| CPC B01D 53/0462 (2013.01) [B01D 53/0438 (2013.01); B01D 2259/403 (2013.01); B01D 2259/40088 (2013.01)] | 15 Claims |
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1. A method for operating a temperature swing adsorption plant (100) 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 level is guided over an adsorbent in the adsorption units (1, 2, 3) with obtention of a second gas mixture, and components of the first gas mixture are adsorbed by the adsorbent,
in the regeneration phase, the adsorption units (1, 2, 3) are heated to a second temperature level above the first temperature level, and the components adsorbed onto the adsorbent in the adsorption phase are partially or completely desorbed,
in the flush phase, the components desorbed in the regeneration phase and present in the adsorption units (1, 2, 3) after the regeneration phase are flushed partially or completely by means of a third gas mixture with obtention of a fourth gas mixture, and
in the cooling phase, the adsorption units (1, 2, 3) are at least partially cooled to the first temperature level, wherein,
in repeated first operating periods which alternate with second operating periods, simultaneously, one of the adsorption units (1, 2, 3) is operated in the adsorption phase, 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 periods, a portion of the second gas mixture is supplied to the adsorption unit (3) operated in the flush phase as the third gas mixture or as part of the third gas mixture, and the fourth gas mixture or a portion of the fourth gas mixture is supplied to the adsorption unit (1, 2, 3) operated in the feed phase.
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15. A temperature swing adsorption plant (100) with three adsorption units (1, 2, 3), which is configured to operate the adsorption units (1, 2, 3) 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 the temperature swing adsorption plant (100) is furthermore configured,
in the adsorption phase, to guide a first gas mixture at a first temperature level over an adsorbent in the adsorption units (1, 2, 3) with obtention of a second gas mixture, and to absorb components of the first gas mixture by the adsorbent,
in the regeneration phase, to heat the adsorption units (1, 2, 3) to a second temperature level above the first temperature level, and to partially or completely desorb the components adsorbed by the adsorbent in the adsorption mode,
in the flush phase, to partially or completely flush the components desorbed in the regeneration mode and present in the adsorption units (1, 2, 3) after the regeneration phase by means of a third gas mixture with obtention of a fourth gas mixture, and
in the cooling phase, to at least partially cool the adsorption units (1, 2, 3) to the first temperature level, wherein the temperature swing absorption plant is further configured,
in repeated first operating periods that alternate with second operating periods, to respectively simultaneously operate one of the adsorption units (1, 2, 3) in the adsorption phase, one of the adsorption units (1, 2, 3) in the flush phase, and one of the adsorption units (1, 2, 3) in the feed phase, and
during the first operating periods, to supply a portion of the second gas mixture to the adsorption unit (3) operated in the flush phase as the third gas mixture or as part of the third gas mixture, and to partially or completely supply the fourth gas mixture to the adsorption unit (1, 2, 3) operated in the feed phase.
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