Novel radial flow adsorption tower for pressure swing adsorption

Abstract

The invention provides a novel radial flow adsorption tower for pressure swing adsorption, and belongs to the technical field of adsorption tower. The novel radial flow adsorption tower comprises an upper seal head, a lower seal head, a tower cylinder body, an isolation drum and a center pipe, wherein the tower cylinder body, the isolation drum and the center pipe are distributed in a concentric circle way; an annular outer passage is formed between the outer drum wall of the isolation drum and the tower cylinder body, and an annular inner passage is formed between the inner drum wall of the isolation drum and the outer wall of the center pipe; a flow distributing pipe and an air exhaust pipe are arranged at the top part of the interior of the adsorption tower, the flow distributing pipe is used for communicating the center pipe and the annular outer passage, and the air exhaust pipe is connected and communicated with the annular inner passage; air flow hole passages are distributed on a drum body of the isolation drum, and an adsorbent is filled into the drum body. The novel radial flow adsorption tower has the advantages that the raw gas is guided into the annular outer passage by the center pipe passage via the flow distributing pipe, flown into the adsorbent layer in the radial way, and sent into the annular inner passage after adsorbing and separating; the gas flows outside the adsorption tower and in the inner passage to form the U-shaped flowing type, so that the change trends of static pressures in the inner passage and the outer passage are basically the same in the axial flowing direction of gas flow, and the uniform distribution of the gas flow is realized.

Description

technical field [0001] The invention belongs to the technical field of adsorption towers, in particular to an adsorption tower for pressure swing adsorption, in particular to a novel radial flow adsorption tower for pressure swing adsorption. Background technique [0002] Pressure swing adsorption technology uses the characteristic that the adsorption and desorption performance of the adsorbent on each component in the gas mixture shows obvious differences with the pressure change, selectively adsorbs different gas components in the mixed gas, and realizes the adsorption of different gases. The purpose of separation and purification of components. Considering the difference in adsorption and desorption pressures, it mainly includes Pressure Swing Adsorption (PSA for short), Vacuum Pressure Swing Adsorption (VPSA or VSA for short) and Temperature Swing Adsorption (TSA for short). For gas sources whose pressure is normal pressure or slightly higher than normal pressure, VPSA ...

AI Technical Summary

Problems solved by technology

However, the radial flow adsorption tower involves multi-layer cylindrical channels, and the uniformity of airflow distribution needs to be considered. The structure inside the tower is complicated, the processing is difficult and the load-bearing pressure is high, which has high construction costs.

Images