Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – Diolefin product
Patent
1987-06-16
1988-08-09
Pal, Asok
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
Diolefin product
208106, 208132, 585615, 585614, 585648, 585649, 585650, C07C 404, C10G 900
Patent
active
047629584
ABSTRACT:
The present invention relates to a process for the preparation of olefins by the cracking of hydrocarbons consisting in passing a mixture of hydrocarbons and steam flowing in a cracking tube disposed inside a radiation zone of a furnace. The process is characterized in that an increase of the cracking temperature of the mixture between the inlet and the outlet of the radiation zone is associated to a non-homogeneous distribution of the thermal power of the furnace, greater at the beginning of the cracking tube than at the end, and to a reaction volume which is greater in the second half of the length tube than in the first one.
The present invention relates also to a cracking furnace in which between the inlet and the outlet of the radiation zone the diameter of the cracking tube increases and the thermal power of the heating means decreases.
REFERENCES:
patent: 2994724 (1961-08-01), Hillard et al.
patent: 3112880 (1963-12-01), Pollock
patent: 3306844 (1967-02-01), Briefley et al.
patent: 4342642 (1982-08-01), Bauer et al.
Bellet Serge
Martens Andre
Naphtachimie S.A.
Pal Asok
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