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US 2016/0237031 A1Published application
Method for making a peroxycarboxylic acid
AssigneeEcolab USA Inc.
InventorsDavid D. McSherry, Richard Staub, Dan N. Tallman, Junzhong Li, Keith D. Lokkesmoe
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Abstract
The present invention relates to apparatus and methods for making a peroxycarboxylic acid. The apparatus includes a reaction catalyst and a guard column for pretreating one or more reagents, which can increase the life, activity, and/or safety of the reaction catalyst. The peroxycarboxylic acid compositions made by the method and apparatus can include one or more peroxycarboxylic acids.
Claims20
A method for making a peroxycarboxylic acid, comprising:
- providing a liquid composition of a carboxylic acid and an oxidizing agent;
- pretreating the liquid composition with a pretreatment column to remove metal ion from the mixed composition;
- measuring a condition of the liquid composition i) before pretreating and ii) at site of pretreating during pretreating;
- determining a difference between i) and ii);
- providing a detectable signal if the difference meets or exceeds a predetermined value;
- reacting the pretreated composition in the presence of a reaction catalyst that can be physically removed from reaction mixture to produce a peroxycarboxylic acid composition;
- and recovering the peroxycarboxylic acid composition.
4 more elements
Dependencies are inferred from the claim text.