US 12,458,907 B2Granted

Concept for collection and distribution channels for a simulated moving bed separation process using N-columns in series

AssigneeIfp Energies Nouvelles

InventorsFrederic Augier, Aude Royon-Lebeaud, Damien Leinekugel Le Cocq, Alexandre Vonner

Life of this patent

Estimating the term…

Abstract

The present invention describes a device for supplying or collecting from a column forming part of an assembly of columns in series, for use in a simulated moving bed separation process. The present device can be used to very substantially reduce the non-selective volumes in each column.

Claims11

Dependent claims

A device for the distribution or collection of a fluid in a bed of granular solid (6) contained in a column for carrying out a separation into a plurality of components, wherein the bed of granular solid (6) has a bottom and the column has a bottom and a top and a center in each horizontal plane between the bottom and the top of the column, in which:

incoming fluid is distributed by a distribution channel (3) with a variable section in which the fluid flows at a constant velocity Vchannel of between 0.1 and 5 m/s, wherein the distribution channel (3) does not contain a porous material and wherein the constant velocity Vchannel is ensured by the shape of the distribution channel (3) not containing a porous material,
outgoing fluid is collected by a collection channel (8) with a variable section in which the fluid flows at the constant velocity Vchannel;
and
(A)
the distribution channel (3) is delimited by a first screen (5) on top of the bed of granular solid (6) and a wall (4) at a distance hsup (r) above said first screen (5), which hsup (r) has a profile along a radial coordinate r, which r from the center of the column in a horizontal plane is a distance along R, which R is the radius of the column, defined by the following formula:
h
sup
(
r
)
=
1
2
⁢
V
SL
V
channel
⁢
R
2
-
r
2
r
the collection channel (8) is delimited by a second screen (7) at the bottom of the bed of granular solid (6) and a wall (9) at a distance hinf (r) below said second screen, which hinf (r) has a profile along the radial coordinate r, defined by the following formula:
h
inf
(
r
)
=
h
sup
(
r
)
⁢
r
2
R
2
-
r
2
in which VSL is the superficial velocity of fluid in the bed of granular solid (6), defined as a ratio of volume flow rate to a cross sectional area;
or
(B)
the distribution channel (3) is delimited by a first screen (5) in a shape of a tube centered in the column present vertically through the bed of granular solid (6), which bed of granular solid (6) surrounds said tube, and a wall (4) inside said tube, wherein the wall (4) has a radial profile taken from the axis of the column rdistrib(z) along an axial coordinate z, which z is taken from the inlet for the fluid into the column, defined by the following formula:
r
distrib
(
z
)
=
r
distrib
(
0
)
-
2
⁢
V
SL
V
channel
⁢
r
distrib
(
0
)
⁢
(
H
bed
-
z
)
the collection channel (8) is delimited by a second screen (7) in the shape of a tube centered in the column present vertically surrounding the bed of granular solid (6) and a wall (9) having a radial profile rcollect(z) along the axial coordinate z, defined by the following formula:
r
collect
(
z
)
=
(
r
distrib
(
0
)
+
E
bed
)
2
+
z
H
bed
-
z
⁢
(
r
distrib
(
0
)
2
-
r
distrib
(
z
)
2
)
in which VSL is the superficial velocity of fluid in the bed of granular solid (6) defined as a ratio of volume flow rate to a cross sectional area, Hbed is the total height of the column, and Ebed is the thickness of the bed along the radial direction.

118 more elements

incoming fluid is distributed by a distribution channel (3) with a variable section in which the fluid flows at a constant velocity Vchannel of between 0.1 and 5 m/s, wherein the distribution channel (3) is defined by a void space and wherein the constant velocity Vchannel is ensured by the shape of the distribution channel (3) being a void space,
outgoing fluid is collected by a collection channel (8) with a variable section in which the fluid flows at the constant velocity Vchannel;
and
(A)
the distribution channel (3) is delimited by a first screen (5) on top of the bed of granular solid (6) and a wall (4) at a distance hsup (r) above said first screen (5), which hsup (r) has a profile along a radial coordinate r, which r from the center of the column in a horizontal plane is a distance along R, which R is the radius of the column, defined by the following formula:
h
sup
(
r
)
=
1
2
⁢
V
SL
V
channel
⁢
R
2
-
r
2
r
the collection channel (8) is delimited by a second screen (7) at the bottom of the bed of granular solid (6) and a wall (9) at a distance hinf (r) below said second screen, which hinf (r) has a profile along the radial coordinate r, defined by the following formula:
h
inf
(
r
)
=
h
sup
(
r
)
⁢
r
2
R
2
-
r
2
in which VSL is the superficial velocity of fluid in the bed of granular solid (6), defined as a ratio of volume flow rate to a cross sectional area;
or
(B)
the distribution channel (3) is delimited by a first screen (5) in a shape of a tube centered in the column present vertically through the bed of granular solid (6), which bed of granular solid (6) surrounds said tube, and a wall (4) inside said tube, wherein the wall (4) has a radial profile taken from the axis of the column rdistrib(z) along an axial coordinate z, which z is taken from the inlet for the fluid into the column, defined by the following formula:
r
distrib
(
z
)
=
r
distrib
(
0
)
-
2
⁢
V
SL
V
channel
⁢
r
distrib
(
0
)
⁢
(
H
bed
-
z
)
the collection channel (8) is delimited by a second screen (7) in the shape of a tube centered in the column present vertically surrounding the bed of granular solid (6) and a wall (9) having a radial profile rcollect(z) along the axial coordinate z, defined by the following formula:
r
collect
(
z
)
=
(
r
distrib
(
0
)
+
E
bed
)
2
+
z
H
bed
-
z
⁢
(
r
distrib
(
0
)
2
-
r
distrib
(
z
)
2
)
in which VSL is the superficial velocity of fluid in the bed of granular solid (6) defined as a ratio of volume flow rate to a cross sectional area, Hbed is the total height of the column, and Ebed is the thickness of the bed along the radius R.

118 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/951,671Filed 12 Apr 2018
Priority: FR 17/53.21612 Apr 2017
Published: US 2018/0296941 A118 Oct 2018
Granted: 4 Nov 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B01D 15/185
Simulated moving beds: characterised by the components to be separated
B01D 15/1842
Simulated moving beds: characterised by apparatus features
B01D 15/22
Characterised by constructional or operational features: relating to the construction of the column
C07C 7/12
Purification; Separation; Use of additives: by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with…

Family

US 2018/0296941 A1Pre-grant publication · published 18 Oct 2018
US 12,458,907 B2This patent

From the US filing history. Foreign family members aren’t listed.

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Abstract

incoming fluid is distributed by a distribution channel (3) with a variable section in which the fluid flows at a constant velocity Vchannel of between 0.1 and 5 m/s, wherein the distribution channel (3) does not contain a porous material and wherein the constant velocity Vchannel is ensured by the shape of the distribution channel (3) not containing a porous material,
outgoing fluid is collected by a collection channel (8) with a variable section in which the fluid flows at the constant velocity Vchannel;
and
(A)
the distribution channel (3) is delimited by a first screen (5) on top of the bed of granular solid (6) and a wall (4) at a distance hsup (r) above said first screen (5), which hsup (r) has a profile along a radial coordinate r, which r from the center of the column in a horizontal plane is a distance along R, which R is the radius of the column, defined by the following formula:
h
sup
(
r
)
=
1
2
⁢
V
SL
V
channel
⁢
R
2
-
r
2
r
the collection channel (8) is delimited by a second screen (7) at the bottom of the bed of granular solid (6) and a wall (9) at a distance hinf (r) below said second screen, which hinf (r) has a profile along the radial coordinate r, defined by the following formula:
h
inf
(
r
)
=
h
sup
(
r
)
⁢
r
2
R
2
-
r
2
in which VSL is the superficial velocity of fluid in the bed of granular solid (6), defined as a ratio of volume flow rate to a cross sectional area;
or
(B)
the distribution channel (3) is delimited by a first screen (5) in a shape of a tube centered in the column present vertically through the bed of granular solid (6), which bed of granular solid (6) surrounds said tube, and a wall (4) inside said tube, wherein the wall (4) has a radial profile taken from the axis of the column rdistrib(z) along an axial coordinate z, which z is taken from the inlet for the fluid into the column, defined by the following formula:
r
distrib
(
z
)
=
r
distrib
(
0
)
-
2
⁢
V
SL
V
channel
⁢
r
distrib
(
0
)
⁢
(
H
bed
-
z
)
the collection channel (8) is delimited by a second screen (7) in the shape of a tube centered in the column present vertically surrounding the bed of granular solid (6) and a wall (9) having a radial profile rcollect(z) along the axial coordinate z, defined by the following formula:
r
collect
(
z
)
=
(
r
distrib
(
0
)
+
E
bed
)
2
+
z
H
bed
-
z
⁢
(
r
distrib
(
0
)
2
-
r
distrib
(
z
)
2
)
in which VSL is the superficial velocity of fluid in the bed of granular solid (6) defined as a ratio of volume flow rate to a cross sectional area, Hbed is the total height of the column, and Ebed is the thickness of the bed along the radial direction.

118 more elements

Facts

Application

15/951,671Filed 12 Apr 2018

Priority

FR 17/53.21612 Apr 2017

Published

US 2018/0296941 A118 Oct 2018

Granted

4 Nov 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

B01D 15/185
Simulated moving beds: characterised by the components to be separated
B01D 15/1842
Simulated moving beds: characterised by apparatus features
B01D 15/22
Characterised by constructional or operational features: relating to the construction of the column
C07C 7/12
Purification; Separation; Use of additives: by adsorption, i.e. purification or separation of hydrocarbons with the aid of solids, e.g. with…