Process for the conversion of ethane to mixed lower alkanes to aromatic hydrocarbons
OwnerAnn Marie Lauritzen, Ajay Madhav Madgavkarinventors
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Abstract
A process for producing aromatic hydrocarbons which comprises a) contacting ethane or mixed lower alkanes with an aromatic hydrocarbon conversion catalyst to produce reaction products including benzene, b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step a), and c) hydrodealkylating the remaining reaction products to produce benzene. In a preferred embodiment, the feed is split into two streams, one of which is catalytically or thermally cracked to produce ethylene which is then combined with the remaining ethane or lower alkanes and contacted with the aromatic hydrocarbon conversion catalyst.
Claims20
A process for producing aromatic hydrocarbons which comprises:
- a) splitting an ethane feed or a mixed lower alkanes feed into first and second ethane or mixed lower alkanes streams,
- b) catalytically or thermally cracking the first ethane or mixed lower alkanes stream to produce ethylene or mixed lower alkenes,
- c) combining the ethylene or mixed lower alkenes with the second ethane or mixed lower alkanes stream, and
- d) contacting the combined stream with an aromatic hydrocarbon conversion catalyst to produce reaction products including benzene.
A process for producing aromatic hydrocarbons which comprises:
- a) contacting ethane or mixed lower alkanes with an aromatic hydrocarbon conversion catalyst to produce reaction products including benzene,
- b) separating methane, hydrogen, and C2-5 hydrocarbons from the reaction products of step a), and
- c) hydrodealkylating the remaining reaction products to produce benzene.
A process for producing aromatic hydrocarbons which comprises:
- a) contacting ethane or mixed lower alkanes with an aromatic hydrocarbon conversion catalyst to produce reaction products including benzene,
- b) hydrodealkylating all of the reaction products from step a), and
- c) separating benzene from the reaction products of step b) from gases including methane, hydrogen and lower C2-5 hydrocarbons and heavy aromatic hydrocarbons.
Dependencies are inferred from the claim text.