# US 2008/0187467 A1 · Apparatus for long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound

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- Number: US 2008/0187467 A1
- Document ID: US20080187467A1
- Status: Published application
- Kind: A1
- Application number: 12/043,417
- Filed: 2008-03-06
- Published: 2008-08-07
- Earliest claimed: 2004-05-19
- Assignees: BASF SE
- Inventors: Martin DIETERLE; Gerhard Laqua; Klaus Joachim Muller-Engel
- Web page: https://patentgrep.com/patent/US20080187467A1

## CPC

- B01J 8/0285: {Heating or cooling the reactor (for tubular reactors in furnaces B01J8/062)}
- C07B 41/00: Formation or introduction of functional groups containing oxygen
- C07C 45/35: in propene or isobutene
- C07C 51/252: {of propene, butenes, acrolein or methacrolein}
- B01J 2208/00061: of the reactants
- B01J 2208/00539: Pressure
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C07B: GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR (preparation of carboxylic acid esters by telomerisation C07C67/47; telomerisation C08F)
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

Apparatus for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound over a catalyst bed, in which, in order to counteract the deactivation of the catalyst bed, the working pressure in the gas phase is increased during the operating time of the catalyst bed.

## Claims

### Claim at position 1

1-12. (canceled)

### Claim 13

An apparatus comprising at least one oxidation reactor and at least one apparatus, disposed downstream of the outlet of the at least one oxidation reactor, for controlling the working pressure in the at least one oxidation reactors wherein
the apparatus is for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound.

### Claim 14

An apparatus comprising at least one oxidation reactor, at least one column connected downstream of the oxidation reactor and having separating internals and an apparatus, connected downstream of the oxidation reactor, for controlling the working pressure in the at least one oxidation reactor, wherein
the apparatus is for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of at least one organic compound.

### Claim 15 (depends on 14)

The apparatus according to claim 14, wherein the oxidation reactor comprises a catalyst bed and an air compressor which is designed to maintain a working pressure range of from >0.5 to 4 bar at a given hourly space velocity on the catalyst bed disposed in the oxidation reactor of starting reaction gas mixture.

### Claim 16 (depends on 13, 14)

The apparatus according to claims 13 or 14, wherein the at least one oxidation reactor is a tube bundle reactor.

### Claim 17 (depends on 13, 14)

The apparatus according to claims 13 or 14, wherein the apparatus for controlling the working pressure is a perforated diaphragm.

### Claim 18

(canceled)

### Claim 19 (depends on 15)

The apparatus according to claim 15, wherein the given hourly space velocity of starting reaction gas mixture is ≧1500 l (STP)/l·h.

### Claim 20

(canceled)