Patents by Inventor David A. Slade
David A. Slade has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12275906Abstract: The invention relates to renewable hydrocarbons, and more particularly to biomass-based diesel fuel produced in a process including hydrodeoxygenation (HDO) of phenolic lipids. The process may generally include combining a phenolic lipid and a hydrocarbon diluent to provide a hydrocarbon-diluted phenolic lipid then subjecting the hydrocarbon-diluted phenolic lipid to hydrodeoxygenation in a reactor to provide a reactor effluent including a hydrodeoxygenated phenolic lipid. The hydrodeoxygenated phenolic lipid is separated from the reactor effluent.Type: GrantFiled: September 29, 2023Date of Patent: April 15, 2025Assignee: Renewable Energy Group, Inc.Inventors: Jared Brown, Ramin Abhari, Martin Haverly, David A. Slade, Dhananjay Ghonasgi
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Patent number: 12049593Abstract: A process for producing crude biodiesel from renewable feedstocks (such as fats, oils, and greases) containing unsaponifiable materials; purifying the crude biodiesel through a purification process; recovering a purified biodiesel distillate stream and a less volatile biodiesel residue stream; and further recovering valuable chemicals from the biodiesel residue. Specifically, the present technology relates to the concentration of valuable chemicals in the biodiesel residue product of biodiesel production and the subsequent recovery of these valuable chemicals. The process may further include the conversion of the biodiesel residue into diesel range hydrocarbons using hydrodeoxygenation and the subsequent purification of the hydrocarbon fraction produced thereby.Type: GrantFiled: July 30, 2021Date of Patent: July 30, 2024Assignee: Renewable Energy Group, Inc.Inventors: James Matthew White, David A. Slade, Martin R. Haverly, Cody J. Ellens
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Publication number: 20240218262Abstract: The present disclosure relates to biofuels, and more particularly, to biomass-based kerosene and aviation turbine fuels. In an aspect, a method is disclosed for producing a light paraffinic kerosene (LPK) where the method includes hydrotreating a biorenewable feedstock to yield a heavy hydrotreater fraction comprising C14-C24 n-paraffins; hydroisomerizing and hydrocracking the heavy hydrotreater fraction with a hydroisomerization catalyst under conditions yielding a hydroisomerizer product that includes a heavy hydroisomerizer fraction and the LPK; and separating the LPK from the hydroisomerizer product.Type: ApplicationFiled: June 1, 2022Publication date: July 4, 2024Applicant: REG SYNTHETIC FUELS, LLCInventors: Ramin Abhari, Martin Haverly, Mason Berg, David A. Slade, H. Lynn Tomlinson, Trevor Fisher
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Publication number: 20240124785Abstract: An improved method for removal of contaminants from low-value and waste fats and oils for the purpose of hydrodeoxygenation into diesel boiling range hydrocarbons. The method includes removing organically bound contaminants from fats, oils, and greases (FOG) by adding water to a contaminated FOG stream, subjecting the mixture to heat, and mixing to promote reaction between the water and the FOG. Then, separating a reacted FOG from the contaminants. The reacted FOG will result in reduced organically bound chlorine contaminants.Type: ApplicationFiled: June 9, 2023Publication date: April 18, 2024Applicant: Renewable Energy Group, Inc.Inventors: Martin Haverly, Ramin Abhari, David A. Slade, Jared Brown
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Publication number: 20240124791Abstract: The invention relates to renewable hydrocarbons, and more particularly to biomass-based diesel fuel produced in a process including hydrodeoxygenation (HDO) of phenolic lipids. The process may generally include combining a phenolic lipid and a hydrocarbon diluent to provide a hydrocarbon-diluted phenolic lipid then subjecting the hydrocarbon-diluted phenolic lipid to hydrodeoxygenation in a reactor to provide a reactor effluent including a hydrodeoxygenated phenolic lipid. The hydrodeoxygenated phenolic lipid is separated from the reactor effluent.Type: ApplicationFiled: September 29, 2023Publication date: April 18, 2024Applicant: Renewable Energy Group, Inc.Inventors: Jared Brown, Ramin Abhari, Martin Haverly, David A. Slade, Dhananjay Ghonasgi
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Publication number: 20240076575Abstract: Methods and apparatus for economically producing a biodiesel product from feedstocks. Some embodiments comprise using at least one of a crude feedstock pretreatment process and a free fatty acid refining process prior to transesterification and the formation of crude biodiesel and glycerin. The free fatty acid refining process may include introducing the feedstock to glycerolysis to obtain a glycerolysis product then stripping the glycerolysis product to produce a fatty acid distillate and a stripped feedstock. The fatty acid distillate is recycled to the glycerolysis process to create more higher-molecular weight glycerides and the stripped feedstock (mostly di- and tri-glycerides) proceeds to transesterification to make biodiesel.Type: ApplicationFiled: August 23, 2023Publication date: March 7, 2024Applicant: Renewable Energy Group, Inc.Inventors: Martin Haverly, David A. Slade, Jared Downey
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Publication number: 20230399572Abstract: The present invention relates to an improved process for treating lipid feedstocks such as spent vegetable oils and low-value animal fats for biofuel production. In particular, the invention relates to methods for providing an advantageous feedstock for production of hydrocarbon biofuels via hydrodeoxygenation.Type: ApplicationFiled: June 9, 2023Publication date: December 14, 2023Applicant: Renewable Energy Group, Inc.Inventors: Martin Haverly, Ramin Abhari, David A. Slade
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Publication number: 20230303948Abstract: The present technology provides a method that includes contacting a composition with a caustic solution to produce a caustic-treated composition; combining the caustic-treated composition with silica particles to produce a slurry; and removing the silica particles from the slurry to produce a treated composition; wherein the composition includes one or more of animal fats, animal oils, plant fats, plant oils, vegetable fats, vegetable oils, greases, and used cooking oil and the composition includes: at least about 10 wppm of total metals, at least about 8 wppm of phosphorus, at least about 10 wppm of chlorine, at least about 10 wppm of sulfur, at least about 20 wppm of nitrogen, at least about 5 wt.% of free fatty acids; and has an acid number from about 10 mg KOH/g to about 150 mg KOH/g, and the silica particles has a particle size from about 10 microns to about 50 microns, a BET surface area from about 200 m2/g to about 1000 m2/g.Type: ApplicationFiled: April 12, 2023Publication date: September 28, 2023Applicant: REG SYNTHETIC FUELS, LLCInventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
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Publication number: 20230235234Abstract: The present technology relates to hydrocarbon fuels comprising renewable content. More particularly, the technology relates to manufacture of renewable diesel for potential use as aviation turbine fuel blendstock.Type: ApplicationFiled: March 28, 2023Publication date: July 27, 2023Inventors: Ramin Abhari, Nathan McMullen, David A. Slade, Nate Green
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Patent number: 11655431Abstract: The present technology provides a method that includes contacting a composition with a caustic solution to produce a caustic-treated composition; combining the caustic-treated composition with silica particles to produce a slurry; and removing the silica particles from the slurry to produce a treated composition; wherein the composition includes one or more of animal fats, animal oils, plant fats, plant oils, vegetable fats, vegetable oils, greases, and used cooking oil and the composition includes: at least about 10 wppm of total metals, at least about 8 wppm of phosphorus, at least about 10 wppm of chlorine, at least about 10 wppm of sulfur, at least about 20 wppm of nitrogen, at least about 5 wt. % of free fatty acids; and has an acid number from about 10 mg KOH/g to about 150 mg KOH/g, and the silica particles has a particle size from about 10 microns to about 50 microns, a BET surface area from about 200 m2/g to about 1000 m2/g.Type: GrantFiled: August 18, 2021Date of Patent: May 23, 2023Assignee: REG Synthetic Fuels, LLCInventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
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Patent number: 11639473Abstract: The present technology relates to hydrocarbon fuels comprising renewable content. More particularly, the technology relates to manufacture of renewable diesel for potential use as aviation turbine fuel blendstock.Type: GrantFiled: October 2, 2019Date of Patent: May 2, 2023Assignee: REG Synthetic Fuels, LLCInventors: Ramin Abhari, Nathan McMullen, David A. Slade, Nate Green
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Patent number: 11236280Abstract: The present technology provides compositions that include at least about 98 weight percent (“wt %”) n-paraffins which, among other surprising features, may be suitable for use as a diesel fuel, an aviation fuel, a jet fuel blendstock, a blendstock to reduce the cloud point of a diesel fuel, a fuel for portable heaters, and/or as a charcoal lighter fluid. The composition includes at least about 98 wt % C7-C12 n-paraffins, where at least about 10 wt % of composition includes n-decane, at least about 20 wt % of the composition includes n-dodecane, and at least about 75 wt % of the composition includes even carbon number paraffins. The composition also includes less about 0.1 wt % oxygenates and less than about 0.1 wt % aromatics. The composition may be produced by a process that includes hydrotreating a biorenewable feedstock comprising at least one of palm kernel oil, coconut oil, babassu oil, microbial oil, or algal oil.Type: GrantFiled: May 11, 2021Date of Patent: February 1, 2022Assignee: REG SYNTHETIC FUELS, LLCInventors: Ramin Abhari, David A. Slade, H. Lynn Tomlinson, Erik Ashby, Nate Green, Caroline Golden
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Publication number: 20210371771Abstract: The present technology provides a method that includes contacting a composition with a caustic solution to produce a caustic-treated composition; combining the caustic-treated composition with silica particles to produce a slurry; and removing the silica particles from the slurry to produce a treated composition; wherein the composition includes one or more of animal fats, animal oils, plant fats, plant oils, vegetable fats, vegetable oils, greases, and used cooking oil and the composition includes: at least about 10 wppm of total metals, at least about 8 wppm of phosphorus, at least about 10 wppm of chlorine, at least about 10 wppm of sulfur, at least about 20 wppm of nitrogen, at least about 5 wt. % of free fatty acids; and has an acid number from about 10 mg KOH/g to about 150 mg KOH/g, and the silica particles has a particle size from about 10 microns to about 50 microns, a BET surface area from about 200 m2/g to about 1000 m2/g.Type: ApplicationFiled: August 18, 2021Publication date: December 2, 2021Applicant: REG SYNTHETIC FUELS, LLCInventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
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Publication number: 20210371755Abstract: The present technology relates to hydrocarbon fuels comprising renewable content. More particularly, the technology relates to manufacture of renewable diesel for potential use as aviation turbine fuel blendstock.Type: ApplicationFiled: October 2, 2019Publication date: December 2, 2021Inventors: Ramin Abhari, Nathan McMullen, David A. Slade, Nate Green
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Publication number: 20210363431Abstract: A process for producing crude biodiesel from renewable feedstocks (such as fats, oils, and greases) containing unsaponifiable materials; purifying the crude biodiesel through a purification process; recovering a purified biodiesel distillate stream and a less volatile biodiesel residue stream; and further recovering valuable chemicals from the biodiesel residue. Specifically, the present technology relates to the concentration of valuable chemicals in the biodiesel residue product of biodiesel production and the subsequent recovery of these valuable chemicals. The process may further include the conversion of the biodiesel residue into diesel range hydrocarbons using hydrodeoxygenation and the subsequent purification of the hydrocarbon fraction produced thereby.Type: ApplicationFiled: July 30, 2021Publication date: November 25, 2021Applicant: Renewable Energy Group, Inc.Inventors: James Matthew White, David A. Slade, Martin R. Haverly, Cody J. Ellens
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Publication number: 20210348062Abstract: The present technology provides a method to produce hydrocarbon renewable fuels. The method includes hydrodeoxygenating a feed to produce a hydrocarbon product, where the feed includes fatty alcohols and the hydrocarbon product includes C10-C12 n-paraffins and a heteroatom oxygen content less than 0.1 wt %.Type: ApplicationFiled: October 16, 2019Publication date: November 11, 2021Inventors: David A. Slade, Matt Herman, Martin Haverly, Ramin Abhari
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Patent number: 11118133Abstract: The present technology provides a method that includes contacting a composition with a caustic solution to produce a caustic-treated composition; combining the caustic-treated composition with silica particles to produce a slurry; and removing the silica particles from the slurry to produce a treated composition; wherein the composition includes one or more of animal fats, animal oils, plant fats, plant oils, vegetable fats, vegetable oils, greases, and used cooking oil and the composition includes: at least about 10 wppm of total metals, at least about 8 wppm of phosphorus, at least about 10 wppm of chlorine, at least about 10 wppm of sulfur, at least about 20 wppm of nitrogen, at least about 5 wt. % of free fatty acids; and has an acid number from about 10 mg KOH/g to about 150 mg KOH/g, and the silica particles has a particle size from about 10 microns to about 50 microns, a BET surface area from about 200 m2/g to about 1000 m2/g.Type: GrantFiled: April 30, 2019Date of Patent: September 14, 2021Assignee: REG SYNTHETIC FUELS, LLCInventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
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Publication number: 20210261875Abstract: The present technology provides compositions that include at least about 98 weight percent (“wt %”) n-paraffins which, among other surprising features, may be suitable for use as a diesel fuel, an aviation fuel, a jet fuel blendstock, a blendstock to reduce the cloud point of a diesel fuel, a fuel for portable heaters, and/or as a charcoal lighter fluid. The composition includes at least about 98 wt % C7-C12 n-paraffins, where at least about 10 wt % of composition includes n-decane, at least about 20 wt % of the composition includes n-dodecane, and at least about 75 wt % of the composition includes even carbon number paraffins. The composition also includes less about 0.1 wt % oxygenates and less than about 0.1 wt % aromatics. The composition may be produced by a process that includes hydrotreating a biorenewable feedstock comprising at least one of palm kernel oil, coconut oil, babassu oil, microbial oil, or algal oil.Type: ApplicationFiled: May 11, 2021Publication date: August 26, 2021Applicant: REG SYNTHETIC FUELS, LLCInventors: Ramin Abhari, David A. Slade, H. Lynn Tomlinson, Erik Ashby, Nate Green, Caroline Golden
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Patent number: 11078427Abstract: A process for producing crude biodiesel from renewable feedstocks (such as fats, oils, and greases) containing unsaponifiable materials; purifying the crude biodiesel through a purification process; recovering a purified biodiesel distillate stream and a less volatile biodiesel residue stream; and further recovering valuable chemicals from the biodiesel residue. Specifically, the present technology relates to the concentration of valuable chemicals in the biodiesel residue product of biodiesel production and the subsequent recovery of these valuable chemicals. The process may further include the conversion of the biodiesel residue into diesel range hydrocarbons using hydrodeoxygenation and the subsequent purification of the hydrocarbon fraction produced thereby.Type: GrantFiled: May 1, 2019Date of Patent: August 3, 2021Assignee: Renewable Energy Group, Inc.Inventors: James Matthew White, David A. Slade, Martin R. Haverly, Ramin Abhari, Cody J. Ellens
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Patent number: 11001774Abstract: The present technology provides compositions that include at least about 98 weight percent (“wt %”) n-paraffins which, among other surprising features, may be suitable for use as a diesel fuel, an aviation fuel, a jet fuel blendstock, a blendstock to reduce the cloud point of a diesel fuel, a fuel for portable heaters, and/or as a charcoal lighter fluid. The composition includes at least about 98 wt % C7-C12 n-paraffins, where at least about 10 wt % of composition includes n-decane, at least about 20 wt % of the composition includes n-dodecane, and at least about 75 wt % of the composition includes even carbon number paraffins. The composition also includes less about 0.1 wt % oxygenates and less than about 0.1 wt % aromatics. The composition may be produced by a process that includes hydrotreating a biorenewable feedstock comprising at least one of palm kernel oil, coconut oil, babassu oil, microbial oil, or algal oil.Type: GrantFiled: February 25, 2019Date of Patent: May 11, 2021Assignee: REG SYNTHETIC FUELS, LLCInventors: Ramin Abhari, David A. Slade, H. Lynn Tomlinson, Erik Ashby, Nate Green, Caroline Golden