Patents Assigned to Tessenderlo Kerley, Inc.
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Publication number: 20230192522Abstract: Methods for removing a soluble heavy metal-sulfur complex from a process solution comprise contacting the process solution with an oxidant to oxidize the heavy metal-sulfur complex and form an oxidized complex precipitate, or with an acid to acidify the heavy metal-sulfur complex and form an acidified complex precipitate, and removing the precipitate from the process solution to provide a heavy metal-reduced solution. The method is advantageous for removing heavy metals such as mercury, cadmium, barium, iron, vanadium and/or manganese from process solutions, for example originating from natural gas production, petroleum production, water treatment or mining.Type: ApplicationFiled: April 6, 2021Publication date: June 22, 2023Applicant: Tessenderlo Kerley, Inc.Inventors: Scott W. WAITE, Jorge FRANCO, Paul Moran, Constance Lynn Frank LOCKHART
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Publication number: 20220396483Abstract: An aqueous polysulfide composition comprises one or more inorganic polysulfides, wherein the amount of polysulfides in the composition is at least 30% by weight, preferably at least 35% by weight, more preferably at least 40% by weight, and wherein the amount of thiosulfate anions in the composition is at most 5% by weight, relative to the total weight of the composition. In one embodiment the weight ratio of polysulfides to thiosulfates in the aqueous composition is from 55/1 to 1.5/1. In another embodiment, the aqueous polysulfide composition has a pH of at least 10. A process for preparing an aqueous polysulfide composition comprises reacting a sulfide salt (c) with elemental sulfur to form one or more polysulfide salts. The compositions have many uses and are in particular useful in metal capturing, cyanide scavenging, soil remediation, water treatment, petroleum processing, leather processing, and making of paper pulp.Type: ApplicationFiled: June 22, 2020Publication date: December 15, 2022Applicant: Tessenderlo Kerley, Inc.Inventors: Constance Lockhart, Michael Hojjatie, Alexandros Dimitriadis
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Patent number: 11039618Abstract: A stable concentrated solution of a metam salt and a polysulfide, particularly calcium polysulfide, can be used to treat for soil pathogens, including the pathogen responsible for potato early die. Calcium polysulfide alone in sufficient concentration and dosage provides activity against the same pathogen. It is believed that the high concentrations of the compounds, that is, the high concentration of lime sulfur admixed with a metam, results in lower rates of degradation that result from calcareous soil, increased soil adsorption or retention, and improved distribution of metam or methyl isothiocyanate (MITC) in the soil.Type: GrantFiled: August 22, 2017Date of Patent: June 22, 2021Assignee: Tessenderlo Kerley, Inc.Inventors: Kyle England Coleman, Michael Massoud Hojjatie, Bernard Oscar Olsen, Kurt Carl Volker
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Patent number: 10869480Abstract: Described herein is a method for slowing the progression of citrus greening disease. The method may substantially stop the progression of citrus greening disease, preventing the loss of all or part of a citrus harvest. The method comprises the application of one or more thiosulfates in irrigation water to the root zone of a citrus tree.Type: GrantFiled: August 14, 2017Date of Patent: December 22, 2020Assignee: Tessenderlo Kerley, Inc.Inventors: Thomas David Fairweather, Bert Richard Bock
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Patent number: 10717090Abstract: A method of depressing copper sulfides and iron sulfides in a molybdenite flotation recovery process that uses alkaline or alkaline earth polysulfides. The method of enriching molybdenite content from a slurry having molybdenite and at least one of iron sulfides and copper sulfides can include the steps of adding an effective amount of a depressing reagent selected from one or more alkaline polysulfides, alkaline earth polysulfides, or a mixture thereof, to the slurry, wherein the pH of the slurry is greater than about 8.0; and passing a gas through the slurry to separate material by selective flotation, and recovering the molybdenite from a froth.Type: GrantFiled: April 9, 2015Date of Patent: July 21, 2020Assignee: Tessenderlo Kerley, Inc.Inventors: Alexandros Dimitriadis, Theodore E. Cook
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Patent number: 10005667Abstract: The invention relates to a process for preparing potassium thiosulfate, potassium sulfite or potassium bisulfite comprising the following steps: Step (1a): providing a potassium hydroxide or potassium carbonate solution for neutralizing acid forming components such as dissolving SO2 or H2S; Step (1b): providing an SO2 contacting solution, containing at least some potassium sulfite or potassium bisulfite or potassium thiosulfate; Step (2): providing SO2 gas; Step (3): reacting these to absorb the SO2 gas and to form an intermediate reaction mixture comprising potassium sulfite, or potassium bisulfite or a mixture thereof, and optionally recovering the potassium sulfite, or potassium bisulfite or a mixture thereof, and/or optionally using steps 4 and 5; Step (4): adding sulfur or sulfide containing compound containing sulfur having the oxidation state of 0, ?2 or of between 0 and ?2 to the reaction mixture and optionally potassium hydroxide or potassium carbonate, and reacting the mixture under suitable condType: GrantFiled: December 15, 2016Date of Patent: June 26, 2018Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart, Alexandros Dimitriadis, Mark P. Clarkson, Harry Charles Kominski, Jeroen Van Cauwenbergh, Nicholas S. Shult, Adam T. Goldsmith
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Patent number: 9988270Abstract: An efficient process for preparation of potassium thiosulfate (K2S2O3) is described. Potassium hydroxide (KOH) and elemental sulfur (S) are converted to potassium polysulfide, which is subsequently oxidized. The process allows using specifically designed process conditions such as mole ratios of potassium hydroxide to sulfur, and temperature, to obtain an optimized formulation of desired polysulfide, and a specifically designed set of conditions such as temperature, pressure, rate and duration of the oxidant during the oxidation conditions, to obtain a relatively high concentration of soluble potassium thiosulfate product with high purity, with relatively low amounts of byproducts. The manufacturing process can either be a batch process or a continuous process utilizing Continuous Stirred Tank Reactors (CSTR). The CSTR process is dependent on several design parameters, including pressure, and temperature optimization to avoid product instability.Type: GrantFiled: December 15, 2016Date of Patent: June 5, 2018Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart, Alexandros Dimitriadis, Mark P. Clarkson, Harry Charles Kominski, Jeroen Van Cauwenbergh, Nicholas S. Shult, Adam T. Goldsmith
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Publication number: 20180049441Abstract: A stable concentrated solution of a metam salt and a polysulfide, particularly calcium polysulfide, can be used to treat for soil pathogens, including the pathogen responsible for potato early die. Calcium polysulfide alone in sufficient concentration and dosage provides activity against the same pathogen. It is believed that the high concentrations of the compounds, that is, the high concentration of lime sulfur admixed with a metam, results in lower rates of degradation that result from calcareous soil, increased soil adsorption or retention, and improved distribution of metam or methyl isothiocyanate (MITC) in the soil.Type: ApplicationFiled: August 22, 2017Publication date: February 22, 2018Applicant: Tessenderlo Kerley, Inc.Inventors: Kyle England Coleman, Michael Massoud Hojjatie, Bernard Oscar Olsen, Kurt Carl Volker
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Patent number: 8748345Abstract: A method of improving turfgrass quality involves applying onto the turfgrass an effective amount of a composition which has been dissolved or dispersed in water, wherein the composition contains between 0.11 and 0.14 parts by weight of a phthalocyanine compound, preferably Pigment Green 7, per one part by weight of monoalkyl esters of phosphorous acid or salts thereof, preferably fosetyl aluminum or salts thereof.Type: GrantFiled: December 17, 2007Date of Patent: June 10, 2014Assignee: Tessenderlo Kerley Inc.Inventors: Robert L Hodge, Michael L De Riso
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Patent number: 8545591Abstract: The present invention provides a new liquid fertilizer comprised of potassium sulfite and potassium bisulfite, with neutral to slightly alkaline pH, relatively lower salt index and potentially lower phytotoxicity damage compared to other sources of potassium and sulfur products applied in equal amounts as a starter fertilizer. More specifically, the present invention further relates to methods for fertilizing using a composition of potassium sulfite and potassium bisulfite, particularly as a starter fertilizer, in-furrow fertilizer, side dress fertilizer, and for foliar, broadcast, soil injection and fertigation applications. The fertilizer composition is comprised primarily of potassium sulfite and potassium bisulfite (with the fertilizer grade of 0-0-23-8S).Type: GrantFiled: May 10, 2012Date of Patent: October 1, 2013Assignee: Tessenderlo Kerley, Inc.Inventors: Thomas D. Fairweather, Michael Massoud Hojjatie
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Patent number: 8454929Abstract: An efficient process for the continuous preparation of calcium thiosulfate (CaS2O3) from lime sulfur, through oxidation is described. The process involves oxidizing calcium polysulfide intermediate in a series of reactors to produce calcium thiosulfate as a clear liquid in high concentration with minimal byproducts. The process results in the complete destruction of polythionates, permitting the calcium thiosulfate produced to be useful in certain leaching processes for precious metals. The invention further makes it possible to recycle the process water from the leaching process for use as a raw material reactant in the process for calcium thiosulfate production.Type: GrantFiled: August 16, 2011Date of Patent: June 4, 2013Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart, Alexandros Dimitriadis, Jeroen Van Cauwenbergh, Roeland Van Dael
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Publication number: 20120255335Abstract: The present invention provides a new liquid fertilizer comprised of potassium sulfite and potassium bisulfite, with neutral to slightly alkaline pH, relatively lower salt index and potentially lower phytotoxicity damage compared to other sources of potassium and sulfur products applied in equal amounts as a starter fertilizer. More specifically, the present invention further relates to methods for fertilizing using a composition of potassium sulfite and potassium bisulfite, particularly as a starter fertilizer, in-furrow fertilizer, side dress fertilizer, and for foliar, broadcast, soil injection and fertigation applications. The fertilizer composition is comprised primarily of potassium sulfite (with the fertilizer grade of 0-0-23-8S).Type: ApplicationFiled: May 10, 2012Publication date: October 11, 2012Applicant: TESSENDERLO KERLEY, INC.Inventors: Thomas D. Fairweather, Michael Massoud Hojjatie
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Publication number: 20120183594Abstract: A method of protecting plants from ozone by applying to the photosynthetically active portions of said plants a particle film containing particles, an effective amount of a volumizing and two or more of nitrogen-rich carbonaceous materials which destroy ozone, microbial fertilizer which promotes microbial growth in the particle film, and ozone-reactable carbonaceous materials coated on the particles.Type: ApplicationFiled: October 3, 2011Publication date: July 19, 2012Applicants: Tessenderlo Kerley, Inc.Inventors: David Michael Glenn, Peter S. Barrows, Kurt C. Volker, Christopher G. Hayden
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Publication number: 20120031158Abstract: An efficient process for the continuous preparation of calcium thiosulfate (CaS2O3) from lime sulfur, through oxidation is described. The process involves oxidizing calcium polysulfide intermediate in a series of reactors to produce calcium thiosulfate as a clear liquid in high concentration with minimal byproducts. The process results in the complete destruction of polythionates, permitting the calcium thiosulfate produced to be useful in certain leaching processes for precious metals. The invention further makes it possible to recycle the process water from the leaching process for use as a raw material reactant in the process for calcium thiosulfate production.Type: ApplicationFiled: August 16, 2011Publication date: February 9, 2012Applicant: TESSENDERLO KERLEY, INC.Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart, Alexandros Dimitriadis, Jeroen Van Cauwenbergh, Roeland Van Dael
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PROCESS FOR PREPARATION OF CALCIUM THIOSULFATE LIQUID SOLUTION FROM LIME, SULFUR, AND SULFUR DIOXIDE
Publication number: 20110262343Abstract: An efficient batch or semi-continuous method of production of relative high concentration, low byproduct-containing, calcium thiosulfate (CaS2O3) from lime, sulfur or calcium polysulfide, and sulfur dioxide under elevated reaction temperature conditions is described. The product is an emulsion of liquid calcium thiosulfate and solid byproducts. Under the conditions of the art, including the mole ratios of lime to sulfur, the temperature of the reaction process and the sulfur dioxide reaction conditions, including rate and duration, the byproducts are reduced to about 2% by weight.Type: ApplicationFiled: April 21, 2010Publication date: October 27, 2011Applicant: TESSENDERLO KERLEY, INC.Inventors: Michael Massoud Hojjatie, Yelena Feinstein, Constance Lynn Frank Lockhart -
Process for preparation of calcium thiosulfate liquid solution from lime, sulfur, and sulfur dioxide
Patent number: 8034318Abstract: An efficient batch or semi-continuous method of production of relative high concentration, low byproduct-containing, calcium thiosulfate (CaS2O3) from lime, sulfur or calcium polysulfide, and sulfur dioxide under elevated reaction temperature conditions is described. The product is an emulsion of liquid calcium thiosulfate and solid byproducts. Under the conditions of the art, including the mole ratios of lime to sulfur, the temperature of the reaction process and the sulfur dioxide reaction conditions, including rate and duration, the byproducts are reduced to about 2% by weight.Type: GrantFiled: April 21, 2010Date of Patent: October 11, 2011Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Yelena Feinstein, Constance Lynn Frank Lockhart -
Patent number: 7927576Abstract: The present invention relates to a system and process utilizing ammonium thio sulfate solution (ATS) as the primary liquid absorption agent that is re-circulated through an SO2 Contactor/Absorber for high efficiency contacting and absorption of sulfur dioxide, SO2 from a combustion gas stream generated by incineration of a Claus Sulfur Recovery Unit (SRU) off gas stream (often referred to as a Claus tail gas stream) and also additional SO2 generated from incineration of additional sulfur containing streams. ATS is also re-circulated through a separate H2S Contactor/Absorber for absorption of and reaction with a Sour Water Stripper (SWS) off gas stream and additional H2S-Acid Gas (A.G.) streams to produce additional concentrated ATS. The process and equipment also provides the ability to readily switch between using ATS and ABS as the primary absorbent solution for SO2 absorption, depending upon the concentration of SO2 in the off gas feed streams.Type: GrantFiled: November 1, 2010Date of Patent: April 19, 2011Assignee: Tessenderlo Kerley, Inc.Inventor: Mark P. Clarkson
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Patent number: 7914763Abstract: An efficient semi-continuous preparation of manganese thiosulfate (MnS2O3, MnTS) from manganese hydrosulfite and sulfur at elevated temperature is described. Manganese hydrosulfite is prepared from commercial manganese carbonate and sulfur dioxide. The resulting product is an emulation of liquid manganese thiosulfate and solid by-products. A manganese thiosulfate solution is produced according to the invention by use of certain mole ratios of MgCO3 to sulfur, and certain parameters such as the temperature of the reaction process and the pH conditions, including rate and duration of SO2 purging, which causes the by-products to be reduced to less than 2% by weight. The resulting manganese thiosulfate is a pinkish liquid with concentration up to 20%.Type: GrantFiled: February 15, 2010Date of Patent: March 29, 2011Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart, Thomas D. Fairweather
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Patent number: 7897133Abstract: The present invention is directed to the conversion of gas streams comprising ammonia, hydrogen sulfide, and water in the form of liquids or gases that are generated by petroleum refineries and coke ovens to beneficiary agriculture products, by forming ammonium sulfide and then converting the ammonium sulfide, using sulfuric acid, to pure ammonium sulfate.Type: GrantFiled: September 18, 2009Date of Patent: March 1, 2011Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Anatoly Pustilnik, Harry Charles Kominski
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Publication number: 20110044875Abstract: The present invention relates to a system and process utilizing ammonium thio sulfate solution (ATS) as the primary liquid absorption agent that is re-circulated through an SO2 Contactor/Absorber for high efficiency contacting and absorption of sulfur dioxide, SO2 from a combustion gas stream generated by incineration of a Claus Sulfur Recovery Unit (SRU) off gas stream (often referred to as a Claus tail gas stream) and also additional SO2 generated from incineration of additional sulfur containing streams. ATS is also re-circulated through a separate H2S Contactor/Absorber for absorption of and reaction with a Sour Water Stripper (SWS) off gas stream and additional H2S-Acid Gas (A.G.) streams to produce additional concentrated ATS. The process and equipment also provides the ability to readily switch between using ATS and ABS as the primary absorbent solution for SO2 absorption, depending upon the concentration of SO2 in the off gas feed streams.Type: ApplicationFiled: November 1, 2010Publication date: February 24, 2011Applicant: TESSENDERLO KERLEY, INC.Inventor: Mark P. Clarkson