TH134809A - Hydrocarbon gas processing - Google Patents

Abstract

DC60 (19/03/2012) Process and equipment are disclosed for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from hydrocarbon gas streams. The gas flows are cooled and divided into first and second currents. The first stream was further cooled to condense all it literally. And after that is expanded to the pressure of the distillation tower separating the products according to their boiling point The product is supplied to the distillation tower by boiling point at the feed position higher than the center of the column. The second stream is expanded to the tower pressure and is supplied to the column at the center feed position. The distillation vapor column is drawn from the column above the feed point of the first. Is combined with the upper part of the tower Being pressed to a higher pressure And is introduced into the heat exchange with the upper steam of the rest of the tower to make A combined steam that has been compressed, cooled and condensed at least part of the vapor stream. Which creates a condensed current Process and equipment are disclosed for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from hydrocarbon gas streams. The gas flows are cooled and divided into first and second currents. The first stream was further cooled to condense all it literally. And after that is expanded to the pressure of the distillation tower separating the products according to their boiling point The product is supplied to the distillation tower by boiling point at the feed position higher than the center of the column. The second current is expanded to the tower pressure and is supplied to the column at the center of the column feed position. The vapor stream of the distillation is drawn from the column above the feed point of the first stream. Is combined with the upper part of the tower Being pressed to a higher pressure And is introduced into the heat exchange with the upper steam of the rest of the tower to make the flow The condensed vapor that is compressed, cooled and condensed at least part of the vapor stream. Which creates a condensed current

Claims (1)

1. In a process for separating gas streams containing methane, C2 components, C3 components and heavier hydrocarbon components into volatile residual gas and volatile residues. It is relatively less likely to contain the main C2 component, C3 component, and heavier hydrocarbon component. Or C3 component and heavier hydrocarbon component mentioned above. In which process (a) the aforementioned gas stream is cooled under pressure to tag: