Venturi mixer

An apparatus for reacting a first reactant and a second reactant and mixing the product formed by said reaction and at least one of said reactants, said apparatus comprising:

• a mixing tank;
• outlet means in the bottom of the mixing tank for removing the contents of the mixing tank;
• first inlet means connected to said mixing tank for introducing said first reactant into said mixing tank;
• a venturi pump comprising:
• a venturi tube disposed within said mixing tank and having inlet and outlet ends;
• a reactor upstream of said venturi tube and having inlet and outlet ends and comprising:
• an induction chamber at the inlet end of said reactor;
• second inlet means for introducing said second reactant into said induction chamber;
• a reaction chamber at the outlet end of said reactor;
• a perforated wall separating and communicating said induction chamber and said reaction chamber whereby said second reactant can flow from said induction chamber into said reaction chamber;
• a nozzle at the outlet end of said reactor and in fluid flow communication with said reaction chamber, said nozzle projecting into the inlet end of said venturi tube;
• first pipe means connecting and communicating the outlet means of said mixing tank with said reaction chamber of said venturi pump;
• auxiliary pump means associated with said pipe means and between said outlet means and said venturi pump for circulating the contents from said mixing tank into and through tthe venturi pump;
• and
• cooling means located around said reaction chamber for cooling said reaction chamber;
• whereby energy released upon the reaction of said first and second reactants in said reaction chamber powers said venturi pump and whereby fluid leaving said nozzle will create a low pressure in said venturi tube to thereby draw the contents in the mixing tank which are adjacent to the inlet end of said venturi tube into said venturi tube to promote mixing between the contents from said mixing tank and reaction product from said reaction chamber.

A venturi pump for mixing a product of a first reactant and a second reactant with said reactants, comprising:

• a venturi tube having inlet and outlet ends;
• a reactor having inlet and outlet ends and comprising:
• an induction chamber at said inlet end of said reactor;
• first inlet means for introducing one of said reactants into said induction chamber;
• a reaction chamber having a circular cross-section wall adjacent to said induction chamber and between said induction chamber and said venturi tube, said reaction chamber terminating at its downstream end in a nozzle which projects into said inlet end of the venturi tube;
• and
• an annular perforated wall having a center opening, said perforated wall separating and communicating the induction chamber and the reaction chamber;
• second inlet means in registry with said center opening for directing flow of said product and said reactant into the reaction chamber without permitting flow into said induction chamber;
• said reaction chamber including a plurality of baffles therein which are angled toward said outlet end of said reactor and which extend into said reaction chamber a distance no greater than the distance from said reaction chamber wall to the periphery of the center opening of said annular perforated wall;
• whereby energy released upon the reaction of said first and second reactants in said reaction chamber powers said venturi pump and whereby fluid leaving said nozzle will create a low pressure in said venturi tube to thereby suck fluid adjacent to the inlet of said venturi tube into the venturi tube to promote mixing between the adjacent fluid and the fluid product leaving said nozzle, and
• wherein when the reaction between said reactants is taking place in said reaction chamber said baffles promote mixing of said reactants and said product and when no reaction is taking place in said reaction chamber said product moves freely through said reaction chamber without impedance from said baffles.