12 patents
Utility
Process for producing geothermal power, selective removal of silica and iron from brines, and improved injectivity of treated brines
28 Nov 23
This invention relates to a method for producing geothermal power using geothermal brines while producing a reduced silica and iron brine having improved injectivity.
Stephen Harrison, John Burba, III
Filed: 12 Jan 21
Utility
Photochlorination of partially-chlorinated chloromethanes to carbon tetrachloride
10 Oct 23
A method of producing carbon tetrachloride includes providing a chloromethanes stream, combining the chloromethanes stream with chlorine and additional carbon tetrachloride to form a reaction mixture, wherein the reaction mixture includes at least stoichiometric levels of chlorine, introducing electromagnetic radiation to the reaction mixture and subjecting the reaction mixture to suitable reaction conditions to form product carbon tetrachloride, and collecting a product stream including the product carbon tetrachloride.
Robert L. Zeller, III, Darrell G. Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer, John L. Dawkins
Filed: 10 Jan 20
Utility
Preparation of lithium carbonate from lithium chloride containing brines
16 May 23
This invention relates to a method for the preparation of lithium carbonate from lithium chloride containing brines.
Stephen Harrison
Filed: 7 Aug 20
Utility
Photochlorination of chloroform to carbon tetrachloride
21 Feb 23
A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
Filed: 28 Sep 20
Utility
Method for making 1,1,3,3-tetrachloropropene
31 Jan 23
A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and in the presence of a Lewis acid, and where the oxidizing agent is chlorine and the Lewis acid is ferric chloride.
Rodney L. Klausmeyer, Darrell G. Hollis, Keith S. Kramer, John L. Dawkins, Derrek Rae Burrows
Filed: 27 Aug 21
Utility
Methods for providing polyvinyl chloride particles for preparing chlorinated polyvinyl chloride
11 Oct 22
A method for providing particles of polyvinyl chloride, wherein the particles offer improved chlorinating efficiency, the method comprising (i) providing polyvinyl chloride particles; and (ii) introducing a chlorination accelerant to the polyvinyl chloride particles to thereby provide polyvinyl chloride particles having an accelerant associated therewith.
Keith S. Kramer, Lance Mayer, Rodney L. Klausmeyer
Filed: 7 Mar 17
Utility
Catalyst and process for oxychlorination of ethylene to dichloroethane
27 Sep 22
In an oxychlorination process of the type where ethylene is converted to 1,2-dichloroethane in the presence of a supported copper catalyst, the improvement comprising: the use of a supported catalyst prepared by (i) impregnating, within a first step, an alumina support with a first aqueous solution including copper, to thereby form a first catalyst component; and (ii) impregnating, within a subsequent step, the first catalyst component with a second aqueous solution including copper and alkaline earth metal, to thereby form the supported catalyst.
Keith Kramer
Filed: 23 Jun 15
Utility
Method for making 1,1,3,3-tetrachloropropene
31 Aug 21
A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane.
Rodney L. Klausmeyer, Darrell G. Hollis, Keith S. Kramer, John L. Dawkins, Derrek Rae Burrows
Filed: 17 Feb 20
Utility
Chloralkali process
23 Nov 20
A method of the type where a brine solution is converted to an alkali metal hydroxide solution within a diaphragm cell, and the resulting cell liquor from the diaphragm cell is introduced to one or more fuel cells for the conversion of the alkali metal hydroxide to form electricity, the improvement comprising regulating the conversion of alkali metal hydroxide within the fuel cell to a conversion of less than 90%, and then subsequently concentrating the alkali metal hydroxide concentration from the anolyte stream of the fuel cell.
Robert L. Zeller, Clifton T. Gonce
Filed: 5 Jun 17
Utility
Methods of making chlorinated hydrocarbons
28 Sep 20
Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed.
Richard L. Wilson, Rodney L. Klausmeyer, John Lee Dawkins, Daniel D. Rohrback, James S. Strathe, Lloyd B. Branam
Filed: 4 Dec 19
Utility
Methods for producing halogenated propanes
28 Sep 20
A process of the type for producing chlorinated propanes by reacting carbon tetrachloride with ethylene within a tank reactor that includes a liquid reaction mixture and a headspace above the reaction mixture wherein ethylene gas diffuses from the liquid reaction mixture into the headspace while agitating the reaction mixture, the improvement comprising transferring ethylene within the headspace back into the reaction mixture through a conduit within the mixing device that agitates the reaction mixture.
John L Dawkins, Darrell Hollis, Keith S. Kramer, Brian Calderwood
Filed: 23 Jul 17
Utility
Photochlorination of chloroform to carbon tetrachloride
28 Sep 20
A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
Robert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
Filed: 29 Jun 17
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