Pyrolytic furnace for the thermal cracking of hydrocarbons

Details Pyrolytic furnace for the thermal cracking of hydrocarbons Pyrolytic furnace for the thermal cracking of hydrocarbons

1992-08-28

1993-12-21

Warden, Robert J.

Mineral oils: apparatus

Vaporizing

Tubular

12223523, 165169, 196116, 422197, 422204, C10G 920

Patent

active

052718093

ABSTRACT:
In a pyrolytic furnace for the thermal cracking of hydrocarbons, cracking tubes are combined into uniformly arranged groups in the radiation zone of the pyrolytic furnace. The cracking tubes in the radiation zone consist of straight, vertically extending tube sections, manifold tube sections, and tube elbows. The cracking tubes of one group are joined, in the throughflow direction, via manifold tube sections and terminate in an outlet tube. The cracking tubes are arranged in the radiation zone in one plane, except for the juts of the tube elbows. The straight tube sections, subjected to a throughflow from the bottom toward the top and combined in the outlet tube, are located between the straight tube sections subjected to a throughflow from the top toward the bottom and leading into the tube elbows. The curvatures of respectively one-half of the tube elbows of one group extend in the same direction, the direction of curvature of the halves of the tube elbows being in opposition. Prior to entering the radiation zone, the cracking tubes can be extended in one step (two 90.degree. curvatures) about cracked gas coolers arranged above the outlet tubes. In this way, an especially advantageous vertical arrangement of the cracked gas coolers is made possible.

REFERENCES:
patent: 1961233 (1934-06-01), Mayr
patent: 3237610 (1966-03-01), von Wiesenthal et al.
patent: 3407789 (1968-10-01), Hallee et al.
patent: 4160701 (1979-07-01), Dorner et al.
patent: 5151158 (1992-09-01), Bowen et al.
WO 90/12851, Published 01 Nov. 1990, on International Application No. PCT/FR90/00272, filed 13 Apr. 1990 of Procedes Petroliers et Petrochimiques for "Process and Apparatus for Decoking a Steam-Craking Installation".
European Search Report for EP 92 11 3909, dated 29 Sep. 1992, 2 pages.

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