Distillation Purification/Separation TRIZ Cases

Matching deethanizer and dehexanizer pressure cuts compressor and steam demand while recovering isobutane from polymer reactor effluent.

A staged flash distillation, membrane, and gas stripping route recovers boron trifluoride with low energy use and no wastewater.

Polyamine solvents selectively dissolve lignin while limiting cellulose loss, enabling sugar production with fewer biomass separation steps.

A solvent side draw and stab-in reboiler cut aromatics separation utility use while maintaining effective extractive distillation.

Direct stage heating and paraffin solvent absorption purify linear alpha olefins while avoiding costly overhead refrigeration and complex column sizing.

Mixed C4 streams are upgraded through etherification, decomposition, dimerization, and separation to deliver at least 95 wt% isobutylene and isooctene.

A settling tank removes polymer before distillation, cutting separation energy and time in oligomer production while improving solvent reuse.

Allowing hydrogen and methane to slip into an ethane-rich stream cuts deep separation cost and energy while preserving ethylene and propylene yields.

Dual solvent systems and reactor wash switching raise 1-hexene selectivity and purity while dissolving waxes and polymers that foul equipment.

A flash drum recovers styrene from polystyrene pyrolysis residue by vaporizing it from heavies, enabling high-purity monomer recovery.

A partitioned distillation column bottom separates low- and high-temperature zones to prevent polymer plugging and recover unreacted ethylene.