A system for dispensing a biocompatible reactive formulation includes a first chamber containing a first fluid having a first reactive component, a second chamber containing a second fluid having a second reactive component, and a third chamber containing a third fluid. A spray tip assembly is configured for spraying a final mixture of the first, second and third fluids. The spray tip assembly has a spray tip housing, a mixing element disposed within the spray tip housing, a mixing chamber located between the mixing element and an inner surface of the spray tip housing. The mixing element has a proximal end adjacent the proximal end of the spray tip housing and a distal end adjacent the distal end of the spray tip housing, a third fluid inlet opening at the proximal end of the mixing element, and one or more third fluid exit openings formed in the outer surface of the mixing element that are in fluid communication with the third fluid inlet opening and that extend laterally to the outer surface of the mixing element for being in fluid communication with the mixing chamber. A fluid connector is secured to the proximal end of the spray tip housing and opposes the proximal end of the mixing element. The fluid connector has first and second fluid channels in fluid communication with the mixing chamber, and a third fluid channel in fluid communication with the third fluid inlet opening of the mixing element. A pump assembly is coupled with the first, second and third chambers for simultaneously forcing the first, second and third fluids to flow through the first, second and third fluid channels of the fluid connector and into the proximal end of the spray tip housing.

Disclosed is a water dispensing machine and a carbonated beverage dispensing system which facilitates a combination of carbon dioxide with water in a configuration which provides a smaller footprint and reduces or eliminates dependency on remotely located carbon dioxide tanks and flavoring systems. The system may be configured to produce only carbonated water or to allow the user to select carbonated water or chilled water, and, alternatively, ambient, unchilled water. A carbonator of the system introduces carbon dioxide to a chilled water stream using an injector with slots. This inline, on demand carbonation system provides benefits over carbonator tank systems which carbonate large volumes of carbonated water in bulk.

A material distributing and mixing apparatus A conduit having a fluid inlet and fluid outlet houses a mixing element The mixing element includes rectangular segments forming forward facing V-sections and rearward facing V-sections The forward facing V-sections form vertical apexes that face an incoming fluid stream while additive inlet ports are positioned proximate thereto. The forward facing V-sections are positioned proximate to the top and bottom surfaces of the conduit while the rearward facing V-sections form apexes which are substantially horizontal, the rearward facing V-sections being positioned proximate the vertically extending side walls of the conduit

A fire-fighting system including: a pressurized gas supply; a vessel for storing a solution of water and a foaming agent, the vessel being connected to the pressurized gas supply for pressurizing the vessel in use; and a mixer for mixing gas from the pressurized gas supply with the solution to generate foam, wherein the mixer includes: a solution inlet for receiving the solution from the vessel; a foam outlet; one or more injection ports connected to the pressurized gas supply for injecting gas bubbles into the solution to form a mixture of the solution and the gas bubbles; and a foaming chamber extending between the solution inlet and the foam outlet, the mixture flowing through the foaming chamber to generate foam at the foam outlet, at least one internal surface of the foaming chamber including a shearing structure for shearing the gas bubbles as the mixture flows through the foaming chamber.

A gaseous fuel mixer assembly for an engine includes a mixer housing forming gas delivery openings, and positioned to extend across a flow path formed by an intake conduit for the engine. A spool valve is within a central bore in the mixer housing and includes gas distribution openings selectively connectable to the gas delivery openings by moving the spool valve within the mixer housing using a piezoelectric actuator coupled with the spool valve by way of a pivot arm. Sealing lands of the spool valve are in an alternating arrangement with the gas distribution openings, such that at the closed position the sealing lands block the gas distribution openings from the gas delivery openings, and at the open position the respective openings are fluidly connected.

An apparatus for generating and mixing gas bubbles into an aqueous solution includes a structure defining an interior fluid-flow chamber extending along a longitudinal axis between a liquid input end and a liquid output end. The structure is characterized by a gas injection portion and a mixing vane portion. The gas injection portion is located downstream from the liquid input end and upstream from the liquid output end. The gas injection portion defines a first region of the interior fluid-flow chamber and a gas injection lumen that is surrounded by the interior fluid-flow chamber. The gas injection lumen, which extends along a length of the gas injection portion, is configured to inject gas from the interior of the gas injection lumen into the surrounding interior fluid-flow chamber. The mixing vane portion extends in the downstream direction from the gas injection portion and define a second region of the interior fluid-flow chamber.

According to an embodiment of the present disclosure, an exhaust gas treatment apparatus may include: a preprocessor configured to primarily remove harmful substances from exhaust gas produced by combustion; and a postprocessor configured to further remove harmful substances from preprocessed gas, which is the exhaust gas from which the harmful substances have been primarily removed by the preprocessor, wherein the postprocessor may include a postprocessor housing having a preprocessed gas inlet through which the preprocessed gas is introduced and a postprocessed gas outlet through which postprocessed gas from which harmful substances have been further removed by the postprocessor is discharged and forming a flow path of the preprocessed gas therein, and a diffuser disposed adjacent to the preprocessed gas inlet and configured to diffuse the preprocessed gas introduced through the preprocessed gas inlet.

An exhaust duct for a fossil fuel powered engine includes an exhaust gas passage, a cooling fluid passage, a mixing device for mixing cooling fluid with the hot exhaust gas and a selective catalytic reduction catalyst for removing nitrogen oxides arranged in the exhaust gas passage. The mixing device has a mixing chamber with a first wall and an opposed second wall, the first and second wall arranged upstream of the selective catalytic reduction catalyst in the exhaust gas passage and extending over the cross-sectional area of the exhaust gas passage, both walls perforated by through holes, wherein through holes of the first wall are connected with through holes of the second wall in pairs by pipes extending through the mixing chamber, the pipes perforated by at least one hole into the mixing chamber and the cooling fluid passage ending into the mixing chamber.

A gas infuser includes a mixing chamber and a liquid injector. Gas is supplied into the mixing chamber and liquid flows through openings of the injector to mix with the gas in the mixing chamber and form a gas-infused liquid.

A system for separating a volatile hydrocarbon from a water stream includes a lead mixer-injector device that receives an untreated water stream including a volatile hydrocarbon, injects compressed air into the untreated water stream and mixes the injected air with the untreated water stream to form a first injected fluid stream. A shear mixing device receives the first injected fluid stream from the mixer-injector device and shear gas bubbles within the received first injected fluid stream so that a frothed stream is formed. A lead degas separator receives and separates the frothed stream from the shear mixing device into a volatile hydrocarbon stream and a partially treated water stream based on difference in density. A compressor directs clean and oil free compressed air to the lead mixer-injector device.