CN212283991U - Reaction system for thermal dehydration into anhydride - Google Patents
Reaction system for thermal dehydration into anhydride Download PDFInfo
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- CN212283991U CN212283991U CN202020380207.7U CN202020380207U CN212283991U CN 212283991 U CN212283991 U CN 212283991U CN 202020380207 U CN202020380207 U CN 202020380207U CN 212283991 U CN212283991 U CN 212283991U
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- thermal dehydration
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- anhydride
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Abstract
The utility model relates to a chemical industry equipment field, in particular to reaction system of thermal dehydration into anhydride. The utility model provides a production system, include: the push type pipeline reaction device comprises a reaction cavity body, a material pushing device and a heating device for adjusting the temperature in the reaction cavity body, wherein the material pushing device is positioned in the reaction cavity body, and a vacuum port is also formed in the reaction cavity body; the material storage device is communicated with a feeding hole of the push type pipeline reaction device; and the crushing and sieving device is communicated with a discharge hole of the push type pipeline reaction device. The utility model provides a reaction unit of thermal dehydration anhydride-forming can realize solid feeding, the solid ejection of compact, and whole reaction process unit need not to introduce the solvent, and its reaction product can directly be drawn forth and pack, has saved manufacturing cost on the whole, and does benefit to the environmental protection more, has good industrialization prospect.
Description
Technical Field
The utility model relates to a chemical industry equipment field, in particular to reaction system of thermal dehydration into anhydride.
Background
Phthalic anhydride compounds such as 4,4' - (hexafluoroisopropylidene) diphthalic anhydride (6FDA) and 4, 4-oxydiphthalic anhydride (ODPA) are useful polymer monomers, and are useful for synthesizing various polyimide materials and have a wide range of applications.
In the prior art, when the acid anhydride is prepared, the adopted process equipment generally depends on using a large amount of liquid reaction system (for example, phthalic anhydride is formed after corresponding phthalic acid is dehydrated under the action of a strong dehydrating agent), so that the manufacturing cost of the reaction system is high, and the reaction system also needs to be provided with a recovery system corresponding to the byproduct (for example, waste acid solution), otherwise, the environment is greatly influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a production system for solving the problems of the prior art.
To achieve the above and other related objects, the present invention provides a production system, comprising:
the push type pipeline reaction device comprises a reaction cavity body, a material pushing device and a heating device for adjusting the temperature in the reaction cavity body, wherein the material pushing device is positioned in the reaction cavity body, and a vacuum port is also formed in the reaction cavity body;
the material storage device is communicated with a feeding hole of the push type pipeline reaction device;
smash the device that sieves, smash the device that sieves and include comminuted cavity and powder collection cavity along the whereabouts direction of material in proper order, be equipped with the rotor in the comminuted cavity, comminuted cavity and powder are collected and are equipped with screen cloth (33) between the cavity, comminuted cavity and impulse type pipeline reaction unit's discharge gate intercommunication.
In some embodiments of the present invention, the heating device comprises a jacket for introducing a heat transfer fluid.
In some embodiments of the present invention, the jacket is located on the outer wall of the reaction chamber body.
In some embodiments of the present invention, the material propulsion device includes a shaft and paddles evenly distributed about the shaft.
In some embodiments of the invention, the paddle is in the shape of a ribbon or disc.
The utility model discloses in some embodiments, the extending direction of pivot is unanimous with the extending direction of reaction cavity body, including the heat-conducting liquid chamber that holds in the pivot.
In some embodiments of the present invention, a temperature measuring device is further disposed in the reaction chamber body.
In some embodiments of the present invention, the material storage device and the impulse type pipeline reaction device are provided with a feeder on a communication pipeline.
In some embodiments of the present invention, the mesh has a diameter of 30 to 80 mesh.
In some embodiments of the present invention, the vacuum pump further comprises a negative pressure providing device, and the negative pressure providing device is communicated with the vacuum port.
Drawings
Fig. 1 shows the structure of the present invention.
Description of the element reference numerals
1 push type pipeline reaction device
11 reaction cavity body
12 material propelling device
121 rotating shaft
1211 heat conducting liquid accommodating cavity
122 blade
13 heating device
131 jacket
14 vacuum port
2 Material storage device
3 crushing and sieving device
31 material crushing cavity
32 powder collecting cavity
33 mesh screen
34 rotor
4 negative pressure providing device
5 electric machine
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1, the utility model provides a reaction system for thermal dehydration into anhydride, comprising: the push type pipeline reaction device 1 comprises a reaction cavity body 11, a material pushing device 12 and a heating device 13 for adjusting the temperature in the reaction cavity body 11, wherein the material pushing device 12 is positioned in the reaction cavity body 11, and a vacuum port 14 is further arranged on the reaction cavity body 11; the material storage device 2 is communicated with a feeding hole of the push type pipeline reaction device 1; and the crushing and sieving device 3 is communicated with a discharge hole of the push type pipeline reaction device 1. The reaction system for thermal dehydration to anhydride provided by the utility model can place solid raw materials (for example, substituted phthalic acid, specifically 3,3',4,4' -biphenyl tetracarboxylic acid, 4,4' - (2,2, 2-trifluoro-1-trifluoromethyl) ethylene bis (1, 2-phthalic acid), 3',4,4' -diphenyl ether tetracarboxylic acid, etc., the raw materials are usually powder) in the material storage device 2, and continuously feed into the push-type pipeline reaction device 1, the temperature in the reaction cavity body 11 can be maintained through the heating device 13, the materials can be gradually pushed from the feed inlet to the discharge outlet through the material pushing device 12 in the reaction cavity body 11, and react in the process, negative pressure can be provided to the reaction cavity body 11 through the vacuum port 14, the generated water can be desorbed in a gas phase, and the reaction product can be introduced from the discharge port into the pulverizing and sieving apparatus 3 to be pulverized to provide a final product. The reaction equation of the reaction occurring in the reaction chamber body 11 may be one of the following:
the utility model provides an among the reaction system of thermal dehydration anhydride, heating device 13 among the impulse type pipeline reaction unit 1 can be including pressing from both sides cover 131 usually, it is equipped with liquid input port and liquid delivery outlet usually to press from both sides cover 131 to can be used for letting in heat-conducting liquid (for example, suitable temperature's silicon oil, water etc.) to can carry out the heat exchange with reaction cavity body 11. The jacket 131 may be generally located on the outer wall of the reaction chamber body 11 and disposed around the reaction chamber body 11, and sufficiently covers the outer wall of the reaction chamber body 11, so that heat exchange may be uniformly performed to the reaction chamber body 11 to control the internal temperature of the reaction chamber body 11.
The utility model provides an among the reaction system of thermal dehydration anhydride, among the impulse type pipeline reaction unit 1, reaction cavity body 11 extends the formation pipeline along certain direction usually, and the direction of propulsion of material in reaction cavity body 11 is unanimous with reaction cavity body 11's extending direction usually. The extending direction of the reaction chamber body 11 may be a generally horizontal direction to ensure stable advancement of the material, and generally, the shape of the reaction chamber body 11 may be a cylinder. The reaction cavity body 11 can be further provided with a feeding hole and a discharging hole, namely the feeding hole and the discharging hole are respectively a feeding hole and a discharging hole of the push type pipeline reaction device 1.
The utility model provides an among the reaction system of thermal dehydration anhydride, material advancing device 12 can be generally including pivot 121 and around pivot 121 evenly distributed's paddle 122, paddle 122 can be connected with pivot 121 usually to can drive pivot 121 through the motor 5 of being connected with pivot 121 and rotate, and drive the material through the paddle 122 of being connected with it and move along its extending direction in reaction cavity body 11 when pivot 121 rotates, and make the material intensive mixing, and fully react through paddle 122. By controlling the rotation speed of the rotating shaft 121, the residence time of the materials in the reaction cavity body 11 can be controlled, so that the materials are fully reacted. The extending direction of the rotating shaft 121 and the paddle 122 is generally the same as the extending direction of the reaction chamber body 11, the rotating shaft 121 may be a cylinder, and the paddle 122 may be a ribbon, a disc, and the like.
The utility model provides an among the reaction system of thermal dehydration adult anhydride, the extending direction of pivot 121 is unanimous with the extending direction of reaction cavity body 11 usually, pivot 121 can be hollow structure, and pivot 121 can hold the chamber 1211 including heat-conducting liquid promptly, the extending direction that heat-conducting liquid held the chamber 1211 is unanimous with the extending direction of pivot 121 usually, for example, heat-conducting liquid holds the liquid input port and the liquid delivery outlet of chamber 1211 and can be located the pivot respectively and be close to one side of feed inlet and pivot near the discharge gate to can hold the liquid input port of chamber 1211 through heat-conducting liquid and introduce pivot 121 with heat-conducting liquid (for example, suitable temperature's silicon oil, water etc.), and draw the pivot 121 with heat-conducting liquid through the liquid delivery outlet that heat-conducting liquid held the chamber 1211, in order to reach the thermal effect of material transmission in to the reactor through pivot 121. In a preferred embodiment of the present invention, the disc-shaped blade may be hollow, for example, may be a hollow blade, and the hollow cavity thereof may further be communicated with the heat conducting liquid accommodating cavity 1211, so as to introduce the heat conducting liquid into the blade, thereby achieving the effect of transferring heat to the material in the reactor through the blade.
The utility model provides an among the reaction system of thermal dehydration anhydride, can also be equipped with temperature measuring device in the reaction cavity body 11 to can guarantee that the reaction material in the reaction cavity body 11 maintains at suitable reaction temperature, specific reaction temperature can be for 150 ~ 250 ℃. The temperature measuring device may specifically be, for example, a thermometer or the like.
In the reaction system for thermal dehydration to anhydride provided by the present invention, the material storage device 2 is generally used for holding the reaction raw material. The material storage device 2 may be any container suitable for storing material, such as a material storage tank. The material storage device 2 is usually communicated with the feeding hole of the push type pipeline reaction device 1, and a feeder can be usually arranged on the communication pipeline of the material storage device 2 and the feed hole of the push type pipeline reaction device 1, the feeder is usually used for controlling the material introducing speed of the material storage device 2 to the push type pipeline reaction device 1, and the feeder can be usually a star feeder or the like. Generally, the material storage means 2 will be at a higher level than the impulse pipe reactor 1, so that gravity can be used to introduce the material into the impulse pipe reactor 1.
The utility model provides an among the reaction system of thermal dehydration anhydride, smash device 3 that sieves can include that comminuted cavity 31 and powder collect cavity 32, and comminuted cavity 31 and powder are collected and can be equipped with screen cloth 33 between cavity 32. The material crushing cavity 31 is usually provided with a feed inlet, through which the material crushing cavity 31 can be communicated with a discharge port of the push type pipeline reaction device 1, so that a reaction product of the push type pipeline reaction device 1 can be introduced into the material crushing cavity 31 and crushed. The crushed powder product can enter the powder collecting cavity 32 through the screen 33, a discharge port is usually arranged on the powder collecting cavity 32, and the powder product can be led out of the whole reaction system through the discharge port. In the pulverizing and sieving device 3, the horizontal height of the material pulverizing cavity 31 is usually lower than that of the material storage device 2, and the material pulverizing cavity 31 and the powder collecting cavity 32 can be distributed in sequence along the falling direction of the material, so that the reaction product of the push type pipeline reaction device 1 can be introduced into and drawn out of the pulverizing and sieving device 3 by gravity.
The utility model provides an among the reaction system of thermal dehydration anhydride, be equipped with rotor 34 in the comminuted cavity 31, rotor 34 can include rotor body and the tup that is located rotor body usually to when rotor body drives the tup and rotates, smash the material. The motion tracks of the rotor body and the hammer head are usually matched with the shape of the material crushing cavity 31, so that the materials in the cavity can be fully crushed. The size of the screen 33 can be adjusted by those skilled in the art, for example, the aperture of the screen 33 can be 30-80 mesh. In an embodiment of the present invention, the pulverizing and sieving device 3 may be a ZS-350 vibrating screen machine provided by okay drying.
The utility model provides an among the reaction system of thermal dehydration anhydride, can also include negative pressure provides device 4, negative pressure provides device 4 and vacuum port 14 intercommunication usually to can provide the negative pressure to reaction cavity body 11 through vacuum port 14, can break away from water with the gas phase mode that generates, atmospheric pressure in the concrete reaction cavity body 11 can <50 mmHg. The negative pressure supply device 4 may be a vacuum pump or the like.
The utility model provides a reaction unit of thermal dehydration anhydride-forming can realize solid feeding, the solid ejection of compact, and whole reaction process unit need not to introduce the solvent, and its reaction product can directly be drawn forth and pack, has saved manufacturing cost on the whole, and does benefit to the environmental protection more, has good industrialization prospect.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A reaction system for thermal dehydration to anhydride comprising:
the device comprises a push type pipeline reaction device (1), wherein the push type pipeline reaction device (1) comprises a reaction cavity body (11), a material pushing device (12) and a heating device (13) for adjusting the temperature in the reaction cavity body (11), the material pushing device (12) is positioned in the reaction cavity body (11), and a vacuum port (14) is further formed in the reaction cavity body (11);
the material storage device (2), the material storage device (2) is communicated with a feeding hole of the push type pipeline reaction device (1);
smash device (3) that sieves, smash device (3) that sieves includes comminuted cavity (31) and powder along the whereabouts direction of material in proper order and collect cavity (32), be equipped with rotor (34) in comminuted cavity (31), be equipped with screen cloth (33) between comminuted cavity (31) and powder collection cavity (32), the discharge gate intercommunication of comminuted cavity (31) and impulse type pipeline reaction unit (1).
2. The reaction system for thermal dehydration to anhydride according to claim 1, characterized in that said heating means (13) comprises a jacket (131) for feeding a heat-conducting liquid.
3. The reaction system for thermal dehydration to anhydride according to claim 2 characterized in that said jacket (131) is located on the outer wall of the reaction chamber body (11).
4. The reaction system for thermal dehydration to anhydride according to claim 1, characterized in that said material propelling means (12) comprises a rotating shaft (121) and paddles (122) evenly distributed around the rotating shaft (121).
5. The reaction system for thermal dehydration to anhydride according to claim 4, characterized in that said blades (122) are in the shape of a ribbon or disk.
6. The reaction system for thermal dehydration to anhydride according to claim 4, wherein the extension direction of said rotating shaft (121) is the same as the extension direction of the reaction chamber body (11), and said rotating shaft (121) comprises a heat conducting liquid receiving cavity (1211).
7. The reaction system for thermal dehydration to anhydride according to claim 1, wherein a temperature measuring device is further provided in said reaction chamber body (11).
8. The reaction system for thermal dehydration to anhydride according to claim 1, wherein a feeder is provided on the connecting pipe of the material storage device (2) and the push type pipe reaction device (1).
9. The reaction system for thermal dehydration to anhydride according to claim 1, wherein the mesh (33) has a pore size of 30 to 80 mesh.
10. The thermal dehydration to anhydride reaction system of claim 1 further comprising a negative pressure supply device (4), said negative pressure supply device (4) being in communication with a vacuum port (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380207.7U CN212283991U (en) | 2020-03-23 | 2020-03-23 | Reaction system for thermal dehydration into anhydride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020380207.7U CN212283991U (en) | 2020-03-23 | 2020-03-23 | Reaction system for thermal dehydration into anhydride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212283991U true CN212283991U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020380207.7U Active CN212283991U (en) | 2020-03-23 | 2020-03-23 | Reaction system for thermal dehydration into anhydride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212283991U (en) |
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2020
- 2020-03-23 CN CN202020380207.7U patent/CN212283991U/en active Active
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