Catalytic Reformer Recycle Gas Compressor Efficiency

a recycle gas compressor and catalytic reforming technology, which is applied in the direction of combustible gas chemical modification, combustible gas purification/modification, carburetor gases, etc., can solve the problems of increasing the difficulty of recycling gas compression, reducing the pressure of the reactor, and increasing the cost of replacing the recycle gas compressor. , to achieve the effect of improving the efficiency of catalytic reforming hydrogen production and increasing the flow of hydrogen

Inactive Publication Date: 2009-12-31
UOP LLC
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  • Abstract
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Benefits of technology

[0007]This invention is directed to methods for improving catalytic reforming hydrogen production using an existing recycle gas compressor by recycling a light gas stream from a unit operation associated with the catalytic reforming unit to either the recycle gas compressor inlet or outlet.
[0008]One aspect of this invention are methods for increasing hydrogen flow through a recycle gas compressor associated with a catalytic reforming process comprising the steps of: operating the recycle gas compressor having an inlet and an outlet in a catalytic reforming process including at least one catalytic reforming reactor to inc

Problems solved by technology

Thus, reducing reactor pressure increases the pressure rise across the catalytic reforming recycle compressor and it makes the recycle gas more difficult to compress because of its lower average molecular weight.
In some cases, reducing the reactor pressure is not feasible because the existin

Method used

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  • Catalytic Reformer Recycle Gas Compressor Efficiency
  • Catalytic Reformer Recycle Gas Compressor Efficiency

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Embodiment Construction

[0010]The present invention relates to methods for reducing the head requirement of a recycle gas compressor associated with a catalytic reforming process. In particular, the methods of this invention improve the head developed by the recycle gas compressors operating at higher pressure differentials and / or with is higher purity hydrogen make than the compressors were originally designed for.

[0011]Catalytic reforming is a preferred process for reforming naphtha to produce aromatics for petrochemical complexes, high octane gasoline, and hydrogen. A typical catalytic reforming unit may have three or more fixed catalyst bed reactors. Some catalytic reforming units have an extra “swing” reactor so that each reactor can be individually isolated so that any one reactor can be undergoing in situ regeneration while the other reactors are in operation. Still other catalytic reforming units have moving catalyst bed reactors. Such units are characterized by continuous in-situ regeneration of p...

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Abstract

Methods for improving the efficiency of a catalytic reforming recycle gas compressor by combining a high molecular weight light hydrocarbon process stream from a unit operation associated with the catalytic reforming process with a lower molecular weight reactor off gas recycle stream to form a combined recycle gas stream.

Description

BACKGROUND OF THE INVENTION[0001](1) Field of the Invention[0002]This invention concerns methods for improving the efficiency of a catalytic reforming recycle gas compressor by recycling a light hydrocarbon process stream from a unit operation associated with the catalytic reforming process into the recycle gas stream.[0003](2) Description of the Art[0004]There is an increasing demand for clean fuels. This demand has led to a desire to increase the amount of hydrogen produced in catalytic reforming processes. One way to increase catalytic reforming hydrogen production is to lower to pressure of the catalytic reforming reactor(s). One consequence of increasing hydrogen produced in a catalytic reformer is an increase in the amount of hydrogen (hydrogen purity) in the recycle gas stream which translates into a reduction in the average molecular weight of the recycle gas stream. Thus, reducing reactor pressure increases the pressure rise across the catalytic reforming recycle compressor...

Claims

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Application Information

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IPC IPC(8): C10J1/20
CPCC01B3/38C01B2203/0227C01B2203/148C01B2203/066C01B2203/1247C01B2203/065
Inventor FECTEAU, DAVID J.YUAN, LEONSCHLUETER, WILLIAM D.
Owner UOP LLC
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