COMPARATIVE ANALYSIS OF THE EFFICIENCY OF WATER AND WATER-AMINE ABSORPTION PROCESSES FOR EXTRACTING CO2 FROM BIOGAS

The production of biomethane from biogas energy costsfor the most widely used amine and water processes for extracting carbon dioxide were analyzed using computer simulation. Combined water-amine absorption method purification CO2 wasincluded in comparative analysis.
 For content 32 to 42 %, specific costs when extract are, on average, ~ 2.5 times lower than absorption, but loss CH4 by was 7.1–7.6 % due its watersolubility with practically zero insignificant (0.17–2.8 %) technology.
 Using preliminary saved can compensate power consumption compressor or heatcosts saturated absorbent regenerating. This will allowto reduce almost equal absorptionone. results simulation extraction be optimize technological schemes — an analogueof natural gas. Bibl. 13, Fig. 5, Tab. 6.