| 摘要 |
The product gas from a dehydrogenation reaction is treated by a downstream gas scrub followed by depressurization in a high-pressure flash vessel equipped with mass transfer elements, wherein a fuel gas flows upwardly through the mass transfer elements in the high-pressure flash vessel countercurrent to depressurized solvent so that absorbed hydrocarbons are taken up by the fuel gas. The fuel gas is the heating gas for heating the dehydrogenation reactor and is, for example, natural gas. To increase efficiency, the hydrocarbon stream which has been separated from the acidic gas can be recirculated to the process gas path upstream of the gas scrub. |
