Method for producing hydrogen peroxide from hydrogen and oxygen

A process for preparing hydrogen peroxide by reaction of hydrogen and oxygen in the presence of a catalyst, comprising the steps of:

• (a) establishing a continuous flow of aqueous reaction medium containing finely divided catalyst for the said reaction in an elongated reaction zone at temperature and pressure conditions favorable to said reaction;
• (b) sparging from one to fifty volumes of oxygen and one volume of hydrogen into said continuously flowing aqueous medium, said hydrogen and oxygen being sparged at points distanced from one another along the path of said continuous flow and thereby forming dispersed tiny bubbles of hydrogen and oxygen, respectively, in said aqueous medium;
• (c) maintaining the ratio of the volumetric flow of said aqueous medium to the aggregate of the volumetric flows of said gaseous hydrogen and oxygen at from 300 to 30 and maintaining the linear flow of aqueous medium at at least 10 feet per second to ensure that the bubbles of hydrogen and oxygen are in a continuous, aqueous phase and;
• (d) introducing the said reaction medium into a gas-liquid separator and therein separating unreacted gases from the aqueous reaction medium containing hydrogen peroxide;
• and
• (e) recovering hydrogen peroxide from said aqueous medium.

A process for preparing hydrogen peroxide by reaction of hydrogen and oxygen in the presence of a catalyst, comprising the steps of:

• (a) establishing a continuous flow of aqueous reaction medium containing finely divided catalyst for the said reaction in an elongated reaction zone;
• (b) sparging from one to twenty moles of oxygen and one mole of hydrogen into said continuously flowing aqueous medium, said hydrogen and oxygen being sparged at points distanced from one another along the path of said continuous flow and thereby forming dispersed tiny bubbles of hydrogen and oxygen, respectively, in said aqueous medium;
• (c) maintaining
• (i) the ratio of the flow of said aqueous medium to the aggregate flow of said gaseous hydrogen and oxygen, at from 300 to 30;
• (ii) the linear flow rate of aqueous medium at at least 10 feet per second;
• and
• (iii) the temperature and pressure conditions of the flow medium so as to cause the bubbles of hydrogen and oxygen to react catalytically to form hydrogen peroxide;
• (d) introducing the said reaction medium into a gas-liquid separator and therein separating unreacted gases from the aqueous reaction medium containing hydrogen peroxide;
• and
• (e) recovering hydrogen peroxide from said aqueous medium.