The present inventive concept relates to a system for dissolving gas. Specifically, an embodiment of the present inventive concept provides a system for dissolving gas, the system including a water supply unit configured to supply water, a gas supply unit configured to supply gas, a gas solution generation unit connected to the water supply unit and the gas supply unit, and a bubble gas solution generation unit connected to a rear end of the gas solution generation unit, wherein the gas solution generation unit includes a first gas solution generator connected in parallel to the gas supply unit and configured to generate a first gas solution and at least one second gas solution generator connected in parallel to the gas supply unit, connected in series to the first gas solution generator to receive the first gas solution from the first gas solution generator, and configured to generate a second gas solution having a gas concentration higher than a gas concentration of the first gas solution, and the bubble gas solution generation unit is connected to the second gas solution generator to receive the second gas solution from the second gas solution generator and generates a third gas solution containing a gas whose particles are smaller than particles of the gas contained in the second gas solution.

There is provided an inline saturator system and method for gas exchange with an aqueous-phase liquid. The system includes a pressure vessel, configured to receive a first liquid and a first gas from external sources and to discharge a second liquid and a second gas from the pressure vessel, and a gas infusion device situated within the pressure vessel. The gas infusion device is configured to receive the first liquid and first gas, to facilitate gas exchange therebetween, producing the second liquid and the second gas, and to discharge the second liquid and second gas into the pressure vessel. The system further includes a recirculation system configured to direct a portion of liquid within the pressure vessel back into the saturator device, where injection of the redirected liquid into the gas infusion device forces the first liquid into the gas infusion device for the gas exchange.

A pressure washer includes a pump for pressurizing a primary fluid flow, the pump including a pump inlet for receiving fluid from a common fluid source and a pump outlet for supplying a pressurized primary fluid and a jet pump including a primary fluid inlet fluidly coupled to the pump outlet, a secondary fluid inlet configured to receive fluid from the common fluid source, and a fluid outlet. In a high pressure operating mode, all of the pressurized primary fluid flows through the jet pump and exits through the fluid outlet of the jet pump. In a high flow operating mode, all the pressurized primary fluid flows through the jet pump and entrains a secondary fluid supplied through the secondary fluid inlet from the common fluid source so that the secondary fluid also flows through the jet pump, resulting in a combined fluid flow of the primary fluid and the secondary fluid that exits through the fluid outlet of the jet pump.

An apparatus and method for mixing fluids, gases and solids together where the apparatus includes at least two mixing head sections that are mirror images of each other and have abutting surfaces that are abutted together. The at least two mixing head sections have a first bore that extends therethrough from an inlet to an outlet, and at least one second bore whose length is longer than the first bore that extends from the inlet to the outlet.

An apparatus is provided having a heat generation device such as a boiler. A hypersonic energy harvester is provided having a first input and a second input. The first input and the second input are fluidly coupled to the heat generation device. A variable speed pump is fluidly coupled to supply liquid from the heat generation device to the hypersonic energy harvester. A deaerator is fluidly coupled to receive condensate from the hypersonic energy harvester.

There is provided an inline saturator system and method for gas exchange with an aqueous-phase liquid. The system includes a pressure vessel, configured to receive a first liquid and a first gas from external sources and to discharge a second liquid and a second gas from the pressure vessel, and a gas infusion device situated within the pressure vessel. The gas infusion device is configured to receive the first liquid and first gas, to facilitate gas exchange therebetween, producing the second liquid and the second gas, and to discharge the second liquid and second gas into the pressure vessel. The system further includes a recirculation system configured to direct a portion of liquid within the pressure vessel back into the saturator device, where injection of the redirected liquid into the gas infusion device forces the first liquid into the gas infusion device for the gas exchange.

An apparatus that produces and dispenses foam comprises a housing, an adjustable water flow member, an adjustable foam concentrate flow member, a first mixing chamber comprising an outlet, a water pressure reducing member with a portion thereof disposed within the first mixing chamber, a second mixing chamber in a communication with the outlet from the first mixing chamber, an air pressure reducing member with a portion thereof disposed within the second mixing chamber, a third mixing chamber in a communication with an outlet from the second mixing chamber, the third mixing chamber comprising a port in a communication with an external environment to the housing, and a screen member disposed within the third mixing chamber and configured to convert a mixture of air, water and foam concentrate exiting the outlet of the second mixing chamber into the foam, the foam being dispersed through the port during operation of the apparatus.

A technique facilitates mixing of fluids for use in well treatment operations. According to an embodiment, a dry powder material, e.g. a friction reducer, may be thoroughly mixed into fluid or fluids associated with a well treatment operation. The powder material is combined with liquid, e.g. water, via a series of Venturi mixers arranged to thoroughly mix the materials. In some applications, the Venturi mixers are mounted on a modular unit which is readily moved to a desired wellsite. Additional modular units may be added to increase the amount of product being mixed according to the demands of a given well treatment operation, e.g. a hydraulic fracturing operation.

A fluid mixing apparatus includes mixing conduits that extend through a fluid plenum and that define injection holes therethrough. The fluid plenum, which surrounds a first wall defining a main passage fluidly coupled to a low-pressure fluid source, is surrounded itself by a second wall defining a high-pressure plenum fluidly coupled to a high-pressure fluid source. The mixing conduits fluidly couple the high-pressure plenum to the main passage, and the fluid from the fluid plenum is delivered with the high-pressure fluid to the main passage, where the fluids mix before being discharged from an outlet of the main passage. The fluid mixing apparatus may be used to mix one or more fuels with high- and low-pressure air in a gas turbine combustor. Alternately, the fluid mixing apparatus may mix a fluid with high- and low-pressure water streams.

Liquid treatment apparatus comprises at least two chambers being first and second chambers through which a fluid can flow. The two chambers are separated by at least one choke nozzle which has an entrance in the first chamber and an exit in the second chamber. The choke nozzle comprises a converging section at its entrance, a throat section, a backward-facing step immediately after the throat section, and an exit section at its exit wherein the exit section diverges from the step. Similarly constructed mixing nozzles may be included in the apparatus. The apparatus is especially useful in processes requiring a gas to be entrained in a fluid so that the gas is in the form of very small bubbles that do not tend to coalesce and flash off such as in the dissolution of gold and other precious metals from ore and in the removal of arsenic from an ore.