FIELD: mass-exchange processes; rectification, absorption and distillation; chemical, petrochemical, by-product coke , wood-chemical, pharmaceutical, food-processing and other industries. SUBSTANCE: device has sectional housing with inlet and outlet branch pipes and swivel distributing sleeve with perforated surface. Perforations are so positioned that central angle on surface of distributing sleeve does not exceed central angle of largest section. EFFECT: extended field of control of liquid flow rates; adaptability to batch- operated mass-exchange apparatus. 6 cl, 3 dwg
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