Filtration tray for catalytic chemical reactor

Patent metadata

Field	Value
Publication number	US-2018001288-A1
Application number	US-201515540852-A
Country	US
Kind code	A1
Filing date	Dec 18, 2015
Priority date	Jan 5, 2015
Publication date	Jan 4, 2018
Grant date	—

Abstract

A particle separation system for a catalytic chemical reactor.

First claim

1 . A particle separation system for a catalytic chemical reactor, wherein the particle separation system comprises a plurality of filtration sections comprising overfill systems, thereby enabling particle capture while keeping the pressure drop over the separation system constant and limiting the liquid load across the 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.

2 . A particle separation system according to claim 1 , wherein a plurality of the basins are interconnected in series of upstream and downstream basins.

3 . A particle separation system according to claim 1 , wherein at least one of said basin walls comprises a filtering medium.

4 . A particle separation system according to claim 3 , wherein said filtering medium comprises a composite.

5 . A particle separation system according to claim 3 , wherein an upstream basin is enabled to let liquid permeate through the filtering medium either downstream the filtration tray or to a downstream basin until said filtering medium is plugged by accumulating particles.

6 . A particle separation system according to claim 3 , wherein the liquid level of an upstream basin rises when the filtering medium of said tray progressively plugs, thereby exposing downstream basins to the liquid stream, whereby the basin walls function as overfill gates.

7 . A particle separation system according to claim 6 , wherein an open passage downstream the overfill gate is adapted 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.

8 . 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.

9 . 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.

10 . A particle separation system according to claim 9 , wherein the screen type material comprises catalyst or inert material, or catalyst and inert material.

11 . A particle separation system according to claim 10 , wherein the screen type material is adapted to allow passage of liquid, while preventing the catalyst or inert material to pass through it.

12 . A particle separation system according to claim 9 , wherein the two screens face each other and are oriented perpendicular to a fluid flow.

13 . A particle separation system according to claim 9 , wherein the crates have at least one removable side for service.

14 . A particle separation system according to claim 13 , wherein the removable side is fastened by means of quick releases.

15 . Use of a particle separation system according to claim 1 for hydroprocessing.

Assignees

• Haldor Topsoe As

Inventors

• Zahirovic Emir
• Risbjerg Jarlkov Klaus
• Cenni Roberta

Classifications

• 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

• B01J2208/00707

  Fouling · CPC title

• B01D2201/30

  Filter housing constructions · CPC title