Patents Assigned to Marathon GTF Technology, Ltd.
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Publication number: 20140286853Abstract: Processes and systems for recovering bromine. A process may comprise contacting a gas stream comprising bromine with a liquid bromide stream comprising bromide anions to produce at least an off-gas stream that is substantially bromine free and a liquid stream comprising bromine anionic complexes; and heating at least a portion of the liquid stream to produce at least bromine from at least a portion of the bromine anionic complexes.Type: ApplicationFiled: March 17, 2014Publication date: September 25, 2014Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: John J. Waycuilis
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Patent number: 8815050Abstract: Processes and systems for drying liquid bromine utilizing two fractionators to produce a substantially dry liquid bromine stream and a substantially bromine-free water stream. Wet bromine liquid may be conveyed to a first fractionator wherein a substantially dry bromine liquid is produced, while a vapor stream from the first fractionator may be condensed into a first liquid phase comprising bromine saturated with water and a second liquid phase comprising water saturated with bromine. The water saturated with bromine may be conveyed to a second fractionator to produce at least substantially bromine-free water.Type: GrantFiled: March 22, 2011Date of Patent: August 26, 2014Assignee: Marathon GTF Technology, Ltd.Inventors: Sabah A. Kurukchi, Yijun Liu, Anand Moodley
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Publication number: 20140228603Abstract: Embodiments disclose a process for converting gaseous alkanes to higher molecular weight hydrocarbons, olefins or mixtures thereofs wherein a gaseous feed containing alkanes may be reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid then may be reacted over a synthetic crystalline alumino-silicate catalyst, such as a ZSM-5 or an X or Y type zeolite, at a temperature of from about 250° C. to about 500° C. so as to form hydrobromic acid vapor and higher molecular weight hydrocarbons, olefins or mixtures thereof. Various methods are disclosed to remove the hydrobromic acid vapor from the higher molecular weight hydrocarbons, olefins or mixtures thereof and to generate bromine from the hydrobromic acid for use in the process.Type: ApplicationFiled: April 17, 2014Publication date: August 14, 2014Applicant: Marathon GTF Technology, Ltd.Inventor: John J. Waycuilis
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Patent number: 8802908Abstract: Process and systems for alkane bromination and, in one or more embodiments, to separate, parallel methane and higher alkanes bromination in a bromine-based process. An embodiment discloses a bromine-based process for converting alkanes to liquid hydrocarbons that includes alkanes bromination, the process comprising: brominating a methane stream comprising methane and having less than about 2 mol % of ethane to form methane bromination products comprising brominated methane and a first fraction of hydrogen bromide; separately brominating a C2+ alkane stream comprising an alkane having 2 or more carbon atoms to form C2+ methane bromination products comprising brominated alkanes having 2 or more carbon atoms and a second fraction of hydrogen bromide; and catalytically reacting at least a portion of the brominated methane and the brominated alkanes to form higher molecular hydrocarbons.Type: GrantFiled: October 8, 2012Date of Patent: August 12, 2014Assignee: Marathon GTF Technology, Ltd.Inventors: John J. Waycullis, Sagar B. Gadewar, Raphael Thomas
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Patent number: 8642822Abstract: A process for converting gaseous alkanes to olefins, higher molecular weight hydrocarbons or mixtures thereof wherein a gaseous feed containing alkanes may be thermally or catalytically reacted with a dry bromine vapor to form alkyl bromides and hydrogen bromide. Poly-brominated alkanes present in the alkyl bromides may be further reacted with methane over a suitable catalyst to form mono-brominated species. The mixture of alkyl bromides and hydrogen bromide may then be reacted over a suitable catalyst at a temperature sufficient to form olefins, higher molecular weight hydrocarbons or mixtures thereof and hydrogen bromide. Various methods and reactions are disclosed to remove the hydrogen bromide from the higher molecular weight hydrocarbons, to generate bromine from the hydrogen bromide for use in the process, to store and subsequently release bromine for use in the process, and to selectively form mono-brominated alkanes in the bromination step.Type: GrantFiled: May 27, 2011Date of Patent: February 4, 2014Assignee: Marathon GTF Technology, Ltd.Inventors: Raymond T. Brickey, Greg A. Lisewsky, John J. Waycuilis, Stephen D. York
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Publication number: 20130217938Abstract: Processes for forming carbon disulfide from a gas stream containing hydrogen sulfide. A gaseous stream comprising lower molecular weight alkanes and hydrogen sulfide may be contacted with sufficient bromine at a temperature of from about 250° C. to about 530° C. to convert substantially all of said hydrogen sulfide to carbon disulfide. The gaseous stream may contain from about 0.001 to about 20 mol % hydrogen sulfide. The molar ratio of bromine to hydrogen sulfide may be about 2:1.Type: ApplicationFiled: February 6, 2013Publication date: August 22, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: Marathon GTF Technology, Ltd.
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Publication number: 20130178675Abstract: A method is provided for vaporizing a liquid elemental halogen. A heating gas is preheated in the absence of halogen to a preheat temperature which results in a preheated heating gas. The preheated heating gas is directly contacted with a feed of a liquid elemental halogen and heats the feed to a vaporizing temperature sufficient to vaporize at least a portion of the feed to a quantity of an elemental halogen vapor. A gas mixture results which includes the heating gas and the quantity of the elemental halogen vapor.Type: ApplicationFiled: January 3, 2013Publication date: July 11, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: MARATHON GTF TECHNOLOGY, LTD.
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Publication number: 20130156681Abstract: Processes and systems that include use of a packed wet oxidation reactor for oxidizing aqueous metal bromide salts in a bromine-based process for converting lower molecular weight alkanes to higher molecular weight hydrocarbons. A stream comprising a dissolved metal bromide salt may be oxidized in a wet oxidation reactor comprising a packed section to produce at least a partially oxidized liquid stream comprising oxidized products of the metal bromide salt and a gaseous bromine stream comprising elemental bromine.Type: ApplicationFiled: December 4, 2012Publication date: June 20, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: Marathon GTF Technology, Ltd.
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Publication number: 20130158324Abstract: Process and system that include the conversion of alkyl bromides to higher molecular weight hydrocarbons in circulating catalyst reactor-regenerator systems. Alkyl bromides may be reacted over a catalyst in at least one conversion reactor to produce at least an effluent stream comprising higher molecular weight hydrocarbons and hydrogen bromide. A portion of the catalyst may be removed from the conversion reactor. The portion of the catalyst may be contacted with a stripping gas to displace hydrocarbons from the portion of the catalyst. The portion of the catalyst may be contacted a first inert gas. The portion of the catalyst may be contacted with oxygen to form a regenerated catalyst by removal of coke. The regenerated catalyst may be contacted with a second inert gas. At least a portion of the regenerated catalyst may be introduced into the conversion reactor.Type: ApplicationFiled: December 4, 2012Publication date: June 20, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: Marathon GTF Technology, Ltd.
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Patent number: 8436220Abstract: Process and systems for converting lower molecular weight alkanes to higher molecular weight hydrocarbons that include demethanization of brominated hydrocarbons, wherein the brominated hydrocarbons are formed by reaction of the lower molecular weight alkanes with bromine.Type: GrantFiled: June 10, 2011Date of Patent: May 7, 2013Assignee: Marathon GTF Technology, Ltd.Inventors: Sabah A. Kurukchi, Yijun Liu, Anand Moodley
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Publication number: 20130102820Abstract: Processes and systems for synthesizing hydrocarbon products, such as high molecular weight hydrocarbons, olefins or mixtures thereof, from alkyl bromides wherein one or more streams of alkyl bromides may be reacted 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.Type: ApplicationFiled: December 13, 2012Publication date: April 25, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: MARATHON GTF TECHNOLOGY, LTD.
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Publication number: 20130102821Abstract: Process and systems for alkane bromination and, in one or more embodiments, to separate, parallel methane and higher alkanes bromination in a bromine-based process. An embodiment discloses a bromine-based process for converting alkanes to liquid hydrocarbons that includes alkanes bromination, the process comprising: brominating a methane stream comprising methane and having less than about 2 mol % of ethane to form methane bromination products comprising brominated methane and a first fraction of hydrogen bromide; separately brominating a C2+ alkane stream comprising an alkane having 2 or more carbon atoms to form C2+ methane bromination products comprising brominated alkanes having 2 or more carbon atoms and a second fraction of hydrogen bromide; and catalytically reacting at least a portion of the brominated methane and the brominated alkanes to form higher molecular hydrocarbons.Type: ApplicationFiled: October 8, 2012Publication date: April 25, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: MARATHON GTF TECHNOLOGY, LTD.
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Publication number: 20130079564Abstract: Embodiments disclose a process for converting gaseous alkanes to higher molecular weight hydrocarbons, olefins or mixtures thereof wherein a gaseous feed containing alkanes may be reacted with a dry bromine vapor to form alkyl bromides and hydrobromic acid vapor. The mixture of alkyl bromides and hydrobromic acid then may be reacted over a synthetic crystalline alumino-silicate catalyst, such as a ZSM-5 or an X or Y type zeolite, at a temperature of from about 250° C. to about 500° C. so as to form hydrobromic acid vapor and higher molecular weight hydrocarbons, olefins or mixtures thereof. Various methods are disclosed to remove the hydrobromic acid vapor from the higher molecular weight hydrocarbons, olefins or mixtures thereof and to generate bromine from the hydrobromic acid for use in the process.Type: ApplicationFiled: November 16, 2012Publication date: March 28, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventor: Marathon GTF Technology, Ltd.
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Publication number: 20130046121Abstract: Process and systems for converting lower molecular weight alkanes to higher molecular weight hydrocarbons that include recovery of residual halogenated hydrocarbons (e.g., CH3Br) from higher molecular weight hydrocarbon products.Type: ApplicationFiled: August 18, 2011Publication date: February 21, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventors: Sabah A. Kurukchi, Yijun Liu, Anand Moodley
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Patent number: 8367884Abstract: Processes and systems for synthesizing hydrocarbon products, such as high molecular weight hydrocarbons, olefins or mixtures thereof, from alkyl bromides wherein one or more streams of alkyl bromides may be reacted 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.Type: GrantFiled: February 17, 2011Date of Patent: February 5, 2013Assignee: Marathon GTF Technology, Ltd.Inventor: John J Waycuilis
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Publication number: 20130006024Abstract: Process and systems for converting lower molecular weight alkanes to higher molecular weight hydrocarbons that include fractionation of brominated hydrocarbons, wherein the brominated hydrocarbons are formed by reaction of the lower molecular weight alkanes with bromine.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventors: Sabah A. Kurukchi, Yijun Liu
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Publication number: 20120313034Abstract: Process and systems for converting lower molecular weight alkanes to higher molecular weight hydrocarbons that include demethanization of brominated hydrocarbons, wherein the brominated hydrocarbons are formed by reaction of the lower molecular weight alkanes with bromine.Type: ApplicationFiled: June 10, 2011Publication date: December 13, 2012Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventors: Sabah A. Kurukchi, Yijun Liu, Anand Moodley
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Patent number: 8282810Abstract: 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.Type: GrantFiled: June 3, 2009Date of Patent: October 9, 2012Assignee: Marathon GTF Technology, Ltd.Inventor: John J. Waycuilis
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Publication number: 20120245399Abstract: Processes and systems for drying liquid bromine utilizing two fractionators to produce a substantially dry liquid bromine stream and a substantially bromine-free water stream. Wet bromine liquid may be conveyed to a first fractionator wherein a substantially dry bromine liquid is produced, while a vapor stream from the first fractionator may be condensed into a first liquid phase comprising bromine saturated with water and a second liquid phase comprising water saturated with bromine. The water saturated with bromine may be conveyed to a second fractionator to produce at least substantially bromine-free water.Type: ApplicationFiled: March 22, 2011Publication date: September 27, 2012Applicant: MARATHON GTF TECHNOLOGY, LTD.Inventors: Sabah A. Kurukchi, Yijun Liu, Anand Moodley
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Patent number: 8232441Abstract: 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 450° C. so as to form higher molecular weight hydrocarbons and hydrobromic acid vapor. Propane and butane which comprise a portion of the products may be recovered or recycled back through the process to form additional C5+ hydrocarbons. Various methods are disclosed to remove the hydrobromic acid vapor from the higher molecular weight hydrocarbons and to generate bromine from the hydrobromic acid for use in the process.Type: GrantFiled: July 13, 2009Date of Patent: July 31, 2012Assignee: Marathon GTF Technology, Ltd.Inventor: John J. Waycuilis