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1. WO2020159792 - MESURE DE DIFFÉRENCES DE PRESSION À L'INTÉRIEUR D'UN CONTENANT DE MODULES DE MEMBRANES ENROULÉES EN SPIRALE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS:

1. A spiral wound module (2) comprising:

a) at least one membrane envelope (4) wound about a hollow permeate collection tube (8) to form a cylinder with first scroll face (30), an opposing scroll face (32), and an outer peripheral surface (3),

b) a porous center section (15) of the permeate collection tube (8) located axially between a first distal section (23) of the permeate collection tube (8) near the first scroll face (30) and an opposing distal section (25) of the permeate collection tube (8) near the opposing scroll face (32), wherein the porous center section (15) contains holes (24) that pass from the inside surface (5) to the outside surface (7) of the permeate collection tube (8) and that connect a permeate channel (12) within the membrane envelope (4) to the interior cavity (9) of the hollow permeate collection tube (8),

c) a feed channel (6) adjacent to the membrane envelope (4), wherein the feed channel is suitable to enable feed flow through the spiral wound membrane module (2) between the first scroll face (30) and the opposing scroll face (32), and

d) at least one endcap assembly (31) affixed to the spiral wound module (2) and abutting said first scroll face (30), said endcap assembly (31) including an outer ring (33) that defines an outer periphery (36) of the endcap assembly (31) and surrounds a feed fluid access pathway (65) connected to the feed channel (6);

wherein the spiral wound module assembly is characterized by:

the endcap assembly (31) comprising a connecting conduit (45) that passes radially through a portion of the endcap assembly (31), defining a fluid passageway between an inner conduit end (46) and an outer conduit end (47); and a differential pressure sensor (49) attached to the endcap assembly (31) and fluidly connected to the fluid passageway of the connecting conduit (45).

2. A spiral wound module assembly (21) comprising:

a) a pressure vessel (40) comprising: a chamber (41) including an inner peripheral

surface (60) extending along an axis (X) between a first vessel end (38) and a second vessel end (38’), and at least one feed inlet port (42), concentrate outlet port (42’), and permeate outlet port (44);

b) a first spiral wound module (2’) located within the chamber (41), said first spiral wound module (2’) comprising:

i) at least one first membrane envelope (4’) wound about a hollow first permeate

collection tube (8’) to form a cylinder with first scroll face (30’), a first opposing scroll face (32’), and a first outer peripheral surface (3’),

ii) a first porous center section (15’) of the first permeate collection tube (8’) is located axially between two first distal sections (23’, 25’), wherein the first porous center section (15’) contains a first set of holes (24’) that pass from a first inside surface (5’) to a first outside surface (7’) of the first permeate collection tube (8’) and that connect a first permeate channel (12’) within the first membrane envelope (4’) to the first interior cavity (9’) of the first permeate collection tube (8’),

iii) a first feed channel (6’) adjacent to the first membrane envelope (4’), wherein the first feed channel (6’) is suitable to enable feed flow through the first spiral wound module (2’) between the first scroll face (30’) and the first opposing scroll face (32’), and iv) a first endcap assembly (3 ) affixed to the first spiral wound module (2’) and abutting the first scroll face (30’), said first endcap assembly (3 ) including a first outer ring (33’) that defines a first outer periphery (36’) of the first endcap assembly (31’);and c) a second spiral wound module (2”) adjacent the first spiral wound module (2’), said second spiral wound module (2”) comprising:

i) at least one second membrane envelope (4”) wound about a hollow second permeate collection tube (8”) to form a cylinder with second scroll face (30”), a second opposing scroll face (32”), and a second outer peripheral surface (3”),

ii) a second porous center section (15”) of the second permeate collection tube (8’) is located axially between second distal sections (23”, 25”) of the second permeate collection tube (8’), wherein the second porous center section (15”) contains a second set of second holes (24”) that pass from the second inside surface (5”) to the second outside surface (7”) of the second permeate collection tube (8”) and that connect a second permeate channel (12”) within the second membrane envelope (4”) to the second interior cavity (9”) of the second permeate collection tube (8’),

iii) a second feed channel (6”) adjacent to the second membrane envelope (4”), wherein the second feed channel (6”) is suitable to enable feed flow through the second spiral wound module (2”) between the second scroll face (30”) and the second

opposing scroll face (32”), and

iv)a second endcap assembly (31”) affixed to the second spiral wound module (2”) and abutting the second scroll face (30”);

wherein the first endcap assembly (3 ) is adjacent the second endcap assembly (32”); a feed fluid pathway (61) passes through a central region (63) located between the first scroll face (30’) and the second scroll face (30”) and connects the first feed channel (6’) with the second feed channel (6”); the feed fluid pathway (61) comprising a feed fluid access pathway (65) connected to the first feed channel (6’) at the first scroll face (30’); and the first outer ring (33’) surrounds the feed fluid access pathway (65) and includes a radially extending annular feed flow resistor (19) contacting the inner peripheral surface (60) of the chamber (41); and

wherein the spiral wound module assembly (21) is characterized by:

a) the first and second endcap assemblies (3 , 31”) enable a peripheral path (64) around the second scroll face (30”) that fluidly connects the central region (63) and a second peripheral space (62”), wherein the second peripheral space (62”) is located between the second outer peripheral surface (3”) of the second spiral wound module (2”) and the inner peripheral surface (60) of the chamber (41); b) an instrumented endcap assembly (59) selected from the first endcap assembly (3 ) and the second endcap assembly (31”), wherein the instrumented endcap assembly (59) comprising a connecting conduit (45) that passes radially through a portion of the instrumented endcap assembly (59), said connecting conduit (45) defining a fluid passageway between an inner conduit end (46) and an outer conduit end (47); and

c) a differential pressure sensor (49) attached to the instrumented endcap assembly (59) and fluidly connected to both the connecting conduit (45) and the feed fluid access pathway (65).

3. The spiral wound module assembly (21) of claim 2 wherein the differential pressure sensor (49) includes a deformable barrier (72) suitable to prevent fluid flow between the fluid passageway of the connecting conduit (45) and said feed fluid access pathway (65) and

resulting in different measurable electronic properties as differential pressure varies across the barrier (72).

4. The spiral wound module assembly (21) of claim 3 wherein the instrumented endcap

assembly (59) has an outer ring (33) that encompasses part of the central region (63), and the differential pressure sensor (49) is located within the outer ring (33).

5. The spiral wound module assembly (21) of claim 3 wherein an annular groove (37) is located on the first outer periphery (36) of the first outer ring (33) and the radially extending annular feed flow resistor (19) is a brine seal (39) located within the annular groove (37).

6. The spiral wound module assembly (21) of claim 3 wherein the second outer peripheral

surface (3”) of the second spiral wound module (2”) is porous and the feed fluid pathway (61) comprises the peripheral path (64).

7. The spiral wound module assembly (21) of claim 3 comprising a first peripheral space

located between the first outer peripheral surface (3’) of the first spiral wound module (2’) and the inner peripheral surface (60) of the chamber (41); a first resistance to bypass water flow from said first peripheral space (62’) to said central region (63); and a second resistance to bypass water flow from said central region (63) to said second peripheral space (62”); wherein the first resistance to bypass water flow is at least ten times the second resistance to bypass water flow.

8. The spiral wound module assembly (21) of claim 3, wherein the inner conduit end (46) is located within the outer ring (33), and the outer conduit end (47) is located at the outer periphery (36) of the first outer ring (33) and axially positioned between the opposing scroll face (32’) and the feed flow resistor (19).

9. The spiral wound module assembly (21) of claim 3, wherein the instrumented endcap

assembly (59) is selected from the group consisting of

a) the first endcap assembly (3 ), further comprising an inner ring (57) that is sealed to the first hollow permeate collection tube (8’) and comprises a first seal surface (5 ) suitable to compress a sealing member (48) between said first seal surface (5 ) and a

second seal surface (51”) located on the first spiral wound module (2”); and wherein said connecting conduit (45’) passes radially through the inner ring (57) and is fluidly connected to the first interior cavity (9’) of the first hollow permeate collection tube (8’); and

b) the second endcap assembly (31”), further comprising an inner ring (57) that is sealed to the second hollow permeate collection tube (8”) and comprises a second seal surface (51”) suitable to compress a sealing member (48) between said second seal surface (51”) and a first seal surface (5 ) located on the first spiral wound module (2’); and wherein said connecting conduit (45”) passes radially through the inner ring (57) and is fluidly connected to the second interior cavity (9”) of the first hollow permeate collection tube (8’); and

wherein the compressed sealing member (48) joins the first and second interior cavities (9’, 9”) of respective spiral wound membrane modules ( T ,2”) and isolates the interior of a combined permeate collection region (50) from the feed fluid access pathway (65), and wherein the connecting conduit (45) is axially located between the sealing member (48) and the scroll face (30) abutting the abutting instrumented endcap assembly (59).

10. The spiral wound module assembly (21) of claim 9, wherein a permeate flow restrictor (73) is provided within the combined permeate collection region (50) and axially located between the first porous center section (15’) and the second porous center section (15”).

11. The spiral wound module assembly (21) of claim 7, wherein

a) the first and second outer peripheral surfaces (3’, 3”) are porous and in fluid

communication with first and second feed channels (6’, 6”) of first and second spiral wound modules (2’, 2”), respectively;

b) the first endcap assembly (3 ) covers at least 75% of the first scroll face (30’) and is suitable to restrict at least 75% of feed flow through the first scroll face (30’) to open areas located closer to the first permeate collection tube (8’) than to the first outer peripheral surface (3’); and

c) the second endcap assembly (31”) covers at least 75% of the second scroll face (30”) and is suitable to restrict at least 75% of feed flow entering the second spiral wound module (2”) to entering the second feed channel (6”) through the second outer peripheral surface (3”).