Patents Assigned to S & S Lime, Inc.
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Patent number: 9566551Abstract: The present invention relates in general to a process for removing mercury from a mercury-containing flue gas using dregs from a Kraft pulp mill green liquor clarifier. The dregs are washed with water to produce a particulate carbon slurry which is activated with hydrobromic acid and injected into a mercury-containing flue gas to oxidize and adsorb the mercury at temperatures less than about 900° F. A slurry of sodium hydroxide and calcium carbonate, optionally also obtained from Kraft mill waste, is injected into the hot flue gas to absorb and remove CO2, SO2, and SO3.Type: GrantFiled: June 3, 2016Date of Patent: February 14, 2017Assignee: S&S Lime, Inc.Inventor: John C. Stuever
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Patent number: 9468900Abstract: The present invention relates in general to a method of producing activated carbon. Dregs are removed from a pulp mill green liquor clarifier and washed with an acid to produce an activated carbon. The activated carbon slurry can be used to remove mercury from a waste gas stream.Type: GrantFiled: October 30, 2014Date of Patent: October 18, 2016Assignee: S&S Lime, Inc.Inventors: John C. Stuever, Susan C. Stuever
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Publication number: 20160279568Abstract: The present invention relates in general to a process for removing mercury from a mercury-containing flue gas using dregs from a Kraft pulp mill green liquor clarifier. The dregs are washed with water to produce a particulate carbon slurry which is activated with hydrobromic acid and injected into a mercury-containing flue gas to oxidize and adsorb the mercury at temperatures less than about 900° F. A slurry of sodium hydroxide and calcium carbonate, optionally also obtained from Kraft mill waste, is injected into the hot flue gas to absorb and remove CO2, SO2, and SO3.Type: ApplicationFiled: June 3, 2016Publication date: September 29, 2016Applicant: S&S Lime, Inc.Inventor: John C. Stuever
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Publication number: 20150135953Abstract: The present invention relates in general to a method of producing activated carbon. Dregs are removed from a pulp mill green liquor clarifier and washed with an acid to produce an activated carbon. The activated carbon slurry can be used to remove mercury from a waste gas stream.Type: ApplicationFiled: October 30, 2014Publication date: May 21, 2015Applicant: S&S Lime, Inc.Inventors: John C. Stuever, Susan C. Stuever
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Publication number: 20140023575Abstract: The present invention relates in general to a method of scrubbing a waste gas, the method comprising: mixing HBr with washed dregs from a pulp mill green liquor clarifier to produce an activated carbon capable of oxidizing mercury; injecting the activated carbon slurry with HBr into a waste gas containing mercury at a temperature of from about 600° F. to about 900° F., thereby drying the activated carbon and oxidizing the mercury; and collecting the dried activated carbon and oxidized mercury on a filter.Type: ApplicationFiled: July 16, 2013Publication date: January 23, 2014Applicant: S&S Lime, Inc.Inventors: John C. Stuever, Susan C. Stuever
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Patent number: 8557731Abstract: The present invention relates in general to a method for obtaining particulate calcium carbonate and activated carbon particles and methods for using same, and more particularly, to a method for obtaining activated carbon particles having an average particle size less than about 12 microns from a pulp mill.Type: GrantFiled: September 14, 2012Date of Patent: October 15, 2013Assignee: S&S Lime, Inc.Inventors: Gary A. Olsen, John C. Stuever, Susan C. Stuever
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Patent number: 8333943Abstract: A method for obtaining particulate calcium carbonate having an average particle size less than about 12 microns is provided. The method includes the steps of (1) withdrawing from a pulp mill a mixture containing calcium carbonate; (2) treating the mixture to remove contaminants contained in the mixture to produce a treated mixture containing calcium carbonate and further having a chemical composition and/or purity which substantially inhibits the fusing together of calcium carbonate particulates; (3) recovering from the treated mixture particulate calcium carbonate having an average particle size less than about 12 microns. The calcium carbonate produced has a high surface area to volume ratio and is therefore highly reactive and suitable for numerous applications such as in the treatment of soil, filler paper production, paint production, and contaminant containment in coal stack emission assemblies.Type: GrantFiled: December 9, 2010Date of Patent: December 18, 2012Assignee: S&S Lime, Inc.Inventors: Gary Allen Olsen, John Carl Stuever, Susan Candace Stuever
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Patent number: 8288312Abstract: The present invention relates in general to a method for obtaining particulate calcium carbonate and activated carbon particles and methods for using same, and more particularly, to a method for obtaining activated carbon particles having an average particle size less than about 12 microns from a pulp mill.Type: GrantFiled: May 14, 2009Date of Patent: October 16, 2012Assignee: S&S Lime, Inc.Inventors: Gary A. Olsen, John C. Stuever, Susan C. Stuever
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Patent number: 8088199Abstract: A method for obtaining particulate calcium carbonate having an average particle size less than about 12 microns is provided. The method includes the steps of (1) withdrawing from a pulp mill a mixture containing calcium carbonate; (2) treating the mixture to remove contaminants contained in the mixture to produce a treated mixture containing calcium carbonate and further having a chemical composition and/or purity which substantially inhibits the fusing together of calcium carbonate particulates; (3) recovering from the treated mixture particulate calcium carbonate having an average particle size less than about 12 microns. The calcium carbonate produced has a high surface area to volume ratio and is therefore highly reactive and suitable for numerous applications such as in the treatment of soil, filler paper production, paint production, and contaminant containment in coal stack emission assemblies.Type: GrantFiled: July 29, 2009Date of Patent: January 3, 2012Assignee: S&S Lime, Inc.Inventors: Gary Allen Olsen, John Carl Stuever, Susan Candace Stuever
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Patent number: 6719879Abstract: A method for obtaining particulate calcium carbonate having an average particle size less than about 12 microns is provided. The method includes the steps of (1) withdrawing from a pulp mill a mixture containing calcium carbonate; (2) treating the mixture to remove contaminants contained in the mixture to produce a treated mixture containing calcium carbonate and further having a chemical composition and/or purity which substantially inhibits the fusing together of calcium carbonate particulates; (3) recovering from the treated mixture particulate calcium carbonate having an average particle size less than about 12 microns. The calcium carbonate produced has a high surface area to volume ratio and is therefore highly reactive and suitable for numerous applications such as in the treatment of soil, filler paper production, paint production, and contaminant containment in coal stack emission assemblies.Type: GrantFiled: October 24, 2002Date of Patent: April 13, 2004Assignee: S & S Lime, Inc.Inventors: Gary Allen Olsen, John Carl Stuever, Susan Candace Stuever