An oil refinery is an industrial process plant where crude oil is transformed. Petroleum refineries transform crude oil into petroleum products that are used as fuels for transportation, heating, road paving and electricity generation, and as feedstocks for the manufacture of chemicals, i.e. feedstock for the petrochemical industry. Differences in the structure of these molecules explain their different physical and chemical properties. Saul Ameliach Petrochemicals. Understanding petrochemical plants Olefins include ethylene, propylene and butadiene, which are feedstocks for making plastics. Aromatics include benzene, toluene and xylene, which are feedstocks for making synthetic......

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