Fluidized bed apparatus and filter washing method for fluidized bed apparatus
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United States of America Patent
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Issued Date -
Jan 10, 2008
app pub date -
Jul 6, 2007
filing date -
Jul 10, 2006
priority date (Note) -
Abandoned
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Abstract
A cartridge filter 7 is vertically movably placed in a processing vessel 1 having a cylindrical profile. An ultrasonic washer 55 is fitted to the lateral wall 3a of the spray casing of the processing vessel 1. Washing liquid 56 is injected into the processing vessel 1 and the filter 7 is moved downward and immersed in the washing liquid 56. The washer 55 is activated under this condition to wash the filter 7. Since the washer 55 is arranged near the filter 7, the ultrasonic oscillation is easily transmitted to the filter 7 to efficiently remove the foreign objects adhering to the filter 7. Thus, with this arrangement, it is possible to wash the filter 7 in the processing vessel 1 without removing the filter 7 from a fluidized bed apparatus. In a filter washing apparatus 101, a cartridge filter 103 is contained in a processing vessel 102 and immersed in washing liquid 110. The filter 103 is rotatably suspended below an upper lid 104 by means of a retainer 107a, 107b, a rotary joint 108 and a filter anchoring knob 111. Then, it is washed in the washing liquid 110 as it is driven to rotate by a jet flow 144.
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