Method and apparatus for conducting a thermochemical absorption and desorption reaction between a gas and a solid

Method of conducting a thermochemical absorption or desorption reaction between a gas and a solid in the presence of a heat-carrying fluid which reaction permits a heat exchange between the reaction medium and an external medium, said reaction taking place in an enclosure in contact with a second reactor which is the seat of a reaction using at least one gas, characterized in that it comprises:

• a first step in which, for the pressure prevailing in the reactor, the variation of the mean power of the reaction is determined as a function of the difference which exists between the temperature of the heat-carrying fluid and the equilibrium temperature of the reaction, given by the Clapeyron diagram, thus making it possible to define an optimum zone in which the reaction takes place with maximum mean power,
• and a second step in which the reaction takes place, in which a reference temperature is imposed on the heat-carrying fluid such that the reaction takes place in the optimum zone.