August 2010

Gas Processing Developments

Optimize operating parameters of absorbers/strippers in gas plants

Better recovery definition of C3s and C4s from gas absorber/stripper can lower costs

Nava, J., Bantrel Co.

Several factors affect the recovery of C3s and C4s in gas recovery refinery type plants, typically found in delayed cokers, fluid catalytic cracking (FCC) and other downstream gas processing units. These factors include: flowrates, stream compositions, pressures, recovery specifications, solvent temperatures and volume of solvents required.1,2 Operating efficiency of the absorber/stripper gas plant section also involves the amount of lean oil entering the secondary absorber and the volume of stabilized naphtha recycled back to the primary absorber.3,4 A sensitivity study was done to optimize the design of an absorber/stripper gas plant section to improve recovery of C3s and C4s. Recovery t

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