CN217164348U - Reactor low-temperature water temperature control device - Google Patents
Reactor low-temperature water temperature control device Download PDFInfo
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- CN217164348U CN217164348U CN202220853737.8U CN202220853737U CN217164348U CN 217164348 U CN217164348 U CN 217164348U CN 202220853737 U CN202220853737 U CN 202220853737U CN 217164348 U CN217164348 U CN 217164348U
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Abstract
The utility model relates to a low-temperature water temperature control device of a reactor, belonging to the technical field of etherification reaction devices; the system comprises an etherification reactor, a steam heat exchanger and a low-temperature water heat exchanger, wherein the steam heat exchanger and the low-temperature water heat exchanger are connected in parallel, the steam heat exchanger is connected with a circulating water pipeline through a steam circulating inlet pipeline, the circulating water pipeline is connected with the etherification reactor through an etherification outlet pipeline, and the low-temperature water heat exchanger is connected with the circulating water pipeline through a low-temperature water circulating inlet pipeline; the front ends of the steam circulation inlet pipeline and the low-temperature water circulation inlet pipeline are respectively provided with a steam circulating valve and a low-temperature water circulating valve; the circulating water is cooled by using low-temperature water, so that the temperature of the circulating water is lower, and the etherification reactor can be quickly cooled to the required temperature; the steam circulating valve and the low-temperature water circulating valve switch heating and cooling of the etherification reactor, and heating hot water and cooling cold water share one set of circulating water pipe network, so that cold sources and heat sources can be switched at will, and the operation efficiency is improved.
Description
Technical Field
The utility model relates to a reactor low temperature water temperature control device belongs to etherification reaction unit technical field.
Background
The alkalization reaction required in the production step of the cellulose ether product is about 20-30 ℃, and after the feeding of the last batch is finished, the temperature in the reactor is about 75-90 ℃, so the temperature reduction operation is required before the alkalization reaction. As shown in fig. 1, the original scheme is that circulating water is used for cooling, the cooling speed is slow, the productivity is affected, and in summer high-temperature weather, the temperature of the circulating water is higher than 30 ℃, so that the temperature cannot be reduced to the process required temperature, the alkalization reaction of the product is insufficient, and the product quality is affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reactor low-temperature water temperature control device, which shortens the overall cooling time of the reactor and brings the productivity into full play; and the temperature is ensured to be reduced to below 30 ℃, so that the reaction process is more stable, namely the product quality is more stable.
The utility model relates to a reactor low-temperature water temperature control device, which comprises an etherification reactor, a steam heat exchanger and a low-temperature water heat exchanger, wherein the steam heat exchanger is connected with the low-temperature water heat exchanger in parallel, the steam heat exchanger is connected with a circulating water pipeline through a steam circulation inlet pipeline, the circulating water pipeline is connected with the etherification reactor through an etherification outlet pipeline, and the low-temperature water heat exchanger is connected with the circulating water pipeline through a low-temperature water circulation inlet pipeline; and the front ends of the steam circulation inlet pipeline and the low-temperature water circulation inlet pipeline are respectively provided with a steam circulating valve and a low-temperature water circulating valve.
The steam heat exchanger is used for heating up circulating water in the steam circulation inlet pipeline and then heating the etherification reactor, and the low-temperature water heat exchanger is used for cooling down circulating water in the low-temperature water circulation inlet pipeline and then cooling the etherification reactor. The circulating water is cooled by using the low-temperature water, so that the temperature of the circulating water is lower, and the etherification reactor can be quickly cooled to the required temperature. The steam circulating valve and the low-temperature water circulating valve switch heating and cooling of the etherification reactor, and heating hot water and cooling cold water share one set of circulating water pipe network, so that cold sources and heat sources can be switched at will, the operation efficiency is improved, and meanwhile, the project investment is saved.
Preferably, the low-temperature water heat exchanger adopts low-temperature water at the temperature of 6-8 ℃ to cool circulating water flowing in a low-temperature water circulating inlet pipeline.
The temperature range of the low-temperature water at 6-8 ℃ is reasonable, and the cooling effect of the etherification reactor is improved.
Preferably, the low-temperature water heat exchanger adopts seven-degree water to cool circulating water flowing into a low-temperature water circulation inlet pipeline.
The temperature of the water with seven degrees centigrade is more reasonable, and the cooling effect of the etherification reactor is further improved.
Preferably, the steam heat exchanger and the low-temperature water heat exchanger are respectively connected with the etherification inlet pipeline through a steam circulation outlet pipeline and a low-temperature water circulation outlet pipeline.
The steam circulation outlet pipeline and the low-temperature water circulation outlet pipeline are connected to the etherification inlet pipeline, so that the circulating water is an internal circulation pipeline, and the cold loss is reduced to the minimum.
Preferably, a circulating pump is installed on the etherification inlet pipeline.
The circulating pump is used for providing power to enable circulating water to enter the etherification reactor.
Preferably, the front end of the etherification inlet pipeline is also connected with a circulating cooling water pipe, and the circulating cooling water pipe is connected with a circulating cooling water header pipe; and the etherification outlet pipeline is also connected with a cooling water return pipeline, and the cooling water return pipeline is connected with a circulating cooling water header pipe.
And the cooling water return pipeline is used for conveying the circulating cooling water which is used for cooling the etherification reactor to the circulating cooling water main pipe for cooling, and the circulating cooling water pipe is used for conveying the circulating cooling water which is cooled by the circulating cooling water main pipe to the etherification inlet pipeline for cooling the etherification reactor.
Compared with the prior art, the technical scheme has the following advantages:
a reactor low temperature water temperature control device, cool down the circulating water through using low temperature water, make circulating water temperature lower, can be more quick with etherifying the reactor fall to demand temperature, simultaneously, the circulating water is the inner loop pipeline, falls cold volume loss to minimumly. The steam circulating valve and the low-temperature water circulating valve switch heating and cooling of the etherification reactor, and heating hot water and cooling cold water share one set of circulating water pipe network, so that cold sources and heat sources can be switched at will, the operation efficiency is improved, and meanwhile, the project investment is saved.
Drawings
FIG. 1 is a schematic structural diagram of a cooling scheme of a conventional reactor in the background art of the present invention;
fig. 2 is a schematic structural diagram of the reactor low-temperature water temperature control device of the present invention.
In the figure: 1. an etherification reactor; 2. a steam heat exchanger; 3. a low temperature water heat exchanger; 4. a steam cycle inlet line; 5. a circulating water line; 6. an etherification outlet line; 7. a low-temperature water circulation inlet pipeline; 8. a vapor circulation valve; 9. a low temperature water circulation valve; 10. a steam circulation outlet pipeline; 11. a low-temperature water circulation outlet pipeline; 12. an etherification inlet pipeline; 13. a circulation pump; 14. A circulating cooling water pipe; 15. a circulating cooling water main pipe; 16. a cooling water return pipeline; 17. a steam pipeline.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in fig. 2, the utility model provides a reactor low temperature water temperature control device, including etherification reactor 1, steam heat exchanger 2 and low temperature water heat exchanger 3 are parallelly connected, steam heat exchanger 2 connects circulating water pipeline 5 through steam circulation inlet pipeline 4, circulating water pipeline 5 connects etherification reactor 1 through etherification outlet pipeline 6, low temperature water heat exchanger 3 connects circulating water pipeline 5 through low temperature water circulation inlet pipeline 7; the front ends of the steam circulation inlet pipeline 4 and the low-temperature water circulation inlet pipeline 7 are respectively provided with a steam circulating valve 8 and a low-temperature water circulating valve 9.
The steam heat exchanger 2 is used for heating the etherification reactor 1 after heating up the circulating water in the steam circulation inlet pipeline 4, and the low-temperature water heat exchanger 3 is used for cooling down the circulating water in the low-temperature water circulation inlet pipeline 7 and then cooling the etherification reactor 1. By using low-temperature water to cool the circulating water, the temperature of the circulating water is lower, and the etherification reactor 1 can be quickly cooled to the required temperature. The steam circulating valve 8 and the low-temperature water circulating valve 9 switch heating and cooling of the etherification reactor 1, and heating hot water and cooling cold water share a set of circulating water pipe network, so that cold sources and heat sources can be switched at will, the operation efficiency is improved, and meanwhile, the project investment is saved.
Further, the low-temperature water heat exchanger 3 adopts low-temperature water of 6-8 ℃ to cool the circulating water flowing in the low-temperature water circulating inlet pipeline 7.
The temperature of the etherification reactor 1 is reduced by using the cooling water lower than the temperature of the circulating water, so that the overall cooling time of the etherification reactor 1 is shortened, and the productivity is exerted to the maximum extent; the temperature of the etherification reactor 1 is not restricted by the conditions of external room temperature and the like, and is accurately reduced to below 30 ℃, so that the reaction process is more stable, namely the product quality is more stable. The temperature range of the low-temperature water of 6-8 ℃ is reasonable, and the cooling effect of the etherification reactor 1 is improved.
Furthermore, the low-temperature water heat exchanger 3 adopts seven-degree water to cool the circulating water flowing in the low-temperature water circulating inlet pipeline 7.
The temperature of the water with seven degrees centigrade is more reasonable, and the cooling effect of the etherification reactor 1 is further improved.
Specifically, the steam heat exchanger 2 and the low-temperature water heat exchanger 3 are respectively connected with an etherification inlet pipeline 12 through a steam circulation outlet pipeline 10 and a low-temperature water circulation outlet pipeline 11.
The steam circulation outlet pipeline 10 and the low-temperature water circulation outlet pipeline 11 are connected to the etherification inlet pipeline 12, so that the circulating water is an internal circulation pipeline, and the cold loss is reduced to the minimum.
The front end of the etherification inlet pipeline 12 is also connected with a circulating cooling water pipe 14, and the circulating cooling water pipe 14 is connected with a circulating cooling water header pipe 15; the etherification outlet pipeline 6 is also connected with a cooling water return pipeline 16, and the cooling water return pipeline 16 is connected with a circulating cooling water header pipe 15.
The cooling water return pipeline 16 is used for conveying the circulating cooling water which is used for cooling the etherification reactor 1 to the circulating cooling water header pipe 15 for cooling, and the circulating cooling water pipe 14 is used for conveying the circulating cooling water which is cooled by the circulating cooling water header pipe 15 to the etherification inlet pipeline 12 for cooling the etherification reactor 1.
Here, the circulating water in the circulating cooling water header 15 is subjected to evaporation cooling in the form of a cooling tower or the like.
In order to provide power for circulating water to enter the etherification reactor 1, a circulating pump 13 is installed on the etherification inlet pipeline 12.
A reactor low temperature water temperature control device, the working process as follows:
when the temperature needs to be reduced, circulating water in the circulating cooling water header pipe 15 is evaporated and cooled in the form of a water cooling tower and the like, and the evaporated and cooled circulating cooling water sequentially enters the etherification reactor 1 through the circulating cooling water pipe 14 and the etherification inlet pipeline 12 to be cooled and cooled; when the temperature needs to be quickly reduced or the cooling water cannot be reduced to the process required temperature, the low-temperature water circulating valve 9 is opened, the circulating water which is used for cooling the etherification reactor 1 sequentially enters the low-temperature water heat exchanger 3 through the etherification outlet pipeline 6, the circulating water pipeline 5 and the low-temperature water circulating inlet pipeline 7, the circulating water which is used for cooling the etherification reactor 1 sequentially enters the etherification reactor 1 through the low-temperature water circulating outlet pipeline 11 and the etherification inlet pipeline 12 for cooling, and the low-temperature water circulating valve 9 is closed after the temperature reduction is completed. When the temperature needs to be raised, the steam circulating valve 8 is opened, the circulating water which heats the etherification reactor 1 is fed into the steam heat exchanger 2 through the etherification outlet pipeline 6, the circulating water pipeline 5 and the steam circulating inlet pipeline 4 in sequence, the circulating water is heated through the steam and then fed into the etherification reactor 1 through the steam circulating outlet pipeline 10 and the etherification inlet pipeline 12 in sequence for heating, and the steam circulating valve 8 is closed after the temperature is raised.
Claims (6)
1. The utility model provides a reactor low temperature water temperature control device which characterized in that: the device comprises an etherification reactor (1), a steam heat exchanger (2) and a low-temperature water heat exchanger (3), wherein the steam heat exchanger (2) and the low-temperature water heat exchanger (3) are connected in parallel, the steam heat exchanger (2) is connected with a circulating water pipeline (5) through a steam circulation inlet pipeline (4), the circulating water pipeline (5) is connected with the etherification reactor (1) through an etherification outlet pipeline (6), and the low-temperature water heat exchanger (3) is connected with the circulating water pipeline (5) through a low-temperature water circulation inlet pipeline (7); the front ends of the steam circulation inlet pipeline (4) and the low-temperature water circulation inlet pipeline (7) are respectively provided with a steam circulating valve (8) and a low-temperature water circulating valve (9).
2. The reactor low-temperature water temperature control device according to claim 1, characterized in that: the low-temperature water heat exchanger (3) adopts low-temperature water with the temperature of 6-8 ℃ to cool circulating water flowing in the low-temperature water circulating inlet pipeline (7).
3. The reactor low-temperature water temperature control device according to claim 2, characterized in that: the low-temperature water heat exchanger (3) adopts seven-degree water to cool circulating water flowing in the low-temperature water circulating inlet pipeline (7).
4. The reactor low-temperature water temperature control device according to any one of claims 1 to 3, wherein: the steam heat exchanger (2) and the low-temperature water heat exchanger (3) are respectively connected with an etherification inlet pipeline (12) through a steam circulation outlet pipeline (10) and a low-temperature water circulation outlet pipeline (11).
5. The reactor low-temperature water temperature control device according to claim 4, wherein: and a circulating pump (13) is arranged on the etherification inlet pipeline (12).
6. The reactor low-temperature water temperature control device according to claim 4, wherein: the front end of the etherification inlet pipeline (12) is also connected with a circulating cooling water pipe (14), and the circulating cooling water pipe (14) is connected with a circulating cooling water main pipe (15); the etherification outlet pipeline (6) is also connected with a cooling water return pipeline (16), and the cooling water return pipeline (16) is connected with a circulating cooling water header pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220853737.8U CN217164348U (en) | 2022-04-13 | 2022-04-13 | Reactor low-temperature water temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220853737.8U CN217164348U (en) | 2022-04-13 | 2022-04-13 | Reactor low-temperature water temperature control device |
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| Publication Number | Publication Date |
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| CN217164348U true CN217164348U (en) | 2022-08-12 |
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| CN202220853737.8U Active CN217164348U (en) | 2022-04-13 | 2022-04-13 | Reactor low-temperature water temperature control device |
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- 2022-04-13 CN CN202220853737.8U patent/CN217164348U/en active Active
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