OLEFINS PRODUCTION - TVK

More documents

Recommendations

Info

Cold section block diagram39Cold section 1Precooling, , drying, deethanizer– Cracked gas cooling to drying temperature– Cracked gas drying to eliminate water content– Cooling to -40°C C (cooling with propylene refrigerantand cold streams from the low temperature section)– Separation of C2- and C3+ fraction (deethanizer(deethanizer)C3+ processing– C3/C4+ separation– C3 hydrogenation: conversion of methyl-acetylene andpropadiene to propylene and propane– C3H6/C3H8 separation: propylene product, propanerecycle– C4/C5 separation40
Cold section 2C2 hydrogenation– Acetylene is selectively hydrogenated to ethylene– Max. 1 ppm acetylene downstream the catalytic reactorLow temperature section (cold train)– C2 minus fraction is cooled with ethylene refrigerant andexpanded cold streams (-145 C)– Separation of C2 from C1 and hydrogen from methane: ethylene,ethane, and almost all methane is condensed, the remaining gasconsists of a hydrogen-rich rich fractionC2 splitter– To separate ethylene (top product) and ethane (recycled tofeed)41Safety aspects42
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 18 and 19: Hot section in O-2OFurther cracked
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

Create successful ePaper yourself

Delete template?

Save as template?