OLEFINS PRODUCTION - TVK

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Hot section in O-2OFurther cracked gas cooling by direct oil injectiondownstream the quench coolers (220 - 250 °C)Oil Fractionation (primary(fractionation) ) and QuenchOil Cycles• Two quench oil cycles (Pyrolysis(Fuel Oil and Pyrolysis Gas Oil)are used as heat carrier to cool the cracked gas (~100 °C) andto shift the recovered heat to consumers• Both quench oil cycles are formed by condensing the heavyends of the cracked gas• Process steam generation by hot quench oilWater Scrubbing (Water quench column)• Cracked gas is cooled by water circulation to ambient (~30 °C)temperature to condense heavy gasoline and process (dilution)steam• Circulating water is withdrawn from the bottom of the columnand pumped to several consumers for low temperature heatrecovery35Hot section: Oil fractionating and waterquench column in O-2O36
Cracked gas compressionCracked gas is compressed with a 5-stage 5centrifugal compressor–Suction pressure: 0,5 bar (g)–Discharge pressure: 32-36 36 bar (g)The compressor is driven by anextraction/condensation steam turbine.Process water and gasoline are condensed in theinterstage coolers and knocked out in the interstageseparators. Gasoline is directed to hydrogenationand separation.Caustic Scrubbing: removal of the acid componentsCO2 and H2S in a 3-stage 3caustic scrubber37Cracked gas compressor in Olefin-238
Page 1 and 2: OLEFINS PRODUCTIONOlefins by steam
Page 3 and 4: Building block for petrochemicals -
Page 5 and 6: Hungary: ethylene produced by TVK o
Page 7 and 8: Ethylene at TVK1975: First steam cr
Page 9: Principle of the cracking process17
Page 12 and 13: Wide range of feedstocksGaseous fee
Page 14 and 15: Considerations for feedstocksParaff
Page 16 and 17: Olefin process overview31Cracking f
Page 20 and 21: Cold section block diagram39Cold se
Page 22 and 23: About safetySafety first concept ha
Page 24 and 25: Example for risk reduction: selecti
Page 26 and 27: Control systems in O-2O51Key equipm
Page 28 and 29: Crack gas compressor O-2 O 2 plant2
Page 30 and 31: Turbine driven BFW pump59Multistage
Page 32: Ethylene production costBasis: WE 2

OLEFINS PRODUCTION - TVK

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