Abstract: A system for heating, coating, cooling and screening a granular substrate is provided. The system, such as an apparatus for continuous coating granular particles, includes a preheater apparatus for heating granular particles, a rotary drum having an inlet horizontally coupled to the preheater for receiving heated granular particles directly from the fluidized bed preheater, a coating apparatus positioned within the drum for applying a coating to the heated granular particles, and a cooling apparatus positioned horizontally in association with the drum for cooling the granular particles subsequent to coating.

Abstract: A system for heating, coating, cooling and screening a granular substrate is provided. The system, such as an apparatus for continuous coating granular particles, includes a preheater apparatus for heating granular particles, a rotary drum having an inlet horizontally coupled to the preheater for receiving heated granular particles directly from the fluidized bed preheater, a coating apparatus positioned within the drum for applying a coating to the heated granular particles, and a cooling apparatus positioned horizontally in association with the drum for cooling the granular particles subsequent to coating.

Abstract: A system for heating, coating, cooling and screening a granular substrate is provided. The system, such as an apparatus for continuous coating granular particles, includes a preheater apparatus for heating granular particles, a rotary drum having an inlet horizontally coupled to the preheater for receiving heated granular particles directly from the fluidized bed preheater, a coating apparatus positioned within the drum for applying a coating to the heated granular particles, and a cooling apparatus positioned horizontally in association with the drum for cooling the granular particles subsequent to coating.

Abstract: A granulation method may include feeding a graded powder into a granulator. The powder may have a particle size distribution (PSD) of at least 98% ?115 mesh and at most 50% ?200 mesh. The powder may have a PSD of at least 98% less than or equal to 4.2% of a median product particle size and at most 50% less than or equal to 2.5% of the median product particle size. The powder may have a PSD of between 40% and 80% between 3% and 6% of the median product particle size, between 5% and 30% between 2% and 4% of the median product particle size, and between 10% and 40% between 1% and 3% of the median product particle size. A liquid binder may be fed into the granulator. Wet granules may be discharged from the granulator and may have a moisture content of between 7% and 12%.

Abstract: A system for heating, coating, cooling and screening a granular substrate is provided. The system, such as an apparatus for continuous coating granular particles, includes a preheater apparatus for heating granular particles, a rotary drum having an inlet horizontally coupled to the preheater for receiving heated granular particles directly from the fluidized bed preheater, a coating apparatus positioned within the drum for applying a coating to the heated granular particles, and a cooling apparatus positioned horizontally in association with the drum for cooling the granular particles subsequent to coating.

Abstract: A granulation method may include feeding a graded powder into a granulator. The powder may have a particle size distribution (PSD) of at least 98%-115 mesh and at most 50%-200 mesh. The powder may have a PSD of at least 98% less than or equal to 4.2% of a median product particle size and at most 50% less than or equal to 2.5% of the median product particle size. The powder may have a PSD of between 40% and 80% between 3% and 6% of the median product particle size, between 5% and 30% between 2% and 4% of the median product particle size, and between 10% and 40% between 1% and 3% of the median product particle size. A liquid binder may be fed into the granulator. Wet granules may be discharged from the granulator and may have a moisture content of between 7% and 12%.

Abstract: This invention relates to an improvement in prilling whereby water is atomized into a prill tower to affect faster solidification of the prill, and in particular, the outside surface of the prill by providing an increased rate of surface cooling while reducing the required air flows in the tower. This results in a major reduction in air pollution potential in the form of both fume and particulate while at the same time allowing substantial production rate increases. Specifically, the invention relates to quick freezing the outside surface of the prill by flash evaporation of finely atomized water particles on the surface of the prill or in extremely close proximity to the prill to greatly lower the vapor pressure at the prill's surface and by continued flash evaporation to enhance cooling so as to allow upward flowing air to be reduced to a point where micro-prills which are formed in prilling can settle in the prill tower while obtaining the same or increased production rates.

Abstract: A prilling apparatus and process for producing seed material for size enlargement processes such as a granulation process for bisphenol. The apparatus includes a fluidized bed system with a spray header therein for producing spray droplets of material in a gaseous stream such as nitrogen to form prills of less than about 1 mm diameter.

Abstract: A prilling apparatus and process for producing seed material for size enlargement processes such as a granulation process for bisphenol. The apparatus includes a fluidized bed system with a spray header therein for producing spray droplets of material in a gaseous stream such as nitrogen to form prills of less than about 1 mm diameter.