VALUABLE SUBSTANCE RECOVERY DEVICE AND RECOVERY METHOD

Title:

VALUABLE SUBSTANCE RECOVERY DEVICE AND RECOVERY METHOD

Document Type and Number:

WIPO Patent Application WO/2013/005734

Kind Code:

A1

Abstract:

[Problem] To provide a valuable substance recovery device, etc. that can keep equipment costs and operating costs low and can reduce the burden of gas processing after secondary combustion. [Solution] A valuable substance recovery device (1) provided with a calcining furnace (11) that is attached to a cement-baking device (2), and a return path (12) that returns exhaust gas from the calcining furnace to the cement-baking device. By effectively utilizing the heat generated by the cement-baking device in the calcining furnace that recovers valuable substances, equipment for supplying fuel for the calcining furnace becomes unnecessary and operating costs can be kept low. Acidic gases can be processed using the large amounts of CaO present inside the cement-baking device, making special processing devices for processing the acidic gases unnecessary and making it possible to reduce equipment costs and operating costs significantly compared to the past. The calcining furnace is able to take in heat from the lower part thereof and discharge same from the return path, and can return the calcining furnace exhaust gas to the 800°C or higher temperature region of the cement-baking device via the return path.

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Inventors:

OKAMURA SOUICHIROU (JP)
HANADA TAKASHI (JP)
SAKAMOTO YOSHIAKI (JP)

Application Number:

PCT/JP2012/066950

Publication Date:

January 10, 2013

Filing Date:

July 03, 2012

Export Citation:

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Assignee:

TAIHEIYO CEMENT CORP (JP)
OKAMURA SOUICHIROU (JP)
HANADA TAKASHI (JP)
SAKAMOTO YOSHIAKI (JP)

International Classes:

B01D53/72; B01D53/62; B09B3/00; C04B7/60; C22B7/02; F23G5/00

Foreign References:

JP2003103243A	2003-04-08
JP2006342046A	2006-12-21
JP2003506299A	2003-02-18
JP2002128548A	2002-05-09

Other References:

See also references of EP 2730329A4
None

Attorney, Agent or Firm:

NAKAI JUN (JP)
Nakai 潤 (JP)

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Claims:

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