Honeywell International Inc.

Advansix Resins & Chemicals LLC.

David Wayne Donnick

James A Kweeder

Andrew J Howes

Stephanie C Barthe

Raymond G Wissinger

Gregory A Cleotelis

Methods and apparatus for prilling are provided which include dynamically controlling the pressure at the prill head for increased control over prill quality and size distribution. In one embodiment, the pressure of a headspace above a volume of liquid or slurry is regulated to maintain a more precise control of the pressure of the liquid or slurry at the prill head. In another embodiment, an axial upflow device is used to maintain a more precise control of the pressure of the liquid or slurry at the prill head.

Method and apparatus for prilling with pressure control

Prill heads having prilling assemblies that include adjustable openings. Prilling methods using the prilling assemblies can allow for the size of the openings to be varied during processing to alter the size of the prills as desired, or for clogged openings to be cleared, while maintaining operation of the prilling process. The prilling assemblies and prilling methods can be used to produce fertilizer products, including fertilizers comprising ammonium sulfate nitrate.

Variable-orifice prill plate

Growing community of inventors

Midlothian, VA, United States of America

David Wayne Donnick