EP4379305A1 - Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée - Google Patents

Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée Download PDF

Info

Publication number
EP4379305A1
EP4379305A1 EP22210111.5A EP22210111A EP4379305A1 EP 4379305 A1 EP4379305 A1 EP 4379305A1 EP 22210111 A EP22210111 A EP 22210111A EP 4379305 A1 EP4379305 A1 EP 4379305A1
Authority
EP
European Patent Office
Prior art keywords
transfer line
inlet cone
exchanger
line exchanger
shaped wall
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.)
Pending
Application number
EP22210111.5A
Other languages
German (de)
English (en)
Inventor
Antonio LING
Andrei Gonioukh
Pascal FRANZEN
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.)
Basell Polyolefine GmbH
Original Assignee
Basell Polyolefine 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 Basell Polyolefine GmbH filed Critical Basell Polyolefine GmbH
Priority to EP22210111.5A priority Critical patent/EP4379305A1/fr
Priority to PCT/EP2023/083243 priority patent/WO2024115423A1/fr
Publication of EP4379305A1 publication Critical patent/EP4379305A1/fr
Pending legal-status Critical Current

Links

Images

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
    • 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
    • F28D7/16—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 in parallel spaced relation
    • 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
    • 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
    • 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
    • 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
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • 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
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/028—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using inserts for modifying the pattern of flow inside the header box, e.g. by using flow restrictors or permeable bodies or blocks with channels
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/10—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overheating, e.g. heat shields

Definitions

  • the present disclosure refers to a transfer line exchanger with an inlet cone, a process for cracking hydrocarbons utilizing the transfer line exchanger and an apparatus for cracking hydrocarbons comprising the transfer line exchanger.
  • Cracking describes the process of breaking long chains of hydrocarbons down into smaller, often unsaturated, hydrocarbons.
  • a feedstock of more complex hydrocarbons such as ethane and naphtha is fed into a cracking furnace, in particular into a so-called cracking coils arranged inside the cracking furnace and quickly brought up to a cracking temperature of around 800 to 900 °C with heat supplied from the outside of the coils.
  • a cracking coils arranged inside the cracking furnace and quickly brought up to a cracking temperature of around 800 to 900 °C with heat supplied from the outside of the coils.
  • carbon deposition occurs on the inside of the coils.
  • This so-called coking leads to an increase pressure drop in the coils and lowers the heat transfer efficiency, eventually causing a reduction in the operation efficiency of the thermal cracking furnace.
  • the temperature on the outside of the coils Due to the decreased heat transfer efficiency, the temperature on the outside of the coils has to be constantly increased in order to achieve the required cracking temperatures on the inside. However, increasing the temperature is only possible up to a maximum temperature which is usually determined by the material of the coils taking into account a certain safety margin. Ultimately, the coke deposition inside the coils has to be removed, referred to as decoking, resulting in an interruption of the whole process. Once a maximum temperature has been reached, decoking must be carried out. However, during the decoking process coke deposits flow with high velocity through the transfer line exchanger and caused significant erosion issues.
  • the gas enters the transfer line exchanger at high velocities and temperatures.
  • the transfer line exchanger is usually equipped with an inlet cone lined with refractory.
  • the cracked gas usually also contains small solid particles, such as coke particles, which causes severe erosion of the refractory lining.
  • KR 101418137 discloses a heat-resistant cone of a heat exchanger which has an inner lining, an outer wall portion formed to surround the inner cylinder at a distance from the outer circumferential surface of the inner cylinder and a refractory material filled in the space between the inner cylinder and outer wall portion.
  • US 4,161,192 relates to an inlet cone for passing gases from the outlet side of a hydrocarbon cracking heater to the tube inside of a heat exchanger, said inlet cone comprising: a generally conical metal wall connectable around the periphery of its larger end to said heat exchanger and connectable around the periphery of its smaller end to said cracking heater, said generally conical wall having an aperture between its said larger end and its said smaller end; a pressure resistant exterior wall of metal, said pressure resistant exterior wall being spaced from said generally conical wall and having its ends connected to said generally conical wall at points above and below, respectively said smaller end and said larger end of said generally conical wall; and a castable refractory fill, said refractory fill occupying the gap between said pressure resistant exterior wall and said generally conical wall and extending inwardly to form a filled aperture, said refractory fill in said filled aperture being approximately flush with the interior of said generally conical wall.
  • US 2021/0190435 describes a heat exchanger for use with a hot fluid stream leaving a high temperature process comprising a hot section and cold section which have no common or adjoining external surfaces wherein one or more heat pipes extend from the interior of the hot section, traverse the open space between the hot section and the cold section at an angle of inclination from 10° to 90° and extend into the cold section.
  • the inlet cones are filled with refractory for thermal protection.
  • the refractory cannot effectively withstand the erosive attack of the coke particles in the gas stream and becomes brittle and breaks, generating solid fractions which can badly damage the equipment.
  • a damaged refractory causes a change in the gas distribution which may lead to plugging of the equipment.
  • different expansion behavior of the cone material and the refractory lining leads to the refractory lining pushing the inlet cone away from the flange of the shell and tube exchanger, which in turn may result in gas leakage with the danger of immediate ignition of the outflowing gas. Therefore, refractory linings need to be completely refurbished or replaced at regular intervals causing high maintenance costs and production losses.
  • the present disclosure provides a transfer line exchanger comprising:
  • the heat resistant metallic material is selected from the group consisting of high temperature heat resistant cast stainless steel, solid cast iron and chromium, nickel and/or aluminum doped material.
  • the high temperature heat resistant cast may be doped with at least one of chromium, nickel and aluminum.
  • the high temperature heat resistant cast may for example be doped with chromium and nickel or even with chromium, nickel and aluminum.
  • the inlet cone does not comprise a refractory lining, in particular concrete.
  • At least part of the inner surface further comprises an erosion protection coating.
  • the conically shaped wall is solid between the inner surface and the radially outwards facing outer surface.
  • the conically shaped wall comprises a hollow volume formed between the inner surface and an outer surface.
  • the hollow volume is filled with a filling material having a lower thermal conductivity than the inner surface and/or outer surface.
  • the filling material is at least one of air, ceramic fiber or mineral wool.
  • the inlet cone further comprises at least one stabilizing bar formed at the outlet side and being arranged between a front face of the conically shaped wall and the shell and tube heat exchanger.
  • the at least one stabilizing bar is welded to the front face of the conically shaped wall.
  • a gasket is provided between the shell and tube heat exchanger and the inlet cone, wherein the gasket comprises a vermiculite sealing face bonded to a serrated metal core or a spiral wounded gasket.
  • the gasket may preferably be a comb profile gasket.
  • a further gasket is provided between the inlet cone and a flange of a furnace and/or coil outlet, wherein the gasket comprises a vermiculite sealing face bonded to a serrated metal core or a spiral wounded gasket.
  • the conically shaped wall comprises at least one erosion protection rib projecting radially inwards into the gas flow passageway, the at least one erosion protection rib covering at least one fixing means in a top view from the inlet side.
  • the baffle plate is axially supported by the at least one erosion protection rib.
  • the tubes of the shell and tube heat exchanger are formed from a first material and the conically shaped wall of the inlet cone is formed of a second material, the first material having a lower heat resistance than the second material.
  • the present disclosure relates to a process for cracking hydrocarbons, in particular a process for the production of olefins, wherein the cracked gas is passed through a transfer line exchanger of the present disclosure.
  • the present disclosure relates to an apparatus for cracking hydrocarbons, in particular for the production of olefins, the apparatus comprising a cracking furnace and a transfer line exchanger of the present disclosure.
  • fixing means are mechanical components that are configured to secure the baffle plate too the remainder of the inlet cone.
  • the fixing means may encompass complementary components that engage in at least one of a form fit, force fit or an adhesive bond.
  • the fixing means may for example be a bolt that connects the baffle plate to the remainder of the inlet cone, in particularly the conically shaped wall.
  • the baffle plate may comprise a complementary formed opening or groove in which the bolt can be fittingly received.
  • the conically shaped wall may comprise a protrusion protruding radially towards the baffle plate into a corresponding opening.
  • the transfer line exchanger is located downstream of a cracking furnace and designed to receive the high-temperature gas stream expelled from the cracking furnace.
  • the high-temperature gas stream is received by the transfer line exchanger via the inlet cone and passes through the gas flow passageway from the inlet side of the inlet cone to its outlet side which is connected to the shell and tube heat exchanger.
  • the high-temperature gas cools down during its passage through the shell and tube heat exchanger and is further conveyed.
  • a "heat resistant metallic material” encompasses metallic materials, which have a solidus temperature of from 900°C to 1500°C, particularly from 1000°C to 1400°C, a specific heat capacity of 400 to 550 J/(kg K).
  • the heat resistant metallic material may comprise a thermal conductivity of 5 to 50 W/(m K), particularly from 10 to 25 W/(m K) measured at 20°C.
  • the heat resistant metallic material may comprise a 0.2% yield strength of from 150 to 600 MPa, preferably 150 to 550 MPa, more preferably from 150 to 500 MPa measured at 20°C.
  • the 0.2% yield strength at between 800 to 900°C may range from 70 to 400 MPa, preferably from 90 to 350 MPa, more preferably from 120 to 330 MPa.
  • the heat resistant metallic material may comprise a Vickers hardness measured at 20° of at least 100 HV up to about 1000 HV. Preferably, the Vickers hardness may range from 120 HV up to about 250 HV. about 950 HV.
  • the inlet cone is usually made of metal and comprises a refractory lining, e.g. a lining of concrete for erosion protection.
  • a refractory lining becomes brittle and breaks under the constant impact of e.g. coke particles contained in the high-temperature gas stream. the cone.
  • solid fragments are generated which can lead to severe damage of pipes and the connected shell and tube heat exchanger.
  • due to erosion and breaking of the refractory hot-spots may be formed on the outside of the cone.
  • such inlet cones have to be provided with a touch protection.
  • the heat resistant metallic material is selected from the group consisting of high temperature heat resistant cast stainless steel, solid cast iron and aluminum doped material.
  • the solid cast iron may for example be chromium, nickel and aluminum doped.
  • the inlet cone does not comprise a refractory lining, in particular concrete.
  • the inner surface of the inlet cone may additionally be at least partially coated with an erosion protection coating. Therefore, in some embodiments, at least part of the inner surface further comprises an erosion protection coating.
  • the term "the inner surface is exposed to the gas flow passageway" includes embodiments, in which the inner surface is provided with a coating of up to 1 mm. In some embodiments, the coating has a thickness of 0.1 to 0.5 mm, more preferably 0.15 to 0.3 mm. In some embodiments, the erosion protection coating may increase the Vickers hardness measured at 20°C up to about 950 HV.
  • the erosion protection coating may be a thermal coating obtained from a spray coating material formed of Cr 3 C 2 and a NiCr alloy.
  • the spray coating material may comprise at least 50 wt.-%, at least 60 wt.-%, preferably at least 70 wt.-% of Cr 3 C 2 , based on the total weight of the spray coating material.
  • the spray material may in one embodiment comprise about 75 wt.-% of Cr 3 C 2 .
  • the spray coating material may comprise up to 95 wt.-%, up to 90 wt.-%, preferably up to 80 wt.-% of Cr 3 C 2 .
  • the content of Ni in the spray coating material may be around 15 to 25 wt.-%, preferably, the content of Ni in the spray coating material may be about 20 wt.-%. Additionally, or alternatively, the content of C in the spray coating material may be less than 15 wt.-%. In some embodiments, the C content in the spray coating material may be 10 wt.-%.
  • the conically shaped wall is solid between the inner surface and the radially outwards facing outer surface.
  • the conically shaped wall comprises a hollow volume formed between the inner surface and an outer surface.
  • the hollow volume may be filled with a filling material having a lower thermal conductivity than the inner surface and/or outer surface.
  • the filling material is at least one of air, ceramic fiber or mineral wool. It was found that the hollow volume for one serves as thermal insulation and secondly, the hollow volume leads to a reduction of weight while retaining the material in the outer area and at the cone outlet flange of the transfer line exchanger.
  • the inlet cone is exposed to high-temperature gas, so the temperature on the inside of the inlet cone is much higher than the one outside of the inlet cone, which puts additional strain on the inlet cone itself, but also on the baffle plate and respective fixing means.
  • the inlet cone further comprises at least one stabilizing bar formed at the outlet side and being arranged between a front face of the conically shaped wall and the shell and tube heat exchanger.
  • the at least one stabilizing bar is welded to the front face of the conically shaped wall.
  • a flange is used to secure the inlet cone to the flange of the shell and tube heat exchanger.
  • flange connection in particular the sealing between the flanges is known to fail in case a refractory lining is provided. This may be caused by the growth of the refractory at higher temperatures and/or due to tiny coke particles penetrating between the inlet cone and the main body of the shell and tube heat exchanger which causes the refractory lining to "float up" and push against the flange.
  • a loose flange causes gas leakage.
  • the inlet cone is formed as a solid component, i.e. without a hollow volume between the radial inside facing wall and the radial outside facing wall of the inlet cone, it is preferred that the flange of the inlet cone is formed of a high-alloy material, in particular a high-alloy material on a chromium and nickel basis.
  • a comb profile gasket is provided between the shell and tube heat exchanger and the inlet cone, wherein the gasket comprises a vermiculite sealing face bonded to a serrated metal core or a spiral wounded gasket.
  • the gasket may be compressed between the flange of the shell and tube heat exchanger and the flange of the inlet cone.
  • the gasket may be arranged in the flange joint via a main load connection (German: Krafthaupt gleich) or an off load connection (German: Kraftneben gleich).
  • a main load connection German: Krafthaupt gleich
  • an off load connection German: KraftnebenMED
  • An off load connection refers to a flanged joint, in which the gasket is located in a recess within the joint so that it is compressed until the flange plates are in direct contact with each other.
  • the flanged joint may be secured by bolts.
  • the gasket may be compressed by bolt loads.
  • a further gasket may be provided between a lower flange of the inlet cone and a flange of a furnace and/or coil outlet.
  • the gasket may be a comb profile gasket comprising a vermiculite sealing face bonded to a serrated metal core or a spiral wounded gasket.
  • the lower flange of an inlet cone and/or the flange of a furnace and/or coil outlet are formed as ring type joint flanges.
  • Ring type joint flanges are formed as metallic plates having a deep groove cut into its face. Metallic ring type joint gaskets sit in the groove to seal the flange pair.
  • the inlet cone is equipped with a baffle plate arranged in the gas flow passageway between the inlet side and the outlet side of the inlet cone.
  • the baffle plate is intended to slow down the solid content of the high-temperature gas stream, thereby minimizing the erosion caused by said high-velocity particles hitting the tube sheets and tubes of the shell and tube heat exchanger.
  • the baffle plate is made of a solid base on which a number of concentric rings with increasing diameter are stacked spaced apart from each other.
  • the base plate and the rings may be made of a high-temperature resistant metallic material.
  • the baffle plate is fixed to the conically shaped wall of the inlet cone via fixing means.
  • fixing means e.g. bolts
  • the fixing means may be arranged in a radial pattern extending from the conically shaped wall of the inlet cone to the baffle plate.
  • the number of fixing means may be chosen according to need.
  • the baffle plate is attached to the conically shaped wall by at least two, preferably 3 or more fixing means.
  • the fixing means for fixing the baffle plate to the conically shaped wall are also affected by the impact with high-velocity solid particles present in the gas stream entering the inlet cone. Accordingly, the fixing means are also endangered by erosion which might result in loosening or even detachment of the baffle plate.
  • the conically shaped wall of the inlet cone may comprise at least one erosion protection rib projecting radially inwards into the gas flow passageway and arranged to cover at least one fixing means.
  • the at least one erosion protection rib may in one embodiment be arranged below and in support of the fixing means in the direction of flow of the high-temperature gas entering the inlet cone.
  • the at least one erosion protection rib is welded to the conically shaped wall of the inlet cone. In an alternatively exemplary embodiment, the at least one erosion protection rib forms an integral part of the conically shaped wall of the inlet cone.
  • the at least one erosion protection rib may be connected to the fixing means by way of welding or with the help of screws.
  • the at least one erosion protection rib and the respective fixing means are an integrally formed part attached to the baffle plate by way of tongue and groove.
  • the integral part comprises an extension part which is configured to fit into a corresponding groove of the baffle plate.
  • the baffle plate is axially supported by the at least one erosion protection rib.
  • the inlet cone is fixed to the shell and tube heat exchanger.
  • the flange at the outlet side of the inlet cone may be fixed to a corresponding flange of the shell and tube heat exchanger.
  • the tubes of the shell and tube heat exchanger are formed from a first material and the conically shaped wall of the inlet cone is formed of a second material, the first material having a lower heat resistance than the second material. This allows for adaptation of the materials in view of their thermal capacity.
  • the transfer line heat exchanger of the present disclosure is intended to be employed in cracking processes. Therefore, in another aspect, the present disclosure relates to a process for cracking hydrocarbons, in particular a process for the production of olefins, wherein the cracked gas is passed through a transfer line exchanger of the present disclosure. It was found that the transfer line heat exchanger of the present disclosure enables uniform gas flow in the tubes. The risk of tubes clogging due to fouling is minimized.
  • the present disclosure relates to an apparatus for cracking hydrocarbons, in particular for the production of olefins, the apparatus comprising a cracking furnace and a transfer line exchanger of the present disclosure.
  • the transfer line exchanger is connected to the cracking furnace via its inlet cone. After entering the inlet cone coming from the cracking furnace, the high-temperature gas stream passes through the tubes of the shell and tube heat exchanger before being further processed.
  • Figure 1 shows a transfer line exchanger 1 of the present disclosure comprising an inlet cone 2 having an inlet side 2a and outlet side 2b.
  • the outlet side 2b is fixed to a shell and tube heat exchanger 3.
  • the inlet cone 2 is equipped with a conically shaped wall 4 extending in an axial direction from the inlet side 2a to the outlet side 2b of the inlet cone 2.
  • a baffle plate 5 is arranged in the gas flow passageway formed by the conically shaped wall 4. High-temperature gas from a cracker furnace enters the inlet cone 2 at the inlet side 2a, passes through the gas flow passage formed by the conically shaped wall 4 and enters the shell and tube heat exchanger 3.
  • Figure 2 shows different embodiments of the inlet cone 2 attached to the shell and tube heat exchanger 3 (not fully shown).
  • the baffle plate 5 is attached to the conically shaped wall 4 of the inlet cone 2 by fixing means, in particular a bolt 6a, which bolt projects radially from the baffle plate and is screwed into the conical shaped wall.
  • the fixing means may covered by an erosion protection rip 7a which may be welded to the conically shaped wall 4.
  • the bolt may be fixed to the erosion protection rip, e.g. by screwing or even by welding.
  • the erosion protection rip 7a may, in an alternative embodiment, be monolithically formed with the conical shaped wall as a unitary component.
  • the baffle plate 5 is attached to the conically shaped wall 4 of the inlet cone 2 and by fixing means in the form of a plate 6b fittingly received in a radial opening of the baffle plate 5 and radially projecting out of the opening.
  • the plate 6b is covered by an erosion protection rib 7b which is fixed to the plate 6b by way of screw 8.
  • the erosion protection rib 9 comprises an extension part 9a, which is configured to fit into a corresponding groove of the baffle plate 5.
  • Figure 3 refers to an embodiment of the transfer line exchanger 1 of the present disclosure wherein the inlet cone 2 comprises a hollow volume 10.
  • the hollow volume may be filled with a filling material having a lower thermal conductivity than the inner surface and/or outer surface.
  • the filling material is at least one of air, ceramic fiber or mineral wool.
  • a comb profile gasket 11 which connects the inlet cone 2 to the shell and tube heat exchanger 3 and runs around the perimeter of the inlet cone 2, as shown in the enlarged view.
  • the comb profile gasket 11 is arranged in a main load connection meaning that the gasket floats between the flange plates such that a direct contact between the flange plates is prevented and a gap extends between the flange plates adjacent to the gasket 11. The force acts directly on the gasket, allowing a targeted application of the surface pressure.
  • the gasket may be arranged in an off load connection, in which the gasket is received in a recess and compressed until the flange plates are in direct contact with each other.
  • connection bolts arranged radially further outside than the gasket.
  • the bolt connections are indicated in the figures with the evenly dashed lines. Multiple bolt connections may be circumferentially distributed on the flanges such that an even compression force is applied and leakage is prevented.
  • a further comb profile gasket as described above may be provided for the flange arranged at the inlet side 2a.
  • Said comb profile gasket may seal the flange connection between the flange of the inlet cone 2 at the inlet side 2a and a flange of a furnace and/or coil outlet (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP22210111.5A 2022-11-29 2022-11-29 Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée Pending EP4379305A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22210111.5A EP4379305A1 (fr) 2022-11-29 2022-11-29 Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée
PCT/EP2023/083243 WO2024115423A1 (fr) 2022-11-29 2023-11-28 Échangeur de conduite de transfert pourvu d'un cône d'entrée présentant une résistance à l'érosion améliorée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22210111.5A EP4379305A1 (fr) 2022-11-29 2022-11-29 Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée

Publications (1)

Publication Number Publication Date
EP4379305A1 true EP4379305A1 (fr) 2024-06-05

Family

ID=84367189

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22210111.5A Pending EP4379305A1 (fr) 2022-11-29 2022-11-29 Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée

Country Status (2)

Country Link
EP (1) EP4379305A1 (fr)
WO (1) WO2024115423A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1190958A (en) * 1966-06-24 1970-05-06 Lummus Co Connector Duct
US4161192A (en) 1975-07-22 1979-07-17 Allied Chemical Corporation Transfer line exchanger inlet cone
US6464949B1 (en) * 1996-06-25 2002-10-15 Institut Francais Du Petrole Steam cracking installation with means for protection against erosion
KR101418137B1 (ko) 2011-03-25 2014-07-09 에스케이이노베이션 주식회사 폐열회수를 위한 열교환기의 내열성 콘
US20210123683A1 (en) * 2017-11-17 2021-04-29 Lg Chem, Ltd. Heat exchanger
US20210190435A1 (en) 2016-02-18 2021-06-24 Nova Chemicals (International) S.A. Cracked gas quench heat exchanger using heat pipes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1190958A (en) * 1966-06-24 1970-05-06 Lummus Co Connector Duct
US4161192A (en) 1975-07-22 1979-07-17 Allied Chemical Corporation Transfer line exchanger inlet cone
US6464949B1 (en) * 1996-06-25 2002-10-15 Institut Francais Du Petrole Steam cracking installation with means for protection against erosion
KR101418137B1 (ko) 2011-03-25 2014-07-09 에스케이이노베이션 주식회사 폐열회수를 위한 열교환기의 내열성 콘
US20210190435A1 (en) 2016-02-18 2021-06-24 Nova Chemicals (International) S.A. Cracked gas quench heat exchanger using heat pipes
US20210123683A1 (en) * 2017-11-17 2021-04-29 Lg Chem, Ltd. Heat exchanger

Also Published As

Publication number Publication date
WO2024115423A1 (fr) 2024-06-06

Similar Documents

Publication Publication Date Title
US8210245B2 (en) Shell-and-tube heat exchanger comprising a wear-resistant tube plate lining
US5362454A (en) High temperature heat exchanger
US11466942B2 (en) Anti-erosion device for a shell-and-tube equipment
US4961761A (en) Cyclone separator wall refractory material system
JP2001506312A (ja) 保護耐火挿入体を有する燃料噴射ノズル
EP3116976B1 (fr) Revêtement interne de tambour d'unité de cokéfaction différée
US11378224B2 (en) Liner for insulating high temperature process piping against thermal fatigue failure
EP4379305A1 (fr) Échangeur de ligne de transfert avec cône d'entrée présentant une résistance à l'érosion améliorée
EP3266851B1 (fr) Échangeur de chaleur pour désactiver un gaz de réaction
EA033734B1 (ru) Устройство и способ для конверсии метана, использующие сверхзвуковой проточный реактор
US1989614A (en) Corrosion resistant liner for tubular articles
RU2745273C2 (ru) Охлаждающее устройство для горелки реактора газификации
AU700338B2 (en) Tubular heat exchanger for connection downstream of a thermal-cracking installation
EP4134614A1 (fr) Échangeur de conduite de transfert avec revêtements par pulvérisation thermique
KR102277759B1 (ko) 쉘-및-튜브 장비

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR