The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2005
Filed:
Jan. 30, 2003
C. Bertil Stromberg, Bolton Landing, NY (US);
Aaron T. Leavitt, Alpharetta, GA (US);
J. Robert Prough, Saratoga Springs, NY (US);
C. Bertil Stromberg, Bolton Landing, NY (US);
Aaron T. Leavitt, Alpharetta, GA (US);
J. Robert Prough, Saratoga Springs, NY (US);
Andritz, Inc., Glens Falls, NY (US);
Abstract
A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability, and maintainability by eliminating the high pressure transfer device conventionally used in the prior art. Instead of a high pressure transfer device the steamed and slurried chips are pressurized using a single vane slurry pump in series with a centrifugal slurry pump both of which are located at least thirty feet below the top of the treatment vessel and for pressurizing the slurry to a pressure of at least about 10 bar gauge.