AFlow reactor feeders, dischargers, and fluidizators
When MC pulp is pumped, a plug flow of pulp is generated in the pipeline. To maintain flow while avoiding “channeling” as the pulp is pumped into large reactors for bleaching, the pulp feed must be uniformly divided across the entire diameter of the reactor. This is best accomplished with an ANDRITZ AFlow ARF reactor feeder. The AFlow ARF fluidizes the pulp to create flow characteristics similar to water, ensuring smooth feeding that is clog-free.
When MC pulp is discharged from a pressurized reactor typically found in oxygen delignification and some bleaching processes, there is again the potential for plugging and channeling. That is why ANDRITZ designed the AFlow ARD reactor discharger. The AFlow ARD is equipped with gas removal capability, which has proven to be beneficial in oxygen-based bleaching processes.
The AFlow ATF tube fluidizator was developed especially for the dilution of pulp from MC to lower consistencies required in the screen room (2.5 – 5%). The arrangement of the AFlow ATF in the screen room feed tank is compact and provides an accurate, uniform feed consistency to the screens. It is also very energy efficient.