Filtration tray for catalytic chemical reactor

Patent metadata

Field	Value
Publication number	US-10471406-B2
Application number	US-201515540852-A
Country	US
Kind code	B2
Filing date	Dec 18, 2015
Priority date	Jan 5, 2015
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A particle separation system for a catalytic chemical reactor.

First claim

The invention claimed is:

1. A particle separation system for a catalytic chemical reactor, wherein the particle separation system comprises a plurality of filtration sections comprising overfill systems configured to enable particle capture while keeping a pressure drop over the particle separation system constant and limiting a liquid load across the particle separation system, wherein the particle separation system comprises at least one filtration tray comprising a number of basins with basin walls for collection of liquid, thereby combining sedimentation and filtration, wherein at least one of the basin walls comprises a filter medium, and wherein a plurality of the basins are interconnected in a series of upstream and downstream basins, such that an upstream basin is configured to enable liquid to permeate through the filtering medium to a downstream filtration tray or to a downstream basin until said filtering medium is plugged by accumulating particles;
wherein a liquid level of an upstream basin rises when the filtering medium progressively plugs, thereby exposing downstream basins to the liquid stream as the basin walls comprising the filter medium function as overfill gates, and
wherein an open passage downstream the overfill gate is configured to have a pressure drop which is higher than the sum of the pressure drops of all serially interconnected basins with unplugged filtering medium in a filtration tray.

2. A particle separation system according to claim 1 , wherein said filtering medium comprises a composite.

3. A particle separation system according to claim 1 , further comprising at least one initial sedimentation basin upstream the trays for large and heavy scale particles.

4. A particle separation system according to claim 1 , wherein the trays are constructed as crates comprising at least two walls made of a screen type material.

5. A particle separation system according to claim 4 , wherein the screen type material comprises catalyst or inert material, or catalyst and inert material.

6. A particle separation system according to claim 5 , wherein the screen type material is adapted to allow passage of liquid, while preventing the catalyst or inert material to pass through it.

7. A particle separation system according to claim 4 , wherein the two screens face each other and are oriented perpendicular to a fluid flow.

8. A particle separation system according to claim 4 , wherein the crates have at least one removable side for service.

9. A particle separation system according to claim 8 , wherein the removable side is fastened by means of quick releases.

10. A particle separation system according to claim 1 , wherein the particle separation system is configured to allow a gas to flow from an entry point to downstream the plurality of the basins unhindered by the filter medium in the at least one basin walls.

11. A particle separation system according to claim 1 , wherein the particle separation system is configured to separate substantially all gas from a feed mixture.

Assignees

• Haldor Topsoe As

Inventors

• Zahirovic Emir
• Risbjerg Jarlkov Klaus
• Cenni Roberta

Classifications

• B01J2208/00707

  Fouling · CPC title

• B01J8/00

  Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes · CPC title

• B01J8/0492 Primary

  Feeding reactive fluids (for solid material, see B01J8/0015) · CPC title

• B01J2219/00247

  Fouling of the reactor or the process equipment · CPC title

• C10G31/09

  by filtration · CPC title