Title:
CARBON DIOXIDE FIXATION APPARATUS AND CARBON DIOXIDE FIXATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/190372
Kind Code:
A1
Abstract:
Provided are a carbon dioxide fixation apparatus and a carbon dioxide fixation method, whereby it becomes possible to fix carbon dioxide at low cost and produce a powder having carbon dioxide fixed thereon at low cost and in a large quantity. A carbon dioxide fixation apparatus (1) is provided with: a water-adding means (5) for adding water to a concrete sludge (2) from which a coarse aggregate and a fine aggregate have been removed, while stirring the concrete sludge (2); a supplying means (11) for supplying a gas (G) containing carbon dioxide to a first intermediate (6) that has passed through the water-adding means (5); and a water-draining means (20) for draining a second intermediate (12) that has been passed through the supplying means (11) to produce light calcium carbonate which is a crystal of calcium carbonate, a cement-component-carbonated powder in which a calcium component in cement particles is carbonated on the surfaces of the cement particles, unreacted cement particles, and a powder.
Inventors:
HAYAKAWA YASUYUKI (JP)
YAGI TOSHIYUKI (JP)
YOSHIDA HIROYUKI (JP)
SASAKI TAKESHI (JP)
TERAMAE TSUYOSHI (JP)
YAGI TOSHIYUKI (JP)
YOSHIDA HIROYUKI (JP)
SASAKI TAKESHI (JP)
TERAMAE TSUYOSHI (JP)
Application Number:
PCT/JP2023/012265
Publication Date:
October 05, 2023
Filing Date:
March 27, 2023
Export Citation:
Assignee:
NIPPON CONCRETE IND CO LTD (JP)
IDEMITSU KOSAN CO (JP)
IDEMITSU KOSAN CO (JP)
International Classes:
B01D53/14; B01D53/62; B01D53/80; B01J20/02; C01F11/18
Foreign References:
| JP2014148432A | 2014-08-21 | |||
| JP2009136770A | 2009-06-25 | |||
| JPH0731985A | 1995-02-03 | |||
| JP2009279552A | 2009-12-03 | |||
| JP2021138574A | 2021-09-16 | |||
| JP2006069860A | 2006-03-16 | |||
| JP2007190538A | 2007-08-02 | |||
| JP2014117636A | 2014-06-30 |
Attorney, Agent or Firm:
KABASAWA Satoshi et al. (JP)
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