CN217796079U - Chemical reaction dehydration device and chemical reaction device - Google Patents
Chemical reaction dehydration device and chemical reaction device Download PDFInfo
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- CN217796079U CN217796079U CN202221684300.2U CN202221684300U CN217796079U CN 217796079 U CN217796079 U CN 217796079U CN 202221684300 U CN202221684300 U CN 202221684300U CN 217796079 U CN217796079 U CN 217796079U
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Abstract
The utility model discloses a chemical reaction dewatering device relates to response device technical field, including dewatering device body and regenerating unit, dewatering device body and regenerating unit all are one at least, the import of each dewatering device body be used for with reation kettle's export intercommunication, this internal dehydration medium that is equipped with of each dewatering device, the hydroenergy that produces in the reaction in the reation kettle enough gets into at least one dewatering device body and by the dehydration medium absorption of this dewatering device body, water in the dehydration medium can be got rid of to each regenerating unit. The utility model also discloses a chemical reaction device, including reation kettle and foretell chemical reaction dewatering device, the import of each dewatering device body and reation kettle's export intercommunication. The utility model provides a chemical reaction dewatering device and chemical reaction device do benefit to and improve reaction efficiency and production efficiency, are favorable to reduction in production cost.
Description
Technical Field
The utility model relates to a reaction equipment technical field especially relates to a chemical reaction dewatering device and chemical reaction device.
Background
The dioctyl carbonate is an important organic chemical intermediate, has high lubricity, wear resistance, corrosion resistance, thermal oxidation stability, non-toxic and biodegradable properties, is a good novel carbonate lubricating oil base material, and can be applied to the industries of textiles, cosmetics and the like. The synthesis method of di-n-octyl carbonate mainly comprises a phosgene method, an oxidation carbonylation method, an ester exchange method, an octanol carbon dioxide direct synthesis method and the like. The raw materials used in the phosgene method contain severe toxicity, and the process equipment has serious corrosivity; the oxidation and carbonylation method generally uses noble metal compound catalysts such as palladium and the like, is difficult to recover and has high cost; the ester exchange method mainly adopts dialkyl carbonate (such as dimethyl carbonate) and n-octyl ester to synthesize di-n-octyl carbonate by ester exchange, the method adopts the dimethyl carbonate as a carbonylation raw material, no pollution is generated in the reaction process, the reaction condition is relatively mild, but the catalytic efficiency is relatively low; the di-n-octyl carbonate is synthesized by directly reacting octanol and carbon dioxide, rich, nontoxic and renewable carbon dioxide is used as a carbonyl source, and the only byproduct of the reaction is water, so the method is the most ideal synthesis method at present.
The reaction for synthesizing di-n-octyl carbonate by directly reacting octanol and carbon dioxide is limited by thermodynamics, and is a reversible reaction, and at present, a method of adding a dehydrating agent into a reaction material is mostly adopted to remove moisture generated in a reaction system, so that the reaction efficiency is improved. However, addition of a dehydrating agent causes a large amount of by-products, and also lowers the chemical selectivity of the target product, thereby failing to effectively improve the reaction efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a chemical reaction dewatering device and chemical reaction device to solve the problem that above-mentioned prior art exists, be favorable to improving reaction efficiency and production efficiency, be favorable to reduction in production cost.
In order to achieve the above purpose, the utility model provides a following scheme:
the utility model provides a chemical reaction dewatering device, including dewatering device body and regenerating unit, the dewatering device body with regenerating unit all is one at least, each the import of dewatering device body is used for and reation kettle's export intercommunication, each this internal dehydration medium that is equipped with of dewatering device, the hydroenergy that produces in the reaction in the reation kettle enough gets into at least one the dewatering device body is by this the dewatering device body the dehydration medium absorbs, each the regenerating unit can get rid of in the dehydration medium water.
Preferably, the chemical reaction dewatering device provided by the utility model also comprises at least one heat exchange device, each heat exchange device with reation kettle and at least one the dewatering device body is all connected, water can get into each by reation kettle's export heat exchange device and get into via each the heat exchange device the dewatering device body, each heat exchange device's medium can absorb the heat of water.
Preferably, each regeneration device comprises a first heating device, each first heating device is connected with at least one dehydration device body, and each first heating device can dry each dehydration medium.
Preferably, the regeneration device further comprises a purging device, an outlet of each purging device is communicated with an inlet of at least one dehydration device body, each purging device can blow gas into the inlet of the dehydration device body, the first heating device can dry the water in the dehydration medium into water vapor, and the gas can carry the water and/or the water vapor to be discharged from the outlet of each dehydration device body.
Preferably, the number of the dehydration device bodies and the number of the heat exchange devices are at least two, each dehydration device body is connected with each heat exchange device, and a switch valve is arranged on a pipeline between each dehydration device body and each heat exchange device and/or a pipeline between each heat exchange device and the reaction kettle.
The utility model provides a pair of chemical reaction device, include reation kettle and foretell chemical reaction dewatering device, each the import of dewatering device body and reation kettle's export intercommunication.
Preferably, the reaction kettle comprises a shell and a stirring device, the stirring device is connected with the shell, and the stirring device is used for stirring the liquid material in the shell.
Preferably, the reaction kettle further comprises a filtering device, the reaction kettle is provided with a discharge port, and the filtering device is fixedly connected to the discharge port of the reaction kettle.
Preferably, reation kettle still includes second heating device, temperature-detecting device and controlling means, second heating device with temperature-detecting device all with reation kettle fixed connection, just second heating device with temperature-detecting device all with controlling means fixed connection, second heating device is used for right reation kettle heats, temperature-detecting device is used for detecting temperature in reation kettle's the reaction chamber, controlling means can be based on temperature value in the reaction chamber that temperature-detecting device detected adjusts second heating device's output temperature.
Preferably, the reaction kettle is provided with a backflow port, and the outlet of each dehydration device body can be communicated with the backflow port.
The utility model discloses for prior art gain following technological effect:
the chemical reaction dehydration device and the chemical reaction device provided by the utility model can absorb water generated in the reaction through the dehydration medium, thereby promoting the forward proceeding of the equilibrium reaction, avoiding the reversible reaction between the product to be recovered and water, and improving the reaction efficiency; when the water content in the dehydration medium reaches a certain degree, the water in the dehydration medium can be removed through the regeneration device, so that the dehydration medium can be recycled, the dehydration medium does not need to be replaced, time and labor are saved, and the production cost is reduced; the utility model discloses well reation kettle and dewatering device body mutually independent operation have avoided going on of dehydration medium influence reaction, and then have avoided producing the accessory substance owing to add dehydration medium, simultaneously, need not to consider the separation of dehydration medium, accessory substance and reaction product, have further improved work efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 showing the structure of a chemical reaction dehydration apparatus in example 1;
FIG. 2 is a schematic view showing the structure of a chemical reaction water apparatus in example 2;
in the figure: 100. a chemical reaction dehydration device; 200. a chemical reaction device; 1. a dewatering device body; 2. a regeneration device; 201. a first heating device; 202. a purging device; 3. a reaction kettle; 301. a housing; 302. a stirring device; 303. a filtration device; 304. a discharge port; 305. a second heating device; 306. a temperature detection device; 307. a control device; 308. a return port; 4. a dewatering medium; 5. a heat exchange device; 6. and (4) switching on and off the valve.
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.
The utility model aims at providing a chemical reaction dewatering device and chemical reaction device to solve the problem that above-mentioned prior art exists, be favorable to improving reaction efficiency and production efficiency, be favorable to reduction in production cost.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in FIG. 1, the present embodiment provides a chemical reaction dehydration apparatus 100 comprising a dehydration apparatusBody 1 and regenerating unit 2, dewatering device body 1 and regenerating unit 2 all are one at least, each dewatering device body 1 import be used for with reation kettle 3's export intercommunication, be equipped with dehydration medium 4 in each dewatering device body 1, the water that produces in the reaction in the reation kettle 3 can get into at least one dewatering device body 1 and by the dehydration medium 4 absorption of this dewatering device body 1, each regenerating unit 2 can get rid of the water in the dehydration medium 4. The dehydration medium 4 can absorb water generated in the reaction, so that the forward proceeding of the equilibrium reaction is promoted, the reversible reaction between the product to be recovered and water is avoided, and the reaction efficiency is improved; when the water content in the dehydration medium 4 reaches a certain degree, the water in the dehydration medium 4 can be removed through the regeneration device 2, so that the dehydration medium 4 can be recycled, the dehydration medium 4 does not need to be replaced, time and labor are saved, and the production cost is reduced; the utility model discloses well reation kettle 3 and the mutual independent operation of dewatering device body 1 have avoided going on of 4 influence reactions of dehydration medium, and then have avoided producing the accessory substance owing to add dehydration medium 4, simultaneously, need not to consider the separation of dehydration medium 4, accessory substance and reaction product, have further improved work efficiency. The dewatering medium 4 is preferably
The molecular sieve and the regeneration device 2 are preferably connected with the dehydration device body 1 through a flange.
The chemical reaction dehydration device 100 provided by this embodiment further includes at least one heat exchange device 5, each heat exchange device 5 is connected to the reaction kettle 3 and the at least one dehydration device body 1, the mixed material steam in the reaction kettle 3 containing water can enter each heat exchange device 5 from the outlet of the reaction kettle 3 and enter the dehydration device body 1 through each heat exchange device 5, the heat exchange medium of each heat exchange device 5 can liquefy the mixed material steam flowing out of the reaction kettle 3, so as to promote the rapid circulation of the materials in the system and accelerate the dehydration process, preferably, the heat exchange medium of each heat exchange device 5 and the material steam flow in the reverse direction, so that the mixed material steam flowing out of the reaction kettle 3 can liquefy more rapidly; meanwhile, the heat exchange medium of each heat exchange device 5 can also absorb the heat of water, so that the reaction heat is recycled, and the device is energy-saving and environment-friendly.
Each regeneration device 2 includes a first heating device 201, each first heating device 201 is connected to at least one dehydration device main body 1, and each first heating device 201 can dry each dehydration medium 4. When the water content in the dehydration medium 4 reaches a certain degree, the water in the dehydration medium 4 can be removed through the first heating device 201, so that the dehydration effect of the dehydration device is ensured; and the dehydration medium 4 is recycled, the dehydration medium 4 does not need to be replaced, time and labor are saved, and the production cost is reduced. The first heating means 201 is preferably electric tracing.
The regeneration device 2 further comprises purging devices 202, an outlet of each purging device 202 is communicated with an inlet of at least one dehydration device body 1, each purging device 202 can blow gas into the inlet of the dehydration device body 1, the first heating device 201 can dry water in the dehydration medium 4 into water vapor, and the gas can carry the water and the water vapor to be discharged from the outlet of each dehydration device body 1. The gas is preferably N 2 The blowing device 202 and the first heating device 201 work together to remove water in the dehydration medium 4 quickly, and the dehydration effect and the dehydration efficiency are improved.
The dehydration device bodies 1 and the heat exchange devices 5 are at least two, each dehydration device body 1 is connected with each heat exchange device 5, and a switch valve 6 is arranged on a pipeline between each dehydration device body 1 and each heat exchange device 5 and/or a pipeline between each heat exchange device 5 and the reaction kettle 3. Set up a plurality of parallel dewatering device bodies 1 and the 5 groups of heat transfer device that communicate each other, reation kettle 3, each group dewatering device body 1 and the 5 mutual independence of heat transfer device and simultaneous working of heat transfer device are favorable to raising the efficiency. When the water content in the dehydration medium 4 in one or more dehydration device bodies 1 reaches a certain degree, the switch valve 6 between the dehydration device body 1 and the reaction kettle 3 is closed, and then the regeneration device 2 is opened to perform dehydration regeneration on the dehydration medium 4. Meanwhile, in the process of dehydrating the dehydrating medium 4 by the regenerating device 2, the switching valve 6 between at least one dehydrating device body 1 and the reaction kettle 3 is ensured to be kept in an open state, and the reaction is ensured to be continuously and efficiently carried out. The number of the heat exchange devices 5 and the number of the dehydrating device bodies 1 can be set according to the applicable material scale and the kettle body size of the reactor, so that the dehydrating regeneration of the dehydrating agents switched in turn is realized.
Each heat exchange device 5 is provided with a first circulation cavity and a second circulation cavity, an inlet of each first circulation cavity is communicated with an outlet of the reaction kettle 3 body, an outlet of each first circulation cavity is communicated with an inlet of the dehydration device body 1, reaction products and raw materials can enter the first circulation cavity through the outlet of the reaction kettle 3 body and the inlet of the first circulation cavity, cooling media flow in the second circulation cavity, and the cooling media can absorb heat of the reaction products and the raw materials flowing through the first circulation cavity when flowing through the second circulation cavity and flow out of the heat exchange device 5 through the outlet of the second circulation cavity. The cooling medium is preferably water.
Example 2
As shown in fig. 2, the present embodiment provides a chemical reaction apparatus 200, which includes a reaction vessel 3 and the chemical reaction dehydration apparatus 100 of embodiment 1, wherein the inlet of each dehydration apparatus body 1 is communicated with the outlet of the reaction vessel 3.
The reaction kettle 3 comprises a casing 301 and a stirring device 302, wherein the stirring device 302 is connected with the casing 301, and the stirring device 302 is used for stirring the liquid material in the casing 301. The reaction speed is accelerated, and the reaction is more complete. The material of reaction vessel 3 and stirring apparatus 302 is preferably stainless steel.
The reaction kettle 3 further comprises a filtering device 303, the reaction kettle 3 is provided with a discharge port 304, and the filtering device 303 is fixedly connected to the discharge port 304 of the reaction kettle 3. The filtering device 303 is preferably a filter screen, the filtering precision is 0.5 micron, and the precision requirement of solid-liquid separation can be completely realized. The discharge port 304 is used for discharging the liquid after the reaction in the reaction kettle 3, the filtering device 303 can ensure that the catalyst is not discharged from the discharge port 304, so that the catalyst is prevented from running off, and the catalyst can be left in the reaction kettle 3 for recycling. The discharged liquid mainly comprises the target product and a small amount of unconverted raw materials, and the liquid is further purified to obtain the product meeting the requirements.
The reaction vessel 3 has a return port 308, and the outlet of each dehydration device main body 1 can communicate with the return port 308. Products generated in the reaction process in the reaction kettle 3 and raw materials in the reaction kettle 3 can enter each dehydration device body 1, the reaction products comprise water and products to be recovered, and the products to be recovered and the raw materials can flow to the reaction kettle 3 through the outlet and the backflow port 308 of each dehydration device body 1. The utilization rate of the raw materials is improved, and the waste of products and raw materials is avoided.
The utility model is suitable for a mode through chemical reaction obtains the condition that result and accessory substance contain water and this reaction is reversible reaction, like octanol and carbon dioxide direct reaction synthesis di-n-octyl carbonate, and concrete working process is as follows:
adding catalyst into reaction kettle 3, pumping octanol into reaction kettle 3 through feed pump, filling particles
Molecular sieves are put into the dehydration device bodies 1, and carbon dioxide is introduced into the reaction kettle 3.
The reaction kettle 3 is heated to a temperature of 200 ℃ by the second heating device 305, the stirring device 302 is started to stir, and after the temperature is stabilized, cooling water is introduced into the second circulation cavities of the heat exchange devices 5.
After the reaction is finished, standing until the catalyst is settled at the bottom of the kettle, opening a liquid discharge valve, discharging liquid materials after filtering by a filtering device 303, further purifying the received liquid, and finally obtaining a pure target product, namely dioctyl carbonate.
Closing the liquid discharging valve and continuing to feed and react.
After reacting for a certain circulation period, when the water content in the dehydration medium 4 reaches a certain degree, the reaction efficiency is slightly reduced, the switch valve 6 of the corresponding dehydration device body 1 is closed, the regeneration device 2 is started, the corresponding dehydration device body 1 is heated, and meanwhile, nitrogen purging is started, so that the drying and regeneration of the dehydration medium 4 in the corresponding dehydration device body 1 are realized.
The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for those skilled in the art, the idea of the present invention may be changed in the specific embodiments and the application range. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (10)
1. A chemical reaction dewatering device is characterized in that: the dehydration device comprises at least one dehydration device body and at least one regeneration device, wherein an inlet of each dehydration device body is communicated with an outlet of a reaction kettle, a dehydration medium is arranged in each dehydration device body, water generated in the reaction process in the reaction kettle can enter at least one dehydration device body and is absorbed by the dehydration medium of the dehydration device body, and each regeneration device can remove the water in the dehydration medium.
2. The chemical reaction dehydration apparatus of claim 1 characterized in that: the heat exchange device comprises a reaction kettle, a dehydrating device body and at least one heat exchange device, wherein the reaction kettle is connected with the dehydrating device body, the dehydrating device body is connected with the reaction kettle, the water can enter the dehydrating device body through the heat exchange devices, and the medium of each heat exchange device can absorb the heat of the water.
3. The chemical reaction dehydration apparatus of claim 1 characterized in that: each regeneration device comprises a first heating device, each first heating device is connected with at least one dehydration device body, and each first heating device can dry each dehydration medium.
4. A chemical reaction dehydration apparatus according to claim 3 characterized in that: the regeneration device further comprises purging devices, an outlet of each purging device is communicated with an inlet of at least one dehydration device body, each purging device can blow gas into the inlet of the dehydration device body, the first heating device can dry the water in the dehydration medium into water vapor, and the gas can carry the water and/or the water vapor to be discharged from the outlet of each dehydration device body.
5. The chemical reaction dehydration apparatus of claim 2 characterized in that: the dehydration device comprises dehydration device bodies and heat exchange devices, wherein the dehydration device bodies and the heat exchange devices are at least two, each dehydration device body is connected with each heat exchange device, and a switch valve is arranged on a pipeline between each dehydration device body and each heat exchange device and/or a pipeline between each heat exchange device and the reaction kettle.
6. A chemical reaction apparatus, characterized by: the chemical reaction dehydration device comprises a reaction kettle and the chemical reaction dehydration device of any one of claims 1 to 5, wherein the inlet of each dehydration device body is communicated with the outlet of the reaction kettle.
7. The chemical reaction device as claimed in claim 6, wherein: the reaction kettle comprises a shell and a stirring device, wherein the stirring device is connected with the shell, and the stirring device is used for stirring liquid materials in the shell.
8. The chemical reaction device as claimed in claim 6, wherein: the reaction kettle further comprises a filtering device, the reaction kettle is provided with a discharge port, and the filtering device is fixedly connected to the discharge port of the reaction kettle.
9. The chemical reaction device of claim 6, wherein: the reaction kettle further comprises a second heating device, a temperature detection device and a control device, the second heating device and the temperature detection device are all fixedly connected with the reaction kettle, the second heating device and the temperature detection device are all fixedly connected with the control device, the second heating device is used for heating the reaction kettle, the temperature detection device is used for detecting the temperature in a reaction cavity of the reaction kettle, and the control device can adjust the temperature value in the reaction cavity according to the temperature detection device.
10. The chemical reaction device as claimed in claim 6, wherein: the reaction kettle is provided with a backflow port, and the outlet of each dehydration device body can be communicated with the backflow port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221684300.2U CN217796079U (en) | 2022-07-01 | 2022-07-01 | Chemical reaction dehydration device and chemical reaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221684300.2U CN217796079U (en) | 2022-07-01 | 2022-07-01 | Chemical reaction dehydration device and chemical reaction device |
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| CN217796079U true CN217796079U (en) | 2022-11-15 |
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| CN202221684300.2U Active CN217796079U (en) | 2022-07-01 | 2022-07-01 | Chemical reaction dehydration device and chemical reaction device |
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