Abstract: The invention concerns a distillation column (1) comprising means (21) for conveying at least one mixture to be distilled to the column, means (23) for drawing at least one fluid enriched in one constituent of the mixture from the column, inside the column, an evaporator-condenser (3) and means (25) for conveying a gas to be condensed and a liquid to be evaporated to the evaporator-condenser as well as means for removing the condensed gas and the evaporated liquid, at least one module of packing materials (5) located above the evaporator-condenser and at least one firebreak barrier (7A, 7B, 7C) between the evaporator-condenser and the module of packing materials.