Patents Assigned to Midwest Energy Emission Corp
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Patent number: 10987623Abstract: Various embodiments disclosed relate to sorbents for the oxidation and removal of mercury. The present invention includes removing mercury from a mercury-containing gas using a halide-promoted and optionally ammonium-protected sorbent that can include carbon sorbent, non-carbon sorbent, or a combination thereof.Type: GrantFiled: December 22, 2017Date of Patent: April 27, 2021Assignee: Midwest Energy Emission CorpInventors: John H. Pavlish, Edwin S. Olson, Michael J. Holmes
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Patent number: 10933370Abstract: A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: April 12, 2018Date of Patent: March 2, 2021Assignee: Midwest Energy Emissions CorpInventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
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Patent number: 10926218Abstract: A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: July 11, 2019Date of Patent: February 23, 2021Assignee: Midwest Energy Emissions CorpInventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
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Patent number: 10828596Abstract: Promoted ammonium salt-protected activated carbon sorbent particles for removal of mercury from gas streams. A method of separating mercury from a mercury-containing gas stream includes contacting a mercury-containing gas stream with an activated carbon sorbent including promoted ammonium salt-protected activated carbon sorbent particles, to form a mercury-sorbent composition. The method also includes separating at least some of the mercury-sorbent composition from the mercury-containing gas stream, to give a separated gas.Type: GrantFiled: December 16, 2016Date of Patent: November 10, 2020Assignee: Midwest Energy Emissions Corp.Inventors: Edwin S. Olson, John Henry Pavlish, Michael J. Holmes
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Patent number: 10668430Abstract: A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: May 8, 2018Date of Patent: June 2, 2020Assignee: Midwest Energy Emissions Corp.Inventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
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Patent number: 10596517Abstract: A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: June 4, 2018Date of Patent: March 24, 2020Assignee: Midwest Energy Emissions Corp.Inventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
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Patent number: 10589225Abstract: A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: May 14, 2015Date of Patent: March 17, 2020Assignee: Midwest Energy Emissions Corp.Inventors: Edwin S. Olson, Michael J. Holmes, John Henry Pavlish
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Patent number: 10471412Abstract: The present invention relates to activated carbon sorbents including nitrogen. In various embodiments, the present invention provides an activated carbon sorbent including a halogen- or halide-promoted activated carbon, the activated carbon sorbent particles including nitrogen in a surface layer of the sorbent particles. In various embodiments, the present invention provides a method of reducing the pollutant content in a pollutant-containing gas using the activated carbon sorbent. In various embodiments, the activated carbon sorbent can remove mercury from a mercury-containing gas that includes sulfur(VI) such as SO3 more efficiently than other sorbents.Type: GrantFiled: May 8, 2017Date of Patent: November 12, 2019Assignee: Midwest Energy Emissions Corp.Inventors: Edwin S. Olson, John Henry Pavlish
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Patent number: 10343114Abstract: A promoted carbon and/or non-carbon base sorbent are described that are highly effective for the removal of mercury from flue gas streams. The promoted sorbent comprises a carbon and/or non-carbon base sorbent that has reacted with and contains forms of halogen and halides. Optional components may be added to increase and/or preserve reactivity and mercury capacity. These may be added directly with the base sorbent, or in-flight within a gas stream (air, flue gas, etc.), to enhance base sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The promoted sorbent can be regenerated and reused. Base sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active base sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: May 14, 2018Date of Patent: July 9, 2019Assignee: Midwest Energy Emissions CorpInventors: Edwin S. Olson, Michael J. Holmes, John H. Pavlish
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Patent number: 10130930Abstract: The present invention relates to sorbents including carbon and nitrogen. In various embodiments, the sorbent can remove mercury from a mercury-containing gas that includes sulfur (VI) such as SO3 more efficiently than other sorbents. The sorbent can include a graphene edge comprising an active site for mercury oxidation and a nitrogen layer structure including cationic nitrogen atoms, neutral nitrogen atoms, or a combination thereof proximate the active site.Type: GrantFiled: March 3, 2017Date of Patent: November 20, 2018Assignee: Midwest Energy Emissions CorpInventors: Edwin S. Olson, John Henry Pavlish
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Patent number: 9757689Abstract: A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.Type: GrantFiled: June 27, 2014Date of Patent: September 12, 2017Assignee: Midwest Energy Emissions Corp.Inventors: Edwin S. Olson, Michael J. Holmes, John Henry Pavlish