MULTISTAGE EVAPORATING-THICKENING/CONDENSING APPARATUS AND METHOD

Title:

MULTISTAGE EVAPORATING-THICKENING/CONDENSING APPARATUS AND METHOD

Document Type and Number:

WIPO Patent Application WO/2010/029723

Kind Code:

A1

Abstract:

Provided is a multistage evaporating-thickening/condensing apparatus especially for improving a gasification efficiency, a condensation efficiency and energy saving easily. The apparatus heats a stock solution thereby to gasify a portion of a solvent into a thickened liquid in an evaporation chamber and to convert the gasified steam into a condensed liquid in a condensation chamber. The apparatus is characterized by comprising: an evaporating treatment unit (1) having a plurality of evaporation chambers (11 - 12) laminated vertically; a condensing treatment unit (2) disposed to face the evaporating treatment unit and having a plurality of condensation chambers (20 - 22) vertically laminated so as to be individually displaced by predetermined dimensions from the individual evaporation chambers; demisters (3) disposed to make the adjoining evaporation chambers and the condensation chambers communicate with each other; a gas flow forming means (4) for circulating a gas flow through the demisters (3) from the evaporation chamber (10) at the uppermost stage to the condensation chamber (22) at the lowermost stage; liquid-liquid heat exchangers (5) for exchanging heat between a stock solution (a) and the condensed liquid accumulating in the condensation chambers thereby to heat the stock solution (a); and an injection means (6) for converting the stock solution, the thickened liquid and the condensed liquid into liquid droplets or mist.

Inventors:

YABE TAKASHI (JP)
MASUDA ISAMU (JP)
SHIMABAYASHI YOKICHI (JP)

Application Number:

PCT/JP2009/004440

Publication Date:

March 18, 2010

Filing Date:

September 08, 2009

Export Citation:

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Assignee:

YABE TAKASHI (JP)
NISSO ENGINEERING CO LTD (JP)
MASUDA ISAMU (JP)
SHIMABAYASHI YOKICHI (JP)

International Classes:

B01D1/20; B01D1/26; B01D5/00; C02F1/04; C02F1/14

Foreign References:

US5096543A	1992-03-17
JPS58124580A	1983-07-25