Separation recovery system and separation recovery method

Patent metadata

Field	Value
Publication number	US-11833455-B2
Application number	US-202218065418-A
Country	US
Kind code	B2
Filing date	Dec 13, 2022
Priority date	Dec 28, 2017
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

A separation recovery system for separating and recovering an object to be separated includes a metal porous membrane which has a first principal surface and a second principal surface facing the first principal surface and has a plurality of through-holes extending between the first principal surface and the second principal surface, a supply device which supplies a first fluid containing the object to be separated from the first principal surface of the metal porous membrane toward the second principal surface, and a backwash device which supplies a second fluid containing a plurality of particles larger than a size of the plurality of through-holes of the metal porous membrane in a direction from the second principal surface of the metal porous membrane toward the first principal surface.

First claim

The invention claimed is:

1. A separation recovery method, the method comprising:
supplying a first fluid containing an object to be separated in a first direction from a first principal surface of a metal porous membrane having a plurality of through-holes toward a second principal surface facing the first principal surface so that the first fluid passes through the plurality of through-holes from a side of the first principal surface and the object to be separated is captured on the first principal surface of the metal porous membrane;
after the object to be separated is captured on the first principal surface of the metal porous membrane, supplying a second fluid containing a plurality of particles larger than a size of the plurality of through-holes of the metal porous membrane to the metal porous membrane on which the object to be separated has been captured in a second direction from the second principal surface of the metal porous membrane toward the first principal surface so that the second fluid passes through the plurality of through-holes from a side of the second principal surface; and
capturing the plurality of particles on the second principal surface of the metal porous membrane.

2. The separation recovery method according to claim 1 , further comprising setting a pressure on the side of the second principal surface of the metal porous membrane higher than a pressure on the side of the first principal surface of the metal porous membrane when supplying the second fluid containing the plurality of particles in the second direction from the second principal surface of the metal porous membrane toward the first principal surface of the metal porous membrane.

3. The separation recovery method according to claim 1 , wherein the plurality of particles are smaller than a hole pitch of the plurality of through-holes of the metal porous membrane.

4. The separation recovery method according to claim 1 , wherein a number of the plurality of particles is greater than a number of the plurality of through-holes of the metal porous membrane.

5. The separation recovery method according to claim 1 , wherein a shape of each of the plurality of particles is spherical.

6. The separation recovery method according to claim 1 , wherein a shape of each of the plurality of through-holes of the metal porous membrane is circular when viewed from a thickness direction of the metal porous membrane.

7. The separation recovery method according to claim 1 , wherein a shape of each of the plurality of through-holes of the metal porous membrane is square when viewed from a thickness direction of the metal porous membrane.

8. The separation recovery method according to claim 1 , wherein a cross-sectional shape of each of the plurality of particles is different from a shape of the plurality of through-holes of the metal porous membrane.

9. The separation recovery method according to claim 1 , wherein the first fluid is supplied by a syringe.

10. The separation recovery method according to claim 1 , wherein the second fluid is supplied by a syringe.

Assignees

• Murata Manufacturing Co

Inventors

• Kamba Seiji
• Kondo Takashi
• Banju Masaru

Classifications

• B01D71/02231

  Palladium · CPC title

• B01D71/0213

  Silicon · CPC title

• B01D2325/021

  Pore shapes · CPC title

• B01D29/68 Primary

  with backwash arms, shoes or nozzles · CPC title

• B01D29/01

  with flat filtering elements (B01D29/39 takes precedence) · CPC title