Control of a cracking furnace

Details Control of a cracking furnace Control of a cracking furnace

1981-02-25

1983-08-23

Chin, Gary

Boots, shoes, and leggings

208DIG1, 422 62, 422110, G06F 1546

Patent

active

044007841

ABSTRACT:
Measurements of process variables associated with a cracking furnace are utilized to calculate the actual maximum tube skin temperature for the cracking furnace. The thus calculated actual maximum tube skin temperature is then utilized to derive a control signal which may be utilized to manipulate the rate at which heat is supplied to the cracking furnace. The accurate prediction of the actual tube skin temperature based on actual process measurements enables the conversion rate for the cracking furnace to be substantially maximized while preventing damage to the cracking tubes.

REFERENCES:
patent: 3112880 (1963-12-01), Pollock
patent: 3271472 (1966-09-01), Ogle et al.
patent: 3824388 (1974-07-01), Cugini
patent: 4187542 (1980-02-01), Ball et al.
patent: 4231753 (1980-11-01), Stewart
patent: 4236218 (1980-11-01), Killebrew, Jr. et al.
patent: 4318178 (1982-03-01), Stewart et al.
"Computer Control of Severity in Ethylene Cracking Furnaces" by Baxley, Jr., Published in Instrumentation Technology, pp. 39-42, Nov., 1971.
"You Can Capitalize on Light Feed Composition Changes" by Stewart et al., Published in the Oil and Gas Journal, pp. 98-111, Apr. 2, 1979.

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