发明名称 |
METHOD FOR DETERMINING WHETHER ACIDIC AQUEOUS SOLUTION IS USABLE |
摘要 |
This method for determining whether an acidic aqueous solution is usable or not comprises: a first detection step (S21) in which the solution concentration of an acidic aqueous solution resulting from pickling is determined; a second detection step (S23a, S23b) in which the concentration of a specific metal in the acidic aqueous solution resulting from pickling is determined, the metal having been contained in the coating layer; a concentrated-solution addition step (S25b) in which in cases when the solution concentration is equal to or less than a predetermined first threshold, a concentrated acidic aqueous solution is newly added; and a determination step (S24a, S24b) in which in cases when the concentration of the specific metal is equal to or higher than a predetermined second threshold, it is determined that the acidic aqueous solution is unusable. |
申请公布号 |
WO2014129324(A1) |
申请公布日期 |
2014.08.28 |
申请号 |
WO2014JP52930 |
申请日期 |
2014.02.07 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
KAWAKAMI TETSUJI;MITSUI HIROYUKI;INOUE YOSHIYUKI |
分类号 |
F02C7/00;B08B3/08;C23G1/04;F01D25/00 |
主分类号 |
F02C7/00 |
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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