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:
Sep. 15, 2015
Filed:
Jul. 18, 2008
Petri Kukkonen, Helsinki, FI;
Pekka Knuuttila, Porvoo, FI;
Pekka Jokela, Espoo, FI;
UPM-KYMMENE CORPORATION, , FI;
Abstract
The invention relates to a method and apparatus for producing synthesis gas () from biomass (). The method comprises a step for producing raw product gas (), and a purifying step comprising several processing steps performed in gas processing means () for converting the raw product gas () to synthesis gas (). One processing step is a carbon dioxide removal step for separating carbon dioxide from the stream of raw product gas () in a gas processing means comprising a gas purificator (). The method comprises a step for feeding a stream of the carbon dioxide () from the gas purificator () to at least one part of the apparatus, said at least one part of the apparatus being selected from: the biomass supply system (), the gasifier () and at least one of the gas processing means ().