Societa' Italiana Resine S.i.r. S.p.a.

Euteco, S.p.a.

Societa' Italiana Resine S.p.a.

Gianni Torreggiani

Gioacchino Cocuzza

Benedetto Calcagno

Michele Sfregola

A process for the preparation of ethanolamines includes passing ammonia in counter-flow with water and a recycled ammoniacal solution through an absorption column provided with internally cooled bubbling-trays to obtain an ammoniacal solution containing from 20 to 50% by weight of ammonia, reacting the ammoniacal solution with ethylene oxide firstly in an isothermal reactor and then in an adiabatic reactor to obtain substantially complete conversion of the ethylene oxide to ethanolamines, removing by means of a desorption column and recycling unreacted ammonia and part of the water from the reaction product, evaporating a greater part of the remaining water in an evaporator and dehydrating the ethanolamines at low pressure.

Process for the preparation and the recovery of ethanolamines

Crude ethylene oxide present in the dilute aqueous solution resulting from the extraction with an aqueous solvent of ethylene oxide from the gaseous stream obtained by catalytic oxidation of ethylene is purified by desorption, liquefaction, distillation in a fractionating column and final desorption treatment to remove absorbed non-condensable gases. The fractionating column is heated by condensation of the water vapor evolved during desorption and a liquid stream of ethylene oxide rich in acetaldehyde is discharged from the bottom, treated to convert a fraction of said acetaldehyde into high-boiling products, distilled to remove the latter as bottoms and returned to the fractionating column.

Process for the purification of ethylene oxide

Process for the simultaneous separation of ethylene oxide and carbon dioxide from the gaseous mixtures obtained in the direct oxidation of ethylene with oxygen, comprising

Process for the simultaneous separation of ethylene oxide and carbon

A process for the production of ethylene glycol ethers by reacting ethylene oxide with monofunctional aliphatic alcohols, which comprises

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Busto Arsizlo (Varese), Italy

Gianni Torreggiani