RU89977U1 - MIXER - Google Patents

Abstract

A mixer for preparing a solution mainly of concentrated acid and diluent, comprising a housing with pipelines for concentrated acid, diluent and a solution of a given concentration, characterized in that the mixer is equipped with a mixing fluid supply unit coaxially placed inside the aforementioned housing and made in the form of a cylinder, in which also co-axially placed the aforementioned concentrated acid conduit provided with a perforated end and secured with respect to qi the cylinder with a perforated centralizer, wherein the mixing fluid supply unit is fixed in the aforementioned housing with at least two perforated centralizers, the aforementioned pipelines for diluent and a solution of a given concentration are located in the upper part of the cylinder and the upper part of the aforementioned housing, respectively.

Description

The utility model relates to the field of mixing liquids and can be used in chemical and mining industries, in particular, in hydrometallurgy in the sorption extraction of uranium, where it is necessary to mix concentrated acid with water or a circulating solution from the main sorption process and there is a need for uniform and safe acid distribution throughout the mixer.

A device for mixing components in a liquid medium is known, including a housing with a dynamo-asymmetric mixer and fluid supply and drain pipes (Patent RU No. 2130334, B01F 003/08, B01F 003/12, B01F 007/00, publ. 05.20.1999).

A device for mixing liquids by means of a vertical shaft located in a pipe with an auger at the end is known (Patent RU No. 2179065, B01F 003/08, publ. 02/10/2002 - prototype).

However, as in the previous device for mixing liquids, the operation of the known device is based on the use of an additional energy source. The device is not economical, does not provide fast and high-quality mixing, in addition, the presence of moving elements can reduce the operability of the device.

This utility model is aimed at creating a mixer for quick and high-quality mixing of a liquid with aggressive acid with high working capacity.

The technical result consists in the fact that the utility model provides a mixer of simple design with no moving elements and ensures long-term operation with minimal maintenance and good mixing quality.

The technical result is achieved in that the mixer, comprising a housing with pipelines for concentrated acid, diluent and a solution of a given concentration, is equipped with a supply unit for miscible liquids. The feed unit is coaxially placed inside the housing and is made in the form of a cylinder. In the latter, a conduit for concentrated acid is also coaxially placed, provided with a perforated end and fixed relative to the cylinder with a perforated centralizer. The mixing fluid supply unit is fixed in the housing by at least two perforated centralizers. The pipeline for diluent is located in the upper part of the cylinder, the pipeline for a solution of a given concentration is mounted in the upper part of the mixer body.

The features distinguishing the proposed solution from the closest one according to the prototype characterize the presence in the mixer of a supply unit of miscible liquids placed inside the housing and made in the form of a cylinder.

Such a design with the placement of the pipeline for concentrated acid coaxially inside the cylinder, into which the diluent enters, and supplying the end of this pipeline with perforation, allows the acid to flow evenly into the volume of the cylinder filled with diluent, mix well, and then enter an even larger body volume, going through perforated centralizers. The mixing process is improved by turbulizing the flow and lifting up. This is facilitated by the location of the pipelines for the diluent and for the acid solution of a given concentration.

The design of the utility model does not contain movable elements, is easy to manufacture, and ensures its long-term operation with minimal maintenance.

In addition, the mixer is economical, since its operation is based on the use of flow energy and does not require additional energy costs.

Analysis of scientific, technical and patent literature showed that distinctive features from the prototype signs meet the criterion of "novelty."

The mixer is shown in the drawings:

figure 1 is a General view of the mixer in section;

figure 2 - section aa in figure 1.

The design consists of a housing 1 with a pipeline 2 for a solution of a given concentration located in the upper part of the housing 1.

Co-axially with the latter, a mixing fluid supply assembly is mounted. The feed unit consists of a cylinder 3, a pipe 4 for diluent and a pipe 5 for concentrated acid with a perforated end 6.

The pipe 5 is also coaxially placed in the cylinder 3 and fixed in it with a perforated centralizer 7.

In turn, the cylinder 3 is fixed in the housing 1 by at least two perforated centralizers 8.

A pipe 4 is located in the upper part of the cylinder 3. In the lower part of the housing 1, a pipe 9 is mounted for draining the solution or cleaning the mixer.

The design of the mixer must be airtight, for this flange connections 10 and 11 with gaskets 12 and 13 are provided.

The cylinder 3 and the pipe 5 are connected to the flanges 10 and 11 as hermetically, for example, by welding.

In addition, pipelines 2, 4, 5 and 9 are provided with flanges for connection to the corresponding equipment, according to the technological process. The mixer is equipped with a pipe 14 for communication with the atmosphere.

The mixer is included in the technological chain of the denitration site during the sorption extraction of uranium.

Preliminarily calculate the required concentration of acid solution for the process of resin regeneration for sorption and for the preparation of a desorption solution. To do this, acid and diluent flow meters are included in the process chain (not shown in the drawing).

The mixer operates as follows. The diluent in the form of water or circulating solutions from the main process containing a weak acid solution is fed through line 4, the volume of the mixer is filled, and concentrated sulfuric acid is supplied from the pressure tank (not shown). Sulfuric acid through a pipe 5 through a perforated end 6 enters the cylinder 3 of the node supplying miscible liquids. The centralizer 7 not only secures the end of the pipeline 5, but also helps to better mix concentrated acid with a diluent. Then the solution enters the total volume of the housing 1 of the mixer. Under the pressure of the flow, the solution moves from bottom to top and, passing centralizers 8, the mixing process is enhanced by the turbulization acquired by the flow. A solution of a given concentration and well mixed, ready for the technological cycle, comes out of pipeline 2.

The mixer is based on the use of flow energy and does not require additional energy consumption.

The design is simple to manufacture, efficient and ensures its long-term operation with minimal maintenance and good mixing quality.

To eliminate corrosion, the design of the mixer can be performed, for example, from a polyethylene housing, cylinder and pipelines.

Claims (1)

A mixer for preparing a solution mainly of concentrated acid and diluent, comprising a housing with pipelines for concentrated acid, diluent and a solution of a given concentration, characterized in that the mixer is equipped with a mixing fluid supply unit coaxially placed inside the aforementioned housing and made in the form of a cylinder, in which also co-axially placed the aforementioned concentrated acid conduit provided with a perforated end and secured relative to qi the cylinder with a perforated centralizer, wherein the mixing fluid supply unit is fixed in the aforementioned housing with at least two perforated centralizers, the aforementioned pipelines for diluent and a solution of a given concentration are located in the upper part of the cylinder and the upper part of the aforementioned housing, respectively.