EP0718579B1 - Echangeur de chaleur pour refroidissement de gaz de craquage - Google Patents

Echangeur de chaleur pour refroidissement de gaz de craquage Download PDF

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Publication number
EP0718579B1
EP0718579B1 EP95111740A EP95111740A EP0718579B1 EP 0718579 B1 EP0718579 B1 EP 0718579B1 EP 95111740 A EP95111740 A EP 95111740A EP 95111740 A EP95111740 A EP 95111740A EP 0718579 B1 EP0718579 B1 EP 0718579B1
Authority
EP
European Patent Office
Prior art keywords
cooling
recess
tube
heat exchanger
outer tube
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
EP95111740A
Other languages
German (de)
English (en)
Other versions
EP0718579A2 (fr
EP0718579A3 (fr
Inventor
Peter Brücher
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.)
Borsig GmbH
Original Assignee
Borsig GmbH
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 Borsig GmbH filed Critical Borsig GmbH
Publication of EP0718579A2 publication Critical patent/EP0718579A2/fr
Publication of EP0718579A3 publication Critical patent/EP0718579A3/fr
Application granted granted Critical
Publication of EP0718579B1 publication Critical patent/EP0718579B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • 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
    • C10G9/002—Cooling of cracked gases
    • 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
    • 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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • 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
    • F28D2021/0075—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for syngas or cracked gas cooling systems

Definitions

  • the invention relates to a heat exchanger for cooling Fission gas with the features of the generic term of Claim 1.
  • a heat exchanger is from the GB-A-1 504 361.
  • the cracked gas is released by a thermal cracking of Hydrocarbons produced in a cracking furnace.
  • This Cracking furnaces are heated with a number from the outside Provide canned tubes through which the used Hydrocarbons with the addition of water vapor become.
  • the cracked gas generated leaves the can with one Temperature of about 800 to 850 ° C and needs for stabilization its molecular composition cooled very quickly become. This is done in a cracked gas cooler by a Heat transfer from the fission gas to evaporating, below high pressure water.
  • Cracked gas coolers are known in which each one is made of the can coming out of the cracking furnace with a separate one
  • the cracked gas cooler is connected to one or more pipes can own, enclosed by a common coat or are designed as double pipes. Since the from the As a rule, the cracked tubes emerging from the cracking furnace are linear can be arranged at a relatively short distance from one another all cracked gas coolers in one module in the form of a Linear cooler can be summarized.
  • the supply and discharge of the Cooling medium takes place at the ends of the pipes Water chambers that are oval or tubular can.
  • the double tube heat exchanger known from GB-A-1 504 361 for cooling cracked gas contains oval tubes Water chambers. Several oval tubes are gas tight Floor welded together, which is a gas entry chamber completes. The inner tube and the inner tube under formation an outer tube surrounding an annular gap are on each other welded into the oval tube on opposite sides. The interior of a water chamber stands with the annular gap of all connected double pipes in connection.
  • From US-A-5 035 283 is a shell and tube heat exchanger known in which the cooling tubes of a common jacket enclosed and in a tube plate provided with cooling channels are welded in.
  • the tube plate is with the inside of the Provide sheaths open turns, which with the Cooling channels are connected and the cooling pipes surrounded concentrically.
  • the cooling tubes in each row of tubes penetrate the cooling channels.
  • the invention is based, the water chamber of the task Generic heat exchanger to design so that none Material overheating of the surfaces involved in the heat exchange occur that a defined flow of entering Cooling medium is set and that the water chamber the high Presses the coolant withstands and inexpensively is to be produced.
  • the pressure of the Cooling medium on a relatively narrow annular, the Bottom of the depression-representing surface, the Outside diameter not the inside diameter of the outer tube significantly exceeds. Due to the small size of the through the pressure of the soil loaded with the cooling medium only needs it to be provided with a small wall thickness. This minor Wall thickness allows good cooling of the temperature-loaded Soil through the cooling medium so that material overheats can be avoided. Outside the distance from each other The water chamber retains the intended recesses original thickness of the solid piece, so that the Water chamber is stiff enough in itself to be without additional Reinforcements to withstand the high pressure of the cooling medium.
  • the recesses can be made into the solid piece by a simple mechanical processing such as drilling and milling bring in, reducing the effort for the production of Water chamber is reduced.
  • each cooling tube can individually from the cooling medium can be controlled, resulting in a better distribution of the Cooling medium on this results in a cooling tube.
  • the cross section circular depression created especially in connection with a tangential supply of the cooling medium a rotating Coolant flow, which ensures good cooling of the floor and an undesirable deposition of particles from the Coolant does not allow. Any existing particles will be the cyclone principle in the rotating flow near the Wall of the recess held and can by the further Borehole leading to the outside is removed during operation become.
  • a cracking furnace In a cracking furnace is implemented by Hydrocarbons generate a fission gas with water vapor.
  • the Cracking furnace is provided with can 2, from the outside are heated and flowed through by the feed. That the Can 2 with a temperature of 800 to 850 ° C leaving cracked gas enters a cracked gas cooler 3 one that is in the immediate vicinity above the cracking furnace is arranged.
  • this cracked gas cooler 3 In this cracked gas cooler 3, the molecular Composition of the cracked gas due to a sudden cooling in the Heat exchange with evaporating, under high pressure Stabilized water.
  • the cracked gas cooler 3 consists of one or more cooling tubes 4, which are arranged in a row next to each other, that each cooling tube 4 is assigned to and in a canned tube 2 axial extension.
  • the inside diameter of The can 2 and the cooling tube 4 are, as shown, customary same size.
  • the cooling pipes 4 open into a gas manifold 5 on.
  • Each cooling tube 4 is ring-shaped Intermediate space surrounded by an outer tube 6. At both ends the outer tubes 6 are water chambers 7, 8 for the supply and Removal of the cooling medium is provided.
  • each can 2 is widened like a fork.
  • an inner, the tube section 9 forming the extension of the can 2 and an outer tube section 10, both at one end are interconnected.
  • the outer tube section 10 is on the lower water chamber 7 welded.
  • the inner one Pipe section 9 of the canned tube 2 is small axial distance from the cooling tube 4.
  • the gap between the inner pipe section 9 and the outer Pipe section 10 is made of a layer 17 filled with heat-insulating material.
  • the water chamber 7, 8 is made of a solid, seamless, strip-shaped piece. This piece is in one Distance from one another in cross section circular depressions 11 incorporated, the number of which corresponds to the cooling tubes 4.
  • Each cooling tube 4 has its own depression 11 assigned.
  • the outer tube 6 is on the can 2 opposite side welded to the water chamber 7.
  • the inside diameter of the Outer tube 6 corresponds to the diameter of the reinforcement 11.
  • the recess 11 can consistently this diameter exhibit.
  • the deepening can also be done in the middle area be widened, the diameter of the recess 11 being approximately by the width of the space between the cooling tube 4 and the outer tube 6 can be larger than the inner diameter of the Outer tube 6.
  • the depression 11 is so deep that the water chamber 7, 8 forming piece incorporated that an annular bottom 12 with a small remaining wall thickness remains.
  • this floor 12 is the cooling tube 4 welded.
  • the area of the annular Bottom 12 is limited by the outer diameter of the Cooling tube 4 and the diameter of the recess 11th
  • Each depression 11 opens out at the level of the bottom 12 preferably tangentially into a bore 13.
  • the holes 13 are each via a connecting piece 14 with a Supply line 15 connected to the cooling medium.
  • the Coolant passes through the bore 13 at high speed into the recess 11 and generates a rotating flow around the cooling tube 4. This flow ensures good cooling of the bottom 12 of the recess 11 and thereby prevents one Deposition of particles on the floor 12, which leads to a harmful local overheating.
  • the depression 11 is provided with a further bore 16, which is led to the outside at the level of the bottom 12. Through this further bore 16 can the particles that are in the Well 11 are and with the flow of the cooling medium rotate during the operation of the cracked gas cooler 3 be removed.
  • the others are Bores 16 connected to a line 18.
  • This line 18 is equipped with a drain valve, not shown. By a brief, sudden opening of the drain valve can remove cooling medium with particles contained therein become.
  • the holes 13, 16 described can be used as Inspection openings can be used by passing through them an operational shutdown, an endoscope in the recess 11 is introduced. With the help of these endoscopes, the Check the condition of the recess 11.
  • Fig. 1 is a cracked gas cooler 3 with three cooling tubes shown. Without leaving the principle according to the invention, can the cracked gas cooler also more than three or only one Cooling tube included.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Claims (5)

  1. Echangeur de chaleur, pour le refroidissement de gaz de crackage, avec au moins un tube de refroidissement (4) entouré par un tube extérieur (6), le tube de refroidissement (4) et le tube extérieur (6) étant soudés, à chacune des deux extrémités, à une chambre à eau (7, 8) en vue d'amener, respectivement d'évacuer, un milieu de refroidissement, caractérisé en ce que la chambre à eau (7, 8) est constituée d'un élément massif, en forme de bande, dans lequel sont ménagées des cavités (11) circulaires espacées les unes des autres, de manière correspondante au nombre des tubes de refroidissement (4), en ce que chaque cavité (11) entoure un tube de refroidissement (4), en ce que le diamètre de la cavité (11) est identique au supérieur au diamètre intérieur du tube extérieur (6), en ce que le diamètre intérieur du tube extérieur (6) coïncide avec le diamètre de la cavité (11) au point de montage par soudure du tube extérieur (6) sur la chambre à eau (7, 8), en ce que la cavité (11) présente, dans la zone des extrémités tubulaires des tubes de refroidissement (4), un fond (12) mince en forme d'anneau avec une faible épaisseur de paroi résiduelle, et en ce qu'un perçage (13) ménagé à travers la paroi latérale de la chambre à eau (7, 8) s'abouche dans chaque cavité (11) en vue d'assurer l'amenée, respectivement l'évacuation du milieu de refroidissement.
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que le perçage (13) s'abouche tangentiellement dans la cavité (11).
  3. Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce que tous les perçages (13) sont raccordés à une conduite d'amenée (15) commune.
  4. Echangeur de chaleur selon l'une des revendications 1 à 3, caractérisé en ce qu'un autre perçage (16) est ménagé pour la sortie de chaque cavité (11).
  5. Echangeur de chaleur selon la revendication 4, caractérisé en ce que tous les autres perçages (16) sont raccordés à une conduite (18) commune.
EP95111740A 1994-12-21 1995-07-26 Echangeur de chaleur pour refroidissement de gaz de craquage Expired - Lifetime EP0718579B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4445687 1994-12-21
DE4445687A DE4445687A1 (de) 1994-12-21 1994-12-21 Wärmetauscher zum Kühlen von Spaltgas

Publications (3)

Publication Number Publication Date
EP0718579A2 EP0718579A2 (fr) 1996-06-26
EP0718579A3 EP0718579A3 (fr) 1997-10-08
EP0718579B1 true EP0718579B1 (fr) 1999-11-10

Family

ID=6536519

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111740A Expired - Lifetime EP0718579B1 (fr) 1994-12-21 1995-07-26 Echangeur de chaleur pour refroidissement de gaz de craquage

Country Status (4)

Country Link
US (1) US5579831A (fr)
EP (1) EP0718579B1 (fr)
JP (1) JP3605681B2 (fr)
DE (2) DE4445687A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0810414B1 (fr) * 1996-06-01 2002-04-10 Borsig GmbH Echangeur de chaleur pour le refroidissement de gaz de craquage
EP2151652A2 (fr) 2008-08-08 2010-02-10 Borsig GmbH Pièce de connexion entre un tuyau de séparation et un tuyau de refroidissement ainsi que procédé de connexion d'un tuyau de séparation et d'un tuyau de refroidissement

Families Citing this family (20)

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Publication number Priority date Publication date Assignee Title
DE19622139A1 (de) * 1994-12-21 1997-12-04 Borsig Babcock Ag Wärmetauscher zum Kühlen von Spaltgas
US5690168A (en) * 1996-11-04 1997-11-25 The M. W. Kellogg Company Quench exchanger
CA2289852C (fr) * 1997-05-13 2007-07-03 Stone & Webster Engineering Corporation Fourneau de craquage comportant des tubes de chauffage par rayonnement
DE19833004A1 (de) * 1998-07-22 2000-01-27 Borsig Gmbh Wärmetauscher zum Kühlen eines heißen Prozeßgases
CA2274724A1 (fr) * 1999-06-16 2000-12-16 Andre Landry Echangeur de chaleur a vapeur protege contre le gel
US20040089439A1 (en) * 2002-11-07 2004-05-13 Treverton Andrew Clare Tube-to-tube heat exchanger assembly
ITMI20040272A1 (it) * 2004-02-18 2004-05-18 Olmi Spa Giunzione tra un tubo raffreddato a doppia parete ed un tubo non raffreddato e scambiatore di calore a doppio tubi comprendente tale giunzione
ITMI20050847A1 (it) * 2005-05-11 2006-11-12 Olmi Spa Giunzione tra tubo raffreddato e tubo non raffreddato in uno scambiatore di calore a doppio tubo
US7780843B2 (en) 2005-07-08 2010-08-24 ExxonMobil Chemical Company Patents Inc. Method for processing hydrocarbon pyrolysis effluent
US7465388B2 (en) * 2005-07-08 2008-12-16 Exxonmobil Chemical Patents Inc. Method for processing hydrocarbon pyrolysis effluent
US7763162B2 (en) 2005-07-08 2010-07-27 Exxonmobil Chemical Patents Inc. Method for processing hydrocarbon pyrolysis effluent
US8524070B2 (en) * 2005-07-08 2013-09-03 Exxonmobil Chemical Patents Inc. Method for processing hydrocarbon pyrolysis effluent
US7749372B2 (en) * 2005-07-08 2010-07-06 Exxonmobil Chemical Patents Inc. Method for processing hydrocarbon pyrolysis effluent
DE102009025624A1 (de) * 2009-06-17 2010-12-23 Borsig Gmbh Wärmetauscher zum Kühlen von Spaltgas
CN101975527B (zh) * 2010-10-21 2012-07-25 中国石油化工股份有限公司 一种线性急冷换热器入口连接件及其急冷换热器
DE102014018261A1 (de) * 2014-12-11 2016-06-16 Borsig Gmbh Quenchkühlsystem
ES2728556T3 (es) * 2016-07-08 2019-10-25 Technip France Intercambiador de calor para enfriar el gas de reacción
RU2757041C1 (ru) * 2017-10-27 2021-10-11 Чайна Петролеум Энд Кемикал Корпорейшн Интенсифицирующая теплопередачу труба, а также содержащие ее крекинговая печь и атмосферно-вакуумная нагревательная печь
IT201800004827A1 (it) * 2018-04-24 2019-10-24 Scambiatore di calore a doppio tubo e relativo metodo di fabbricazione
DE102021003955A1 (de) * 2021-07-23 2023-01-26 Borsig Gmbh Wärmetauscher

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DE2412421A1 (de) * 1974-03-15 1975-09-25 Schmidt Sche Heissdampf Waermeaustauscher mit doppelrohrelementen
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FR2599133B1 (fr) * 1986-05-21 1990-09-21 Struthers Wells Sa Echangeur de chaleur tubulaire a double plaque de support du faisceau de tube
DE3715712C1 (de) * 1987-05-12 1988-07-21 Borsig Gmbh Waermetauscher insbesondere zum Kuehlen von Spaltgas
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DE3822808C2 (de) * 1988-07-06 1993-12-23 Balcke Duerr Ag Wärmetauscher mit zwischen zwei Rohrplatten angeordneten Wärmetauscherrohren
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DE4230092C2 (de) * 1992-09-09 2000-07-27 Behr Gmbh & Co Wärmetauscher, insbesondere Verdampfer für Klimaanlagen von Kraftfahrzeugen
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0810414B1 (fr) * 1996-06-01 2002-04-10 Borsig GmbH Echangeur de chaleur pour le refroidissement de gaz de craquage
EP2151652A2 (fr) 2008-08-08 2010-02-10 Borsig GmbH Pièce de connexion entre un tuyau de séparation et un tuyau de refroidissement ainsi que procédé de connexion d'un tuyau de séparation et d'un tuyau de refroidissement
DE102008036955A1 (de) 2008-08-08 2010-02-11 Borsig Gmbh Verbindungsstück zwischen einem Spaltrohr und einem Kühlrohr sowie ein Verfahren zum Verbinden eines Spaltrohres mit einem Kühlrohr
EP2151652A3 (fr) * 2008-08-08 2011-10-05 Borsig GmbH Pièce de connexion entre un tuyau de séparation et un tuyau de refroidissement ainsi que procédé de connexion d'un tuyau de séparation et d'un tuyau de refroidissement
KR101432321B1 (ko) * 2008-08-08 2014-08-20 보르지크 게엠베하 반응 파이프와 냉각 파이프 간의 커넥터 및 냉각 파이프에 반응 파이프를 연결하는 방법

Also Published As

Publication number Publication date
DE4445687A1 (de) 1996-06-27
US5579831A (en) 1996-12-03
DE59507221D1 (de) 1999-12-16
EP0718579A2 (fr) 1996-06-26
JP3605681B2 (ja) 2004-12-22
EP0718579A3 (fr) 1997-10-08
JPH0979789A (ja) 1997-03-28

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