Centrifugal separator device for primary processing of pressurized oil

Patent metadata

Field	Value
Publication number	US-10758920-B2
Application number	US-201615346960-A
Country	US
Kind code	B2
Filing date	Nov 9, 2016
Priority date	Nov 9, 2015
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

This invention is for a centrifugal separator comprised of a group formed by: a central feed chamber ( 10 ) fed by a feed pipe ( 20 ); a separation chamber ( 30 ) including a number of frustoconical disks ( 3 ); a first recovery chamber ( 11 ) in communication with a first liquid phase recovery pipe ( 21 ) and a gaseous phase recovery pipe ( 23 ); and a second recovery chamber ( 12 ) communicating with a second liquid phase recovery pipe ( 22 ), where the group is encompassed by a rotating envelope ( 1 ), where the central feed chamber ( 10 ) is in liquid fluid communication with the separation chamber ( 30 ), and in gaseous fluid communication with the first recovery chamber ( 11 ), where the separation chamber ( 30 ) is in fluid communication with the first and second recovery chambers where the centrifugal separator is encompassed by pressurizable stationary casing ( 4 a, 4 b ).

First claim

The invention claimed is:

1. A centrifugal separator system comprised of:
a centrifugal separator comprising:
a central feed chamber fed by a feed pipe;
a separation chamber comprising a number of frustoconical disks;
a first recovery chamber in communication with a first liquid phase recovery pipe and a gaseous phase recovery pipe, the gaseous phase recovery pipe being configured to receive a gas phase from the first recovery chamber; and
a second recovery chamber communicating with a second liquid phase recovery pipe,

wherein the central feed chamber, the separation chamber, the first recovery chamber, the first liquid phase recovery pipe, the gaseous phase recovery pipe, and the second recovery chamber are encompassed by a rotating envelope,
the central feed chamber is in liquid fluid communication with the separation chamber, and in gaseous fluid communication with the first recovery chamber,
the separation chamber is in fluid communication with the first and second recovery chambers,
the centrifugal separator system further comprises a pressurizable stationary envelope that encompasses the centrifugal separator, the pressurizable stationary envelope configured to be positively pressurized, and
the feed pipe, the gaseous phase recovery pipe, the first liquid phase recovery pipe, and the second liquid phase recovery pipe are concentric.

2. The centrifugal separator system in accordance with claim 1 , characterized by the pressurizable stationary envelope including at least one mechanical seal for communication of at least one of: the feed pipe; the gaseous phase recovery pipe; the first liquid phase recovery pipe; the second liquid phase recovery pipe; and a rotation drive shaft, with the outside.

3. The centrifugal separator system, in accordance with claim 1 , wherein the central feed chamber is configured to:
move the gas phase to the first recovery chamber; and
move a liquid phase and solid particulates to the separation chamber.

4. The centrifugal separator system, in accordance with claim 1 , characterized by the separation chamber configured to:
move a light liquid phase to the first recovery chamber; and
move a heavy liquid phase to the second recovery chamber.

5. The centrifugal separator system in accordance with claim 4 , characterized by the first liquid phase recovery pipe being configured to drain the light liquid phase, and the second liquid phase recovery pipe being configured to drain the heavy liquid phase.

6. The centrifugal separator system in accordance with claim 1 , characterized by the pressurizable stationary casing being a base and an upper portion, where the base and the upper portion are connected and sealed.

7. The centrifugal separator system in accordance with claim 3 , characterized by the central feed chamber being configured to move the gas phase from the central feed chamber to the first recovery chamber, without the gas phase passing through the separation chamber.

8. A method of operating a centrifugal separator system comprising a centrifugal separator and a pressurizable stationary envelope that encompasses the centrifugal separator, the method comprising:
performing separation with the separator while the pressurizable stationary envelope is positively pressurized,
wherein the centrifugal separator comprises:
a central feed chamber fed by a feed pipe;
a separation chamber comprising a number of frustoconical disks;
a first recovery chamber in communication with a first liquid phase recovery pipe and a gaseous phase recovery pipe, the gaseous phase recovery pipe being configured to receive a gas phase from the first recovery chamber; and
a second recovery chamber communicating with a second liquid phase recovery pipe,

wherein the central feed chamber, the separation chamber, the first recovery chamber, the first liquid phase recovery pipe, the gaseous phase recovery pipe, and the second recovery chamber are encompassed by a rotating envelope,
the central feed chamber is in liquid fluid communication with the separation chamber, and in gaseous fluid communication with the first recovery chamber,
the separation chamber is in fluid communication with the first and second recovery chambers, and
the feed pipe, the gaseous phase recovery pipe, the first liquid phase recovery pipe, and the second liquid phase recovery pipe are concentric.

9. The method in accordance with claim 8 , characterized by the pressurizable stationary envelope including at least one mechanical seal for communication of at least one of: the feed pipe; the gaseous phase recovery pipe; the first liquid phase recovery pipe; the second liquid phase recovery pipe; and a rotation drive shaft, with the outside.

10. The method in accordance with claim 8 , wherein the performing the separation comprises:
moving the gas phase to the first recovery chamber, via the central feed chamber; and
moving a liquid phase and solid particulates to the separation chamber, via the central feed chamber.

11. The method in accordance with claim 8 , wherein the performing the separation comprises:
moving a light liquid phase to the first recovery chamber, via the separation chamber; and
moving a heavy liquid phase to the second recovery chamber, via the separation chamber.

12. The method in accordance with claim 11 , wherein the performing the separation further comprises:
draining the light liquid phase via the first liquid phase recovery pipe, and
draining the heavy liquid phase via the second liquid phase recovery pipe.

13. The method in accordance with claim 8 , wherein the pressurizable stationary casing is a base and an upper portion, where the base and the upper portion are connected and sealed.

14. The method in accordance with claim 11 , wherein the moving the gas phase to the first recovery chamber comprises moving the gas phase from the central feed chamber to the first recovery chamber, without the gas phase passing through the separation chamber.

Assignees

• Petroleo Brasileiro Sa Petrobras
• Delp Engenharia Mecanica S/A

Inventors

• De Souza Marcos Aurélio
• DOS SANTOS PEREIRA Leonardo
• Martins Thiago Esteves

Classifications

• B04B11/04 Primary

  Periodical feeding or discharging; Control arrangements therefor · CPC title

• B04B5/00 Primary

  Other centrifuges · CPC title

• B01D17/0217

  by centrifugal force · CPC title

• B04B1/08

  of conical shape · CPC title

• B04B11/06 Primary

  Arrangement of distributors or collectors in centrifuges · CPC title