PYROLYSIS FURNACE TUBES

The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing ele...

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Bibliographische Detailangaben
Hauptverfasser:	CHUN, CHANGMIN, SPICER, DAVID B
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ALLOYS BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CRACKING HYDROCARBON OILS DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS FUELS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEAT EXCHANGE IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL JOINTS OR FITTINGS FOR PIPES LIGHTING LUBRICANTS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY METHODS OF STEAM GENERATION MINERAL WAXES MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PIPES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA STEAM BOILERS STEAM GENERATION SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TECHNICAL GASES CONTAINING CARBON MONOXIDE THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing element comprises an aluminum-containing alloy. The mixing element's aluminum-containing alloy can be the same as or different from the tubular member's aluminum-containing alloy. Other aspects of the invention relate to pyrolysis furnaces which include such weldments, and the use of such pyrolysis furnaces for hydrocarbon conversion processes such as steam cracking. Cette invention concerne des structures soudées utiles en tant que tubes de transfert de chaleur dans des fours de pyrolyse. Plus précisément, l'invention concerne des tubes qui sont utiles dans des fours de pyrolyse. Lesdites structures soudées comprennent un élément tubulaire et au moins un élément de mélange. Ledit élément tubulaire comprend un alliage contenant de l'aluminium. Ledit élément de mélange comprend un alliage contenant de l'aluminium. L'alliage contenant de l'aluminium de l'élément de mélange peut être identique ou différent de l'alliage contenant de l'aluminium de l'élément tubulaire. D'autres aspects de l'invention se rapportent à des fours de pyrolyse, qui comprennent de telles structures soudées, et à l'utilisation de tels fours de pyrolyse pour des procédés de conversion d'hydrocarbures tels qu'un vapocraquage.