L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Air Liquide Sante

Vogtlin Instruments Ag

Gilbert Chevalier

Alain Villermet

Christian Larquet

Philippe Urner

Pascal DuPont

Fabian Waltz

Bertrand Guiberteau

The invention relates to a device for stirring a liquid in a reactor and for injecting a gas into the said liquid in order to form a gas-liquid dispersion, comprising a) a drive device () positioned above the reactor, provided with a vertical output shaft () fitted at its lower end with at least one axial flow rotor () immersed in the liquid, b) means for introducing gas (and) above the axial flow rotor (), c) a deflector () placed above the axial flow rotor () preventing the gas-liquid dispersion from rising, and d) a deflector () placed below the axial flow rotor () converting the axial flow of the said axial flow rotor into a radial flow. This device may be used in shallow basins.

Method for stirring a liquid and for injecting a gas into this liquid, suitable for shallow basins

An installation and a process for the recovery and/or purification of at least one portion of the nitrous oxide (N O) contained in a flow of waste gas containing nitrous oxide and at least one other gaseous compound, in which: (a) at least one nitrous oxide portion contained in the flow of waste gas is separated by permeation, and (b) at least a portion of the gaseous nitrous oxide separated in step (a) is recovered. Preferably, the source of the flow of waste gas is an industrial unit using an industrial process giving off the waste gas, preferably a unit for the production of adipic acid, a unit for the production of nitrous oxide, a unit for the production of glycoxylic acid or a unit for the production of nitric acid.

Process and installation for the recovery and/or purification of the nitrous oxide contained in a waste gas

The invention relates to a device for supplying a purified gas to a plant which is purged with purified gas. The device includes a feed line connected, on the one hand, to a source of substantially pure gas and, on the other hand, to an inlet of the plant. The purified gas being passed therethrough is contaminated with impurities. The device further includes a line which is intended to recover the contaminated gas at the outlet of the plant and is connected to the feed line. The lines are arranged one after the other downstream of where the recovery line is connected to the feed line, a compressor and a device for separating the impurities from the contaminated gas by permeation in order to supply a purified gas to the plant.

Device for supplying a purified gas to a plant purged using this purified gas

Growing community of inventors

Voisins le Bretonneaux, France

Gilbert Chevalier