FIELD: metallurgy. SUBSTANCE: initial flow is preliminary cooled down to 280 K, mixed with a flow cooled down below 175 K temperature, and fed to filtration to separate condensed impurities, then cleared up flow is compressed and subdivided into three parts. One part is cooled down to 105 K and fed to mixing with the initial flow. The second part of 230 K temperature is directed to cool spray water. The third part is removed from the process. The device has horizontal flue 1, fit for contact heat exchanger 2, basic settling basin 3 connected through water circulating cooling loop and water clean up system 4 to heat exchanger 2, channels 5 for reverse flow positioned before filter/settler 6. Basic settling basin outlet is connected to intertube space 8 of surface heat exchanger, to heat exchanger 2, and through valve 9 to atmosphere. In so doing tube space 10 of the surface heat exchanger, where cryogenic agent intake device 11 is located, is connected to gas-expansion machine 12, positioned on one shaft with electric generator 13, compressor 14 and cryogenic pump 15, and cryogenic pump 15 outlet. Cryogenic pump inlet is connected to liquid cryogenic agent (for example, air) reservoir 16 through intermediate tank 17. In so doing reservoir 16, tank 17, cryogenic pump 15 and gas-expansion machine 12 are located inside cryostat 18 to generate refrigerating machine, and the compressor inlet is connected to internal cavity of the cryostat 18 and to intake device 11. Its output is connected to inlet of gas-expansion machine 12. EFFECT: cleaning up and utilization of high temperature gas effluents. 2 cl, 1 dwg
