ENERGY-SAVING PROCESS SYSTEM FOR PURIFYING AND RECYCLING OXYGEN FROM HIGH-TEMPERATURE OXYGEN-ENRICHED FLUE GAS AND PROCESS THEREOF

The disclosure discloses an energy-saving system for purifying and recycling oxygen from high-temperature oxygen-enriched flue gas, including a water washing mechanism for introducing high-temperature oxygen-enriched flue gas, a compressor set connected with the water washing system through a pipeline, a compressor outlet heat exchanger connected with the compressor set through a pipeline, a gas-liquid separation tank connected with the compressor outlet heat exchanger through a pipeline, a temperature swing adsorption isobaric drying mechanism and a pressure swing adsorption purification mechanism connected with the gas-liquid separation tank through pipelines, a dedusting and filtering mechanism for introducing gas treated by the temperature swing adsorption isobaric drying mechanism and the pressure swing adsorption purification mechanism, and a cooling mechanism for cooling the water washing mechanism and the compressor outlet heat exchanger. The disclosure has a low recycling cost, the oxygen-enriched flue gas is equally divided into two streams, one stream is subjected to temperature swing adsorption drying, and the other stream is subjected to pressure swing adsorption purification, and high-purity oxygen can be obtained by mixing the two product gases, thus effectively reducing the recycling cost