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EP0851999A1 - Echangeurs de chaleur a faisceau tubulaire places en aval d'installations thermiques de craquage - Google Patents

Echangeurs de chaleur a faisceau tubulaire places en aval d'installations thermiques de craquage

Info

Publication number
EP0851999A1
EP0851999A1 EP96931808A EP96931808A EP0851999A1 EP 0851999 A1 EP0851999 A1 EP 0851999A1 EP 96931808 A EP96931808 A EP 96931808A EP 96931808 A EP96931808 A EP 96931808A EP 0851999 A1 EP0851999 A1 EP 0851999A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
ramming
coating
tube
bundle heat
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.)
Granted
Application number
EP96931808A
Other languages
German (de)
English (en)
Other versions
EP0851999B1 (fr
Inventor
Bernhard Rosengarten
Jürgen Paul
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.)
Ruhr Oel GmbH
Original Assignee
Ruhr Oel 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7772623&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0851999(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ruhr Oel GmbH filed Critical Ruhr Oel GmbH
Publication of EP0851999A1 publication Critical patent/EP0851999A1/fr
Application granted granted Critical
Publication of EP0851999B1 publication Critical patent/EP0851999B1/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
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • 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
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49364—Tube joined to flat sheet longitudinally, i.e., tube sheet

Definitions

  • the invention relates to a thermal cracking system downstream tube bundle heat exchanger (RWU) with a tube bundle of heat exchanger tubes held between two tube plates, a method for coating a tube plate and the use of a ramming compound
  • RWUs of this type are used, for example, in ethylene plants for generating ethylene by thermal splitting downstream of a transfer line of a cracking furnace and are referred to as cracked gas coolers
  • Cracked gas coolers must meet extraordinarily high requirements in terms of construction and material properties.
  • the hot reaction mixture (approx. 850 ° C) emerging from the cracking furnace due to pyrolysis of hydrocarbons such as naphtha, heavy gasoline or ethane must be cooled rapidly in the cracked gas coolers in order to avoid unwanted side reactions
  • Cracked gas cooler or RWU serves as a waste heat boiler, in which high-pressure steam is generated by the evaporation of feed water guided on the jacket side
  • the cracked gas coming out of the cracking furnace at high speed usually enters the cracked gas cooler from below via a transfer line into an axially arranged hood connection and hits the lower tube plate in order to be passed through an oil wash and further processing after passing through the heat exchanger tubes of the cracked gas cooler
  • heat exchangers for cooling synthesis gas generated in a coal gasification plant are known, in which the tube plate on the inside of the gas with a ceramic layer consists of individual, side-by-side, parallelepiped-shaped grommets, each grommet having a conical opening , which narrows into a pipe section that protrudes into a heat exchanger pipe.
  • This solution does not provide a gas-tight seal between the individual cuboid elements. In cracked gas coolers of an olefin plant, this would lead to coke formation in the interstices and destroy the materials.
  • the ends of the spouts used would form a tear-off edge in the tube, which would cause strong turbulence at the flow speeds of about 300 m / s, which would result in additional erosions.
  • the invention takes a different approach by striving for effective protection against erosion by reinforcing the base plate.
  • the erosions on the lower tube plate necessitated periodic shutdowns of the cracked gas coolers, which has been used to bring the base plates back to the required wall thickness by means of build-up welding.
  • This process is complex and cannot be satisfactory with regard to the resistance of the material applied by means of cladding.
  • the base plate not only acts like a baffle plate and is therefore exposed to particular erosion, but at the same time should be relatively thin in order to be as possible to be able to achieve a low interface temperature. This is desirable for reasons relating to the construction of the apparatus and is also advantageous because the gases entering should be cooled as quickly as possible without first undergoing undesirable side reactions.
  • the coating is carried out by means of a ramming compound with a thickness of 10 to 50, preferably 15 to 30 mm.
  • anchors preferably in V, T, S or Y shape, in particular with a diameter of about 5 mm, or a sheet metal structure in a honeycomb structure, preferably with a height of 5, can be placed on the tube plate up to 10 mm.
  • Such anchors are known as ECO-VINs for various lining thicknesses in linings welded to sheet steel with masonry in firing systems, the legs of the anchor being able to be bent to approximately 60 ° C. for better anchoring of the ramming mass.
  • the anchors can be welded onto the lower tube plate in a non-spread or spread version.
  • the coating with the ramming mass made of a chemically bound, erosion-resistant refractory material is applied either by hand or for larger areas by spraying and compacted manually, for example using flat steel and a hammer, or using machine tools.
  • ramming compounds sometimes also known as ramming compounds
  • chemically setting compounds consisting primarily of inorganic raw materials are used.
  • the setting takes place in the presence of air.
  • An important raw material is corundum, for example.
  • a typical composition of such compositions is for example 85 percent by weight Al 2 O 3, 7 percent by weight SiO 2, 0.3 percent by weight Fe 2 ⁇ 3, 3.1 percent by weight MgO, 4.5 percent by weight P2O5, and 0.1 percent by weight alkali (about values).
  • the maximum grain size of the individual components should not exceed 4 mm.
  • This inorganic mixture is mixed with water for processing or for the manufacture of the ramming mass and then processed. After the ramming compound has been applied, it is usually allowed to set for at least 24 hours.
  • the thermal conductivity of the set ramming mass or the coating is between 1.5 and 3.5 W / mK.
  • the abrasion of this coating is less than 8 cm 3 (according to ASTM C-704)
  • a suitable ramming compound is, for example, RESCO-CAST, a product of RESCO Products Inc.
  • Other suitable products on the market are the PLIRAM Cyclone-Mix D from Plibrico GmbH known as ramming compound.
  • the products mentioned are from practice z. B for the internal lining of FCC (fluid catalytic cracker) system parts are known. System components are lined in which the fluidized FCC catalyst moves at temperatures of approximately 750 ° C. at a speed of 20 to 30 m / s however, no indication that the ramming masses mentioned are suitable for carrying out the subject matter of the invention.
  • FCC fluid catalytic cracker
  • the ramming mass can, for. B steel needles or corrugated steel fibers (C mix), preferably in a proportion of 1 to 2% by weight, are added
  • the diameter of the transfer line coming from the cracking furnace usually widens to the diameter of the tube plate in the form of a hood connector
  • the invention further relates to a method for coating a tube plate in an RWU.
  • the tube openings are sealed with plugs on the inlet-side tube plate. These plugs protrude at least to the height of the layer thickness of the coating to be applied.
  • the ramming compound is then applied. This can be done manually using a spatula and trowel or also by spraying on, followed by mechanical compression of the ramming compound, for example by hammer blows transmitted by flat iron. After the ramming compound has set, usually at least 24 hours, the plugs are removed and the ramming compound is dried or baked, if necessary
  • the ramming compounds described are ideally suited for coating floor slabs in downstream tube bundle heat exchangers
  • V-anchors or ECO-VIN anchors with the embodiment shown in FIGS. 1 and 2 of the drawing made of an austenitic steel (1 4841) are welded onto a base plate.
  • the inner tubes of the RWU are closed by conical wooden plugs so that the ramming mass is on both the anchors as well as on the plugs.
  • the ramming mass consisting of PLIRAM Cyclone-Mix D is mixed with 2% by weight corrugated steel fibers C-Mix 25 (material 1 4841)
  • the ramming compound is applied manually using a spatula and trowel.
  • the ramming compound applied is then compacted in sections to form a void-free coating using hammer blows transferred using flat iron.
  • FIG. 1 shows a tube sheet according to the invention in a top view (viewed from below).
  • FIG. 2 shows a section through a cracked gas cooler with a coating according to the invention in the area of the base plate.
  • the base plates equipped according to the invention are also subject to erosion by coke particles. Compared to the unprotected metallic material of the base plate, the erosion of base plates coated according to the invention is significantly slower, so that there is an improved availability of the corresponding system parts. In addition, removal and reapplication of the coating according to the invention is possible in the event of wear.
  • the problem of limit temperature described at the outset is alleviated. This results in a further advantage that the metal base plate no longer has to be as thin, but can be made stronger. Due to the structural stabilization achieved in this way, the tie rods necessary for stabilizing thin base plates can be dispensed with at least in part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Vehicle Body Suspensions (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne des échangeurs de chaleur à faisceau tubulaire (RWU) placés en aval d'installations thermiques de craquage, comportant un faisceau tubulaire de tubes échangeurs de chaleur, maintenu entre deux plaques tubulaires. Afin de réduire les phénomènes d'érosion au niveau de la plaque de base, la plaque tubulaire située côté entrée est munie, sur le côté faisant face au gaz affluant, d'un revêtement réalisé dans une matière durcie chimiquement, qui résiste à l'érosion, est réfractaire et laisse libres les ouvertures des tubes échangeurs de chaleur.
EP96931808A 1995-09-20 1996-09-14 Echangeur de chaleur a faisceau tubulaire places en aval d'installations thermiques de craquage, procede de revetement d'une plaque a tubes et utilisation d'un pise refractaire Expired - Lifetime EP0851999B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19534823A DE19534823C2 (de) 1995-09-20 1995-09-20 Rohrbündel-Wärmeübertrager
DE19534823 1995-09-20
PCT/EP1996/004045 WO1997011330A1 (fr) 1995-09-20 1996-09-14 Echangeurs de chaleur a faisceau tubulaire places en aval d'installations thermiques de craquage

Publications (2)

Publication Number Publication Date
EP0851999A1 true EP0851999A1 (fr) 1998-07-08
EP0851999B1 EP0851999B1 (fr) 2001-06-20

Family

ID=7772623

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96931808A Expired - Lifetime EP0851999B1 (fr) 1995-09-20 1996-09-14 Echangeur de chaleur a faisceau tubulaire places en aval d'installations thermiques de craquage, procede de revetement d'une plaque a tubes et utilisation d'un pise refractaire

Country Status (15)

Country Link
US (1) US6155337A (fr)
EP (1) EP0851999B1 (fr)
JP (1) JP3891589B2 (fr)
AT (1) ATE202415T1 (fr)
AU (1) AU700338B2 (fr)
CA (1) CA2230134C (fr)
CZ (1) CZ294937B6 (fr)
DE (3) DE19534823C2 (fr)
DK (1) DK0851999T3 (fr)
ES (1) ES2159042T3 (fr)
GR (1) GR3036096T3 (fr)
HU (1) HU226917B1 (fr)
PL (1) PL183641B1 (fr)
PT (1) PT851999E (fr)
WO (1) WO1997011330A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19962391A1 (de) * 1999-12-23 2001-06-28 Behr Industrietech Gmbh & Co Ladeluftkühler
DE10028568C1 (de) * 2000-06-09 2001-06-07 Uwe Schwerdtfeger Röhrchen-Wärmetauscher
DE102005032118A1 (de) * 2005-07-07 2007-01-11 Ruhr Oel Gmbh Rohrbündelwärmeübertrager mit verschleißbeständiger Rohrbodenauskleidung
DE102006055973A1 (de) * 2006-11-24 2008-05-29 Borsig Gmbh Wärmetauscher zur Kühlung von Spaltgas
US9575479B2 (en) * 2013-11-27 2017-02-21 General Electric Company System and method for sealing a syngas cooler
DE102017003380A1 (de) * 2017-04-06 2018-10-11 Linde Aktiengesellschaft Wärmetauscher, Verwendung eines Wärmetauschers und Verfahren zur Herstellung eines Wärmetauschers
JP7738496B2 (ja) * 2022-02-04 2025-09-12 三菱重工業株式会社 熱交換器

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1894956A (en) * 1929-01-16 1933-01-24 Babcock & Wilcox Co Air heater
US3017696A (en) * 1957-03-11 1962-01-23 Griscom Russell Co Corrosion-resistant surface
GB1175157A (en) * 1966-03-19 1969-12-23 Ernst Kreiselmaier Improvements in or relating to Steam Condensers
GB1195309A (en) * 1967-11-29 1970-06-17 Idemitsu Petrochemical Co Quenching Apparatus for Use with Thermal Cracking Systems
US3751295A (en) * 1970-11-05 1973-08-07 Atomic Energy Commission Plasma arc sprayed modified alumina high emittance coatings for noble metals
DE2160372C3 (de) * 1971-12-02 1975-07-17 1000 Berlin Vorrichtung zur gleichmäßigen Durchströmung eines Rohrbündelwärmetauschers
DE2458308A1 (de) * 1974-12-10 1976-06-24 Siegener Ag Geisweid Gaskuehler zum kuehlen von spaltgas oder synthesegas
US3990862A (en) * 1975-01-31 1976-11-09 The Gates Rubber Company Liquid heat exchanger interface and method
US4124068A (en) * 1977-05-16 1978-11-07 Uop Inc. Heat exchange tube for fluidized bed reactor
US4479337A (en) * 1980-04-14 1984-10-30 Standard Oil Company (Indiana) Refractory anchor
JPS58205084A (ja) * 1982-05-26 1983-11-29 Hitachi Ltd 薄膜蒸発式熱交換器
IT1209532B (it) * 1984-04-20 1989-08-30 Snam Progetti Processo per la sintesi di urea e materiale utilizzato nello stesso.
DE3531150A1 (de) * 1985-08-31 1987-03-05 Kreiselmaier Ernst Gmbh Co Verfahren zur beschichtung von rohrboeden od.dgl. von kondensatoren, kuehlern, waermetauschern od.dgl. mit einem korrosionsschutzmittel
US4753849A (en) * 1986-07-02 1988-06-28 Carrier Corporation Porous coating for enhanced tubes
DE3640970A1 (de) * 1986-11-29 1988-06-09 Gutehoffnungshuette Man Rohrbuendelwaermetauscher
DE3842727A1 (de) * 1988-12-19 1990-06-21 Borsig Gmbh Waermetauscher insbesondere zum kuehlen von spaltgas
US5141049A (en) * 1990-08-09 1992-08-25 The Badger Company, Inc. Treatment of heat exchangers to reduce corrosion and by-product reactions
JPH0570248A (ja) * 1991-04-02 1993-03-23 Harima Ceramic Co Ltd 高炉出銑樋用不定形耐火物
DE59200074D1 (de) * 1992-04-29 1994-03-31 Borsig Babcock Ag Wärmetauscher zum Kühlen von in einer Kohlevergasungsanlage erzeugtem Synthesegas.
DE4404068C1 (de) * 1994-02-09 1995-08-17 Wolfgang Engelhardt Wärmetauscher
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Non-Patent Citations (1)

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Title
See references of WO9711330A1 *

Also Published As

Publication number Publication date
ATE202415T1 (de) 2001-07-15
JP3891589B2 (ja) 2007-03-14
US6155337A (en) 2000-12-05
AU700338B2 (en) 1998-12-24
PL326272A1 (en) 1998-08-31
DE19534823C2 (de) 2002-08-22
CA2230134C (fr) 2008-03-25
CA2230134A1 (fr) 1997-03-27
AU7085596A (en) 1997-04-09
DE29515406U1 (de) 1997-01-30
CZ294937B6 (cs) 2005-04-13
ES2159042T3 (es) 2001-09-16
PT851999E (pt) 2001-09-28
WO1997011330A1 (fr) 1997-03-27
CZ86698A3 (cs) 1999-08-11
HUP9903453A2 (hu) 2000-04-28
DK0851999T3 (da) 2001-09-03
GR3036096T3 (en) 2001-09-28
DE59607138D1 (de) 2001-07-26
DE19534823A1 (de) 1997-03-27
EP0851999B1 (fr) 2001-06-20
JPH11512514A (ja) 1999-10-26
HU226917B1 (en) 2010-03-01
PL183641B1 (pl) 2002-06-28
HUP9903453A3 (en) 2001-10-29

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