EP1525289B1 - Procede et tube a ailettes pour separation thermique d'hydrocarbures - Google Patents

Procede et tube a ailettes pour separation thermique d'hydrocarbures Download PDF

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Publication number
EP1525289B1
EP1525289B1 EP03725176A EP03725176A EP1525289B1 EP 1525289 B1 EP1525289 B1 EP 1525289B1 EP 03725176 A EP03725176 A EP 03725176A EP 03725176 A EP03725176 A EP 03725176A EP 1525289 B1 EP1525289 B1 EP 1525289B1
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EP
European Patent Office
Prior art keywords
finned tube
tube according
profile
fin
ribs
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
EP03725176A
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German (de)
English (en)
Other versions
EP1525289A1 (fr
EP1525289B9 (fr
Inventor
Peter WÖLPERT
Benno Ganser
Dietlinde Jakobi
Rolf Kirchheiner
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.)
Schmidt and Clemens GmbH and Co KG
Original Assignee
Schmidt and Clemens GmbH and Co KG
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 Schmidt and Clemens GmbH and Co KG filed Critical Schmidt and Clemens GmbH and Co KG
Priority to EP10012045A priority Critical patent/EP2298850A1/fr
Publication of EP1525289A1 publication Critical patent/EP1525289A1/fr
Publication of EP1525289B1 publication Critical patent/EP1525289B1/fr
Application granted granted Critical
Publication of EP1525289B9 publication Critical patent/EP1525289B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • 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
    • C10G9/20—Tube furnaces
    • 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
    • C10G9/24—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by heating with electrical means
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • 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
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/80—Additives
    • C10G2300/805—Water
    • C10G2300/807—Steam

Definitions

  • the invention relates to a finned tube for the thermal cracking of hydrocarbons in the presence of steam, in which the feed mixture is passed through externally heated tubes with helical inner fins.
  • tube furnaces For the high-temperature pyrolysis of hydrocarbons (petroleum derivatives), tube furnaces have proven in which a hydrocarbon / water vapor mixture at temperatures above 750 ° C by rows of single or meandering arranged pipes (cracking tubes) made of heat-resistant chromium-nickel steel alloys with high oxidation or Scaling resistance and high carburization resistance is performed.
  • the coils are made of vertically extending straight pipe sections, which are connected to each other via U-shaped pipe bend or arranged parallel to each other; they are usually heated with the help of sidewall and partly with the help of floor burners and therefore have a burner facing so-called sun side and the opposite by 90 ° offset, that is in the direction of the rows of tubes extending so-called shadow side.
  • the mean tube wall temperatures (TMT) are sometimes over 1000 ° C.
  • the lifetime of the cracking tubes depends very much on the creep resistance and the carburization resistance as well as on the coking rate of the pipe material.
  • Decisive for the rate of coking, that is for the growth of a layer of carbon deposits (pyrolysis) on the pipe inner wall are, in addition to the type of hydrocarbons used, the gap gas temperature in the inner wall and the so-called CrackMrfe, behind the influence of the system pressure and the residence time in the pipe system hides on the ⁇ thylenausbeute.
  • the gap sharpness is set on the basis of the mean outlet temperature of the cracked gases (eg 850 ° C).
  • the chromium-nickel steel alloys used as pipe material with 0.4% carbon over 25% chromium and over 20% nickel, for example 35% chromium, 45% nickel and optionally 1% niobium have a high carburization resistance, the carbon diffuses Defects of the oxide layer in the pipe wall and leads there to a considerable carburizing, which can go up to carbon contents of 1% to 3% in wall depths of 0.5 to 3 mm. Associated with this is a significant embrittlement of the pipe material with the Danger of cracking at, thermal cycling especially when starting and stopping the furnace.
  • centrifugally cast tubes can only be produced with a cylindrical wall, special shaping processes are required, for example an electrolytically removing machining or a shaping welding process, in order to produce internal finned tubes.
  • the object of the invention is to improve the cost-effectiveness of the thermal cracking of hydrocarbons in tubular ovens with externally heated tubes with helical internal ribs.
  • the fin tube according to the invention takes a swirl flow at the rib edges detaching vortex, so that it does not come to a local return of Wirbei in the manner of a self-contained circular flow in the Ripentäler.
  • the mean residence time is lower than in the smooth tube and also more homogeneous over the cross section (see. Fig. 7 ). This is confirmed by the higher total speed in the profile tube with swirl (profile 3) compared to the tube with straight ribs (profile 2). This is ensured when the ribs extend at an angle of preferably 25 ° to 32.5 ° relative to the tube axis.
  • a layer of laminar flow characteristic of turbulent flows forms with greatly reduced heat transfer. It leads to increased formation of pyrolysis coke with also poor thermal conductivity. Both layers together require a higher heat input or a higher burner power. This increases the tube wall temperature (TMT) and consequently shortens the life.
  • TMT tube wall temperature
  • the invention avoids this fact that the inner circumference of the profile by a maximum of 5%, for example 4% or 3.5%, based on the circumference of the Rippentäler touching enveloping circle.
  • the relative profile perimeter is at most 1.05 of the enveloping circle perimeter.
  • the area difference of the profile tube according to the invention ie its unwound inner surface, based on a smooth tube with the envelope circle diameter a maximum of + 5% or 1.05 times the smooth tube surface.
  • the tube profile according to the invention allows a lower specific tube weight (kg / m) compared to a finned tube, in which the inner circumference of the profile is at least 10% larger than the circumference of the enveloping circle. This shows a comparison of two pipes with the same hydraulic diameter and accordingly the same pressure loss and the same thermal performance result.
  • a further advantage of the profile circumference (relative profile circumference) according to the invention which is based on the enveloping circle circumference, consists in a faster heating of the feed gas at a reduced tube wall temperature.
  • the swirl flow produced according to the invention considerably reduces the laminar layer; it is also connected to a pipe center directed velocity vector, which reduces the residence time of cracking radicals or fission products on the hot tube wall and their chemical and catalytic conversion to pyrolysis coke.
  • the not inconsiderable in inner profile tubes with high ribs temperature differences between Rippentälind and ribs are compensated by the swirl flow according to the invention. This increases the time interval between two necessary decoking.
  • a not insignificant temperature difference results between the ridge crests and the bottom of the ridge valleys.
  • the residence time of the fouling-prone fission products is shorter in the case of spiral-shaped internal fins; In individual cases, this depends on the nature of the ribs.
  • the curve clearly shows that the higher peripheral speed of the profile 8 is consumed with 4.8 mm high ribs within the ridge valleys, while the peripheral speed of the inventive profile with a rib height of only 2 mm penetrates into the core of the flow. Although the peripheral speed of the profile 4 with only 3 ribs is approximately as high, but causes no spiral acceleration of the core flow.
  • the profile of the invention causes according to the curve in the diagram of Fig. 2 a spiral acceleration in the Rippentälern (upper curve branch), which covers wide area of the pipe cross-section and thus causes a homogenization of the temperature in the pipe.
  • the lower peripheral speed at the rib caps also ensures that there is no turbulence and backflow.
  • Fig. 3 three test tubes are shown with their data in cross section, including the inventive profile 3.
  • the diagrams show the temperature profile over the pipe radius (radius) on the shadow and the sun side.
  • a comparison of the diagrams shows the lower temperature difference between the pipe wall and center and the lower gas temperature at the pipe wall in the profile 3 according to the invention.
  • the swirl flow generated according to the invention ensures that the fluctuation of the inner wall temperature above the pipe circumference, that is between sun and shade side is below 12 ° C, although the usually arranged in parallel rows of pipe coils of a tubular furnace with the help of Seltenwandbrennem heated only on opposite sides or with Combustion gases are acted upon and the tubes thus each have a Brennem facing sun side and a 90 ° offset to the dark side.
  • the mean tube wall temperature, ie the difference in the tube wall temperature between the sun and shadow sides leads to internal stresses and therefore determines the service life of the tubes. So the results from the diagram of the Fig.
  • a particularly favorable temperature distribution occurs when the isotherms of the tube inner wall to the core of the flow are spiral.
  • the process according to the invention should be operated with a view to high olefin yield with comparatively short tube length such that the homogeneity factor of the temperature is above the cross section and the homogeneity factor of the temperature relative to the homogeneity factor of a smooth tube (H G ⁇ ) exceeds 1.
  • the flow pattern of core and spin flow generated according to the invention can be achieved with a finned tube, in which the flank angle of each of the Length of a pipe section continuous ribs, that is, the outer angle between the rib edges and the radius of the tube 16 ° to 25 °, preferably 19 ° to 21 ° is such a flank angle ensured in conjunction with a rib pitch of 20 ° to 40 °, for example 22, 5 ° to 32.5 ° that results in the Rippentälern not a more or less self-contained, behind the rib flanks in the Rippentäler returning vortex flow that leads to the emergence of unwanted "twisters" in the Rippentälern, that is closed vortex pigtails.
  • the ribs and the rib valleys located between the ribs are mirror-symmetrical in cross-section and form a wavy line, each with the same radii of curvature.
  • the flank angle then results between the tangents of the two radii of curvature at the point of contact and the radius of the tube.
  • the ribs are relatively flat; Rib height and flank angle are coordinated so that the hydraulic diameter of the profile of the ratio 4 x free cross section / profile circumference is equal to or greater than the inner circle of the profile. The hydraulic diameter is therefore in the inner third of the profile height.
  • the rib height and the number of ribs increase with increasing diameter so that the swirl flow is maintained in the direction and strength required for the action of the profile.
  • the ratio of the quotients of the heat transfer coefficients Q R / Q 0 to the quotient of the pressure losses .DELTA.P R / .DELTA.P 0 in the water test using the Equilibrium laws and using the mediated for a naphtha / steam mixture Reynolds numbers, preferably 1.4 to 1.5, where R denotes a finned tube and 0 denotes a smooth tube.
  • the superiority of the finned tube according to the invention in comparison to a smooth tube (profile 0) and a finned tube with paraxial ribs (profile 1), in which the radial distance between the Rippentälern and the Rippenkuppen is 4.8 mm illustrate the data of the following Table.
  • the finned tubes all had 8 ribs and the same enveloping circle.
  • the finned tube according to the invention gives in the water test a higher by a factor of 2.56 heat transfer (Q R ) compared to the plain tube with only a factor of 1.76 increased pressure drop ( ⁇ P R ).
  • Fig. 7 are a tube with a smooth inner wall (smooth tube) faced three different profile tubes, including a tube according to the invention with 8 ribs with a slope of 30 °.
  • the hydraulic diameter, the axial velocity, the residence time and the pressure loss are indicated.
  • Output data were the flow rates of a 38 mm internal diameter smooth tube in use, which is identical to the hydraulic diameter. These data were converted to warm water according to the similarity laws (same Reynolds numbers) and based on the experiments (see ratio of the quotients of heat transfer and pressure loss for tests with water and the related homogeneity factor in the calculation with gases).
  • the heat from the pipe wall is introduced into the flow and thus more evenly distributed than in a normal undirected turbulent flow (smooth tube, profiles 1 and 2).
  • the spiraling flow distributes the particles more evenly across the cross section while the acceleration on the flanks reduces the average residence time.
  • the higher pressure loss of the profile 3 results from the peripheral speed.
  • the cause is the strong constriction of the flow and the loss of friction on the large inner surface of the profile.
  • the finned tube according to the invention can be produced, for example, from a centrifugally cast tube by turning the ends of a tube with axially parallel ribs against each other, or by forming the inner profile by preforming a centrifugally cast tube, for example by hot forging, hot drawing or cold forming via a profile tool, for example a flying die Mandrel or a mandrel with an inner profile of the tube corresponding outer profile is generated.
  • a profile tool for example a flying die Mandrel or a mandrel with an inner profile of the tube corresponding outer profile is generated.
  • Cutting machines for internal profiling of pipes are in different variants, for example from the German patent 195 23 280 known. These machines are also suitable for producing a finned tube according to the invention.
  • the forming temperature When hot forming, the forming temperature should be adjusted so that it comes in the area of the inner surface to a partial destruction of the grain structure and therefore later under the influence of the operating temperature to a recrystallization The result is a feinkömiges microstructure, the rapid diffusion of chromium, silicon and / or aluminum through the austenitic matrix to the inner surface of the tube and there for the rapid construction of an oxide protective layer leads.
  • the inner surface of the tube according to the invention should have the lowest possible roughness; it can therefore be smoothed, for example mechanically polled or electrolytically leveled.
  • iron or nickel alloys with 0.1% to 0.5% carbon, 20 to 35% chromium, 20 to 70% nickel, up to 3% silicon, up to 1% nlob, bis are suitable as pipe material for use in ethylene plants 5% tungsten and additions of hafnium, titanium, rare earths, or zirconium, in each case up to 0.5% and up to 6% aluminum.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (13)

  1. Tube à ailettes pour le craquage thermique d'hydrocarbures en présence de vapeur, caractérisé par des ailettes intérieures inclinées à un angle d'inclinaison de 20° à 40° par rapport à l'axe de tube et en forme de ligne ondulée s'étendant en hélice, avec des creux d'ailette et des sommets d'ailette contigus symétriquement de même rayon de courbure, dont l'angle de flanc (β) de la tangente respective au point de contact des deux rayons de courbure (R) par rapport à la perpendiculaire au rayon (Ri) du cercle qui touche les sommets d'ailette au point culminant d'un creux d'ailette ou d'un sommet d'ailette est compris entre 18° et 25°.
  2. Tube à ailettes selon la revendication 1, caractérisé en ce que l'angle d'inclinaison est compris entre 22,5° et 32,5°.
  3. Tube à ailettes selon la revendication 1 ou 2, caractérisé en ce que la circonférence intérieure du profil est plus grande de 5 % au maximum que la circonférence du cercle enveloppant qui touche les creux d'ailette.
  4. Tube à ailettes selon une des revendications 1 à 3, caractérisé en ce que l'angle de flanc (β) des ailettes est compris entre 19° et 21°.
  5. Tube à ailettes selon une des revendications 1 à 4, caractérisé par six à douze ailettes au total.
  6. Tube à ailettes selon une des revendications 1 à 5, caractérisé en ce que le diamètre hydraulique du tube à ailettes est au moins égal au diamètre du cercle intérieur (Ri).
  7. Tube à ailettes selon une des revendications 1 à 6, caractérisé en ce que le rapport des coefficients de transfert thermique QR/QQ au quotient des pertes de pression ΔPR/ΔP0 est compris entre 1,4 et 1,5 dans l'essai à l'eau, R désignant un tube à ailettes et 0 un tube lisse.
  8. Tube à ailettes selon une des revendications 1 à 7, caractérisé en ce que le rayon de courbure (R) de la section d'ailette est compris entre 3,5 et 20 mm.
  9. Tube à ailettes selon une des revendications 1 à 8, caractérisé par une hauteur d'ailette (H) comprise entre 1,25 et 3 mm.
  10. Tube à ailettes selon une des revendications 1 à 9, caractérisé en ce que la section libre à l'intérieur de la circonférence de profil (Up) est comprise entre 85 et 95 % de la surface du cercle enveloppant (Fa).
  11. Tube à ailettes selon une des revendications 1 à 10, caractérisé en ce que la surface de profil (Fp) est comprise entre 40 et 50 % de la surface annulaire entre le cercle enveloppant et le cercle intérieur.
  12. Tube à ailettes selon une des revendications 1 à 11 en fonte centrifugée composée d'un alliage de nickel avec 0,1 à 0,5 % de carbone, 20 à 35 % de chrome, 20 à 70 % de nickel, jusqu'à 3 % de silicium, jusqu'à 1 % de niobium, jusqu'à 5 % de tungstène ainsi que respectivement jusqu'à 0,5 % de hafnium, titane, métaux terreux rares, zirconium et jusqu'à 6 % d'aluminium, fer résiduel.
  13. Tube à ailettes selon la revendication 12, dans lequel l'alliage contient isolément ou simultanément au moins 0,02 % de silicium, 0,1 % de niobium, 0,3 % de tungstène et 1,5 % d'aluminium.
EP03725176A 2002-07-25 2003-05-08 Procede et tube a ailettes pour separation thermique d'hydrocarbures Expired - Lifetime EP1525289B9 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10012045A EP2298850A1 (fr) 2002-07-25 2003-05-08 Tuyau profilé pour le craquage thermique d'hydrocarbure

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10233961A DE10233961A1 (de) 2002-07-25 2002-07-25 Verfahren zum thermischen Spalten von Kohlenwasserstoffen
DE10233961 2002-07-25
PCT/EP2003/004827 WO2004015029A1 (fr) 2002-07-25 2003-05-08 Procede et tube a ailettes pour separation thermique d'hydrocarbures

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10012045.0 Division-Into 2010-09-30

Publications (3)

Publication Number Publication Date
EP1525289A1 EP1525289A1 (fr) 2005-04-27
EP1525289B1 true EP1525289B1 (fr) 2011-09-28
EP1525289B9 EP1525289B9 (fr) 2012-02-29

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP03725176A Expired - Lifetime EP1525289B9 (fr) 2002-07-25 2003-05-08 Procede et tube a ailettes pour separation thermique d'hydrocarbures
EP10012045A Withdrawn EP2298850A1 (fr) 2002-07-25 2003-05-08 Tuyau profilé pour le craquage thermique d'hydrocarbure

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10012045A Withdrawn EP2298850A1 (fr) 2002-07-25 2003-05-08 Tuyau profilé pour le craquage thermique d'hydrocarbure

Country Status (22)

Country Link
EP (2) EP1525289B9 (fr)
JP (2) JP4536512B2 (fr)
KR (1) KR101023668B1 (fr)
CN (1) CN100523133C (fr)
AT (1) ATE526385T1 (fr)
AU (1) AU2003227737A1 (fr)
BR (1) BR0312919B1 (fr)
CA (1) CA2493463C (fr)
DE (1) DE10233961A1 (fr)
EA (1) EA010936B1 (fr)
ES (1) ES2374568T3 (fr)
HR (1) HRP20050072A2 (fr)
IL (1) IL166229A (fr)
MA (1) MA27325A1 (fr)
MX (1) MXPA05001070A (fr)
NO (1) NO337398B1 (fr)
NZ (1) NZ537827A (fr)
PL (1) PL204769B1 (fr)
PT (1) PT1525289E (fr)
RS (1) RS20050060A (fr)
UA (1) UA85044C2 (fr)
WO (1) WO2004015029A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018185167A1 (fr) 2017-04-07 2018-10-11 Schmidt + Clemens Gmbh + Co. Kg Tuyau et dispositif pour réaliser une fission thermique d'hydrocarbures
DE102017003409A1 (de) * 2017-04-07 2018-10-11 Schmidt + Clemens Gmbh + Co. Kg Rohr und Vorrichtung zum thermischen Spalten von Kohlenwasserstoffen

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* Cited by examiner, † Cited by third party
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PL2037202T3 (pl) 2006-07-05 2019-03-29 Nippon Steel & Sumitomo Metal Corporation Metalowa rura do reakcji krakingu termicznego
US20120060727A1 (en) * 2009-03-17 2012-03-15 ToTAL PETROCHECMICALS RESEARCH FELUY Process for quenching the effluent gas of a furnace
EP2813286A1 (fr) * 2013-06-11 2014-12-17 Evonik Industries AG Tube de réaction et procédé de fabrication de cyanure d'hydrogène
FR3033266B1 (fr) * 2015-03-05 2017-03-03 Ifp Energies Now Ensemble de collecte d'un fluide gazeux pour reacteur radial
US10611968B2 (en) 2015-07-09 2020-04-07 Sabic Global Technologies B.V. Minimizing coke formation in a hydrocarbon cracker system
JP6107905B2 (ja) * 2015-09-09 2017-04-05 株式会社富士通ゼネラル 熱交換器
CA3016280C (fr) * 2016-04-12 2023-10-17 Basf Antwerpen Nv Reacteur pour four de craquage
DE102016012907A1 (de) * 2016-10-26 2018-04-26 Schmidt + Clemens Gmbh + Co. Kg Tieflochbohrverfahren sowie Werkzeug für eine Tieflochbohrmaschine und Tieflochbohrmaschine
ES2975159T3 (es) * 2017-04-07 2024-07-03 Schmidt Clemens Gmbh Co Kg Tubo y dispositivo para el craqueo térmico de hidrocarburos
CA3062425C (fr) * 2017-05-05 2022-05-31 Exxonmobil Chemical Patents Inc. Tube de transfert de chaleur pour traitement d'hydrocarbures
CA3079047A1 (fr) * 2017-10-27 2019-05-02 China Petroleum & Chemical Corporation Tuyau de transfert de chaleur ameliore, et four de pyrolyse et four de chauffage atmospherique et sous vide le comprenant
GB2590363B (en) * 2019-12-09 2023-06-28 Paralloy Ltd Internally profiled tubes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950718A (en) * 1994-07-11 1999-09-14 Kubota Corporation Heat exchange tubes

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB969796A (en) 1961-03-01 1964-09-16 Exxon Research Engineering Co Apparatus for heating fluids and tubes for disposal therein
JPS58132081A (ja) * 1982-01-08 1983-08-06 Idemitsu Petrochem Co Ltd 炭化水素の熱分解方法
DE3716665A1 (de) * 1987-05-19 1988-12-08 Vdm Nickel Tech Korrosionsbestaendige legierung
DE4427859A1 (de) * 1994-08-05 1995-10-26 Siemens Ag Rohr mit auf seiner Innenseite ein mehrgängiges Gewinde bildenden Rippen sowie Dampferzeuger zu seiner Verwendung
DE19523280C2 (de) * 1995-06-27 2002-12-05 Gfm Gmbh Steyr Schmiedemaschine zum Innenprofilieren von rohrförmigen Werkstücken
DE19629977C2 (de) * 1996-07-25 2002-09-19 Schmidt & Clemens Gmbh & Co Ed Werkstück aus einer austenitischen Nickel-Chrom-Stahllegierung
ID24474A (id) * 1997-06-10 2000-07-20 Exxon Chemical Patents Inc Tungku perapian pyrolsis dengan coil radiant berbentuk u bersirip secara internal
JPH11199876A (ja) * 1998-01-16 1999-07-27 Kubota Corp コーキング減少性能を有するエチレン製造用熱分解管

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5950718A (en) * 1994-07-11 1999-09-14 Kubota Corporation Heat exchange tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018185167A1 (fr) 2017-04-07 2018-10-11 Schmidt + Clemens Gmbh + Co. Kg Tuyau et dispositif pour réaliser une fission thermique d'hydrocarbures
DE102017003409A1 (de) * 2017-04-07 2018-10-11 Schmidt + Clemens Gmbh + Co. Kg Rohr und Vorrichtung zum thermischen Spalten von Kohlenwasserstoffen

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CN1671824A (zh) 2005-09-21
DE10233961A1 (de) 2004-02-12
BR0312919A (pt) 2005-07-05
EA010936B1 (ru) 2008-12-30
AU2003227737A1 (en) 2004-02-25
NO20050493L (no) 2005-03-17
JP2010150553A (ja) 2010-07-08
PT1525289E (pt) 2012-01-04
PL373967A1 (en) 2005-09-19
NO337398B1 (no) 2016-04-04
IL166229A (en) 2008-11-26
PL204769B1 (pl) 2010-02-26
KR20050052457A (ko) 2005-06-02
BR0312919B1 (pt) 2014-06-24
JP2005533917A (ja) 2005-11-10
CA2493463C (fr) 2013-01-15
MA27325A1 (fr) 2005-05-02
EP2298850A1 (fr) 2011-03-23
MXPA05001070A (es) 2005-10-05
UA85044C2 (ru) 2008-12-25
ES2374568T3 (es) 2012-02-17
EP1525289A1 (fr) 2005-04-27
KR101023668B1 (ko) 2011-03-25
EA200500258A1 (ru) 2005-08-25
ATE526385T1 (de) 2011-10-15
RS20050060A (en) 2007-09-21
NZ537827A (en) 2007-04-27
WO2004015029A1 (fr) 2004-02-19
CN100523133C (zh) 2009-08-05
CA2493463A1 (fr) 2004-02-19
EP1525289B9 (fr) 2012-02-29
IL166229A0 (en) 2006-01-15
JP4536512B2 (ja) 2010-09-01
HRP20050072A2 (en) 2005-08-31

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