US 12,246,289 B2
Measurement of pressure differences within a vessel of spiral wound membrane modules
Steven D. Jons, Eden Prairie, MN (US); Luke Franklin, Minneapolis, MN (US); and Ian A. Tomlinson, Midland, MI (US)
Assigned to DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, Wilmington, DE (US)
Appl. No. 17/415,407
Filed by DDP SPECIALTY ELECTRONIC MATERIALS US, LLC, Wilmington, DE (US)
PCT Filed Jan. 23, 2020, PCT No. PCT/US2020/014750
§ 371(c)(1), (2) Date Jun. 17, 2021,
PCT Pub. No. WO2020/159792, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/798,060, filed on Jan. 29, 2019.
Prior Publication US 2022/0062826 A1, Mar. 3, 2022
Int. Cl. B01D 63/10 (2006.01); B01D 63/12 (2006.01)
CPC B01D 63/107 (2022.08) [B01D 63/106 (2013.01); B01D 63/12 (2013.01); B01D 2311/14 (2013.01); B01D 2313/21 (2013.01); B01D 2313/60 (2022.08)] 13 Claims
OG exemplary drawing
 
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 (23′) 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 an 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).