# US 5,345,027 A · Alkylation process using co-current downflow reactor with a continuous hydrocarbon phase

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- Number: US 5,345,027 A
- Document ID: US5345027A
- Status: Granted
- Kind: A
- Application number: 07/933,163
- Filed: 1992-08-21
- Granted: 1994-09-06
- Earliest claimed: 1992-08-21
- Assignees: Mobile Oil Corporation
- Inventors: Jonathan E. Child; Kenneth J. Del Rossi; Albin Huss, Jr.; Frederick J. Krambeck; Thomas R. Melli; Sergei Yurchak
- Web page: https://patentgrep.com/patent/US5345027A

## CPC

- C07C 2/62: with acids
- B01J 27/12: Fluorides
- B01J 27/16: containing oxygen {, i.e. acids, anhydrides and their derivates with N, S, B or halogens without carriers or on carriers based on C, Si, Al or Zr; also salts of Si, Al and Zr}
- C07C 2527/1213: Boron fluoride
- C07C 2527/173: Phosphoric acid or other acids with the formula Hn+2PnO3n+1
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

A continuous alkylation process for the production of high octane gasoline comprising contacting a mixture of an isoparaffin and an olefin with a catalyst complex comprising BF3:H.sub.3 PO.sub.4 in a continuous hydrocarbon downflow reactor.

## Claims

### Claim 1

A continuous alkylation process for alkylating an isoparaffin with an olefin under alkylation conditions in a downflow reactor comprising uniformly dispersing downwardly a catalyst complex comprising BF.sub.3 :H.sub.3 PO.sub.4 into a continuous hydrocarbon phase comprising a mixture of said isoparaffin and said olefin.

### Claim 2 (depends on 1)

A process of claim 1 wherein the isoparaffin contains from 4 to 8 carbon atoms and the olefin contains from 2 to 12 carbon atoms.

### Claim 3 (depends on 1)

The process of claim 1 wherein the alkylation reaction temperature is from about 0.degree. F. to about 200.degree. F.

### Claim 4 (depends on 1)

The process of claim 1 wherein the alkylation reaction pressure is in the range of about 50 to about 500 psig.

### Claim 5 (depends on 1)

The process of claim 1 wherein the catalyst complex is uniformly dispersed from a nozzle distributor.

### Claim 6 (depends on 1)

The process of claim 1 wherein the acid is dispersed as droplets with diameters from about 0.01 cm to about 0.1 cm.

### Claim 7

A method of increasing catalytic activity and stability of a BF:H.sub.3 PO.sub.4 complex in an alkylation process under alkylation conditions comprising dispersing the complex downwardly in a continuous hydrocarbon co-current downflow reactor.

### Claim 8 (depends on 7)

The method of claim 7 wherein the alkylation process has a reaction temperature of about 0.degree. F. to about 200.degree. F.

### Claim 9 (depends on 8)

The method of claim 8 wherein the alkylation process has a pressure range of from about 50 to about 100 psig.

### Claim 10 (depends on 7)

The method of claim 7 wherein the ratio of BF.sub.3 :H.sub.3 PO.sub.4 to hydrocarbon is about 0.05:1 to about 0.8:1.

### Claim 11

A method of increasing the octane yield in an alkylation process under alkylation conditions using BF.sub.3 :H.sub.3 PO.sub.4 as a catalyst complex comprising:
dispersing the complex downwardly into a continuous hydrocarbon phase and,
maintaining the complex in a continuous co-current downstream hydrocarbon phase comprising isoparaffin and olefin.

### Claim 12 (depends on 11)

The method of claim 11 wherein the ratio of BF.sub.3 :H.sub.3 PO.sub.4 to the continuous hydrocarbon phase is from about 0.08:1 to about 0.5:1.

### Claim 13

A method of controlling catalyst acid viscosity in an isoparaffin/olefin alkylation process under alkylation conditions where BF.sub.3 :H.sub.3 PO.sub.4 is used as the acid catalyst complex said method comprising:
dispersing the complex downwardly into a continuous isoparaffin/olefin hydrocarbon phase and,
maintaining the catalyst complex dispersed substantially uniformly in the isoparaffin/olefin phase in a continuous co-current downflow reactor.