Patents by Inventor Ching-Tsuen Huang
Ching-Tsuen Huang 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: 8430803Abstract: The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.Type: GrantFiled: October 24, 2007Date of Patent: April 30, 2013Assignee: Atomic Energy Council—Institute of Nuclear Energy ResearchInventors: Ching-Tsuen Huang, Ching-Tu Chang
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Patent number: 8227655Abstract: The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.Type: GrantFiled: October 20, 2011Date of Patent: July 24, 2012Assignee: Atomic Energy Council-Institute of Nuclear Energy ResearchInventors: Ching-Tsuen Huang, Ching-Tu Chang
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Publication number: 20120041249Abstract: The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.Type: ApplicationFiled: October 20, 2011Publication date: February 16, 2012Applicant: ATOMIC ENERGY COUNCIL - INSTITUTE OF NUCLEAR ENERGY RESEARCHInventors: CHING-TSUEN HUANG, CHING-TU CHANG
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Publication number: 20110218377Abstract: The present invention discloses a method for solidifying and stabilizing waste acid including steps of condensing waste acid containing phosphoric acid to reduce the volume; mixing the condensed waste acid with waste acid containing fluoroboric acid to solidify and stabilize the mixed waste acid. The pH of the mixed acid is adjusted by adding barium hydroxide as a neutralizer. The efficiency of solidifying waste acid can be improved by partially granulating and by adding solidifying agent indirectly. The method of the present invention can prevent intensely exothermic reaction caused by adding solidifying agents. Furthermore, the method of the present invention is controlled in a temperature of 30 to 45° C. to improve the polymerization of the mixed waste acid so that the efficiency of solidification thereof can be also improved.Type: ApplicationFiled: October 24, 2007Publication date: September 8, 2011Inventors: Ching-Tsuen Huang, Ching-Tu Chang
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Patent number: 7541311Abstract: A vermiculite supported catalyst for carbon monoxide (CO) preferential oxidation (PROX) is disclosed. The CO PROX catalyst comprises at least one catalytic agent, one optional modifier agent, one carrier material, and a vermiculite support. The process for preparing the vermiculite supported catalyst in this invention includes depositing first the carrier material on a vermiculite support followed by calcination to form the carrier-containing support, and wet impregnating the catalytic agent and the optional modifier agent on the carrier-containing support followed by drying and calcination to form the CO preferential oxidation catalyst.Type: GrantFiled: August 31, 2007Date of Patent: June 2, 2009Assignee: Institute of Nuclear Energy ResearchInventors: Chao-Yuh Chen, Ching-Tsuen Huang, Chi-Hung Liao, Ching-Tu Chang
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Publication number: 20090062116Abstract: A vermiculite supported catalyst for carbon monoxide (CO) preferential oxidation (PROX) is disclosed. The CO PROX catalyst comprises at least one catalytic agent, one optional modifier agent, one carrier material, and a vermiculite support. The process for preparing the vermiculite supported catalyst in this invention includes depositing first the carrier material on a vermiculite support followed by calcination to form the carrier-containing support, and wet impregnating the catalytic agent and the optional modifier agent on the carrier-containing support followed by drying and calcination to form the CO preferential oxidation catalyst.Type: ApplicationFiled: August 31, 2007Publication date: March 5, 2009Inventors: CHAO-YUH CHEN, Ching-Tsuen Huang, Chi-Hung Liao, Ching-Tu Chang
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Patent number: 7488431Abstract: The present invention discloses a lipiodol-ferrofluid, and a process for preparation thereof, wherein the lipiodol-ferrofluid includes the ferrofluid including a magnetic component, ?-Fe2O3 or Fe3O4; and the lipiodol.Type: GrantFiled: June 7, 2006Date of Patent: February 10, 2009Assignee: Institute of Nuclear Energy Research Atomic Energy CouncilInventors: Jen-Chieh Chung, Min-Nan Chen, Ching-Tsuen Huang
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Patent number: 7482387Abstract: A method for processing spent ion-exchange resins is provided by reducing the volume of the spent ion-exchange resins through a wet oxidation process and solidifying the residual wet oxidation slurry and the waste solution with high efficiency. The method comprises of using barium hydroxide as a neutralization agent to adjust pH of the reaction solution so as to drive away ammonia from the solution, and as a conversion agent to convert sulfuric acid and sulfate obtained in the reaction into barium sulfate. The process can solidify the wet oxidation residue slurry and waste solution with high efficiency.Type: GrantFiled: February 17, 2004Date of Patent: January 27, 2009Assignee: Institute of Nuclear EnergyInventors: Ching-Tsuen Huang, Tzeng-Ming Liu, Jiing-Guang Tyen
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Publication number: 20070190179Abstract: The present invention discloses a Lipiodol-ferrofluid, and a process for preparation thereof, wherein the Lipiodol-ferrofluid includes the ferrofluid including a magnetic component, ?-Fe2O3 or Fe3O4; and the Lipiodol.Type: ApplicationFiled: June 7, 2006Publication date: August 16, 2007Inventors: Jen-Chieh Chung, Min-Nan Chen, Ching-Tsuen Huang
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Publication number: 20050182147Abstract: A method for processing spent ion-exchange resins is provided by reducing the volume of the spent ion-exchange resins through a wet oxidation process and solidifying the residual wet oxidation slurry and the waste solution with high efficiency. The method comprises of using barium hydroxide as a neutralization agent to adjust pH of the reaction solution so as to drive away ammonia from the solution, and as a conversion agent to convert sulfuric acid and sulfate obtained in the reaction into barium sulfate. The process can solidify the wet oxidation residue slurry and waste solution with high efficiency.Type: ApplicationFiled: February 17, 2004Publication date: August 18, 2005Inventors: Ching-Tsuen Huang, Tzeng-Ming Liu, Jiing-Guang Tyen
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Patent number: 6833123Abstract: A method for removing at least one of chromate and other oxy-metal ions from liquid solutions includes contacting the liquid solution with solid barium compounds as adsorbents so that the at least one of chromate and other oxy-metal ions in liquid solution are subject to an exchange reaction with the anion of solid barium compounds to produce products including at least one of solid barium chromate and oxy-metal barium compounds and are removed from the liquid solution by a liquid-solid separation operation. A method for stabilizing at least one of chromate and other oxy-metal ions that are present in liquid or sludge wastes includes mixing the liquid or sludge wastes with barium compounds in solid form, so that the at least one of chromate and oxy-metal ions are immobilized in a solidified body after curing of the mixture.Type: GrantFiled: December 13, 2000Date of Patent: December 21, 2004Assignee: Institute of Nuclear Energy ResearchInventors: Ching-Tsuen Huang, Tzeng-Ming Liu, Tsye-Shing Lee, Wen-Chao Lai
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Patent number: 6436025Abstract: This invention discloses a method for the co-solidification of low-level radioactive wet wastes of BWR nuclear power plants, including concentrate waste, spent ion exchange resins and sludge wastes etc., with very high volume efficiency. In this invention, for promoting the stability of the solidified waste, sodium sulfate in the concentrate solution is converted to sodium hydroxide and barium sulfate by reacting with barium hydroxide. The conversion product barium sulfate possessing high density and stability is insoluble and used as a fine aggregate material in the solidified waste. Sodium hydroxide is used to stabilize ion exchange resins and to form a highly water-durable solidified waste form with silicates and phosphates in the solidification agent mixture. The solidification agent used in this invention is a formulated powder mixture completely made from inorganic materials. Therefore, there is no aging problem of the solidified waste.Type: GrantFiled: March 21, 2000Date of Patent: August 20, 2002Assignee: Institute of Nuclear Energy ResearchInventors: Ching-Tsuen Huang, Jiing-Guang Tyen, Da-Luh Lu, Tzeng-Ming Liu, Tsye-Shing Lee
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Publication number: 20020044908Abstract: This invention discloses a method for removing and stabilizing liquid chromate ion and other oxy-metal ions with barium compounds.Type: ApplicationFiled: December 13, 2000Publication date: April 18, 2002Inventors: Ching-Tsuen Huang, Tzeng-Ming Liu, Tsye-Shing Lee, Wen-Chao Lai