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A platform for research: civil engineering, architecture and urbanism
ALKALI METAL REMOVAL METHOD AND ALKALI METAL REMOVAL APPARATUS
To provide an alkali metal removal method and an alkali metal removal apparatus for stably and efficiently removing an alkali metal from biomass ash and effectively utilizing it as a cement raw material and the like.SOLUTION: An alkali metal removal method includes: a preheating treatment step of preheating biomass ash; a thermal decomposition step of thermally decomposing chlorine-containing waste and obtaining a chlorine-containing gas containing a large amount of chlorine; a chlorination roasting step of heating the preheated biomass ash in the chlorine-containing gas and forming an alkali metal chloride; and a washing treatment step of dissolving the alkali metal chloride formed in the chlorination roasting step in water to remove it.SELECTED DRAWING: Figure 2
【課題】バイオマス灰からアルカリ金属を安定的且つ効率的に除去して、セメント原料等として有効利用するための、アルカリ金属除去方法及びアルカリ金属除去装置を提供する。【解決手段】アルカリ金属除去方法は、バイオマス灰を予熱する予熱処理工程と、塩素含有廃棄物を熱分解して塩素を多量に含む塩素含有ガスを得る熱分解工程と、予熱されたバイオマス灰を塩素含有ガスの中で加熱してアルカリ金属塩化物を生成させる塩化焙焼工程と、塩化焙焼工程で生成されたアルカリ金属塩化物を水に溶解させて除去する水洗処理工程とを備える。【選択図】図２
ALKALI METAL REMOVAL METHOD AND ALKALI METAL REMOVAL APPARATUS
To provide an alkali metal removal method and an alkali metal removal apparatus for stably and efficiently removing an alkali metal from biomass ash and effectively utilizing it as a cement raw material and the like.SOLUTION: An alkali metal removal method includes: a preheating treatment step of preheating biomass ash; a thermal decomposition step of thermally decomposing chlorine-containing waste and obtaining a chlorine-containing gas containing a large amount of chlorine; a chlorination roasting step of heating the preheated biomass ash in the chlorine-containing gas and forming an alkali metal chloride; and a washing treatment step of dissolving the alkali metal chloride formed in the chlorination roasting step in water to remove it.SELECTED DRAWING: Figure 2
【課題】バイオマス灰からアルカリ金属を安定的且つ効率的に除去して、セメント原料等として有効利用するための、アルカリ金属除去方法及びアルカリ金属除去装置を提供する。【解決手段】アルカリ金属除去方法は、バイオマス灰を予熱する予熱処理工程と、塩素含有廃棄物を熱分解して塩素を多量に含む塩素含有ガスを得る熱分解工程と、予熱されたバイオマス灰を塩素含有ガスの中で加熱してアルカリ金属塩化物を生成させる塩化焙焼工程と、塩化焙焼工程で生成されたアルカリ金属塩化物を水に溶解させて除去する水洗処理工程とを備える。【選択図】図２
ALKALI METAL REMOVAL METHOD AND ALKALI METAL REMOVAL APPARATUS
アルカリ金属除去方法及びアルカリ金属除去装置
TATSUMI YOSHINORI (author) / TERASAKI JUNICHI (author) / SUGAYA HIDEYUKI (author)
2021-09-27
Patent
Electronic Resource
Japanese
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