A solid-jacket screw centrifuge is disclosed. The centrifuge has a rotatable drum with a horizontal axis of rotation which encloses a bowl with a rotatable screw, an inlet for introducing material to be centrifuged into the bowl, at least one liquid and at least one solid discharge, where at least the solid discharge is assigned a non-rotatable housing surrounding it, at least radially bounding a discharge chamber, where the discharge chamber is designed as a drying chamber for the solid matter and has axial walls and one or more walls in the radial direction. The housing extends axially parallel to the axis of rotation at most into the conical region of the drum or the screw.

In a cell washing centrifuge for washing living cells such as blood cells, control of the remaining amount of a supernatant according to the related art greatly depends on controlling the rotation speed of a motor, and thus a highly accurate motor control part is required to prevent overshooting or the like. In place of the related art, an easy control method is required. In the discharging of a supernatant discharge by a centrifuge having a plurality of test tube holders that can radially swing through centrifugal force, a holding part using an electromagnet that can control the swinging of the test tube holders, and a cleaning liquid distribution element that supplies a cleaning liquid into a test tube, a first decanting operation ({circle around (3)}-1) is performed by rotating a rotor in the order of acceleration, settling, and deceleration in a state in which the agitating angle of the test tube is restricted and discharging the supernatant of the cleaning liquid from the test tube, and a second decanting operation ({circle around (3)}-2) is performed, at a time of a final decanting operation, by accelerating the rotor, releasing restriction on the agitating angle during the acceleration, and then decelerating the rotor.

In a cell washing centrifuge for washing living cells such as blood cells, control of the remaining amount of a supernatant according to the related art greatly depends on controlling the rotation speed of a motor, and thus a highly accurate motor control part is required to prevent overshooting or the like. In place of the related art, an easy control method is required. In the discharging of a supernatant discharge by a centrifuge having a plurality of test tube holders that can radially swing through centrifugal force, a holding part using an electromagnet that can control the swinging of the test tube holders, and a cleaning liquid distribution element that supplies a cleaning liquid into a test tube, a first decanting operation ({circle around (3)}-1) is performed by rotating a rotor in the order of acceleration, settling, and deceleration in a state in which the agitating angle of the test tube is restricted and discharging the supernatant of the cleaning liquid from the test tube, and a second decanting operation ({circle around (3)}-2) is performed, at a time of a final decanting operation, by accelerating the rotor, releasing restriction on the agitating angle during the acceleration, and then decelerating the rotor.

A drill cuttings solidification system includes a cuttings tank for storage of a drill cuttings material, an additive tank for storage of a solidification material, and a solidification chamber. The cuttings tank and the additive tank are operatively connected to a portable unit. The cuttings tank includes a cuttings auger assembly for conveyance of the drill cuttings material to a cuttings outlet. The additive tank includes an additive auger assembly for conveyance of the solidification material to an additive outlet. The solidification chamber includes a housing enclosing the cuttings outlet and the additive outlet, and an impeller for mixing drill cuttings material transferred through the cuttings outlet and solidification material transferred through the additive outlet. The system further includes a discharge assembly extending from the solidification chamber to a discharge outlet. The discharge assembly is configured to rotate and vertically pivot a discharge conduit relative to the portable unit.

A drill cuttings solidification system includes a cuttings tank for storage of a drill cuttings material, an additive tank for storage of a solidification material, and a solidification chamber. The cuttings tank and the additive tank are operatively connected to a portable unit. The cuttings tank includes a cuttings auger assembly for conveyance of the drill cuttings material to a cuttings outlet. The additive tank includes an additive auger assembly for conveyance of the solidification material to an additive outlet. The solidification chamber includes a housing enclosing the cuttings outlet and the additive outlet, and an impeller for mixing drill cuttings material transferred through the cuttings outlet and solidification material transferred through the additive outlet. The system further includes a discharge assembly extending from the solidification chamber to a discharge outlet. The discharge assembly is configured to rotate and vertically pivot a discharge conduit relative to the portable unit.

A centrifuge for separating, in a massecuite, a quantity of sugar crystals from a syrup, the centrifuge including at least: a centrifuge basket into which the massecuite is intended to be introduced, and which has a peripheral wall; a measurement device including at least one light source designed to illuminate the peripheral wall over at least 90% of its height; and a photodetection system designed to detect light reflected by the peripheral wall over at least 90% of its height and to deliver photodetection measurements which are representative of the massecuite accumulating on the peripheral wall or of the peripheral wall itself; and a processing unit connected to the measurement device and designed to continuously process the photodetection measurements in real time.

A centrifuge for separating, in a massecuite, a quantity of sugar crystals from a syrup, the centrifuge including at least: a centrifuge basket into which the massecuite is intended to be introduced, and which has a peripheral wall; a measurement device including at least one light source designed to illuminate the peripheral wall over at least 90% of its height; and a photodetection system designed to detect light reflected by the peripheral wall over at least 90% of its height and to deliver photodetection measurements which are representative of the massecuite accumulating on the peripheral wall or of the peripheral wall itself; and a processing unit connected to the measurement device and designed to continuously process the photodetection measurements in real time.

A method for preparing a purified cyclic compound composition includes providing in a reactor a reaction mixture containing a cyclizable linear compound and reacting the cyclizable linear compound to obtain a crude composition containing at least one cyclic compound, feeding a portion of the crude composition obtained to a precipitator, the crude composition cooled to a precipitation temperature below the solubility temperature of the cyclic compound contained for precipitating a portion thereof to obtain precipitated solid cyclic compound and unprecipitated liquid, separating a portion of the precipitated solid cyclic compound to obtain a solid cyclic compound fraction and unprecipitated liquid fraction, and washing the solid cyclic compound fraction obtained with a washing solvent having a temperature of above the precipitation temperature to obtain a washing solvent fraction and as purified cyclic compound composition a washed solid cyclic compound fraction.

A method for preparing a purified cyclic compound composition includes providing in a reactor a reaction mixture containing a cyclizable linear compound and reacting the cyclizable linear compound to obtain a crude composition containing at least one cyclic compound, feeding a portion of the crude composition obtained to a precipitator, the crude composition cooled to a precipitation temperature below the solubility temperature of the cyclic compound contained for precipitating a portion thereof to obtain precipitated solid cyclic compound and unprecipitated liquid, separating a portion of the precipitated solid cyclic compound to obtain a solid cyclic compound fraction and unprecipitated liquid fraction, and washing the solid cyclic compound fraction obtained with a washing solvent having a temperature of above the precipitation temperature to obtain a washing solvent fraction and as purified cyclic compound composition a washed solid cyclic compound fraction.

Disclosed is a continuous centrifugal dewatering device including an external case having an internal space, a feed supply pipe to which a slurry as a mixture of a solid and a liquid is supplied, a basket provided inside the external case, a plurality of holes formed in the basket, a pusher plate provided inside the basket and configured to discharge a slurry cake attached to an inner circumferential surface of the basket to the outside of the external case, a non-contact seal configured to prevent the first gas from flowing into a space between the external case and the basket, and a gas inlet to which a second gas, which flows in a reverse direction with respect to a flow direction of the first gas flowing to the space between the external case and the basket, is supplied.