Cooling crystallization tank for potassium nitrate production
By designing a cooling crystallization slot, which includes potassium nitrate nitrate in the groove, the first drainage, and the second runway, it solves the problem of slow cooling and crystallization of potassium nitrate solution, and achieves a more efficient cooling crystallization process.
Patent Information
- Application Number
- CN202421111885.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the existing potassium nitrate production process, the cooling and crystallization speed of the potassium nitrate solution is slow, which affects the production efficiency.
A cooling crystal groove is designed with potassium nitrate production, including grooves, multiple first runways and second runways. The coolant enters and discharges through the first runway. The second runway is alternately set on both sides of the first runway. The first stream of the first runway is connected at both ends to form a relatively uniform cooling solution distribution, which improves the heat absorption efficiency.
Through the design of the cooling crystal slot, the cooling crystallization speed of potassium nitrate solution has accelerated significantly, which improves production efficiency.
Smart Images
Figure CN222400311U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of potassium nitrate production, and particularly relates to a cooling crystallization tank for potassium nitrate production. Background Art
[0002] Potassium nitrate is a chemical substance with the chemical formula KNO3, which is commonly used in gunpowder, fertilizer, food additives and other fields. In gunpowder, potassium nitrate is an important oxidant that can provide oxygen to support combustion. In fertilizers, potassium nitrate can provide nitrogen, potassium and other elements required by plants. In food additives, potassium nitrate is often used as a preservative and pigment.
[0003] Potassium nitrate and byproduct agricultural ammonium chloride can be produced by double decomposition reaction of ammonium nitrate and potassium chloride. The process flow of generating potassium nitrate by double decomposition reaction of ammonium nitrate and potassium chloride is as follows: semi-finished product cooling crystallization - floating washing centrifugation - raw nitrate re-dissolution - filter pressing - finished product crystallization - washing filtration - centrifugal separation - drying. In the process of finished product crystallization, potassium nitrate solution with higher concentration and temperature needs to be cooled and crystallized. Utility Model Content
[0004] The utility model provides a cooling crystallization tank for potassium nitrate production, which can accelerate the cooling crystallization speed of potassium nitrate solution.
[0005] The utility model is realized by the following technical scheme: A cooling crystallization tank for potassium nitrate production comprises: a tank body, a plurality of first flow channels and a second flow channel. The tank body has an opening side and a sealing side arranged oppositely along the gravity direction, and has a first side and a second side arranged oppositely along the first direction. A plurality of first flow channels are arranged on the sealing side. A plurality of first flow channels are arranged at intervals along the second direction, and have a liquid inlet located on the first side for the entry of a coolant and a liquid outlet located on the second side for the discharge of the coolant. The second flow channels are alternately arranged on opposite sides of the first flow channel in the second direction. Both ends of the second flow channel are connected to the first flow channel. The orthographic projections of the second flow channels respectively connected to the adjacent first flow channels on the first side or the second side partially overlap. The first direction, the second direction and the gravity direction are perpendicular to each other.
[0006] Optionally, the second flow channel includes a second sub-channel and a third sub-channel. One end of the second sub-channel is connected to the first flow channel, and the distance between the axis of the second sub-channel and the axis of the first flow channel gradually increases in the direction approaching the first side. One end of the third sub-channel is connected to the first flow channel, and the distance between the axis of the third sub-channel and the axis of the first flow channel gradually increases in the direction approaching the first side, and the other end of the third sub-channel is connected to the other end of the second sub-channel.
[0007] Optionally, the first flow channel includes a plurality of first sub-channels. The plurality of first sub-channels are sequentially connected, the first sub-channel, the second sub-channel and the third sub-channel are arranged to form a loop, and the adjacent second sub-channels and the first sub-channels are coaxial in a direction close to the first side.
[0008] Optionally, a cooling crystallization tank for potassium nitrate production further comprises a first water storage tank. The first water storage tank is arranged on the first side and is connected to the liquid inlet.
[0009] Optionally, a cooling crystallization tank for potassium nitrate production further comprises a second water storage tank. The second water storage tank is arranged on the second side, and the liquid outlet is used to discharge the cooling liquid to the second water storage tank.
[0010] Optionally, a cooling crystallization tank for potassium nitrate production further comprises a pump for driving the cooling liquid to move from the second water storage tank to the first water storage tank.
[0011] Optionally, a cooling crystallization tank for potassium nitrate production further comprises a support leg, one end of which is arranged on the sealing side, and the other end of which extends along the gravity direction.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] The utility model provides a cooling crystallization tank for potassium nitrate production, comprising: a tank body, a plurality of first flow channels and a second flow channel. The tank body has an opening side and a sealing side arranged oppositely along the gravity direction, and has a first side and a second side arranged oppositely along the first direction. A plurality of first flow channels are arranged on the sealing side. A plurality of first flow channels are arranged at intervals along the second direction, and have a liquid inlet located on the first side for the entry of a coolant and a liquid outlet located on the second side for the discharge of the coolant. The second flow channels are alternately arranged on opposite sides of the first flow channel in the second direction. Both ends of the second flow channel are connected to the first flow channel. The orthographic projections of the second flow channels respectively connected to the adjacent first flow channels on the first side or the second side partially overlap. The first direction, the second direction and the gravity direction are perpendicular to each other.
[0014] Through the above structure, the potassium nitrate cleaning device provided by the utility model can accelerate the cooling and crystallization speed of potassium nitrate solution. Specifically, the coolant enters the first flow channel from the liquid inlet and is discharged from the first flow channel from the liquid outlet. During this period, part of the coolant will absorb the heat on the sealing side to reduce the heat in the tank body. At the same time, the second flow channels are alternately arranged on the opposite sides of the first flow channel in the second direction. And the positive projections of the second flow channels that are respectively connected to the adjacent first flow channels on the first side or the second side overlap. So that the gap between the adjacent first flow channels in the second direction is occupied by the second flow channel, so that the second flow channel and the first flow channel are more evenly distributed on the sealing side, and because both ends of the second flow channel are connected to the first flow channel, so that the coolant can enter the second flow channel, so that the coolant can more evenly absorb the heat on the sealing side, so that the potassium nitrate solution in the tank body is more evenly cooled and crystallized. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 A schematic diagram of the structure of a cooling crystallization tank for potassium nitrate production provided in an embodiment of the utility model;
[0017] Figure 2 for Figure 1 Middle AA section view;
[0018] Figure 3 for Figure 2 A schematic diagram of the structure of a cooling crystallization tank for potassium nitrate production in the middle B direction;
[0019] Figure 4 When the coolant moves along the N1 direction, Figure 3 A partial enlarged view of point C in the middle;
[0020] Figure 5 When the coolant moves along the N2 direction, Figure 3 A partial enlarged view of point C in the middle.
[0021] In the figure:
[0022] 1-tank body; 11-opening side; 12-sealing side; 13-first side; 14-second side; 15-leg; 2-first flow channel; 2A-first sub-channel; 2B-liquid inlet; 2C-liquid outlet; 21-second flow channel; 21A-second sub-channel; 21B-third sub-channel; 3-first water storage tank; 4-second water storage tank; 5-water pump; X-gravity direction; Y-first direction; Z-second direction. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0024] Example:
[0025] Reference Figure 1-Figure 5 This embodiment provides a cooling crystallization tank for potassium nitrate production, which can accelerate the cooling crystallization speed of potassium nitrate solution. The cooling crystallization tank for potassium nitrate production includes: a tank body, a plurality of first flow channels and a second flow channel. The tank body has an opening side and a sealing side arranged oppositely along the gravity direction, and has a first side and a second side arranged oppositely along the first direction.
[0026] It can be understood that the potassium nitrate solution can be poured into the tank body 1 through the open side 11 to be contained in the tank body 1 .
[0027] A plurality of first flow channels 2 are disposed on the sealing side 12. The plurality of first flow channels 2 are arranged at intervals along the second direction Z, and have a liquid inlet 2B located on the first side 13 for the coolant to enter and a liquid outlet 2C located on the second side 14 for the coolant to discharge.
[0028] The second flow channels 21 are alternately arranged on opposite sides of the first flow channel 2 in the second direction Z. Both ends of the second flow channel 21 are connected to the first flow channel 2. The orthographic projections of the second flow channels 21 respectively connected to the adjacent first flow channels 2 on the first side 13 or the second side 14 partially overlap.
[0029] Optionally, the second flow channel 21 and the first flow channel 2 may be arranged to form a polygon or a semicircle.
[0030] It can be understood that the coolant can be water or a cooling medium.
[0031] The first direction Y and the second direction Z may be horizontal directions. For example, the first direction Y may be parallel to the length direction of the tank body 1, and the second direction Z may be parallel to the width direction of the tank body 1. The first direction Y, the second direction Z and the gravity direction X are perpendicular to each other.
[0032] Through the above structure, the potassium nitrate cleaning device provided by the utility model can accelerate the cooling and crystallization speed of potassium nitrate solution. Specifically, the cooling liquid enters the first flow channel 2 from the liquid inlet 2B, moves along the N1 direction and is discharged from the first flow channel 2 from the liquid outlet 2C. During this period, part of the cooling liquid absorbs the heat of the sealing side 12, thereby reducing the heat in the tank body 1. At the same time, the second flow channels 21 are alternately arranged on the opposite sides of the first flow channel 2 in the second direction Z. And the positive projections of the second flow channels 21 respectively connected to the adjacent first flow channels 2 on the first side 13 or the second side 14 overlap. So that the gap between the adjacent first flow channels 2 in the second direction Z is occupied by the second flow channel 21, so that the second flow channel 21 and the first flow channel 2 are more evenly distributed on the sealing side 12, and because both ends of the second flow channel 21 are connected to the first flow channel 2, so that the cooling liquid can enter the second flow channel 21, so that the cooling liquid can more evenly absorb the heat of the sealing side 12, so that the potassium nitrate solution in the tank body 1 is more evenly cooled and crystallized.
[0033] An optional implementation of this embodiment is as follows: Figure 4 and Figure 5 As shown, the second flow channel 21 includes a second sub-channel 21A and a third sub-channel 21B. One end of the second sub-channel 21A is connected to the first flow channel 2, and the distance between the axis of the second sub-channel 21A and the axis of the first flow channel 2 gradually increases in the direction close to the first side 13. One end of the third sub-channel 21B is connected to the first flow channel 2, and the distance between the axis of the third sub-channel 21B and the axis of the first flow channel 2 gradually increases in the direction close to the first side 13, and the other end of the third sub-channel 21B is connected to the other end of the second sub-channel 21A.
[0034] Specifically, Figure 4 As shown, when the coolant moves from the first side 13 to the second side 14 via the first flow channel 2 along the N1 direction, the distance between the axis of the second sub-channel 21A and the axis of the first flow channel 2 gradually increases in the direction away from the second side 14, and the distance between the axis of the third sub-channel 21B and the axis of the first flow channel 2 also gradually increases in the direction away from the second side 14. Therefore, when the coolant moves along the first flow channel 2 toward the liquid outlet 2C, it will enter the second sub-channel 21A and the third sub-channel 21B at a slower speed, so that the coolant moves along the N1 direction as a whole.
[0035] like Figure 5As shown, when the coolant moves from the second side 14 to the first side 13 along the N2 direction, the distance between the axis of the second subchannel 21A and the axis of the first channel 2 gradually increases in the direction away from the second side 14. Therefore, the coolant is more likely to enter the second subchannel 21A from the end of the second subchannel 21A close to the second side 14 along the N3 direction, and return to the first channel 2 from the other end of the third subchannel 21B away from the second side 14 along the N3 direction, and generate convection with the coolant originally flowing in the first channel 2 away from the cavity. Thus, the flow speed of the coolant in the first channel 2 is slowed down. So as to limit the movement of the coolant from the second side 14 to the direction close to the first side 13.
[0036] In this way, even if the pressure at the liquid inlet 2B is relatively low, the backflow of the coolant can be prevented.
[0037] An optional implementation of this embodiment is as follows: the first flow channel 2 includes a plurality of first sub-channels 2A. The plurality of first sub-channels 2A are sequentially connected, the first sub-channel 2A, the second sub-channel 21A and the third sub-channel 21B are arranged to form a loop, and in the direction close to the first side 13, the adjacent second sub-channels 21A and the first sub-channel 2A are coaxial.
[0038] In this way, Figure 5 As shown, when the coolant moves from the second side 14 toward the first side 13, it is easier to generate diversion so that the coolant moves in the N2 direction and the N3 direction at the same time, thereby making it easier to generate convection at the connection between the third sub-channel 21B and the first sub-channel 2A, so as to limit the coolant from moving from the second side 14 toward the first side 13.
[0039] An optional implementation of this embodiment is as follows: A cooling crystallization tank for potassium nitrate production further includes a first water storage tank 3. The first water storage tank 3 is disposed on the first side 13, and the first water storage tank 3 is connected to the liquid inlet 2B.
[0040] In this way, by setting up the first water storage tank 3, the cooling crystallization tank for potassium nitrate production can independently store coolant, thereby reducing the impact of environmental factors on the cooling crystallization tank for potassium nitrate production.
[0041] An optional implementation of this embodiment is as follows: A cooling crystallization tank for potassium nitrate production further includes a second water storage tank 4. The second water storage tank 4 is disposed on the second side 14, and the liquid outlet 2C is used to discharge the cooling liquid to the second water storage tank 4.
[0042] In this way, by setting up the second water storage tank 4, the cooling crystallization tank for potassium nitrate production can collect the coolant discharged from the liquid outlet 2C for reuse.
[0043] Preferably, the distance from the bottom of the first water storage tank 3 to the ground can be greater than the distance from the liquid inlet 2B to the ground. At the same time, the distance from the liquid inlet 2B to the ground can be equal to the distance from the liquid outlet 2C to the ground and greater than the distance from the top of the second water storage tank 4 to the ground. This allows the coolant to flow from the first water storage tank 3 through the liquid inlet 2B and the liquid outlet 2C into the second water storage tank 4 under the action of gravity.
[0044] An optional implementation of this embodiment is as follows: A cooling crystallization tank for potassium nitrate production further includes a water pump 5. The water pump 5 is used to drive the coolant to move from the second water storage tank 4 to the first water storage tank 3.
[0045] Specifically, the coolant can move from the second water tank 4 to the first water tank 3 to form a cycle through the water pump 5. Preferably, the water pump 5 can also be used to drive the coolant through a cooling mechanism (such as a radiator) and then enter the first water tank 3, so that the coolant can be cooled faster.
[0046] An optional implementation of this embodiment is as follows: A cooling crystallization tank for potassium nitrate production further includes a support leg 15. One end of the support leg 15 is arranged on the sealing side 12, and the other end extends along the gravity direction X.
[0047] In this way, the legs 15 abut against the ground so that there is a certain distance between the ground and the cooling crystallization tank, reducing the pollution of the cooling crystallization tank by ground dust. Preferably, the other end of the legs 15 away from the tank body 1 can also be equipped with a pulley to facilitate the movement of the cooling crystallization tank.
[0048] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A cooling crystallization tank for potassium nitrate production, characterized in that: include: The tank body has an opening side and a sealing side disposed opposite to each other along the gravity direction, and has a first side and a second side disposed opposite to each other along the first direction; A plurality of first flow channels are arranged on the sealing side, the plurality of first flow channels are arranged at intervals along the second direction, and have a liquid inlet located on the first side for the coolant to enter and a liquid outlet located on the second side for the coolant to discharge; Second flow channels are alternately arranged on opposite sides of the first flow channel in the second direction, both ends of the second flow channels are connected to the first flow channel, and overlap with the orthographic projections of the second flow channels connected to the adjacent first flow channel on the first side or the second side; The first direction, the second direction and the gravity direction are perpendicular to each other.
2. A cooling crystallization tank for potassium nitrate production according to claim 1, characterized in that, The second flow channel comprises: a second sub-channel, one end of which is connected to the first flow channel, and a distance between an axis of the second sub-channel and an axis of the first flow channel gradually increases in a direction approaching the first side; The third sub-channel has one end connected to the first flow channel, the distance between the axis of the third sub-channel and the axis of the first flow channel gradually increases in the direction approaching the first side, and the other end of the third sub-channel is connected to the other end of the second sub-channel.
3. A cooling crystallization tank for potassium nitrate production according to claim 2, characterized in that, The first flow channel comprises: A plurality of first sub-channels are sequentially connected, the first sub-channel, the second sub-channel and the third sub-channel are arranged to form a loop, and the adjacent second sub-channels are coaxial with the first sub-channel in a direction close to the first side.
4. A cooling crystallization tank for potassium nitrate production according to any one of claims 1-3, characterized in that, Also includes: The first water storage tank is arranged on the first side, and the first water storage tank is communicated with the liquid inlet.
5. A cooling crystallization tank for potassium nitrate production according to claim 4, characterized in that, Also includes: The second water storage tank is arranged on the second side, and the liquid outlet is used to discharge the cooling liquid into the second water storage tank.
6. A cooling crystallization tank for potassium nitrate production according to claim 5, characterized in that, Also includes: A water pump is used to drive the coolant to move from the second water storage tank to the first water storage tank.
7. A cooling crystallization tank for potassium nitrate production according to claim 1, characterized in that, Also includes: A leg has one end disposed on the sealing side and the other end extending along the gravity direction.