | 2013-03-06 | Aurotec GmbH | Heat exchange conduit system |
WO2013030402A2 (en) | 2011-09-02 | 2013-03-07 | Aurotec Gmbh | Heat exchanger pipe system |
WO2013030402A3 (en) * | 2011-09-02 | 2013-04-25 | Aurotec Gmbh | Heat exchanger pipe system |
US10557668B2 (en) | 2011-09-02 | 2020-02-11 | Aurotec Gmbh | Pipe system including internal heat exchangers |
DE202013004624U1 (en) * | 2013-05-16 | 2014-08-18 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Internal heat exchanger for a motor vehicle air conditioning system |
CN105457575A (en) * | 2014-09-12 | 2016-04-06 | 张宝权 | Chloride finished product quality control process |
CN105457575B (en) * | 2014-09-12 | 2017-06-06 | 张宝权 | Chloride final product quality control technique |
CN105004201A (en) * | 2015-07-17 | 2015-10-28 | 中国华能集团公司 | Urea solution hydrolysis ammonia producing reactor outlet heat exchanger |
CN117419586A (en) * | 2023-12-19 | 2024-01-19 | 中国核动力研究设计院 | Unidirectional micro-channel heat exchange tube assembly and heat exchanger |
CN117419586B (en) * | 2023-12-19 | 2024-02-20 | 中国核动力研究设计院 | Unidirectional micro-channel heat exchange tube assembly and heat exchanger |
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