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US 2011/0218372 A1Published application
Processes and systems for the staged synthesis of alkyl bromides
AssigneeMarathon Gtf Technology, Ltd.
InventorsJohn J. Waycuilis, William J. Turner
Life of this patent
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Abstract
Processes and systems for synthesizing alkyl bromides to hydrocarbon products, such as high molecular weight hydrocarbons, olefins or mixtures thereof, wherein one or more streams of alkyl bromides may be synthesized in sequential or concurrent stages at different temperatures. The catalyst used in the synthesis stages may be the same or different and at least in one instance is chosen to form hydrocarbon products having a significant C6+ paraffin content. The stages may be conducted in one or more reactors and the catalyst may be deployed in fixed beds or fluidized beds.
Claims24
A process comprising:
- providing alkyl bromides;
- reacting at least a first portion of the alkyl bromides in the presence of a first catalyst and at a first temperature sufficient to form a first hydrocarbon product containing at least hydrocarbons having at least 5 carbon atoms and having a substantial C6+ paraffin content;
- and
- reacting at least a second portion of the alkyl bromides in the presence of a second catalyst and at a second temperature sufficient to form a second hydrocarbon product containing at least hydrocarbons having at least 5 carbon atoms and having a substantial substituted aromatic content.
1 more element
A process comprising:
- providing a first feed gas stream containing lower molecular weight alkanes and having from about 0.1 mol % to about 10.0 mol % C2+ components;
- reacting bromine with the first feed gas stream to form first alkyl bromides;
- reacting at least the first alkyl bromides in the presence of a first catalyst and at a first temperature sufficient to form a first hydrocarbon product containing at least hydrocarbons having at least 5 carbon atoms and having a substantial C6+ paraffin content;
- providing a second feed gas stream containing lower molecular weight alkanes and having predominately C2+ components;
- reacting bromine with the second feed gas stream to form second alkyl bromides;
- and
- reacting at least the second alkyl bromides in the presence of a second catalyst and at a second temperature sufficient to form a second hydrocarbon product containing at least hydrocarbons having at least 5 carbon atoms and having a substantial substituted aromatic content.
4 more elements
A system comprising:
- a first synthesis zone containing a suitable catalyst and configured to form at a first temperature hydrocarbon products containing paraffins from synthesis reactants comprising alkyl bromides;
- and
- a second synthesis zone in fluid communication with the first synthesis zone, containing a second suitable catalyst and configured to form at a second temperature hydrocarbon products containing substituted aromatics from synthesis reactants comprising a unreacted portion of the alkyl bromides.
A system comprising:
- a first bromination reactor configured to form first bromination products comprising alkyl bromides from first bromination reactants comprising lower molecular weight alkanes having from about 0.1 mol % to about 10.0 mol % C2+ components;
- a first synthesis reactor in fluid communication with the first bromination reactor, containing a suitable catalyst and configured to form hydrocarbon products containing paraffins from the first bromination products;
- a second bromination reactor configured to form second bromination products comprising alkyl bromides from second bromination reactants comprising lower molecular weight alkanes containing predominately C2+ components;
- a second synthesis reactor in fluid communication with the second bromination reactor, containing a suitable catalyst and configured to form hydrocarbon products containing substituted aromatics from the first bromination products, said second synthesis reactor being operated at a higher temperature than the first bromination reactor.
1 more element
Dependencies are inferred from the claim text.