Metal dissolving reactor provided with multiple groups of gas-liquid premixing parts

Abstract

The utility model discloses a metal dissolving reactor equipped with a plurality of groups of gas-liquid premixing parts, which comprises a liquid storage part at the bottom, a dissolving part equipped on the liquid storage part, and a plurality of groups of gas-liquid premixing parts equipped in a preset area, each group of premixing part comprises a liquid injection port communicated with fluid of the bottom liquid storage part and a gas injection port for injecting air, a liquid phase and a gas phase pumped by the liquid injection port and the gas injection port can be premixed by a premixing unit in each group of premixing part, and the liquid phase and the gas phase are guided to the bottom of the dissolving part by a guide pipe connected with the premixing unit; and the plurality of groups of premixing parts can be uniformly arranged in a limited space, so that the subsequent dissolution reaction rate is increased to the maximum extent.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering technology and related equipment, and relates to a metal dissolution reactor equipped with multiple groups of gas-liquid premixing parts. Background Art

[0002] With the development of various types of technologies, the application of non-ferrous metals is becoming more and more extensive. In the automotive industry, with the increasing popularity and promotion of new energy vehicles, integrated batteries with higher power integration have also become a development trend pursued by major manufacturers. Among them, the refinement represented by copper can obtain reliable electrode materials; in the field of medical device technology, brackets and joints made of new materials such as titanium materials and platinum materials can be used as high-reliability auxiliary treatment equipment; in the aerospace field, related electronic products or connectors, etc.; these technologies are inseparable from the preparation of high-purity non-ferrous metals.

[0003] By recycling discarded parts or profiles, a high-purity solution containing relevant metal ions is obtained through efficient dissolution, and then a high-purity non-ferrous metal material can be obtained through the action of redox reaction. In the industrial production process, it is very necessary to promote the dissolution reaction of raw materials from upstream such as Cu rods, wires, sheets, and particles in H2SO4 to obtain a high-purity solution of Cu ions. In the early days, an immersion reaction scheme was mostly used. This scheme soaked various collected materials to be dissolved in a dissolving reagent such as sulfuric acid, and a mechanical stirring device was configured in the device to obtain the final salt solution. This equipment has low efficiency and the reactor volume required for the equipment is also very large. It has not been widely promoted and applied in large-scale batch production. A subsequent bubbling dissolution equipment design was proposed, which can blow air into the dissolution reaction process to achieve more addition of the gas phase. However, for larger equipment in industrial production, it is difficult to obtain a large-scale distribution of the air blown, resulting in a low dissolution reaction rate and may also cause an unstable reaction state similar to boiling, which reduces the reliability of the system. By analyzing the chemical reaction process of the dissolution reaction, taking the Cu dissolution reaction as an example, it is mainly divided into two reaction steps:

[0004] 2Cu+O2=2CuO (1)

[0005] CuO+H2SO4=CuSO4+H2O (2)

[0006] The reaction involves a liquid-phase solvent, a solid-phase solute, and a participating gas phase, which is the most complex gas-liquid-solid three-phase reaction state. Therefore, simply increasing the contact area and mixing degree of any two phases has a relatively limited effect on improving the reaction rate. How to achieve the maximum contact area of the three phases is a design difficulty for efficient dissolution equipment in industrial scenarios.

[0007] In view of this, the present inventors provide a metal dissolution reactor equipped with multiple gas-liquid premixing sections to solve the above technical problems. Utility Model Content

[0008] The purpose of the present utility model is to overcome the shortcomings of the above-mentioned prior art and propose a metal dissolution reactor equipped with multiple groups of gas-liquid premixing sections, wherein the reactor is equipped with multiple groups of gas-liquid premixing sections, and air and a mixed liquid containing a reagent liquid are premixed in the gas-liquid premixing section. The mixture is then diverted toward the bottom of the dissolution section through a connected conduit, and the gas and liquid phases are fully and evenly mixed during the diversion process. The mixture is then output from the bottom of the dissolution section to the dissolution chamber in the dissolution section, and is contacted with the solid phase material to be dissolved therein to dissolve the solid phase material. During the entire process, the gas and liquid phases are premixed to the maximum extent first through the multiple groups of gas-liquid premixing sections, and then an efficient dissolution reaction is completed through the solid phase reaction with the dissolution chamber. The contact surface of the gas-liquid-solid three-phase is increased, and the phenomenon of cavitation can be maximized to accelerate the dissolution reaction speed.

[0009] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0010] The utility model provides a metal dissolution reactor configured with multiple groups of gas-liquid premixing parts, comprising a liquid storage part at the bottom, a dissolving part arranged thereon, the dissolving part comprising a feeding port that can be opened and closed, and the metal to be dissolved can be received into a dissolving chamber through the feeding port, and further comprising multiple groups of gas-liquid premixing parts arranged in a preset area, each group of premixing parts comprising a liquid injection port connected to the fluid of the bottom liquid storage part and an air injection port for injecting air, the premixing unit in each group of premixing parts can premix the liquid phase and the gas phase pumped into the liquid injection port and the air injection port, and guide the flow toward the bottom of the dissolving part through the conduit connected thereto, and output the flow from the bottom of the dissolving part to the dissolving chamber in the dissolving part.

[0011] Furthermore, at one cross section of the dissolving portion, the hydraulic diameter of the multiple gas-liquid premixing portion configuration areas is 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion.

[0012] Furthermore, the multiple groups of gas-liquid premixing sections include a group of gas-liquid premixing sections located in the center and a group of gas-liquid premixing sections located in the outer ring area.

[0013] Furthermore, at one cross section of the dissolving portion, the hydraulic diameter of the array of gas-liquid premixing portion configuration areas in the outer ring region is 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion.

[0014] Furthermore, at one cross section of the dissolving portion, the multiple groups of gas-liquid premixing portions are located in an annular area of 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion.

[0015] Furthermore, the multiple groups of gas-liquid premixing parts include a first number of gas-liquid premixing parts located in the central area and a second number of gas-liquid premixing parts located in the outer ring area.

[0016] Furthermore, the first number of the gas-liquid premixing parts in the central region is smaller than the second number of the gas-liquid premixing parts in the outer ring region.

[0017] Furthermore, the conduit has an aspect ratio of not less than 3.

[0018] Furthermore, a plurality of communication pipes are arranged between the liquid storage portion and the dissolution chamber.

[0019] Furthermore, the bottom of the dissolution chamber comprises a homogeneous portion communicated with the conduit, and the homogeneous portion comprises a homogeneous member with a preset porosity.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The utility model is a metal dissolution reactor equipped with multiple groups of gas-liquid premixing sections, which include multiple groups of gas-liquid premixing sections arranged at preset positions. The liquid injection port and the gas injection port connected thereto can achieve the effect of premixing the gas-liquid two phases during the period, and the premixed two phases are fully developed and guided to the bottom of the liquid storage section through the conduit connected thereto, and are distributed into the dissolution chamber through the homogeneous part with a preset porosity configured in the homogeneous section, thereby performing the dissolution reaction efficiently and quickly.

[0022] 2. The utility model is a metal dissolution reactor configured with multiple groups of gas-liquid premixing sections. At one cross-section of the dissolution section, the hydraulic diameter of the configuration area of the multiple groups of gas-liquid premixing sections is 1 / 2-3 / 4 of the hydraulic diameter of the dissolution section, ensuring that the multiple groups of premixing sections can be evenly configured in a confined space, so that the subsequent dissolution reaction rate is maximized. The multiple groups of premixing sections can be configured in the central area and / or the outer ring area, and the reaction rates of all areas in the reactor can be ensured to be close to each other under the premise of flexible and effective space utilization.

[0023] 3. The utility model is a metal dissolution reactor equipped with multiple gas-liquid premixing sections. The conduits have a preset aspect ratio, which can ensure that the reactor fully premixes the gas and liquid phases. The bottom of the dissolution chamber includes a homogeneous phase section connected to the conduits and has a preset porosity therein, so that the gas and liquid phases output by the gas-liquid premixing section can be premixed and output more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are incorporated into and constitute a part of this specification and, together with the description, are used to explain the principles of the present invention.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic diagram of the configuration of a metal dissolution reactor system with multiple gas-liquid premixing units provided by the present invention;

[0027] Figure 2 This is a schematic diagram of another configuration of a metal dissolution reactor system with multiple gas-liquid premixing units according to the present invention;

[0028] Figure 3 This is a schematic diagram of another configuration of a metal dissolution reactor system with multiple gas-liquid premixing units according to the present invention;

[0029] Figure 4 This is a diagram of the first configuration of multiple gas-liquid premixing parts at a cross section of the present invention;

[0030] Figure 5 This is a diagram of the second configuration of multiple gas-liquid premixing parts at a cross section of the present invention;

[0031] Figure 6 This is a diagram of the third configuration of multiple gas-liquid premixing parts at one cross section of the present invention. DETAILED DESCRIPTION

[0032] Here, exemplary embodiments will be described in detail, and the embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of devices consistent with some aspects of the present invention as detailed in the appended claims.

[0033] See also Figures 1 to 6As shown, the utility model provides a metal dissolution reactor with multiple gas-liquid premixing parts, comprising a rotator structure configured to include a dissolution chamber, the rotator can be cylindrical, cubic, etc., the dissolution chamber has a preset volume, a homogeneous portion is arranged at its bottom, the upper portion of the homogeneous portion can be configured as a mesh structure, so that it can also accommodate dissolved metal, the top of the dissolution chamber can be openably configured with a feeding port, the recovered metal can be fed into the dissolution chamber through the feeding port, and multiple gas-liquid premixing parts are further arranged in the upper area of the dissolution chamber, the gas-liquid premixing parts here are arranged in the preset area, at one cross section of the dissolution portion, the multiple gas-liquid premixing parts The hydraulic diameter of the mixing section is 1 / 2-3 / 4 of the hydraulic diameter of the dissolving section. The multiple groups of gas-liquid premixing sections are arranged in a larger area where the dissolving section is larger than the central area, so that the multiple groups of premixing sections can perform gas-liquid premixing operations in parallel and quickly in a larger area. Here, the gas-liquid premixing section (taking one gas-liquid premixing section 21 as an example) includes a liquid injection port 202 connected to the fluid of the bottom liquid storage section and an air injection port 201 for injecting air. In the gas-liquid premixing section, the gas and liquid phases can be accelerated to be premixed to form an initial two-phase state, and then fully mixed in the conduit 30 connected to its outlet. The conduit 30 is configured to have a preset aspect ratio, for example, not less than 3. The elongated structure with a length-to-diameter ratio enables the gas-liquid two-phase after the initial premixing to fully develop and flow therein, reducing the turbulence and guiding it to the bottom area of the dissolution part through the conduit. Here, the conduit 30 is shown to be connected to the homogeneous part 60 at the bottom. The homogeneous part contains a homogeneous part with a preset porosity. The homogeneous part can be a filler of metal or non-metallic particles or powder, or a preformed object with a preset porosity. In order to ensure the homogeneous effect without making the flow resistance of the homogeneous part too high, the porosity in the homogeneous part is configured to be in the range of 35%-85%. More preferably, the porosity of the homogeneous part is medium, configured to be 45%- 65%, thereby enabling the fully developed two-phase premix to be more evenly distributed over a wider area of the dissolution section, and preventing excessive resistance from pre-separating the two phases, which would otherwise result in a lower final reaction rate. After passing through the homogeneous section, the two phases are output from the bottom of the dissolution section into the dissolution chamber within the dissolution section. Here, a bubble-rich premix, similar to soda, is output into the dissolution chamber. Microbubbles can adhere to the surface of the metal to be dissolved in the dissolution chamber. This not only increases the contact area between the three phases, but also prevents cavitation caused by the collapse of microbubbles on the solid surface, thereby accelerating the dissolution reaction. A liquid reservoir 80 is also disposed at the bottom of the dissolution chamber. The liquid reservoir 80 can be fluidically connected to the dissolution section, with the homogeneous section 60 disposed therebetween providing support to prevent the solid-phase material to be dissolved from passing through the homogeneous section 60 and into the liquid reservoir 80. Alternatively, the liquid reservoir 80 and the dissolution section can be disposed independently.Here, in order to ensure that the reagents in the liquid storage section 80 and the dissolution section can be mixed more evenly and to ensure the highest dissolution efficiency, several connecting pipes 40 are also configured between the liquid storage section 80 and the dissolution chamber. The injection ports of multiple groups of gas-liquid premixing sections are connected to the same drive pump 51 by connecting pipes. In this way, the liquid phase drive of multiple groups of gas-liquid premixing sections can be basically the same, eliminating the difference in liquid supply between different injection ports. In this embodiment, a gas-liquid separator 70 is also configured on the top of the dissolution section to ensure that the entire system can efficiently separate the generated liquid and maintain the pressure fluctuations in the system within a small range.

[0034] See also Figures 1 to 3 As shown, Figure 1 and Figure 2 The difference lies in the difference in the number and distribution area of the multiple gas-liquid premixing parts. Figure 1 At one cross section of the dissolving portion, the multiple gas-liquid premixing portions are located in an annular region of 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion, that is, the multiple gas-liquid premixing portions (shown as 21 and 22 in the figure) are only arranged in the outer annular region, and Figure 2 The multiple groups of gas-liquid premixing parts include a group of gas-liquid premixing parts 11 located in the center and an array of gas-liquid premixing parts (shown as 21, 21) located in the outer ring area. Figure 3 and Figure 2 The difference lies in the gas drive of the gas injection port, Figure 3 The gas injection ports in the system are connected to the same air pump or compressor, so that the operation of the equipment is not affected by the region, and the gas-liquid ratio of each premixing part can be adjusted more accurately to make the system dissolution efficiency higher.

[0035] Figure 4-Figure 6 This is a diagram showing different types of configurations of multiple gas-liquid premixing parts at a cross section. Figure 4 The gas-liquid premixing section is only arranged in the outer ring area, which can be marked as 21, 22...2N. Of course, in order to ensure the uniform distribution of gas and liquid phases, at one cross section of the dissolving section, the multiple gas-liquid premixing sections are located in the annular area of 1 / 2-3 / 4 of the hydraulic diameter of the dissolving section. In order to further increase the gas-liquid mixing efficiency, Figure 5The multiple groups of gas-liquid premixing sections include a group of gas-liquid premixing sections 11 located in the center and an array of gas-liquid premixing sections 21, 22...2N located in the outer ring area. Of course, further, the multiple groups of gas-liquid premixing sections include a first number of gas-liquid premixing sections 11, 12...1M located in the central area and a second number of gas-liquid premixing sections 21, 22...2N located in the outer ring area. Here, in order to ensure the tightness of the system, the first number M is less than the second number N. Of course, in some cases N is not less than M+3 and not more than 12. In this way, the number of premixing sections in the outer ring area is not too many, and the spacing angle between each group of premixing sections in the outer ring area is not less than 30°. In this way, the system operation is more reliable and the gas fusion in the two-phase state does not occur, causing instability in the system operation.

[0036] The above description is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0037] It should be understood that the present invention is not limited to the above description and that various modifications and changes can be made without departing from the scope of the present invention. The scope of the present invention is limited only by the appended claims.

Claims

1. A metal dissolution reactor equipped with multiple gas-liquid premixing units, characterized in that: It includes a liquid storage part at the bottom and a dissolving part arranged thereon, wherein the dissolving part includes a feeding port that can be opened and closed, and can receive the metal to be dissolved into the dissolving chamber through the feeding port. It also includes multiple groups of gas-liquid premixing parts arranged in a preset area, each group of premixing parts includes a liquid injection port connected to the fluid of the bottom liquid storage part and an air injection port for injecting air, and the premixing unit in each group of premixing parts can premix the liquid phase and the gas phase pumped into the liquid injection port and the air injection port, and the conduit connected to it is used to guide the liquid toward the bottom of the dissolving part and output it from the bottom of the dissolving part to the dissolving chamber in the dissolving part.

2. The metal dissolution reactor configured with multiple gas-liquid premixing units according to claim 1, characterized in that: At one cross section of the dissolving portion, the hydraulic diameter of the multiple gas-liquid premixing portion configuration area is 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion.

3. The metal dissolution reactor configured with multiple gas-liquid premixing units according to claim 1, characterized in that: The multiple groups of gas-liquid premixing parts include a group of gas-liquid premixing parts located in the center and a group of gas-liquid premixing parts located in the outer ring area.

4. The metal dissolution reactor configured with multiple gas-liquid premixing units according to claim 1, characterized in that: At one cross section of the dissolving portion, the hydraulic diameter of the array of gas-liquid premixing portion configuration areas in the outer ring region is 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion.

5. The metal dissolution reactor equipped with multiple gas-liquid premixing units according to claim 1, characterized in that: At one cross section of the dissolving portion, the multiple groups of gas-liquid premixing portions are located in an annular area of 1 / 2-3 / 4 of the hydraulic diameter of the dissolving portion.

6. The metal dissolution reactor equipped with multiple gas-liquid premixing units according to claim 1, characterized in that: The multiple groups of gas-liquid premixing parts include a first number of gas-liquid premixing parts located in the central area and a second number of gas-liquid premixing parts located in the outer ring area.

7. The metal dissolution reactor equipped with multiple gas-liquid premixing units according to claim 6, characterized in that: The first number of the gas-liquid premixing parts in the central region is smaller than the second number of the gas-liquid premixing parts in the outer annular region.

8. The metal dissolution reactor equipped with multiple gas-liquid premixing units according to claim 1, characterized in that: The conduit has an aspect ratio of not less than 3.

9. The metal dissolution reactor equipped with multiple gas-liquid premixing units according to claim 1, wherein: A plurality of communication pipes are further arranged between the liquid storage portion and the dissolution chamber.

10. The metal dissolution reactor equipped with multiple gas-liquid premixing units according to claim 1, characterized in that: The bottom of the dissolution chamber comprises a homogeneous portion communicated with the conduit, and the homogeneous portion comprises a homogeneous member with a preset porosity.

Images