Patents Assigned to GRAPHEX GROUP LIMITED
  • Patent number: 12637375
    Abstract: The application discloses a processing method for graphite acid purification wastewater which comprises processing steps of neutralization and precipitation preprocessing, supernatant electrically distilling and vaporizing, electric energy recycling, condensate recycling and vaporization residue regularly discharging. The processing method performs neutralization and precipitation preprocessing to obtain neutralized supernatant, pumps the supernatant into an electric distiller to be vaporized and obtain electric energy for recycling through steam turbine, and acquires vaporization condensate by residual heat exchange. The vaporization condensate reaches the standard of graphite acid purification impurities such as fluorine, chlorine, aluminum, silicon, iron, magnesium, copper, and zinc and the wastewater discharge standard. The steam heat energy can be recycled and transformed into electric energy to save processing cost.
    Type: Grant
    Filed: July 2, 2023
    Date of Patent: May 26, 2026
    Assignee: GRAPHEX GROUP LIMITED
    Inventors: Frank Yu, Liqun Luo, Bin Qiu, Ting Jia, Xiaoxue Zhang