发明公开
EP1958697A1 APPARATUS FOR REMOVING OF UNBURNED CARBON FROM FLY ASH AND RELEVANT REMOVING METHOD
审中-公开
装置脱除未燃碳粉煤灰和适当的处置作业
- 专利标题： APPARATUS FOR REMOVING OF UNBURNED CARBON FROM FLY ASH AND RELEVANT REMOVING METHOD
- 专利标题（中）： 装置脱除未燃碳粉煤灰和适当的处置作业
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申请号： EP06833460.6申请日： 2006-11-28
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公开(公告)号： EP1958697A1公开(公告)日： 2008-08-20
- 发明人: SAITO, Shinichiro , ABE, Kazuo , MATSUO, Kazuyoshi
- 申请人： TAIHEIYO CEMENT CORPORATION , Mitsui Engineering and Shipbuilding Co, Ltd.
- 申请人地址： Seiroka Tower, 8-1, Akashi-cho, Chuo-ku Tokyo 104-8518 JP
- 专利权人： TAIHEIYO CEMENT CORPORATION,Mitsui Engineering and Shipbuilding Co, Ltd.
- 当前专利权人： TAIHEIYO CEMENT CORPORATION,Mitsui Engineering and Shipbuilding Co, Ltd.
- 当前专利权人地址： Seiroka Tower, 8-1, Akashi-cho, Chuo-ku Tokyo 104-8518 JP
- 代理机构： Peckmann, Ralf
- 优先权： JP2005353097 20051207
- 国际公布： WO2007066534 20070614
- 主分类号： B03D1/02
- IPC分类号： B03D1/02 ; B09B5/00 ; C02F11/00 ; C04B18/08
摘要：
PROBLEM(S)
To provide an apparatus and a method for removing unburned carbon from fly ash capable of suppressing facility cost and stably conducting performance adjustment depending on property of the fly ash.
MEANS FOR SLOVING THE PLOBLEM(S)
The method comprises the steps of: adding water to fly ash to produce slurry; adding collector to the slurry, feeding the slurry and the collector to a static-type mixer 4, a venturi pipe 24 or the like to add shearing force to them; adding frother to them to generate air bubbles; and adhering unburned carbon of the fly ash to the air bubbles to raise the unburned carbon. The frother and air can be fed to the static-type mixer or the like together with the slurry and the collector. Depending on the change in property of the fly ash, the number of the static-type mixers or the like used in series can be increased or decreased, and depending on required capacity, the number of the static-type mixers or the like used in parallel may be increased or decreased. The static-type mixer may comprise a guide vane chamber 4b with plurality of guide vanes 4d for converting the slurry and the like, which are fed to the chamber, to spiral flow, and a current cutter chamber 4c with plurality of mushroom-shaped projections 4e for adding shearing force to the slurry and the like.
To provide an apparatus and a method for removing unburned carbon from fly ash capable of suppressing facility cost and stably conducting performance adjustment depending on property of the fly ash.
MEANS FOR SLOVING THE PLOBLEM(S)
The method comprises the steps of: adding water to fly ash to produce slurry; adding collector to the slurry, feeding the slurry and the collector to a static-type mixer 4, a venturi pipe 24 or the like to add shearing force to them; adding frother to them to generate air bubbles; and adhering unburned carbon of the fly ash to the air bubbles to raise the unburned carbon. The frother and air can be fed to the static-type mixer or the like together with the slurry and the collector. Depending on the change in property of the fly ash, the number of the static-type mixers or the like used in series can be increased or decreased, and depending on required capacity, the number of the static-type mixers or the like used in parallel may be increased or decreased. The static-type mixer may comprise a guide vane chamber 4b with plurality of guide vanes 4d for converting the slurry and the like, which are fed to the chamber, to spiral flow, and a current cutter chamber 4c with plurality of mushroom-shaped projections 4e for adding shearing force to the slurry and the like.
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