Patent ID: 6468352
Filing Date: 2002-10-22
Classification: B01J

Abstract:
A particle modifying apparatus comprising:a mixing section for mixing cooled particles with a saturated vapor of a modifying agent for modifying the particles to let the modifying agent condense on a surface of the particles; a particle introducing section for introducing the particles into said mixing section; particle cooling means for cooling the particles in said particle introducing section so as to be capable of producing a supersaturated atmosphere of the modifying agent surrounding the particles when the particles are mixed with the saturated vapor of the modifying agent; and a modifying agent vapor supplying section for turning the modifying agent into the saturated vapor prior to supplying the saturated vapor of the modifying agent to said mixing section, whereby the particle introducing section and the modifying agent vapor supplying section introduce the cooled particles and the saturated vapor of the modifying agent separately into the mixing section.