Abstract

A continuous dynamic mixing assembly includes a mixing chamber having an interior wall which is generally symmetrical about a central longitudinal axis. Flowable material is mixed in the mixing chamber. At least one inlet introduces the flowable material into the mixing chamber. At least one outlet discharges mixed flowable material from the mixing chamber. Axial baffles are connected to and extend along the interior wall for disrupting substantially circumferential material flow in the mixing chamber. Transverse baffles are connected to and extend from the interior wall transverse to the axis along a major dimension of the transverse baffles. A rotatable agitator includes agitator baffles extending transverse to the axis in alignment with respective transverse baffles, which forms gaps between the agitator baffles and the respective transverse baffles. The transverse baffles and the agitator baffles disrupt substantially axial fluid flow inside the mixing chamber while forcing the material through the gaps. Also featured is a method in which the mixing assembly is used.

IPC Classes  ?

• B01F 9/08 - Mixers with rotating receptacles rotating about a horizontal or inclined axis, e.g. drum mixers with rotating stirring devices
• D21B 1/34 - Kneading or mixingPulpers

Abstract

A short oxygen delignification method employs a continuous dynamic mixing assembly. Provided is a mixing chamber having an interior wall which is generally symmetrical about a central longitudinal axis. At least one inlet is used to introduce flowable material into the mixing chamber. The flowable material includes paper pulp, a basic compound, optional steam and an oxygen-containing gas. Lignin is bound to the paper pulp. There is at least one outlet from the mixing chamber. At least one axial baffle is connected to and extends along the interior wall for disrupting substantially circumferential fluid flow in the mixing chamber. At least one transverse baffle is connected to and extends from the interior wall transverse to the axis. A rotatable agitator includes at least one agitator baffle extending transverse to the axis at a location in alignment with a respective transverse baffle. This forms at least one gap between the at least one agitator baffle and the at least one respective transverse baffle. The at least one transverse baffle and the at least one agitator baffle disrupt substantially axial fluid flow. The paper pulp fluid is forced to travel through the at least one gap. A short delignification reaction occurs inside the mixing chamber. Delignified paper pulp fluid leaves the mixing chamber through the at least one outlet.

IPC Classes  ?

• D21C 3/02 - Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
• D21C 9/00 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters

Goods & Services

Professional [, home, and mobile ] audio, and electronic equipment and accessories, namely, adapters, ambience and surround sound processors, amplifiers, [ antennas, band separators, bridgeable amplifiers, ] electrical and optical cables, carrying cases and carrying bags, electrical connectors, [ radios incorporating clocks, coaxial audio speakers, ] computers, [ audio speaker crossovers, ] electric power supply units, [ FM universal modulators, graphic equalizers, ] headphones, [ loudspeakers, racks and ] stands specifically designed to support or tilt loudspeakers and parts therefore, microphones, [ power inverters, powered subwoofers, ] pre-amplifiers, [ radio receivers, radio transmitters, ] audio [ and video ] receivers, remote controls, signal processors, [ speaker cabinets, speaker selectors, electric power strips, subwoofers, ]voltage surge protectors, electrical transformers, [ triaxial audio speakers, tuners, game switches, tweeters, terminators and signal reducers, dubbing apparatus, ] signal amplifiers, signal splitters, stereo sound simulators, electrical transformers and noise filters, electrical and optical switching units, and junction boxes, volume and level controls, wireless headphones, [ loudspeakers, ] receivers, remote controls and transmitters, electrical and optical wires, dynamic signal processors, digital signal processors, encoding and decoding processors, audio mixers, [ electronic crossovers, ]audio distribution amplifiers, audio summing amplifiers, signal and level translators, electronic patch bays and routers, in-ear audio head sets and molded adapters

Goods & Services

electronic device for allowing recording or live production personnel to receive audio information during recording or production, namely, intercoms

Goods & Services

Professional [, home, and ] mobile audio, and electronic equipment and accessories, namely, adapters, [ ambience and surround sound processors, ] amplifiers, [ antennas, band separators, ] bridgeable amplifiers, electrical and optical cables, carrying cases and carrying bags, electrical connectors, [ radios incorporating clocks, coaxial audio speakers, computers, audio speaker crossovers, ] electric power supply units, [ FM universal modulators, graphic equalizers, ] headphones, [ loudspeakers, ] [ racks and stands specifically designed to support or tilt loudspeakers and parts therefore, ] microphones, [ power inverters, powered subwoofers, ] pre-amplifiers, [ radio receivers, radio transmitters, audio and video receivers, ] remote controls, signal processors, [ speaker cabinets, speaker selectors, electric power strips, subwoofers, voltage surge protectors, electrical transformers, triaxila audio speakers, tuners, game switches, tweeters, terminators and signal reducers, dubbing apparatus, ] signal amplifiers, [ signal splitters, stereo sound simulators, electrical transformers and noise filters, ] electrical and optical switching units, [ and junction boxes, ] volume and level controls, [ wireless headphones, loudspeakers, receivers, remote controls and transmitters, ] electrical and optical wires, dynamic signal processors, digital signal processors, encoding and decoding processors, audio mixers, [ electronic crossovers, audio distribution amplifiers, audio summing amplifiers, signal and level translators, ] electronic [ patch bays and ] routers, in-ear audio head sets [ and molded adapters ]

Goods & Services

Electronic device for allowing recording or live production personnel to receive audio information during recording or production, namely, intercoms

Goods & Services

Electronic device for allowing recording studio personnel to communicate with vocal talent or musicians in the studio, namely, intercoms