Hydrogen rejection in methanol to hydrocarbon process
AssigneeHaldor Topsoe A/S
InventorsFinn JOENSEN, Uffe Vie MENTZEL, Ian MENJON
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Abstract
The present application relates to a process for production of hydrocarbons comprising the steps of —converting a feed stream comprising alcohols, ethers or mixtures hereof over a metal-containing zeolite based catalyst, active in dehydrogenation of hydrocarbons, in a conversion step thereby obtaining a conversion effluent, —separating said effluent to obtain an aqueous process condensate stream, a liquid hydrocarbon stream and a gaseous stream, —removing part of the hydrogen formed in the conversion step, and recycling at least part of the gaseous and/or liquid hydrocarbon stream to the conversion step.
Claims30
A process for production of hydrocarbons comprising the steps of
- converting a feed stream comprising alcohols, ethers or mixtures hereof over a metal-containing zeolite based catalyst, active in dehydrogenation of hydrocarbons, in a conversion step thereby obtaining a conversion effluent,
- separating said effluent to obtain an aqueous process condensate stream, a liquid hydrocarbon stream and a gaseous stream,
- removing part of the hydrogen formed in the conversion step,
- obtaining an at least partly H2 depleted recycle stream,
- recycling at least part of the at least partly H2 depleted recycle stream, the gaseous and/or liquid hydrocarbon streams to the conversion step.
12A. (canceled)
A bifunctional catalyst for conversion of methanol, dimethyl ether, or mixtures hereof, to hydrocarbons, said catalyst comprising a metal and/or a metal oxide and ZSM-5.
A bifunctional catalyst for conversion of methanol to hydrocarbons comprising Zn and ZSM-5.
A plant for the conversion of methanol to hydrocarbons comprising aromatics, said plant comprising:
- means for supplying a feed stream comprising methanol, dimethyl ether or mixtures hereof
- a conversion reactor,
- a separator for separating a conversion effluent into a gaseous recycle stream, process condensate and a liquid product, and
- means for removing H2 from at least part of the effluent thereby obtaining at least one at least partially H2 depleted recycle stream.
Dependencies are inferred from the claim text.