Method for decoking fired heater tubes

Method of decoking furnace tubes using a turbulent stream of impact resistant, particle-enriched gas. Non-angular, non-abrasive particles are entrained at a concentration of about 0.1 to about 10 pounds per pound of gas, and the gas is introduced into the inlet end of the furnace tubes at a gas flow...

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Bibliographic Details
Main Authors WOODBURN; WILLIAM A, WHITE; NORMAN H, NUNCIATO; DAVID J
Format Patent
LanguageEnglish
Published 27.10.1981
Subjects
BLASTING
CHEMISTRY
CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE ORHEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
CRACKING HYDROCARBON OILS
FUELS
HEAT EXCHANGE IN GENERAL
HEATING
LIGHTING
LUBRICANTS
MECHANICAL ENGINEERING
METALLURGY
MINERAL WAXES
PEAT
PETROLEUM, GAS OR COKE INDUSTRIES
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
TECHNICAL GASES CONTAINING CARBON MONOXIDE
WEAPONS
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Summary:Method of decoking furnace tubes using a turbulent stream of impact resistant, particle-enriched gas. Non-angular, non-abrasive particles are entrained at a concentration of about 0.1 to about 10 pounds per pound of gas, and the gas is introduced into the inlet end of the furnace tubes at a gas flow rate corresponding to an outlet gas velocity of from about 5,000 feet per minute up to sonic velocity of said gas, preferably at an outlet gas velocity of about 14,000 to 40,000 feet per minute.
Bibliography:Application Number: US19800143333