Patents by Inventor Timothy Edward Keister
Timothy Edward Keister 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: 9580343Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate and strontium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.Type: GrantFiled: November 3, 2014Date of Patent: February 28, 2017Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Patent number: 9227864Abstract: A method and chemical composition are provided which permit operation of evaporative cooling towers at increased cycles of concentration without formation of calcium scale. The method can include first determining the calcium hardness and total alkalinity of the makeup water, calculating the operating cycles of concentration using a formula developed for the specified chemical composition, then dosing the treated water to maintain a constant level of the chemical composition. The method permits scale-free operation of evaporative cooling towers at a minimum of two (2) cycles of concentration over existing technology.Type: GrantFiled: March 28, 2013Date of Patent: January 5, 2016Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Patent number: 9221697Abstract: Discharge water from a coal mine, and/or water from an abandoned coal mine, is used as a source of sulfate ions to precipitate barium from gas well hydrofracture wastewater. A liquid comprising a gas well hydrofracture wastewater comprising barium is mixed with a coal mine water comprising sulfate ions. The amount of coal mine water in the liquid is sufficient to provide enough sulfate ions to precipitate at least 90% of the barium in the gas well hydrofracture wastewater. The ratio of gas well hydrofracture wastewater to coal mine water can be from 1:10 to 1:1.Type: GrantFiled: June 3, 2014Date of Patent: December 29, 2015Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Publication number: 20150060368Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate and strontium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.Type: ApplicationFiled: November 3, 2014Publication date: March 5, 2015Inventor: Timothy Edward KEISTER
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Patent number: 8877690Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.Type: GrantFiled: August 31, 2011Date of Patent: November 4, 2014Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Publication number: 20140286854Abstract: Discharge water from a coal mine, and/or water from an abandoned coal mine, is used as a source of sulfate ions to precipitate barium from gas well hydrofracture wastewater.Type: ApplicationFiled: June 3, 2014Publication date: September 25, 2014Applicant: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Patent number: 8834726Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well hydrofracture wastewater. The method can involve precipitating barium as barium sulfate, precipitating calcium and strontium as calcium carbonate and strontium carbonate, precipitating magnesium hydroxide, and filtering out the metal compounds to form a recycle water. The recycle water produced from the method is also provided, as is a method for using the recycle water as a gas well hydrofracture water. In some embodiments, discharge water from a coal mine, and/or water from an abandoned coal mine, is used as a source of sulfate ions to precipitate barium as barium sulfate.Type: GrantFiled: November 17, 2009Date of Patent: September 16, 2014Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Publication number: 20130334141Abstract: A method and chemical composition are provided which permit operation of evaporative cooling towers at increased cycles of concentration without formation of calcium scale. The method can include first determining the calcium hardness and total alkalinity of the makeup water, calculating the operating cycles of concentration using a formula developed for the specified chemical composition, then dosing the treated water to maintain a constant level of the chemical composition. The method permits scale-free operation of evaporative cooling towers at a minimum of two (2) cycles of concentration over existing technology.Type: ApplicationFiled: March 28, 2013Publication date: December 19, 2013Applicant: ProChemTech International, Inc.Inventor: Timothy Edward KEISTER
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Patent number: 8585999Abstract: An electrolytic cell is provided that can include: a first electrode plate including a first surface that can include a graphite material; a second electrode plate including a second surface that can include a graphite material opposing the first surface; an electrolytic reaction zone between the first surface and the second surface; and an inlet to and an outlet from the electrolytic reaction zone. The first electrode plate and the second electrode plate can include resin-impregnated monolithic graphite plates. The first electrode plate and the second electrode plate can form opposite internal walls of a chamber for the electrolytic reaction and thus can be provided without a container for containing the electrode plates. Methods are also provided for flow-through-resin-impregnating porous, monolithic graphite plates to form electrode plates.Type: GrantFiled: March 30, 2011Date of Patent: November 19, 2013Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Patent number: 8496847Abstract: A method and chemical composition are provided which permit operation of evaporative cooling towers at increased cycles of concentration without formation of calcium scale. The method can include first determining the calcium hardness and total alkalinity of the makeup water, calculating the operating cycles of concentration using a formula developed for the specified chemical composition, then dosing the treated water to maintain a constant level of the chemical composition. The method permits scale-free operation of evaporative cooling towers at a minimum of two (2) cycles of concentration over existing technology.Type: GrantFiled: April 29, 2011Date of Patent: July 30, 2013Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Publication number: 20130048562Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well production wastewater to form a wastewater brine. The method can involve crystallizing sodium chloride by evaporation of the wastewater brine with concurrent production of a liquor comprising calcium chloride solution. Bromine and lithium can also be recovered from the liquor in accordance with the teachings of the present invention. Various metal sulfates, such as barium sulfate, can be removed from the wastewater in the production of the wastewater brine. Sources of wastewater can include gas well production wastewater and hydrofracture flowback wastewater.Type: ApplicationFiled: August 31, 2011Publication date: February 28, 2013Applicant: PROCHEMTECH INTERNATIONAL, INC.Inventor: Timothy Edward KEISTER
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Publication number: 20120273430Abstract: A method and chemical composition are provided which permit operation of evaporative cooling towers at increased cycles of concentration without formation of calcium scale. The method can include first determining the calcium hardness and total alkalinity of the makeup water, calculating the operating cycles of concentration using a formula developed for the specified chemical composition, then dosing the treated water to maintain a constant level of the chemical composition. The method permits scale-free operation of evaporative cooling towers at a minimum of two (2) cycles of concentration over existing technology.Type: ApplicationFiled: April 29, 2011Publication date: November 1, 2012Applicant: PROCHEMTECH INTERNATIONAL, INC.Inventor: Timothy Edward Keister
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Publication number: 20110174633Abstract: An electrolytic cell is provided that can include: a first electrode plate including a first surface that can include a graphite material; a second electrode plate including a second surface that can include a graphite material opposing the first surface; an electrolytic reaction zone between the first surface and the second surface; and an inlet to and an outlet from the electrolytic reaction zone. The first electrode plate and the second electrode plate can include resin-impregnated monolithic graphite plates. The first electrode plate and the second electrode plate can form opposite internal walls of a chamber for the electrolytic reaction and thus can be provided without a container for containing the electrode plates. Methods are also provided for flow-through-resin-impregnating porous, monolithic graphite plates to form electrode plates.Type: ApplicationFiled: March 30, 2011Publication date: July 21, 2011Applicant: ProChemTech International, Inc.Inventor: Timothy Edward KEISTER
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Patent number: 7927470Abstract: An electrolytic cell is provided that can include: a first electrode plate including a first surface that can include a graphite material; a second electrode plate including a second surface that can include a graphite material opposing the first surface; an electrolytic reaction zone between the first surface and the second surface; and an inlet to and an outlet from the electrolytic reaction zone. The first electrode plate and the second electrode plate can include resin-impregnated monolithic graphite plates. The first electrode plate and the second electrode plate can form opposite internal walls of a chamber for the electrolytic reaction and thus can be provided without a container for containing the electrode plates. Methods are also provided for flow-through-resin-impregnating porous, monolithic graphite plates to form electrode plates.Type: GrantFiled: May 29, 2007Date of Patent: April 19, 2011Assignee: ProChemTech International, Inc.Inventor: Timothy Edward Keister
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Publication number: 20100125044Abstract: A method of treating a wastewater is provided and can be used, for example, to treat a gas well hydrofracture wastewater. The method can involve precipitating barium as barium sulfate, precipitating calcium and strontium as calcium carbonate and strontium carbonate, precipitating magnesium hydroxide, and filtering out the metal compounds to form a recycle water. The recycle water produced from the method is also provided, as is a method for using the recycle water as a gas well hydrofracture water. In some embodiments, discharge water from a coal mine, and/or water from an abandoned coal mine, is used as a source of sulfate ions to precipitate barium as barium sulfate.Type: ApplicationFiled: November 17, 2009Publication date: May 20, 2010Applicant: PROCHEMTECH INTERNATIONAL, INC.Inventor: Timothy Edward Keister
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Publication number: 20030221971Abstract: An electrolytic cell is provided that can include: a first electrode plate including a first surface that can include a graphite material; a second electrode plate including a second surface that can include a graphite material opposing the first surface; an electrolytic reaction zone between the first surface and the second surface; and an inlet to and an outlet from the electrolytic reaction zone. The first electrode plate and the second electrode plate can include impregnated graphite. The first electrode plate and the second electrode plate can essentially form a chamber for the electrolytic reaction. Methods are provided for using the electrolytic cells, a sodium chloride solution, and a sodium bromide solution, for on-site electrolytic production of hypobromite solution for use as a biocide in water systems.Type: ApplicationFiled: May 30, 2003Publication date: December 4, 2003Inventor: Timothy Edward Keister