FIELD: chemical engineering. SUBSTANCE: when preparing solutions with specified concentrations for semicontinuous reactors, as information paths to control reactor filling degree, density, and conductivity of solutions, selective and sequential control principles are used to stabilize temperature regime in stages of loading the first and the second components and also of discharging reactor. These principles are accompanied with introducing (i) logical three-channel majority two-of-three element when developing control effect on stopping loading the second component and (ii) logical timer-type element for determining time to discharge reactor. EFFECT: enhanced efficiency of process. 3 cl, 4 dwg, 1 tbl
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