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1. WO2004015029 - METHOD AND RIBBED TUBE FOR THERMALLY CLEAVING HYDROCARBONS

Publication Number WO/2004/015029
Publication Date 19.02.2004
International Application No. PCT/EP2003/004827
International Filing Date 08.05.2003
Chapter 2 Demand Filed 06.02.2004
IPC
C10G 9/20 2006.01
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING 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
9Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
14in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
18Apparatus
20Tube furnaces
F28F 1/40 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
1Tubular elements; Assemblies of tubular elements
10Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
40the means being only inside the tubular element
CPC
C10G 2300/807
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION
2300Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
80Additives
805Water
807Steam
C10G 9/20
CCHEMISTRY; METALLURGY
10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
GCRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION
9Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
14in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
18Apparatus
20Tube furnaces
C22C 19/05
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
19Alloys based on nickel or cobalt
03based on nickel
05with chromium
C22C 38/40
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
C22C 38/48
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
48with niobium or tantalum
F28F 1/40
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
28HEAT EXCHANGE IN GENERAL
FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
1Tubular elements; Assemblies of tubular elements
10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
40the means being only inside the tubular element
Applicants
  • SCHMIDT + CLEMENS GMBH + CO. KG [DE]/[DE] (AllExceptUS)
  • WÖLPERT, Peter [DE]/[DE] (UsOnly)
  • GANSER, Benno [DE]/[DE] (UsOnly)
  • JAKOBI, Dietlinde [DE]/[DE] (UsOnly)
  • KIRCHHEINER, Rolf [DE]/[DE] (UsOnly)
Inventors
  • WÖLPERT, Peter
  • GANSER, Benno
  • JAKOBI, Dietlinde
  • KIRCHHEINER, Rolf
Common Representative
  • KÖNIG, Reimar
Priority Data
102 33 961.925.07.2002DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND RIPPENROHR ZUM THERMISCHEN SPALTEN VON KOHLENWASSERSTOFFEN
(EN) METHOD AND RIBBED TUBE FOR THERMALLY CLEAVING HYDROCARBONS
(FR) PROCEDE ET TUBE A AILETTES POUR SEPARATION THERMIQUE D'HYDROCARBURES
Abstract
(DE)
Bei einem Verfahren zum thermischen Spalten von Kohlenwasserstoffen in Anwesenheit von Dampf, wird das Einsatzgemisch durch aussenbeheizte Rohre mit wendelförmigen Innenrippen geführt und zur Vergleichmässigung der Temperatur in der Rohrwandung und über den Rohrquerschnitt sowie zur Verminderung der Ablagerung von Pyrolysekoks an der Rohrinnenwand eine Drallströmung im Gasgemisch erzeugt und mit zunehmendem radialem Abstand von den Rippen allmählich in eine Kernzone mit überwiegend axialer Strömung eingeleitet wird.
(EN)
The invention relates to a method for thermally cleaving hydrocarbons in the presence of steam, during which the feed mixture is guided through externally heated tubes with helical inner ribs, and a swirling flow is produced inside the gas mixture in order to homogenize the temperature inside the tube wall and over the tube cross-section and to prevent the deposition of pyrolysis coke on the inner wall of the tube. The swirling flow is gradually introduced with a predominantly axial flow into a core zone and at an increasing radial distance from the ribs.
(FR)
L'invention concerne un procédé de séparation thermique d'hydrocarbures en présence de vapeur, selon lequel un mélange est guidé à travers des tubes munis d'ailettes intérieures hélicoïdales, qui sont chauffés depuis l'extérieur. Pour compenser la température dans la paroi des tubes et sur la section transversale des tubes, ainsi que pour réduire le dépôt de coke de pyrolyse au niveau de la paroi intérieure des tubes, un écoulement spiroïdal est produit dans le mélange gazeux et est introduit progressivement avec un écoulement essentiellement axial et avec un écart croissant par rapport aux ailettes, dans une zone nodale.
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