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US 4,511,436 AGranted
Apparatus for the desalination of sea water
AssigneeD.V.T. Buro fur Anwendung Deutscher Verfahrenstechnik H. Morsy
InventorGamal el Din Nasser
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AssigneeD.V.T. Buro fur Anwendung Deutscher Verfahrenstechnik H. Morsy
InventorGamal el Din Nasser
Estimating the term…
In an apparatus for the desalination of sea water using a multi-effect evrator process, a sea water preheater and a falling film evaporator are both formed of similar stamped heat exchanger plates. The heat exchanger plates have a uniform arrangement of projections-depressions disposed in a grid-like manner with rows of the projections-depressions extending perpendicularly to one another. The plates are assembled in facing contact so that one pair of plates form tubular ducts and adjacent plates on each side of the pair combine with the plates forming the tubular ducts and provide slot-like ducts separated from and extending perpendicularly to the tubular ducts. Adjacent plates are welded together. The plates in the preheater form a continuous unit divided into stages. The plates in the falling film evaporator are arranged in individual units with each unit forming a separate stage.
Apparatus for desalinating sea water by a multi-effect evaporation process comprising elements designed, sized and arranged for maximizing efficiency, facilitating removal, of inert gases, maximizing feed distribution and facilitating assembly and maintenance, including a sea water preheater and a falling film evaporator each subdivided into a plurality of sections in accordance with predetermined and selected pressure and temperature stages, each of said sea water preheater and falling film evaporator comprises a plurality of heat exchanger plates with each plate having a pair of oppositely facing sides comprising a first side and a second side and each first and second sides having a first dimension and a second dimension extending perpendicularly of the first dimension, the surfaces of said first and second sides being similarly deformed providing projections on said first and second sides and depressions on the side opposite the projections, said projections-depressions extending in a grid-like arrangement in the direction of the first and second dimensions of said plates with said projections and depressions aligned in rows in the direction of the first and second dimensions, a pair of said plates arranged with the first sides thereof disposed in facing relation with the depressions in the first sides extending in the direction of the first dimension being disposed in opposed alignment and registration and forming tubular ducts extending in the first dimension direction, another said plate placed on each side of said pair of said plates with the second side of the another said plate facing the second side of the adjacent one of said pair of said plates with the projections on said second sides extending in the second dimension direction disposed in opposed alignment, registration and contacting relation for forming therebetween slot-like ducts extending in the direction of the second dimension.
Apparatus for desalinating sea water comprising elements designed, sized and arranged for maximizing efficiency, facilitating removal of inert gases, maximizing feed distribution and facilitating assembly and maintenance, including a heat exchanger assembly, said heat exchanger assembly comprises an array of similarly formed heat exchanger plates deformed from sheet material for forming a plurality of depressions on one sides of said plates and corresponding projections on the other sides of said plates, said projections-depressions are arranged in a grid-like manner in substantially parallel first rows and parallel second rows extending transversely of said first rows with said projections-depressions in said first and second rows disposed in alignment forming a corrugated grid-like structure, a pair of said plates are secured together in adjacent facing relationship and forming a mirror image of one another sealed along side edges of said plates for providing tubular ducts between said pair of plates so that fluid can flow in the direction of said ducts, another said plate secured to one plate of said pair in adjacent facing relation and forming a mirror image of the one plate of said pair, and the another plate and said one plate being sealed along edges extending transversely of the sealed edges of said pair of plates, and said another plate and the one plate of said pair of plates combining to form slot-like ducts therebetween through which a fluid can flow transversely of the direction of flow through said tubular ducts.
Dependencies are inferred from the claim text.