Process for converting gaseous alkanes to liquid hydrocarbons
AssigneeMarathon Oil Company
InventorJohn J. Waycuilis
Life of this patent
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Abstract
A process for converting gaseous alkanes to liquid hydrocarbons wherein a gaseous feed containing alkanes is reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid are then reacted over a synthetic crystalline alumino-silicate catalyst, such as a ZSM-5 zeolite, at a temperature of from about 150° C. to about 400° C. so as to form higher molecular weight hydrocarbons and hydrobromic acid vapor. Hydrobromic acid vapor is removed from the higher molecular weight hydrocarbons. A portion of the propane and butane is removed from the higher molecular weight hydrocarbons and reacted with the mixture of alkyl bromides and hydrobromic acid over the synthetic crystalline alumino-silicate catalyst to form C5+ hydrocarbons.
Claims28
A process for converting gaseous alkanes to liquid hydrocarbons comprising:
- reacting a gaseous feed having lower molecular weight alkanes with bromine vapor to form alkyl bromides and hydrobromic acid;
- and
- reacting said alkyl bromides in the presence of said hydrobromic acid and a catalyst consisting essentially of a synthetic crystalline alumino-silicate catalyst and at a temperature sufficient to form higher molecular weight hydrocarbons and additional hydrobromic acid.
A process for converting gaseous lower molecular weight alkanes to liquid hydrocarbons comprising:
- reacting a gaseous feed containing lower molecular weight alkanes with bromine vapor to form alkyl bromides and hydrobromic acid:
- reacting said alkyl bromides in the presence of a synthetic crystalline alumino-silicate catalyst and hydrobromic acid to form higher molecular weight hydrocarbons and additional hydrobromic acid;
- and
- contacting said hydrobromic acid, said additional hydrobromic acid, and said higher molecular weight hydrocarbons wDth water to remove said hydrobromic acid and additional hydrobromic acid from said higher molecular weight hydrocarbons.
A process for converting gaseous alkanes to liquid hydrocarbons comprising:
- introducing a mixture comprising lower molecular weight gaseous alkanes and bromine vapor to a first reactor;
- withdrawing alkyl bromides and hydrobromic acid from said first reactor;
- introducing said alkyl bromides and said hydrobromic acid into a second reactor containing a synthetic crystalline alumino-silicate catalyst;
- and
- withdrawing an effluent comprising higher molecular weight hydrocarbons and said hydrobromic acid from said second reactor.
Dependencies are inferred from the claim text.