NOVELTY - Fabricating ethers by etherification of olefins by alcohols comprises: reacting reagents separately or by mixing, pure or diluted reagents in at least one main reactor to obtain equilibrium; collecting the reaction product and non-converted reagents leaving the main reactor and introducing reagents in a reactive distillation column by a feeder; and extracting a part of the liquid phase and/or gas phase over the feeder, and reinjecting directly in a column after cooling.    USE - The process is useful for fabricating ethers, preferably tert-alkylethers and treating a hydrocarbon charge containing 3-7C, preferably 4-6C isoolefins (claimed).    ADVANTAGE - The process is simple and inexpensive. The distillation column improves the conversion rate.    DETAILED DESCRIPTION - Process for fabricating ethers by etherification of olefins by alcohols comprises: reacting reagents separately or by mixing, pure or diluted reagents in at least one main reactor to obtain equilibrium; collecting the reaction product and non-converted reagents leaving the main reactor and introducing reagents in a reactive distillation column by a feeder, where the column contains at least one reaction area containing a catalytic bed; and extracting a part of the liquid phase and/or gas phase over the feeder, and reinjecting directly in a column after cooling to a lower temperature of a reaction area at a value enhancing the shifting of thermodynamic equilibrium towards the etherification reaction to obtain ether. INDEPENDENT CLAIMS are included for:    (1) a distillation column (20) for the production of ethers by the process, comprising at least one reaction area (21) containing a catalytic bed, a lateral feeder (26) for introducing, in the column, the reaction product and non-converted reagents exiting from a main etherification reactor, where the lateral feeder is provided with a lateral pipe (30) for extracting and reinjecting of which the ends (30a, 30b) for extracting and reinjecting open laterally in the column for extracting a part of the liquid phase and/or gas phase from the column and reinjecting into the column, and in that the pipe is equipped with a means of cooling for cooling the extracted part; and    (2) a manufacturing unit of ethers for the implementation of the process comprising at least one main etherification reactor followed by the reactive distillation column.    DESCRIPTION OF DRAWING(S) - The figure shows a unit for manufacturing ethers.    Distillation column (20)    Reaction area (21)    Lateral feeder (26)    Lateral pipe (30)    Ends. (30a, 30b)