Amine liquid purification treatment device

Abstract

The present invention relates to the technical field of amine liquid purification, and in particular to an amine liquid purification treatment device, which includes a cold analysis tank with a crystallization function; a vertically arranged riser is provided in the cold analysis tank, a rising auger is rotatably provided in the riser, a temporary storage box is provided at the top of the internal cavity of the cold analysis tank, the top of the riser extends into the interior of the temporary storage box, a crushing piece for crushing the crystals is provided in the temporary storage box, a discharge pipe is connected to the side wall of the cold analysis tank, the bottom of the discharge pipe is connected to the bottom of the temporary storage box, a discharge auger is rotatably provided in the discharge pipe, a filter hole 1 is provided in the side wall of the riser, and a filter hole 2 is provided at the bottom of the discharge pipe. The present invention can crush and discharge crystals, improve the situation of blocking the device when the crystals are too large, maintain the continuity and stability of the crystallization process, reduce the amount of solution taken out when discharging the crystals, and save raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of amine liquid purification, and in particular to an amine liquid purification treatment device. Background Art

[0002] Amine purification is a treatment technology used in industrial production. Its main purpose is to remove impurities in the solution and improve product quality. In many industrial processes, such as synthetic ammonia and oil refining, amine is used as an absorbent to absorb acidic gases. However, during the absorption process, the amine will gradually become ineffective, so it is necessary to purify the amine to restore its absorption performance.

[0003] At present, the purification methods of amine solution mainly include chemical treatment, physical treatment and biological treatment, etc. Among them, cooling crystallization is a commonly used physical treatment method, which reduces the solution temperature to crystallize and precipitate impurities such as sodium sulfate, thereby achieving amine solution purification.

[0004] Referring to the Chinese patent document with announcement number CN210559482U and announcement date May 19, 2020, entitled A Frozen Crystallization Sodium Sulfate Removal Device, the raw material solution enters the cold precipitation tank with crystallization function, the temperature decreases, the solubility of sodium sulfate decreases, crystal nuclei are formed and continue to grow, and when the grains grow to a size where their gravity is greater than the upward lift, the grains will drop through the crystal outlet pipe to the sedimentation cylinder for unified collection.

[0005] In actual production operations, the above technology has some problems. For example, larger crystals are prone to cause device blockage, because these larger crystals are easy to get stuck in the narrow part of the pipeline or the valve when flowing through the pipeline, resulting in pipeline blockage, which will hinder the normal flow of the liquid. In addition, larger crystals will also cause wear and tear on the device during movement, shortening the service life of the device. In the process of crystal discharging, there is also the problem that part of the solution is discharged together with the crystal, causing the useful solute in the solution to be discharged together with the crystal, resulting in waste of raw materials and reduced yield. Summary of the invention

[0006] In view of this, the present invention provides an amine solution purification treatment device, aiming to solve the technical problems of device clogging and solution carrying out during the crystallization discharging process in the prior art.

[0007] In order to solve the above technical problems, the present invention provides an amine liquid purification treatment device, which adopts the following technical scheme: an amine liquid purification treatment device, comprising a cold analysis tank with a crystallization function; a vertically arranged riser is provided in the cold analysis tank, a rising auger is rotatably provided in the riser, a temporary storage box is provided at the top of the internal cavity of the cold analysis tank, the top of the riser extends into the interior of the temporary storage box, a crushing part for crushing the crystals is provided in the temporary storage box, a discharge pipe is connected to the side wall of the cold analysis tank, the bottom of the discharge pipe is connected to the bottom of the temporary storage box, and a discharge auger is rotatably provided in the discharge pipe; a filter hole 1 is provided on the side wall of the riser, and a filter hole 2 is provided at the bottom of the discharge pipe.

[0008] By adopting the above technical solution, the ascending auger can continuously transport the crystals, move the crystals upward, and crush them in the temporary storage box. The crushed crystals are discharged through the discharge pipe and the discharge auger to ensure that the crystals are not too large, maintaining the continuity and stability of the crystallization process. The size of the crushed crystals is relatively uniform, which is conducive to the subsequent separation and purification process and improves the quality of the final product. The design of the filter hole 1 and the filter hole 2 can effectively discharge the solution that moves upward with the crystals, reduce the amount of solution taken out when discharging the crystals, thereby saving raw materials and improving the economy of the overall process.

[0009] Optionally, the crushing element includes a rotating ring rotatably connected to the circumferential outer wall of the top of the riser, the outer wall of the rotating ring is connected to a guide ring, the guide ring is arranged inclined downward in a direction away from the central axis of the riser, and a gap is left between the outer wall of the guide ring and the inner wall of the temporary storage box.

[0010] By adopting the above technical scheme, the rising auger transports the crystals, and the crystals fall on the rotating ring. The rotating ring rotates, so that the crystals move in the direction away from the central axis of the rising tube under the action of centrifugal force. The centrifugal force is used to make the crystals collide with the inner wall of the temporary storage box and crush the crystals. This crushing method is more efficient, can quickly process a large number of crystals, and helps to achieve uniform crushing of the crystals. The crushing device can also adapt to crystals of different sizes, has strong flexibility, and high space utilization.

[0011] A guide ring is set to guide the moving path of the crystals. The guide ring rotates with the rotating ring. Under the combined action of gravity and centrifugal force, the crystals on the guide ring collide with the inner wall of the temporary storage box with greater force, thereby improving the crushing efficiency. A gap is left between the guide ring and the inner wall of the temporary storage box to facilitate the downward movement of the crystals, which can effectively improve the situation where the crystals are over-crushed. The remaining gap also makes the cleaning and maintenance of the device more convenient.

[0012] Optionally, a rotating shaft for driving the ascending auger to rotate is provided in the cold analysis tank, and a connecting ring is provided on the side wall fixing sleeve of the rotating shaft. The connecting ring is arranged obliquely downward in a direction away from the central axis of the rotating shaft, and the outer side of the connecting ring is fixedly connected to the material guide ring through a plurality of connecting rods.

[0013] By adopting the above technical solution, the setting of the connecting ring and the connecting rod can make the rotating ring and the guide ring rotate with the rotation of the rotating shaft, without the need to additionally set up a power source for driving the rotating ring to rotate, which facilitates structural design and reduces the occurrence of conflicts between structures.

[0014] Optionally, the bottom of the connecting rod protrudes from the outside of the guide ring.

[0015] By adopting the above technical solution, part of the crystals that cannot be crushed remain in the gap between the guide ring and the inner wall of the temporary storage box, and the connecting rod has a crushing effect on the crystals during rotation, thereby improving the crushing effect of the device.

[0016] Optionally, the bottom surface of the temporary storage box is inclined downward in a direction away from the central axis of the riser, and the bottom surface of the rotating ring is connected to a push plate, and the bottom surface of the push plate abuts against the bottom surface of the temporary storage box.

[0017] By adopting the above technical solution, it is helpful to push the crystals at the bottom of the temporary storage box to the discharge pipe, ensure the smooth discharge of the crystals, and reduce the accumulation of crystals at the bottom of the temporary storage box.

[0018] Optionally, a side wall of the temporary storage box is provided with a plurality of seed crystal discharge holes, and the plurality of seed crystal discharge holes are arranged along the circumference of the temporary storage box.

[0019] By adopting the above technical solution, when the crystals collide with the inner wall of the temporary storage box, the broken fine crystals continue to move under the action of centrifugal force and move along the seed crystal discharge hole to the outside of the temporary storage box and fall into the solution of the cold analysis tank. The fallen fine crystals can be used as seed crystals to promote crystallization and improve production efficiency. The presence of seed crystals also helps to form crystals of uniform size, which facilitates the operation of the device.

[0020] Optionally, the guide ring is provided with a plurality of leakage holes, the leakage holes penetrate the guide ring in a vertical direction, and the plurality of leakage holes are arranged along the circumference of the guide ring.

[0021] Optionally, a gap is left between the edge of the ascending auger and the inner wall of the ascending pipe.

[0022] In summary, the present invention includes the following beneficial technical effects:

[0023] 1. Continuously transport crystals, crush and discharge them, improve the situation of clogging the device when the crystals are too large, maintain the continuity and stability of the crystallization process, and make the size of the crushed crystals more uniform, which is beneficial to the subsequent separation and purification process, reduce the amount of solution taken out when discharging the crystals, save raw materials, and improve the economy of the overall process.

[0024] 2. Use centrifugal force to crush the crystals. This crushing method is more efficient, can quickly process a large number of crystals, and helps to achieve uniform crushing of the crystals. The crushing device can also adapt to crystals of different sizes, has strong flexibility, and high space utilization.

[0025] 3. For the part of crystals that cannot be crushed, they remain in the gap between the guide ring and the inner wall of the temporary storage box. The connecting rod has a crushing effect on the crystals during rotation, thereby improving the crushing effect of the device.

[0026] 4. The crushed fine crystals continue to move under the action of centrifugal force and move along the seed crystal discharge hole to the outside of the temporary storage box and fall into the solution of the cold analysis tank. The fallen fine crystals can be used as seed crystals to promote crystallization and improve production efficiency. The presence of seed crystals also helps to form crystals of uniform size, which facilitates the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0028] Figure 2 is a cross-sectional schematic diagram of an embodiment of the present invention;

[0029] Figure 3 for Figure 2 A partial enlarged schematic diagram of part A;

[0030] Figure 4 for Figure 2 A partial enlarged schematic diagram of part B;

[0031] Figure 5 Schematic diagram of the structure of the seed crystal discharge hole and the guide ring in an embodiment of the present invention.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. cold analysis tank; 2. rising member; 21. rising pipe; 211. filter hole one; 22. rising auger; 23. rotating shaft; 3. temporary storage box; 31. seed crystal discharge hole; 32. pushing plate; 4. crushing member; 41. rotating ring; 42. guide ring; 421. leakage hole; 43. connecting ring; 44. connecting rod; 5. discharge member; 51. discharge pipe; 511. filter hole two; 52. discharge auger. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0034] The following is combined with Figure 1 -Attached Figure 5 The present invention is described in further detail.

[0035] The embodiment of the present invention discloses an amine liquid purification treatment device. Figures 1 to 5 , an amine liquid purification treatment device, including a cold analysis tank 1, a rising member 2, a temporary storage box 3, a crushing member 4 and a discharging member 5.

[0036] Reference Figure 1 and Figure 2 , the middle part of the cold precipitation tank 1, the cold precipitation tank 1 has a crystallization function, the raw material solution enters the cold precipitation tank 1 with a crystallization function, the temperature decreases, the solute in the solution forms a crystal nucleus and continues to grow. The bottom of the cavity inside the cold precipitation tank 1 is set to be conical, so that the crystals in the cold precipitation tank 1 have a tendency to move toward the central axis of the cold precipitation tank 1 under the action of their own gravity.

[0037] Reference Figure 2 and Figure 3 The rising member 2 is arranged inside the cold precipitation tank 1, and is used to make the crystals at the bottom of the cold precipitation tank 1 continuously move upward. The rising member 2 includes a rising pipe 21 and a feeding auger.

[0038] Reference Figure 2 and Figure 3 The riser 21 is arranged on its own axis, and the riser 21 is vertically arranged inside the cold analysis tank 1. The riser auger 22 is rotatably arranged inside the riser 21. The riser auger 22 rotates and transports the crystals at the bottom of the cold analysis tank 1 upward. The side wall of the riser 21 is provided with a plurality of filtering holes 211 for allowing the solution moving upward with the crystals to flow out.

[0039] Reference Figure 2 and Figure 3 The cold analysis tank 1 is provided with a rotating shaft 23 for driving the ascending auger 22 to rotate. The ascending auger 22 is fixedly sleeved on the circumferential side wall of the rotating shaft 23. As the rotating shaft 23 rotates, the ascending auger 22 is driven to rotate. In this embodiment, the rotating shaft 23 is driven to rotate by setting a rotating motor. In other embodiments, other power sources can also be used to drive the rotation of the rotating shaft 23.

[0040] Reference Figure 3Furthermore, a gap is left between the edge of the ascending auger 22 and the inner wall of the ascending tube 21, so that the solution can flow downward along the gap, reducing the situation where the solution moves with the crystallization, thereby saving raw materials and improving the economy of the overall process.

[0041] Reference Figure 2 and Figure 4 The bottom of the temporary storage box 3 is fixedly sleeved on the circumferential outer wall of the riser 21, the top surface of the riser 21 is lower than the top surface of the temporary storage box 3, and the top surface of the temporary storage box 3 is provided with a vertically extending through groove.

[0042] Reference Figure 4 and Figure 5 The crushing member 4 is arranged in the temporary storage box 3, and is used to crush the crystals transported to the temporary storage box 3 by the ascending auger 22, so as to solve the problem of device blockage and device damage caused by over-large crystals. The crushing member 4 includes a rotating ring 41, a guide ring 42, a connecting ring 43 and a connecting rod 44.

[0043] Reference Figure 4 and Figure 5 The rotating ring 41 is rotatably sleeved on the circumferential outer wall at the top of the riser 21, and the crystals transported to the top of the riser 21 by the ascending auger 22 fall onto the rotating ring 41. During the rotation of the rotating ring 41, the crystals on the rotating ring 41 move in a direction away from the central axis of the riser 21 under the action of centrifugal force. The inner side of the guide ring 42 is fixedly connected to the outer side of the rotating ring 41, and the crystals on the rotating ring 41 can fall onto the guide ring 42. The guide ring 42 is tilted downward in a direction away from the central axis of the riser 21, and the guide ring 42 has a guiding effect on the crystals. There is a gap between the outer side of the guide ring 42 and the inner wall of the temporary storage box 3, so that the crystals can move downward along the gap, which can effectively improve the situation where the crystals are over-crushed. The remaining gap also makes the cleaning and maintenance of the device more convenient.

[0044] Reference Figure 4 and Figure 5 As the rotating ring 41 and the guide ring 42 rotate, the crystals are subjected to the centrifugal force, causing the crystals to collide with the inner wall of the temporary storage box 3 and be broken. This crushing method is more efficient, can quickly process a large number of crystals, and helps to achieve uniform crushing of the crystals. The crushing device can also adapt to crystals of different sizes, has strong flexibility, and high space utilization. Under the combined action of gravity and centrifugal force, the crystals on the guide ring 42 collide with the inner wall of the temporary storage box 3 with greater force, thereby improving the crushing efficiency.

[0045] Reference Figure 4 and Figure 5Furthermore, a plurality of seed crystal discharge holes 31 are provided on the side wall of the temporary storage box 3, and the seed crystal discharge holes 31 penetrate the temporary storage box 3 in the radial direction of the temporary storage box 3, and the plurality of seed crystal discharge holes 31 are arranged along the circumferential direction of the temporary storage box 3. When the crystal collides with the inner wall of the temporary storage box 3, the fine crystals after being broken continue to move under the action of centrifugal force and move along the seed crystal discharge holes 31 to the outside of the temporary storage box 3 and fall into the solution of the cold precipitation tank 1. The fallen fine crystals can be used as seed crystals to promote crystallization and improve production efficiency. The presence of seed crystals also helps to form crystals of uniform size, which is convenient for the operation of the device.

[0046] Reference Figure 4 and Figure 5 Furthermore, a plurality of leak holes 421 are provided on the guide ring 42, and the leak holes 421 vertically penetrate the guide ring 42, and the plurality of leak holes 421 are arranged along the circumference of the guide ring 42. Smaller crystals on the guide ring 42 are made to fall downward, so as to reduce the excessive breakage of crystals, and help maintain the uniformity of crystals.

[0047] Reference Figure 4 and Figure 5 The connecting ring 43 is fixedly sleeved on the circumferential side wall of the rotating shaft 23, and the connecting ring 43 is tilted downward in the direction away from the central axis of the rotating shaft 23. The outer side of the connecting ring 43 extends downward and is located inside the temporary storage box 3. The connecting ring 43 cooperates with the temporary storage box 3 to form a box body, which can make the crystals located inside the temporary storage box 3 and crushed, reduce the situation where the crystals are accidentally thrown out of the temporary storage box 3, and improve the stability of the device.

[0048] Reference Figure 4 and Figure 5 A plurality of connecting rods 44 are provided, and the plurality of connecting rods 44 are arranged along the circumference of the guide ring 42, and the two ends of the connecting rods 44 are fixedly connected to the outer side of the connecting ring 43 and the top surface of the guide ring 42 in sequence. The setting of the connecting ring 43 and the connecting rods 44 can drive the rotation of the rotating ring 41 and the guide ring 42, and there is no need to set up an additional power source for driving the rotating ring 41 to rotate, which is convenient for structural design and reduces the occurrence of conflicts between structures.

[0049] Reference Figure 4 and Figure 5 Furthermore, the bottom of the connecting rod 44 protrudes from the outside of the guide ring 42. For the part of the crystal that cannot be crushed, the part of the crystal remains in the gap between the guide ring 42 and the inner wall of the temporary storage box 3. The connecting rod 44 has a crushing effect on the crystal during the rotation process, thereby improving the crushing effect of the device.

[0050] Reference Figure 4 and Figure 5Furthermore, the bottom surface of the temporary storage box 3 is tilted downward in a direction away from the central axis of the riser 21, which is conducive to moving the crystals at the bottom of the temporary storage box 3 toward the edge of the temporary storage box 3. The bottom surface of the rotating ring 41 is fixedly connected with a push plate 32, and the bottom surface of the push plate 32 abuts against the bottom surface of the temporary storage box 3. As the rotating ring 41 rotates, the push plate 32 rotates and causes the crystals at the bottom of the temporary storage box 3 to move in a directional manner, which is conducive to the discharge of the crystals.

[0051] Reference Figure 4 The discharge member 5 includes a discharge pipe 51 and a discharge auger 52. The discharge pipe 51 is fixedly connected to the side wall of the cold analysis tank 1. The discharge pipe 51 is inclined. The top of the bottom surface of the discharge pipe 51 is flush with the bottom surface of the temporary storage box 3. The side wall of the discharge pipe 51 and the side wall of the temporary storage box 3 are provided with through holes that communicate with each other. Figure 5 , the crystals at the bottom of the temporary storage box 3 enter the discharge pipe 51 under the action of the push plate 32, and the discharge auger 52 is arranged inside the discharge pipe 51, and the discharge auger 52 rotates, and the crystals are discharged to the outside of the cold separation tank 1. In this embodiment, the discharge auger 52 is driven to rotate by a rotating motor, and in other embodiments, other power sources can also be used to drive the rotation of the discharge auger 52.

[0052] Reference Figure 4 A plurality of filter holes 511 are provided at the bottom of the discharge pipe 51 for allowing the solution to flow out, thereby reducing the situation where the solution moves with the crystals, and allowing small crystals to fall downward into the cold precipitation tank 1, which helps to improve the crystallization efficiency.

[0053] The implementation principle of an amine liquid purification treatment device according to an embodiment of the present invention is as follows:

[0054] The raw material solution enters the cold precipitation tank 1 having a crystallization function, the temperature decreases, and the solute in the solution forms crystal nuclei and continues to grow.

[0055] After the cold analysis tank 1 has been working for a period of time, the rotating motor is started to drive the rotating shaft 23 to rotate, and the ascending auger 22 rotates. The ascending auger 22 transports the crystals at the bottom of the cold analysis tank 1 upward, and the crystals are transported to the top of the ascending pipe 21 and fall on the rotating ring 41 and the guide ring 42.

[0056] As the rotating shaft 23 rotates, the connecting ring 43, the connecting rod 44, the rotating ring 41, the guide ring 42 and the pushing plate 32 rotate, and the crystals on the rotating ring 41 and the guide ring 42 collide with the inner wall of the temporary storage box 3 under the action of centrifugal force and gravity and are broken. The broken crystals move downward through the gap between the guide ring 42 and the inner wall of the temporary storage box 3, and the crystals can also move downward through the leak hole 421 on the guide ring 42. For crystals that are large in size and have not been successfully broken, due to the inclined setting of the guide ring 42, the crystals move to the gap between the guide ring 42 and the inner wall of the temporary storage box 3 under the action of gravity, and as the connecting rod 44 rotates, the connecting rod 44 breaks the crystals.

[0057] The crystals that fall to the bottom of the temporary storage box 3 slide along the bottom surface of the temporary storage box 3 under the action of gravity, pushing the plate 32 to rotate and push the crystals to move in a directional manner. The crystals fall into the discharge pipe 51, and the discharge auger 52 rotates and drives the crystals to move to the outside of the cold analysis tank 1.

[0058] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An amine liquid purification treatment device, comprising a cold precipitation tank with a crystallization function, characterized in that: A vertically arranged riser is provided in the cold analysis tank, a rising auger is rotatably provided in the riser, a temporary storage box is provided on the top of the internal cavity of the cold analysis tank, the bottom of the temporary storage box is fixedly sleeved on the circumferential outer wall of the riser, the top of the riser extends into the interior of the temporary storage box, the bottom surface of the temporary storage box is tilted downward in the direction away from the central axis of the riser, a plurality of seed crystal discharge holes are provided on the side wall of the temporary storage box, and the plurality of seed crystal discharge holes are arranged along the circumference of the temporary storage box, a crushing part for crushing crystals is provided in the temporary storage box, a discharge pipe is connected to the side wall of the cold analysis tank, the discharge pipe is tilted, the top of the bottom surface of the discharge pipe is flush with the bottom surface of the temporary storage box, the bottom of the discharge pipe is connected to the bottom of the temporary storage box, the side wall of the discharge pipe and the side wall of the temporary storage box are provided with through holes that are interconnected, and a discharge auger is rotatably provided in the discharge pipe; The side wall of the ascending pipe is provided with a first filter hole, and the bottom of the discharge pipe is provided with a second filter hole; The crushing element comprises a rotating ring rotatably connected to the circumferential outer wall of the top of the riser, the outer wall of the rotating ring is connected to a guide ring, the guide ring is arranged obliquely downward in a direction away from the central axis of the riser, a gap is left between the outer wall of the guide ring and the inner wall of the temporary storage box, a plurality of leakage holes are opened on the guide ring, the leakage holes penetrate the guide ring in the vertical direction, and the plurality of leakage holes are arranged along the circumference of the guide ring; The cold analysis tank is provided with a rotating shaft for driving the ascending auger to rotate, and the side wall fixing sleeve of the rotating shaft is provided with a connecting ring, which is arranged obliquely downward in a direction away from the central axis of the rotating shaft, and the outer side of the connecting ring is fixedly connected to the material guide ring through a plurality of connecting rods, and the outer side of the connecting ring extends downward and is located inside the temporary storage box, and the connecting ring cooperates with the temporary storage box to form a box body.

2. The amine liquid purification treatment device according to claim 1, characterized in that: The bottom of the connecting rod protrudes from the outside of the material guiding ring.

3. The amine liquid purification treatment device according to claim 1, characterized in that: The bottom surface of the rotating ring is connected with a pushing plate, and the bottom surface of the pushing plate abuts against the bottom surface of the temporary storage box.

4. The amine liquid purification treatment device according to claim 1, characterized in that: A gap is left between the edge of the ascending auger and the inner wall of the ascending pipe.

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