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Title:
SOOT AND DUST REMOVAL APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/040109
Kind Code:
A1
Abstract:
Disclosed is a soot and dust removal apparatus comprising a porous filter (10A) with which soot and dust in gas which has passed through a filter group disposed inside a container body (12) and which has been trapped on the filter surface is removed from the filter surface by backwashing in high-pressure gas which is jetted towards porous filter elements (14) is repeatedly made to flow and then stopped by the operation of valves. A backwashing tank (42) provided with an upstream-side backwashing valve (38) and a downstream-side backwashing valve (40) is disposed in a backwashing pipe (32) for conducting the high-pressure gas from high-pressure gas supply equipment (30) to backwashing nozzles (34) for jetting the high-pressure gas for backwashing to the filter group, and a system for supplying a backwashing high-pressure medium is formed. The outlet pressure of the high-pressure gas supply equipment (30) is set to at least "1/critical pressure ratio" of the gas pressure at the filter inlet so that the flow velocity of the high-pressure gas jetted from the backwashing nozzles (34) reaches the speed of sound.

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Inventors:
KOYAMA YOSHINORI (JP)
SHINADA OSAMU (JP)
KITAGAWA YUICHIRO (JP)
YAMAMOTO TAKASHI (JP)
Application Number:
PCT/JP2010/061943
Publication Date:
April 07, 2011
Filing Date:
July 15, 2010
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
KOYAMA YOSHINORI (JP)
SHINADA OSAMU (JP)
KITAGAWA YUICHIRO (JP)
YAMAMOTO TAKASHI (JP)
International Classes:
B01D46/24
Foreign References:
JP2007090222A2007-04-12
JPH08155235A1996-06-18
JPH06190229A1994-07-12
JP2004525052A2004-08-19
JP2009113014A2009-05-28
JPH0691123A1994-04-05
JP3128261B22001-01-29
JP2002241770A2002-08-28
JP3128261B22001-01-29
Other References:
See also references of EP 2484426A4
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
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