Continuous acidification device

Abstract

The utility model relates to the technical field of acidification, and discloses a continuous acidification device which comprises a plurality of acidification assemblies and acid storage assemblies which are sequentially arranged, each acidification assembly comprises an acidification kettle, a circulating pump, a valve and a PH sensor arranged between the circulating pump and the valve which are sequentially communicated, the valve is provided with a liquid inlet communicated with the liquid outlet end of the circulating pump, a reflux inlet communicated with the acidification kettle and a liquid outlet communicated with the acidification kettle in the next acidification assembly, and the valve can control the liquid inlet to be communicated with the reflux inlet or the liquid outlet; the acid storage assembly is provided with an acid storage cavity, and the liquid outlet end of the acid storage assembly is communicated with each acidification kettle. The continuous acidification device disclosed by the utility model can be used for quickly acidifying materials.

Description

Technical Field

[0001] The utility model relates to the technical field of acidification, in particular to a continuous acidification device. Background Art

[0002] During the production process of 2-amino-3,6,8-naphthalenetrisulfonic acid (K acid), the deaminated material needs to be acidified, and the pH value of the acidified material is 1.

[0003] At present, the acidification of materials is generally achieved through an acidification kettle, using an acidification kettle similar to that in announcement number CN210875317U. The acidification kettle includes a kettle body, a feed port is provided on the top of the kettle body, a motor is provided on the top of the kettle body, a stirring shaft is provided in the kettle body, one end of the stirring shaft is placed in the kettle body, and the other end is connected to the motor on the top of the kettle body; the stirring shaft placed in the kettle body is symmetrically provided with a first stirring rod, a second stirring rod and a third stirring rod from top to bottom; the bottom of the stirring shaft placed in the kettle body is also provided with a stirring blade; the stirring shaft, the first stirring rod, the second stirring rod and the third stirring rod are all provided with through holes; the bottom of the kettle body is provided with a discharge port, and the bottom of the kettle body is also provided with support legs.

[0004] When the material is acidified by the acidification kettle, the material is passed into the acidification kettle, and then sulfuric acid is added dropwise while stirring. After stirring for a period of time, the pH value in the acidification kettle is repeatedly tested until the pH value stabilizes, and the acidified material is discharged. In the process of adding acid to the acidification kettle, the acid and the material mix and release heat. In order to control the temperature of the acidification kettle, the speed of acid addition needs to be controlled, resulting in a slower acidification speed. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a continuous acidification device to solve the technical problem in the prior art that the acid addition speed is limited, resulting in a slow acidification speed.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0007] The utility model provides a continuous acidification device, comprising:

[0008] A plurality of acidification assemblies arranged in sequence, each of the acidification assemblies comprising an acidification kettle, a circulation pump, a valve, and a pH sensor arranged between the circulation pump and the valve, the valve having a liquid inlet connected to the liquid outlet of the circulation pump, a reflux port connected to the acidification kettle, and a liquid discharge port connected to the acidification kettle in the next acidification assembly, the valve being capable of controlling the liquid inlet to be connected to the reflux port or the liquid discharge port; and

[0009] The acid storage component has an acid storage cavity, and the liquid outlet end of the acid storage component is connected with each of the acidification kettles.

[0010] In one embodiment, the acidification component further includes a stirring component, which is disposed in the acidification kettle and is used to stir the solution in the acidification kettle.

[0011] In one embodiment, the stirring assembly includes a driving motor and a stirring paddle, wherein the driving motor is disposed in the acidification kettle, and the stirring paddle is built into the acidification kettle and connected to an output shaft of the driving motor.

[0012] In one embodiment, the acidification assembly further includes an exhaust valve, and an air inlet end of the exhaust valve is connected to the top of the acidification kettle.

[0013] In one embodiment, the acidification assembly further includes a cooling element, which is connected to the acidification kettle and is used to cool the acidification kettle.

[0014] In one embodiment, the cooling member includes a first cooling pipe, which is spiral and arranged around the acidification kettle.

[0015] In one embodiment, the cooling member further includes a second cooling pipe, which is spiral and arranged around the acidification kettle.

[0016] In one embodiment, the second cooling pipe is disposed below the first cooling pipe, and the length of the second cooling pipe is shorter than that of the first cooling pipe.

[0017] In one embodiment, the acid storage assembly includes an acid storage tank, the acid storage cavity is formed in the acid storage tank, and the acid storage tank is connected to each of the acidification kettles.

[0018] In one embodiment, the acid storage assembly further includes a plurality of metering pumps, which are arranged in a one-to-one correspondence with the acidification kettle, and the liquid inlet end of the metering pump is connected to the acid storage tank, and the liquid outlet end is connected to the acidification kettle.

[0019] Compared with the prior art, the continuous acidification device provided by the present invention continuously passes the material into the acidification kettle of the first acidification component, and passes acid liquid into the acidification kettle through the acid storage component to perform preliminary acidification on the material. When the pH value of the material measured by the pH sensor is greater than the set value, the valve controls the liquid inlet to be connected to the reflux port, and the material is continuously acidified until the pH value of the material reaches the preset value. At this time, the valve controls the liquid inlet to be connected to the discharge port, and the liquid enters the acidification kettle of the next acidification component through the discharge port. The material is gradually acidified in each acidification component to form a continuous production line; the material flows continuously between the acidification kettles and is continuously acidified until the final required pH value is reached.

[0020] Among them, since the material is gradient acidified through multiple acid storage kettles, the pH value required to be lowered for each acidification is small, the amount of acid liquid required to be added is small, and the heat released by the mixing of the acid liquids is small, so the staged acidification of the acid liquid can be completed quickly. The heat released during the mixing of the acid liquids can also be released in multiple acidification kettles, which can quickly release heat and accelerate the acidification speed of the material. At the same time, the material is staged through multiple acidification kettles, and the material is quickly acidified in each stage, which can achieve continuous acidification of the material. By setting a circulation pump, a valve and a pH sensor, it can be ensured that the material enters the next stage or is discharged when it is acidified to a preset pH value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a continuous acidification device provided by an embodiment of the present utility model;

[0022] Figure 2 This is a structural diagram of an acidification kettle and a stirring assembly in a continuous acidification device provided by an embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of a stirring assembly in a continuous acidification device provided by an embodiment of the present invention;

[0024] Figure 4 yes Figure 3 A local enlarged schematic diagram of point A in the middle.

[0025] Description of reference numerals:

[0026] Acidification component 1;

[0027] Acidification kettle 11;

[0028] Circulation pump 12;

[0029] Valve 13;

[0030] pH sensor 14;

[0031] stirring assembly 15;

[0032] Drive motor 151;

[0033] stirring paddle 152;

[0034] Abutment sleeve 153;

[0035] Connecting sleeve 154;

[0036] Connecting block 155;

[0037] Spring ring 156;

[0038] Exhaust valve 16;

[0039] Cooling element 17;

[0040] First cooling pipe 171;

[0041] Second cooling pipe 172;

[0042] Acid storage component 2;

[0043] Acid storage tank 21;

[0044] Metering pump 22. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] In order to solve the technical problem that materials cannot be continuously acidified in the prior art, the utility model provides a continuous acidification device, which can realize continuous acidification of materials.

[0047] It should be noted that the continuous acidifying device in the present invention is used for but not limited to the acidification in the production process of K acid. For the sake of convenience, in the present invention, only the application of the continuous acidifying device to the acidification in the production process of K acid is used as an example for explanation. The principle of applying the continuous acidifying device to other types of materials is essentially the same as the principle of applying it to the acidification in the production process of K acid, and will not be described in detail here.

[0048] See also Figure 1 , Figure 1 This is a structural schematic diagram of a continuous acidification device in an embodiment of the present invention. A continuous acidification device includes multiple acidification components 1 and acid storage components 2 arranged in sequence. The acidification component 1 includes an acidification kettle 11, a circulation pump 12, a valve 13 and a pH sensor 14 arranged between the circulation pump 12 and the valve 13, which are connected in sequence. The valve 13 has a liquid inlet connected to the liquid outlet end of the circulation pump 12, a reflux port connected to the acidification kettle 11 and a liquid discharge port connected to the acidification kettle 11 in the next acidification component 1. The valve 13 can control the liquid inlet to be connected to the reflux port or the liquid discharge port; the acid storage component 2 has an acid storage cavity, and the liquid outlet end of the acid storage component 2 is connected to each acidification kettle 11.

[0049] The material is continuously introduced into the acidification kettle 11 of the first acidification component 1, and acid is introduced into the acidification kettle 11 through the acid storage component 2 to perform preliminary acidification on the material. When the pH value of the material measured by the pH sensor 14 is greater than the set value, the valve 13 controls the liquid inlet to be connected to the reflux port, and the material is continuously acidified until the pH value of the material reaches the preset value. At this time, the valve 13 controls the liquid inlet to be connected to the liquid discharge port, and the material enters the acidification kettle 11 of the next acidification component 1 through the liquid discharge port. The material is gradually acidified in each acidification component 1, forming a continuous production line; the material continuously flows between the acidification kettles 11 and is continuously acidified until the final required pH value is reached.

[0050] Among them, since the material is gradient acidified by multiple acid storage kettles, the pH value required to be lowered for each acidification is small, the amount of acid liquid required to be added is small, and the heat released by the mixing of the acid liquid is small, so the staged acidification of the acid liquid can be completed quickly. The heat released during the mixing of the acid liquid can also be released in the multiple acidification kettles 11, which can quickly release heat and accelerate the acidification speed of the material; at the same time, the material is staged by the multiple acidification kettles 11, and the material is quickly acidified in each stage, which can achieve continuous acidification of the material; by providing a circulation pump 12, a valve 13 and a pH sensor 14, it can be ensured that the material enters the next stage or is discharged when it is acidified to a preset pH value.

[0051] The valve 13 may be a manual valve, or a solenoid valve, or a pneumatic valve. Specifically, in one embodiment, the valve 13 is a solenoid valve, and the solenoid valve and the pH sensor 14 are connected to the same controller (not shown in the figure). The controller receives the pH value of the solution detected by the pH sensor 14 and controls the liquid inlet of the valve 13 to be connected to the reflux port or the discharge port according to the detected pH value.

[0052] like Figure 1 and Figure 3 As shown, in one embodiment, the acidification assembly 1 further includes a stirring assembly 15 . The stirring assembly 15 is disposed in the acidification kettle 11 and is used to stir the solution in the acidification kettle 11 .

[0053] By providing the stirring component 15 , the stirring component 15 can promote rapid mixing of the acid liquid and the material in the acidification kettle 11 .

[0054] It should be understood that the stirring component 15 can be an electric stirring blade, a circulating stirring blade, etc. Figure 3 As shown, in one embodiment, the stirring assembly 15 includes a driving motor 151 and a stirring paddle 152 . The driving motor 151 is disposed in the acidification kettle 11 , and the stirring paddle 152 is built into the acidification kettle 11 and connected to the output shaft of the driving motor 151 .

[0055] When the material needs to be acidified, the driving motor 151 is started, and the driving motor 151 drives the stirring paddle 152 to rotate. The rotating stirring paddle 152 mixes the material and the acid solution in the acidification kettle 11.

[0056] In order to fix the bottom of the rotating stirring blade 152, Figure 4 As shown, in one embodiment, the stirring assembly 15 further includes an abutting sleeve 153, a connecting sleeve 154, a connecting block 155 and a spring ring 156. The abutting sleeve 153 abuts the bottom inner wall of the acidification kettle 11, the connecting sleeve 154 is rotatably sleeved on the rotating shaft of the stirring paddle 152, the connecting block is connected to the abutting sleeve 153 and the connecting sleeve 154, and the spring ring 156 abuts the connecting sleeve 154 and the rotating shaft of the stirring paddle 152.

[0057] When the stirring paddle 152 rotates, the abutment sleeve 153 abuts and fits against the bottom inner wall of the acidification kettle 11, and can provide a limiting force to the rotating shaft of the stirring paddle 152 through the connecting sleeve 154 and the connecting block 155, so as to prevent the stirring paddle 152 from shaking during the rotation process when the end thereof is away from the driving motor 151. The spring ring 156 is used to provide elastic force to drive the conical abutment sleeve 153 to fit against the bottom inner wall of the acidification kettle 11.

[0058] It should be understood that the spring ring 156 can be a disc spring or a spring, etc.

[0059] When the material is acidified in the acidification kettle 11, gas is generated, causing the gas pressure in the acidification kettle 11 to change, resulting in an increase in the gas pressure in the acidification kettle 11. Figure 1 As shown, in one embodiment, the acidification assembly 1 further includes an exhaust valve 16 , and an air inlet end of the exhaust valve 16 is connected to the top of the acidification kettle 11 .

[0060] By providing the exhaust valve 16 , the gas formed by the mixing of the materials can be discharged from the acidification kettle 11 , thereby preventing the gas pressure in the acidification kettle 11 from continuously increasing.

[0061] When the materials are mixed in the acidification kettle 11, heat is released. Figure 2 As shown, in one embodiment, the acidification assembly 1 further includes a cooling member 17 , which is connected to the acidification kettle 11 and is used to cool the acidification kettle 11 .

[0062] By providing the cooling element 17, the cooling element 17 can exchange heat with the acidification kettle 11, absorb the heat released by the acid mixture in the acidification kettle 11, so that the temperature of the material can be controlled within a preset range, and the speed of adding the acid can be accelerated.

[0063] It should be understood that the cooling element 17 can be a cooling coil, a cooling jacket, etc. Specifically, Figure 2As shown, in one embodiment, the cooling member 17 includes a first cooling pipe 171 . The first cooling pipe 171 is spiral and is disposed around the acidification kettle 11 .

[0064] By setting the first cooling pipe 171 and passing the cooling liquid into the first cooling pipe 171, the first cooling pipe contacts the acidification kettle 11 and exchanges heat. The flowing cooling liquid absorbs the heat released by the mixing of the acid solution in the acidification kettle 11, and can cool the solution in the acidification kettle 11.

[0065] like Figure 2 As shown, in one embodiment, the cooling member 17 further includes a second cooling pipe 172 . The second cooling pipe 172 is spiral and is disposed around the acidification kettle 11 .

[0066] By providing a second cooling pipe 172, cooling liquid is passed into the second cooling pipe 172, and the second cooling pipe contacts the acidification kettle 11 and exchanges heat. The flowing cooling liquid absorbs the heat released by the mixing of the acid solution in the acidification kettle 11, and can cool the solution in the acidification kettle 11 together with the first cooling pipe.

[0067] In the acidification kettle 11, new solution is added to the upper part of the acidification kettle 11 and continuously mixed at the lower part, which causes the heat in the acidification kettle 11 to be stratified. In order to balance the uneven heat distribution in the acidification kettle 11, Figure 2 As shown, in one embodiment, the second cooling pipe 172 is disposed below the first cooling pipe 171 , and the length of the second cooling pipe 172 is shorter than that of the first cooling pipe 171 .

[0068] The bottom of the acidification kettle 11 is cooled by the second cooling pipe 172, and the bottom of the acidification kettle 11 is cooled by the first cooling pipe 171. By making the length of the second cooling pipe 172 shorter than that of the first cooling pipe 171, the coolant can flow quickly through the second cooling pipe 172, thereby quickly cooling the bottom of the acidification kettle 11.

[0069] The coolant flowing into the first cooling pipe 171 and the second cooling pipe 172 may be cooling water, glacial acetic acid, or the like.

[0070] It should be understood that the acid storage component 2 can be a cylinder, a tank, etc. for accommodating acid liquid. Specifically, Figure 1 As shown, in one embodiment, the acid storage assembly 2 includes an acid storage tank 21 , an acid storage cavity is formed in the acid storage tank 21 , and the acid storage tank 21 is connected to each acidification kettle 11 .

[0071] By providing the acid storage tank 21 , the acid liquid stored in the acid storage tank 21 can enter each acidification kettle 11 and be mixed with the material in each acidification kettle 11 .

[0072] It should be understood that the acid in the acid storage tank 21 can enter each acidification kettle 11 through a metering cylinder or a flow valve. Specifically, Figure 1 As shown, in one embodiment, the acid storage assembly 2 further includes a plurality of metering pumps 22, and the plurality of metering pumps 22 are arranged in a one-to-one correspondence with the acidification kettle 11, and the liquid inlet end of the metering pump 22 is connected to the acid storage tank 21, and the liquid outlet end is connected to the acidification kettle 11.

[0073] By providing a metering pump 22 , the metering pump 22 can pass the acid solution from the acid storage tank 21 into each acidification kettle 11 to mix with the material for acidification.

[0074] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A continuous acidification device, characterized in that: include: A plurality of acidification assemblies arranged in sequence, each of the acidification assemblies comprising an acidification kettle, a circulation pump, a valve, and a pH sensor arranged between the circulation pump and the valve, the valve having a liquid inlet connected to the liquid outlet of the circulation pump, a reflux port connected to the acidification kettle, and a liquid discharge port connected to the acidification kettle in the next acidification assembly, the valve being capable of controlling the liquid inlet to be connected to the reflux port or the liquid discharge port; and The acid storage component has an acid storage cavity, and the liquid outlet end of the acid storage component is connected with each of the acidification kettles.

2. The continuous acidification device according to claim 1, characterized in that: The acidification component further includes a stirring component, which is arranged in the acidification kettle and is used to stir the solution in the acidification kettle.

3. The continuous acidification device according to claim 2, characterized in that: The stirring assembly includes a driving motor and a stirring paddle. The driving motor is arranged in the acidification kettle. The stirring paddle is built into the acidification kettle and connected to the output shaft of the driving motor.

4. The continuous acidification device according to claim 1, characterized in that: The acidification component further comprises an exhaust valve, the air inlet end of the exhaust valve being connected to the top of the acidification kettle.

5. The continuous acidification device according to claim 1, characterized in that: The acidification assembly further includes a cooling element, which is connected to the acidification kettle and is used to cool the acidification kettle.

6. The continuous acidification device according to claim 5, characterized in that: The cooling member includes a first cooling pipe, which is spiral and arranged around the acidification kettle.

7. The continuous acidification device according to claim 6, characterized in that: The cooling member further includes a second cooling pipe, which is spiral and arranged around the acidification kettle.

8. The continuous acidification device according to claim 7, characterized in that: The second cooling pipe is disposed below the first cooling pipe, and the length of the second cooling pipe is shorter than that of the first cooling pipe.

9. The continuous acidification device according to claim 1, characterized in that: The acid storage assembly includes an acid storage tank, the acid storage cavity is formed in the acid storage tank, and the acid storage tank is connected to each of the acidification kettles.

10. The continuous acidification device according to claim 9, characterized in that: The acid storage assembly further includes a plurality of metering pumps, which are arranged in one-to-one correspondence with the acidification kettle. The liquid inlet end of the metering pump is connected to the acid storage tank, and the liquid outlet end is connected to the acidification kettle.

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