The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems.

An apparatus for processing a quantity of glass melt comprises a segmented tube including a first tube segment and a second tube segment. A second end portion of the first tube segment is joined to a first end portion of the second tube segment. In further examples, methods of fabricating a segmented torsion tube include joining together segmented torsion tubes at an integral solid-state joint.

The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems. The treatment fluid can comprise a water-based fracturing fluid or a waterless liquefied petroleum gas (LPG) fracturing fluid.

Various examples of systems and methods for making microspheres, microparticles, and emulsions are provided. In one example, a system and method for forming microspheres comprises: pumping a dispersed phase liquid and a continuous phase liquid into a levitating magnetic impeller pump to subject the dispersed phase liquid and continuous phase liquid to a high shear environment within the impeller pump's pump chamber. In another example, a system and method for forming an emulsion comprises: pumping a dispersed phase liquid and an inner aqueous phase liquid into a levitating magnetic impeller pump to subject the dispersed phase and the inner aqueous phase to a high shear environment within the impeller pump's pump chamber.

A method for producing a resin particle dispersion includes: obtaining a phase-inverted emulsion by adding a neutralizer to a resin solution prepared by dissolving a resin having an acid value in an organic solvent to thereby neutralize the resin and then adding an aqueous medium to the resulting resin solution to subject the resin to phase inversion emulsification; and removing the organic solvent from the phase-inverted emulsion. In the course of obtaining the phase-inverted emulsion, a maximum agitation power per unit mass (kg) of the resin when the resin solution containing the aqueous medium added thereto is agitated to perform the phase inversion emulsification is from 0.4 W to 20 W inclusive.

The subject matter of this specification can be embodied in, among other things, a mixing system that includes a heating assembly configured to heat liquid, and a mixing assembly including a tank defining a cavity and configured to retain liquid, an inlet in fluidic communication with the cavity and configured to receive liquid from the heating assembly, a mixing impeller assembly configured to mix contents of the cavity, an actuator configured to actuate the mixing impeller assembly to mix contents of the cavity, and an outlet in fluidic communication with the cavity and having a valve configured to selectively prevent and permit egress of contents of the cavity.

A container, that includes a transparent portion, which reveals an interior portion of the container, an access aperture communicating with the interior portion of the container, and a lid adjacent the access aperture. A first liquid component is placed into the interior portion. A second liquid component is poured into the interior portion. The lid of the container is closed to fully enclose the first and second liquid components. The components are agitated until the first and second liquid components are a mixture of uniform color, without an appearance of marbling and swirling, when viewed through the transparent portion of the container. The lid is opened to expose the mixture of uniform color. The mixture of uniform color is poured from the container into a receiving structure. The mixture of uniform color is transformed into a closed-cell polyurethane structure within the receiving structure.

The present invention relates to a mixing device having a stirring element that comprises: a container for receiving fluids and/or solids; and at least one rotatable stirring element for mixing the fluids and/or solids; wherein the stirring element comprises a first bearing element and a second bearing element which are arranged at or near opposite ends of the stirring element; wherein the first bearing element is mounted on a first face of the container and the second bearing element is mounted on an opposite second face of the container; wherein the first bearing element comprises at least one non-permanently magnetized element such that it can be moved in rotation by externally induced reluctance forces, and wherein the second bearing element is mounted in a contactless manner by externally induced magnetic forces. The invention also relates to a mixing device system.

The present invention addresses the problem of providing a water-in-oil emulsified composition having improved workability in a freezing range. This water-in-oil emulsified composition contains, as constituent fatty acids, 7-29 wt % of lauric acid and 7-19 wt % of palmitic acid, the weight ratio of stearic acid/lauric acid being 0.1-1.6, and has a hardness of 500-1500 gf at −18° C. The water-in-oil emulsified composition according to the present invention, when delivered or stored in a frozen state, can be directly and easily cut into pieces in any shape without requiring an operation such as thawing or temperature adjustment.

The present invention addresses the problem of providing a water-in-oil emulsified composition having improved workability in a freezing range. This water-in-oil emulsified composition contains, as constituent fatty acids, 7-29 wt % of lauric acid and 7-19 wt % of palmitic acid, the weight ratio of stearic acid/lauric acid being 0.1-1.6, and has a hardness of 500-1500 gf at −18° C. The water-in-oil emulsified composition according to the present invention, when delivered or stored in a frozen state, can be directly and easily cut into pieces in any shape without requiring an operation such as thawing or temperature adjustment.