THOROUGH PURIFICATION OF GASEOUS COMBUSTION PRODUCTS, INCLUDING REMOVAL OF CO Russian patent published in 2010 - IPC B01D53/14 B01D53/62 

FIELD: chemistry.

SUBSTANCE: invention can be used in the chemical and oil refining industry. To achieve maximum condensation and gas purification effect, temperature of gaseous combustion products is lowered to 0-20°C in cooling devices of a direct contact 132. CO₂ is trapped from the cooled and pure gas from an air pipe in a CO₂ absorber 134 using ammoniated solution, or dredge in a NH₃-CO₂-H₂O system. Absorption takes place at 0-20°C. Regeneration of CO₂-concentrated solution is carried out in a regenerator 136 at high pressure and temperature. The regenerator 136 generates a stream 110 with high CO₂ pressure and low concentration of NH₃ and water vapour. The high pressure CO₂ stream is cooled and washed to extract ammonia and moisture.

EFFECT: simple method, reduced power consumption and possibility of using cheap reagent.

17 cl, 3 dwg