An analysis method and apparatus are disclosed for analysing an absorption filtering medium that filters volatile organic substances in a process gas in a plant for dehumidifying polymer granules, with a fan that generates a flow of gas through the S filtering medium, an analyzer of the total concentration of the organic carbon, a sensor to detect the pressure downstream of the filtering medium, in which the saturation state and/or the absorbent capacity and/or the deterioration over time of the filtering medium is determined by a comparison of the measured concentrations of total organic carbon in the flow of gas upstream and downstream of the filtering medium.

A system for drying grain in a storage bin, having an air injector for injecting external air into the bin interior to displace moist warm air toward an air extractor and the air extractor for extracting moist warm air from the bin interior and directing it outside the bin.

A grain dryer has an upper plenum in communication with a pair of heating columns. Each heating column has an inner boundary and an outer boundary being formed with a plurality of angled containment baffles configured to funnel grain down the heating column while allowing heated air to be drawn from the upper plenum through the grain. At least one fan takes a suction from the ductwork to draw heated air from the upper plenum through the heating column such that grain is exposed to heated air. The orientation of the containment baffles forming the inner boundary directs the flow of the heated air in a downward direction through an inner portion of a grain column between the inner boundary and the outer boundary, and the orientation of the containment baffles forming the outer boundary directs the heated air in an upwards direction in an outer portion of the grain column.

A grain dryer has pair of heating columns in communication with an upper plenum, and a pair of cooling columns in communication with a lower plenum. A heater is located between the lower plenum and the upper plenum, wherein air is heated by the heater as air in the lower plenum is pulled through the heater and into the upper plenum. As the grain flows into the cooling column, it is exposed to cooling air being pulled through the cooling column into the lower plenum. A cooling air bypass system having a plurality of bypass tubes brings bypass air into the lower plenum from outside the grain dryer without having the bypass air come into contact with the grain being cooled in the cooling section. The cooling air bypass system includes a grill with an adjustable damper to adjust the amount of bypass air that flows into the lower plenum.

A method for drying bulk material, in particular solids, preferably for plastics-processing machines, in drying devices and containers, interconnected to form an assembly. Depending on the material used, the drying time specified, is transmitted or set by the operator or i-s-present in the controller. A consumer transmits the material consumption or the shot weight per production cycle, respectively, or the individual or cumulated shot weights for several production cycles or other values indicative of the material consumption to the drying device(s) and/or material container(s). Each material container consists, on the control side, of several loading batches, preferably with time stamps, and the drying or residence time, respectively, for the respectively lowest loading batch in the material container results from the difference between the current time of the respective material removal by the consumer and the time stamp associated with the oldest loading batch.

A method for drying polyolefin-containing particles includes a drying step of supplying polyolefin-containing particles to a drying container and drying the polyolefin-containing particles in the drying container. In the drying step, a value determined by the following formula (a) is −0.20 or more and 1.05 or less.

0.00304×apparatus diameter [m]+0.00261×bed height [m]+0.0179×residence time [hr]+0.00213×particle temperature in drying container [K]−0.0109×inclination angle [degree]+0.0212×CXS component amount [% by mass]  Formula (a):

A grain dryer is a system and means for drying grain having a grain conveyor and pair of blower motors. A first blower motor has a heat exchange while a second blower motor has a cool air exchange. A screen covers the conveyor to ensure the grains stay in position. Grain is moved along the system by means of an auger.

Grain flow paths have an upper portion which is a mixed flow portion and which includes a preheat zone and a lower portion which is an undulating moisture equalizer portion and which includes a heat zone. Mixed flow grain diverters extend across the grain flow path substantially perpendicular to longitudinal side walls, and substantially parallel to transverse end walls of the grain flow path. Upper airflow openings are associated with each of the upper diverters. Moisture equalizer lower grain diverters extend along the longitudinal sides grain flow path substantially parallel to the longitudinal side walls, and substantially perpendicular to the transverse end walls of the grain flow path. The burner is positioned outside the airflow path to feed ambient air into the recirculating airflow path, without recirculating airflow passing through the burner.

Grain flow paths have an upper portion which is a mixed flow portion and which includes a preheat zone and a lower portion which is an undulating moisture equalizer portion and which includes a heat zone. Mixed flow grain diverters extend across the grain flow path substantially perpendicular to longitudinal side walls, and substantially parallel to transverse end walls of the grain flow path. Upper airflow openings are associated with each of the upper diverters. Moisture equalizer lower grain diverters extend along the longitudinal sides grain flow path substantially parallel to the longitudinal side walls, and substantially perpendicular to the transverse end walls of the grain flow path. The burner is positioned outside the airflow path to feed ambient air into the recirculating airflow path, without recirculating airflow passing through the burner.

Methods and apparatus for processing phyllosilicate minerals are provided. In some embodiments, the phyllosilicate mineral is clay. In some embodiments, the phyllosilicate mineral is bentonite clay.