Patent ID: 7678227
Filing Date: 2010-03-16
Classification: B01D,Y02A,Y10S

Abstract:
1. A multi-stage-flash cross-tube evaporator comprising: an evaporator shell of elongated shape, including an evaporator shell bottom and an end wall, the end wall extending substantially vertically and transversely to a longitudinal axis of the evaporator shell; a plurality of first partition walls, each first partition wall being arranged substantially parallel to the end wall and dividing the evaporator shell internally into a plurality of flash stages, openings in the first partition walls allowing a solution flowing on the evaporator shell bottom to pass from each flash stage to the next and allowing the solution to flash down in each consecutive flash stage to a lower temperature compared to the temperature of the solution in the previous flash stage and to evaporate in each flash stage a portion of the solution, releasing a vapor; wherein each of at least two of the flash stages comprises: