Influência da pressão e razão líquido/gás na absorção de CO2 contido no biogás usando coluna empacotada.

Abstract

Biogas, depending on the use has that to have its characteristics improved physicist- chemistries it is of great importance, such as: the removal of the carbon dioxide (CO2) and of the acid sulfuric (H2S). This work had as objective to develop a mechanism of removal of CO2 using physical methods of removal. The elaborated equipment was a column of absorption stuffed with 250 cm of height and 30 cm of diameter using pipes of PVC rigid of 20 mm of diameter as filling and water as solvent. Assays with pressures had been become fulfilled varying between 300 and 500 kPa and outflow of biogas between 190 and 670 cm3. Biogas possesses, originally, a 33% CO2 concentration. With the use of the absorption column it was obtained that this concentration reached 15% what more represented an increase of 57% in the calorific power for unit of mass.