摘要 |
<p>The column (1) has mass transfer element (6) that is provided for flowing gas (3) from bottom to top and for flowing liquid from top to bottom (4) of container (2). The concentration of predetermined constituent of gas inside container and/or in/on outlet (7a) of gas (7) is determined by sensor (14). A control valve (8) is connected with the outlet. The gas (7) is discharged through transfer units (12,13) of control valve, such that predefined fraction of total volume flow of gas (7) is flowed.</p> |