초록

A process for eliminating organic oxygen-containing molecules such as alcohols and organic present in an organic or gaseous effluent is characterized in that the elimination is carried out by adsorbing said organic oxygen-containing molecules onto alumina agglomerates.

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The invention claimed is: 1. A process for eliminating organic oxygen-containing molecules present in an organic or gaseous effluent, comprising: the steps of adsorbing said organic oxygen-containing molecules onto alumina agglomerates with the following characteristics: a specific surface area of

The invention claimed is: 1. A process for eliminating organic oxygen-containing molecules present in an organic or gaseous effluent, comprising: the steps of adsorbing said organic oxygen-containing molecules onto alumina agglomerates with the following characteristics: a specific surface area of 10 m2/g or more; a compound selected from the group consisting of alkali metal compounds, alkaline-earth metal compounds and rare earth compounds with a total content by weight of said compounds of 50% or less; having a total pore volume of 30 ml/100 g or more if a doping compound is 5000 ppm or more, and their V70 Å is 10 ml/100 g or more, or having a total pore volume of 45 ml/100 g or more if the doping compound is below 5000 ppm. 2. A process according to claim 1, wherein said doping compound is selected from the group consisting of compounds based on sodium, potassium, calcium, magnesium and lanthanum. 3. A process according to claim 2, wherein said alumina agglomerates comprise a sodium compound. 4. A process according to claim 1, wherein said alumina agglomerates are in the form of beads. 5. A process according to claim 4, wherein the diameter of said beads is in the range 0.5 to 10 mm. 6. A process according to claim 1, wherein the alumina agglomerates are in the form of extruded materials. 7. A process according to claim 6, wherein the size of said extruded materials is in the range 0.5 mm to 5 mm. 8. A process according to claim 1, wherein said organic effluent is a hydrocarbon or a mixture of hydrocarbons. 9. A process according to claim 1, wherein said eliminating is carried out at ambient temperature. 10. A process according to claim 1, wherein the alumina agglomerates are periodically regenerated by treatment in a stream of hot gas. 11. A process according to claim 10, wherein said hot gas is an inert gas. 12. A process according to claim 11, wherein the temperature of said inert gas is at least 130째 C. 13. A process according to claim 10, wherein said hot gas is an oxidizing gas mixture or gas the temperature of which is at least 150째 C. 14. A process according to claim 13, wherein said oxidizing gas mixture or gas is selected from air, a further oxygen/nitrogen mixture and a mixture containing steam. 15. A process according to claim 10, wherein a plurality of hot gases are used in succession to regenerate the alumina agglomerates, said hot gases being inert. 16. The process of claim 1 wherein said compound is selected from the group consisting of alkali metal compounds, alkaline-earth metal compounds and rare earth compounds with a total content by weight of said compounds of 5000 ppm to 12%. 17. The process of claim 1, wherein said doping compounds, alkaline-earth metal compounds and rare earth compounds when their doping compound content is 35 ml/100 ppm or more, and the total pore volume is 35 ml/100 g or more, and their V70 Å is 35 ml/100 g.