The present disclosure generally relates to a motor driven, high velocity decanter, and more particularly to a decanter which incorporates a horizontal rotating bowl and a rotating scroll. The decanter is capable of separating particulate material or solids from a liquid. A motor is coupled to and drives the bowl. Rotational power is transferred from the bowl to the scroll through a gearbox. An adjustable speed brake is coupled to the scroll to affect the differential speed between the bowl and the scroll. In one example, the adjustable speed brake is a positive displacement pump.

In described embodiments, a system of processing poultry plant dissolved air floatation (DAF) float includes a horizontal decanter centrifuge having a weir ring. In conjunction with operating the centrifuge with a laminar flow, adjusted feed rate and polymer dosing, the system allows for production of low moisture solids (<50%) from the poultry plant DAF float and discharge of a clear liquid phase.

A vertical cuttings dryer (VCD) can be used to separate solid particulate from entrained liquid. In some examples, the VCD includes a screen mounted coaxially with an internal wiper housing that carriers a wiper sweeping out an annular space between the screen and wiper housing. The VCD may have a first motor connected through drive shaft to the screen and a second motor connect through a separate drive shaft to the wiper housing. A controller can independently control the speed of the first motor and the second motor to independently a magnitude of centrifugal force applied to material being processed as well as a residence time of the material being processed in the annular space.

A method for monitoring a screw centrifuge, such as a solid-bowl or a screen-type screw centrifuge. The screw centrifuge processes a product so that solids conveyed out of the drum with the screw are removed from the product. A current angular speed and an average angular speed of the transmission input shaft for the screw over time are determined. The current and average angular speeds are evaluated and a warning signal and/or changing one or more operating parameters of the screw centrifuge is changed if dynamic changes in the angular speed are detected during the evaluation.

A feedback control method accounts for noise emissions of a centrifuge for the operation of a centrifuge, in particular a separator or a decanting centrifuge, for the centrifugal processing of a product, in particular for clarifying a product and/or for separating a product into different liquid phases using the drum.

A funnel element having an open end and a closed pointed end configured to receive a multi-component fluid containing a solid fraction. The solid fraction can comprise cellular material that sediments toward the closed pointed end to form a cell pack. A wash fluid can be pumped through the cell pack to entrain microparticles and soluble contaminants. The wash fluid can be introduced into the funnel element below the cell pack such that the wash fluid percolates through the cell pack. The percolating wash fluid can dislodge microparticles or other contaminants trapped within the cell pack. Additional wash fluids can be added to funnel element where excess wash fluids overflow from the funnel element through the open end of the funnel element.

A method and system for separating a suspension into solid and fluid components. The suspension is centrifuged about a substantially vertical axis of rotation to concentrate solid components in a first lower flow stream and fluid components in a first upper flow stream. The first upper flow stream may be centrifuged about a substantially vertical axis of rotation to concentrate solid components in a second lower flow stream and fluid components in a second upper flow stream. The first lower flow stream, the second lower flow stream, or both, may be centrifuged about a substantially horizontal axis of rotation to separate water from stackable dry tailings. The method and system may be applied to separation of tailings or other suspensions.

A method for monitoring a screw centrifuge, such as a solid-bowl or a screen-type screw centrifuge. The screw centrifuge processes a product so that solids conveyed out of the drum with the screw are removed from the product. A current angular speed and an average angular speed of the transmission input shaft for the screw over time are determined. The current and average angular speeds are evaluated and a warning signal and/or changing one or more operating parameters of the screw centrifuge is changed if dynamic changes in the angular speed are detected during the evaluation.

A solid-bowl screw centrifuge is provided for the separation of multiphase material. The solid-bowl screw centrifuge has a centrifuge drum that is rotatable around an axis and the centrifuge drum has at least one outlet for discharging a phase of the material from the centrifuge drum. The outlet has a restrictor controlled by a floating body that floats on the material to adjust the outlet automatically in accordance with a liquid level of the material in the centrifuge drum, and the liquid level, in turn, is dependent on the throughput of the material. The restrictor may include a weighted body that is subjected to centrifugal force and also may include a restricting body arranged in a discharge port of the outlet. The outlet may include a deflection device for changing direction of the material flowing out to a direction that is transverse to the longitudinal axis.

The present disclosure generally relates to a motor driven, high velocity decanter, and more particularly to a decanter which incorporates a horizontal rotating bowl and a rotating scroll. The decanter is capable of separating particulate material or solids from a liquid. A motor is coupled to and drives the bowl. Rotational power is transferred from the bowl to the scroll through a gearbox. An adjustable speed brake is coupled to the scroll to affect the differential speed between the bowl and the scroll. In one example, the adjustable speed brake is a positive displacement pump.