CN217472747U

CN217472747U - Methyl fluorobenzene production is with having atmospheric distillation tower who removes foam device

Info

Publication number: CN217472747U
Application number: CN202221382993.XU
Authority: CN
Inventors: 汪峻; 杨国礼; 叶强林
Original assignee: Dongzhi Detai Fine Chemical Co ltd
Current assignee: Dongzhi Detai Fine Chemical Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-23
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses an atmospheric distillation tower with a defoaming device for producing methyl fluorobenzene, which comprises a distillation tower body, wherein a defoaming tower part is arranged at the top of the distillation tower body, and an opening and closing part is arranged at the joint between the distillation tower body and the defoaming tower part; the inner wall of the defoaming tower piece is sequentially provided with a first defoaming net and a second defoaming net from bottom to top, the top of the defoaming tower piece is vertically inserted with a main shaft, the main shaft penetrates through the side wall of the downward extending end of the second defoaming net and is uniformly provided with a rectangular defoaming wire mesh in a surrounding manner, and the rectangular defoaming wire mesh is positioned between the first defoaming net and the second defoaming net; the upper end both sides slope of second defoaming net is provided with the baffle of two symmetries, and the baffle of both sides is to middle slope and leave the upper end air vent. The utility model overcomes prior art's is not enough, and reasonable in design can effectively get rid of the foam that mix with in the steam, has higher social use value and application prospect.

Description

Methyl fluorobenzene production is with having atmospheric distillation tower who removes foam device

Technical Field

The utility model relates to a methyl fluorobenzene technical field especially relates to a methyl fluorobenzene production is with atmospheric distillation tower that has a defoaming device.

Background

In the process of producing the synthetic methyl fluorobenzene, crude methyl fluorobenzene generated by the synthetic reaction needs to be distilled and purified through an atmospheric distillation tower, an atmospheric distillation kettle is a device for gasifying and distilling liquid, a demister is a gas-liquid separation device, and when distilled liquid is distilled, mist is contained in gas, so that the purity of the gas is reduced, the gas enters a downstream process, the product quality of the downstream process is influenced, and if the gas is discharged into the atmosphere, the atmosphere pollution is caused.

The atmospheric distillation recovery process, stills's glass level gauge can often appear blockking up the condition of level gauge, leads to the level gauge liquid level to show inaccurately, and then influences the equipment and use, and the processing method that prior art was used commonly is exactly equipment parking, wholly pulls down the level gauge after the cooling and washs, wastes time and energy, influences production.

Therefore, the inventor provides an atmospheric distillation tower with a defoaming device for producing the fluoromethylbene, which is researched and improved according to the existing structure and deficiency, and the aim of having more practical value is fulfilled, with the experience of abundant design development and actual manufacturing of related industries for many years.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem mentioned in the above-mentioned background art, the utility model provides a methyl fluorobenzene production is with having atmospheric distillation tower who removes foam device.

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

an atmospheric distillation tower with a defoaming device for producing methyl fluorobenzene comprises a distillation tower body, wherein a defoaming tower part is arranged at the top of the distillation tower body, and an opening and closing part is arranged at the joint between the distillation tower body and the defoaming tower part;

the inner wall of the defoaming tower piece is sequentially provided with a first defoaming net and a second defoaming net from bottom to top, the top of the defoaming tower piece is vertically inserted with a main shaft, the main shaft penetrates through the side wall of the downward extending end of the second defoaming net and is uniformly provided with a rectangular defoaming wire mesh in a surrounding manner, and the rectangular defoaming wire mesh is positioned between the first defoaming net and the second defoaming net;

the upper end both sides slope that the second removes the foam net is provided with the baffle of two symmetries, and the baffle of both sides is to middle slope and leave the upper end blow vent, and the level is provided with the multiunit filter screen between two baffles.

Preferably, the middle part of the opening and closing component is provided with a gas channel, a gate is horizontally arranged in the gas channel, an electric push rod is horizontally arranged on one side of the gate, and the inner wall of the opening and closing component is provided with an accommodating groove corresponding to the gate.

Preferably, the inner wall of the main shaft is provided with a main channel, the lower end of the main channel is communicated with a plurality of groups of spray holes, and the spray holes are located at the connecting part of the rectangular defoaming screen and the main shaft.

Preferably, the side wall of the main channel is communicated with a spray pipe, the bottom of the spray pipe is communicated with a plurality of groups of spray heads, and the spray heads are positioned above the second defoaming net.

Preferably, the upper port of the main channel is inserted with a water inlet pipe, and the outer wall of the joint of the water inlet pipe and the main channel is sleeved with a bearing.

Preferably, a reboiler is connected to one side of the bottom of the distillation column body.

Preferably, top one side intercommunication of defoaming tower spare has the gas vent, defoaming tower spare and the one side intercommunication of the part junction that opens and shuts have sewage discharge port, all install the valve on the pipeline of gas vent and sewage discharge port.

Preferably, the outer wall of the upper end of the main shaft is sleeved with a first driving wheel, the first driving wheel is connected with a second driving wheel through a driving belt in a driving mode, a rotating shaft is vertically inserted into the bottom of the second driving wheel, and a motor is arranged at the end, penetrating through the fixing block, of the rotating shaft, extending downwards.

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

1. the first defoaming net, the second defoaming net and the filter screen are arranged to gradually eliminate the entrainment in the steam;

2. by arranging the rectangular defoaming wire mesh, the spray can be rotationally stirred, so that the spray is more dispersed until eliminated;

3. after the distillation column stop work, can realize removing the washing work that foam net, rectangle removed foam silk screen and filter screen to first foam net, second to help promoting whole work efficiency.

To sum up, the utility model overcomes prior art's is not enough, and reasonable in design can effectively get rid of the mist that mix with in the steam, has higher social use value and application prospect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic structural view of the defoaming tower member of the present invention;

FIG. 3 is an enlarged view of the structure A of the present invention;

fig. 4 is a schematic view of the installation structure of the rectangular defoaming screen of the present invention.

In the figure: the device comprises a distillation tower body 1, a defoaming tower part 2, a reboiler 3, an opening and closing part 4, a gas channel 41, a gate 42, an electric push rod 43, a first defoaming net 5, a second defoaming net 6, a rectangular defoaming net 7, a main shaft 8, a main channel 9, a baffle plate 10, a spray pipe 11, a spray head 12, spray holes 13, a filter screen 14, a first transmission wheel 15, a transmission belt 16, a second transmission wheel 17, a motor 18, a water inlet pipe 19, an exhaust port 20 and a sewage discharge port 21.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, an atmospheric distillation tower with a defoaming device for producing methyl fluorobenzene comprises a distillation tower body 1, wherein one side of the bottom of the distillation tower body 1 is connected with a reboiler 3, a defoaming tower part 2 is arranged at the top of the distillation tower body 1, and an opening and closing part 4 is arranged at the joint between the distillation tower body 1 and the defoaming tower part 2; the middle part of the opening and closing part 4 is provided with a gas channel 41, a gate 42 is horizontally arranged in the gas channel 41, one side of the gate 42 is horizontally provided with an electric push rod 43, and the inner wall of the opening and closing part 4 is provided with a containing groove corresponding to the gate 42;

one side of the top of the defoaming tower piece 2 is communicated with an air outlet 20, one side of the joint of the defoaming tower piece 2 and the opening and closing component 4 is communicated with a sewage outlet 21, and valves are respectively arranged on the pipelines of the air outlet 20 and the sewage outlet 21;

starting the electric push rod 43, the gas channel 41 can be opened and closed by pushing the gate 42, so that when the distillation tower stops working, the gate 42 closes the gas channel 41, and the subsequent cleaning work is facilitated.

The inner wall of the defoaming tower part 2 is sequentially provided with a first defoaming net 5 and a second defoaming net 6 from bottom to top, the top of the defoaming tower part 2 is vertically inserted with a main shaft 8, the main shaft 8 penetrates through the side wall of the downward extending end of the second defoaming net 6 and is uniformly provided with a rectangular defoaming wire mesh 7 in a surrounding manner, and the rectangular defoaming wire mesh 7 is positioned between the first defoaming net 5 and the second defoaming net 6; the inner wall of the main shaft 8 is provided with a main channel 9, the upper port of the main channel 9 is inserted with a water inlet pipe 19, and the outer wall of the joint of the water inlet pipe 19 and the main channel 9 is sleeved with a bearing;

the side wall of the main channel 9 is communicated with a spray pipe 11, the bottom of the spray pipe 11 is communicated with a plurality of groups of spray heads 12, and the spray heads 12 are positioned above the second defoaming net 6;

a first driving wheel 15 is sleeved on the outer wall of the upper end of the main shaft 8, the first driving wheel 15 is connected with a second driving wheel 17 in a driving mode through a driving belt 16, a rotating shaft is vertically inserted into the bottom of the second driving wheel 17, and a motor 18 is arranged at the end, extending downwards, of the rotating shaft penetrating through the fixing block;

starting a motor 18, driving a second transmission wheel 17 to rotate through a rotating shaft, and driving a first transmission wheel 15 to rotate through a transmission belt 16 by the second transmission wheel 17 to realize the rotation of the spindle 8; the main shaft 8 drives the rectangular defoaming screen mesh 7 to stir and remove the mist entrained in the steam, and the mist gradually rises and sequentially passes through the first defoaming screen 5, the second defoaming screen 6 and the filter screen 14, so that the filter hole apertures of the first defoaming screen 5, the second defoaming screen 6 and the filter screen 14 are sequentially reduced from bottom to top, and the mist is thoroughly eliminated.

When the distillation tower stops working, the gate 42 is closed, and cleaning water enters the main channel 9 from the water inlet pipe 19 at the moment, so that the cleaning work of the first defoaming net 5, the second defoaming net 6, the rectangular defoaming wire net 7 and the filter screen 14 is realized; after cleaning, the gate 42 is opened again, and the valve of the sewage discharge port 21 is opened to discharge the sewage outwardly.

The lower end of the main channel 9 is communicated with a plurality of groups of spray holes 13, and the spray holes 13 are positioned at the connecting part of the rectangular defoaming silk screen 7 and the main shaft 8; during cleaning, water is sprayed to the rectangular defoaming screen 7 from the spray holes 13, and meanwhile, the spraying is carried out in a rotating way under the driving of the main shaft 8, so that the rectangular defoaming screen 7 is cleaned;

two symmetrical baffles 10 are obliquely arranged on two sides of the upper end of the second defoaming net 6, the baffles 10 on two sides are inclined towards the middle and provided with upper-end air vents, and a plurality of groups of filter screens 14 are horizontally arranged between the two baffles 10.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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. The utility model provides a methyl fluorobenzene production is with having atmospheric distillation tower of defoaming device, includes distillation column body (1), its characterized in that: the top of the distillation tower body (1) is provided with a defoaming tower piece (2), and the joint between the distillation tower body (1) and the defoaming tower piece (2) is provided with an opening and closing part (4);

the inner wall of the defoaming tower piece (2) is sequentially provided with a first defoaming net (5) and a second defoaming net (6) from bottom to top, the top of the defoaming tower piece (2) is vertically inserted with a main shaft (8), the main shaft (8) penetrates through the side wall of the downward extending end of the second defoaming net (6) and is uniformly provided with a rectangular defoaming wire mesh (7) in a surrounding manner, and the rectangular defoaming wire mesh (7) is positioned between the first defoaming net (5) and the second defoaming net (6);

the upper end both sides slope of second defoaming net (6) is provided with baffle (10) of two symmetries, and baffle (10) of both sides are to middle slope and leave the upper end air vent, and the level is provided with multiunit filter screen (14) between two baffle (10).

2. The atmospheric distillation tower with a defoaming device for producing the methylfluorobenzene according to claim 1, which is characterized in that: the middle part of part (4) that opens and shuts is equipped with gas passage (41), and the level is equipped with gate (42) in gas passage (41), one side level of gate (42) is equipped with electric putter (43), the inner wall of part (4) that opens and shuts is equipped with the groove of accomodating that corresponds with gate (42).

3. The atmospheric distillation tower with a defoaming device for the production of fluoromethylbene according to claim 1, wherein: the inner wall of the main shaft (8) is provided with a main channel (9), the lower end of the main channel (9) is communicated with a plurality of groups of spray holes (13), and the spray holes (13) are positioned at the connecting part of the rectangular defoaming silk screen (7) and the main shaft (8).

4. The atmospheric distillation tower with a defoaming device for producing the methylfluorobenzene according to claim 3, which is characterized in that: the side wall of the main channel (9) is communicated with a spray pipe (11), the bottom of the spray pipe (11) is communicated with a plurality of groups of spray heads (12), and the spray heads (12) are positioned above the second defoaming net (6).

5. The atmospheric distillation tower with a defoaming device for the production of fluoromethylbene according to claim 4, wherein: the upper port of the main channel (9) is inserted with a water inlet pipe (19), and the outer wall of the joint of the water inlet pipe (19) and the main channel (9) is sleeved with a bearing.

6. The atmospheric distillation tower with a defoaming device for the production of fluoromethylbene according to claim 1, wherein: one side of the bottom of the distillation tower body (1) is connected with a reboiler (3).

7. The atmospheric distillation tower with a defoaming device for the production of fluoromethylbene according to claim 1, wherein: the top one side intercommunication of defoaming tower spare (2) has gas vent (20), one side intercommunication of defoaming tower spare (2) and opening and shutting part (4) junction has sewage discharge port (21), all installs the valve on the pipeline of gas vent (20) and sewage discharge port (21).

8. The atmospheric distillation tower with a defoaming device for producing the methylfluorobenzene according to claim 1, which is characterized in that: the outer wall of the upper end of the main shaft (8) is sleeved with a first driving wheel (15), the first driving wheel (15) is in transmission connection with a second driving wheel (17) through a transmission belt (16), a rotating shaft is vertically inserted into the bottom of the second driving wheel (17), and a motor (18) is arranged at the end, extending downwards, of the rotating shaft penetrating through the fixing block.