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1. (WO2017168164) PROCESS FOR THE PREPARATION OF A LUBRICANT BASE STOCK COMPRISING THE SELECTIVE THERMAL DECOMPOSITION OF PLASTIC POLYOLEFIN POLYMER

Pub. No.:    WO/2017/168164    International Application No.:    PCT/GB2017/050907
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Fri Mar 31 01:59:59 CEST 2017
IPC: C10B 53/07
C10G 1/10
Applicants: TRIFOL RESOURCES LIMITED
ATKINS, Martin Philip
COLEMAN, Fergal
Inventors: ATKINS, Martin Philip
COLEMAN, Fergal
Title: PROCESS FOR THE PREPARATION OF A LUBRICANT BASE STOCK COMPRISING THE SELECTIVE THERMAL DECOMPOSITION OF PLASTIC POLYOLEFIN POLYMER
Abstract:
The present invention relates to a process for the preparation of a lubricant base stock from the thermal decomposition of plastic polymer. The present invention provides a process for preparing a lubricant base stock from the thermal decomposition of plastic polyolefin polymer, the method comprising the steps of: i) introducing plastic polyolefin polymer into a thermal reaction zone of a vacuum pyrolysis reactor; ii) heating the plastic polyolefin polymer at sub-atmospheric pressure, wherein the temperature in the thermal reaction zone of the reactor is from 500 °C to 750 °C, to induce thermal decomposition of the plastic polyolefin polymer and to form a thermal decomposition product effluent which comprises a major portion by weight of a C20 to C60 wax fraction; iii) condensing a vapour component of the thermal decomposition product effluent from the vacuum pyrolysis reactor; and iv) subjecting the C20 to C60 wax fraction of the thermal decomposition product to catalytic hydroisomerization in a hydroisomerization reactor in the presence of hydrogen to form the lubricant base stock; wherein the plastic polyolefin polymer comprises polyethylene and polypropylene in a polyethylene to polypropylene weight ratio of from 60:40 to 90:10.