发明名称 |
MANUFACTURE OF HIGH-STRENGTH, LOW-SALT SODIUM HYPOCHLORITE BLEACH |
摘要 |
A method for continuous manufacture of higher-strength, lower-salt, aqueous sodium hypochlorite bleach from lower-strength aqueous sodium hypochlorite bleach that has some sodium hydroxide and that is essentially free of sodium chloride (salt) crystals, aqueous sodium hydroxide solution having a concentration by weight within a range from about 45% to about 51%, chlorine in gas and/or liquid phase that may or may not include inerts, and a recycle solution. Slurry is withdrawn from the tank at a level below where the lower-strength bleach, the sodium hydroxide solution, the chlorine, and the recycle solution begin to mix with slurry already in the tank. A first portion of the slurry is withdrawn and used as the recycle solution. A second portion of the slurry is withdrawn and processed to separate substantially all salt crystals from residual liquid that is recovered as the higher-strength lower-salt, aqueous sodium hypochlorite bleach. |
申请公布号 |
WO2008082626(A1) |
申请公布日期 |
2008.07.10 |
申请号 |
WO2007US26444 |
申请日期 |
2007.12.28 |
申请人 |
POWELL TECHNOLOGIES LLC ( A MICHIGAN LIMITED LIABILITY COMPANY) |
发明人 |
POWELL, DUANE, J.;BEBOW, ROBERT, B.;HARDMAN, BRENT, J. |
分类号 |
C01B11/04 |
主分类号 |
C01B11/04 |
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