CN217025465U

CN217025465U - Particulate matter dissolving device

Info

Publication number: CN217025465U
Application number: CN202122519543.2U
Authority: CN
Inventors: 利小民; 裴陈新; 夏金霖; 李用存
Original assignee: Magang Group Holding Co Ltd
Current assignee: Magang Group Holding Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-07-22
Anticipated expiration: 2031-10-19

Abstract

The utility model relates to a particulate matter dissolving device, and belongs to the field of industrial waste acid treatment equipment. A particulate matter dissolving device comprises a mixing space, a mixing chamber and a dissolving chamber, wherein the mixing space is used for accommodating particulate matters and dissolving the particulate matters into a solution; the buffer part is arranged in the mixing space and is used for guiding and buffering the solution and improving the path and the time length for dissolving the particles; the buffer part comprises a plate structure, at least one end of the plate structure is arranged on the side wall of the mixing space and is supported by the side wall of the mixing space; the plate structures are arranged in a staggered mode, so that the solution flowing path is tortuous. Adopt crisscross each other, relative perpendicular plate structure that sets up, provide certain residence space for the particulate matter on the one hand, more importantly makes solution have the effect of the reciprocal backswing of flow process of delaying, and the particulate matter is erodeed in the reinforcing of backswing in-process, accelerates the particulate matter and dissolves.

Description

Particulate matter dissolving device

Technical Field

The utility model relates to the field of industrial waste acid treatment equipment, in particular to a treatment device for chemical product production and metallurgical hydrochloric acid pickling waste acid, namely a particulate dissolving device.

Background

With the production of large-scale units, the waste acid produced by the continuous pickling production line of cold rolled steel is very large. According to the calculation of a production line with general specifications, the amount of waste acid generated per hour can reach 8 cubic meters.

In order to treat the waste acid and improve the residual value of the waste acid, the conversion of the waste acid into high-purity ferrous chloride is an important method.

In the ferrous chloride purification process, the following steps are included:

1. heating the waste acid to over 80 ℃, and consuming free hydrochloric acid through scrap iron in the dissolving tank;

2. cooling the solution to below 50 ℃, raising the pH value by using ammonia water, and carrying out aeration oxidation to form ferric hydroxide or aluminum hydroxide;

3. adding flocculant and sending to a settling tank to clarify the solution.

In the continuous production, the solution amount for treating the ferrous chloride is large, the amount of ammonia water added in a centralized way is large, the local pH is very high, and the formed floccule is slowly dissolved. Meanwhile, ammonia water is added in a centralized manner, and the ammonia-containing solution is volatilized into the air to pollute the environment.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

Aiming at the problems of uneven mixing and overhigh local concentration and volatility caused by adding ammonia water to improve the pH value in the prior art, the utility model provides a particulate matter dissolving device, which improves the pH value of a solution by using a granular alkaline substance, realizes the rapid dissolution of particulate matters by using the specific structure of the device and has the effect of uniformly mixing the solution.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A particulate matter dissolving device comprises a mixing space, a mixing chamber and a dissolving chamber, wherein the mixing space is used for accommodating particulate matters and dissolving the particulate matters into a solution; the buffer part is arranged in the mixing space and is used for guiding and buffering the solution and improving the path and the time length for dissolving the particles; the buffer part comprises a plate structure, at least one end of the plate structure is arranged on the side wall of the mixing space and is supported by the side wall of the mixing space; the plate structures are arranged in a staggered mode, so that the solution flowing path is tortuous.

In a possible embodiment, the mixing space is a mixing tank.

In a possible embodiment, the mixing space is a flow-through pipe.

In a possible embodiment, the buffer is constituted by a plate structure; the plate structure is a straight plate.

In a possible embodiment, the buffer is constituted by a plate structure; the plate structure is a curved plate.

In a possible embodiment, the plate structures are staggered on opposite side walls of the mixing space.

In one possible embodiment, the plate structures on the opposing side walls are perpendicular to each other.

In a possible embodiment, the centers of curvature of the plate structures are each located at the central axis of the mixing space.

3. Advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

the buffer part formed by arranging the plate structure has the following effects: 1) the solution circulation path is prolonged, namely the reaction time of the solution and the particles is prolonged, and the dissolving sufficiency is improved; 2) place the particulate matter in the front portion of plate structure, the plate structure provides the guarantee space for the residence of particulate matter, improves particulate matter and solution interact power, improves the particulate matter promptly and is eroded the dissolving effect by solution.

Adopt crisscross each other, relative perpendicular plate structure that sets up, provide certain residence space for the particulate matter on the one hand, more importantly makes solution have the effect of the reciprocal backswing of flow process of delaying, and the particulate matter is erodeed in the reinforcing of backswing in-process, accelerates the particulate matter and dissolves.

Through such oscillation, the pH value of the solution is integrally more uniform.

If adopt the curved plate, then unify the centre of curvature on mixing space's central line, can well balance the relation between solution reverberation effect and the velocity of flow, be unlikely to make the velocity of flow slow down excessively, and it is better to stay the particulate matter effect. The uniform curvature center is also beneficial to the quick positioning and installation of the plate structure.

Drawings

FIG. 1 is a perspective view of a mixing tank in accordance with example 1;

FIG. 2 is a perspective view of a mixing tank according to example 2;

fig. 3 is a three-dimensional structure view of the gas impact swinging feeding device in the embodiment 2.

In the figure:

1. a mixing space; 2. a buffer section; 21. a plate structure;

3. a swing pipe; 31. a cylinder body; 32. a tapered mouth;

4. a horizontal support shaft; 5. a feeding pipe; 6. and (4) a spray head.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the utility model easy to understand, the utility model is further described in the following with the combination of embodiments.

Example 1

Referring to fig. 1, a particulate matter dissolving apparatus includes a mixing space 1 formed by a mixing tank. Dog teeth on two opposite side walls of the mixing tank are provided with plate structures 21 in a staggered manner, and the plate structures 21 on the two side walls are vertical to each other, so that a certain downstream inclination angle is formed and the flow of the solution is accelerated. In this embodiment, the plate structure 21 is a straight plate, one end of which is integrally formed on the mixing tank, and the other end of which extends over half of the mixing tank, so as to guide the liquid to the other side sufficiently and form a more obvious turbulent flow. The lower edge of the plate structure 21 sealingly engages the bottom surface of the mixing tank to prevent the particles from flowing away from the bottom.

When in use, waste acid discharged from the pickling line is continuously fed into a dissolving tank by heating to 90 ℃, and iron reacts with HCl in the dissolving tank to replace elements with positive potential compared with the iron. The solution after the preliminary impurity removal and the HCl content reduction in the dissolving tank flows out of the dissolving tank. The solution flowing out of the dissolving tank is at a temperature above 80 ℃ and the HCl content is less than 5 g/L. The solution then flows into a mixing tank. The openings of the plate structure 21 are staggered to create turbulent flow conditions in the fluid. At this time, the solid alkaline particles are scattered along the length direction of the dissolution tank, fall into the buffer part 2 consisting of a plurality of plate structures 21, are dissolved under the erosion of the introduced hot acid solution, and enter the next process along the dissolution tank.

The spreading of the solid alkaline particles is realized by adopting a gas impact swinging feeding device. In particular, the gas impact pendulum charging device comprises a pendulum pipe 3 arranged above the mixing tank. The side of the swing pipe 4 is provided with a through hole. The horizontal support shaft 4 penetrates through the through hole to movably support the swinging pipe 3. The lower part of the swing pipe 3 is a cylinder 31 leading to a mixing tank for spreading solid alkaline particles to the mixing tank. The upper part of the swing pipe 3 is provided with a conical opening 32 which is used for receiving and guiding the solid alkaline particles. An L-shaped feeding pipe 5 is arranged in the conical opening 32, and a spray head 6 is arranged at the tail end of the feeding pipe 5. The feeding pipe 5 and the conical opening 32 are independent from each other and are supported by an external fixed structure.

When the device is used, the other end of the feeding pipe 5 is pumped into solid alkaline particles by external equipment through compressed dry air or nitrogen, the feeding pipe 5 is close to the spray head 6, the direction of the feeding pipe 5 is changed from vertical to horizontal, the feeding pipe is sprayed to the inner side wall of the conical opening 32, and the swinging pipe 3 is driven to swing by gas. Specifically, when the spray head 6 approaches the inner side wall of the conical opening 32, the air injection pressure is increased, the swing pipe 3 is further pushed to swing, otherwise, the pressure on the inner side wall of the conical opening 32 is relieved, the swing pipe 3 swings to a far point and returns by means of gravity, and the swing pipe swings back and forth in a reciprocating periodic manner. Because the swinging direction of the bottom end of the swinging pipe 3 is consistent with the trend of the mixing tank, solid alkaline particles can be uniformly scattered in the mixing tank and decomposed in a flowing high-temperature ferrous chloride solution to improve the pH value of the solution.

Example 2

As shown in fig. 2 and 3, the other basic technical solutions of embodiment 1 are unchanged, and the horizontal support shaft 4 passes through the middle of the swing pipe 3 to form a support for the swing pipe 3. The deflective support is avoided, so that the swing pipe 3 can not be vertically reset under normal state. Since the horizontal support shaft 4 penetrates the swing pipe 3, the horizontal support shaft 4 located inside the swing pipe 3 can directly connect and support the shower head 6. The complexity of an external supporting component is reduced, and the integrity of the equipment is improved.

In the present embodiment, the buffer portion 2 is constituted by a plate structure 21. The plate structure 21 is a curved plate. The camber center of plate structure 21 all is located mixed space 1's axis department, and plate structure 21 is minor arc structure, and the one end tangent line that is closest to the flow direction is the obtuse angle, avoids depositing water in the bent plate. The uniform curvature center is beneficial to the quick positioning and installation of the plate structure.

Example 3

On the basis that the other basic technical solution of embodiment 1 remains unchanged, the mixing space 1 is a mixing tube. Solid alkaline particles are introduced through the inlet section of the mixing tube. Adopt the body structure can avoid mixing the in-process impurity that dopes.

The foregoing shows and describes the general principles, principal features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and such changes and modifications are intended to be within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A particulate dissolving apparatus, comprising:

the mixing tank is a space for accommodating the particles and dissolving the particles to form a solution;

a buffer part (2) arranged in the mixing tank and used for guiding and buffering the solution and improving the path and time length of dissolved particles; the buffer part (2) comprises a plate structure (21) in the form of a straight plate, at least one end of the plate structure (21) is mounted on and supported by the side wall of the mixing tank; the plate structures (21) are arranged in a staggered mode, and the plate structures (21) on the opposite side walls are perpendicular to each other, so that the solution flowing path is tortuous;

a gas impact swing feeder having a swing pipe (3) disposed above the mixing tank; the side part of the swing pipe (3) is provided with a through hole; a horizontal support shaft (4) penetrates through the through hole to movably support the swing pipe (3); the lower part of the swing pipe (3) is communicated with a mixing tank and is used for scattering solid alkaline particles to the mixing tank; the upper part of the swinging pipe (3) is provided with a conical opening (32); an L-shaped feeding pipe (5) is arranged in the conical opening (32), and a spray head (6) is arranged at the tail end of the feeding pipe (5); the feeding pipe (5) and the conical opening (32) are independent.