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US 10,213,773 B2Granted
Process for the conversion of oxygenates to olefins
AssigneeBASF SE
InventorsKirsten Spannhoff, Florina Corina Patcas, Ekkehard Schwab, Alexander Weck, Kerem Bay
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Abstract
The present invention relates to a process for converting oxygenates to olefins, comprising (1) providing a gas stream comprising one or more ethers; (2) contacting the gas stream provided in (1) with a catalyst, the catalyst comprising a support substrate and a layer applied to the substrate, the layer comprising one or more zeolites of the MFI, MEL and/or MWW structure type.
Claims21
A process for converting oxygenates to olefins, the process comprising:
- converting one or more C1-C4 alcohols or mixtures of two or more thereof to one or more ethers in a dehydrogenation reactor to provide a gas stream comprising the one or more ethers and water;
- contacting a catalyst, which includes a support substrate and a catalytic layer applied to the substrate, the layer comprising one or more zeolites of the MFI, MEL, or MWW structure type or any one mixture thereof, with the gas stream and further comprising
- calcining the catalyst only in air atmosphere to provide a regenerated catalyst,
- providing the gas stream, and
- contacting the regenerated catalyst with the gas stream wherein selectivity of C3 and C4 is increased after being subjected to the regeneration of the catalyst.
2 more elements
A process for converting oxygenates to olefins, the process comprising:
- converting one or more C1-C4 alcohols or mixtures of two or more thereof to one or more ethers in a dehydrogenation reactor to provide a gas stream comprising the one or more ethers and water;
- contacting a catalyst, which includes a support substrate and a catalytic layer applied to the substrate, the layer comprising one or more zeolites of the MFI, MEL, or MWW structure type or any one mixture thereof, with the gas stream and further comprises the further steps of
- (3) calcining the catalyst for regeneration only in air atmosphere;
- (4) providing a gas stream comprising one or more ethers;
- (5) contacting the gas stream provided in (4) with the regenerated catalyst.
2 more elements
Dependencies are inferred from the claim text.