Gas mixer and distributor for reactor

A gas mixer and distributor for feeding a gaseous reaction mixture to a reactor, the gas mixer and distributor comprising:

• means forming a first chamber with a first inlet for receiving a first gaseous reactant;
• means forming a second chamber with a second inlet for receiving a second gaseous reactant;
• said second chamber being interposed between the first chamber and an entrance of a reaction chamber;
• said second chamber including horizontal distributor tubes which have vertically elongated cross-sections for forming a plurality of vertically elongated slit-like passageways extending from the first chamber to the reactor between the horizontal distributor tubes,
• each of said plurality of vertically elongated passageways including a first vertically elongated section of uniform cross-section communicating at a first end with the first chamber, and a second vertically elongated section of gradually increasing cross-section communicating between the second end of the first section and the reactor entrance;
• said cross-sections of first passageway sections being designed to provide turbulent gas flows therethrough at a velocity exceeding a flashback velocity of a mixture of the first and second gaseous reactants;
• a plurality of orifices in the distributor tubes and communicating between the second chamber and the respective plurality of first passageway sections for passing streams of the second gaseous reactant into the first passageway sections;
• said orifices having sizes designed to provide uniform velocity of the second gaseous reactant into the first passageway sections;
• said orifices further being spaced from the second ends of the first passageway sections to insure substantially complete mixing of the first and second gaseous reactants within the first passageway sections prior to entering the second passageway sections;
• and
• said gradually increasing cross-section of the second passageway sections designed to decrease the flow velocity of the mixture of gaseous reactants and to distribute the flow of the mixture uniformly across the reaction chamber.

A gas mixer and distributor for feeding a gaseous reaction mixture to a reactor, the gas mixer and distributor comprising:

• means forming a first chamber with a first inlet for receiving a first gaseous reactant;
• means forming a second chamber with a second inlet for receiving a second gaseous reactant;
• said second chamber being interposed between the first chamber and an entrance of a reaction chamber;
• means including enclosed walls forming a plurality of elongated passageways extending from the first chamber through the second chamber to the reactor;
• each of said plurality of elongated passageways including a first elongated section of uniform cross-section communicating at a first end with the first chamber, and a second section of gradually increasing cross-section communicating between the second end of the first section and the reactor entrance;
• said cross-sections of first passageway sections being designed to provide turbulent gas flows therethrough at a velocity exceeding a flashback velocity of a mixture of the first and second gaseous reactants;
• a plurality of orifices in the enclosed walls and communicating between the second chamber and the respective plurality of first passageway sections for passing streams of the second gaseous reactant into the first passageway sections;
• said orifices having sizes designed to provide uniform velocity of the second gaseous reactant into the first passageway sections;
• said orifices further being spaced from the second ends of the first passageway sections to insure substantially complete mixing of the first and second gaseous reactants prior to entering the reaction chamber;
• said gradually increasing cross-section of the second passageway sections designed to decrease the flow velocity of the mixture of gaseous reactants and to distribute the flow of the mixture uniformly across the reaction chamber;
• and
• means for directing a cooling liquid flow in the mixer and distributor for cooling the mixer and distributor.