A kind of 2,6-diethylaniline production equipment and separation process

Abstract

The invention discloses a 2,6-diethylaniline production device and a separation process, and relates to the field of filtering and purifying processing of chemical materials. The device comprises an outer shell, wherein the outer shell has a cylindrical inner cavity, an outer arc surface of the outer shell has a symmetrically positioned liquid inlet and a leakage shell, one end surface of the outer shell is provided with a liquid discharge port, and the leakage shell is connected with a recovery shell; an inner shell is rotatably adapted to the cylindrical inner cavity of the outer shell, the inner portion of the outer shell is provided with a partition, the partition divides the inner portion of the inner shell into an upper cylinder cavity and a lower cylinder cavity, the upper cylinder cavity passes through the liquid discharge port, and two filter elements are symmetrically arranged on the surface of the inner shell from top to bottom. The device alternately filters and separates impurities through two filter elements symmetrically distributed on the surface of the inner shell, and when the filter element is aligned with the leakage shell, the impurities gathered on the outer side of the filter element can be removed in time, and the filter element is kept to always have a high permeability effect, so that the continuous separation of impurities between various processes of 2,6-diethylaniline is satisfied, and the complexity of the production process is reduced.

Description

Technical Field

[0001] The invention relates to the field of filtering, purifying and processing chemical materials, and in particular to 2,6-diethylaniline production equipment and a separation process. Background Art

[0002] 2,6-Diethylaniline is one of the important amine substances and an important organic synthesis intermediate. It is widely used in the synthesis and preparation of pesticides. The preparation of 2,6-diethylaniline requires multiple steps such as catalysis, alkylation, and distillation. The preparation purity of 2,6-diethylaniline directly affects the quality of the subsequent prepared pesticides.

[0003] Impurities such as catalyst residues, reaction by-products, inorganic salts, unreacted raw materials and other insoluble substances are generated in multiple synthesis processes of 2,6-diethylaniline. If the above impurities are not separated and filtered in time, the preparation purity of 2,6-diethylaniline will be reduced. In the traditional preparation process of 2,6-diethylbenzene, the separation and filtration of impurities is achieved through an independent filtration process, while the multiple synthesis links of 2,6-diethylaniline all need to separate impurities, which requires multiple separation and filtration processes. If impurity separation is implemented in the material conduction path between the various synthesis processes of 2,6-diethylaniline, the complexity of the production process will be greatly reduced. Summary of the invention

[0004] In order to make up for the deficiencies of the prior art, the present invention aims to provide a 2,6-diethylaniline production device and separation process, which is used to solve the problem that multiple synthesis steps of 2,6-diethylaniline need to independently set up impurity separation steps, resulting in complicated production process.

[0005] In order to solve the problems of the prior art, the technical solution of the present invention is as follows:

[0006] A 2,6-diethylaniline production device comprises an outer shell, the outer shell has a cylindrical inner cavity, the outer arc surface of the outer shell has a symmetrically positioned liquid inlet and a drain shell, one end surface of the outer shell is provided with a liquid discharge port, and the drain shell is connected to a recovery shell;

[0007] The inner shell is rotatably adapted to the cylindrical inner cavity of the outer shell. The outer shell has a partition inside, which divides the interior of the inner shell into an upper cylindrical cavity and a lower cylindrical cavity. The upper cylindrical cavity passes through the liquid discharge port. Two filter elements are symmetrically arranged on the surface of the inner shell up and down. The two filter elements are respectively aligned with the liquid inlet and the drain shell. The liquid introduced from the liquid inlet passes through the upper filter element and enters the upper cylindrical cavity, and then is discharged from the liquid discharge port.

[0008] The motor is used to drive the inner shell to rotate, so that the two filter elements are replaced and aligned with the liquid inlet and the leakage shell. When the filter element rotates to the position of the leakage shell, it will generate reciprocating vibration along the radial direction of the inner shell.

[0009] Preferably, a pressure sensor is provided inside the liquid inlet, and the pressure sensor is connected to the motor via a controller.

[0010] Preferably, the filter element comprises a filter plate, the surface of the inner shell body has a surface groove, a rib is fixed in the surface groove, a guide column is arranged on the surface of the rib, the filter plate is slidably connected with the guide column via a spring, so that the filter plate can be lifted and moved in the surface groove.

[0011] Preferably, arc blocks are symmetrically fixed at both ends of the filter plate, the arc blocks of the upper filter plate abut against the inner wall of the outer shell so that the filter plate sinks into the surface groove, the inner wall of the outer shell has a clearance groove at both ends of the leak shell, and the arc blocks of the lower filter plate are stuck in the clearance groove, so that the filter plate expands and moves outside the surface groove.

[0012] Preferably, a plurality of arc-shaped protrusions are arranged in the clearance groove.

[0013] Preferably, the lowest position of the clearance groove has a positioning groove adapted to the arc block, and the arc block is inserted into the positioning groove so that the filter plate is flush with the outer surface of the inner shell.

[0014] Preferably, a plurality of rubber scrapers are arranged in the filter shell, and the rubber scrapers are used to scrape the surface of the filter element, and the scraping edges of the rubber scrapers are serrated.

[0015] Preferably, a conversion valve is connected between the liquid inlet and the liquid discharge port, and the conversion valve includes a spherical shell, the spherical shell has a linearly opposed inlet and outlet, the outlet is connected to the liquid inlet, a branch pipe is connected between the spherical shell and the liquid discharge port, the position where the branch pipe connects to the spherical shell is T-shaped with the inlet and the outlet, the spherical shell has a spherical core, the spherical core has a T-shaped channel, and the spherical core is rotated 90° so that the inlet can pass through the T-shaped channel to select one of the outlet or the branch pipe.

[0016] A 2,6-diethylaniline impurity separation process based on the 2,6-diethylaniline production equipment, the specific steps are as follows:

[0017] A. The liquid inlet and the liquid discharge port are respectively connected to the upper and lower processes of 2,6-diethylaniline production;

[0018] B. The processed material enters the outer shell from the liquid inlet, and the impurities in the material are filtered through the upper filter element. The filtered material is introduced into the next process through the upper cylinder cavity and the liquid discharge port in sequence, and the filtered impurities are retained on the outside of the upper filter element;

[0019] C. Turn on the motor to drive the inner shell to rotate 180°, so that the upper and lower filter elements are swapped, and the filter element with impurities rotates downward to the leakage shell, so that the impurities fall into the recovery shell, maintaining the permeability of the filter element;

[0020] D. The filter plate rotates to the bottom and aligns with the drain shell. The arc block is aligned and inserted into the clearance groove, so that the filter plate moves to the outside of the surface groove to push out impurities.

[0021] E. When the filter plate moves toward the outside of the surface groove, the arc block contacts the arc protrusion, causing the filter element to vibrate continuously, promoting impurities on the outside of the filter element to fall into the leak shell.

[0022] Compared with the prior art, the advantages of the present invention are as follows:

[0023] 1. The present invention uses two filter elements symmetrically distributed on the surface of the inner shell to alternately filter and separate impurities. When the filter element is aligned with the shell, the impurities gathered on the outside of the filter element can be removed in time, so that the filter element always has a high permeability effect, which satisfies the continuous separation of impurities between various processes of 2,6-diethylaniline and reduces the complexity of the production process.

[0024] 2. In the process of switching the positions of the two filter elements, the filter element can move in the surface groove by aligning the arc block with the inner wall of the outer shell and the clearance groove. The upper filter element is retracted into the surface groove to reserve a holding space for impurities, and the lower filter element is expanded toward the outside of the surface groove to discharge the filtered impurities. The shaking effect of the filter element facilitates the discharge of all impurities, thereby ensuring that the filter element always maintains good permeability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall external structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the overall section of the present invention.

[0027] Figure 3 It is a schematic diagram of the overall split structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the inner shell structure of the present invention.

[0029] Figure 5 It is a schematic diagram of the filter element distribution structure of the present invention.

[0030] Figure 6 It is a schematic diagram of the arc block alignment and yielding groove structure of the present invention.

[0031] Figure 7 It is a schematic diagram of the structure of the rubber scraper of the present invention.

[0032] Figure 8 It is a schematic diagram of the external structure of the conversion valve of the present invention.

[0033] Fig. 9 This is one of the schematic diagrams of the conduction of the conversion valve of the present invention.

[0034] Fig.10 This is the second schematic diagram of the conduction of the conversion valve of the present invention.

[0035] Figure numerals: 1. outer shell; 11. liquid inlet; 12. liquid discharge port; 13. leakage shell; 14. partition; 2. inner shell; 21. surface groove; 3. filter element; 31. rib plate; 32. guide column; 33. filter plate; 34. arc block; 4. motor; 5. pressure sensor; 6. conversion valve; 61. ball shell; 62. inlet; 63. outlet; 64. branch pipe; 65. wrench; 66. limit piece; 67. ball core; 68. T-shaped channel; 7. recovery shell; 8. rubber scraper; 9. make way groove; 91. arc protrusion; 92. positioning groove. DETAILED DESCRIPTION

[0036] 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.

[0037] The 2,6-diethylaniline production equipment is arranged in the material conduction path between the various production processes of 2,6-diethylaniline. The impurities can be filtered and separated during the conduction of raw materials between the upper and lower processes. The specific structure is as follows:

[0038] like Figure 1-5 As shown, the outer shell 1 has a cylindrical inner cavity, the outer arc surface top of the outer shell 1 has a liquid inlet 11, the bottom has a leak shell 13, the liquid inlet 11 and the leak shell 13 are symmetrically distributed up and down, a liquid discharge port 12 is arranged on the right end face of the outer shell 1, the left end face of the outer shell 1 is sealed with an end cover, the inner part of the outer shell 1 has an axially extending partition 14, the partition 14 is fixed to the right end of the outer shell 1, and the upper part of the partition 14 passes through the liquid discharge port 12, and the recovery shell 7 is threadedly connected to the partition 14;

[0039] The inner shell 2 is a cylindrical shape with a single-sided seal. The end cover of the outer shell 1 is opened, and the inner shell 2 is inserted from the left side into the outer shell 1. The inner shell 2 and the cylindrical inner cavity of the outer shell 1 are rotated and adapted. At the same time, the partition 14 is inserted into the inner side of the inner shell 2. The interior of the inner shell 2 is divided into an upper cylinder cavity and a lower cylinder cavity by the partition 14. The upper cylinder cavity passes through the liquid discharge port 12. The end cover is closed, and a motor 4 is installed on the surface of the end cover. The output shaft of the motor 4 is fixedly connected to the inner shell 2. Two filter elements 3 are symmetrically arranged on the surface of the inner shell 2. The two filter elements 3 are respectively aligned with the liquid inlet 11 and the drain shell 13. A pressure sensor 5 is installed on the inner side of the liquid inlet 11. The pressure sensor 5 is connected to the motor 4 through a controller.

[0040] The liquid inlet 11 and the liquid discharge port 12 are respectively connected to the upper and lower processes of 2,6-diethylaniline production. The processed material enters the outer shell 1 through the liquid inlet 11, and the impurities in the material are filtered through the upper filter element 3. The filtered material is sequentially introduced into the next process through the upper cylinder cavity and the liquid discharge port 12. The filtered impurities are retained on the outer side of the upper filter element 3. As the impurities gathered on the outer side of the upper filter element 3 continue to increase, the permeability of the upper filter element 3 gradually decreases, and the pressure at the liquid inlet 11 gradually increases. The pressure change is monitored by the pressure sensor 5. When the pressure reaches the set value, the pressure sensor 5 feeds back information to the controller, so that the motor 4 drives the inner shell 2 to rotate 180°, and the upper and lower filter elements 3 are exchanged. The filter element 3 with impurities rotates downward to the leakage shell 13, so that the impurities fall into the recovery shell 7, the permeability of the filter element 3 is maintained, and the recovery shell 7 is removed regularly to remove the collected impurities.

[0041] like Figure 4-6 As shown, the filter element 3 includes a filter plate 33, a surface groove 21 is provided on the surface of the inner shell 2, a rib plate 31 is fixed in the surface groove 21, a plurality of guide pillars 32 are fixed on the surface of the rib plate 31, the filter plate 33 is placed in the surface groove 21, and the edge of the filter plate 33 is slidably adapted to the surface groove 21, the guide pillars 32 are slidably plugged with the filter plate 33, and the filter plate 33 is pushed by a spring to have a tendency to move toward the outside of the surface groove 21, arc blocks 34 are symmetrically fixed at both ends of the filter plate 33, and the inner wall of the outer shell 1 has a clearance groove 9 for the arc blocks 34 at both ends of the leak shell 13;

[0042] The upper filter plate 33 contacts the inner wall of the outer shell 1 through the arc block 34, so that the filter plate 33 sinks into the surface groove 21, and a space for accommodating impurities is formed at the liquid inlet 11, which is convenient for storing the filtered impurities outside the filter plate 33. When the inner shell 2 rotates to replace the filter plate 33, the filter plate 33 rotates to the lower part and aligns with the drain shell 13, and the arc block 34 is aligned and snapped into the clearance groove 9, so that the filter plate 33 moves to the outside of the surface groove 21, which is used to push the impurities outward and facilitate the impurities to fall into the drain shell 13;

[0043] like Figure 6 As shown, a plurality of arc-shaped protrusions 91 are arranged in the clearance groove 9. When the arc-shaped block 34 is inserted into the clearance groove 9, the arc-shaped block 34 contacts the arc-shaped protrusions 91, so that the filter element 3 is continuously shaken, and the impurities outside the filter element 3 are promoted to fall into the drain shell 13.

[0044] like Figure 6 As shown, the lowest position of the yield groove 9 has a positioning groove 92 adapted to the arc block 34. The arc block 34 is inserted into the positioning groove 92 to make the filter plate 33 flush with the outer surface of the inner shell 2, which is convenient for completely discharging impurities. The arc block 34 is engaged with the positioning groove 92 to locate the rotation angle of the inner shell 2, ensuring that the filter plate 33 is accurately aligned with the leak shell 13.

[0045] like Figure 5 , Figure 7 As shown, a plurality of rubber scrapers 8 are arranged in the filter shell 13. The scraping edges of the rubber scrapers 8 are serrated. The rubber scrapers 8 are used to scrape the surface of the filter plate 33 to peel off impurities tightly adhered to the surface of the filter plate 33 and keep the filter plate 33 highly permeable.

[0046] like Figure 8-10 As shown, a conversion valve 6 is connected between the liquid inlet 11 and the liquid discharge port 12, and the conversion valve 6 includes a ball shell 61, the ball shell 61 has an inlet 62 and an outlet 63 that are linearly aligned, the outlet 63 is connected to the liquid inlet 11, a branch pipe 64 is connected between the ball shell 61 and the liquid discharge port 12, and the position where the branch pipe 64 connects the ball shell 61 is T-shaped with the inlet 62 and the outlet 63, a ball core 67 is provided inside the ball shell 61, and the ball core 67 has a T-shaped channel 68, a wrench 65 connected to the ball core 67 is provided outside the ball shell 61, and two limit members 66 that limit the wrench 65 to rotate only 90° are provided;

[0047] The ball core 67 is rotated 90° by the wrench 65, so that the inlet 62 can pass through the T-shaped channel 68 to select one of the outlet 63 or the branch pipe 64. When it is necessary to separate impurities from the material conducted between processes, the inlet 62 and the outlet 63 are connected. If it is not necessary to separate impurities from the material conducted between processes, the inlet 62 and the branch pipe 64 are connected, so that the material can be directly introduced into the next process through the discharge port 12, thereby reducing the conduction resistance.

[0048] 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 2,6-diethylaniline production equipment, characterized in that, include: An outer shell (1), the outer shell (1) having a cylindrical inner cavity, an outer arc surface of the outer shell (1) having a liquid inlet (11) and a drain shell (13) symmetrically located, one end surface of the outer shell (1) being provided with a liquid discharge port (12), and the drain shell (13) being connected to a recovery shell (7); An inner shell (2), the inner shell (2) being rotatably matched with the cylindrical inner cavity of the outer shell (1), the outer shell (1) having a partition (14) inside, the partition (14) dividing the interior of the inner shell (2) into an upper cylindrical cavity and a lower cylindrical cavity, the upper cylindrical cavity passing through the liquid discharge port (12), two filter elements (3) being symmetrically arranged on the upper and lower surfaces of the surface of the inner shell (2), the two filter elements (3) being respectively aligned with the liquid inlet (11) and the drain shell (13), the liquid introduced from the liquid inlet (11) passing through the upper filter element (3) and then entering the upper cylindrical cavity, and then discharged from the liquid discharge port (12); A motor (4), the motor (4) is used to drive the inner shell (2) to rotate, so that the two filter elements (3) are replaced with the liquid inlet (11) and the leakage shell (13), and when the filter element (3) rotates to the position of the leakage shell (13), it will generate reciprocating vibration along the radial direction of the inner shell (2); The filter element (3) comprises a filter plate (33), the surface of the inner shell (2) has a surface groove (21), a rib plate (31) is fixed in the surface groove (21), a guide column (32) is arranged on the surface of the rib plate (31), and the filter plate (33) is slidably plugged with the guide column (32) via a spring, so that the filter plate (33) can be lifted and moved in the surface groove (21); The filter plate (33) is symmetrically fixed with arc blocks (34) at both ends thereof, the arc blocks (34) of the upper filter plate (33) abut against the inner wall of the outer shell (1) so that the filter plate (33) sinks into the surface groove (21), the inner wall of the outer shell (1) is provided with clearance grooves (9) at both ends of the drain shell (13), the arc blocks (34) of the lower filter plate (33) are inserted into the clearance grooves (9), so that the filter plate (33) expands and moves outward of the surface groove (21); A plurality of arc-shaped protrusions (91) are arranged in the clearance groove (9).

2. The 2,6-diethylaniline production equipment according to claim 1, characterized in that: A pressure sensor (5) is provided inside the liquid inlet (11), and the pressure sensor (5) is connected to the motor (4) via a controller.

3. The 2,6-diethylaniline production equipment according to claim 1, characterized in that: The lowest position of the clearance groove (9) has a positioning groove (92) adapted to the arc block (34), and the arc block (34) is inserted into the positioning groove (92) so that the filter plate (33) is flush with the outer surface of the inner shell (2).

4. The 2,6-diethylaniline production equipment according to claim 1, characterized in that: A plurality of rubber scrapers (8) are arranged in the filter shell (13), and the rubber scrapers (8) are used to scrape the surface of the filter element (3). The scraping edges of the rubber scrapers (8) are serrated.

5. The 2,6-diethylaniline production equipment according to claim 1, characterized in that: A conversion valve (6) is connected between the liquid inlet (11) and the liquid discharge port (12). The conversion valve (6) comprises a spherical shell (61). The spherical shell (61) has an inlet (62) and an outlet (63) which are aligned in a straight line. The outlet (63) is connected to the liquid inlet (11). A branch pipe (64) is connected between the spherical shell (61) and the liquid discharge port (12). The position where the branch pipe (64) connects to the spherical shell (61) is T-shaped with the inlet (62) and the outlet (63). A spherical core (67) is provided inside the spherical shell (61). The spherical core (67) has a T-shaped channel (68). The spherical core (67) is rotated 90 degrees so that the inlet (62) passes through the T-shaped channel (68) and selects one of the outlet (63) or the branch pipe (64).

6. A 2,6-diethylaniline impurity separation process based on the 2,6-diethylaniline production equipment according to claim 3, characterized in that: The specific steps are as follows: A. The liquid inlet (11) and the liquid outlet (12) are respectively connected to the upper and lower processes of 2,6-diethylaniline production; B. The processed material enters the outer shell (1) through the liquid inlet (11), and the impurities in the material are filtered out by the upper filter element (3). The filtered material is sequentially introduced into the next process through the upper cylinder cavity and the liquid discharge port (12), and the filtered impurities are retained on the outside of the upper filter element (3); C. Turn on the motor (4) to drive the inner housing (2) to rotate 180°, so that the upper and lower filter elements (3) are swapped, and the filter element (3) with impurities rotates downward to the leakage shell (13), so that the impurities fall into the recovery shell (7), thereby maintaining the permeability of the filter element (3); D. The filter plate (33) is rotated to the bottom to align with the drain shell (13), and the arc block (34) is aligned and snapped into the clearance groove (9), so that the filter plate (33) moves to the outside of the surface groove (21) to push out impurities; E. When the filter plate (33) moves toward the outside of the surface groove (21), the arc block (34) abuts against the arc protrusion (91), causing the filter element (3) to vibrate continuously, thereby promoting impurities on the outside of the filter element (3) to fall into the drain shell (13).

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