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).

  • Patent number: 12275906
    Abstract: 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: Grant
    Filed: September 29, 2023
    Date of Patent: April 15, 2025
    Assignee: Renewable Energy Group, Inc.
    Inventors: Jared Brown, Ramin Abhari, Martin Haverly, David A. Slade, Dhananjay Ghonasgi
  • Patent number: 12049593
    Abstract: 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: Grant
    Filed: July 30, 2021
    Date of Patent: July 30, 2024
    Assignee: Renewable Energy Group, Inc.
    Inventors: James Matthew White, David A. Slade, Martin R. Haverly, Cody J. Ellens
  • Publication number: 20240218262
    Abstract: 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: Application
    Filed: June 1, 2022
    Publication date: July 4, 2024
    Applicant: REG SYNTHETIC FUELS, LLC
    Inventors: Ramin Abhari, Martin Haverly, Mason Berg, David A. Slade, H. Lynn Tomlinson, Trevor Fisher
  • Publication number: 20240124785
    Abstract: 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: Application
    Filed: June 9, 2023
    Publication date: April 18, 2024
    Applicant: Renewable Energy Group, Inc.
    Inventors: Martin Haverly, Ramin Abhari, David A. Slade, Jared Brown
  • Publication number: 20240124791
    Abstract: 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: Application
    Filed: September 29, 2023
    Publication date: April 18, 2024
    Applicant: Renewable Energy Group, Inc.
    Inventors: Jared Brown, Ramin Abhari, Martin Haverly, David A. Slade, Dhananjay Ghonasgi
  • Publication number: 20240076575
    Abstract: 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: Application
    Filed: August 23, 2023
    Publication date: March 7, 2024
    Applicant: Renewable Energy Group, Inc.
    Inventors: Martin Haverly, David A. Slade, Jared Downey
  • Publication number: 20230399572
    Abstract: 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: Application
    Filed: June 9, 2023
    Publication date: December 14, 2023
    Applicant: Renewable Energy Group, Inc.
    Inventors: Martin Haverly, Ramin Abhari, David A. Slade
  • Publication number: 20230303948
    Abstract: 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: Application
    Filed: April 12, 2023
    Publication date: September 28, 2023
    Applicant: REG SYNTHETIC FUELS, LLC
    Inventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
  • Publication number: 20230235234
    Abstract: 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: Application
    Filed: March 28, 2023
    Publication date: July 27, 2023
    Inventors: Ramin Abhari, Nathan McMullen, David A. Slade, Nate Green
  • Patent number: 11655431
    Abstract: 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: Grant
    Filed: August 18, 2021
    Date of Patent: May 23, 2023
    Assignee: REG Synthetic Fuels, LLC
    Inventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
  • Patent number: 11639473
    Abstract: 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: Grant
    Filed: October 2, 2019
    Date of Patent: May 2, 2023
    Assignee: REG Synthetic Fuels, LLC
    Inventors: Ramin Abhari, Nathan McMullen, David A. Slade, Nate Green
  • Patent number: 11236280
    Abstract: 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: Grant
    Filed: May 11, 2021
    Date of Patent: February 1, 2022
    Assignee: REG SYNTHETIC FUELS, LLC
    Inventors: Ramin Abhari, David A. Slade, H. Lynn Tomlinson, Erik Ashby, Nate Green, Caroline Golden
  • Publication number: 20210371771
    Abstract: 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: Application
    Filed: August 18, 2021
    Publication date: December 2, 2021
    Applicant: REG SYNTHETIC FUELS, LLC
    Inventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
  • Publication number: 20210371755
    Abstract: 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: Application
    Filed: October 2, 2019
    Publication date: December 2, 2021
    Inventors: Ramin Abhari, Nathan McMullen, David A. Slade, Nate Green
  • Publication number: 20210363431
    Abstract: 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: Application
    Filed: July 30, 2021
    Publication date: November 25, 2021
    Applicant: Renewable Energy Group, Inc.
    Inventors: James Matthew White, David A. Slade, Martin R. Haverly, Cody J. Ellens
  • Publication number: 20210348062
    Abstract: 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: Application
    Filed: October 16, 2019
    Publication date: November 11, 2021
    Inventors: David A. Slade, Matt Herman, Martin Haverly, Ramin Abhari
  • Patent number: 11118133
    Abstract: 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: Grant
    Filed: April 30, 2019
    Date of Patent: September 14, 2021
    Assignee: REG SYNTHETIC FUELS, LLC
    Inventors: David A. Slade, Ramin Abhari, Martin Haverly, Peter Z. Havlik
  • Publication number: 20210261875
    Abstract: 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: Application
    Filed: May 11, 2021
    Publication date: August 26, 2021
    Applicant: REG SYNTHETIC FUELS, LLC
    Inventors: Ramin Abhari, David A. Slade, H. Lynn Tomlinson, Erik Ashby, Nate Green, Caroline Golden
  • Patent number: 11078427
    Abstract: 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: Grant
    Filed: May 1, 2019
    Date of Patent: August 3, 2021
    Assignee: Renewable Energy Group, Inc.
    Inventors: James Matthew White, David A. Slade, Martin R. Haverly, Ramin Abhari, Cody J. Ellens
  • Patent number: 11001774
    Abstract: 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: Grant
    Filed: February 25, 2019
    Date of Patent: May 11, 2021
    Assignee: REG SYNTHETIC FUELS, LLC
    Inventors: Ramin Abhari, David A. Slade, H. Lynn Tomlinson, Erik Ashby, Nate Green, Caroline Golden