US 12,076,660 B2
Plate heat exchanger, a heat exchanging plate and a method of treating a feed such as sea water
Matz Andersson, Lund (SE); Hjalmar Joensen, Esbjerg (DK); Ralf Blomgren, Falsterbo (SE); Björn Wilhelmsson, Löddeköpinge (SE); and Jonas Sloth, Copenhagen S (DK)
Assigned to ALFA LAVAL CORPORATE AB, Lund (SE)
Appl. No. 17/057,400
Filed by ALFA LAVAL CORPORATE AB, Lund (SE)
PCT Filed Jun. 4, 2019, PCT No. PCT/EP2019/064474
§ 371(c)(1), (2) Date Nov. 20, 2020,
PCT Pub. No. WO2019/234015, PCT Pub. Date Dec. 12, 2019.
Claims priority of application No. 18176540 (EP), filed on Jun. 7, 2018.
Prior Publication US 2021/0197098 A1, Jul. 1, 2021
Int. Cl. A61L 9/00 (2006.01); B01D 1/22 (2006.01); B01D 1/30 (2006.01); B01D 3/02 (2006.01); B01D 5/00 (2006.01); C02F 1/08 (2023.01); F28D 9/00 (2006.01); F28F 3/08 (2006.01); F28F 3/10 (2006.01); C02F 1/04 (2023.01); C02F 103/08 (2006.01); F28D 21/00 (2006.01)
CPC B01D 1/221 (2013.01) [B01D 1/30 (2013.01); B01D 5/006 (2013.01); C02F 1/08 (2013.01); F28D 9/005 (2013.01); F28F 3/086 (2013.01); F28F 3/10 (2013.01); C02F 1/048 (2013.01); C02F 2103/08 (2013.01); F28D 21/00 (2013.01); F28D 2021/0066 (2013.01); F28F 2210/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A plate heat exchanger for treatment of a feed such as sea water according to a rising film technique, the plate heat exchanger including a plate package comprising a plurality of heat exchanging plates arranged in a successive order, the plate package defines a heating volume for receiving a heating medium, a cooling volume for receiving a cooling medium and a plurality of process volumes, each of the volumes being fluidly separated from each other in the plate package, each of the process volumes includes:
an evaporation section being arranged to permit evaporation of at least a part of the feed, the evaporation section having a bottom,
a separation section being arranged to separate a non-evaporated part of the feed from an evaporated part of the feed,
a condensation section being arranged to condense the evaporated part of the feed,
wherein each heat exchanging plate defines a first thermal interface between the heating volume and the evaporation section of a first process volume of the plurality of process volumes, a second thermal interface between the cooling volume and the condensation section of a second process volume of the plurality of process volumes, and at least one further thermal interface between an evaporation section and a condensation section of two adjacent process volumes, and
wherein each of the process volumes comprises a feed inlet located at the bottom of the evaporation section and a non-evaporated feed outlet located below the separation section when the plate package is disposed in a normal position of use so that the feed entering the evaporation section by way of the feed inlet and evaporated in the evaporation section is evaporated feed that flows upward to the separation section as a part of the rising film technique.