Dehydrogenation of mixed alcohols
AssigneeBP Chemicals Limited
InventorBenjamin Patrick Gracey
Life of this patent
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Abstract
Process for the production of alkenes from a feedstock comprising monohydric aliphatic paraffinic alcohols having from 2 to 3 carbon atoms, in which the monohydric aliphatic paraffinic alcohols containing 2 to 3 carbon atoms are dehydrated into the corresponding same carbon number alkenes at a pressure of more than 0.5 MPa but less than 4.0 MPa and at a temperature of less than 300° C. The alcohols present in the feedstock comprise ethanol, propanol(s), less than 1 wt % of methanol and less than 1 wt % of C3+ alcohols.
Claims19
Process for the production of alkenes from a feedstock comprising monohydric aliphatic paraffinic alcohols having from 2 to 3 carbon atoms, said process comprising dehydrating the monohydric aliphatic paraffinic alcohols containing 2 to 3 carbon atoms into the corresponding same carbon number alkenes, wherein the alcohols present in the feedstock comprise ethanol, propanol(s), less than 1 wt % of methanol and less than 1 wt % of C3+ alcohols;
- and wherein the dehydration step is operated at a pressure of more than 0.5 MPa but less than 4.0 MPa and at a temperature of less than 300° C.
Process for the conversion of hydrocarbon to alkenes comprising the steps of:
- a. converting in a syngas reactor hydrocarbon into a mixture of carbon oxide(s) and hydrogen,
- b. converting said mixture of carbon oxide(s) and hydrogen from step a in the presence of a particulate catalyst in a reactor at a temperature of between 200 and 400° C. and a pressure of 50 to 200 bar into a feedstock comprising at least one monohydric aliphatic paraffinic alcohols having from 2 to 3 carbon atoms alcohols,
- c. treating said feedstock from step b in order to have less than 1 wt % of methanol and less than 1 wt % of C3+ alcohols, and
- d. dehydrating the treated feedstock of step c into the corresponding same carbon number alkenes at a pressure of more than 0.5 MPa but less than 4.0 MPa and a temperature of less than 300° C.
Dependencies are inferred from the claim text.