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US 8,282,810 B2Granted
Bromine-based method and system for converting gaseous alkanes to liquid hydrocarbons using electrolysis for bromine recovery
AssigneeMarathon Gtf Technology, Ltd.
InventorJohn J. Waycuilis
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Abstract
A variety of methods and systems are disclosed herein, including, in one embodiment, a method comprising: providing a stream comprising halogenated alkanes; forming synthesis products comprising hydrocarbons and hydrogen bromide from synthesis reactants comprising at least a portion of the halogenated alkanes; and recovering at least a portion of the bromine, the recovering comprising electrolysis.
Claims30
A method comprising:
- providing a stream comprising halogenated alkanes;
- forming synthesis products comprising hydrocarbons and hydrogen bromide from synthesis reactants comprising at least a portion of the halogenated alkanes;
- separating the synthesis products into at least a liquid product stream comprising C5+ hydrocarbons and a vapor stream comprising hydrogen bromide and methane;
- and
- recovering bromine from the hydrogen bromide in an electrolysis unit.
2 more elements
A method comprising:
- forming synthesis products comprising hydrocarbons and hydrogen bromide from synthesis reactants comprising brominated alkanes;
- separating the synthesis products into at least a liquid product stream comprising C5+ hydrocarbons and a vapor stream comprising hydrogen bromide and methane;
- and
- converting at least a portion of the hydrogen bromide to at least molecular bromine using as phase electrolysis;
- providing a stream comprising hydrocarbons;
- and
- forming bromination products by reacting at least a portion of the molecular bromine with at least a portion of the hydrocarbons.
4 more elements
A method comprising:
- reacting at least a gaseous feed stream comprising lower molecular weight hydrocarbons with bromine in a bromination reactor to form at least hydrogen bromide and brominated alkanes;
- reacting at least a portion of the brominated alkanes in the presence of synthetic crystalline alumino-silicate catalyst in a synthesis reactor to form at least product hydrocarbons comprising hydrocarbons having three or more carbons and additional hydrogen bromide;
- feeding at least a portion of the product hydrocarbons and the additional hydrogen bromide from the synthesis reactor to a product recovery unit;
- recovering a liquid product stream from the product recovery unit, the liquid product stream comprising hydrocarbons having five or more hydrocarbons;
- recovering a vapor stream from the product recovery unit, the vapor stream comprising hydrogen bromide;
- and
- converting at least a portion of the hydrogen bromide from the vapor stream to at least molecular bromine using a gas phase electrolysis unit.
4 more elements
Dependencies are inferred from the claim text.