Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1977-06-07
1979-01-23
Levine, Herbert
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208130, 260683R, C10G 938
Patent
active
041360150
ABSTRACT:
In a process for the thermal cracking of hydrocarbons 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 maintained 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.
REFERENCES:
patent: 3408417 (1968-10-01), Sogawa et al.
Britt Herbert I.
Kamm Gerard R.
Kearns James D.
Khavarian Cyrus R.
Milks David
Levine Herbert
O'Brien, Jr. Gerald R.
Union Carbide Corporation
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