SEPARATION OF SOLUTION

PROBLEM TO BE SOLVED: To separate liquids particularly from a liquid mixture that is discharged from an artificial leather production process and contains amide-based solvents, hydrocarbon-based organic solvents, water, polyolefins and elastic polymers advantageously in the aspect of energy saving....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: YANAGAWA MASATOSHI, KOWAKA TAKESHI, SAKANE SOICHI, WATANABE KAZUNORI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To separate liquids particularly from a liquid mixture that is discharged from an artificial leather production process and contains amide-based solvents, hydrocarbon-based organic solvents, water, polyolefins and elastic polymers advantageously in the aspect of energy saving. SOLUTION: This solution separation separates a solution from a liquid mixture that contains amide-based solvents, hydrocarbon-based organic solvents, water, polyolefins and elastic polymers through two or more successively connected evaporators 40, 47, 55, 56, of different operating pressure in the order of a evaporator of the highest pressure to the next evaporator of lower pressure while the vapor developed in an evaporator of higher pressure is supplied to the next evaporator of lower pressure as a heat source.