C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/167
C10G 9/00 (2006.01) C10G 9/38 (2006.01)
Patent
CA 1116114
11,276 PROCESS FOR THE THERMAL CRACKING OF HYDOCARBONS ABSTRACT OF THE INVENTION In a system for the thermal cracking of hydro- carbons by the introduction of liquid petroleum feedstock in atomized form into a stream of hot combustion products formed by the combustion of fuel and oxidant in successive burner and mixing zone, constricting throat zone, a velocity acceleration diffuser zone and secondary cracking and reaction zone along the path of hot combustion product stream flow, an improvement is disclosed which comprises: effecting initial mixing, vaporization and cracking of said atomized liquid petroleum feedstock in said stream of hot combustion products in said burner and mixing zone main- tained at subsonic velocity flow; effecting substantially complete mixing and vaporization in said constricting throat zone wherein said stream is maintained, at exit, at sonic velocity flow; passing said stream through a velocity acceleration diffuser zone maintained at supersonic velocity flow; passing said stream through a shock region produced by cross-sectional expansion of a diffuser zone; and effecting a final thermal cracking conversion in said stream in a subsonic velocity additional cracking reaction zone before quenching of said stream. SPECIFICATION
303823
Britt Herbert I.
Kamm Gerard R.
Kearns James D.
Khavarian Cyrus R.
Milks David
Hopley William G.
Union Carbide Corporation
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