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:
Jul. 09, 2024
Filed:
Feb. 25, 2019
Teknologian Tutkimuskeskus Vtt Oy, Espoo, FI;
Anja Oasmaa, Espoo, FI;
Hannu Minkkinen, Tampere, FI;
Christian Lindfors, Espoo, FI;
Jani Lehto, Jyväskylä, FI;
Juha Mannila, Tampere, FI;
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY, Espoo, FI;
Abstract
A method and apparatus for thermolysing organic material. The method comprises steps of: A) feeding the material in a single-screw extruder (), the extruder comprising —a cylindrical rotor member () having diameter (D) and length (L) and comprising a feeding zone (), —the rotor member () arranged in a barrel (), —the cylindrical surface of the rotor member () carrying cavity/cavities and/or projection(s) () arranged in helically extending rows, —the helically extending row(s) of the rotor member () having a pitch (P) and depth (d) in the feeding zone () of the rotor member, wherein —the relation of the depth (d) to the diameter (D) of the rotor member, i.e. d:D, is not more than 1:20, and —the relation of the pitch (P) of the rotor member to the diameter (D) of the rotor member, i.e. P:D, is not more than 1:4, B) heating the material in the single-screw extruder () to a flowable state, and C) thermolysing the material.