Diethyltoluenediamine purification device for screening impurities

Abstract

The utility model discloses a diethyltoluenediamine purification device for screening impurities, and relates to the field of purification of diethyltoluenediamine. The diethyl toluenediamine purification device capable of screening impurities comprises a double-end evaporation purifier and a filtering and impurity removing part connected to the double-end evaporation purifier, and the double-end evaporation purifier comprises a U-shaped pipe, an injection pipe, an evaporation steam exhaust pipe, a material pumping pipe, a circulating pump and an annular electric heating evaporation plate. According to the diethyl toluenediamine purification device capable of screening the impurities, a solution and precipitated impurities at the bottom in a U-shaped pipe are pumped upwards through a circulating pump, after impurities are filtered through a filtering and impurity removing part, the solution is pumped upwards and enters two injection pipes through a three-way connector, and then the solution is annularly sprayed to an annular electric heating evaporation plate through a spray head; and the water vapor is upwards discharged into the condensation tank through the evaporation steam discharge pipe, so that the purification of the diethyltoluenediamine is completed, and the synchronous operation of rapid evaporation and impurity removal is realized.

Description

Technical Field

[0001] This utility model relates to the field of diethyltoluenediamine purification technology, specifically a diethyltoluenediamine purification device for screening impurities. Background Technology

[0002] In the purification of diethyltoluene diamine, the mainstream technical solutions include evaporation purification and extraction purification. Evaporation purification has the advantages of high efficiency and low cost, so it is usually chosen as the method unless there are special circumstances.

[0003] When diethyltoluenediamine is produced by catalysis, the solution usually contains some aluminum powder or aluminum-zinc alloy powder, which needs to be sieved during purification. Existing solutions usually require purification and sieving of impurities in two steps, resulting in a complex overall process and high cost. Therefore, a diethyltoluenediamine purification device for sieving impurities is provided. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a diethyltoluenediamine purification device for screening impurities. This solves the problem that when diethyltoluenediamine is produced by catalysis, the solution usually contains some aluminum powder or aluminum-zinc alloy powder, which needs to be screened during purification. Existing solutions usually require purification and screening of impurities in two steps, resulting in a complex overall process and high costs.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a diethyltoluene diamine purification device for screening impurities, comprising a double-headed evaporator and a filter and impurity removal component connected to the double-headed evaporator;

[0006] The dual-head evaporation and purification device includes:

[0007] U-shaped tube;

[0008] The injection pipe extends movably through both ends to the top of the inner ends of the U-shaped pipe;

[0009] Evaporator exhaust pipe, which is installed at the top of both ends of the U-shaped pipe;

[0010] The material extraction tube is fixedly inserted through the bottom of the U-shaped tube;

[0011] A circulating pump is installed between the injection pipe and the extraction pipe;

[0012] An annular electric heating evaporator plate is fixedly installed at the top of the U-shaped tube, with the end of the spray pipe facing the inner wall of the annular electric heating evaporator plate.

[0013] The filter and impurity removal component is installed between the feed pipe and the circulation pump.

[0014] Preferably, the outer surface of the U-shaped tube is provided with a support frame, both ends of the U-shaped tube extend to the top of the support frame, and the bottom end of the U-shaped tube is suspended in the middle of the support frame.

[0015] Preferably, the circulating pump is fixedly installed at the top inside the support frame, and a T-connector is installed between the output end of the circulating pump and the injection pipe.

[0016] Preferably, a condenser is fixedly installed on the top of the filter and impurity removal component, and the end of the evaporator exhaust pipe extends into the condenser.

[0017] Preferably, a sealing plug is installed at the top of the U-shaped tube, and the evaporator exhaust pipe passes through the sealing plug.

[0018] Preferably, a nozzle is fixedly provided at the end of the spray pipe, the nozzle is placed at the center of the annular electric heating evaporation plate, and multiple spray holes are formed on the outer surface of the nozzle in an annular shape.

[0019] Preferably, the filter element includes:

[0020] The filter tube is fixedly installed in the support frame;

[0021] The drain pipe is fixedly installed between the top of the filter tube and the input end of the circulation pump.

[0022] A filter cartridge is movably inserted into a filter tube, and the upper end of the feed tube extends through into the filter cartridge.

[0023] A sealing cap, threadedly connected to the bottom of the filter tube;

[0024] The rubber stopper is fixedly installed in the sealing cover and is movably inserted into the bottom of the filter cartridge.

[0025] This utility model discloses a diethyltoluene diamine purification device for screening impurities, which has the following beneficial effects: the solution and precipitated impurities at the bottom of the U-shaped tube are drawn upward by a circulating pump, and after the impurities are filtered by the filter, the solution is drawn upward and enters two spray pipes through a three-way connector. Then, it is sprayed in a ring onto the annular electric heating evaporation plate through the nozzle to achieve water vapor evaporation. The water vapor is discharged upward through the evaporation exhaust pipe into the condenser, thus completing the purification of diethyltoluene diamine, thereby achieving simultaneous operation of rapid evaporation and impurity removal. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall outer surface structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the overall rear structure of this utility model;

[0029] Figure 3 This is a cross-sectional view of the internal structure of the U-shaped tube of this utility model;

[0030] Figure 4 This is a schematic diagram of the filter and impurity removal component of this utility model.

[0031] In the diagram: 1. Support frame; 2. Double-headed evaporator and purifier; 21. U-shaped tube; 22. Injection pipe; 23. Evaporation exhaust pipe; 24. Condenser; 25. Circulating pump; 26. Material extraction pipe; 27. Annular electric heating evaporator plate; 28. Nozzle; 29. ​​Sealing plug; 210. T-joint; 3. Filter and impurity removal components; 31. Filter tube; 32. Drain pipe; 33. Filter cylinder; 34. Sealing cover; 35. Rubber stopper. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0033] This application provides a diethyltoluenediamine purification device for screening impurities, which solves the problem that when diethyltoluenediamine is produced by catalysis, the solution usually contains some aluminum powder or aluminum-zinc alloy powder, which needs to be screened during purification. Existing solutions usually require purification and screening of impurities in two steps, resulting in a complex overall process and high cost.

[0034] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0035] This utility model discloses a diethyltoluene diamine purification device for screening impurities.

[0036] Example 1

[0037] According to the appendix Figure 1-4 As shown, it includes a double-headed evaporator 2 and a filter and impurity removal component 3 connected to the double-headed evaporator 2;

[0038] The dual-head evaporation and purification unit 2 includes:

[0039] U-shaped tube 21;

[0040] The injection pipe 22 extends movably through both ends to the top of both ends of the U-shaped pipe 21;

[0041] Evaporation exhaust pipe 23 is installed at the top of both ends of U-shaped pipe 21;

[0042] The material extraction tube 26 is fixedly inserted through the bottom of the U-shaped tube 21;

[0043] A circulating pump 25 is installed between the injection pipe 22 and the extraction pipe 26;

[0044] An annular electric heating evaporator plate 27 is fixedly installed inside the top of the U-shaped tube 21, and the end of the spray pipe 22 faces the inner wall of the annular electric heating evaporator plate 27.

[0045] The filter and impurity removal component 3 is installed between the feed pipe 26 and the circulation pump 25.

[0046] A support frame 1 is provided on the outer surface of the U-shaped tube 21. Both ends of the U-shaped tube 21 extend to the top of the support frame 1, and the bottom end of the U-shaped tube 21 is suspended in the middle of the support frame 1.

[0047] The circulating pump 25 is fixedly installed at the top of the support frame 1, and a three-way connector 210 is installed between the output end of the circulating pump 25 and the injection pipe 22.

[0048] A condenser tank 24 is fixedly installed on the top of the filter and impurity removal component 3, and the end of the evaporator exhaust pipe 23 extends into the condenser tank 24.

[0049] A sealing plug 29 is installed at the top of the U-shaped tube 21, and the evaporator exhaust pipe 23 passes through the sealing plug 29.

[0050] A nozzle 28 is fixedly installed at the end of the spray pipe 22. The nozzle 28 is located at the center of the annular electric heating evaporation plate 27, and multiple spray holes are opened in the annular shape on the outer surface of the nozzle 28.

[0051] In this embodiment, the solution and precipitated impurities at the bottom of the U-shaped tube 21 are drawn upward by the circulating pump 25. After the impurities are filtered by the filter and impurity removal component 3, the solution is drawn upward through the three-way connector 210 into the two spray pipes 22. Then, it is sprayed in a ring onto the annular electric heating evaporation plate 27 through the nozzle 28 to achieve water vapor evaporation. The water vapor is discharged upward through the evaporation exhaust pipe 23 into the condenser 24 to complete the purification of diethyltoluene diamine, thereby achieving simultaneous rapid evaporation and impurity removal.

[0052] Example 2

[0053] See attached document Figure 1-4 More specifically, based on Example 1, the following is also relevant:

[0054] Filtering and impurity removal component 3 includes;

[0055] The filter tube 31 is fixedly installed in the support frame 1;

[0056] The drain pipe 32 is fixedly installed between the top end of the filter pipe 31 and the input end of the circulation pump 25.

[0057] The filter cartridge 33 is movably inserted into the filter tube 31, and the upper end of the feed tube 26 extends through into the filter cartridge 33.

[0058] The sealing cap 34 is threadedly connected to the bottom of the filter tube 31;

[0059] The rubber stopper 35 is fixedly installed in the sealing cover 34, and the rubber stopper 35 is movably inserted into the inner bottom of the filter cylinder 33.

[0060] In this embodiment, when the circulation pump 25 is started, the impurities and solution at the bottom of the U-shaped tube 21 are drawn upward through the suction pipe 26 into the filter cylinder 33. Then, the filter cylinder 33 blocks the impurities, and the solution passes through the filter cylinder 33 and is discharged upward through the drain pipe 32, thereby achieving impurity removal. After use, the impurities inside the filter cylinder 33 can be cleaned by unscrewing the sealing cap 34.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for purifying diethyltoluenediamine by screening impurities, characterized in that, The double-end evaporation purifier (2) and the filtering and impurity removing device (3) connected to the double-end evaporation purifier (2) are included. The double-end evaporation purifier (2) includes a U-shaped tube (21); a jet tube (22) which is movably penetrated into the top of the U-shaped tube (21) at both ends; an evaporation exhaust pipe (23) which is installed on the top of the U-shaped tube (21) at both ends; a material suction pipe (26) which is fixedly penetrated into the bottom of the U-shaped tube (21); a circulating pump (25) which is installed between the jet tube (22) and the material suction pipe (26); a ring-shaped electric heating evaporation plate (27) which is fixedly arranged on the top of the U-shaped tube (21), and the end of the jet tube (22) is opposite to the inner wall of the ring-shaped electric heating evaporation plate (27); The filtering and impurity removing device (3) is installed between the material suction pipe (26) and the circulating pump (25).

2. A device for purifying diethyltoluene diamine from impurities by screening, according to claim 1, characterized in that: The outer surface of the U-shaped tube (21) is provided with a support frame (1), both ends of the U-shaped tube (21) are penetrated into the top of the support frame (1), and the bottom end of the U-shaped tube (21) is suspended and arranged in the middle of the support frame (1).

3. A device for purifying diethyltoluene diamine from impurities by screening, according to claim 2, characterized in that: The circulating pump (25) is fixedly arranged on the top of the support frame (1), and a three-way joint (210) is installed between the output end of the circulating pump (25) and the jet tube (22).

4. A device for purifying diethyltoluene diamine from impurities by screening, according to claim 3, characterized in that: A condenser (24) is fixedly installed on the top of the filtering and impurity removing device (3), and the end of the evaporation exhaust pipe (23) extends into the condenser (24).

5. A device for purifying diethyltoluene diamine from impurities by screening, as claimed in claim 1, wherein: A sealing plug (29) is installed on the top of the U-shaped tube (21), and the evaporation exhaust pipe (23) is penetrated through the sealing plug (29).

6. A device for purifying diethyltoluene diamine from impurities by screening, as claimed in claim 1, wherein: A nozzle (28) is fixedly arranged on the end of the jet tube (22), the nozzle (28) is arranged at the center of the ring-shaped electric heating evaporation plate (27), and a plurality of spray holes are annularly formed on the outer surface of the nozzle (28).

7. A device for purifying diethyltoluene diamine from impurities by screening, as claimed in claim 2, wherein: The filtering and impurity removing device (3) includes a filtering tube (31) which is fixedly arranged in the support frame (1); a liquid discharge pipe (32) which is fixedly arranged between the top end of the filtering tube (31) and the input end of the circulating pump (25); a filtering cartridge (33) which is movably inserted into the filtering tube (31), and the upper end of the material suction pipe (26) is penetrated and extended into the filtering cartridge (33); a sealing cover (34) which is threadedly connected to the bottom of the filtering tube (31); a rubber plug (35) which is fixedly arranged in the sealing cover (34) and movably inserted into the bottom of the filtering cartridge (33).

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