Societa' Italiana Resine S.i.r. S.p.a.

Societa' Italiana Resine S.p.a.

Giovanni Tagliaferri

Diego Barba

Giuseppe Liuzzo

Antonino Germana

Giancarlo Spizzichino

Saline water is desalted by flowing it in two evaporation stages in series in the form of a film falling on the inside of heat-exchange tubes. The pressure and temperature in the second evaporation stage are lower than in the first stage. The steam evolved in the second stage is compressed and delivered to the first stage where it condenses on the tubes, whereas the steam evolved in the first stage is fed in the second stage where it condenses on the tubes. The condensation heat of the steam is used for vaporizing said saline water from said film. This technique allows a production of 15-50 cu.m/hr of soft water, instead of a production of 15-20 cu.m/hr usually obtained by conventional thermocompression techniques.

Apparatus for desalting saline water

A multistage flash-evaporator for producing soft water from a saline water, comprising a shell forming a pair of lobes enclosing therebetween a spinal portion in symmetrical arrangement with respect to a vertical longitudinal mid-plane. The top and bottom walls of the spinal portion are, in cross-sectional shape, circular arcs having their centres of curvature on the said mid-plane, while the lobes are polycentric curves each of which has its centres of curvature on a plane parallel to the mid-plane. A specifically shaped hood arrangement in the shell is provided to define in each stage a condensation chamber centrally located between a pair of evaporation chambers.

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Rome, Italy

Giovanni Tagliaferri