Process and apparatus for removing oxygenates from liquefied petroleum gas
AssigneeUop LLC
InventorsJeffrey Tyska, Benjamin Moore, David A. Wegerer, Susmitha Chakkingal, David Alejandro Roman Barreno, Javier Rios, William J. Whyman, Phuong T. M. Do
Life of this patent
Estimating the term…
Abstract
A process and apparatus for removing oxygenates from a petroleum stream of C3 and/or C4 hydrocarbons comprises water washing the petroleum stream to absorb oxygenates to provide a hydrocarbon stream lean in oxygenates and a water stream rich in oxygenates. The water stream is stripped to remove oxygenates into an oxygenate concentrated stream and an oxygenate-lean water stream. The lean water stream can be recycled to the water wash column.
Claims21
A process for removing oxygenates from a petroleum stream of C3 and/or C4 hydrocarbons comprising:
- absorbing oxygenates from the petroleum stream into a water stream to produce a wash overhead stream rich in hydrocarbons and a wash bottoms stream rich in oxygenates;
- and
- stripping said wash bottoms stream to produce a stripper overhead stream concentrated in oxygenates and a stripped water stream lean in oxygenates.
An apparatus for removing oxygenates from a petroleum stream comprising;
- a water wash column in communication with a petroleum stream and a water stream;
- an oxygenate stripper column in downstream communication with a bottoms line from said water wash column;
- and
- an acid gas removal column in downstream communication with an overhead line from said water wash column.
A process for removing oxygenates from a petroleum stream of C3 and/or C4 hydrocarbons comprising:
- absorbing oxygenates from the petroleum stream into a water stream to produce a wash overhead stream rich in hydrocarbons and a wash bottoms stream rich in oxygenates;
- stripping said wash bottoms stream to produce a stripper overhead stream concentrated in oxygenates and a stripped bottoms stream lean in oxygenates;
- and
- recycling said stripped bottoms stream to said absorbing step as said water stream.
Dependencies are inferred from the claim text.