Surgil ESIA Report - Volume III - EKN

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Surgil ESIA Report - Volume III A.3.5.2. PP Process The PP plant consists of a single train made up of a catalyst feed system and a reactor system followed by monomer flash, recycling, stripping, and polymer finishing and handling. With reference to Figure A.14, the plant will include a series of two reactor systems for homopolymer and impact copolymer production. The first reactor system is comprised of two loop type reactors operating in series followed by one fluid-bed gas phase reactor as the second reactor system. The bulk polymeriser has a residence time of about 1 to 1.5 hours which will produce about 50% conversion per pass of propylene. The gas phase fluidised bed reactor has a 0.5 – 1.0 hour residence time. The polymer leaving the flash tank is purged with steam at the condenser to recover the residual monomer and to deactivate the remaining catalyst. The polymer powder is then sent to the downstream powder storage and finishing sections where the powder and stabilisers are homogenised, extruded and pelletised. Pellets are dehydrated, dried and separated from coarse and fine and then transferred to silos. HP and LP blowdown systems plus a guard cyclone are provided for emergency flare relief, the latter of which prevents polymer entrainment to flare. Figure A.14: Schematic of Generic PP process Source: Technical Review Report, Nexant, Feb 2011 254793/RGE/GEV/03/01/03/08/2011 16
Surgil ESIA Report - Volume III Appendix B. Cuttings Management Procedure This Appendix includes a translation of the Uz-Kor drill cuttings and muds management procedure. 254793/RGE/GEV/03/01/03/08/2011 17
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