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. 14, 2017
Filed:
Jan. 29, 2014
Outotec (Finland) Oy, Espoo, FI;
Outotec (Finland) Oy, Espoo, FI;
Abstract
The invention relates to a stirred tank reactor for gas-liquid mass transfer in a slurry. The reactor includes a reactor tank () having a first volume (V), a drive shaft () that extends vertically in the reactor tank, a motor () for rotating the drive shaft (), a main impeller () which is a downward pumping axial flow impeller attached to the drive shaft () to create a main flow pattern in the reactor tank, and a gas inlet () arranged to supply gas into the reactor tank () to be dispersed to the liquid. The reactor includes a mechanical gas sparging apparatus () comprising a dispersion chamber () having a second volume (V) which is substantially smaller than the first volume (V) of the reactor tank (), the dispersion chamber being arranged coaxial with the drive shaft (), and the gas inlet () being arranged to feed gas into the dispersion chamber (), and mixing means () arranged within the dispersion chamber () for mixing the gas into liquid by dispersing the gas to fine bubbles before the bubbles enter the main flow pattern. The mixing power per unit volume inside the dispersion chamber () is significantly larger than the mixing power elsewhere in the reactor.