Method for decoking fired heater tubes

Details Method for decoking fired heater tubes Method for decoking fired heater tubes

1980-04-24

1981-10-27

Fisher, Richard V.

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 8, 134 30, 134 39, B08B 902

Patent

active

042971470

ABSTRACT:
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.

REFERENCES:
patent: 1939112 (1933-12-01), Eulberg
patent: 2285157 (1942-06-01), Grayson
patent: 3073687 (1963-01-01), McCune
patent: 3082073 (1963-03-01), McAnneny
patent: 3745110 (1973-07-01), Allred
patent: 4048757 (1977-09-01), Kubus et al.
patent: 4203778 (1980-05-01), Nunciato et al.

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