CN214808496U - Durene distillation separator - Google Patents
Durene distillation separator Download PDFInfo
- Publication number
- CN214808496U CN214808496U CN202121524044.6U CN202121524044U CN214808496U CN 214808496 U CN214808496 U CN 214808496U CN 202121524044 U CN202121524044 U CN 202121524044U CN 214808496 U CN214808496 U CN 214808496U
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- China
- Prior art keywords
- distillation
- durene
- vertical partition
- plate
- chamber
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- 238000004821 distillation Methods 0.000 title claims abstract description 88
- SQNZJJAZBFDUTD-UHFFFAOYSA-N durene Chemical compound CC1=CC(C)=C(C)C=C1C SQNZJJAZBFDUTD-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000001816 cooling Methods 0.000 claims abstract description 46
- 238000005192 partition Methods 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 230000002265 prevention Effects 0.000 claims abstract description 13
- 239000011550 stock solution Substances 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims abstract description 3
- 238000000429 assembly Methods 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 10
- 230000000151 anti-reflux effect Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 abstract description 9
- 238000004508 fractional distillation Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 10
- 238000009833 condensation Methods 0.000 description 7
- 230000005494 condensation Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 description 3
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a durene distillation separator belongs to durene production technical field. A durene distillation separation device, comprising: the reaction box body and the backflow prevention assembly; the backflow prevention assemblies are connected to the interior of the reaction box body and used for preventing the return flow of the distilled durene stock solution; the reaction box body comprises: the outer shell, the first vertical partition plate, the transverse partition plate, the second vertical partition plate and the flow guide port; the first vertical partition plates are connected to the inner bottom surface of the outer shell; the transverse partition plate is connected to the top of the first vertical partition plate; a plurality of second vertical partition plates are connected to the tops of the transverse partition plates; the plurality of flow guide openings are formed in the top of the diaphragm plate; the utility model discloses a backflow prevention subassembly and cooling plate's use has solved current durene distillation plant when carrying out fractional distillation, and the easy backward flow of distillation solution has reduced the purity of solution, has reduced the efficiency of solution purification.
Description
Technical Field
The utility model relates to a durene production technical field especially relates to a durene distillation separator.
Background
The pyromellitic acid is a component with higher utilization value in C10 heavy aromatic hydrocarbon, and is mainly used for producing pyromellitic dianhydride. The main application of the pyromellitic dianhydride is to react with 4, 4-diamino diether to produce novel high-temperature-resistant engineering plastics and insulating material polyimide.
Through search, the chinese patent application No. 202020714945.0 discloses a durene separation reaction kettle, which comprises a reaction kettle body, a first distillation chamber, a second distillation chamber, a third distillation chamber, a cooling tank, a first cooling chamber and a second cooling chamber; the first distillation chamber is arranged at one end inside the reaction kettle body; the second distillation chamber is arranged in the reaction kettle body and close to the first distillation chamber; the third distillation chamber is arranged at one end of the interior of the reaction kettle body, which is far away from the first distillation chamber; the cooling box is arranged in the middle of the upper end surface of the reaction kettle body; a first heating pipe is arranged in the first distillation chamber, and the lower end of the first heating pipe penetrates through the first distillation chamber and the base and is connected with a first controller; the second heating pipe is arranged in the second distillation chamber, and the lower end of the second heating pipe penetrates through the second distillation chamber and the base and is connected with a second controller; and a third heating pipe is arranged in the third distillation chamber, and the lower end of the third heating pipe penetrates through the third distillation chamber and the base and is connected with a third controller.
However, the following problems still exist in the technical solution:
1. there is no backflow prevention structure: the first connecting pipe is located second distillation chamber one end and the second connecting pipe is located third distillation chamber one end and all does not have anti-return structure, and the durene gas-liquid after the distillation in second distillation chamber and the third distillation chamber flows to the cooling chamber through the connecting pipe easily, causes the liquid purity lower in the cooling chamber, and has reduced the efficiency of durene raw materials distillation purification.
2. The distillation gas-liquid that first trachea is located the inside one end of first cooling chamber easily condenses and flows back to first distillation chamber through first trachea, has prolonged durene solution distillation separation's time.
3. The contact area between the first cooling chamber and the condensing pipe in the device is small, and the condensing efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at prior art's weak point, provide a durene distillation separator, through the use of anti-return subassembly, solved current durene distillation plant when carrying out fractional distillation, the distillation solution flows back easily, has reduced the purity of solution, has reduced the problem of solution purification separation efficiency, and through the use of cooling plate, it is less to have solved the condensation area, the lower problem of condensation efficiency.
In order to achieve the above object, the utility model provides a following technical scheme:
a durene distillation separation device, comprising:
a reaction box body;
a backflow prevention assembly; a plurality of backflow-preventing components are connected to the interior of the reaction box body and used for preventing the backflow of the distilled durene stock solution
Preferably, the reaction chamber body includes:
an outer housing;
a first vertical partition; the first vertical partition plates are connected to the inner bottom surface of the outer shell;
a diaphragm plate; the transverse partition plate is connected to the top of the first vertical partition plate;
a second vertical partition; a plurality of second vertical partition plates are connected to the tops of the transverse partition plates;
a flow guide port; the diversion openings are formed in the top of the diaphragm plate.
Preferably, the backflow prevention assembly includes:
a flow guide hopper; the diversion hopper is connected to the lower surface of the diaphragm plate and communicated with the diversion port;
a U-shaped tube; the U-shaped pipe is connected to the bottom position of the flow guide hopper.
Preferably, the top of the second vertical partition is connected with a cooling device for cooling the distilled durene raw material.
Preferably, the cooling device comprises a cooling plate connected with the external cooler, and the cross section of the cooling plate is of a wave-shaped structure.
Preferably, a first distillation cavity, a second distillation cavity and a third distillation cavity are formed among the first vertical partition plates, the transverse partition plates and the outer shell along the positive direction of the X axis of the coordinate system.
Preferably, an input pipe extending into the first distillation cavity is connected to one side surface of the outer shell along the negative direction of the X axis of the coordinate system, and one end of the input pipe located inside the first distillation cavity is of a U-shaped structure.
Preferably, the top of the diaphragm plate is respectively connected with a flow guide pipe extending to the first distillation cavity and the second distillation cavity, and the top end of the flow guide pipe is connected with a one-way valve.
The beneficial effects of the utility model reside in that:
(1) the utility model discloses an use of anti-return subassembly for when the durene raw materials carries out fractional distillation, gas in the second distillation chamber can't enter into first cooling chamber and do not influence first cooling chamber liquid through U-shaped pipe and water conservancy diversion fill, has improved the purity and the work efficiency of durene raw materials distillation separation.
(2) The utility model discloses a structure of cooling plate ripple shape is utilized in the use of cooling plate, has increased the area of contact of distilled gas with the cooling plate relatively, has improved the efficiency of raw materials condensation, has practiced thrift the condensation time.
(3) The utility model discloses a use of cross slab, check valve and honeycomb duct can avoid being arranged in the honeycomb duct of cooling chamber to flow back to the problem in the distillation chamber through the honeycomb duct before gaseous cooling chamber that does not get into, has improved the work efficiency of device distillation separation, and through the use of check valve, has avoided the problem that the condensate liquid in the cooling chamber passes through the honeycomb duct and gets into in the distillation chamber.
To sum up, the utility model has the advantages of prevent the gaseous backward flow of distillation, increase condensation area improves work efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1 according to the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 according to the present invention;
FIG. 4 is a schematic structural view of the reaction chamber of FIG. 1 according to the present invention;
FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 4 according to the present invention;
fig. 6 is a schematic structural view of the backflow prevention assembly of fig. 3 according to the present invention.
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, not all embodiments. 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.
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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but 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.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Example one
As shown in fig. 1 to 3, a durene distillation separation apparatus, comprising:
a reaction box body 1;
a backflow prevention assembly 4; the backflow prevention assemblies 4 are connected to the inside of the reaction box body 1 and used for preventing the return flow of the distilled durene stock solution;
it should be noted that, a plurality of heaters 3 are connected inside the reaction box 1 for heating the durene raw material, and the heaters 3 are electrically connected to an external power supply.
As shown in fig. 4 and 5, the reaction chamber 1 includes:
an outer housing 101;
a first vertical partition 102; a plurality of first vertical partition plates 102 are connected to the inner bottom surface of the outer shell 101;
a diaphragm plate 103; the transverse partition plate 103 is connected to the top of the first vertical partition plate 102;
a second vertical partition 104; a plurality of second vertical partition plates 104 are connected to the top of the transverse partition plate 103;
a diversion opening 110; the diversion ports 110 are formed in the top of the diaphragm 103;
a first distillation cavity 105, a second distillation cavity 106 and a third distillation cavity 107 are formed among the first vertical partition plates 102, the transverse partition plates 103 and the outer shell 101 along the positive direction of the X axis of the coordinate system;
it should be noted that, a plurality of vacuum chambers 111 are provided inside the diaphragm 103 to have a heat insulation function, and the outer wall of the outer casing 101 is respectively connected with temperature controllers 8 matched with the first distillation chamber 105, the second distillation chamber 106 and the third distillation chamber 107 for individually controlling the temperature of the chambers.
As shown in fig. 3 and 6, the backflow prevention assembly 4 includes:
a diversion hopper 401; the diversion hopper 401 is connected to the lower surface of the diaphragm 103 and communicated with the diversion port 110;
a U-shaped tube 402; the U-shaped pipe 402 is connected to the bottom position of the diversion hopper 401;
it should be noted that the condensed liquid entering the diversion hopper 401 through the diversion opening 110 enters the second distillation cavity 106 or the third distillation cavity 107 through the U-shaped pipe 402, at this time, liquid is deposited on the bottom inside the U-shaped pipe 402, and the distilled gas in the second distillation cavity 106 or the third distillation cavity 107 cannot flow back.
An input pipe 7 extending to the inside of the first distillation cavity 105 is connected to one side surface of the outer shell 101 along the negative direction of the X axis of the coordinate system, and one end of the input pipe 7, which is positioned in the first distillation cavity 105, is of a U-shaped structure; the top of the diaphragm 103 is connected with an output pipe 9 communicated with the third distillation cavity 107;
the top of the diaphragm 103 is connected with a draft tube 5 extending to the inside of the first distillation chamber 105 and the second distillation chamber 106, and the top of the draft tube 5 is connected with a check valve 6 for blocking the backflow of gas or liquid.
Example two
As shown in fig. 1, 3 and 5, wherein the same or corresponding components as in the first embodiment are designated by the same reference numerals as in the first embodiment, only the differences from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that:
the top of the second vertical partition plate 104 is connected with a cooling device 2 for cooling the distilled durene raw material;
the cooling device 2 comprises a cooling plate 201 connected with an external cooler, and the cross section of the cooling plate 201 is of a wave-shaped structure;
it should be noted that the top of the cooling plate 201 is respectively communicated with a liquid inlet pipe 203 and a liquid outlet pipe 202 connected with an external cooler, a first cooling chamber 108 and a second cooling chamber 109 are formed between the cooling plate 201, the transverse partition plate 103, the plurality of second vertical partition plates 104 and the external shell 101, the first cooling chamber 108 is communicated with the first distillation chamber 105 through the draft tube 5 and the check valve 6, the second cooling chamber 109 is communicated with the second distillation chamber 106 through the draft tube 5 and the check valve 6, the first cooling chamber 108 is communicated with the second distillation chamber 106 through the draft port 110 formed in the inner bottom surface thereof, and the second cooling chamber 109 is communicated with the third distillation chamber 107 through the draft port 110 formed in the inner bottom surface thereof.
The working steps are as follows:
first, a cooling liquid is added to the cooling plate 201 by an external controller.
Secondly, durene raw material is fed into the first distillation chamber 105 through the inlet pipe 7, and the raw material is heated by the heater 3.
Thirdly, the gas heated by the first distillation cavity 105 enters the first cooling cavity 108 through the draft tube 5 and the one-way valve 6 for condensation and separation.
Fourthly, the condensate condensed and separated by the first cooling cavity 108 enters the second distillation cavity 106 through the diversion opening 110 and the backflow prevention component 4 for secondary fractional distillation.
And fifthly, the gas after the secondary fractional distillation in the second distillation cavity 106 enters the second cooling cavity 109 through the draft tube 5 and the one-way valve 6 for condensation and separation.
Sixthly, the condensate condensed and separated by the second cooling cavity 109 enters the third distillation cavity 107 through the flow guide opening 110 and the backflow prevention assembly 4 to be subjected to tertiary fractional distillation, and the distilled pyromellitic dianhydride gas is collected through the output pipe 9.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A durene distillation separation device, characterized by comprising:
a reaction box body (1);
a backflow prevention assembly (4); and the backflow preventing assemblies (4) are connected to the interior of the reaction box body (1) and used for preventing the backflow of the distilled durene stock solution.
2. Durene distillation separation device according to claim 1, characterized in that the reaction box (1) comprises:
an outer case (101);
a first vertical partition (102); a plurality of first vertical partition plates (102) are connected to the inner bottom surface of the outer shell (101);
a diaphragm plate (103); the transverse partition plate (103) is connected to the top of the first vertical partition plate (102);
a second vertical partition (104); a plurality of second vertical partition plates (104) are connected to the top of the transverse partition plate (103);
a diversion opening (110); the diversion ports (110) are arranged at the top of the diaphragm plate (103).
3. Durene distillation separation device according to claim 2, characterized in that said anti-reflux assembly (4) comprises:
a diversion hopper (401); the diversion hopper (401) is connected to the lower surface of the diaphragm plate (103) and communicated with the diversion port (110);
a U-shaped tube (402); the U-shaped pipe (402) is connected to the bottom position of the flow guide hopper (401).
4. The durene distillation separation device according to claim 2, wherein a cooling device (2) is connected to the top of the second vertical partition plate (104) and is used for cooling the durene raw material after distillation.
5. Durene distillation separation device according to claim 4, characterized in that the cooling device (2) comprises a cooling plate (201) connected to an external cooler, the cooling plate (201) having a wave-shaped cross-section.
6. Durene distillation separation device according to claim 2, wherein a first distillation chamber (105), a second distillation chamber (106) and a third distillation chamber (107) are formed between the first vertical partition (102), the transverse partition (103) and the outer casing (101) in the positive direction of the X-axis of the coordinate system.
7. The durene distillation separation device according to claim 6, wherein an input pipe (7) extending to the inside of the first distillation chamber (105) is connected to one side of the outer shell (101) along the negative direction of the X axis of the coordinate system, and one end of the input pipe (7) located inside the first distillation chamber (105) is of a U-shaped structure.
8. The durene distillation separation device according to claim 7, wherein a draft tube (5) extending to the inside of the first distillation chamber (105) and the second distillation chamber (106) is connected to the top of the diaphragm (103), and a one-way valve (6) is connected to the top end of the draft tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121524044.6U CN214808496U (en) | 2021-07-06 | 2021-07-06 | Durene distillation separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121524044.6U CN214808496U (en) | 2021-07-06 | 2021-07-06 | Durene distillation separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214808496U true CN214808496U (en) | 2021-11-23 |
Family
ID=78812810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121524044.6U Expired - Fee Related CN214808496U (en) | 2021-07-06 | 2021-07-06 | Durene distillation separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214808496U (en) |
-
2021
- 2021-07-06 CN CN202121524044.6U patent/CN214808496U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211123 |