| abstract |
Method for the treatment of inorganic salts resulting from t he production of pyran, i. e. mixtures K2CO3, KHCO3, KCl, KBr, is realised by a thermal conversion of KHCO3 to K2CO3 in the aqueou s medium and by isolation of ethanol and pyran absorbed, and by d istillation of the aqueous steam in the CO2 under the atmospheric pressure. The mixture of KCl and KBr are isolated from the solut ion of K2CO3. The aqueous solution K2CO3 is purified sorptively b y the active coal and K2CO3 in the solid form is obtained in the spraying kiln with desolventizer. |