METHOD FOR OPERATING A TEMPERATURE SWING ADSORPTION PLANT AND TEMPERATURE SWING ADSORPTION PLANT

摘要

The invention describes a method for operating a temperature swing adsorption plant (10) having three adsorption units (1, 2, 3) which are operated out of phase with respect to one another, respectively in an adsorption phase, then in a feed phase, then in a regeneration phase, then in a flush phase, and then in a cooling phase, wherein in the adsorption phase a first gas mixture at a first temperature is guided over an adsorbent in the adsorption units (1, 2, 3) with obtention of a second gas mixture and adsorption onto the adsorbent of components of the first gas mixture, in the regeneration phase the adsorption units (1, 2, 3) are heated to a second temperature above the first temperature and the components adsorbed by the adsorbent during the adsorption mode are at least partially desorbed, and in the flush phase the components which were desorbed during the regeneration mode and which are present in the adsorption units (1, 2, 3) after the regeneration phase are at least partially flushed using a third gas mixture with obtention of a fourth gas mixture. In the cooling phase, the adsorption units (1, 2, 3) are at least partially cooled to the first temperature. It is provided that, in repeated first operating time periods which alternate with second operating time periods, respectively one of the adsorption units (1, 2, 3) is operated in the adsorption phase at the same time as one of the adsorption units (1, 2, 3) is operated in the flush phase and one of the adsorption units (1, 2, 3) is operated in the feed phase, and during the first operating time periods part of the second gas mixture of the adsorption unit (3) being operated in the flush phase is supplied as the third gas mixture or as part of the third gas mixture and at least part of the fourth gas mixture is supplied to the adsorption unit (1, 2, 3) being operated in the feed phase. The invention also relates to a corresponding temperature swing adsorption plant (100).