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AssigneeWaterise AS
InventorsMorten Hana, Tom Gunnar Omberg, Jo Jernsletten, Beatriz Garcia Fernandez
Estimating the term…
The present invention concerns a subsea filter-box with a plurality of pressure-vessels 1 forming at least one group of longitudinal pressure-vessels. A first support plate 7 and a second support plate 8 includes a plurality of fixing geometries 20, each supporting pressure-vessel end sections 17, 6. Each of the plurality of pressure-vessels extends between a fixture on the first support plate and a fixture on the second support plate. Each group of pressure-vessels includes at least one entry pressure-vessel one end pressure-vessel 14, adjoining and in liquid connection with an intermediate pressure-vessel 16; and a filter-box frame, clamping the first support plate 7 and the second support plate 8 to the plurality of pressure-vessels. A filter module with at least one filter-box is also disclosed.
1-13. (canceled)
A subsea filter-box with a plurality of longitudinal pressure-vessels forming at least one group of longitudinal pressure-vessels, wherein each pressure vessel includes a membrane, a first end section and a second end section;
The subsea filter-box of claim 1, wherein the entry pressure-vessel is a 5-port pressure-vessel, the end pressure-vessel is a 4-port pressure-vessel and the at least one intermediate pressure-vessel is a 6-port pressure-vessel.
The subsea filter-box of claim 2, wherein the entry pressure-vessel furthermore includes a permeate/filtrate outlet on the second end section side face, and the end pressure-vessel includes a retentate inlet on the second end section side face.
The subsea filter-box of claim 1, wherein the liquid inlet, the retentate outlet, and the permeate/filtrate outlet of a pressure vessel is fixed to the feed liquid outlet, the retentate inlet and the permeate inlet respectively of a neighbouring pressure vessel with releasable liquid couplings.
The subsea filter-box of claim 4, wherein the releasable liquid couplings provides mechanical joints providing a stiff connection, mechanically fixing the pressure-vessels in a group of longitudinal pressure-vessels to each other.
The subsea filter-box of claim 1, wherein each pressure vessel includes a permeate end cap sealing a permeate side of the pressure-vessel, the permeate end cap including a permeate channel fixed to a threaded portion of a permeate/filtrate outlet tube of the pressure-vessel with an end cap attachment bracket formed as a tube with internal threads threaded onto the permeate/filtrate outlet tube, and with ports on the side to allow the permeate to flow out of the tube, holding the end cap to the permeate/filtrate outlet tube.
The subsea filter-box of claim 1, wherein the first end section end face is parallel to the second end section end face.
The subsea filter-box of claim 1 wherein the membrane is a Reverse Osmosis (RO) membrane and wherein the subsea filter-box is adapted to be used for subsea desalination whereby the feed liquid is seawater, the retentate is brine and the permeate is freshwater.
A retrievable subsea filter module with at least one subsea filter-box of claim 1, including a plurality of groups of longitudinal pressure-vessels further including:
The retrievable subsea filter module of claim 9, including two subsea filter-boxes wherein a first of the two subsea filter-boxes is located on top of a second of the two subsea filter-boxes, whereby a longitudinal centreline of each pressure vessel of the first subsea filter-box is coinciding with a longitudinal centreline of a pressure vessel of the second subsea filter-box.
The retrievable subsea filter module of claim 9, further including a subsea desalination template with a retrievable subsea filter module zone;
A longitudinal pressure-vessel comprising:
The longitudinal pressure-vessel of claim 12, wherein the membrane is an RO-membrane, and the pressure-vessel is a desalination pressure vessel.
Dependencies are inferred from the claim text.