초록

The present invention relates to a method for inhibiting in a non-aqueous, non-conductive liquid. The present method also relates to a corrosion inhibitor that can be employed in such a liquid. The method can include measuring or detecting the present corrosion inhibitor with a magnetic flow meter.

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1. A method of measuring the flow of polar corrosion inhibitor comprising: providing a polar corrosion inhibitor; the polar corrosion inhibitor comprising: about 4 to about 20 wt-% polar compound;about 10 to about 17 wt-% amine;about 3 to about 7 wt-% aliphatic anhydride; andabout 55 to about 85 wt-

1. A method of measuring the flow of polar corrosion inhibitor comprising: providing a polar corrosion inhibitor; the polar corrosion inhibitor comprising: about 4 to about 20 wt-% polar compound;about 10 to about 17 wt-% amine;about 3 to about 7 wt-% aliphatic anhydride; andabout 55 to about 85 wt-% aromatic solvent;measuring the corrosion inhibitor with a magnetic flow meter at or before an outlet; andadding the measured corrosion inhibitor to a non-aqueous, non-conducting liquid from the outlet. 2. The method of claim 1, comprising adding the polar corrosion inhibitor to ethanol after distillation and before storage. 3. The method of claim 1, comprising adding the polar corrosion inhibitor to non-aqueous, non-conducting liquid held in a storage tank. 4. The method of claim 1, comprising adding the polar corrosion inhibitor to an ethanol containing liquid in a distillery. 5. A method of inhibiting corrosion: providing a polar corrosion inhibitor; the polar corrosion inhibitor comprising: about 1 to about 50 wt-% polar compound;about 10 to about 17 wt-% amine;about 3 to about 7 wt-% aliphatic anhydride; andabout 25 to about 85 wt-% aromatic solvent;adding the polar corrosion inhibitor to a non-aqueous, non-conducting liquid to produce a corrosion inhibited mixture; andmeasuring the flow of the corrosion inhibited mixture with a magnetic flow meter. 6. The method of claim 5 wherein the non-aqueous, non-conducting liquid has a conductivity of less than 3 μS/cm. 7. The method of claim 5 wherein the non-aqueous, non-conducting liquid is ethanol. 8. The method of claim 5 wherein the non-aqueous, non-conducting liquid is 190 proof ethanol. 9. The method of claim 5, comprising adding the polar corrosion inhibitor to ethanol after distillation and before storage. 10. The method of claim 5, comprising adding the polar corrosion inhibitor to non-aqueous, non-conducting liquid held in a storage tank. 11. The method of claim 5, comprising adding the polar corrosion inhibitor to non-aqueous, non-conducting liquid in a transport vessel or pipe simultaneously with the non-aqueous, non-conducting liquid. 12. The method of claim 5, comprising adding the polar corrosion inhibitor to an ethanol containing liquid in a distillery. 13. The method of claim 1, wherein the polar corrosion inhibitor comprises: about 55 to about 60 wt-% aromatic solvent;about 10 to about 17 wt-% amine;about 3 to about 7 wt-% aliphatic acid anhydride;about 10 to about 15 wt-% butyl cellosolve; andabout 10 to about 15 wt-% ethylene glycol. 14. The method of claim 1, wherein the polar corrosion inhibitor comprises: about 55 to about 65 wt-% aromatic solvent;about 10 to about 15 wt-% amine;about 3 to about 7 wt-% aliphatic acid anhydride;about 10 to about 15 wt-% ethanol; andabout 10 to about 15 wt-% ethylene glycol. 15. The method of claim 1, wherein the polar corrosion inhibitor comprises: 56-58 wt-% aromatic solvent;12 wt-% amine;5 wt-% aliphatic acid anhydride; and12.5 wt-% ethylene glycol. 16. The method of claim 5, wherein the polar corrosion inhibitor comprises: about 50 to about 60 wt-% aromatic solvent;about 10 to about 20 wt-% amine;about 3 to about 7 wt-% aliphatic acid anhydride;about 10 to about 15 wt-% butyl cellosolve; andabout 10 to about 15 wt-% ethylene glycol. 17. The method of claim 5, wherein the polar corrosion inhibitor comprises: about 55 to about 65 wt-% aromatic solvent;about 10 to about 15 wt-% amine;about 3 to about 7 wt-% aliphatic acid anhydride;about 10 to about 15 wt-% ethanol; andabout 10 to about 15 wt-% ethylene glycol. 18. The method of claim 5, wherein the polar corrosion inhibitor comprises: 56-58 wt-% aromatic solvent;12 wt-% amine;5 wt-% aliphatic acid anhydride; and12.5 wt-% ethylene glycol.