David Milks, 77PO Box 3695, Lake Jackson, TX 77566

4952745, Aug 28, 1990

May 4, 1988

7/190114

Cyril Tellis - Charleston WV
Saburo Hori - Iwaki, JP
David Milks - Charleston WV

Union Carbide Chemicals and Plastics Company Inc. - Danbury CT

C07C 404

585648

Improved operation of the ACR process is achieved by regulating the reactions within a small area in the combustion feedstock mixing zone, "Scorch Zone", by the addition of steam or other fluid such as ethane at the point of feed injection.

4136015, Jan 23, 1979

Jun 7, 1977

5/804227

Gerard R. Kamm - South Charleston WV
David Milks - Charleston WV
James D. Kearns - Charleston WV
Herbert I. Britt - Charleston WV
Cyrus R. Khavarian - South Charleston WV

Union Carbide Corporation - New York NY

C10G 938

208129

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.