Fluidized bed and method for preparing catalyst by using fluidized bed

• Main Authors: LI SHAOYU, SHI XUEJUN, YU HAIPENG, WU LIYANG, WU DAOHONG, HUANG WEI, SU ERQIANG, ZHENG QINGQING
• Format: Patent
• Language: Chinese; English
• Published: 14.11.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a fluidized bed and a method for preparing a catalyst by using the fluidized bed. The fluidized bed comprises a fluidized bed body, a feeding device, a spraying device, an air inlet device and a discharging device, wherein the fluidized bed body comprises a fluidized section and an enlarged section; the enlarged section is positioned above the fluidized section, the cross sectional area of the enlarged section is larger than the cross sectional area of the fluidized section, and a filter is mounted on the top of the enlarged section; the feeding device comprises a feed screw and a carrier storage tank; the feed screw is respectively connected with the fluidized section and the carrier storage tank; the spraying device is positioned below the feeding device and comprises an impregnation liquid storage tank, a metering pump, a one-way valve and a sprayer which are connected in sequence; the sprayer is arranged on the inner wall of the fluidized section; a gas bypass is arranged on a conne