METHOD OF SPLITTING BIOGAS Russian patent published in 2016 - IPC B01D53/62 

FIELD: biotechnology.

SUBSTANCE: invention relates to environmental biotechnology. Method of splitting biogas comprises treating biogas with monoethanolamine (MEA), which absorbs carbon dioxide (CO₂) gas, feeding obtained MEA solution for regeneration, from where CO₂ is desorbed by heating and reducing pressure and after cooling biological deodorisation of CO₂ is carried out by treating with active sludge, treatment of CO₂ with atomic oxygen with concentration of 0.5-2.5 mg/l is carried out in a first mass exchange apparatus, second mass exchange apparatus carries out treatment of CO₂ with atomic oxygen in concentration of 0.5-2.5 mg/l and atomic chlorine in concentration of 1-5 mg/l, and methane extracted from biogas is recycled. According to invention, in mass exchange apparatus before treating CO₂ with atomic oxygen with concentration of 0.5-2.5 mg/l, further biological deodorisation is carried out.

EFFECT: technical result is reduction of amount of used equipment while facilitating all operations required for obtaining sufficient degree of cleaning and deodorisation of carbon dioxide.

3 cl, 1 dwg