Patent ID: 8500888

Claim:
A regeneration tower, which desorbs adsorbed substances from an adsorbent to which harmful substances in an exhaust-gas are adsorbed, the regeneration tower comprising: a regeneration tower main body having a long trunk and configured so that a heating unit heating the adsorbent, a separation part separating desorbable substances as a desorbed gas from the heated adsorbent, and a cooling unit cooling the adsorbent from which the desorbable substances have been desorbed by heating are communicatively disposed in one direction and the heating unit and the cooling unit have approximately the same sectional outer diameter; and desorbed gas discharge passages through which the desorbed gas is discharged, wherein the separation part includes an inner barrel part and a flow velocity reduction part that reduces a flow velocity of the desorbed gas, and the desorbed gas discharge passages are connected to a downstream side of the flow velocity reduction part.