A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
MERCURY RECOVERY SYSTEM AND MERCURY RECOVERY METHOD
PROBLEM TO BE SOLVED: To provide a mercury recovery system and a mercury recovery method where mercury is efficiently recovered from a material containing mercury at a low cost and a mercury-removed material is utilized as a cement raw material.SOLUTION: A mercury recovery system 1 comprises: an indirect heating device 4 indirectly heating a mercury-containing material (mercury-containing dust D3) and volatilizing mercury contained in the material; a high oxygen concentration gas feeding device (gas introduction part 4d) feeding a high oxygen concentration gas A1 into the indirect heating device; a dust collector 5 collecting dust from the exhaust gas (transportation gas G1) of the indirect heating device; and a mercury recovery device 7 recovering mercury contained in the exhaust gas of the dust collector. The combustion of unburned carbon contained in the mercury-containing material is accelerated by the high oxygen concentration gas, the unburned carbon disappears and a mercury-removed material is utilized as a cement raw material. A high oxygen atmosphere can be formed in the indirect heating device using the high oxygen concentration gas having an oxygen concentration of 30 vol.% or more and 100 vol.% or less.SELECTED DRAWING: Figure 1
【課題】低コストで水銀を含む物質から効率よく水銀を回収すると共に、水銀除去物質をセメント原料として利用する。【解決手段】水銀を含む物質（水銀含有ダストＤ３）を間接加熱して該物質に含まれる水銀を揮発させる間接加熱装置４と、間接加熱装置に高酸素濃度ガスＡ１を供給する高酸素濃度ガス供給装置（ガス導入部４ｄ）と、間接加熱装置の排ガス（搬送用ガスＧ１）から集塵する集塵装置５と、集塵装置の排ガスに含まれる水銀を回収する水銀回収装置７とを備える水銀回収システム１。高酸素濃度ガスによって水銀を含む物質に含まれる未燃カーボンの燃焼を促進して未燃カーボンを消失させ、水銀除去物質をセメント原料として利用する。酸素濃度が３０容量％以上１００容量％以下の高酸素濃度ガスを用いて間接加熱装置に高酸素雰囲気を形成することができる。【選択図】図１
MERCURY RECOVERY SYSTEM AND MERCURY RECOVERY METHOD
PROBLEM TO BE SOLVED: To provide a mercury recovery system and a mercury recovery method where mercury is efficiently recovered from a material containing mercury at a low cost and a mercury-removed material is utilized as a cement raw material.SOLUTION: A mercury recovery system 1 comprises: an indirect heating device 4 indirectly heating a mercury-containing material (mercury-containing dust D3) and volatilizing mercury contained in the material; a high oxygen concentration gas feeding device (gas introduction part 4d) feeding a high oxygen concentration gas A1 into the indirect heating device; a dust collector 5 collecting dust from the exhaust gas (transportation gas G1) of the indirect heating device; and a mercury recovery device 7 recovering mercury contained in the exhaust gas of the dust collector. The combustion of unburned carbon contained in the mercury-containing material is accelerated by the high oxygen concentration gas, the unburned carbon disappears and a mercury-removed material is utilized as a cement raw material. A high oxygen atmosphere can be formed in the indirect heating device using the high oxygen concentration gas having an oxygen concentration of 30 vol.% or more and 100 vol.% or less.SELECTED DRAWING: Figure 1
【課題】低コストで水銀を含む物質から効率よく水銀を回収すると共に、水銀除去物質をセメント原料として利用する。【解決手段】水銀を含む物質（水銀含有ダストＤ３）を間接加熱して該物質に含まれる水銀を揮発させる間接加熱装置４と、間接加熱装置に高酸素濃度ガスＡ１を供給する高酸素濃度ガス供給装置（ガス導入部４ｄ）と、間接加熱装置の排ガス（搬送用ガスＧ１）から集塵する集塵装置５と、集塵装置の排ガスに含まれる水銀を回収する水銀回収装置７とを備える水銀回収システム１。高酸素濃度ガスによって水銀を含む物質に含まれる未燃カーボンの燃焼を促進して未燃カーボンを消失させ、水銀除去物質をセメント原料として利用する。酸素濃度が３０容量％以上１００容量％以下の高酸素濃度ガスを用いて間接加熱装置に高酸素雰囲気を形成することができる。【選択図】図１
MERCURY RECOVERY SYSTEM AND MERCURY RECOVERY METHOD
水銀回収システム及び水銀回収方法
WADACHI HITOSHI (author)
2016-08-22
Patent
Electronic Resource
Japanese
IPC:
B01D
SEPARATION
,
Trennen
/
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
C04B
Kalk
,
LIME
/
C22B
PRODUCTION OR REFINING OF METALS
,
Gewinnen oder Feinen von Metallen
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE