Process for separation of hydrocarbon mixtures
Patent
·
OSTI ID:5761356
A process for separating hydrocarbons in a first fractionation zone having a bottoms reboiler and a second fractionation zone having a bottoms reboiler is described, which comprises: (a) introducing a hydrocarbon mixture to at least a first upper feed point of the first fractionation zone and recovering therefrom a first overhead vapor stream and a first bottoms liquid stream; (b) introducing the first bottoms liquid stream to an intermediate feedpoint of the second fractionation zone; (c) reboiling a hydrocarbon liquid sidestream removed from an intermediate liquid side draw point of the first fractionation zone and reinjecting the resulting reboiled hydrocarbon sidestream into the first fractionation zone at a point below the intermediate liquid side draw point; (d) removing a hydrocarbon vapor sidestream from below the intermediate liquid side draw point of the first fractionation zone; (e) introducing the hydrocarbon vapor sidestream to an upper feed point of the second fractionation zone; and (f) recovering a second overhead vapor stream and a second bottoms liquid stream from the second fractionation zone.
- Assignee:
- M.W. Kellogg Co., Houston, TX
- Patent Number(s):
- US 4702819
- OSTI ID:
- 5761356
- Country of Publication:
- United States
- Language:
- English
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