FIELD: granulation in fluidized bed.
SUBSTANCE: granules are formed due to spraying of liquid agent on seeding particles found in fluidized bed, thus facilitating growth of granules. Sprayer has tube with at least one inlet hole at one end through which liquid agent is fed for facilitating growth of granules and outlet hole at the other end for escape of this agent from tube; sprayer is also provided with gas flow distributor which is connected with interior of tube and is located around it at definite distance from outlet hole; sprayer has emulsifying unit connected with inlet hole of tube and with distributor for forming gas flow emulsion inside tube and facilitating growth of granules. Granulator has reservoir where fluidized bed of seeding particles and granules of agent being granulated is formed, device for continuous delivery of seeding particles to fluidized bed, system for liquefaction and holding of seeding particles and granules in fluidized state and at least one distributor through which flow of liquid agent facilitating growth of granules is fed. Distributor is provided with one or several sprayers for spraying liquid agent facilitating growth of seeding particles; each sprayer is provided with tube with at least one inlet hole at one end for delivery of liquid agent and outlet hole at other end for escape of this agent from tube. Provision is also made for gas flow distributor connected with interior of tube and located around it at definite distance from outlet hole and emulsifying unit connected with inlet hole of tube and distributor for forming gas flow emulsion inside tube in liquid agent.
EFFECT: enhanced efficiency; improved quality of granulation; low cost of process due to reduced rate of delivery of agent and air.
4 cl, 2 dwg
