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Title:
METHOD OF TREATING MATERIAL COMPRISING HEAVY METALS BY INCINERATION, AND INCINERATOR FOR INCINERATING MATERIAL COMPRISING HEAVY METALS
Document Type and Number:
Japanese Patent JP2009172495
Kind Code:
A
Abstract:

To provide a method of treating ash and an incinerator each capable of volatilizing and separating heavy metals without melting ash.

The incinerator equipped with an incineration furnace 2 that is kept in a reducing atmosphere and heats a material to be treated comprising heavy metals in the presence of a chlorine-containing substance at a temperature lower than the melting point of the heavy metals to volatilize and separate them is characterized by comprising a feeder for feeding an alkalinity controlling agent to the material to be treated in the preceding step of the incinerator 2 or in the upstream of the incinerator 2, with the feeder allowed to feed the alkalinity controlling agent to the material to be treated in such an amount that its alkalinity after the addition of the alkalinity controlling agent thereinto becomes not higher than 0.4 or not lower than 1.1.


Inventors:
ONODERA NORIMASA
SENBA NORIAKI
ODAKA SHIGETAKA
NAKAGAWA MAKIKO
YAMAMOTO HIROTAMI
Application Number:
JP2008012274A
Publication Date:
August 06, 2009
Filing Date:
January 23, 2008
Export Citation:
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Assignee:
MHI ENVIRONMENT ENG CO LTD
International Classes:
B09B3/00; B09C1/02; B09C1/06; B09C1/08; F23J1/00
Domestic Patent References:
JP2004162141A2004-06-10
JP2007275724A2007-10-25
JP2001321743A2001-11-20
JP2005320218A2005-11-17
JP2004306012A2004-11-04
JP2006314987A2006-11-24
Attorney, Agent or Firm:
Masahisa Takahashi



 
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