Gas adsorption and separation apparatus and applications thereof

A gas adsorption and separation apparatus, comprising:

• an adsorption functional module and a further functional module, wherein
• a main functional portion of the adsorption functional module is an adsorption series composed of two or more adsorption units arranged in sequence,
• the adsorption series comprises a head end and a tail end,
• a gas to be separated passes through the adsorption series in a direction from the head end to the tail end,
• when reaching a preset degree of saturation adsorption of the adsorbate gas, the adsorption unit located at the head end is detached from the adsorption series and enters the further functional module comprising a desorption apparatus and sequentially re-enters the adsorption series from the tail end after a further process treatment including a desorption treatment is completed,
• each of the adsorption units is an adsorptive fixed bed composed of an adsorbent and a mechanical support structure,
• the adsorption unit which has completed saturated adsorption is referred to as a saturated adsorption unit, and the adsorption unit which has completed desorption and regeneration is referred to as a regenerated adsorption unit, and,
• wherein the adsorption-desorption mode used is temperature and pressure swing adsorption, the further functional module comprises a recirculating air heating apparatus and a vacuum desorption apparatus, and the conversion of the adsorption unit among the adsorption apparatus, the recirculating air heating apparatus and the vacuum desorption apparatus is implemented by means of a pipeline switching disc comprising a series of stop valves and a group of switching valves, and the adsorption unit that has completed saturated adsorption completes desorption by the dual actions of the recirculating air heating apparatus and the vacuum desorption apparatus.