Aromatics and/or heavies removal from a methane-rich feed gas by condensation and stripping
First Claim
1. A apparatus comprising:
- (a) a condenser;
(b) a column;
(c) a heat exchanger providing for indirect heat exchange between two fluids;
(d) a conduit between said condenser and the upper section of the column for flow of a two-phase stream to the column;
(e) a conduit connected to the upper section of the column for the removal of a vapor stream from the column;
(f) a conduit between said column and heat exchanger for flow of a cooled gas stream from the heat exchanger;
(g) a conduit between said column and said heat exchanger for flow of a liquid stream from the column;
(h) a conduit connected to the heat exchanger for flow of a warmed liquid stream from the heat exchanger; and
(i) a conduit connected to the heat exchanger for flow of a gas stream to the heat exchanger.
1 Assignment
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Accused Products
Abstract
A process and associated apparatus for removing aromatics and/or higher molecular weight hydrocarbons from a methane-based gas stream comprising the steps of (a) condensing a minor portion of the methane-based gas stream thereby producing a two-phase stream, (b) feeding said two phase stream to the upper section of a column, (c) removing from the upper section of the column an aromatic- and/or heavies-depleted gas stream, (d) removing from the lower section of the column an aromatic- and/or heavies-rich liquid stream, (e) contacting via indirect heat exchange the aromatic- and/or heavies-rich liquid stream with a methane-rich stripping gas thereby producing a warmed liquid stream and a cooled stripping gas stream, (f) feeding said cooled stripping gas stream to the lower section of the column; and (g) contacting said two-phase stream and the cooled stripping gas stream in the column thereby producing the aromatic- and/or heavies-depleted gas stream and the aromatic- and/or heavies-rich liquid stream.
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Citations
12 Claims
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1. A apparatus comprising:
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(a) a condenser; (b) a column; (c) a heat exchanger providing for indirect heat exchange between two fluids; (d) a conduit between said condenser and the upper section of the column for flow of a two-phase stream to the column; (e) a conduit connected to the upper section of the column for the removal of a vapor stream from the column; (f) a conduit between said column and heat exchanger for flow of a cooled gas stream from the heat exchanger; (g) a conduit between said column and said heat exchanger for flow of a liquid stream from the column; (h) a conduit connected to the heat exchanger for flow of a warmed liquid stream from the heat exchanger; and (i) a conduit connected to the heat exchanger for flow of a gas stream to the heat exchanger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification