METHOD OF CONTROLLING PROCESS OF PRODUCING POTASSIUM CHLORIDE Russian patent published in 2015 - IPC C01D3/04 G05D27/00 

FIELD: chemistry.

SUBSTANCE: invention can be used in production of potassium chloride using a halurgic method. The method of controlling the process of producing potassium chloride by varying the input water stream includes controlling the flow of water into the solution fed for crystallisation depending on the weight flow rate thereof, content of potassium chloride, magnesium chloride and crystalline sodium chloride therein and temperature thereof. The method includes calculating the degree of saturation of the solution with potassium chloride, the increase factor of the concentration of the saturated solution with sodium chloride for degree of saturation with potassium chloride of less than 1, the increase factor of the degree of saturation of the solution with sodium chloride due to content of crystalline sodium chloride therein. The volume flow rate of the solution is determined and the weight flow rate of the solution is determined from the obtained data. The potassium chloride saturation concentration of the solution, total concentration of NaCl, concentration of MgCl₂ and water in the solution is then calculated. The measured and calculated values of process parameters are input into the water flow rate control system.

EFFECT: invention simplifies control of the process of producing potassium chloride.

1 tbl, 2 ex