An ethylene oxide adsorption recovery system includes a tower body defining a gas channel extending longitudinally therein. A sidewall of the tower body further comprises a plurality of mounting holes disposed longitudinally along the side wall and in communication with the gas channel. A bottom portion of the tower body includes a first pipe in communication with the gas channel, and a top portion of the tower body includes a second pipe in communication with the gas channel. A plurality of adsorption panels is coupled to the tower body through corresponding respective mounting holes of the plurality of mounting holes, each of the plurality of adsorption panels extends into the gas channel. A sealing door is movably coupled to the sidewall of the tower body and configured to selectively fix each of the plurality of adsorption panels to a respective mounting hole of the plurality of mounting hole.