Patents by Inventor Ben-Li Pen

Ben-Li Pen 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).

  • Patent number: 7998439
    Abstract: A separation and recycling method for recycling uranium and fluoride from a waste liquid sequentially and separately is disclosed. The method comprises a uranium-recycling process and a fluoride-recycling process. In the uranium-recycling process, an alkali metal compound or monovalent cation and a coagulant aid are added into the waste liquid to promote the precipitation of uranium. In the fluoride-recycling process, an alkaline earth metal compound, a strong acid and a coagulant aid are added into the uranium-removed waste liquid to precipitate fluoride. By means of the method of the present invention, the uranium and fluoride contents of the uranium-removed and fluoride-removed waste liquid are compliant with the effluent standards of the environmental laws.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: August 16, 2011
    Assignee: Institute of Nuclear Energy Research
    Inventors: Chen-Te Lin, Kuo-Hao Tsao, Ben-Li Pen
  • Publication number: 20100316543
    Abstract: A separation and recycling method for recycling uranium and fluoride from a waste liquid sequentially and separately is disclosed. The method comprises a uranium-recycling process and a fluoride-recycling process. In the uranium-recycling process, an alkali metal compound or monovalent cation and a coagulant aid are added into the waste liquid to promote the precipitation of uranium. In the fluoride-recycling process, an alkaline earth metal compound, a strong acid and a coagulant aid are added into the uranium-removed waste liquid to precipitate fluoride. By means of the method of the present invention, the uranium and fluoride contents of the uranium-removed and fluoride-removed waste liquid are compliant with the effluent standards of the environmental laws.
    Type: Application
    Filed: December 29, 2009
    Publication date: December 16, 2010
    Applicant: INSTITUTE OF NUCLEAR ENERGY RESEARCH
    Inventors: Cheng-Te Lin, Kuo-Hao Tsao, Ben-Li Pen
  • Patent number: 7621713
    Abstract: An automatic pallet loading/unloading method for radioactive waste drums is disclosed, which comprises the steps of: (a) providing a conveying pallet accommodating six radioactive waste drums; (b) arranging the pallet on a specific importing carrier; (c) performing a two-dimensional fetching position adjustment upon the pallet by the importing carrier; and (d) using a grabber crane to grab and carry the radioactive waste drums in a specific order so as to apply an continuous inspection process upon each radioactive waste drum successively. In a preferred aspect, the two-dimensional fetching position adjustment uses a transverse positioning operation cooperating with a lengthwise positioning operation to successively place each radioactive waste drum in a specific position to be grabbed by the grabber crane and thus to be inspected by the inspection process.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: November 24, 2009
    Assignee: Institute of Nuclear Energy Research Atomic Energy Council
    Inventors: Ben-Li Pen, Gou-Hao Tsao, Tzu-Chung Yenn, Dah-Ping Wang
  • Publication number: 20070197850
    Abstract: An automatic pallet loading/unloading method for radioactive waste drums is disclosed, which comprises the steps of: (a) providing a conveying pallet accommodating six radioactive waste drums; (b) arranging the pallet on an specific importing carrier; (c) performing a two-dimensional fetching position adjustment upon the pallet by the importing carrier; and (d) using a grabber crane to grab and carry the radioactive waste drums in a specific order so as to apply an continuous inspection process upon each radioactive waste drum successively. In a preferred aspect, the two-dimensional fetching position adjustment uses a transverse positioning operation cooperating with a lengthwise positioning operation to successively place each radioactive waste drum in a specific position to be grabbed by the grabber crane and thus to be inspected by the inspection process.
    Type: Application
    Filed: August 18, 2006
    Publication date: August 23, 2007
    Inventors: Ben-Li Pen, Gou-Hao Tsao, Tzu-Chung Yenn, Dah-Ping Wang
  • Patent number: 5188736
    Abstract: A new chemical separation process was developed in this invention using 2-methoxyethanol or methyl collosolve (MCS) and ethylene glycol (EG) as separation agents, to separate the valuable extractants such as di(2-ethylhexyl) phosphoric acid(D2EHPA), tri n-octyl-phosphine oxide (TOPO) from spent solvent and to recover the extractants. The process comprises separation and recovery sections. In the separation section the extractants were removed by the polar solution from spent solvent based on the difference of miscibilities. In the recovery section, the polar solution loaded with extractants was distillated under vacuum to remove MCS as a distillate and water was added to the bottom product to facilitate the separation of the extractants. By using this novel process, 99% of D2EHPA and 70% of TOPO in the spent solvent were separated and 98% of D2EHPA was recovered. MCS and EG can be regenerated and reused in the process.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: February 23, 1993
    Assignee: Institute of Nuclear Energy Research
    Inventors: Ben-Li Pen, Dah-Ping Wang, Ying-Chu Hoh, Kuo-Hao Tsao