Installation for the thermal drying of wood by CO2 sequestration having at least one drying module under CO2 atmosphere which comprises: - a drying chamber comprising at least one hollow cylindrical or quasi-cylindrical drying tube of suitable diameter and length for drying wood of selected dimensions, - CO2 supply means for injecting gaseous CO2 into the drying chamber; - heating means for heating the circulating CO2; - gas circulation means enabling CO2 to be forced to circulate from one end of the drying chamber to the other in a closed circuit in the direction of the length of the chamber, with injection and extraction positioned at the ends of the drying chamber, and the atmosphere inside the drying chamber to be renewed; - CO2 recycling means configured to allow the separation of water vapour and gaseous CO2 present in the atmosphere extracted from the chamber during drying - metrological means for measuring variations in the physical measurements of the drying module during heating, and - a computer control system for controlling the CO2 supply means, the circulation means, the heating means, and the recycling means, according to programmes, set values and drying times appropriate as a function of the quality of the dried wood sought, and processing means for measuring, compare and readjust the operating parameters to the set values in the event of deviation, the drying module being characterised in that the gas circulation means comprise a flow reversal module configured to allow the circulation of CO2 in a first direction of circulation in the drying chamber between an inlet duct connecting the heating means to the drying chamber, configured to control the injection of the CO2 gas mixture into the drying chamber and an outlet duct connecting an outlet end of the drying chamber to said heating means, forming a closed-loop circulation duct for the CO2 gas mixture, and in a second direction of circulation opposite to the first direction, to circulate the CO2 longitudinally in the direction of the length of the drying chamber with an injection and an extraction positioned at the ends of the drying chamber and capable of making the thermal distribution uniform in the said drying chamber. - a drying chamber comprising at least one hollow cylindrical or quasi-cylindrical drying tube of suitable diameter and length for drying wood of selected dimensions, - CO2 supply means for injecting gaseous CO2 into the drying chamber; - heating means for heating the circulating CO2; - gas circulation means enabling CO2 to be forced to circulate from one end of the drying chamber to the other in a closed circuit in the direction of the length of the chamber, with injection and extraction positioned at the ends of the drying chamber, and the atmosphere inside the drying chamber to be renewed; - CO2 recycling means configured to allow the separation of water vapour and gaseous CO2 present in the atmosphere extracted from the chamber during drying - metrological means for measuring variations in the physical measurements of the drying module during heating, and - a computer control system for controlling the CO2 supply means, the circulation means, the heating means, and the recycling means, according to programmes, set values and drying times appropriate as a function of the quality of the dried wood sought, and processing means for measuring, compare and readjust the operating parameters to the set values in the event of deviation, the drying module being characterised in that the gas circulation means comprise a flow reversal module configured to allow the circulation of CO2 in a first direction of circulation in the drying chamber between an inlet duct connecting the heating means to the drying chamber, configured to control the injection of the CO2 gas mixture into the drying chamber and an outlet duct connecting an outlet end of the drying chamber to said heating means, forming a closed-loop circulation duct for the CO2 gas mixture, and in a second direction of circulation opposite to the first direction, to circulate the CO2 longitudinally in the direction of the length of the drying chamber with an injection and an extraction positioned at the ends of the drying chamber and capable of making the thermal distribution uniform in the said drying chamber.