METHOD OF PRODUCING AN ARTIFICIAL GAS MIXTURE FOR A POWER PLANT OPERATING IN A WASTE GAS RECIRCULATION MODE Russian patent published in 2019 - IPC F02G1/04 F02B47/10 F02D21/04 F01N3/08 

FIELD: power engineering.

SUBSTANCE: invention relates to anaerobic power engineering and can be used in air-independent power plants with heat engines and especially in ship power plants of underwater vehicles operating without atmospheric air access. Essence of the invention lies in the fact that cooling of the compressed and dried stream from 240 K to 220÷222 K is carried out by heat exchange with liquid CO₂, which is circulated under pressure equal to pressure of compressed stream, and flow rate from 9 to 12 times higher than gasified O₂ flow rate, while liquid CO₂ during heat exchange with dried flow of gas mixture is heated to 237÷238 K, after which cooling to 218÷220 K due to evaporation of liquid O₂ and heat exchange with gasified O₂, which is heated to temperature of 235÷236 K, and further, depending on the power plant mode optimum concentration of oxygen in the artificial gas mixture is maintained by controlling the flow rate of liquid O₂, wherein stability of cryogenic process mode is maintained by controlling circulation flow rate of liquid CO₂, flow rate and pressure of compressed flow.

EFFECT: high reliability and efficiency of producing an artificial gas mixture of cryogenic liquefaction cycle of CO₂ for air-independent power plants operating in a wide range of loads.

1 cl, 1 dwg