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:
Nov. 19, 2013
Filed:
Jun. 16, 2005
Rune Brusletto, Jar, NO;
Odd Egil Solheim, Hvalstad, NO;
Hans Rasmus Holte, Reistad, NO;
Abstract
A method for production of fuel pellets from a biological material, preferably saw dust, wood or similar, where the method comprises the following steps: supplying the material to a drying step () and dry the material to a relative humidity from 40-65 weight-percent to 30-45 weight-percent; supplying the material from the dryer step (), optionally via an intermediate storage step (), to a reactor step (') and heat the material to 200-300° C. by supply of steam; keeping the material in the reactor at the achieved temperature in sufficient time to soften the material; reducing the pressure of the reactor step (′) in at least two steps, in order to defibrate the material and release of lignin, and supply the material from the reactor step (′) to an additional drying step (), optionally via an intermediate storage step (), and optionally pelletizing of the material.