The invention relates to the technical field of industrial
tail gas treatment, and provides a
carbon dioxide separation and capture
system which comprises a vortex tube
assembly at least comprising a first vortex tube and a second vortex tube, an inlet of the first vortex tube is used for introducing gas, and a cold end outlet of the first vortex tube is connected with an inlet of the second vortex tube; a cold end outlet of the second vortex tube is sequentially connected with a condenser and a gas-liquid separation device through a pipeline; the gas-liquid separation device is provided with a gas outlet and a liquid outlet; the
heat exchanger is provided with a cold fluid inlet and a hot fluid inlet, the cold fluid inlet is connected with the liquid outlet through a pipeline, the hot fluid inlet is simultaneously connected with a hot end outlet of the first vortex tube and a hot end outlet of the second vortex tube through pipelines, and the
heat exchanger is further provided with a cold fluid outlet; the
storage tank is connected with a cold fluid outlet of the
heat exchanger and used for storing
liquid carbon dioxide; the cold energy is fully utilized while the
carbon dioxide storage difficulty is reduced, and the overall energy utilization efficiency of the
system is improved.