Patents by Inventor Lixiang LU

Lixiang LU 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).

  • Soda ash and sodium bicarbonate production method
    Patent number: 12264079
    Abstract: A soda ash and sodium bicarbonate production method is provided, in which solution mining, pretreatment, stripping, concentration, sodium carbonate decahydrate crystallization, separation, dissolution, sodium carbonate monohydrate crystallization, separation and drying are performed to obtain dense soda ash. A dissolved sodium carbonate decahydrate solution or a concentrated brine 3 is subjected to crystallization, separation and drying to produce sodium bicarbonate. A discharge liquid 1 generated in the sodium carbonate decahydrate crystallization and separation is subjected to causticization and evaporation to recycle sodium carbonate. Causticized sludge generated in causticization is calcined and then recycled for causticization. The process provided herein maximizes the resource utilization.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: April 1, 2025
    Assignee: CHINA TIANCHEN ENGINEERING CORPORATION
    Inventors: Jigang Wang, Lixiang Lu, Qingtian Feng
  • SODA ASH AND SODIUM BICARBONATE PRODUCTION METHOD
    Publication number: 20230103792
    Abstract: A soda ash and sodium bicarbonate production method is provided, in which solution mining, pretreatment, stripping, concentration, sodium carbonate decahydrate crystallization, separation, dissolution, sodium carbonate monohydrate crystallization, separation and drying are performed to obtain dense soda ash. A dissolved sodium carbonate decahydrate solution or a concentrated brine 3 is subjected to crystallization, separation and drying to produce sodium bicarbonate. A discharge liquid 1 generated in the sodium carbonate decahydrate crystallization and separation is subjected to causticization and evaporation to recycle sodium carbonate. Causticized sludge generated in causticization is calcined and then recycled for causticization. The process provided herein maximizes the resource utilization.
    Type: Application
    Filed: December 5, 2022
    Publication date: April 6, 2023
    Inventors: Jigang WANG, Lixiang LU, Qingtian FENG