Abstract: Exemplary embodiments relate to a system for monitoring the temperature and adjusting a densifier having a compression screw. The system may include at least one temperature sensor adapted to monitor the temperature of or adjacent to the compression screw and a control system in electrical communication with a motor and the at least one temperature sensor and adapted to vary a speed or stop the compression screw based on input from the at least one temperature sensor.

Abstract: A screw pipe unit intended to cooperate with and at least partly enclose a screw in a plug screw feeder for cellulose chips/pulp is provided. The screw pipe unit comprises a plurality of openings for filtrate dewatered from the chips/pulp in the screw pipe when the plug screw feeder is in operation. The screw pipe is, on at least a portion of its inner surface, provided with bars inclined with respect to the longitudinal axis of the screw pipe. The angle of inclination of the bars decreases in the longitudinal direction, from a first portion of the screw pipe unit with maximum inclination to a second portion of the screw pipe unit with bars substantially parallel to the axis, the second portion being further away from the inlet end of the screw pipe unit than the first portion.

Abstract: A screw pipe unit intended to cooperate with and at least partly enclose a screw in a plug screw feeder for cellulose chips/pulp is provided. The screw pipe unit comprises a plurality of openings for filtrate dewatered from the chips/pulp in the screw pipe when the plug screw feeder is in operation. The screw pipe is, on at least a portion of its inner surface, provided with bars inclined with respect to the longitudinal axis of the screw pipe. The angle of inclination of the bars decreases in the longitudinal direction, from a first portion of the screw pipe unit with maximum inclination to a second portion of the screw pipe unit with bars substantially parallel to the axis, the second portion being further away from the inlet end of the screw pipe unit than the first portion.

Abstract: To provide a solid-liquid separator in which a treatment object such as sludge can be transported without clogging, liquid can be efficiently separated from the treatment object, and a maintenance operation can be easily conducted. Movable plates 12 and fixed plates 13 are disposed alternately, two screws 21, 22 are disposed in recess sections 14, 15 formed in the movable plates 12 and fixed plates 13, parts of blade sections 25, 26 of the two screws 21, 22 overlap each other, the two screws 21, 22 are rotary driven, and the liquid is discharged from the gap between the movable plates 12 and fixed plates 13, while the treatment object is being transported. When the movable plates 12 are replaced, the two screws 21, 22 are lifted up and then the movable plates 12 are pulled up and replaced.

Abstract: An apparatus for treating material, such as lignocellulose material, fibrous material, particulate material, cellulosic material, and the like. The apparatus includes a feed system, a reactor, a conveyor, and a discharge system. The feed system has an inlet for receiving the material from a supply source at ambient pressure conditions and an outlet for releasing the material. The reactor is used for treating the material and has an inlet connected to the outlet of the feed system for receiving the material released from the feed system, and an outlet for releasing the material treated by the reactor. The conveyor is located inside the reactor for conveying the material from the inlet of the reactor to the outlet thereof. The discharge system is used for discharging the material and has a chamber and a pump. The chamber has an inlet connected to the outlet of the reactor for receiving the material treated by the reactor, and an outlet.

Abstract: An apparatus and method for treating oil-bearing material which includes an extruder having an elongated enclosure with an inlet end. The extruder also includes a worm assembly for working and advancing the material through the enclosure from the inlet end to the discharge end. A high pressure region is located adjacent the extruder inlet end. A force feeder provides material to the high pressure region at a specified supply rate. Oil in the material is liberated and drained in the high pressure region to a specified level prior to entry of the material into the extruder inlet end. The apparatus also includes an outlet in the high pressure region for drainage of the released oil, as well as a screen over the outlet to prevent material greater than a specified size from exiting the high pressure region through the outlet. The seed material is mechanically worked via the action of a rotating screw in the extruder. At the same time, steam is injected into the extruder to condition the worked seed material.

Abstract: An apparatus and method for treating oil-bearing material which includes an extruder having an elongated enclosure with an inlet end. The extruder also includes a worm assembly for working and advancing the material through the enclosure from the inlet end to the discharge end. A high pressure region is located adjacent the extruder inlet end. A force feeder provides material to the high pressure region at a specified supply rate. Oil in the material is liberated and drained in the high pressure region to a specified level prior to entry of the material into the extruder inlet end. The apparatus also includes an outlet in the high pressure region for drainage of the released oil, as well as a screen over the outlet to prevent material greater than a specified size from exiting the high pressure region through the outlet. The seed material is mechanically worked via the action of a rotating screw in the extruder. At the same time, steam is injected into the extruder to condition the worked seed material.

Abstract: A below ground mining vehicle, and a method for converting an above ground vehicles into the same, which is particularly adapted for transporting workers and/or light equipment. An above ground vehicle, such as a sport utility vehicle, is modified and components are added thereto in accordance with the present invention, to arrive at the below ground mining vehicle. The vehicle includes: a speed limited engine; a transmission having its upper forward speeds disabled; fire suppression means in the vicinity of the engine; a manual fuel shut off valve in the fuel line; an engine intake air shut off valve which closes in response to a temperature sensor detecting an abnormal engine temperature; a battery box enclosing a battery; a circuit breaker serially connected with the battery; fire suppression means in the vicinity of the fuel tank; a fire suppression means in the vicinity of the exhaust muffler; and a back up alarm.