CN212090948U

CN212090948U - Distillation column for producing methyl methacrylate

Info

Publication number: CN212090948U
Application number: CN202020402340.8U
Authority: CN
Inventors: 秦萌; 张雷; 董培学
Original assignee: Shandong Yuetian Chemical Co ltd
Current assignee: Shandong Yuetian Chemical Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-12-08
Anticipated expiration: 2030-03-26

Abstract

The utility model discloses a distillation tower for producing methyl methacrylate, which comprises a distillation tower and an inner shell, wherein a cooling shell is arranged on the outer wall of one side of the distillation tower, an air exhaust fan is arranged on the outer wall of one side of the cooling shell, semiconductor refrigeration sheets are inserted on the outer walls of two ends of the cooling shell, a first connecting pipe is inserted on the outer wall of the bottom of the cooling shell, a first hollow shell is arranged on the other end of the first connecting pipe, a second connecting pipe is inserted on the outer wall of the bottom of the inner shell, a second hollow shell is arranged on the outer wall of the top of the second connecting pipe, and the methyl methacrylate gas can be condensed by the air cooled from the outside through the hollow pipe by arranging an air exhaust pump, the cooling shell, the semiconductor refrigeration sheets, the first connecting pipe, the first hollow shell, the hollow pipe and the second hollow shell, thereby avoiding the methyl methacrylate gas, the condensation efficiency and quality of the methyl methacrylate gas are improved.

Description

Distillation column for producing methyl methacrylate

Technical Field

The utility model relates to a methyl methacrylate production technical field especially relates to a production distillation column for methyl methacrylate.

Background

Methyl methacrylate is an organic compound, is an important chemical raw material, and is a monomer for producing transparent plastic polymethyl methacrylate. The vaporized methyl methacrylate is easy to burn, has strong pungent smell and moderate toxicity, and long-term contact is avoided, a rectifying tower is required to be increased in the methyl methacrylate distillation process, the production cost is increased invisibly, and the vaporized methyl methacrylate rises in the distillation tower body quickly and cannot be separated well.

Through retrieval, the Chinese patent application No. CN208865207U discloses a distillation tower for producing methyl methacrylate, which comprises a tower kettle arranged at one side of a distillation chamber, wherein the tower kettle is communicated with the distillation chamber through a conveying pipe, and the upper side of the distillation chamber is communicated with a tower body; the outer wall of the tower body is sleeved with an outer box body; the distillation chamber is fixed in the bracket. The above-mentioned patent exists following not enough, is equipped with the water pipe between outer box and the body of the tower, only relies on cold water between this to come to cool down the condensation to it, can lead to the condensation effect poor, the people's of not being convenient for use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a distillation tower for producing methyl methacrylate, which can effectively solve the problem provided by the background technology.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a production distillation column for methyl methacrylate, includes distillation column and interior casing, the cooling casing is installed to distillation column one side outer wall, and cools off casing one side outer wall and install the air exhaust fan, and the grafting of cooling casing both ends outer wall has the semiconductor refrigeration piece that the equidistance distributes, it has first connecting pipe to cool off casing bottom outer wall, and first hollow casing is installed to the first connecting pipe other end, interior casing bottom outer wall is pegged graft and is had the second connecting pipe, and second connecting pipe top outer wall installs the hollow casing of second, it has the hollow tube that the equidistance distributes to peg graft at second hollow casing one side outer wall top, and the hollow tube other end extends to treat inside the first hollow casing.

Preferably, the bottom of the outer wall of the other side of the distillation tower is inserted with a water inlet pipe, and the top of the outer wall of one side of the distillation tower is inserted with a water outlet pipe.

Preferably, the outer wall of one end of the distillation tower is provided with a processing shell, and the outer wall of the top of the processing shell is inserted with an air outlet pipe.

Preferably, a sliding groove is formed in one end of the outer wall of the top of the processing shell, an activated carbon adsorption screen plate is inserted into the inner wall of the sliding groove, and air outlets distributed at equal intervals are formed in the outer wall of one end of the processing shell.

Preferably, the outer wall of the bottom of the inner shell is spliced with a liquid outlet pipe, and one end of the outer wall of the bottom of the inner shell is spliced with an air inlet pipe.

Preferably, the same arc-shaped baffle is installed on the inner walls of the two sides of the inner shell, and through holes distributed at equal intervals are inserted into the outer wall of the bottom of the arc-shaped baffle.

Preferably, the outer wall of one side of the first hollow shell opposite to the outer wall of the second hollow shell is rotatably connected with the same rotating shaft, and the outer wall of the circumference of the rotating shaft is provided with dispersion plates distributed at equal intervals.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through being provided with aspiration pump, cooling housing, semiconductor refrigeration piece, first connecting pipe, first hollow casing, hollow tube and the hollow casing of second, can come the condensation to methyl methacrylate gas through the hollow tube with the air after the external cooling, avoid the inside methyl methacrylate gas of interior casing not fully by the condensation, improved methyl methacrylate gas condensation efficiency and quality.

2. Through being provided with the outlet duct, handling casing, active carbon adsorption otter board and venthole, can absorb remaining methyl methacrylate gas, avoid polluting the external air, and active carbon adsorption otter board top is provided with the handle, can conveniently change the active carbon adsorption otter board, makes things convenient for the staff to use.

3. Embodiment 2 is through being provided with rotation axis and dispersion plate, disperses the methyl methacrylate gas that the intake pipe got into, avoids entering the gaseous speed of methyl methacrylate of interior casing too fast and the condensation is insufficient, increases the time of methyl methacrylate condensation, makes the distillation effect better.

Drawings

FIG. 1 is a schematic diagram of a main view structure of a distillation column for producing methyl methacrylate according to the present invention;

FIG. 2 is a schematic sectional view of a distillation column of the distillation column for producing methyl methacrylate according to the present invention;

FIG. 3 is a schematic view of a partial structure of a distillation column for producing methyl methacrylate according to example 2 of the present invention.

In the figure: the device comprises an air outlet pipe 1, a distillation tower 2, an active carbon adsorption screen plate 3, a water inlet pipe 4, a second connecting pipe 5, an air inlet pipe 6, a liquid outlet pipe 7, a first connecting pipe 8, a processing shell 9, a semiconductor refrigeration sheet 10, an air exhaust fan 11, a cooling shell 12, a water outlet pipe 13, an inner shell 14, an arc baffle 15, a first hollow shell 16, a hollow pipe 17, a second hollow shell 18, a rotating shaft 19 and a dispersion plate 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and in the present invention, unless explicitly specified or limited otherwise, the terms "mounting", "setting", "connecting", "fixing", "screwing", and the like are to be understood in a broad sense, for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Example 1

Referring to fig. 1-2, a distillation tower for producing methyl methacrylate, comprising a distillation tower 2 and an inner shell 14, wherein the outer wall of one side of the distillation tower 2 can be connected with a cooling shell 12 through bolts, the outer wall of one side of the cooling shell 12 can be connected with an air extracting fan 11 through bolts, the outer walls of two ends of the cooling shell 12 are inserted with semiconductor refrigerating fins 10 distributed equidistantly, the outer wall of the bottom of the cooling shell 12 is inserted with a first connecting pipe 8, the other end of the first connecting pipe 8 extends into the inner shell 14, the other end of the first connecting pipe 8 can be connected with a first hollow shell 16 through bolts, the outer wall of the bottom of the inner shell 14 is inserted with a second connecting pipe 5, the other end of the second connecting pipe 5 extends out of the distillation tower 2, the outer wall of the top of the second connecting pipe 5 can be connected with a second hollow, and the other end of the hollow pipe 17 extends to be arranged inside the first hollow shell 16, four corners of the outer wall of the bottom of the distillation tower 2 can be connected with supporting legs distributed at equal intervals through bolts, and the inner wall of the bottom of the inner shell 14 is fixed on the inner wall of the bottom of the distillation tower 2 through bolts.

In the utility model, the bottom of the outer wall at the other side of the distillation tower 2 is inserted with a water inlet pipe 4, the top of the outer wall at one side of the distillation tower 2 is inserted with a water outlet pipe 13, the outer wall at one end of the distillation tower 2 can be connected with a processing shell 9 through a bolt, and the outer wall of the top of the processing shell 9 is inserted with an air outlet pipe 1, the other end of the air outlet pipe 1 extends into the inner shell 14, one end of the outer wall of the top of the processing shell 9 is provided with a sliding groove, and the inner wall of the sliding groove is inserted with an active carbon adsorption screen plate 3, the outer wall of the top of the active carbon adsorption screen plate 3 can be connected with a handle through a bolt, the outer wall of one end of the processing shell 9 is provided with air outlets distributed at equal intervals, the outer wall of the bottom of the inner shell 14 is inserted with a liquid outlet pipe 7, and the air inlet pipe 6 is inserted and connected to one end of the outer wall of the bottom of the inner shell 14, the inner walls of two sides of the inner shell 14 can be connected with the same arc-shaped baffle plate 15 through bolts, and the outer wall of the bottom of the arc-shaped baffle plate 15 is inserted and connected with through holes distributed at equal intervals.

The working principle is as follows: during the use, methyl methacrylate after the vaporization enters into interior casing 14 inside from intake pipe 6, then enter into between distillation column 2 and interior casing 14 with external cold water through inlet tube 4, come to condense methyl methacrylate after the vaporization, then open bleed fan 11 and semiconductor refrigeration piece 10, cool off external wind and pump into first hollow casing 16 through first connecting pipe 8, then through hollow tube 17, second hollow casing 18 flows out through second connecting pipe 5, come to condense methyl methacrylate after the vaporization, the sufficiency of condensation has been improved, the condensation efficiency has been improved, methyl methacrylate gas that does not condense enters into processing casing 9 through outlet duct 1, activated carbon adsorption otter board 3 absorbs remaining methyl methacrylate gas, avoid polluting the outside air.

Example 2

Referring to fig. 1-3, a distillation column for producing methyl methacrylate further comprises a rotating shaft 19 rotatably connected to the outer wall of the opposite side of the first hollow shell 16 and the second hollow shell 18, and a plurality of dispersing plates 20 equidistantly distributed are connected to the circumferential outer wall of the rotating shaft 19 through bolts.

The working principle is as follows: compared with embodiment 1, through being provided with rotation axis 19 and dispersion plate 20, disperse the methyl methacrylate gas that intake pipe 6 got into, avoid getting into the gaseous speed of methyl methacrylate of interior casing 14 too fast and condensation insufficient, increase the time of methyl methacrylate condensation, make the distillation effect better.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, and the supply also belongs to the common general knowledge in this field, and the utility model discloses mainly used protects mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A distillation column for producing methyl methacrylate comprises a distillation column (2) and an inner shell (14), it is characterized in that a cooling shell (12) is arranged on the outer wall of one side of the distillation tower (2), an air extracting fan (11) is arranged on the outer wall of one side of the cooling shell (12), semiconductor refrigerating sheets (10) which are distributed at equal intervals are inserted on the outer walls of the two ends of the cooling shell (12), a first connecting pipe (8) is inserted into the outer wall of the bottom of the cooling shell (12), a first hollow shell (16) is arranged at the other end of the first connecting pipe (8), the outer wall of the bottom of the inner shell (14) is spliced with a second connecting pipe (5), and the outer wall of the top of the second connecting pipe (5) is provided with a second hollow shell (18), hollow pipes (17) which are distributed at equal intervals are inserted into the top of the outer wall at one side of the second hollow shell (18), and the other end of the hollow pipe (17) extends to the interior of the first hollow shell (16).

2. The distillation column for producing methyl methacrylate as claimed in claim 1, wherein the bottom of the outer wall of the distillation column (2) at the other side is inserted with a water inlet pipe (4), and the top of the outer wall of the distillation column (2) at one side is inserted with a water outlet pipe (13).

3. The distillation column for producing methyl methacrylate as claimed in claim 1, wherein the outer wall of one end of the distillation column (2) is provided with a processing shell (9), and the outer wall of the top of the processing shell (9) is inserted with the gas outlet pipe (1).

4. The distillation tower for producing methyl methacrylate as claimed in claim 3, wherein one end of the outer wall of the top of the processing shell (9) is provided with a sliding groove, the inner wall of the sliding groove is inserted with the activated carbon adsorption screen plate (3), and the outer wall of one end of the processing shell (9) is provided with air outlets distributed equidistantly.

5. The distillation column according to claim 4, wherein the outer wall of the bottom of the inner shell (14) is inserted with the liquid outlet pipe (7), and one end of the outer wall of the bottom of the inner shell (14) is inserted with the gas inlet pipe (6).

6. The distillation tower for producing methyl methacrylate as claimed in claim 5, wherein the same arc-shaped baffle (15) is installed on the inner wall of both sides of the inner shell (14), and the outer wall of the bottom of the arc-shaped baffle (15) is inserted with through holes distributed equidistantly.

7. The distillation column for producing methyl methacrylate as claimed in claim 1, wherein the same rotating shaft (19) is rotatably connected to the outer wall of the opposite side of the first hollow shell (16) and the second hollow shell (18), and the outer wall of the circumference of the rotating shaft (19) is provided with dispersing plates (20) which are distributed at equal intervals.