Desalting treatment device for hydroximic acid salt-containing mother liquor

Abstract

The utility model relates to the technical field of chemical waste liquid treatment devices, in particular to a desalting treatment device for hydroximic acid salt-containing mother liquor, which comprises a reaction treatment barrel, a plurality of static mixing plates are sequentially and fixedly mounted on the inner wall of the reaction treatment barrel from top to bottom, and a static mixing pipe is arranged at the top of the reaction treatment barrel. The static mixing pipe comprises a plurality of inclined flow pipes which are communicated with one another, the inclined flow pipes are arranged in an upward inclined manner, vertical pipes are fixedly mounted at the liquid outlet ends of the inclined flow pipes, are fixedly mounted on the reaction treatment barrel and are communicated with the interior of the reaction treatment barrel, and a plurality of liquid inlet pipes are fixedly mounted at the liquid inlet ends of the inclined flow pipes and are communicated with the interior of the reaction treatment barrel; a plurality of static spiral mixing blades are fixedly mounted on the inner wall of the inclined flow pipe and are spiral. The device has a static mixing effect, avoids the waste of electric energy, and also eliminates the problem of loss caused by long-term soaking of a stirring part in mother liquor.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical waste liquid treatment devices, specifically, to a desalination treatment device for hydroxamic acid salt-containing mother liquor. Background Technology

[0002] In chemical production processes, especially those involving hydroxamic acid compounds such as metal extractant preparation and organic synthesis, large quantities of hydroxamic acid-containing mother liquor are generated. This mother liquor contains hydroxamic acid, various soluble salts, and potentially small amounts of unreacted raw materials and byproducts. Direct discharge would not only cause severe environmental pollution but also lead to resource waste; if it is directly recycled without effective desalination, the salt content will affect the quality of subsequent products and the stability of the production process.

[0003] Currently, the main desalination methods for hydroxamic acid-containing mother liquor include evaporation crystallization, ion exchange, and membrane separation. Evaporation crystallization involves heating and evaporating the solvent in the mother liquor to crystallize out the salt. However, this method is energy-intensive, and hydroxamic acid is prone to decomposition or polymerization at high temperatures, leading to the loss of effective components. Ion exchange uses ion exchange resins to remove salt from the mother liquor. However, ion exchange resins have limited exchange capacity, requiring frequent regeneration, and the regeneration process generates a large amount of acidic and alkaline waste liquid, causing secondary pollution. Although membrane separation has the advantages of simple operation and relatively low energy consumption, the membrane material is easily contaminated by organic matter and suspended solids in the mother liquor, resulting in decreased membrane flux, shortened service life, and increased maintenance costs.

[0004] To save costs and facilitate the treatment of saline mother liquor, chemical treatment technology is commonly used. This technology involves introducing the saline mother liquor into a tank and adding a chemical solution that reacts with the salts in the mother liquor, thus achieving desalination through a chemical reaction.

[0005] To promote thorough mixing of the mother liquor and the chemical solution, such desalination devices typically include a stirring motor and stirring blades. The stirring motor drives the stirring blades to rotate, achieving the mixing operation. However, this method wastes a significant amount of electrical energy, and the prolonged immersion of the stirring blades in the mother liquor can shorten their lifespan. Therefore, we propose a desalination device for hydroxamic acid-containing mother liquor. Utility Model Content

[0006] The purpose of this invention is to provide a desalination device for hydroxamic acid salt mother liquor, so as to solve the defects mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A desalination device for hydroxamic acid salt-containing mother liquor includes a reaction processing cylinder. Multiple static mixing plates are fixedly installed sequentially from top to bottom on the inner wall of the reaction processing cylinder. A static mixing pipe is provided at the top of the reaction processing cylinder. The static mixing pipe includes multiple interconnected inclined flow pipes, which are arranged at an upward inclination. A vertical pipe is fixedly installed at the outlet end of the inclined flow pipe, and the vertical pipe is fixedly installed on the reaction processing cylinder and communicates with the interior of the reaction processing cylinder. Multiple inlet pipes are fixedly installed at the inlet end of the inclined flow pipe. Multiple static spiral mixing blades are fixedly installed on the inner wall of the inclined flow pipe, and the static spiral mixing blades are spiral-shaped.

[0009] Preferably, the lower projections of the end plates of two adjacent static mixing plates coincide, and the cross-section of the static mixing plate is arc-shaped;

[0010] This setting allows the medicine to drip onto the static mixing plate, improving the static mixing effect.

[0011] Preferably, the static mixing plate at the top is located directly below the vertical pipe, and the inclined flow pipe is set at an upward inclination of 30° to 60°;

[0012] This setting allows the concentrate to flow more smoothly down the inclined flow tube, avoiding dead zones in the flow.

[0013] Preferably, a flange is fixedly installed at the end of the inlet pipe, one inlet pipe is used for the introduction of hydroxamic acid salt mother liquor, and the remaining inlet pipe is used for the introduction of treatment solution.

[0014] Preferably, the surface of the static spiral mixing blade is provided with an arc-shaped guide surface, and two adjacent static spiral mixing blades are perpendicular to each other;

[0015] This setting allows the stock solution to be mixed more thoroughly after passing through the static spiral mixing blades.

[0016] Preferably, a water inlet flushing pipe is fixedly installed on the top cylinder of the reaction processing cylinder, and multiple high-pressure nozzles are fixedly installed at the bottom of the end of the water inlet flushing pipe located inside the reaction processing cylinder.

[0017] This setting allows for high-pressure flushing when needed.

[0018] Preferably, a conical cylinder is fixedly installed at the bottom end of the reaction processing cylinder, a drain pipe is fixedly installed at the bottom end of the conical cylinder, and a drain valve is fixedly installed on the drain pipe.

[0019] Preferably, a waste gas discharge pipe is fixedly installed on the top of the reaction processing cylinder, and a plurality of support legs are fixedly installed on the bottom of the reaction processing cylinder, with a fixed base fixedly installed at the bottom end of each support leg.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This invention achieves efficient, non-powered mixing of hydroxamic acid salt mother liquor and the treatment solution by setting multiple static mixing plates inside the reaction processing cylinder, with adjacent static mixing plates having overlapping end plates and arc-shaped cross-sections, and installing static spiral mixing blades inside the inclined flow tube of the static mixing tube. The blade surfaces are equipped with arc-shaped guide surfaces, and adjacent blades are perpendicular to each other. The static mixing structure replaces the traditional stirring motor and blades, avoiding energy waste and eliminating the wear and tear caused by the stirring components being immersed in the mother liquor for a long time. This reduces equipment operating and maintenance costs, and also improves mixing effect and desalination efficiency.

[0022] 2. This utility model designs the static mixing tube as multiple interconnected inclined flow tubes, with the inclined flow tubes set upwards. Combined with the vertical tube and the liquid inlet tube, the mother liquor and the drug solution can flow smoothly and without dead angles and be initially mixed under the guidance of gravity and the pipeline structure. Then, combined with the static mixing plate in the reaction treatment cylinder, the mixing is further mixed, ensuring the continuity and efficiency of the mixing process, and laying the foundation for the full progress of the subsequent desalination reaction.

[0023] 3. This utility model, by setting a water inlet flushing pipe and a high-pressure nozzle at the top of the reaction treatment cylinder, allows for high-pressure flushing of the inside of the cylinder after desalination or when the equipment needs cleaning. This effectively removes residual mother liquor, reagents, and reaction products, keeping the inside of the equipment clean and preventing impurities from affecting subsequent treatment effects. The conical cylinder, drain pipe, and drain valve at the bottom facilitate the centralized discharge of sediment and waste liquid. The exhaust pipe can promptly discharge the waste gas generated during the reaction process, while the support legs and fixed base ensure stable installation of the equipment, making the entire desalination process more environmentally friendly, safe, and stable. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the static mixing tube of this utility model;

[0026] Figure 3 This is a partial structural schematic diagram of the present invention;

[0027] The meanings of the labels in the diagram are as follows:

[0028] 1. Reaction processing cylinder; 10. Conical cylinder; 11. Sewage pipe; 12. Sewage valve; 13. Support leg; 131. Fixed base; 14. Exhaust gas discharge pipe; 15. Static mixing plate;

[0029] 2. Static mixing tube; 20. Inclined flow tube; 21. Vertical tube; 22. Inlet pipe; 23. Flange; 24. Static spiral mixing blade; 241. Arc-shaped guide surface;

[0030] 3. Water inlet flushing pipe; 30. High-pressure nozzle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-3 This utility model provides a technical solution: a desalination treatment device for hydroxamic acid salt-containing mother liquor, including a reaction treatment cylinder 1. Multiple static mixing plates 15 are fixedly installed on the inner wall of the reaction treatment cylinder 1 from top to bottom. The lower projections of the end plates of two adjacent static mixing plates 15 overlap. The cross-section of the static mixing plate 15 is arc-shaped, so that the liquid flowing down from above can fully drip onto the static mixing plate 15. The static mixing plate 15 changes the flow direction and speed of the liquid and mother liquor, promoting full mixing of the two. No additional power is required, which improves the mixing efficiency, reduces energy consumption, and avoids the problem of wear and tear on the stirring components.

[0033] In this embodiment, a static mixing tube 2 is provided at the top of the reaction processing cylinder 1. The static mixing tube 2 includes multiple inclined flow tubes 20 that are interconnected. The inclined flow tubes 20 are inclined upwards. A vertical tube 21 is fixedly installed at the liquid outlet end of the inclined flow tube 20. The vertical tube 21 is fixedly installed on the reaction processing cylinder 1 and connected to the interior of the reaction processing cylinder 1. Multiple liquid inlet tubes 22 are fixedly installed at the liquid inlet end of the inclined flow tube 20. Multiple static spiral mixing blades 24 are fixedly installed on the inner wall of the inclined flow tube 20. The static spiral mixing blades 24 are spiral in shape. The uppermost static mixing plate 15 is located directly below the vertical tube 21. The inclined flow tube 20 is inclined upwards at 30°~60°, so that the hydroxamic acid salt mother liquor and the treatment solution can flow more smoothly downwards in the inclined flow tube 20 under the action of gravity, avoiding dead flow corners. This ensures that the mother liquor and the treatment solution are initially uniformly mixed before entering the reaction processing cylinder 1, creating good conditions for the subsequent full reaction in the reaction processing cylinder 1.

[0034] like Figure 2 As shown, a flange 23 is fixedly installed at the end of the inlet pipe 22 to facilitate the connection and disassembly of the inlet pipe 22 with the external conveying pipeline, and to facilitate the installation, maintenance and repair of the equipment; one inlet pipe 22 is used for the introduction of hydroxamic acid salt mother liquor, and the remaining inlet pipe 22 is used for the introduction of the treatment solution, so that the mother liquor and the treatment solution can enter the static mixing pipe 2 in an orderly manner, ensuring the standardization and stability of the mixing process.

[0035] like Figure 3 As shown, an arc-shaped guide surface 241 is provided on the surface of the static spiral mixing blade 24. The two adjacent static spiral mixing blades 24 are perpendicular to each other, so that the mother liquor and the drug liquor entering the inclined flow tube 20 change the flow direction and speed multiple times when flowing through the static spiral mixing blade 24, thereby enhancing the degree of turbulence, achieving more thorough mixing, and improving the efficiency and effect of the desalination reaction.

[0036] like Figure 1 As shown, a water inlet flushing pipe 3 is fixedly installed on the top cylinder of the reaction treatment cylinder 1. Multiple high-pressure nozzles 30 are fixedly installed at the bottom of the end of the water inlet flushing pipe 3 located inside the reaction treatment cylinder 1. After the desalination treatment is completed or when the equipment needs to be cleaned, high-pressure water can be introduced through the water inlet flushing pipe 3 and sprayed out through the high-pressure nozzles 30 to thoroughly and efficiently flush the inside of the reaction treatment cylinder 1, effectively removing residual mother liquor, chemical solution and reaction products, keeping the inside of the equipment clean, and reducing the impact of impurities on subsequent treatment.

[0037] like Figure 1 As shown, a conical cylinder 10 is fixedly installed at the bottom of the reaction processing cylinder 1, and a drain pipe 11 is fixedly installed at the bottom of the conical cylinder 10. A drain valve 12 is fixedly installed on the drain pipe 11. Utilizing the structural characteristics of the conical cylinder 10, the precipitate and waste liquid in the reaction processing cylinder 1 can be smoothly collected at the bottom. By opening the drain valve 12, the waste liquid is discharged through the drain pipe 11, which facilitates the cleaning and maintenance of the equipment and ensures the continuous and stable operation of the equipment.

[0038] like Figure 1 As shown, a waste gas discharge pipe 14 is fixedly installed on the top of the reaction treatment cylinder 1. The waste gas discharge pipe 14 leads to an external waste gas treatment device to discharge the waste gas generated during the desalination reaction in a timely manner, maintain the stable gas environment inside the reaction treatment cylinder 1, avoid the accumulation of waste gas and interference with the reaction, and ensure the safety of the working environment of the operators. Multiple support legs 13 are fixedly installed at the bottom of the reaction treatment cylinder 1. A fixed base 131 is fixedly installed at the bottom end of the support legs 13 to provide stable support for the reaction treatment cylinder 1, ensure that the equipment remains stable during operation, and prevent the desalination treatment effect from being affected by shaking.

[0039] In use, the desalination treatment device for hydroxamic acid salt mother liquor of this utility model first connects the external conveying pipe to the inlet pipe 22 through the flange 23 at the end of the inlet pipe 22. One inlet pipe 22 is filled with hydroxamic acid salt mother liquor, and the other inlet pipes 22 are filled with treatment solution. The mother liquor and the treatment solution flow downward in the inclined flow pipe 20 under the action of gravity. During this process, the static spiral mixing blade 24 uses the arc-shaped guide surface 241 to change the direction and speed of the fluid multiple times to achieve preliminary mixing.

[0040] The mixture flows into the reaction processing cylinder 1 through the vertical pipe 21 and drips onto the uppermost static mixing plate 15. It then flows between multiple static mixing plates 15, and by taking advantage of their arc-shaped cross-section and overlapping design, the flow state is continuously changed, and the mixture is further fully mixed.

[0041] The mixed liquid enters the reaction processing cylinder 1 for reaction. After the reaction is completed, the drain valve 12 is opened, and the precipitate and waste liquid are discharged through the drain pipe 11 using the guiding effect of the conical cylinder 10. If equipment cleaning is required, high-pressure water is introduced through the water inlet flushing pipe 3 and flushed inside the reaction processing cylinder 1 through the high-pressure nozzle 30. The waste gas generated during the reaction is transported to external waste gas treatment equipment through the waste gas discharge pipe 14.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A desalination device for hydroxamic acid-containing mother liquor, comprising a reaction processing cylinder (1), characterized in that: Multiple static mixing plates (15) are fixedly installed on the inner wall of the reaction processing cylinder (1) from top to bottom. A static mixing pipe (2) is provided at the top of the reaction processing cylinder (1). The static mixing pipe (2) includes multiple inclined flow pipes (20) that are interconnected with each other. The inclined flow pipes (20) are inclined upwards. A vertical pipe (21) is fixedly installed at the liquid outlet end of the inclined flow pipe (20). The vertical pipe (21) is fixedly installed on the reaction processing cylinder (1) and connected to the interior of the reaction processing cylinder (1). Multiple liquid inlet pipes (22) are fixedly installed at the liquid inlet end of the inclined flow pipe (20). Multiple static spiral mixing blades (24) are fixedly installed on the inner wall of the inclined flow pipe (20). The static spiral mixing blades (24) are spiral in shape.

2. The desalination device for hydroxamic acid-containing mother liquor according to claim 1, characterized in that: The lower projections of the end plates of two adjacent static mixing plates (15) overlap, and the cross section of the static mixing plate (15) is arc-shaped.

3. The desalination device for hydroxamic acid-containing mother liquor according to claim 1, characterized in that: The static mixing plate (15) located at the top is directly below the vertical pipe (21), and the inclined flow pipe (20) is set at an upward inclination of 30°~60°.

4. The desalination device for hydroxamic acid salt-containing mother liquor according to claim 1, characterized in that: A flange (23) is fixedly installed at the end of the inlet pipe (22). One inlet pipe (22) is used for the introduction of hydroxamic acid salt mother liquor, and the remaining inlet pipe (22) is used for the introduction of treatment liquid.

5. The desalination device for hydroxamic acid-containing mother liquor according to claim 1, characterized in that: The surface of the static spiral mixing blade (24) is provided with an arc-shaped guide surface (241), and two adjacent static spiral mixing blades (24) are perpendicular to each other.

6. The desalination device for hydroxamic acid salt-containing mother liquor according to claim 1, characterized in that: A water inlet flushing pipe (3) is fixedly installed on the top cylinder of the reaction processing cylinder (1), and multiple high-pressure nozzles (30) are fixedly installed at the bottom of the end pipe of the water inlet flushing pipe (3) located inside the reaction processing cylinder (1).

7. The desalination device for hydroxamic acid salt-containing mother liquor according to claim 1, characterized in that: A conical cylinder (10) is fixedly installed at the bottom end of the reaction processing cylinder (1), and a drain pipe (11) is fixedly installed at the bottom end of the conical cylinder (10). A drain valve (12) is fixedly installed on the drain pipe (11).

8. The desalination device for hydroxamic acid salt-containing mother liquor according to claim 1, characterized in that: The top of the reaction processing cylinder (1) is fixedly installed with a waste gas discharge pipe (14), and the bottom of the reaction processing cylinder (1) is fixedly installed with multiple support legs (13), and the bottom end of the support legs (13) is fixedly installed with a fixed base (131).

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