Patents Assigned to Anstalt Gemass
  • Method for continuous hydrolysis of pentose containing material and apparatus for implementing the method
    Patent number: 4025356
    Abstract: Method and apparatus for the continuous acid hydrolysis of pentosan-containing material at a temperature between 80.degree. and 120.degree. C and at a pH lower than 5. At least two portions of hydrolysate are re-cycled back into the hydrolysis vessel. One recycle portion having a lower acid concentration is supplemented with additional acid before being returned to the hydrolysis vessel.
    Type: Grant
    Filed: January 13, 1975
    Date of Patent: May 24, 1977
    Assignee: Anstalt Gemass
    Inventors: Gustaf Arthur Nyman, Gote Savo