Abstract: A gas is dissolved into a liquid by first pressurizing the liquid to a predetermined level. The pressurized liquid is then directed into a hydrocyclone to form a vortex stream having an evacuated central area. The hydrocyclone has an inlet aperture size and configuration and a barrel diameter and length optimized for liquid particle movement through the liquid vortex stream. Gas is injected into the evacuated area for absorption into the liquid vortex stream. The liquid is then directed from the hydrocyclone into a diffusion column, and subsequently to a pressure chamber in order to collect non-adsorbed gas. The collected non-adsorbed gas is then recycled back into the evacuated area of the vortex stream. Pressurized gas is added to the system as the gas is adsorbed and dissolved into the liquid.

Abstract: A system for treating waste water includes a dry-feed hopper and a wetting flume for receipt of dry flocculant and waste water. The dry-feed hopper includes a container with a volume of dry flocculant therein. A manifold receives a nozzle connected to an air source to periodically deliver dry flocculant to the wetting flume. An inline static mixer is provided after the wetting flume. The output of the inline static mixer is introduced into an agitation stage via a constricting nozzle which includes a base support and a cylindrical housing with an outer wall and an, inner wall and is resiliently mounted to the top surface of said base support. A downward spiraling length of corrugated hose is positioned between the outer wall and the inner wall. Waste water from the inline static mixer is introducing into the top entry port of the length of corrugated hose to exit at the bottom exit port of the corrugated hose.

Abstract: The present invention pertains to an apparatus for mixing mineral acid (e.g. sulfuric acid), and hydroxide bases (e.g. calcium hydroxide) to produce various useful mixtures (e.g. cleaning products, food production, etc.). The present invention provides an apparatus for reproducibly injecting an acid and a base to form a mixture in a controlled environment. In one aspect, the apparatus comprises a chamber having a distribution-blending-cooling dish suspended above the mixing chamber, an acid delivery system for introducing diluted acid into the chamber above the distribution-blending-cooling dish, and a base delivery system for introducing the base into the chamber by passing the base through the distribution-blending dish. The acid is injected preferentially and circumferenceially to provide, enhance, and cause thorough blending. The injectors or eductors are in the mixing chamber, and the blending dish is secondary to the initial introduction of acid.

Abstract: A method and apparatus for efficiently and rapidly mixing liquids in a swirling flow micro system is disclosed. The micro mixer disclosed is a passive mixer of planar structure for simpler configuration and fabrication. The streams injected tangentially into the mixing chamber produce circular multi-lamination for effective mixing of the injected streams. The injection velocity and position can be altered by adjusting the contour and exit area of the nozzles. The planar mixer can be fabricated by the normal photolithography process in conjunction with anodic bonding. More economically the layered structures of the mixer can also be fabricated in thin plastic sheets using stamping, embossing or other thermal deformation techniques. The different layers are thermally bonded for mass production.

Abstract: A mixer for mixing a solid or an additional liquid into a liquid within a mixing vessel using a vortex action obviates direct application of the introduced solid or liquid with the downstream end of the vortex by bending the axis of rotation of the vortex. In one form this is effected by laterally offsetting a discharge outlet of the mixing vessel relative to the upper end portion of the vessel into which the liquid is introduced. The vortex within the vessel is maintained at a predetermined level by applying a static head to the liquid in the vessel. This is preferably achieved by maintaining a predetermined static head of mixture in an outer vessel into which the mixing vessel discharges.

Abstract: Within each of a microfluidic mixer apparatus and a microfluidic reactor apparatus, as well as respective methods for operation thereof, there is provided a substrate having formed therein an aperture. Within the microfluidic mixer apparatus and its method of operation there is introduced into the aperture at least a pair of reagents through a pair of channels which terminate obliquely at the aperture, such as to provide a swirling mixing of the pair of reagents. Within the microfluidic reactor apparatus, the aperture comprises a first end portion contiguous with a middle portion in turn contiguous with a second end portion, where the middle portion, but not the first end portion or the second end portion, has at least one baffle intruding therein.

Abstract: A method and apparatus for mixing a first material and a second material is described in which the first material comprises a mixture of two or more dissimilar components which it is desired to separate. The method and apparatus involve forming an intimate mixture of the two materials prior to separating the two dissimilar components of the first material. The apparatus involves the use of a hydrocyclone for aerating or gasifying a feed stream, such as waste water containing oleophilic residue or food residue, to entrain the particles of residue within the air or gas bubbles prior to separating the oil or food residues from the carrier material, typically water. Instead of using the hydrocyclone as a separator, it is used as a mixer which provides surprising results and facilitates separation of the aerated components.

Abstract: A method of and apparatus for feeding a chemical into a liquid flow are especially suited for use with a headbox of a paper machine, particularly for feeding a retention aid into a fiber suspension flow going to the headbox so that in a mixing apparatus feed liquid is added into the retention chemical solution, prior to introducing the solution into the fiber suspension flow guided to the paper machine. The feed liquid is preferably a circulation water from the paper mill, or another non-clean liquid from a paper mill.

Abstract: A charging assembly is provided for introducing a product into a mixing vessel of the type comprising a stirring mechanism having a drive shaft (1) into the vessel through a top port (3). An agitator (7) is connected to the lower end of the drive shaft (1) and driving means (20) are provided on the upper end of the drive shaft (1). An adapter element (10) is disposed between the driving means (20) and top port (3) so as to surround an upper portion (1a) of the drive shaft (1). The adapter element (10) includes at least one inlet port (11) for introducing said product into an annular space (13) defined between the adapter element (10) and the drive shaft (1).

Abstract: An order-changing microfluid mixer comprises an extended microfluidic channel and a chamber structure that provides order-changing functions to microfluid when the microfluid passes through the chanter structure. The order-changing chamber has two openings connected to said microfluidic channel and divides said microfluidic channel into two sections. When a microfluid is driven from one section of the microfluidic channel to the other, the microfluid enters into the order-changing chamber and flows along a first side of the order-changing chamber, whereby portions of the microfluid positioned adjacent to the second side of the order-changing chamber remain unmoved.

Abstract: An apparatus for producing and dispensing whipped soft drinks, hot chocolate and beverages which does not use mechanical whipping such as rotating blades, but rather accomplishes the whipping of the mixture of syrup and water used to produce the beverage by intermixing within a vented mixing chamber intersecting streams of syrup and water that are directed toward the intersection point under pressure. The apparatus embodies solenoid valves to control the flow of syrup and water into the mixing chamber of the apparatus.

Abstract: The invention is a method and apparatus for mixing a powder into a liquid. In a first aspect, the invention includes an apparatus into which a powder can be fed for mixing into a liquid. The apparatus comprises a wetting housing defining a wetting chamber having a top part, a bottom part, a top port in the wetting chamber's top part, and a bottom port in the wetting chamber's bottom part; means for preventing powder from clumping by fluid force imparted from the wetting chamber's top part to keep the powder from accumulating before mixing; and a spray at the wetting chamber's bottom part to swirl the liquid and mix the powder in the liquid. In a second aspect, the apparatus is a part of a system including a tank that, when filled, contains the liquid and includes a first port and a second port permitting fluid flow through the tank; a source of the liquid; and a controller controlling the operation of the wetting chamber and the tank.