INSTALLATION FOR COMBINED OBTAINING OF PHOSPHATE SALTS AND POTASSIUM SULPHATE Russian patent published in 2017 - IPC C01B25/32 C01D5/02 C01B25/01 C01F11/00 C05D1/00 

FIELD: chemistry.

SUBSTANCE: apparatus for producing combined and phosphate salts of potassium sulfate comprises a device for producing potassium sulfate and hydrochloric acid from a potassium chloride and sulfuric acid. Said unit comprises a furnace for producing potassium sulfate 1, the apparatus for obtaining abrasive hydrochloric acid node 2 and preparation of hydrochloric acid leach 3. Obtaining unit phosphate from a phosphate raw material comprises an assembly of hydrochloric acid leaching 4, the apparatus for preparing a solution for neutralisation 7, the associated pipe manifold assembly of neutralisation liquid phase and deposition of phosphate 6. Then sequentially installed highways are connected to separate filter 8 phosphates, phosphates washing unit 9 and the unit 10 for drying phosphates. Between the node 4 of hydrochloric acid leaching and node of neutralisation liquid phase and deposition of phosphate 6, there is an apparatus for separating solid and liquid phases after leaching 5, which is connected with them by pipework. The furnace for producing potassium sulfate through 1 output gas duct is connected with the device to obtain 2 abrasive hydrochloric acid, and the latter is connected through the piping assembly by preparation of hydrochloric acid leach 3 to node 4 of hydrochloric acid leaching.

EFFECT: invention allows simultaneous and phosphate salts of potassium sulfate at a lower cost.

6 cl, 1 dwg, 1 ex