CPC B01D 1/0082 (2013.01) [B01D 1/14 (2013.01); B01D 1/26 (2013.01); B01D 1/30 (2013.01); B01D 3/38 (2013.01); B01D 5/0027 (2013.01); B01D 5/0048 (2013.01); C07C 51/445 (2013.01); B01D 5/006 (2013.01); C07C 51/42 (2013.01)] | 4 Claims |
1. A plant for concentrating a tartaric acid solution, the plant comprising:
a first evaporation unit and a second evaporation unit, wherein said first and second evaporation units are arranged in series;
a pump for feeding a diluted tartaric acid solution into said first evaporation unit;
a barometric condenser placed downstream of said second evaporation unit, and
a system for feeding a first low-temperature vapor into said first evaporation unit, wherein the first low-temperature vapor has a temperature comprised between 70° C. and 90° C.;
wherein each of said first and second evaporation units comprises:
(i) a heat-exchange evaporation chamber, in which vapor comes into contact with a tartaric acid solution to be concentrated,
(ii) a liquid-aeriform separation chamber, connected to a head portion of said heat-exchange evaporation chamber,
(iii) a connecting portion that connects the liquid-aeriform separation chamber to a bottom portion of said heat-exchange evaporation chamber, and
(iv) a recirculation pump for the tartaric acid solution, the recirculation pump operatively connected to said connecting portion; and
wherein said first and second evaporation units are connected by a first pipe for transferring a partially concentrated tartaric acid solution, placed at a bottom portion of said first and second evaporation units, and by a second pipe for transferring a properly aeriform phase from a head portion of said liquid-aeriform separation chamber of said first evaporation unit to said heat-exchange evaporation chamber of said second evaporation unit,
wherein said connecting portion comprises a column that extends along a vertical axis, and
wherein said column of said connecting portion of said second evaporation unit comprises a pair of facing-flange pressure sensors spaced apart along the vertical axis of said column, each pressure sensor coupled to a tantalum fluid separator, and the pressure sensors configured to measure a difference in pressure along the vertical axis of said column.
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