FIELD: chemistry.
SUBSTANCE: at a defined stage one or more nitrogen containing compounds are added, and the solvent stream is separated, treated with acid until nitrogen content of 50 mass ratio/million in the form of nitrogen organic compounds is attained, and at least part of the stream is returned to the epoxidation stage. Description is also given of a method of catalyst epoxidation of propene, which form an integral unit with the proposed acid treatment and return of solvent into the process of treating the reaction mixture.
EFFECT: considerable lowering of deactivation of the catalyst when recycling the solvent.
19 cl, 1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| OLEFIN EPOXIDATION PROCESS | 2003 |
|
RU2322442C2 |
| METHOD OF PURIFYING CRUDE PROPENE-OXIDE | 2003 |
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RU2766954C2 |
| METHOD OF PROPANE EPOXIDATION | 2004 |
|
RU2340608C2 |
| WATER HYDROGEN PEROXIDE SOLUTION, METHOD OF ITS OBTAINING AND ITS APPLICATION | 2008 |
|
RU2468990C2 |
