B PERFORMING OPERATIONS; TRANSPORTING
B01 PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
49/00 Regeneration or reactivation of ion-exchangers; Apparatus therefor
B01J49/80 Automatic regeneration
B01J49/85 Controlling or regulating devices therefor