Patents Assigned to Tessenderlo Kerley, Inc.
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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
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Patent number: 7824652Abstract: The present invention relates to a system and process utilizing ammonium thiosulfate 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: January 9, 2009Date of Patent: November 2, 2010Assignee: Tessenderlo Kerley, Inc.Inventor: Mark P. Clarkson
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Patent number: 7781375Abstract: The present composition is capable of forming a particle film and comprises: (a) less than 99.65% by weight of at least one particle; (b) at least one volumizing agent selected from the group consisting of: (i) cellulose selected from the group consisting of ethyl hydroxy ethyl cellulose, hydroxy ethyl cellulose, hydroxy propyl cellulose, hydroxy ethyl methyl cellulose, hydroxy propyl methyl cellulose, methyl cellulose, ethyl cellulose, and ethyl methyl cellulose and present in an amount greater than 0.35% by weight; and (ii) non-cellulosic component or cellulose other than said cellulose (i) present in an amount of at least 0.05% by weight; and optionally (c) at least one spreader. The composition may be used to form agricultural films.Type: GrantFiled: August 11, 2006Date of Patent: August 24, 2010Assignee: Tessenderlo Kerley, Inc.Inventors: John T. Mosko, Richard C. Pluta, David Michael Glenn, Gary Puterka
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Publication number: 20100147776Abstract: In one aspect, ozone is quenched from a water stream, such as a drinking water or wastewater stream being treated with ozone, by contacting the stream with magnesium thiosulfate. In another aspect, a method of scrubbing ozone from a gaseous stream comprises contacting the gaseous stream with magnesium thiosulfate. In an alternative embodiment, chlorine is quenched from a water stream by contacting the stream with magnesium thiosulfate or potassium thiosulfate. In yet another aspect, a method of scrubbing chlorine from a gaseous stream comprises contacting the stream with magnesium thiosulfate or potassium thiosulfate. In another embodiment, a thiosulfate, such as magnesium thiosulfate, calcium thiosulfate, potassium thiosulfate, or sodium thiosulfate, is provided on an air filter for scrubbing ozone or chlorine from gaseous streams.Type: ApplicationFiled: February 12, 2010Publication date: June 17, 2010Applicant: TESSENDERLO KERLEY, INC.Inventors: Michael Hojjatie, Dean Abrams
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Patent number: 7686963Abstract: In one aspect, ozone is quenched from a water stream, such as a drinking water or wastewater stream being treated with ozone, by contacting the stream with magnesium thiosulfate. In another aspect, a method of scrubbing ozone from a gaseous stream comprises contacting the gaseous stream with magnesium thiosulfate. In an alternative embodiment, chlorine is quenched from a water stream by contacting the stream with magnesium thiosulfate or potassium thiosulfate. In yet another aspect, a method of scrubbing chlorine from a gaseous stream comprises contacting the stream with magnesium thiosulfate or potassium thiosulfate. In another embodiment, a thiosulfate, such as magnesium thiosulfate, calcium thiosulfate, potassium thiosulfate, or sodium thiosulfate, is provided on an air filter for scrubbing ozone or chlorine from gaseous streams.Type: GrantFiled: November 16, 2004Date of Patent: March 30, 2010Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Hojjatie, Dean Abrams
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Patent number: 7494525Abstract: Use of urease-inhibiting amounts of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof, in combination with urea-containing fertilizer to significantly reduce potential losses of nitrogen due to ammonia volatilization.Type: GrantFiled: February 22, 2005Date of Patent: February 24, 2009Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, John Garland Clapp, Thomas David Fairweather, Constance Lynn Frank Lockhart
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Publication number: 20060185411Abstract: Use of urease-inhibiting amounts of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof, in combination with urea-containing fertilizer to significantly reduce potential losses of nitrogen due to ammonia volatilization.Type: ApplicationFiled: February 22, 2005Publication date: August 24, 2006Applicant: Tessenderlo Kerley, Inc.Inventors: Michael Hojjatie, John Clapp, Thomas Fairweather, Constance Lockhart
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Publication number: 20060104876Abstract: In one aspect, ozone is quenched from a water stream, such as a drinking water or wastewater stream being treated with ozone, by contacting the stream with magnesium thiosulfate. In another aspect, a method of scrubbing ozone from a gaseous stream comprises contacting the gaseous stream with magnesium thiosulfate. In an alternative embodiment, chlorine is quenched from a water stream by contacting the stream with magnesium thiosulfate or potassium thiosulfate. In yet another aspect, a method of scrubbing chlorine from a gaseous stream comprises contacting the stream with magnesium thiosulfate or potassium thiosulfate. In another embodiment, a thiosulfate, such as magnesium thiosulfate, calcium thiosulfate, potassium thiosulfate, or sodium thiosulfate, is provided on an air filter for scrubbing ozone or chlorine from gaseous streams.Type: ApplicationFiled: November 16, 2004Publication date: May 18, 2006Applicant: TESSENDERLO KERLEY, INC.Inventors: Michael Hojjatie, Dean Abrams
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Patent number: 6984368Abstract: An efficient process to produce calcium thiosulfate (CaS2O3) from lime, sulfur and oxygen is described. By selecting appropriate process conditions such as mole ratios of lime to sulfur, temperature and pressure of the reaction process and the oxidation conditions, including rate and duration, the concentration of byproducts in the resulting suspension can be reduced to about 2% by weight or less. The solid particulate dispersion in the suspension tends to form a slimy solid suspension that is hard to filter if not treated properly. The suspension then can be acidified and treated with a flocculent. This agglomerates the solids into a floc that filters with ease. The resulting calcium thiosulfate is a clear liquid with concentrations achievable up to 29%.Type: GrantFiled: June 9, 2003Date of Patent: January 10, 2006Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hajjatie, Harry Charles Kominski, III, Mark Daniel Aspengren, Mark Pierce Clarkson, Constance Lynn Frank Lockhart
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Patent number: 6921523Abstract: An efficient process for the preparation of magnesium thiosulfate involves reaction of magnesium hydrosulfite and sulfur at elevated temperature. Magnesium hydrosulfite can be prepared from commercial magnesium oxide and sulfur. Sulfur dioxide can be used to maintain pH. The resulting product is an emulsion of liquid magnesium thiosulfate and solid byproducts. Under controlled conditions, including mole ratios of MgO to sulfur, temperature of the reaction process, and pH, as well as rate and duration of SO2 purging, production of byproducts can be reduced to less than about 2% by weight. The magnesium thiosulfate solution can be prepared with concentrations of at least about 25%, preferably at least about 30%.Type: GrantFiled: October 14, 2003Date of Patent: July 26, 2005Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, Constance Lynn Frank Lockhart
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Publication number: 20050079125Abstract: An efficient process for the preparation of magnesium thiosulfate involves reaction of magnesium hydrosulfite and sulfur at elevated temperature. Magnesium hydrosulfite can be prepared from commercial magnesium oxide and sulfur. Sulfur dioxide can be used to maintain pH. The resulting product is an emulsion of liquid magnesium thiosulfate and solid byproducts. Under controlled conditions, including mole ratios of MgO to sulfur, temperature of the reaction process, and pH, as well as rate and duration of SO2 purging, production of byproducts can be reduced to less than about 2% by weight. The magnesium thiosulfate solution can be prepared -with concentrations of at least about 25%, preferably at least about 30%.Type: ApplicationFiled: October 14, 2003Publication date: April 14, 2005Applicant: Tessenderlo Kerley, Inc.Inventors: Michael Hojjatie, Constance Lynn Lockhart
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Publication number: 20040247518Abstract: An efficient process to produce calcium thiosulfate (CaS2O3) from lime, sulfur and oxygen is described. By selecting appropriate process conditions such as mole ratios of lime to sulfur, temperature and pressure of the reaction process and the oxidation conditions, including rate and duration, the concentration of byproducts in the resulting suspension can be reduced to about 2% by weight or less. The solid particulate dispersion in the suspension tends to form a slimy solid suspension that is hard to filter if not treated properly. The suspension then can be acidified and treated with a flocculent. This agglomerates the solids into a floc that filters with ease. The resulting calcium thiosulfate is a clear liquid with concentrations achievable up to 29%.Type: ApplicationFiled: June 9, 2003Publication date: December 9, 2004Applicant: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hajjatie, Harry Charles Kominski, Mark Daniel Aspengren, Mark Pierce Clarkson, Constance Lynn Frank Lockhart
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Publication number: 20040168493Abstract: The present invention provides a one-stage method of preparing a urea-formaldehyde plant nutrient solution with high percentage of Slow Release Nitrogen (SRN) moiety and low amounts of methylol by-products. A solution of formalin is reacted with urea in the presence of small amount of alkaline material to maintain a pH greater than 7. After the urea has dissolved, an ammonia reactant is added to the reaction mixture. The reaction mixture is exothermically (and, if needed, externally) heated to at least about 90° C. and held for about 70-75 minutes, during which a calculated amount of alkaline material is added, typically in three portions over the first 45 minutes of the 70-75 minute period.Type: ApplicationFiled: February 27, 2003Publication date: September 2, 2004Applicant: TESSENDERLO KERLEY, INC.Inventors: Michael Hojjatie, Harry Charles Kominski, Dean Abrams
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Patent number: 6296828Abstract: Tetrathiocarbonate salt solutions are prepared by dissolving sulfur in carbon disulfide to form a sulfur solution. An alkali metal hydroxide solution is added to the sulfur solution, and an emulsion of the alkali metal hydroxide solution in the sulfur solution is formed. An alkali metal hydrosulfide is added to the emulsion to form the tetrathiocarbonate salt. The process yields tetrathiocarbonate salts in weight ratios up to about 9:1 with respect to trithiocarbonate salts. Aqueous solutions of tetrathiocarbonate salts can be produced in concentrations up to about 56 wt %, i.e., near saturation. The process also enables tetrathiocarbonate salts to be produced at or near atmospheric pressure and at only slightly elevated temperatures.Type: GrantFiled: August 2, 1999Date of Patent: October 2, 2001Assignee: Tessenderlo Kerley, Inc.Inventors: Anatoly Pustilnik, Michael Hojjatie
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Patent number: 6261529Abstract: Tetrathiocarbonate salt solutions are prepared by dissolving sulfur in carbon disulfide to form a sulfur solution. An alkali metal hydroxide solution and an alkali metal hydrosulfide are added to the sulfur solution to form the tetrathiocarbonate salt. The process yields tetrathiocarbonate salts in substantially higher weight ratios with respect to trithiocarbonate salts. Aqueous solutions of tetrathiocarbonate salts can be produced in substantially higher concentrations, even approaching saturation. The process also enables tetrathiocarbonate salts to be produced at or near atmospheric pressure and at only slightly elevated temperatures.Type: GrantFiled: October 28, 1999Date of Patent: July 17, 2001Assignee: Tessenderlo Kerley, Inc.Inventors: Anatoly Pustilnik, Michael Hojjatie
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Patent number: 5944868Abstract: Ion exchange is used to make two grades of liquid fertilizer. In the first phase, ammonium thiosulfate (ATS) is contacted with a potassium-containing ion exchange resin to make the liquid fertilizer potassium thiosulfate (KTS) and an ammonium-containing resin. If operated under ambient temperatures, oxidation of any sulfites and the attendant formation of insoluble sulfates is avoided along with the associated fouling costs.The recharge line is operated in parallel to the KTS line. When the ammonium-containing resin is contacted with potassium chloride, the ammonium cations are exchanged for potassium cations and produce an ammonium chloride that can be used as a second liquid fertilizer. If desired, a concentrator can be used to remove water from each fertilizer to increase its concentration of KTS or ammonium chloride.Type: GrantFiled: January 28, 1998Date of Patent: August 31, 1999Assignee: Tessenderlo Kerley, Inc.Inventors: Yelana (Helen) Faynshteyn, Mark Clarkson