发明名称 |
TREATING METHOD FOR FILTRATE FROM ASH WASHING |
摘要 |
<p>PROBLEM TO BE SOLVED: To provide an effective treating method for a filtrate obtained by washing ash such as incinerator ash and fly ash, bypass dust recovered from a chlorine bypass system of cement kiln, dust from a melting furnace with water. SOLUTION: This method comprises 2 processes. Namely, the filtrate from ash washing is reacted with potassium sulfate to form gypsum and potassium chloride by a double decomposition reaction in the first process, and the resulting potassium chloride is reacted with sulfuric acid to form potassium sulfate and hydrochloric acid by a double decomposition reaction in the second process, where potassium sulfate is recycled between the two processes and gypsum and hydrochloric acid are recovered from the processes.</p> |
申请公布号 |
JP2003002611(A) |
申请公布日期 |
2003.01.08 |
申请号 |
JP20010182508 |
申请日期 |
2001.06.15 |
申请人 |
FUJI KIKAI KK;NAKAGAWA KENICHI;OSAKI KOZO |
发明人 |
NAKAGAWA KENICHI;OSAKI KOZO |
分类号 |
B01D53/68;B01D1/00;B01D5/00;B01D53/77;B09B3/00;C01B7/03;C01F11/46;C02F1/58;C08J11/12;(IPC1-7):C01B7/03 |
主分类号 |
B01D53/68 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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