FIELD: chemical or physical processes.
SUBSTANCE: disclosed is a method of producing ethylene carbonate and/or ethylene glycol, involving: contacting at least a portion of a stream of recycled gas containing impurities of vinyl iodide, with material of protective layer to produce treated gas flow, wherein material of protective layer contains carrier material, palladium and gold; and bringing into contact the gas feed stream for epoxidation, containing ethylene, oxygen and at least a portion of treated gas stream, with an epoxidation catalyst to obtain an epoxidation reaction product containing ethylene oxide and carbon dioxide; and contacting at least a portion of the epoxidation reaction product containing ethylene oxide and carbon dioxide, with a lean absorbent in the presence of an iodide-containing carboxylation catalyst to obtain a saturated absorbent stream comprising ethylene carbonate and/or ethylene glycol and a recycle gas stream, containing vinyl iodide impurities. Also disclosed is a reaction system for producing ethylene carbonate and / or ethylene glycol in which a method of producing ethylene carbonate and/or ethylene glycol is carried out, which is described above.
EFFECT: technical result is obtaining an improved system of a protective layer and an improved method of removing certain gaseous iodide-containing impurities from recycled gas stream in production of ethylene oxide, ethylene carbonate and/or ethylene glycol.
14 cl, 4 dwg, 1 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND SYSTEM FOR REMOVAL OF IODIDE IMPURITIES FROM A STREAM OF RECYCLE GAS IN PRODUCTION OF ETHYLENE OXIDE | 2016 |
|
RU2733849C2 |
| METHODS AND SYSTEMS FOR REMOVING ALKYL IODIDE IMPURITIES FROM RETURN GAS STREAM WHEN PRODUCING ETHYLENE OXIDE | 2016 |
|
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| METHOD OF OBTAINING ALKYLENECARBONATE AND/OR ALKYLENEGLYCOL | 2009 |
|
RU2506124C2 |
| METHODS AND SYSTEMS FOR RECYCLING PROCESS WATER IN PRODUCTION OF ETHYLENE GLYCOL | 2017 |
|
RU2737471C2 |
| METHOD FOR PRODUCTION OF ETHYLENE CARBONATE AND ETHYLENE GLYCOL, USING PROTECTIVE LAYER SYSTEM FOR REMOVAL OF ALKYL IODIDE | 2018 |
|
RU2786448C2 |
| RATIONAL USE OF HEAT ENERGY IN THE PROCESS OF PRODUCING ETHYLENE CARBONATE AND ETHYLENE GLYCOL | 2018 |
|
RU2769509C2 |
| METHOD FOR PRODUCTION OF ETHYLENE CARBONATE AND ETHYLENE GLYCOL | 2018 |
|
RU2786054C2 |
| METHOD OF OBTAINING ALKYLENECARBONATE AND ALKYLENEGLYCOL | 2009 |
|
RU2506123C2 |
| SYSTEM AND METHOD WITH A PROTECTIVE LAYER | 2016 |
|
RU2746130C2 |
| METHOD OF PRODUCING ALKYLENE GLYCOL | 2008 |
|
RU2466123C2 |
