Horizontal double-stirring melting reactor

Abstract

The present invention belongs to the technical field of reaction kettles, specifically a horizontal double-stirring melting reaction kettle, which comprises a kettle body; a jacket is arranged on the outer surface of the kettle body; an air cavity is arranged between the jacket and the kettle body; a steam distribution mechanism is installed in the jacket; the steam distribution mechanism includes an annular plate; at the middle position of the jacket, the annular plate is fixedly connected in the air cavity; a partition plate is fixedly connected between the kettle body and the jacket; the partition plate divides both the left chamber and the right chamber into an inner chamber and an outer chamber; a plurality of evenly arranged arc-shaped partition plates are fixedly connected to the side of the partition plate facing the kettle body; two sealing plates are fixedly connected to the side of the partition plate facing the jacket; air holes are evenly arranged in the inner wall of the partition plate, and the air holes are located between the two sealing plates; air grooves are arranged on the partition plate on both sides of the arc-shaped partition plate; by setting the steam distribution mechanism, the present invention can reduce the flow distance of the steam, thereby improving the uneven heating of the raw materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of reaction kettles, specifically a horizontal double-stirring melting reaction kettle. Background Art

[0002] The horizontal double-stirring melting reaction kettle is composed of a reaction kettle shell, a jacket, two sets of stirring devices, two sets of transmission devices, etc.; the reaction kettle is designed in a horizontal structure, which solves the problem of the height limit of the plant space and meets the requirements such as the height of the feeding port position and the discharging port position in the production process; the design of the two sets of stirring devices ensures that the solid raw materials and solvents can quickly and fully and effectively undergo a melting reaction;

[0003] The original decolorization and recrystallization process mainly consists of equipment such as 2 decolorization reaction kettles, 4 recrystallization kettles, and 2 horizontal recrystallization centrifuges. The solid raw materials and solvents are first put into 2 decolorization reaction kettles for melting reaction. The solid raw materials and solvents are melted into a liquid mixture as a whole under the heating of saturated steam. After maintaining the temperature for a certain period of time, the liquid mixture continuously circulates through a magnetic pump in an activated carbon filter tank, a filter element filter, and the decolorization reaction kettle to filter impurities. When the liquid mixture reaches a certain purity, the circulation is stopped, and the high-purity liquid mixture in the 2 decolorization reaction kettles is discharged into the 4 recrystallization kettles for recrystallization reaction. The mixed material after the recrystallization reaction is put into 2 horizontal recrystallization centrifuges for centrifugation operation to obtain the product.

[0004] In the original decolorization and secondary recrystallization process, melting and decolorization are both carried out in 2 decolorization reaction kettles. That is, the solid raw materials and solvents are first put into 2 decolorization reaction kettles to carry out heating and melting operations, heat preservation operations, and decolorization operations in sequence. The main disadvantage of the process is that melting, heat preservation, and decolorization operations are carried out in the same reaction kettle, resulting in a relatively long process reaction time for the decolorization and recrystallization process and affecting the output of the finished product.

[0005] During the process of heating by passing steam into the jacket of the horizontal double-stirring melting reaction kettle, due to the influence of the steam distribution in the jacket and the heat transfer method, there are differences in the heat received by the raw materials in the reaction kettle. Specifically, the raw materials near the steam inlet and the steam flow path can absorb the heat released by the steam more fully because the heat exchange distance with the steam is shorter, so they are heated more; while the raw materials far from the steam inlet and the steam flow path have relatively less heat absorbed because there is heat loss during the heat transfer process and the heat exchange distance is relatively long, resulting in uneven heating of the raw materials. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the above technical problems, the present invention proposes a horizontal double-stirring melting reactor. By setting a steam distribution mechanism, the present invention can reduce the distance of steam flow, thereby improving the uneven heating of raw materials. The specific structure is as follows:

[0007] The horizontal double-stirring melting reactor includes a kettle body; a jacket is arranged on the outer surface of the kettle body; an air cavity is arranged between the jacket and the kettle body; steam inlets are installed on both sides of the jacket;

[0008] A steam distribution mechanism is installed in the jacket; the steam distribution mechanism includes an annular plate; at the middle position of the jacket, the annular plate is fixedly connected in the air cavity, and the annular plate divides the air cavity into a left chamber and a right chamber;

[0009] A partition plate is fixedly connected between the kettle body and the jacket;

[0010] The partition plate divides both the left chamber and the right chamber into an inner chamber and an outer chamber; arc-shaped partition plates are fixedly connected to the side of the partition plate facing the kettle body and are evenly arranged;

[0011] Two sealing plates are fixedly connected to the side of the partition plate facing the jacket; uniformly arranged air holes are opened in the inner wall of the partition plate, and the air holes are all located between the two sealing plates, and intelligent pneumatic regulating valves are installed in the air holes; the air holes are located between two adjacent arc-shaped partition plates; the steam inlets are located between the two sealing plates;

[0012] Air grooves are opened on the partition plate on both sides of the arc-shaped partition plate, and the air grooves communicate with the outer chamber; a steam outlet is installed at the bottom of the outer chamber.

[0013] Preferably, a feeding port is installed at the top of the kettle body; a feed inlet is installed on the right side of the feeding port; a temperature measuring port is arranged on the feed inlet;

[0014] A discharge port is installed at the bottom of the jacket, and the discharge port passes through the jacket and communicates with the inner cavity of the kettle body; bases are installed on both sides at the bottom of the jacket;

[0015] A sight glass port is arranged at the position on the top surface of the kettle body close to the feeding port;

[0016] Mounting brackets are installed on both sides of the feeding port; first motors are installed on the mounting brackets; a driving shaft is installed on the first motor, and the driving shaft extends into the kettle body;

[0017] A stirring paddle is installed on one side of the driving shaft inside the kettle body.

[0018] Preferably, a flow guiding mechanism is arranged inside the kettle body;

[0019] The diversion mechanism includes a limiting plate; the cross-section of the limiting plate is arc-shaped and parallel to the contour of the bottom of the inner cavity of the kettle body; there is a distance between the limiting plate and the inner cavity of the kettle body; both sides of the limiting plate extend to the two end covers respectively and are fixedly connected to the end covers;

[0020] A turntable is rotatably connected to the middle of the limiting plate, and the diameter of the turntable is the same as the outer diameter of the limiting plate; uniformly arranged first push plates are fixedly connected to the outer surface of the turntable; the height of the first push plate is the same as the distance from the limiting plate to the inner cavity of the kettle body;

[0021] A rotating rod is fixedly installed in the middle of the turntable, and the rotating rod extends to the outside of the jacket; the rotating rod and the driving shaft are arranged staggeredly; the stirring paddle and the first push plate do not interfere with each other.

[0022] Preferably, the same number of second push plates are arranged on the end faces on both sides of the turntable; the number of the second push plates is the same as that of the first push plates and they correspond one by one; the second push plates and the stirring paddle do not interfere with each other.

[0023] Preferably, baffles are fixedly connected to the sides of the first push plate and the second push plate close to the end cover.

[0024] Preferably, the second push plate slides on the turntable;

[0025] The side of the second push plate close to the rotating rod also slides inside the rotating rod and is connected to the rotating rod through a compression spring;

[0026] Arc surfaces are provided at both end parts of the limiting plate that do not face the end cover; the end part of the second push plate far from the rotating rod is a semi-circular surface.

[0027] Preferably, the driving shaft extends below the limiting plate;

[0028] A stirring blade is fixedly connected to the side of the driving shaft extending below the limiting plate, and the stirring blade and the first rotating plate do not interfere with each other.

[0029] Preferably, inclined blocks are fixedly connected to the sides of the top of the limiting plate close to the two end covers.

[0030] Preferably, a static flow inclined plane structure is provided at the bottom of the inner cavity of the kettle body.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. In the horizontal double - stirring melting reactor of the present invention, first, steam is gathered between two sealing plates, and then the steam is introduced between two adjacent arc - shaped partition plates through air holes. The steam between the arc - shaped partition plates can heat - melt raw materials at different positions. At the same time, it cooperates with the stirring paddle to agitate the raw materials, enabling the raw materials to exchange heat with the flowing steam, thereby heat - melting the raw materials. During this process, the steam can only flow between two adjacent arc - shaped partition plates, reducing the distance of steam flow, so that the raw materials in the kettle body can all exchange heat with the steam between the two opposite arc - shaped partition plates, thus improving the uneven heating situation of the raw materials.

[0033] 2. In the horizontal double - stirring melting reactor of the present invention, by using the first push plate and the second push plate to push the raw materials to move cyclically under the limiting plate, the raw materials can be heated by steam in batches, so that the raw materials inside the kettle body can exchange heat with steam more evenly, making the raw materials heated relatively evenly, thus avoiding the situation that some raw materials far from the jacket inside the kettle body cannot be better heated by steam, resulting in uneven heating of the raw materials. When the raw materials are heated evenly, the efficiency of heat - melting the raw materials can be improved. At the same time, when the first push plate and the second push plate push the raw materials to move, the raw materials can flow, so that the raw materials are mixed with each other, further improving the uniformity of raw material heating.

[0034] 3. In the horizontal double - stirring melting reactor of the present invention, after adding a horizontal melting kettle in the original decolorization and recrystallization process, the melting and heat - preservation operations are carried out in the horizontal melting kettle, and the decolorization operation is separately completed by the decolorization reactor. In this way, the melting and heat - preservation operations and the decolorization operation are carried out separately, saving operation time in the process and reducing the operation intensity of the original decolorization reactor, enabling it to specifically carry out the decolorization operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Figure 1 is a three - dimensional view of the horizontal double - stirring melting reactor of the present invention;

[0037] Figure 2 is the separated structural diagram of the horizontal double - stirring melting reactor of the present invention;

[0038] Figure 3 is the present invention Figure 2 partial enlarged view at A in;

[0039] Figure 4 is the structural diagram of the diversion mechanism in the present invention;

[0040] Figure 5 is the top view of the horizontal double - stirring melting reactor of the present invention;

[0041] Figure 6 is a cross-sectional view taken along line B-B of the present invention Figure 5 in the present invention;

[0042] Figure 7 is a partial enlarged view at position C of the present invention Figure 6 in the present invention;

[0043] Figure 8 is a cross-sectional view taken along line D-D of the present invention Figure 6 in the present invention;

[0044] Figure 9 is a partial enlarged view at position E of the present invention Figure 8 in the present invention;

[0045] Figure 10 is a partial enlarged view at position F of the present invention Figure 8 in the present invention.

[0046] In the figure: 1. Kettle body; 11. Jacket; 12. Steam inlet; 13. Annular plate; 14. Partition plate; 15. Inner cavity; 16. Outer cavity; 17. Arc-shaped partition; 18. Sealing plate; 19. Air hole; 191. Air groove; 192. Steam outlet; 2. Feeding port; 21. Inlet port; 22. Discharge port; 23. Stirring paddle; 24. Stirring blade; 3. Limiting plate; 31. Turntable; 32. First push plate; 33. Rotating rod; 34. Second push plate; 35. Baffle; 36. Arc surface; 37. Inclined block; 38. Static flow inclined surface structure. Detailed implementation manners

[0047] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0048] Embodiment 1: As shown in Figures 1 to 10 , the present invention discloses a horizontal double-stirring melting reactor, including a kettle body 1; the middle of the kettle body 1 is cylindrical, and the end caps on both sides are semi-circular;

[0049] The outer surface of the kettle body 1 is provided with a jacket 11, and the height of the jacket 11 is lower than that of the kettle body 1; an air cavity is provided between the jacket 11 and the kettle body 1; steam inlets 12 are installed on both sides of the jacket 11;

[0050] A steam distribution mechanism is installed in the jacket 11; the steam distribution mechanism includes an annular plate 13; at the middle position of the jacket 11, the annular plate 13 is fixedly connected in the air cavity, and the annular plate 13 divides the air cavity into a left cavity and a right cavity; the left cavity and the right cavity have the same structure and are mirror-symmetrically arranged;

[0051] A partition plate 14 is fixedly connected between the kettle body 1 and the jacket 11, and the partition plate 14 is parallel to the outer contour of the kettle body 1 and the inner contour of the jacket 11; one side of the partition plate 14 close to the annular plate 13 is fixedly connected to the annular plate 13;

[0052] The partition plate 14 divides both the left chamber and the right chamber into an inner chamber 15 and an outer chamber 16; the inner chamber 15 and the outer chamber 16 are not connected; a plurality of evenly arranged arc-shaped partition plates 17 are fixedly connected to the side of the partition plate 14 facing the kettle body 1, and the plurality of arc-shaped partition plates 17 also divide the inner chamber 15 into a plurality of chambers;

[0053] Two sealing plates 18 are fixedly connected to the side of the partition plate 14 facing the jacket 11; a plurality of evenly arranged air holes 19 are opened in the inner wall of the partition plate 14, and the air holes 19 are all located between the two sealing plates 18, and an intelligent pneumatic regulating valve is installed in the air holes 19; the air holes 19 are located between two adjacent arc-shaped partition plates 17; the steam inlet 12 is located between the two sealing plates 18;

[0054] Air grooves 191 are opened in the partition plate 14 on both sides of the arc-shaped partition plate 17, and the air grooves 191 are communicated with the outer chamber 16; a steam outlet 192 is installed at the bottom of the outer chamber 16;

[0055] In this embodiment, a feeding port 2 is installed on the top of the kettle body 1; a feeding port 21 is installed on the right side of the feeding port 2; a temperature measuring port is provided on the feeding port 21;

[0056] A discharging port 22 is installed at the bottom of the jacket 11, and the discharging port 22 passes through the jacket 11 and is communicated with the inner cavity of the kettle body 1; bases are installed on both sides of the bottom of the jacket 11;

[0057] A sight glass port is provided at a position on the top surface of the kettle body 1 close to the feeding port 2;

[0058] Mounting brackets are installed on both sides of the feeding port 2; first motors are installed on the mounting brackets; a driving shaft is installed on the first motor, and the driving shaft extends into the kettle body 1;

[0059] A stirring paddle 23 is installed on one side of the driving shaft inside the kettle body 1;

[0060] Specifically, when melting the raw materials, first put the solid raw materials and the solvent into the kettle body 1 through the feeding port 2 and the feeding port 21 respectively, and at the same time, introduce high-temperature steam from the steam inlet 12, and control the first motor to drive the stirring paddle 23 to rotate. The rotating stirring paddle 23 will turn and stir the raw materials, so that the raw materials can exchange heat with the heat carried by the steam flowing through the jacket 11, thereby melting the raw materials;

[0061] More specifically, since the steam inlet is in communication with the outer chamber 16, steam will enter the space between the two sealing plates 18. As the steam in the space between the two sealing plates 18 gradually increases, the air pressure of the steam gradually increases. Since intelligent pneumatic control valves are installed in the air holes 19 on the partition plate 14, when the steam reaches a certain pressure, the steam will enter the inner chamber 15 through the intelligent pneumatic control valves in multiple air holes 19 at the same time. Since the multiple arc-shaped partition plates 17 in the inner chamber 15 divide the inner chamber 15 into multiple chambers, the steam entering the inner chamber 15 will enter the space between two adjacent arc-shaped partition plates 17 respectively, and then heat-melt the kettle body 1 and the raw materials inside. As the steam entering the space between two adjacent arc-shaped partition plates 17 gradually increases, the steam filling the space between two adjacent arc-shaped partition plates 17 will flow into the outer chamber 16 through the air grooves 191. Since the steam outlet 192 is in communication with the outer chamber 16, the steam will flow out through the steam outlet 192, and heat-melt the raw materials in this cycle. After the raw materials are heat-melted, they are first kept warm for a certain period of time to form a molten liquid mixture, and then subsequent work is carried out;

[0062] Furthermore, by first gathering the steam between the two sealing plates 18 and then passing the steam into the space between two adjacent arc-shaped partition plates 17 through the air holes 19, the steam located between the arc-shaped partition plates 17 can heat-melt the raw materials at different positions. At the same time, the stirring paddle 23 is used to stir the raw materials, so that the raw materials exchange heat with the flowing steam, thereby heat-melting the raw materials. In this process, the steam can be made to flow only between two adjacent arc-shaped partition plates 17, thereby reducing the flow distance of the steam, enabling the raw materials in the kettle body 1 to exchange heat with the steam between the two opposite arc-shaped partition plates 17, and thus improving the situation of uneven heating of the raw materials.

[0063] Embodiment 2: A diversion mechanism is provided in the kettle body 1; the diversion mechanism includes a limiting plate 3; the cross-section of the limiting plate 3 is arc-shaped and is parallel to the contour of the bottom of the inner cavity of the kettle body 1; there is a distance between the limiting plate 3 and the inner cavity of the kettle body 1; both sides of the limiting plate 3 extend to the two end covers respectively and are fixedly connected to the end covers;

[0064] A turntable 31 is rotatably connected to the middle of the limiting plate 3, and the diameter of the turntable 31 is the same as the outer diameter of the limiting plate 3; uniformly arranged first push plates 32 are fixedly connected to the outer surface of the turntable 31; the height of the first push plates 32 is the same as the distance between the limiting plate 3 and the inner cavity of the kettle body 1; when the first push plates 32 rotate with the turntable 31, they will rotate along the outer surface of the limiting plate 3 and the inner surface of the kettle body 1;

[0065] A rotating rod 33 is fixedly installed in the middle of the turntable 31, and the rotating rod 33 extends to the outside of the jacket 11 and is driven by a second motor; the rotating rod 33 is arranged staggeredly with the drive shaft; the stirring paddle 23 and the first push plate 32 do not interfere with each other;

[0066] In this embodiment, the same number of second push plates 34 are arranged on both end faces of the turntable 31; the number of the second push plates 34 is the same as that of the first push plates 32 and they correspond one by one; the second push plates 34 and the stirring paddles 23 do not interfere with each other;

[0067] Specifically, when melting the raw materials, control the second motor to rotate. The second motor will drive the turntable 31 to rotate clockwise. Since the turntable 31 rotates at the middle position of the limiting plate 3, the turntable 31 will rotate in the middle of the limiting plate 3. At the same time, since the first push plates 32 are fixedly connected to the turntable 31, the rotating turntable 31 will drive a plurality of first push plates 32 to rotate along the inner cavity of the kettle body 1, and at the same time will push the raw materials in the kettle body 1 to rotate. During the rotation of each first push plate 32, part of the raw materials will be pushed to move, and at the same time the raw materials will be pushed into the space between the limiting plate 3 and the inner cavity of the kettle body 1. When the raw materials pass through the lower position of the limiting plate 3, they can be better heated by the steam. Since there are a plurality of first push plates 32, the raw materials will be cyclically pushed by the first push plates 32 to pass under the limiting plate 3 and be heated by the steam;

[0068] More specifically, since the second push plates 34 are also arranged on both sides of the turntable 31 and the second push plates 34 correspond to the first push plates 32 one by one, when the turntable 31 rotates, it will drive the second push plates 34 to rotate along the upper surface of the limiting plate 3, so as to push the raw materials on the upper surface of the limiting plate 3 to move. When the clockwise rotating first push plate 32 just disengages from the limiting plate 3, at this time the first push plate 32 and the second push plate 34 are aligned with each other and face downward. At this time, the raw materials pushed by the second push plate 34 will be mixed with the raw materials pushed by the first push plate 32. As the first push plate 32 and the second push plate 34 continue to rotate clockwise, the first push plate 32 and the second push plate 34 will gradually become horizontal and then gradually face upward. During the process that the first push plate 32 and the second push plate 34 gradually face upward, the raw materials on the first push plate 32 and the second push plate 34 will flow, so that the raw materials are mixed again. When the first push plate 32 and the second push plate 34 rotate to the vertical direction, the raw materials originally located on the first push plate 32 and the second push plate 34 will fall on the next first push plate 32 and the next second push plate 34 in the clockwise direction. The next first push plate 32 and the next second push plate 34 will gradually face downward, and then the raw materials will be pushed to the lower part of the limiting plate 3 again, and so on;

[0069] Furthermore, by using the first push plate 32 and the second push plate 34 to push the raw materials to move cyclically along the lower side of the limit plate 3, the raw materials can be heated by steam in batches, so that the raw materials located inside the kettle body 1 can exchange heat with the steam more evenly, making the raw materials receive heat relatively evenly, thus avoiding the situation that some raw materials far from the jacket 11 inside the kettle body 1 cannot be better heat-exchanged by the steam, resulting in uneven heating of the raw materials. When the raw materials are heated evenly, the efficiency of the raw material melting can be improved. At the same time, when the first push plate 32 and the second push plate 34 push the raw materials to move, the raw materials can flow, so that the raw materials are mixed with each other, further improving the uniformity of the raw materials receiving heat.

[0070] Embodiment Three: On one side of the first push plate 32 and the second push plate 34 close to the end cover, a baffle 35 is fixedly connected; the second push plate 34 slides on the turntable 31;

[0071] On one side of the second push plate 34 close to the rotating rod 33, it also slides inside the rotating rod 33 and is connected to the rotating rod 33 through a compression spring;

[0072] On both end parts of the limit plate 3 not facing the end cover, arc surfaces 36 are provided; on one side end part of the second push plate 34 far from the rotating rod 33 is a semi-circular surface;

[0073] Specifically, since a baffle 35 is fixedly connected to one side of the first push plate 32 and the second push plate 34 close to the end cover, the first push plate 32 and the second push plate 34 will drive the baffle 35 to rotate. When the first push plate 32 and the second push plate 34 are rotating, the baffle 35 will restrict the raw materials, thus preventing the raw materials from flowing down from both sides of the first push plate 32 and the second push plate 34;

[0074] More specifically, since the second push plate 34 slides on the turntable 31 and the rotating rod 33, when the second push plate 34 contacts the limit plate 3, the semi-circular surface on the second push plate 34 will contact the arc surface 36 on the limit plate 3. Then the second push plate 34 will rotate along the arc surface 36. Under the obstruction of the arc surface 36, the second push plate 34 will be pushed to move towards the inner side of the rotating rod 33 and compress the compression spring. When the second push plate 34 gradually disengages from the limit plate 3, the second push plate 34 will move along the arc surface 36 on the other side of the limit plate 3. When the second push plate 34 completely disengages from the arc surface 36, at this time, under the extrusion of the spring, the second push plate 34 will move towards the first push plate 32 side and fit with the first push plate 32. During this process, it can be avoided that there is a gap between the first push plate 32 and the second push plate 34.

[0075] Embodiment Four: The drive shaft extends below the limit plate 3; on one side of the drive shaft extending below the limit plate 3, a stirring blade 24 is fixedly connected, and the stirring blade 24 does not interfere with the first push plate 32;

[0076] In this embodiment, inclined blocks 37 are fixedly connected to one side of the top of the limiting plate 3 near both end caps;

[0077] In this embodiment, a static flow inclined surface structure 38 is provided at the bottom of the inner cavity of the kettle body 1;

[0078] Specifically, since the stirring blades 24 are provided below the limiting plate 3, the drive shaft will drive the stirring blades 24 to rotate. The rotating stirring blades 24 will push the raw materials towards the middle position of the limiting plate 3 and then be pushed away by the first push plate 32, thereby preventing some raw materials from accumulating on both sides of the limiting plate 3;

[0079] More specifically, since inclined blocks 37 are fixedly connected to both sides of the top of the limiting plate 3, when the raw materials fall on both sides, the raw materials will fall above the inclined blocks 37, and then the raw materials will flow along the inclined blocks 37 towards the middle of the limiting plate 3, thereby preventing the raw materials from accumulating on both sides of the limiting plate 3. Since the static flow inclined surface structure 38 is provided at the bottom of the kettle body 1, when the raw materials are fed, the accumulation of materials in the kettle body 1 can be avoided.

[0080] As an implementation method during the actual construction of the present invention, the existing decolorization and recrystallization process mainly consists of equipment such as 2 decolorization reaction kettles, 4 recrystallization kettles, and 2 horizontal recrystallization centrifuges; solid raw materials and solvents are first put into 2 decolorization reaction kettles for melting reaction. The solid raw materials and solvents are melted into a liquid mixture integrated under the heating of saturated steam. After maintaining the temperature for a certain period of time, the liquid mixed raw materials are continuously circulated through an activated carbon filter tank, a filter element filter, and the decolorization reaction kettle by a magnetic pump to filter impurities; when the liquid mixed raw materials reach a certain purity, the circulation is stopped and the high-purity liquid mixed raw materials in the 2 decolorization reaction kettles are discharged into 4 recrystallization kettles for recrystallization reaction. The mixed raw materials after the recrystallization reaction are put into 2 horizontal recrystallization centrifuges for centrifugation operation to obtain the product;

[0081] In the existing decolorization and secondary recrystallization process, melting and decolorization are both carried out in 2 decolorization reaction kettles, that is, solid raw materials and solvents are first put into 2 decolorization reaction kettles for heating and melting operation, heat preservation operation, and decolorization operation in sequence; the main disadvantage of this process is that melting, heat preservation, and decolorization operations are carried out in the same reaction kettle, resulting in a longer process reaction time for the decolorization and recrystallization process and having a certain impact on the finished product output.

[0082] In the process reaction of the original decolorization and recrystallization reaction process, a horizontal double-stirring melting reaction kettle is newly added, and the horizontal double-stirring melting reaction kettle is placed diagonally above two decolorization reaction kettles; in the process flow, solid raw materials and solvents are first put into the newly added horizontal double-stirring melting reaction kettle for melting reaction. After the melting reaction is completed, the liquid mixture is then put into the two decolorization reaction kettles, and under the action of the magnetic pump power, the decolorization process is carried out among the activated carbon filter tank, the filter element filter and the decolorization reaction kettle. The subsequent process steps are the same as the original process steps;

[0083] Therefore, after adding a horizontal melting kettle in the original decolorization and recrystallization process, the melting and heat preservation operations are carried out in the horizontal melting kettle, and the decolorization operation is completed separately by the decolorization reaction kettle. In this way, the melting and heat preservation operations and the decolorization operation are carried out separately, which saves operation time in the process and reduces the operation intensity of the original decolorization reaction kettle, enabling it to specifically carry out the decolorization operation;

[0084] In addition, using one horizontal melting kettle for melting and heat preservation operations can also reduce the operation intensity of workshop workers for putting solid raw materials (originally, it was necessary to feed materials into two reaction kettles respectively);

[0085] By adding a horizontal double-stirring melting reaction kettle in the decolorization and recrystallization section, the process reaction time of the original decolorization and recrystallization reaction process is shortened. The overall time of one-time feeding reaction can be shortened by about 2 hours compared with the original process. Calculated based on feeding and reacting 3 times in 24 hours, 6 hours of process reaction time can be saved every day, that is, the finished product output can be increased by 6 hours every day, which is 1 ton of products; in addition, the newly added horizontal melting kettle is dedicated to the melting reaction process, which indirectly improves the service life of other reaction kettle equipment in the decolorization and secondary recrystallization process. Moreover, the horizontal double-stirring device combined with the baffle design makes the melting process of solid raw materials and solvents shorter and the melting effect more sufficient.

[0086] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. Horizontal double-stirring melting reactor, characterized in that, It includes a kettle body (1); a jacket (11) is arranged on the outer surface of the kettle body (1); there is an air cavity between the jacket (11) and the kettle body (1); steam inlets (12) are installed on both sides of the jacket (11). A steam distribution mechanism is installed in the jacket (11); the steam distribution mechanism includes an annular plate (13); at the middle position of the jacket (11), the annular plate (13) is fixedly connected in the air cavity, and the annular plate (13) divides the air cavity into a left chamber and a right chamber. A partition plate (14) is fixedly connected between the kettle body (1) and the jacket (11). The partition plate (14) divides both the left chamber and the right chamber into an inner chamber (15) and an outer chamber (16); on the side of the partition plate (14) facing the kettle body (1), a plurality of evenly arranged arc-shaped partition plates (17) are fixedly connected. On the side of the partition plate (14) facing the jacket (11), two sealing plates (18) are fixedly connected; evenly arranged air holes (19) are opened in the inner wall of the partition plate (14), and the air holes (19) are all located between the two sealing plates (18), and intelligent pneumatic regulating valves are installed in the air holes (19); the air holes (19) are located between two adjacent arc-shaped partition plates (17); the steam inlet (12) is located between the two sealing plates (18). Air grooves (191) are opened on the partition plate (14) on both sides of the arc-shaped partition plate (17), and the air grooves (191) communicate with the outer chamber (16); a steam outlet (192) is installed at the bottom of the outer chamber (16). A flow guiding mechanism is arranged in the kettle body (1); the flow guiding mechanism includes a limiting plate (3); a turntable (31) is rotatably connected to the middle of the limiting plate (3), and a plurality of evenly arranged first push plates (32) are fixedly connected to the outer circumferential surface of the turntable (31); the same number of second push plates (34) are arranged on both end faces of the turntable (31); the second push plates (34) slide on the turntable (31).

2. The horizontal double-stirring melting reactor according to claim 1, wherein: A feeding port (2) is installed at the top of the kettle body (1); a feeding inlet (21) is installed on the right side of the feeding port (2); a temperature measuring port is arranged on the feeding inlet (21). A discharging port (22) is installed at the bottom of the jacket (11), and the discharging port (22) passes through the jacket (11) and communicates with the inner cavity of the kettle body (1); bases are installed on both sides at the bottom of the jacket (11). A sight glass port is arranged at the position on the top surface of the kettle body (1) close to the feeding port (2). Mounting frames are installed on both sides of the feeding port (2); first motors are installed on the mounting frames; a driving shaft is installed on the first motor, and the driving shaft extends into the kettle body (1). A stirring paddle (23) is installed on one side of the driving shaft inside the kettle body (1).

3. The horizontal double-stirring melting reactor according to claim 2, wherein: The cross section of the limiting plate (3) is arc-shaped and is parallel to the contour of the bottom of the inner cavity of the kettle body (1); there is a distance between the limiting plate (3) and the inner cavity of the kettle body (1); both sides of the limiting plate (3) extend to both end covers respectively and are fixedly connected to the end covers. Moreover, the diameter of the turntable (31) is the same as the outer diameter of the limit plate (3); the height of the first push plate (32) is the same as the distance from the limit plate (3) to the inner cavity of the kettle body (1); when the first push plate (32) rotates following the turntable (31), it will rotate while fitting the outer surface of the limit plate (3) and the inner surface of the kettle body (1). A rotating rod (33) is fixedly installed in the middle of the turntable (31), and the rotating rod (33) extends to the outside of the jacket (11) and is driven by a second motor; the rotating rod (33) is arranged in a staggered manner with the drive shaft; the stirring paddle (23) does not interfere with the first push plate (32).

4. The horizontal double-stirring melting reactor according to claim 3, characterized in that: The number of the second push plates (34) is the same as that of the first push plates (32) and they correspond one by one; the second push plates (34) do not interfere with the stirring paddles (23).

5. The horizontal double-stirring melting reactor according to claim 4, characterized in that: Baffles (35) are fixedly connected to one side of the first push plate (32) and the second push plate (34) close to the end cover.

6. The horizontal double-stirring melting reactor according to claim 5, characterized in that: One side of the second push plate (34) close to the rotating rod (33) also slides inside the rotating rod (33) and is connected to the rotating rod (33) through a compression spring. Arc surfaces (36) are provided at both end parts of the limit plate (3) not facing the end cover; the end part of one side of the second push plate (34) away from the rotating rod (33) is a semi-circular surface.

7. The horizontal double-stirring melting reactor according to claim 6, characterized in that: The drive shaft extends below the limit plate (3). A stirring blade (24) is fixedly connected to one side of the drive shaft extending below the limit plate (3), and the stirring blade (24) does not interfere with the first rotating plate.

8. The horizontal double-stirring melting reactor according to claim 7, characterized in that: Inclined blocks (37) are fixedly connected to one side of the top of the limit plate (3) close to both end covers.

9. The horizontal double-stirring melting reactor according to claim 8, characterized in that: A static flow inclined surface structure (38) is provided at the bottom of the inner cavity of the kettle body (1).

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