FIELD: process engineering.
SUBSTANCE: invention may be used in chemical industry. Proposed wash column is formed by cylindrical envelope 1 wherein one or several filtration tubes run parallel to cylinder axis. At least, one filter 3 is arranged between the walls of said tubes to communicate inner chamber of filtration tubes 2 at pressure P1 with inner chamber of the column. To adjust flow rate of control leach 9 and/or suspension 4 fed into wash column, pressure difference ΔPsk is used existing in the column between the point located ahead of the front of rise of crystals 11 in suspension zone 17 and that located in zone located between crystal rise front and end of crystalline layer 10.
EFFECT: efficient and continuous control over technological process in hydraulic wash column.
7 cl, 1 ex, 3 dwg
