An exhaust gas aftertreatment device for a motor vehicle has an exhaust pipe and a mixing chamber arranged in the exhaust pipe to mix an exhaust gas stream with a reducing agent which can be introduced into the mixing chamber by a dosing device. The mixing chamber has a wall which is on the input side as viewed in a main flow direction of the exhaust gas stream through the exhaust pipe and in which a first inlet for the exhaust gas is formed. The first inlet extends in some regions in a lateral surface region of the input-side wall such that exhaust gas entering the mixing chamber through the first inlet can be set in a rotating motion inside the mixing chamber. The dosing device has an outlet device where a longitudinal axis of the outlet device is inclined towards the main flow direction of the exhaust gas stream.

In accordance with presently disclosed embodiments, systems and methods for managing bulk material efficiently at a well site are provided. The disclosure is directed to a container support frame that is integrated into a blender unit. The support frame is used to receive one or more portable containers of bulk material, and the blender unit may include a gravity feed outlet for outputting bulk material from the containers directly into a mixer of the blender unit. The blender unit with integrated support frame may eliminate the need for any subsequent mechanical conveyance of the bulk material (e.g., via a separate mechanical conveying system or on-blender sand screws) from the containers to the mixer. As such, the integrated blender unit may be lighter weight, take up less space, and have a lower cost and complexity than existing blenders.

An apparatus (100) for mixing multiphase flowing particles. The apparatus (100) comprises a conduit (100a) adapted to channelize the multiphase flowing particles. At least one flow diverter (101) is positioned in the conduit (100a), which is adapted to divert the flow of multiphase flowing particles into a plurality of flow streams. Further, at least one flow element (102) is disposed in the conduit (100a) along at least one of the plurality of flow streams, which is configured to inject fluid onto the plurality of flow streams at a velocity greater than the velocity of the plurality of flow streams. This induces a swirling flow of at least one of the plurality of flow streams, thereby facilitating mixing of the multiphase flowing particles in the conduit (100a).

An apparatus and method for creating and dispensing a solution formed of a solid product which is eroded or dissolved in a liquid, which may include methods for creating turbulent flow of the liquid. The apparatus includes an inlet portion for introducing the liquid into the dispenser system, a solution forming assembly, and an outlet portion for dispensing the solution. The solution forming assembly may include a support structure configured to support the solid product, and a reservoir coupled to the support structure, the reservoir configured to hold the liquid and allow flow of the liquid into and out of the reservoir, the reservoir including a base and one or more sidewall portions. The reservoir further including one or more liquid inlets located in the one or more sidewall portions configured to introduce liquid into the reservoir to contact the solid product and create the solution.

Examples of system for generating vortex cavity are disclosed. The system comprises a vessel into which a fluid is injected through one or more inlet ports and a fluid circulating system configured to circulate the fluid through the vessel such that the fluid is removed from the vessel through an outlet port and is returned back into the vessel through the one and more inlet ports. A first spinner is mounted at one wall of the vessel while a second spinner is mounted at the opposite wall of the vessel such that the second spinner is at some distance away from the first spinner and it faces the first spinner. When the fluid circulating system starts circulating the fluid within the vessel a vortex cavity is formed that extends between the first and the second spinners so that one end of the vortex cavity sits on the first spinner while the opposite end of the vortex cavity sits on the second spinner.

An exhaust gas post-treatment apparatus comprises a first mixing chamber assembly and a second mixing chamber assembly. The first mixing chamber assembly comprises a first housing provided with a first mixing chamber, a gas inlet pipe, a first mixing pipe at least partially located in the first mixing chamber and a perforated pipe located in the first mixing pipe. The first mixing pipe includes a first pipe body located in the first mixing chamber and a second pipe body extending from the first mixing chamber, wherein a side wall of the first pipe body is provided with apertures and flow plates located in the first mixing chamber. In the axial direction of the perforated pipe, the perforated area of the perforated pipe fully covers the length of the flow plates. The second mixing chamber assembly includes a flow-guiding hood.

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.

An exhaust gas aftertreatment system includes an exhaust gas conduit a mixer, and a plurality of flow disrupters. The exhaust gas conduit is centered on a conduit center axis and includes an inner surface. The mixer includes a mixer body and an upstream vane plate. The upstream vane plate has a plurality of upstream vanes. At least one of the upstream vanes is coupled to the mixer body. The flow disrupters are disposed downstream of the mixer and circumferentially around the conduit center axis. Each of the flow disrupters is coupled to the exhaust gas conduit or integrally formed with the exhaust gas conduit. Each of the flow disrupters extends inwardly from the inner surface.

A fine bubble generator may include an inlet; an outlet; a first fine bubble generation portion; and a second fine bubble generation portion. The first fine bubble generation portion includes: a diameter-reducing flow path and a diameter-increasing flow path. The second fine bubble generation portion includes: a first swirling flow generation portion; and a second swirling flow generation portion. The first swirling flow generation portion includes: a first outer peripheral portion; and a plurality of first vanes disposed configured to generate a first swirling flow flowing in a first swirling direction with respect to a center axis of the second fine bubble generation portion. The second swirling flow generation portion includes: a second outer peripheral portion; and a plurality of second vanes configured to generate a second swirling flow flowing in a second swirling direction opposite to the first swirling direction with respect to the center axis.

The invention provides a device for enhancing liquid-liquid emulsification. The device includes a jet part and a mixing part connected to the jet part. The jet part includes a feed tee for feeding major and dispersed phases, wherein the feed tee includes a first port, a second port, and a third port. The first port is used for feeding the major phase, and the second port is equipped with an ejector for feeding the dispersed phase. The ejector consists of an ejector housing and an ejector inlet section, as well as a spiral structure, a flow-guided structure, and an ejector pin structure that are connected sequentially. The mixing part includes a mixer comprising a cylindrical mixer shell, a mixer inlet section, a mixer outlet section, as well as a spiral section, a cavity section, and a variable diameter section for enhancing emulsion breakup and dispersion. A method for enhancing liquid-liquid emulsification is also disclosed. The emulsion produced by the device and method of the invention is uniformly dispersed, has long stability, and the device has a compact structure and low energy consumption. It is particularly suitable for liquid-liquid emulsification processes in fields such as chemical industry, food, coatings, and cosmetics.