Novel PSA adsorption separation device

Abstract

The invention relates to a novel PSA adsorption separation device, which belongs to the field of adsorption separation and comprises two adsorption towers, the two adsorption towers are communicated through a pressure equalizing pipe, switch valves are arranged at two ends of the pressure equalizing pipe, a fixing pipe is arranged between the two switch valves, the fixing pipe and the pressure equalizing pipe are coaxial, and a fixing shaft coaxial with the fixing pipe is arranged in the fixing pipe. First bevel gears are rotationally installed at the two ends of the fixing shaft, compression impellers are fixedly installed on the opposite faces of the two first bevel gears, the fixing pipe is located between the two compression impellers, and the compression impellers are rotationally connected with the fixing pipe in a sealed mode. According to the invention, gas flow during pressure equalizing is utilized to convert kinetic energy into mechanical energy and store the mechanical energy, so that energy is supplied to desorption of an adsorbent in the later period; secondly, temperature swing adsorption is combined in the process, and impurity desorption is accelerated in a heating mode; by adopting an adsorption tower connection mode, the boosting time of the adsorption tower in a regeneration state can be shortened.

Description

technical field [0001] The invention belongs to the field of adsorption separation, in particular to a novel PSA adsorption separation device. Background technique [0002] Pressure swing adsorption, referred to as PSA, is a new gas adsorption separation technology, which utilizes the selective adsorption of adsorbents to gases to realize the separation of gas mixtures and the regeneration of adsorbents. The adsorption amount of the adsorbent to the adsorbate increases with the increase of the pressure, and decreases with the decrease of the pressure. At the same time, in the process of decompression, the adsorbed gas is released to regenerate the adsorbent without external heat supply. However, the traditional pressure swing adsorption takes a long time and consumes more energy for desorption, so there is still a lot of room for improvement. Contents of the invention [0003] The invention provides a novel PSA adsorption separation device to solve the defects in the prio...

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