Structured packing can improve hot potassium carbonate CO₂ absorption and regeneration through high mass-transfer efficiency and low pressure drop. Packing selection must account for concentrated-solution viscosity, activators, corrosion inhibitors, salt crystallization, foaming and circulating solids. Uniform liquid distribution, gas pretreatment, solution filtration, heat tracing and startup or shutdown control are essential. The absorber and regenerator should be evaluated separately because their hydraulic and process priorities differ.

Structured packing improves THF solvent recovery through high separation efficiency, low pressure drop and low liquid holdup, but it cannot break the THF–water azeotrope. Final dehydration requires an additional separation step. Because THF can form peroxides that concentrate in heavy bottoms, the system must also control oxygen ingress, reboiler residence time, residue withdrawal and stagnant liquid. Feed pretreatment, material compatibility, liquid distribution and vacuum performance must be evaluated together.

Structured packing supports DMF solvent recovery by combining high mass-transfer efficiency with low pressure drop and low liquid holdup. Vacuum operation can reduce DMF degradation, color formation and heavy-residue production, but feed water, formic acid, dimethylamine, salts, resins and pigments must also be controlled. Packing geometry, feed pretreatment, liquid distribution, corrosion-resistant materials, reboiler residence time and cleaning requirements should be evaluated together.

Structured packing can improve ethylene oxide absorption and stripping through high mass-transfer efficiency, low pressure drop and low liquid holdup. Absorber design must control heat release, liquid temperature and reactor-loop backpressure, while stripper design must limit temperature, residence time and glycol formation. Packing geometry, gas and liquid distribution, material cleanliness, mist removal, cooling and total ethylene oxide inventory must be evaluated as one integrated system.

Structured packing can improve hydrogen peroxide vacuum concentration through low pressure drop, low liquid holdup and efficient water removal. These features help lower operating temperature and reduce peroxide residence time. However, trace metals, incompatible materials, contaminated surfaces and stagnant liquid may accelerate decomposition and oxygen generation. Packing geometry, material qualification, fabrication cleanliness, liquid distribution, mist removal, drainage and vacuum-system safety must therefore be evaluated together.