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:
May. 15, 2007
Filed:
Mar. 22, 2000
Bengt Nilsson, Skoghall, SE;
Bengt Nilsson, Skoghall, SE;
Chemrec Aktiebolag, Stockholm, SE;
Abstract
Process for the recovery of chemicals and energy from spent liquor obtained in the chemical pulping process, in which the spent liquor is gasified under sub-stoichiometric conditions to produce partly one phase of solid and/or fused material, together with partly one phase of a flammable gaseous material, whereafter the said phases are cooled by direct contact with a cooling medium (), is separated from the said phase of flammable gaseous material in order to be dissolved and collected up as a product liquid in a product liquid receiver (). According to the invention, the said cooling medium () consists of an essentially water-free cooling medium, which after vaporizing/cracking increases the calorific value of the flammable gaseous material drawn off. At the same time, the process is improved in this way since the flammable gases can be used more effectively for the purpose of e.g. generating energy.