Mixed butyraldehyde separation equipment

Abstract

The utility model discloses mixed butyraldehyde separation equipment which comprises a distillation tower, a mixed aldehyde feeding hole is formed in one end of the outer side of the distillation tower in a penetrating manner, three ends below the distillation tower are fixedly connected with a bracket, a reboiler is correspondingly arranged at the outer end of the distillation tower, a connecting pipe is arranged in the reboiler in a penetrating manner, and the connecting pipe is fixedly connected with the bracket. According to the invention, the plurality of tower plates are arranged in the distillation tower and are matched with the heating of the reboiler, so that the n-butyraldehyde in the isobutyraldehyde is gradually reduced, and the n-butyraldehyde at the tower top reaches the lowest content of isomer separation in the tower; the isobutyraldehyde can enter the isobutyraldehyde collecting box through the collecting pipe, rapid separation of the mixed butyraldehyde is completed, the circulating assembly is adopted, the isobutyraldehyde can be used as reflux liquid after being condensed, and the separation efficiency of the isobutyraldehyde is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to compound separation technical field, concretely is a mixed butyl aldehyde separation equipment. BACKGROUND

[0002] Isobutyraldehyde is an important organic chemical raw material, colorless liquid at room temperature, flammable, volatile, has strong pungent smell. Isobutyraldehyde derives many fine chemical products, such as: isobutyl alcohol, neopentyl glycol, methyl methacrylate isobutyric acid ester, isobutyronitrile etc. The production of isobutyraldehyde, generally in butanol device adopts propylene, synthesis gas as raw material, with rhodium / triphenyl phosphine complex as catalyst in carbonyl synthesis reactor to generate mixed butyl aldehyde, and the main component of mixed butyl aldehyde is the mass ratio 10:1 of normal, isobutyraldehyde mixture, normal butyl aldehyde boiling point is 74 DEG C, isobutyraldehyde boiling point is 64 DEG C, and boiling point is relatively close, separation is extremely difficult. SUMMARY

[0003] The utility model discloses a mixed butyl aldehyde separation equipment, solves the problem that the normal butyl aldehyde boiling point of prior art mixed butyl aldehyde is 74 DEG C, isobutyraldehyde boiling point is 64 DEG C, boiling point is relatively close, separation is extremely difficult.

[0004] To achieve the above object, provide a kind of mixed butyl aldehyde separation equipment, including distillation column, the outside one end of the distillation column is provided with mixed aldehyde feed inlet, the lower three ends of the distillation column are fixedly connected with support, the outer end of the distillation column is provided with reboiler correspondingly, and the inside of reboiler is provided with connecting pipe, and the other end of the connecting pipe is provided in the inside of distillation column;

[0005] The inside of the distillation column is installed with several trays, and the top of the distillation column is provided with a gas pipe.

[0006] According to the mixed butyl aldehyde separation equipment, the other end of the gas pipe is provided with a reflux tank, and the middle part of the gas pipe is provided with a condenser one.

[0007] According to the mixed butyl aldehyde separation equipment, the gas pipe is provided with an electromagnetic valve one.

[0008] According to the mixed butyl aldehyde separation equipment, the other end of the reflux tank is provided with a reflux pipe, the other end of the reflux pipe is provided in the inside of the distillation column, and the middle part of the reflux pipe is provided with a circulating pump.

[0009] According to the mixed butyl aldehyde separation equipment, the other end of the distillation column is provided with an isobutyraldehyde collection pipe, and the other end of the isobutyraldehyde collection pipe is provided with a collection tank.

[0010] According to the mixed butyl aldehyde separation equipment, the electromagnetic valve two is installed on the isobutyl aldehyde collecting pipe, and the middle part of the isobutyl aldehyde collecting pipe is provided with the condenser two.

[0011] Compared with the prior art, the device has the advantages that:

[0012] 1、The patent sets several trays in the inside of the distillation column, cooperates the heating of the reboiler, the n-butyl aldehyde in the isobutyl aldehyde gradually reduces, the n-butyl aldehyde reaches the lowest content of isomer separation at the top position, the isobutyl aldehyde can enter the collection tank through the collecting pipe, the rapid separation of mixed butyl aldehyde is completed, and the circulation assembly can make the isobutyl aldehyde after condensation be used as reflux liquid, and the separation efficiency is improved.

[0013] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0014] The present application will be further described below in combination with the drawings and embodiments.

[0015] Figure 1 It is a front view of the mixed butyl aldehyde separation equipment of the present application;

[0016] Figure 2 It is a distillation tower sectional view of the mixed butyl aldehyde separation equipment of the present application;

[0017] Figure 3 It is a side view of the mixed butyl aldehyde separation equipment of the present application.

[0018] In the drawings: 1, distillation tower; 2, mixed aldehyde feed inlet; 3, support; 4, circulating pump; 5, reflux tank; 6, reflux pipe; 7, condenser one; 8, gas pipe; 9, electromagnetic valve one; 10, reboiler; 11, connecting pipe; 12, tray; 13, collection tank; 14, condenser two; 15, isobutyl aldehyde collecting pipe; 16, electromagnetic valve two. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0020] Please refer to Figure 1-3The utility model provides a technical scheme: a kind of mixed butyl aldehyde separation equipment, including distillation column 1, the outside one end of distillation column 1 is provided with mixed aldehyde feed inlet 2, by mixed aldehyde feed inlet 2 can be sent into the inside of distillation column 1 to mixed butyl aldehyde, the lower three ends of distillation column 1 are fixedly connected with support 3, and the outer end of distillation column 1 is provided with reboiler 10, and reboiler 10 is provided with connecting pipe 11 in the inside, another end of connecting pipe 11 is provided in the inside of distillation column 1, by installing reboiler 10 can provide heat for distillation column 1;

[0021] The inside of distillation column 1 is installed with several trays 12, the top of distillation column 1 is provided with gas pipe 8, another end of gas pipe 8 is provided with reflux tank 5, the middle part of gas pipe 8 is provided with condenser one 7, and electromagnetic valve one 9 is installed on gas pipe 8, reflux pipe 6 is provided in the inside of distillation column 1 in another end of reflux tank 5, and the middle part of reflux pipe 6 is provided with circulating pump 4, isobutyl aldehyde and n-butyl aldehyde are partially vaporized into the tray 12 of last piece, and mixed butyl aldehyde continues to vaporize on the tray 12 of last piece, while n-butyl aldehyde with high boiling point is condensed by reflux liquid, n-butyl aldehyde and isobutyl aldehyde are vaporized and condensed on tray 12 multiple times, and finally separation is completed in the upper portion of distillation column 1, and isobutyl aldehyde escapes from the top of column, and isobutyl aldehyde gas phase is condensed in condenser one 7 and accumulates in reflux tank 5, and isobutyl aldehyde in reflux tank 5 is returned to the top of reflux tank 5 by circulating pump 4 as reflux, to ensure its condensation effect;

[0022] The outside another end of distillation column 1 is provided with isobutyl aldehyde collecting pipe 15, and another end of isobutyl aldehyde collecting pipe 15 is provided with collecting tank 13. Electromagnetic valve two 16 is installed on isobutyl aldehyde collecting pipe 15, and condenser two 14 is provided in the middle part of isobutyl aldehyde collecting pipe 15, isobutyl aldehyde can be condensed in condenser two 14 by isobutyl aldehyde collecting pipe 15 by opening electromagnetic valve two 16, and finally enters the inside of collecting tank 13, to complete the rapid separation of mixed butyl aldehyde, and n-butyl aldehyde can be discharged through the discharge port at the bottom of distillation column 1, to complete the rapid separation operation of mixed butyl aldehyde.

[0023] Working principle: When in use, the mixed butyraldehyde first enters the distillation tower 1, and isobutyraldehyde and normal butyraldehyde are separated by continuous distillation in the distillation tower 1. The distillation tower 1 is a floating valve distillation tower. The reboiler 10 on the outside can provide heat for the distillation tower 1. The gas and liquid phases on each tray 12 in the tower are in close contact and transfer mass and heat. Part of the isobutyraldehyde and normal butyraldehyde are vaporized and enter the upper tray 12, and the mixed butyraldehyde continues to vaporize on the upper tray 12. At the same time, the normal butyraldehyde with a high boiling point is condensed by the reflux liquid. The normal butyraldehyde and isobutyraldehyde are vaporized and condensed on the tray 12 for many times. Finally, the separation is completed at the upper part of the distillation tower 1, and isobutyraldehyde escapes from the top of the tower. The isobutyraldehyde gas phase is condensed by the condenser 7 and accumulated in the reflux box 5. The isobutyraldehyde in the reflux box 5 is returned to the top of the reflux box 5 by the circulation pump 4 as reflux. When the isobutyraldehyde needs to be collected, the solenoid valve 16 is opened, and the isobutyraldehyde can enter the condenser 14 through the isobutyraldehyde collection pipe 15 to be condensed, and finally enter the interior of the collection box 13, completing the rapid separation of the mixed butyraldehyde, and the normal butyraldehyde can be discharged through the discharge port at the bottom of the distillation tower 1.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A mixed butyraldehyde separation device, comprising a distillation tower (1), characterized in that: A mixed aldehyde feed port (2) is provided through one end of the outer side of the distillation tower (1), and brackets (3) are fixedly connected to the three lower ends of the distillation tower (1). A reboiler (10) is provided at the outer end of the distillation tower (1), and a connecting pipe (11) is provided through the interior of the reboiler (10), and the other end of the connecting pipe (11) is provided through the interior of the distillation tower (1); A plurality of trays (12) are installed inside the distillation tower (1), and an air pipe (8) is provided through the top of the distillation tower (1).

2. A mixed butyraldehyde separation device according to claim 1, characterized in that: A reflux box (5) is provided at the other end of the air pipe (8), and a condenser (7) is provided in the middle of the air pipe (8).

3. A mixed butyraldehyde separation device according to claim 1, characterized in that: A solenoid valve (9) is installed on the air pipe (8).

4. A mixed butyraldehyde separation device according to claim 2, characterized in that: A reflux pipe (6) is provided through the other end of the reflux box (5), the other end of the reflux pipe (6) is provided through the interior of the distillation tower (1), and a circulation pump (4) is provided in the middle of the reflux pipe (6).

5. A mixed butyraldehyde separation device according to claim 1, characterized in that: An isobutyraldehyde collecting pipe (15) is provided through the other end of the outer side of the distillation tower (1), and a collecting box (13) is provided at the other end of the isobutyraldehyde collecting pipe (15).

6. A mixed butyraldehyde separation device according to claim 5, characterized in that: A second electromagnetic valve (16) is installed on the isobutyraldehyde collecting pipe (15), and a second condenser (14) is provided in the middle of the isobutyraldehyde collecting pipe (15).

Images