Alkylation process
AssigneePhillips Petroleum Company
InventorCharles C. Chapman
Life of this patent
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Abstract
The bottom effluent from an isostripper of an HF alkylation system is combined with the bottom effluent consisting essentially of isopentanes and heavier hydrocarbons from a debutanizer column such as to produce an alkylate product stream under the provision that the mixing of the two streams is achieved in response to a signal representing the vapor pressure of the mixed streams.
Claims2
In a process for producing an alkylate end product stream having a preselected vapor pressure comprising reacting an olefin stream and an isoparaffin stream to form a resultant alkylate product stream, separating said resultant alkylate product stream into an isoparaffin stream, an alkylate stream and a vapor stream comprising normal butane and isopentane,
- the improvement comprising separating said vapor stream comprising normal butane and isopentane into a normal butane stream and a resultant material stream comprising isopentane,
- controllably adding said resultant material stream comprising isopentane to said alkylate stream so as to form an alkylate end product stream,
- measuring the vapor pressure of said alkylate end product stream and generating a signal representative of this measurement, and
- controlling the addition of said resultant material stream comprising isopentane to said alkylate stream in response to said signal to produce an alkylate end product stream having a constant and preselected vapor pressure.
Dependencies are inferred from the claim text.