US 11,813,574 B2
Subsea seawater filtration apparatus
Andrei Strikovski, Spring, TX (US); Janardhan Davalath, Spring, TX (US); Abhishek Shah, Cypress, TX (US); Loreen Ople Villacorte, Velp (NL); Paul Verbeek, Voorhout (NL); and Thomas Krebs, Doorwerth (NL)
Filed by FMC Technologies, Inc., Houston, TX (US)
Filed on Apr. 18, 2022, as Appl. No. 17/723,287.
Application 17/723,287 is a continuation of application No. 16/619,072, abandoned, previously published as PCT/US2017/038752, filed on Jun. 22, 2017.
Prior Publication US 2023/0098796 A1, Mar. 30, 2023
Int. Cl. B01D 61/02 (2006.01); B01D 63/06 (2006.01); C02F 103/08 (2006.01); B01D 61/08 (2006.01); B01D 65/02 (2006.01); B01D 65/08 (2006.01); C02F 1/44 (2023.01); C02F 1/76 (2023.01)
CPC B01D 63/06 (2013.01) [B01D 61/026 (2022.08); B01D 61/027 (2013.01); B01D 61/08 (2013.01); B01D 65/02 (2013.01); B01D 65/08 (2013.01); C02F 1/442 (2013.01); C02F 1/76 (2013.01); B01D 2311/12 (2013.01); B01D 2311/2649 (2013.01); B01D 2313/04 (2013.01); B01D 2313/08 (2013.01); B01D 2313/18 (2013.01); B01D 2313/20 (2013.01); B01D 2319/025 (2013.01); B01D 2319/04 (2013.01); B01D 2321/08 (2013.01); B01D 2321/168 (2013.01); C02F 2103/08 (2013.01); C02F 2303/16 (2013.01); C02F 2303/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A filtration apparatus which comprises:
a tubular casing which includes a longitudinal axis and first and second casing ends;
a plurality of partition plates which are positioned in the casing and are sealed thereto to thereby define a plurality of axially successive chambers within the casing, including an intake collection chamber between a first of said partition plates and the first casing end, a discharge collection chamber between a second of said partition plates and the second casing end, and a reject collection chamber opposite the second partition plate from the second casing end;
a plurality of elongated filtration membrane stacks which are positioned side-by-side in the casing generally parallel to the longitudinal axis, each filtration membrane stack comprising an intake end which is fluidly connected to the intake collection chamber, a discharge end which is fluidly connected to the reject collection chamber, and a permeate channel which extends between the intake and discharge ends and is fluidly connected to the discharge collection chamber, wherein an end of the permeate channel located adjacent the intake end is sealed from the intake collection chamber;
an intake pipe which comprises a first end that is fluidly connected to the intake collection chamber and a second end that is fluidly connected to a first connector which is located proximate the second casing end;
a discharge pipe which comprises a first end that is fluidly connected to the discharge collection chamber and a second end that is fluidly connected to a second connector which is located proximate the first connector; and
a reject pipe which comprises a first end that is fluidly connected to the reject collection chamber and a second end that is fluidly connected to a third connector which is located proximate the first and second connectors;
wherein a fluid to be filtered is communicated to the intake collection chamber through the intake pipe and is separated by the filtration membrane stacks into a permeate which is discharged from the discharge collection chamber through the discharge pipe and a reject fluid which is discharged from the reject collection chamber through the reject pipe; and
wherein the first, second and third connectors comprise part of a single multibore subsea connector hub.