METHOD FOR PRODUCING SOIL, SOIL-TREATING UNIT, METHOD FOR TREATING AND UNIT FOR TREATING

Title:

METHOD FOR PRODUCING SOIL, SOIL-TREATING UNIT, METHOD FOR TREATING AND UNIT FOR TREATING

Document Type and Number:

WIPO Patent Application WO/1999/051366

Kind Code:

A1

Abstract:

A body to be treated such as a soil or a flying burned ash is introduced into a sealable thermal decomposition furnace (310) and is heated under reduced pressure. A gaseous effluent derived from the body to be treated is treated in a manner wherein formation or resynthesis of dioxin is inhibited. A heating residue of the body to be treated is cooled after it is purged with a gas for displacement which is free of a halogen and has no ability to form an organic halide. By such a treatment, a content of an organic halide remaining in the heating residue of the body to be treated can be reduced to a very low level.

Inventors:

YOKOYAMA YOSHIAKI (JP)
KODAMA TOORU (JP)
MISHIMA YASUO (JP)
TAKAMIYA KATUO (JP)

Application Number:

PCT/JP1999/001660

Publication Date:

October 14, 1999

Filing Date:

March 31, 1999

Export Citation:

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Assignee:

HOUEI SYOUKAI CO LTD (JP)
YOKOYAMA YOSHIAKI (JP)
KODAMA TOORU (JP)
MISHIMA YASUO (JP)
TAKAMIYA KATUO (JP)

International Classes:

A62D3/38; A62D3/40; B01D53/00; B01D53/02; B01D53/70; B09B3/00; B09C1/06; F23G5/027; F23G7/14; G01N33/24; (IPC1-7): B09B3/00; B09C1/06; B01D53/34; F23G7/14

Domestic Patent References:

WO1997033703A1

1997-09-18

Foreign References:

JPH1047629A	1998-02-20
JPH07313951A	1995-12-05
JPH05305275A	1993-11-19
JPH08187483A	1996-07-23
JPH08108164A	1996-04-30
JPH08290147A	1996-11-05
JPH08168752A	1996-07-02
JPH09192641A	1997-07-29
JPH05346219A	1993-12-27
JPH07265833A	1995-10-17
JPH07116451A	1995-05-09
JPH0868528A	1996-03-12

Other References: