| abstract |
A method of producing cumene, comprising: converting plastic into hydrocarbon liquid and pyrolysis gas; feeding the hydrocarbon liquid to a hydrotreater to produce a hydrocarbon product and a first gas stream; feeding the hydrocarbon product to a heavy unit to generate reformate, a second gas stream, and hydrogen; separate reformate into a non-aromatics recycle stream and a second aromatics stream ( C6 +aromatics); separate non-aromatics The aromatics recycle stream is recycled to the reforming unit; the second aromatics stream is separated into benzene, C7 , C8, C9 , C10 and C11 + aromatics ; C7 , C9 and/or C10 aromatics are contacted with disproportionation and transalkylation catalyst/ H2 to produce benzene and xylenes; C11 + aromatics are transported to a hydrotreater; pyrolysis gas, first and/or The second gas stream is introduced into the first separator to produce a first propylene stream, a first C 2 and C 4 unsaturated stream and a saturated gas (H 2 and C 1-4 saturated hydrocarbons); the first C 2 and C 1-4 saturated hydrocarbons are combined; The C4 unsaturated stream is introduced into a metathesis reactor to produce a second propylene stream; and benzene and the first and/or second propylene streams are fed to an alkylation unit to produce cumene. |