Azelaic acid distillation extraction process and device

Abstract

The invention relates to the technical field of azelaic acid processing, in particular to an azelaic acid distillation and extraction process and device.The azelaic acid distillation and extraction device comprises a tower body, a heavy phase inlet, a light phase inlet, a first servo motor, a rotating shaft, a rotating disc and a fixing ring, the heavy phase inlet is formed in the upper side of the tower body, and the light phase inlet is formed in the lower side of the tower body; the first servo motor is fixedly installed on the top of the tower body, the rotating shaft is fixedly installed on an output shaft of the first servo motor and located in an inner cavity of the tower body, the rotating disc is fixedly installed on the outer surface of the rotating shaft, the fixing ring is fixedly installed on the surface of an inner cavity of the fixing ring, and the rotating disc and the fixing ring are arranged at equal intervals. According to the azelaic acid distillation extraction process and the azelaic acid distillation extraction device, through the crushing assembly, on one hand, accelerated stirring and mixing can be performed on a liquid phase, the mass transfer efficiency is improved, and on the other hand, azelaic acid can be crushed into finer particles, so that the contact area between a solvent and an azelaic acid crude product can be increased, and the extraction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of azelaic acid processing, and in particular to a process and a device for distilling and extracting azelaic acid. Background Art

[0002] Azelaic acid is an organic compound that appears as white to slightly yellow monoclinic prisms, needle-shaped crystals or powder. It is used as a plasticizer and in alkyd resins, paints and chemical synthesis.

[0003] During the processing of azelaic acid, the crude azelaic acid needs to be extracted. During the extraction, the crude azelaic acid, n-octane and pure water need to be heated and stirred, and then extracted and separated. However, after the extraction is completed, black impurities will precipitate downward between the interface between the upper n-octane layer and the lower azelaic acid aqueous solution, which can easily be mixed into the finished azelaic acid crystallization product and affect its purity. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a nonanedioic acid distillation extraction process and device, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a nonanedioic acid distillation and extraction device, comprising a tower body, a heavy phase inlet, a light phase inlet, a first servo motor, a rotating shaft, a rotating disk and a fixed ring, wherein the heavy phase inlet is located on the upper side of the tower body, and the light phase inlet is located on the lower side of the tower body, the first servo motor is fixedly mounted on the top of the tower body, the rotating shaft is fixedly mounted on the output shaft of the first servo motor and is located in the inner cavity of the tower body, the rotating disk is fixedly mounted on the outer surface of the rotating shaft, the fixed ring is fixedly mounted on the inner cavity surface of the fixed ring, the rotating disk and the fixed ring are equidistantly arranged from each other, a crushing assembly is arranged on the tower body, the crushing assembly comprises a gear ring, the gear ring is movably mounted on the surface of the inner cavity of the tower body, is located on the upper surface of the uppermost fixed ring, and is in movably contact with the fixed ring;

[0006] A gear is meshed on the inner side of the gear ring, and the gear is movably mounted on the upper surface of the uppermost fixed ring, and the number of gears is four, a first bevel gear is fixedly mounted on the top of the gear, a second bevel gear is meshed on one side of the first bevel gear, a first driving arm is fixedly mounted on the middle of the second bevel gear, a second driving arm is movably mounted on one end of the first driving arm away from the second bevel gear, and a bearing frame is movably mounted on one end of the second driving arm away from the first driving arm;

[0007] A first pressing plate is fixedly mounted on one side of the first driving arm, a second pressing plate is fixedly mounted on one side of the second driving arm, a crushing knife is fixedly sleeved on the upper side of the outer surface of the rotating shaft, a second servo motor is fixedly mounted on the middle part of the second bevel gear, and the second servo motor is fixedly mounted on the surface of the tower body, and a sealing ring is provided at the connection between the output end of the second servo motor and the tower body;

[0008] The carrying frame is provided with an impurity removal component, and the impurity removal component is used to improve the extraction effect of azelaic acid.

[0009] Optionally, the impurity removal component includes a filter plate, the filter plate is fixedly mounted on the upper surface of the bearing frame, a fixing plate is fixedly mounted on the inner cavity wall of the tower body, a support column is fixedly mounted on the bottom of the fixing plate, a limit block is fixedly mounted on the bottom of the support column, a return spring is sleeved on the outer circumference of the support column, a power member is movably mounted on the outer surface of the support column, a follower is hinged on one side of the power member, a connecting member is hinged on the side of the follower away from the power member, and a gathering member is fixedly mounted on the bottom of the connecting member;

[0010] A sliding block is fixedly mounted on the bottom of the gathering piece, a sliding groove matched with the sliding block is provided inside the filter plate, and a through groove matched with the limiting block is provided inside the filter plate.

[0011] Optionally, a water cutting piece is fixedly installed at the bottom of the first pressing plate, and the shape of the water cutting piece is triangular. The upper surface of the second pressing plate is detachably connected with cleaning soft bristles, and a cleaning port is opened on the surface of the tower body.

[0012] Optionally, the filter plate is movably mounted on the rotating shaft, the width of the filter groove on the surface of the filter plate is greater than the outer diameter of the clean soft bristles, and when the stroke of the filter plate is at the lowest, the clean soft bristles are in the filter groove of the filter plate.

[0013] Optionally, the diameter of the limit block is greater than the diameter of the support column, one end of the return spring is fixedly connected to the bottom of the fixed plate, and the other end is fixedly connected to the power member.

[0014] Optionally, the sliding block is T-shaped, and the sliding groove is a T-shaped groove.

[0015] Optionally, the gathering piece is in an arc shape, and elastic fabric is provided between two adjacent gathering pieces.

[0016] A nonanedioic acid distillation and extraction process, using the nonanedioic acid distillation and extraction device described above, comprises the following steps:

[0017] S1: First, the solvent and the crude azelaic acid are introduced from the heavy phase inlet and the first servo motor respectively and then sealed, and then the first servo motor is started to drive the rotating shaft to rotate to perform a mixing operation, and the solvent and the crude azelaic acid can be mixed with the rotating disk;

[0018] S2: By starting the second servo motor to rotate forward and reverse, the second bevel gear can be driven to rotate, thereby causing the first drive arm to rotate, driving the second drive arm, and then causing the second pressing plate and the crushing knife to reciprocate up and down to assist in stirring;

[0019] S3: After the extraction is completed and before the liquid is separated, the second servo motor needs to be started to drive the filter plate to rise, so as to filter out impurities and improve the purity of the product.

[0020] The present invention provides a nonanedioic acid distillation extraction process and device, which has the following beneficial effects:

[0021] 1. The azelaic acid distillation and extraction process and device can accelerate the stirring and mixing of the liquid phase through the crushing component to improve the mass transfer efficiency. On the other hand, it can crush the azelaic acid into finer particles, thereby increasing the contact area between the solvent and the crude azelaic acid product and improving the extraction efficiency.

[0022] 2. The azelaic acid distillation extraction process and device can filter out impurities that sink from the phase interface during liquid separation after extraction through an impurity removal component, and can gather impurities filtered on the surface of the filter plate, making it convenient for users to collect impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 3 The structure of the present invention is shown in FIG. Figure 3 ;

[0026] Figure 4 The structure of the present invention is shown in FIG. Figure 4 ;

[0027] Figure 5 This is a schematic diagram of the positional relationship between the crushing component and the impurity removal component of the present invention;

[0028] Figure 6 The specific structure of the crushing assembly of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 7 The specific structure of the crushing assembly of the present invention is shown in FIG. Figure 2 ;

[0030] Figure 8 It is a schematic diagram of the local structure of the impurity removal component of the present invention.

[0031] In the figure: 1. tower body; 11. heavy phase inlet; 12. light phase inlet; 13. first servo motor; 14. rotating shaft; 15. turntable; 16. fixing ring; 2. gear ring; 21. gear; 22. first bevel gear; 23. second bevel gear; 24. first driving arm; 25. second driving arm; 26. bearing frame; 27. first pressure plate; 28. second pressure plate; 29. ​​crushing knife; 210. second servo motor; 3. filter plate; 31. fixing plate; 32. supporting column; 33. limiting block; 34. reset spring; 35. power part; 36. driven part; 37. connecting part; 38. gathering part; 39. sliding block; 310. slide groove; 311. through groove; 4. water cutting part; 41. cleaning soft hair; 42. cleaning port. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Example 1: Please refer to Figures 1 to 7 The present invention provides a technical solution: a nonanedioic acid distillation and extraction device, comprising a tower body 1, a heavy phase inlet 11, a light phase inlet 12, a first servo motor 13, a rotating shaft 14, a rotating disk 15 and a fixed ring 16, wherein the heavy phase inlet 11 is located at the upper side of the tower body 1, and the light phase inlet 12 is located at the lower side of the tower body 1, the first servo motor 13 is fixedly mounted on the top of the tower body 1, the rotating shaft 14 is fixedly mounted on the output shaft of the first servo motor 13, and is located in the inner cavity of the tower body 1, the rotating disk 15 is fixedly mounted on the outer surface of the rotating shaft 14, the fixed ring 16 is fixedly mounted on the inner cavity surface of the fixed ring 16, the rotating disk 15 and the fixed ring 16 are arranged equidistantly from each other, a crushing assembly is arranged on the tower body 1, and the crushing assembly comprises a gear ring 2, the gear ring 2 is movably mounted on the surface of the inner cavity of the tower body 1, is located on the upper surface of the uppermost fixed ring 16, and is in movably contact with the fixed ring 16;

[0034] A gear 21 is meshed on the inner side of the gear ring 2. The gear 21 is movably mounted on the upper surface of the uppermost fixing ring 16. There are four gears 21. A first bevel gear 22 is fixedly mounted on the top of the gear 21. A second bevel gear 23 is meshed on one side of the first bevel gear 22. A first driving arm 24 is fixedly mounted on the middle of the second bevel gear 23. A second driving arm 25 is movably mounted on one end of the first driving arm 24 away from the second bevel gear 23. A bearing frame 26 is movably mounted on one end of the second driving arm 25 away from the first driving arm 24.

[0035] A first pressing plate 27 is fixedly mounted on one side of the first driving arm 24, a second pressing plate 28 is fixedly mounted on one side of the second driving arm 25, a crushing knife 29 is fixedly sleeved on the upper side of the outer surface of the rotating shaft 14, a second servo motor 210 is fixedly mounted on the middle part of a second bevel gear 23, and the second servo motor 210 is fixedly mounted on the surface of the tower body 1, and a sealing ring is provided at the connection between the output end of the second servo motor 210 and the tower body 1;

[0036] The carrying frame 26 is provided with an impurity removal component, which is used to improve the extraction effect of azelaic acid.

[0037] Specifically, when in use, the solvent and the crude azelaic acid product need to be introduced into the heavy phase inlet 11 and the first servo motor 13 respectively, and then sealed. Then, the first servo motor 13 is started to drive the rotating shaft 14 to rotate, so that the rotating shaft 14 drives the rotating disk 15 to rotate, and the fixed ring 16 can be used to make the liquid phase produce a vortex motion, so that the solvent and the crude azelaic acid product are mixed, so as to extract the azelaic acid component in the crude product.

[0038] By starting the second servo motor 210 in forward and reverse reciprocating motion, a second bevel gear 23 can be driven to rotate, so that the second bevel gear 23 drives the first bevel gear 22, and the first bevel gear 22 can drive the gear 21 to rotate, so that the gear 21 drives the ring gear 2, so that the ring gear 2 can drive four gears 21 at the same time, so that the four second bevel gears 23 rotate at the same time and drive the first drive arm 24 at the same time, and the first drive arm 24 drives the second drive arm 25, so that the carrier frame 26 reciprocates up and down;

[0039] When the first driving arm 24 and the second driving arm 25 are driven reciprocatingly, the first pressing plate 27 and the second pressing plate 28 will follow the up and down movement, and when the stroke of the supporting frame 26 drops to the lowest, the first pressing plate 27 and the second pressing plate 28 are in contact with each other. On the one hand, the stirring and mixing of the liquid phase can be accelerated to improve the mass transfer efficiency. When the first pressing plate 27 moves downward, the cleaning port 42 can reduce the resistance encountered by the first pressing plate 27 when it descends. On the other hand, when the first pressing plate 27 and the second pressing plate 28 are in contact with each other, the crude azelaic acid in the liquid phase can be crushed. At the same time, when the first servo motor 13 drives the rotating shaft 14 to rotate, it can drive the crushing knife 29 to rotate, so that the azelaic acid can be crushed into finer particles. In this way, the contact area between the solvent and the crude azelaic acid can be increased, thereby improving the extraction efficiency.

[0040] Example 2: Please refer to Figures 2 to 8The impurity removal component includes a filter plate 3, which is fixedly mounted on the upper surface of the bearing frame 26, a fixed plate 31 is fixedly mounted on the inner cavity wall of the tower body 1, a support column 32 is fixedly mounted on the bottom of the fixed plate 31, a limit block 33 is fixedly mounted on the bottom of the support column 32, a return spring 34 is sleeved on the outer peripheral side of the support column 32, a power member 35 is movably mounted on the outer surface of the support column 32, a follower 36 is hinged on one side of the power member 35, a connecting member 37 is hinged on the side of the follower 36 away from the power member 35, and a gathering member 38 is fixedly mounted on the bottom of the connecting member 37;

[0041] A slider 39 is fixedly mounted on the bottom of the gathering member 38, a slide groove 310 adapted to the slider 39 is provided inside the filter plate 3, and a through groove 311 adapted to the limit block 33 is provided inside the filter plate 3;

[0042] The filter plate 3 is movably mounted on the rotating shaft 14, the width of the filter groove on the surface of the filter plate 3 is greater than the outer diameter of the clean soft hair 41, and when the travel of the filter plate 3 is at the lowest, the clean soft hair 41 is in the filter groove of the filter plate 3;

[0043] The diameter of the limit block 33 is larger than the diameter of the support column 32. One end of the return spring 34 is fixedly connected to the bottom of the fixed plate 31, and the other end is fixedly connected to the power member 35. The slider 39 is T-shaped, the slide groove 310 is a T-shaped groove, the gathering member 38 is arc-shaped, and elastic cloth is arranged between two adjacent gathering members 38.

[0044] On the basis of Example 1, when the extraction is completed and the liquid is separated, black impurities will sink from the phase interface. By slowly starting the second servo motor 210 to drive the second bevel gear 23 to rotate, the bearing frame 26 drives the filter plate 3 to move upward to receive the black impurities, and the filter plate 3 continues to rise to the highest point, which is above the liquid phase, and the purity of the azelaic acid aqueous solution and the purity of the n-octane layer can be improved;

[0045] Furthermore, during the rising process of the filter plate 3, the slider 39 will slide in the slide groove 310 to provide a stroke for the rising of the filter plate 3. When the slider 39 slides, the power member 35 will squeeze the return spring 34 and move upward. At this time, the gathering member 38 will follow the slider 39 to move toward the center of the filter plate 3, so that the impurities filtered on the surface of the filter plate 3 can be gathered, making it convenient for the user to collect the impurities.

[0046] Example 3: Please refer to Figure 6 A water cutter 4 is fixedly installed at the bottom of the first pressing plate 27, and the shape of the water cutter 4 is triangular. A cleaning soft bristle 41 is detachably connected to the upper surface of the second pressing plate 28, and a cleaning port 42 is opened on the surface of the tower body 1.

[0047] On the basis of Example 2, after the impurity filtration is completed and it is allowed to stand for a period of time again, the azelaic acid aqueous solution needs to be discharged from the light phase inlet 12, and the n-octane layer needs to be discharged from the heavy phase inlet 11. It should be noted that when the n-octane layer is discharged, the solution extraction speed should be slow to avoid excessive suction, which causes impurities to pass through the filter plate 3 and enter the n-octane layer again. When all the liquid phase is discharged, it is necessary to heat the inner cavity of the tower body 1 to dry the impurities. After the impurities are dried, the dust collection device needs to be introduced from the cleaning port 42 into the filter plate 3 to collect the impurities gathered there;

[0048] Furthermore, after the impurities are collected, it is necessary to start the second servo motor 210 again to make the filter plate 3 drop to the lowest point of the stroke. At this time, the cleaning soft bristles 41 will extend into the filter slot of the filter plate 3, thereby cleaning the filter slot of the filter plate 3 to avoid impurities in the filter slot, which will affect the purity of the next extraction.

[0049] A nonanedioic acid distillation and extraction process, using the nonanedioic acid distillation and extraction device described above, comprises the following steps:

[0050] S1: First, the solvent and the crude azelaic acid are introduced from the heavy phase inlet 11 and the first servo motor 13 respectively and then sealed, and then the first servo motor 13 is started to drive the rotating shaft 14 to rotate to perform a mixing operation, and the solvent and the crude azelaic acid can be mixed with the rotating disk 15;

[0051] S2: By starting the second servo motor 210 to reciprocate forward and reverse, the second bevel gear 23 can be driven to rotate, thereby rotating the first drive arm 24, driving the second drive arm 25, and then causing the second pressing plate 28 and the crushing knife 29 to reciprocate up and down to assist stirring;

[0052] S3: After the extraction is completed and before the liquid is separated, the second servo motor 210 needs to be started to drive the filter plate 3 to rise, so as to filter out impurities and improve the purity of the product.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nonanedioic acid distillation extraction device, comprising a tower body (1), a heavy phase inlet (11), a light phase inlet (12), a first servo motor (13), a rotating shaft (14), a rotating disk (15) and a fixed ring (16), wherein the heavy phase inlet (11) is located at the upper side of the tower body (1), the light phase inlet (12) is located at the lower side of the tower body (1), the first servo motor (13) is fixedly mounted on the top of the tower body (1), the rotating shaft (14) is fixedly mounted on the output shaft of the first servo motor (13) and is located in the inner cavity of the tower body (1), the rotating disk (15) is fixedly mounted on the outer surface of the rotating shaft (14), the fixed ring (16) is fixedly mounted on the inner cavity surface of the fixed ring (16), the rotating disk (15) and the fixed ring (16) are arranged equidistantly from each other, and characterized in that: The tower body (1) is provided with a crushing assembly, the crushing assembly comprising a gear ring (2), the gear ring (2) being movably mounted on the surface of the inner cavity of the tower body (1), being located on the upper surface of the uppermost fixing ring (16), and being in movably contact with the fixing ring (16); A gear (21) is meshed on the inner side of the gear ring (2), the gear (21) is movably mounted on the upper surface of the uppermost fixing ring (16), and the number of the gears (21) is four; a first bevel gear (22) is fixedly mounted on the top of the gear (21), a second bevel gear (23) is meshed on one side of the first bevel gear (22), a first driving arm (24) is fixedly mounted on the middle of the second bevel gear (23), a second driving arm (25) is movably mounted on one end of the first driving arm (24) away from the second bevel gear (23), and a bearing frame (26) is movably mounted on one end of the second driving arm (25) away from the first driving arm (24); A first pressing plate (27) is fixedly mounted on one side of the first driving arm (24), a second pressing plate (28) is fixedly mounted on one side of the second driving arm (25), a crushing knife (29) is fixedly sleeved on the upper side of the outer surface of the rotating shaft (14), a second servo motor (210) is fixedly mounted on the middle part of the second bevel gear (23), and the second servo motor (210) is fixedly mounted on the surface of the tower body (1), and a sealing ring is provided at the connection between the output end of the second servo motor (210) and the tower body (1); The carrying frame (26) is provided with an impurity removal component, and the impurity removal component is used to improve the extraction effect of azelaic acid.

2. The azelaic acid distillation and extraction device according to claim 1, characterized in that: The impurity removal component comprises a filter plate (3), the filter plate (3) is fixedly mounted on the upper surface of the bearing frame (26), a fixing plate (31) is fixedly mounted on the inner cavity wall of the tower body (1), a support column (32) is fixedly mounted on the bottom of the fixing plate (31), a limit block (33) is fixedly mounted on the bottom of the support column (32), a return spring (34) is sleeved on the outer peripheral side of the support column (32), a power member (35) is movably mounted on the outer surface of the support column (32), a follower (36) is hingedly connected to one side of the power member (35), a connecting member (37) is hingedly connected to the side of the follower (36) away from the power member (35), and a gathering member (38) is fixedly mounted on the bottom of the connecting member (37); A sliding block (39) is fixedly mounted on the bottom of the gathering member (38), a sliding groove (310) adapted to the sliding block (39) is provided inside the filter plate (3), and a through groove (311) adapted to the limiting block (33) is provided inside the filter plate (3).

3. The azelaic acid distillation extraction device according to claim 2, characterized in that: A water cutter (4) is fixedly mounted on the bottom of the first pressing plate (27), and the water cutter (4) is triangular in shape. Cleaning soft bristles (41) are detachably connected to the upper surface of the second pressing plate (28), and a cleaning port (42) is provided on the surface of the tower body (1).

4. The azelaic acid distillation and extraction device according to claim 3, characterized in that: The filter plate (3) is movably mounted on the rotating shaft (14); the width of the filter groove on the surface of the filter plate (3) is greater than the outer diameter of the clean soft bristles (41); and when the travel of the filter plate (3) is at the lowest, the clean soft bristles (41) are located in the filter groove of the filter plate (3).

5. The azelaic acid distillation and extraction device according to claim 4, characterized in that: The diameter of the limit block (33) is greater than the diameter of the support column (32); one end of the return spring (34) is fixedly connected to the bottom of the fixed plate (31), and the other end is fixedly connected to the power member (35).

6. The azelaic acid distillation and extraction device according to claim 5, characterized in that: The sliding block (39) is in a T-shape, and the sliding groove (310) is a T-shaped groove.

7. The azelaic acid distillation and extraction device according to claim 6, characterized in that: The gathering piece (38) is in an arc shape, and elastic fabric is arranged between two adjacent gathering pieces (38).

8. A nonanedioic acid distillation and extraction process, using the nonanedioic acid distillation and extraction device described above, characterized in that: The following steps are involved: S1: First, the solvent and the crude azelaic acid are introduced into the heavy phase inlet (11) and the first servo motor (13) respectively, and then sealed. Then, the first servo motor (13) is started to drive the rotating shaft (14) to rotate to perform a mixing operation. The solvent and the crude azelaic acid can be mixed with the rotating disk (15); S2: By starting the second servo motor (210) to rotate forward and reverse, the second bevel gear (23) can be driven to rotate, thereby causing the first drive arm (24) to rotate, driving the second drive arm (25), and then causing the second pressing plate (28) and the crushing knife (29) to reciprocate up and down to assist in stirring; S3: After the extraction is completed and before the liquid is separated, it is necessary to start the second servo motor (210) to drive the filter plate (3) to rise, so as to filter out impurities and improve the purity of the product.

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