FIELD: chemistry.
SUBSTANCE: invention relates to a method of improving selectivity of ethylene epoxidation method using highly selective epoxidation catalyst based on silver. Method is realised in a reactor with multiple pipes filled with catalyst. Catalyst layer is contacted with raw material for a period of time (T1). Raw material contains ethylene and oxygen, organic chloride. Amount of organic chloride added to raw material is then reduced, and catalyst is treated by adding a co-regulator to material in an amount of 0.1-0.4 wt% with respect to raw material. Separation of chloride is carried out for 2-72 hours (T2). After separation of chloride amount of organic chloride added in raw material is increased, and added amount of saturated hydrocarbon co-regulator is reduced.
EFFECT: technical result is increased selectivity of catalyst.
12 cl, 1 ex, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR IMPROVING SELECTIVITY OF EO CATALYST | 2011 |
|
RU2583786C2 |
| METHOD OF INCREASING SELECTIVITY OF EPOXIDATION CATALYST | 2012 |
|
RU2606504C2 |
| METHOD OF IMPROVING SELECTIVITY OF CATALYST AND A OLEFIN EPOXIDATION PROCESS | 2003 |
|
RU2314156C2 |
| METHOD AND SYSTEMS FOR EPOXIDATION OF OLEFIN | 2002 |
|
RU2294327C2 |
| CATALYST CARRIER, CATALYST AND USE THEREOF | 2012 |
|
RU2660419C2 |
| METHOD OF PRODUCING ETHYLENE OXIDE | 2004 |
|
RU2378264C2 |
| METHOD FOR OBTAINING ETHYLENEOXIDE WITH IMPROVED REGULATION | 2011 |
|
RU2581365C2 |
| PRODUCING ETHYLENE OXIDE USING FIXED CONCENTRATION OF RETARDANT | 2008 |
|
RU2473547C2 |
| METHOD OF INITIATING EPOXIDATION PROCESS, CATALYST AND EPOXIDATION PROCESS | 2003 |
|
RU2311229C2 |
| METHOD OF PERFECTING PROCESS OF PRODUCING ETHYLENE OXIDE | 2004 |
|
RU2329259C2 |
