A foam production method includes mixing liquid nitrogen with a foaming material to produce foam. A gas is produced in situ from liquid nitrogen. As the ratio of the volume of the gas produced by gasification of liquid nitrogen to the volume of the liquid nitrogen is relatively high, when a large gas supply flow is needed to generate a large foam flow, a liquid nitrogen storage device of a small volume can be used instead of bulky air supply devices such as high-pressure gas cylinders, air compressors, air compressor sets and the like, reducing the volume of the air supply device. In addition, the liquid nitrogen used in foaming will release nitrogen gas after the foam blast, such that the nitrogen is also able to inhibit combustion on the surface of burning materials, accelerating the extinguishing of the fire.

A variegator and a process for using it. The variegator permits the manufacturer to obtain desirable patterns of distribution of sauce and chunks in frozen confections while at the same time permitting fast cleaning-in-place times to minimize factory downtime. The variegator comprises a) one or more conduits, each suitable for feeding a base frozen confection to a first opening or set of openings into a chamber, b) one or more conduits suitable for feeding a fluid variegating material such as a sauce through a second openings or set of openings at a level below the first set into the chamber below the base frozen confection opening, and c) a static mixer below the variegating material opening, the static mixer comprising at least two baffles.

A stirring device of a plug-flow fermentation device includes a shaft rotatable about an axis of rotation which defines an axial direction. The stirring device further includes a boundary stirring element that defines the axial extent of a stirring volume covered by the stirring device. A nearest neighbor of the boundary stirring element in the axial direction has an axial maximum width which is smaller than an axial maximum width of the boundary stirring element and which is larger than an axial maximum width of a next-nearest neighbor of the boundary stirring element.

A brine maker is provided having a substantially cuboid shape. The brine maker may include: a hopper having a top opening configured to receive a solute from above the brine maker; a partition screen separating a solute side of the hopper from a brine side of the hopper; and a plurality of solvent ports located along a bottom floor of the hopper, the solvent ports configured to direct a solvent across the bottom floor of the hopper toward the partition screen.

A method and system for forming a liquid mixture utilizes a mixing tank with a tank inlet oriented and configured to create a swirling liquid flow that forms a vortex within the tank. A portion of the swirling liquid is discharged through an outlet formed by an opening in a lower wall of the tank. At least a portion of the opening is offset to one side of a central axis of the lower wall. Liquid is circulated and reintroduced into the tank inlet. A material to be mixed is introduced into the swirling liquid flow within the tank interior to form a liquid mixture.

The present disclosure generally relates to a reactor, in particular to a multiphase interface reactor applicable to chemistry, chemical industry, food, medicine, cosmetics and other fields. The reactor comprises a reaction cylinder; at least one feed port opened in the reaction cylinder; a stirring device, at least a part of the stirring device being located inside the reaction cylinder; at least one cylinder including a first cylinder and a second cylinder, wherein, the reaction cylinder, the first cylinder, and the second cylinder communicate with each other; an annular space is formed between the reaction cylinder and the second cylinder, so that at least part of a reaction product is allowed to enter the annular space from the reaction cylinder, and enter the first cylinder from the annular space; and at least one discharge port arranged on the first cylinder.

A flow distribution system for distributing and dividing the flows of at least two separate fluids, the distribution system comprising: a three-dimensional nested structure of at least two fluid transporting fractals comprising at least a first fluid transporting fractal and a second fluid transporting fractal, each fluid transporting fractal having a respective fluid inlet which bifurcates to a plurality of fluid outlets, each fluid transporting fractal being configured to facilitate a flow therethrough independent from a flow in the other fluid transporting fractal, each fluid transporting fractal extending along and about a central axis between fluid inlet and a plurality of fluid outlets; wherein each fluid transporting fractals comprises of a series of recursive bifurcation units assembled in a selected number of stages, each bifurcation unit comprising a Y-shaped bifurcated element which is fluidly connected to two successive bifurcation units, each successive bifurcation unit being rotated relative to the central axis by an angle of between 60 and 120 degrees relative to the previous stage; each fluid transporting fractal is intertwined with the other fluid transporting fractal; each fluid transporting fractal is positioned offset from the other fluid transporting fractal about the central axis and are arranged such that each fluid outlet from one of the fluid transporting fractals is located adjoining a fluid outlet of the other fluid transporting fractal, and each fluid transporting fractal is centered about a flow axis which is laterally inclined from greater than 0 to 20 degrees from the central axis and longitudinally inclined from greater than 0 to 20 degrees from the central axis.

A mixing chamber is loaded with a first fluid. While a volume of the first fluid within the mixing chamber is constant, first and second streams of a second fluid are injected into the mixing chamber along first and second injection directions. As a result of injecting the first and second streams of the second fluid into the mixing chamber, the first and second streams of the second fluid impinge one another so as to generate within the mixing chamber at least one further stream of the second fluid that mixes with the first fluid and that flows in a direction different to the first and second injection directions.

A method for stirring resin pellets, which includes stirring adhesive resin pellets in a liquid in a stirring tank equipped with a stirring impeller, under the condition satisfying the following relational expression (I):

[00001]$\begin{array}{cc}\frac{\rho .Math..Math.{\left({\mathrm{Np}}^{1/3}.Math.\mathrm{nD}\right)}^2}{\Delta .Math..Math.\mathrm{pgdp}}\geqq 10& \left(I\right)\end{array}$

wherein ρ is the density of the liquid (kg/m.sup.3), Np is the power number of the stirring impeller, n is the rotational speed (1/s), D is the diameter of the stirring impeller (m), Δρ is the difference in density between the resin pellets and the liquid (kg/m.sup.3), g is the gravitational acceleration (m/s.sup.2), and dp is the particle diameter of the resin pellets (m).

A mixing assembly includes a main flow conduit having an inlet end and an opposite outlet, a source of pressurized air at the inlet end, a container of stucco in fluid communication with the flow conduit, and a source of water in fluid communication with the flow conduit between the outlet and the container. The pressurized air draws stucco from the container into the flow conduit, and also draws water into the flow conduit to form an atomized slurry.