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US 12,624,294 B2Granted
Process and plant for improving oxygenate to gasoline conversion
AssigneeTopsoe A/S
InventorsArne Knudsen, Kumar Rabi
Life of this patent
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Abstract
Process and plant for producing a gasoline product from an oxygenate feed stream, the process including the provision of a methanol-to-gasoline reactor in a gasoline synthesis loop. The process and plant may include combination of an overhead stream from a de-ethanizer, e.g. a fractionation column, located downstream the cooling and separation of the raw gasoline produced in the methanol-to-gasoline reactor, in the gasoline synthesis loop.
Claims6
Plant for producing a gasoline product from an oxygenate feed stream comprising:
- an oxygenate-to-gasoline reactor comprising a catalyst for converting the oxygenate feed stream into a first raw gasoline stream;
- the reactor being arranged to receive the oxygenate feed stream and comprising an outlet for withdrawing the first raw gasoline stream;
- a mixing point arranged downstream a feed/effluent heat exchanger or downstream one or more heat exchangers, said mixing point being arranged to receive the first raw gasoline stream or cooled first raw gasoline stream or further cooled first raw gasoline stream, and an overhead gas stream comprising C2 compounds from a de-ethanizer arranged downstream, for forming a combined first raw gasoline stream as a second raw gasoline stream;
- a cooling unit arranged to receive the combined first raw gasoline stream as a second raw gasoline stream, for cooling said second raw gasoline stream;
- a gasoline synthesis product separator arranged to receive the thus cooled second raw gasoline stream or the second raw gasoline stream, and comprising an outlet for withdrawing a bottom water stream, an outlet for withdrawing an overhead recycle stream, and an outlet for withdrawing a third raw gasoline stream comprising C2 compounds, C3-C4 paraffins and C5+ hydrocarbons;
- a recycle compressor arranged to receive said overhead recycle stream and discharge a compressed overhead recycle stream;
- a de-ethanizer arranged downstream said gasoline synthesis product separator and further arranged to receive said third raw gasoline stream comprising C2 compounds, C3-C4 paraffins and C5+ hydrocarbons;
- the de-ethanizer comprising an outlet for withdrawing a bottom gasoline stream as said gasoline product, and an outlet for withdrawing the overhead gas stream comprising C2 compounds;
- and wherein the de-ethanizer is configured to operate at a higher pressure than the oxygenate-to-gasoline reactor.
6 more elements
Dependencies are inferred from the claim text.