CPC C10G 1/10 (2013.01) [C07C 2/76 (2013.01); C07C 4/04 (2013.01); C08F 10/02 (2013.01); C10B 53/07 (2013.01); C10G 1/002 (2013.01); C10G 11/18 (2013.01); C07C 2/54 (2013.01); C10G 2300/1003 (2013.01); C10G 2300/202 (2013.01); C10G 2300/205 (2013.01); C10G 2300/304 (2013.01); C10G 2300/305 (2013.01); C10G 2400/02 (2013.01); C10G 2400/04 (2013.01); C10G 2400/08 (2013.01); C10G 2400/20 (2013.01); C10G 2400/22 (2013.01); C10G 2400/26 (2013.01)] | 12 Claims |
7. A process for converting waste plastic into useful chemicals comprising:
(a) selecting waste plastics containing polyethylene and/or polypropylene;
(b) pyrolyzing the waste plastics and recovering a pyrolysis oil and optionally wax comprising a naphtha/diesel fraction and a heavy fraction;
(c) passing the pyrolysis oil and wax from (b) to a refinery FCC unit along with virgin crude oil with volume flow of the pyrolysis oil comprising about 50 volume % or less of total hydrocarbon flow to the FCC unit;
(d) recovering a C3-C5 olefin/paraffin mixture from the FCC unit; and
(e) passing the C3-C5 olefin/paraffin mixture to a refinery alkylation unit.
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