Erth Technologies, Inc.

Nested Nozzle Mixers, Inc.

Gary D Matzen

Ernest Peter Tovani

Paul J Cornay

A mixer designed to generate high mixing turbulence within the bottom zone of a liquid holding vessel while simultaneously entraining and transferring liquid from the upper surface down to the vessel bottom. Mixing action is accomplished through the incorporation of two jet nozzles, nested one inside the other, strategically located and powered by pressurized liquid drawn from the vessel being mixed. Mixer component dimensions are adaptable to multiple vessel types and configurations. Surface liquids are entrained using a weir section that is either a fixed or floating component of the mixer assembly. Liquid used for developing outlet velocity in primary jet is drawn from multiple locations including the vessel center zone, the vessel bottom and mixer annulus. Mixing in the vessel center zone can vary from gentle upward flow in tall tanks to complete turbulent mixing in shallow vessels.

Nested nozzle mixer

A high pressure mixer is designed to generate high mixing turbulence within the bottom zone of a liquid holding vessel while simultaneously entraining and transferring liquid from the upper surface down to the vessel bottom. Mixing action is accomplished through the incorporation of two jet nozzles, nested one inside the other, strategically located and powered by pressurized liquid drawn from the vessel being mixed. Surface liquids are entrained using a weir section that is either a fixed or floating component of the mixer assembly. Liquid used for developing outlet velocity in primary jet is drawn from multiple locations including the vessel center zone, the vessel bottom and mixer annulus. Vessel pressure is maintained sufficiently high for a period to create a high concentration of dissolved gas in the slurry during digester operation. After shutting off the mixer pressure is lowered to release dissolved gas resulting in a three region segregation of slurry components.

Pressurized digester vessel

A two-tube centrifuge separates light material and heavy material from an input mixture. A hollow drive shaft rotates a central body member about an axis of rotation. Two hollow arm assemblies, each having circular cross-section, are mounted on diametrically opposite sides of the central body. Each arm assembly includes an outer housing tube, an intermediate tube, and an inner tube that is longer than the intermediate tube. An end cap having a removable plug is mounted on the outer end of the housing-tube of each arm assembly. The inner ends of all three tubes are mechanically interlocked in a manner to cantilever mount the inner and intermediate tubes to the central-body with their outer ends spaced from the internal surface of the end cap. An input-mixture path extends through the hollow drive shaft, through the central-body, and into a cylindrical space between the inner and intermediate tubes of each arm assembly. A heavy material exit path extends from the inner tube, through the central body, and into an exit cone that lies diametrically opposite the drive shaft and whose axis is coincident with the axis of rotation. A light material exit path extends from a cylindrical space between the inner and intermediate tubes, through the central-body, and through a wall of the exit cone. The inner tube of each arm assembly includes an auger. An electric motor drives the drive shaft. A hydraulic motor drives the auger. An oxidation reactor in a centrifuge for decanting lighter material from heavier material from a mixture of initial material and to perform an oxidation reaction process on the heavier material.

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Longmont, CO, United States of America

Gary D Matzen