Method for removing oxygen from a reaction medium
View Patent ↗The invention relates to a method for removing oxygen from a water containing reaction medium. A pair of electrodes (cathode and anode), are added to the medium, with a surfactant attached to the surface of at least one of the cathode and anode. The medium is kept at an acidic pH, and an electrical current is applied. Oxygen is drawn to the electrodes, displacing surfactant, and reacts with H + ions and H 2 O molecules to form H 2 O 2 , which can then be removed.
1. A method for removing oxygen from a water and crude oil containing reaction medium comprising placing a cathode and an anode into said reaction medium together with a surfactant, wherein said surfactant is adsorbed to at least one of said cathode and said anode, and applying an electrical potential created by said cathode and anode to said reaction medium, to attract molecular oxygen in said reaction medium to said cathode and atomic oxygen in said reaction medium to said anode with displacement of molecules of said surfactant into said reaction medium, and reacting said atomic oxygen with H + ions and H 2 O to produce H 2 O 2 , at a temperature of from 200° C. to 240° C.
2. The method of claim 1 , further comprising adding an acid to said reaction medium to lower pH of said reaction medium to below 6.0.
3. The method of claim 1 , wherein said surfactant comprises a hydrophobic chain of from 8 to 20 carbon atoms.
4. The method of claim 3 , wherein said hydrophobic chain comprises from 10 to 18 carbon atoms.
5. The method of claim 4 , wherein said hydrocarbon chain comprises from 12 to 16 carbon atoms.
6. The method of claim 5 , wherein said surfactant is cetyl trimethyl ammonium bromide, or dodecyl trimethyl ammonium bromide.
7. The method of claim 2 , wherein said acid is H 2 SO 4 .
8. The method of claim 1 , further comprising reacting said atomic oxygen with H + ions and H 2 O at a pressure of from 450-600 psia.