| 摘要 |
PCT No. PCT/SU80/00163 Sec. 371 Date May 12, 1982 Sec. 102(e) Date May 12, 1982 PCT Filed Sep. 25, 1980 PCT Pub. No. WO82/01242 PCT Pub. Date Apr. 15, 1982.A process for producing nitrogen and oxygen from a precompressed and cooled air, comprising compression of air to a pressure of from 0.3 to 0.6 MPa, cooling the compressed air to a saturated state with a partial liquefaction at a temperature of from 90 DEG to 100 DEG K. The cooled air with a partial content of the liquid is supplied to separation into at least one vortex tube. An apparatus for carrying said process comprises a compressor (1) and heat-exchangers (2) positioned along the path of movement of the compressed air, which heat-exchangers have a high-pressure cavity and a low-pressure cavity, and a vortex tube (4) having, at one end thereof, an inlet nozzle (5) and a diaphragm (6) for discharging nitrogen and, at the other end thereof, a diffuser (7) for discharging oxygen. The inlet nozzle (5) of the vortex tube (4) is connected with the high-pressure cavity of the heat-exchanger (2), while the diaphragm (6) of the vortex pipe (4) is connected with the low-pressure cavity of the heat-exchanger (2). |
