EP0202000A1
Expired / Lapsed
EP
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Aromatisation of paraffins
Assignee: BP PLC
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Filing: 1986-03-21
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Granted: —
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Expires: 2006-03-21
Abstract
Abstract This invention relates to a process for converting a C<sub>2</sub>-C<sub>6</sub> paraffin feedstock to aromatics over a gallium loaded xeolite catalyst. The feature of the invention is to bring the ethane in the feed with a fresh or freshly regenerated catalyst first and thereafter to bring the residual catalyst from this step into contact with the remainder of the C<sub>3</sub>-C<sub>6</sub> feedstock. The present process has the advantage of maximising the yields of aromatics from a mixed feedstock using a single reactor and a single charge of catalyst.
Inventors
- 👤 Ian Cameron Bennett
- 👤 Antony Harold Patrick Hall
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 11:38
CPC Classifications
C; C07; C07C; C07C2/00; C07C2529/00; C07C2529/04; C07C2529/06; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A process for the conversion of C 2 -C 6 paraffinic hydrocarbons to aromatic hydrocarbons over a gallium loaded zeolite at elevated temperature characterised in that the process comprises the steps of: (a) bringing a feedstock comprising predominantly ethane into contact with a freshly prepared or regenerated gallium loaded zeolite catalyst at a temperature from 550° to 650°C over a period from 10 to 50 hours; (b) bringing a paraffinic feedstock comprising predominantly C 3 -C 6 hydrocarbons into contact with the residual catalyst from step (a) after contact with ethane at a temperature from 470 to 580°C over a period from 40 to 200 hours; (c) regenerating the residual catalyst from step (b) after contact with the C 3 -C 6 hydrocarbon; and (d) recycling the regenerated catalyst from step (c) to step (a).
Claim 2
Dependent Claim
135 words
A process for the conversion of C 2 -C 6 paraffinic hydrocarbons to aromatic hydrocarbons over a gallium loaded zeolite at elevated temperature characterised in that the process comprises the steps of: (a) bringing a feedstock comprising predominantly ethane into contact with a freshly prepared or regenerated gallium loaded zeolite catalyst at a temperature from 550° to 650°C over a period from 10 to 50 hours; (b) bringing a paraffinic feedstock comprising predominantly C 3 -C 6 hydrocarbons into contact with the residual catalyst from step (a) after contact with ethane at a temperature from 470 to 580°C over a period from 40 to 200 hours; (c) regenerating the residual catalyst from step (b) after contact with the C 3 -C 6 hydrocarbon; and (d) recycling the regenerated catalyst from step (c) to step (a).
Claim 3
Dependent Claim
22 words
A process according to claim 1 wherein the C 3 -C 6 paraffin hydrocarbon in step (b) is propane or a butane.
Claim 4
Dependent Claim
37 words
A process according to claim 1 or 2 wherein the steps (a) and (b) are carried out at a pressure in the range of 1-20 bar absolute using a weight hourly space velocity of 0.3 to 8.
Claim 5
Dependent Claim
22 words
A process according to any one of the preceding claims wherein the gallium loaded zeolite contains from 0.1-10% by weight of gallium.
Claim 6
Dependent Claim
23 words
A process according to any one of the preceding claims wherein the sequential reaction is carried out in a pressure swing reactor system.
References Cited (Backward Citations)
GB2082157A
Cited
EP0050021A1
Cited
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