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    • 4. 发明专利
    • APPARATUS FOR COLLECTING SOLID PARTICLES OF FLUIDIZED BED IN CASING
    • JPH01148337A
    • 1989-06-09
    • JP26594888
    • 1988-10-21
    • TOTAL FRANCE
    • JIYANNRUI MOOREONFURANSOWA BIRUSHIYARURU MANGIYU
    • B01J8/24B01J8/00
    • PURPOSE: To exactly control the quantity of sample particles to be sampled by providing a sampling riser pipe which is communicated with the lower side of an enclosure and is arranged on the outside thereof with a restriction and disposing a means for injecting a compressed gas to the riser pipe between the enclosure and the restriction. CONSTITUTION: The compressed gas is injected by a diffuser 2 from the bottom end of the casing 1 to form a boiling type fluidized bed L. The sampling riser pipe 4 is communicated with the lower side of the level Z of the fluidized bed L and the particles in the fluidized bed L are pressed into the riser pipe 4 by pressure and are entrained by the gaseous stream emitted from the fluidized bed L. The riser pipe 4 is provided with the restriction 5 and the diameter thereof is set at a prescribed diameter and the sampling flow rate is controlled to the prescribed max. value or below. The particles entrained in the gaseous stream enter a storage section 6 and are stored in a prepressurized vessel 8. The compressed gas is fed from a line 14 into the riser pipe 4 and the flow rate thereof is adjusted by a valve 15, there by, the sampling quantity of the samples is exactly controlled to a prescribed max. value or below.