METHOD FOR PRODUCING CYCLOHEXANONE, CYCLOHEXANOL AND CYCLOHEXYL HYDROPEROXIDE, INSTALLATION FOR ITS IMPLEMENTATION AND A DEVICE FOR THE ADSORPTION OF REACTIVE GASES AND PRELIMINARY CYCLOHEXANE OXIDATION Russian patent published in 2018 - IPC C07C27/12 C07C35/08 C07C49/403 C07C409/06 B01J19/24 B01D53/14 

FIELD: technological processes.

SUBSTANCE: invention relates to a method for producing cyclohexanone, cyclohexanol and cyclohexyl hydroperoxide, which consists in converting cyclohexane into a mixture containing 0.5–4.0 wt. % cyclohexyl hydroperoxide and 0.5–5.0 wt. % cyclohexanol and cyclohexanone in cyclohexane, the action of oxygen-containing gas at a temperature of 150–180 °C a pressure of 0.8–1.6 MPa by the oxidation of cyclohexane, while at the initial stage of oxidation 0.1–1.0 % wt. oxide products is present in cyclohexane. In this case, before feeding cyclohexane into the liquid-phase oxidation reactors, a part of 5–10 % of the total amount of cyclohexane supplied to the oxidation is separated from its stream, and carry out its processing with an oxidizing agent to obtain oxidation products containing, in particular, cyclohexanone, cyclohexanol and cyclohexyl hydroperoxide, after which the cyclohexane treated with an oxidizing agent is returned to its total flow and the combined mixture with the content of oxide products up to 0.25 mass.% is fed to the main stage of the liquid-phase oxidation, which is subjected to catalytic or non-catalytic oxidation. Invention also relates to a plant for producing cyclohexanone, cyclohexanol and cyclohexyl hydroperoxide, and to a device for the absorption of reaction gases and the preliminary oxidation of cyclohexane.

EFFECT: proposed invention allows using simple technology to obtain the desired products with high yield while increasing the productivity of the process.

16 cl, 1 dwg, 3 tbl, 3 ex