CO2 rectification separation and purification device with high purification rate

Abstract

The invention discloses a CO2 rectification separation and purification device with high purification rate, wherein the device comprises a rectification tower; the top of the rectification tower is communicated with an upper gas outlet pipe; one end, far away from the rectification tower,of the upper gas outlet pipe is communicated with a condenser, a liquid outlet of the condenser is communicated with an upper return pipe, and the liquid outlet of the condenser is communicated with an upper discharge pipe; and the bottom of the rectification tower is communicated with a lower liquid outlet pipe, one end, far away from the rectification tower, of the lower liquid outlet pipe is communicated with a reboiler, and an air outlet of the reboiler is communicated with a lower return pipe. When an arranged rotating shaft rotates, a rotary frame can be driven to rotate, heavy liquid in the rectification tower from top to bottom falls into the rotary frame, light gas from bottom to top blows open a small gas cap through a small vent hole, then the light gas makes contact with a heavy liquid, light substances and heavy substances in the rectification tower are mutually exchanged; and in addition, the light gas and the heavy liquid can be in full contact with each other through the rotating rotary frame, and the rectification effect is improved.

Description

technical field [0001] The invention belongs to the technical field of CO2 purification, and in particular relates to a rectification, separation and purification device for CO2 with high purification rate. Background technique [0002] At present, the pollution of carbon dioxide waste gas to the atmosphere is becoming more and more serious. The excessive and unlimited emission of carbon dioxide in various industrial processes will cause a terrible greenhouse effect in the atmosphere, which will have a catastrophic impact on the living environment of human beings. On the other hand, carbon dioxide is a very valuable carbon resource, which can be used in various fields such as chemical industry, machinery, food, agriculture, etc., and has a wide range of uses. Therefore, how to recover, purify and reuse carbon dioxide in various industrial waste gases has become a topic that people pay more and more attention to. [0003] At present, industrial production, especially thermal...

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high purification rate of CO rectification separation and purification device, which solves the problem of the doped gas in the existing carbon dioxide rectification and purification device in the process of carbon dioxide rectification and purification. Incomplete adsorption and purification affect the purity of carbon dioxide

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