Parallel low-temperature flue gas cross-flow purification equipment and low-temperature flue gas treatment system

The invention discloses parallel low-temperature flue gas cross-flow purification equipment and a low-temperature flue gas treatment system.The parallel low-temperature flue gas cross-flow purification equipment comprises an adsorption tower body and a plurality of adsorbent cylinders, each adsorbent cylinder comprises an inner cylinder and an outer cylinder, and an adsorbent cavity is used for containing an adsorbent to form an adsorbent layer; the plurality of adsorbent cylinders are arranged in the adsorption tower body in a mutually nested manner, the gas chambers and the adsorbent cylinder sections are alternately arranged in the flue gas flowing direction in the adsorption tower body, and the plurality of corresponding adsorbent cylinder sections in the radial direction of the adsorbent cylinders form an adsorbent cylinder section layer; wherein the flue gas sequentially penetrates through the plurality of adsorbent cylinder sections in the upstream adsorbent cylinder section layer along one of the insi