Falling-film process for the cocurrent evaporation of a solution
US4747915A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1986 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Mar 6, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S159/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A falling-film process and apparatus for the cocurrent evaporation of a solution is disclosed. The process utilizes a tube-bundle heat exchanger in which the upper ends of the individual tubes of the tube-bundle are closed. Apertures, preferably in the form of slots, are formed adjacent the closed-end of the individual tubes. A liquid heel is maintained above the highest of said apertures and flows into the interior of the tubes through said apertures. Upon entering the tubes the liquid and any vapor released therefrom flows cocurrently in a downward direction. The vapors released from the liquid are recycled to a point above the liquid heel through conduit means separate from the individual tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.