CN216573131U - Pneumatic control type internal heat-taking equipment - Google Patents
Pneumatic control type internal heat-taking equipment Download PDFInfo
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- CN216573131U CN216573131U CN202122556160.2U CN202122556160U CN216573131U CN 216573131 U CN216573131 U CN 216573131U CN 202122556160 U CN202122556160 U CN 202122556160U CN 216573131 U CN216573131 U CN 216573131U
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Abstract
The utility model discloses a pneumatic control type internal heat-taking device, which belongs to the technical field of petrochemical industry and aims to solve the problems that the operation is carried out by using pressurized air, the operation cost and the energy consumption of the device are high, the heat-taking area is fixed, and the heat-taking load cannot be adjusted; through the arrangement of the internal heat taking pipe bundle, the pipe bundle jacket, the fluidized air distributor, the fluidized air branch pipeline and the catalyst outlet, when fluidized air is blocked, a catalyst is fully piled in the pipe bundle jacket to form a 'dead bed', heat in the regenerator is only conducted to the internal heat taking pipe bundle through the catalyst layer, the heat taking amount is small at the moment, after the fluidized air is started, the catalyst in the pipe bundle jacket is in a fluidized state, hot catalyst enters from a cold catalyst inlet at the upper part of the pipe bundle jacket and is discharged from an L-shaped catalyst outlet after being in contact with the internal heat taking pipe bundle for heat exchange, the heat taking area and the heat removal load can be adjusted by changing the number of the internal heat taking pipe bundle, meanwhile, main regeneration air can be used, the operation cost is saved, the energy consumption of the device is reduced, and the requirement for adjusting the heat taking load is completely met.
Description
Technical Field
The utility model relates to the technical field of petrochemical industry, in particular to pneumatic control type internal heat-taking equipment.
Background
In the production processes of catalytic cracking (FCC), fluidized bed Methanol To Olefins (MTO), and the like, coke generated after the reaction of raw materials adheres to the catalyst, and the activity of the catalyst is lowered. In order to maintain the reactivity of the catalyst, coke on the catalyst needs to be burned off in a regenerator, and the burned catalyst is called regenerated catalyst. Because the catalyst is burnt to emit a large amount of sensible heat, the excess heat in the regenerator needs to be continuously taken out, the temperature of the regenerator is controlled, and the high-temperature inactivation of the catalyst caused by overhigh regeneration temperature is prevented. The excess heat of the regenerator is taken out by two heat-taking devices, namely an inner heat-taking device and an outer heat-taking device.
Because the heat load of the existing inner heat collector can not be adjusted, the heat load of the existing FCC device and the MTO device is adjusted by installing an outer heat collector, and the redundant heat in the regenerator is taken out. The whole external heat collector system is outside the external heat collecting equipment body, and is provided with auxiliary facilities such as an equipment frame, a platform, a catalyst circulating pipe, a spring support and the like, and is also required to be matched with public works such as a booster fan and the like, so that the system investment is large, and the operation cost is high and the energy consumption of the device is increased due to the use of the booster air for operation.
Chinese patent CN105820831A discloses a method and apparatus for cooling regenerated catalyst, which adopts the technical scheme that the catalyst cooler is provided with a plurality of heat-taking tube bundles and catalyst return ports, the apparatus structure is complex, and the fluidized air and catalyst delivery air still adopt compressed air operation.
Chinese patent CN108224821A discloses an internal heat-extraction device and a chemical system using the same, which adopts the technical scheme that a heat-extraction tube bundle is enclosed into an independent space by a partition plate, and the heat-extraction load of the internal heat-extractor is adjusted by using fluidizing air and an air control valve.
In the existing internal heat-taking technology, a heat-taking tube bundle is directly installed in a regenerator, and because the heat-taking area is fixed, the heat-taking load cannot be adjusted, and the production fluctuation caused by the change of raw materials and products cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the problems in the prior art, the utility model discloses a pneumatic control type internal heat-taking device which adopts the technical scheme that the pneumatic control type internal heat-taking device comprises an internal heat-taking pipe bundle, a pipe bundle jacket, a fluidized air distributor, a fluidized air branch pipeline, a pipe bundle jacket bottom, a catalyst outlet, a cold catalyst inlet, a water inlet pipeline, a water vapor outlet pipeline and a regenerator, wherein the regenerator is internally provided with the pipe bundle jacket, the heat exchange and flow of a catalyst can be facilitated through the arrangement of the pipe bundle jacket, the internal heat-taking pipe bundle is fixedly connected to the inner wall of the pipe bundle jacket, the heat of the high-temperature catalyst can be absorbed through the arrangement of the internal heat-taking pipe bundle, the heat-taking function is realized, one end of the internal heat-taking pipe bundle is positioned outside the regenerator and is provided with the water inlet pipeline, the top of the internal heat-taking pipe bundle is provided with the water vapor outlet pipeline, and the water vapor outlet pipeline are arranged, so that water and water vapor can be conveniently added into and discharged from the internal heat-taking pipe bundle, the top of the tube bundle jacket is provided with a cold catalyst inlet, one side of the bottom of the tube bundle jacket is provided with a catalyst outlet, the circulation of catalyst heat exchange can be facilitated through the arrangement of the cold catalyst inlet and the catalyst outlet, a fluidized air distributor is arranged below the inner heat taking tube bundle at the bottom of the tube bundle jacket, one end of the fluidized air distributor is positioned outside the regenerator and is connected with a fluidized air branch pipeline, and through the arrangement of the fluidized air distributor and the fluidized air branch pipeline, the circulation of the catalyst can be accelerated by utilizing fluidized air, and meanwhile, main regeneration air can be used, so that the operation cost is saved, and the energy consumption of the device is reduced.
As a preferred technical scheme of the utility model, the internal heat extraction pipe bundle is a sleeve type heat extraction pipe, the internal heat extraction pipe bundle is of an L-shaped structure, and the heat conduction efficiency of the sleeve type internal heat extraction pipe bundle can be improved.
In a preferred embodiment of the present invention, the tube bundle jacket is circular, or square or other shapes, and tube bundle jackets of various shapes can be used to adapt to different regenerators.
As a preferred technical scheme of the utility model, the tube bundle jacket can be connected with the inner wall of the regenerator to form an independent space structure.
As a preferred technical scheme of the utility model, the catalyst outlet protrudes out of one side of the bottom of the tube bundle jacket, the catalyst outlet is L-shaped, the L-shaped catalyst outlet can fully pile the catalyst in the tube bundle jacket to form a 'dead bed' when fluidized air is not introduced, heat in the regenerator is only transferred to the internal heat-taking tube bundle through the catalyst layer, the heat-taking amount is very small at the moment, the catalyst in the tube bundle jacket is in a fluidized state after the fluidized air is started, and the hot catalyst in the regenerator enters from a cold catalyst inlet at the upper part of the tube bundle jacket and is discharged from the catalyst outlet after contacting and heat exchanging with the internal heat-taking tube bundle.
As a preferable technical scheme of the utility model, the internal heat extraction pipe bundles are arranged independently or in a plurality of groups in parallel, and different regenerators can be used for the internal heat extraction pipe bundles which are arranged independently and in the plurality of groups in parallel.
As a preferred technical solution of the present invention, the fluidized air distributor is of an annular or dendritic structure, and the fluidized air distributor of the annular or dendritic structure can improve the fluidization efficiency.
As a preferable technical scheme of the utility model, the fluidized air branch pipeline can be communicated with other air sources, and the fluidized air distributor can be connected with other regenerated main air through the fluidized air branch pipeline, so that the operation cost is saved, and the energy consumption of the device is reduced.
The utility model has the beneficial effects that: the utility model is through the tube bank jacket, fluidized air distributor, fluidized air branch pipeline, catalyst outlet, cold catalyst entry to cooperate setting, L-shaped catalyst outlet can make catalyst pile up and form "dead bed" in the tube bank jacket when not ventilating fluidized air, the heat in the regenerator is only heat-conducted to get the heat pipe bunch through the catalyst layer, get the heat very little at this moment, after opening fluidized air, make the catalyst in the tube bank jacket present the fluidization state, the regenerator hot catalyst enters from the cold catalyst entry of the upper portion of the tube bank jacket, contact with getting the heat pipe bunch and discharge from the catalyst outlet after heat exchange, fluidized air distributor and fluidized air branch pipeline can utilize fluidized air to accelerate the circulation of the catalyst, can use regenerated main wind at the same time, save the operating cost, reduce the energy consumption of the apparatus, meet the requirement for regulating and getting the heat load completely.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic top view of a single internal heat extraction bundle arrangement of the present invention;
fig. 3 is a schematic top view of the arrangement of the multiple groups of internal heat extraction tube bundles according to the present invention.
In the figure: 1. an internal heat extraction tube bundle; 2. a tube bundle jacket; 3. a fluidized wind distributor; 4. a fluidized air branch pipeline; 5. the bottom of the tube bundle jacket; 6. a catalyst outlet; 7. a cold catalyst inlet; 8. a water inlet pipe; 9. A water vapor outlet pipeline; 10. a regenerator.
Detailed Description
Example 1
As shown in fig. 1 to 3, the utility model discloses a pneumatic control type internal heat extraction device, which adopts the technical scheme that the pneumatic control type internal heat extraction device comprises an internal heat extraction tube bundle 1, a tube bundle jacket 2, a fluidized air distributor 3, a fluidized air branch pipeline 4, a tube bundle jacket bottom 5, a catalyst outlet 6, a cold catalyst inlet 7, a water inlet pipeline 8, a water vapor outlet pipeline 9 and a regenerator 10, wherein the regenerator 10 is internally provided with the tube bundle jacket 2, the inner wall of the tube bundle jacket 2 is fixedly connected with the internal heat extraction tube bundle 1, the internal heat extraction tube bundle 1 is arranged in the tube bundle jacket 2, the upper part of the tube bundle jacket 2 is slightly higher than the internal heat extraction tube bundle 1, the internal heat extraction tube bundle 1 is completely buried in the tube bundle jacket 2, one end of the internal heat extraction tube bundle 1 is arranged outside the regenerator 10 and is provided with the water inlet pipeline 8, the top of the internal heat extraction tube bundle 1 is provided with the water vapor outlet pipeline 9, when heat extraction is carried out, the water in the water inlet pipeline 8 and the internal heat taking pipe bundle 1 is heated, the water vapor is discharged from the water vapor outlet pipeline 9, the top of the pipe bundle jacket 2 is provided with a cold catalyst inlet 7, one side of the bottom 5 of the pipe bundle jacket is provided with a catalyst outlet 6, when fluidized air is not introduced, catalyst enters from the cold catalyst inlet 7 to be fully stacked in the pipe bundle jacket 2 to form a 'dead bed', the heat in the regenerator 10 is only conducted to the internal heat taking pipe bundle 1 through a catalyst layer, the heat taking amount is very small, after the fluidized air is started, the catalyst in the pipe bundle jacket 2 is in a fluidized state, the hot catalyst in the regenerator 10 enters from the cold catalyst inlet 7 at the upper part of the pipe bundle jacket 2, is contacted with the internal heat taking pipe bundle 1 for heat exchange and then is discharged from the L-shaped catalyst outlet 6, the bottom 5 of the pipe bundle jacket is positioned below the internal heat taking pipe bundle 1 and is provided with a fluidized air distributor 3, one end of the fluidized air distributor 3, which is positioned at the outer side of the regenerator 10, is connected with a fluidized air distribution pipeline 4, the fluidized air branch pipeline 4 can be connected with other main regenerative air sources, so that the operation cost is saved, and the energy consumption of the device is reduced.
As a preferred technical scheme of the utility model, the internal heat extraction pipe bundle 1 is a sleeve type heat extraction pipe, the internal heat extraction pipe bundle 1 is of an L-shaped structure, and the sleeve type internal heat extraction pipe bundle 1 can conduct heat efficiently.
In a preferred embodiment of the present invention, the tube bundle jacket 2 is a round jacket, or a square jacket or other jacket, and the tube bundle jacket 2 may have various shapes to accommodate different regenerators 10.
In a preferred embodiment of the present invention, the tube bundle jacket 2 may be connected to the inner wall of the regenerator 10 to form a separate space structure.
As a preferable technical scheme of the utility model, the catalyst outlet 6 protrudes out of one side of the bottom 5 of the tube bundle jacket, the catalyst outlet 6 is L-shaped, and the L-shaped catalyst outlet 6 is convenient for the accumulation and the circulation of the catalyst.
As a preferred technical solution of the present invention, the internal heat extraction tube bundle 1 is individually arranged, or is arranged in parallel in multiple groups, and the internal heat extraction tube bundle 1 individually arranged and arranged in parallel in multiple groups can be applied to different regenerators 10.
As a preferred technical solution of the present invention, the fluidized air distributor 3 is of an annular or dendritic structure, and the fluidized air distributor 3 of the annular or dendritic structure increases the fluidization efficiency.
As a preferred technical scheme of the utility model, the fluidized air branch pipeline 4 can be communicated with other air sources, and the fluidized air distributor 3 can be connected with other regeneration main air through the fluidized air branch pipeline 4, so that the operation cost is saved, and the energy consumption of the device is reduced.
The working principle of the utility model is as follows: the internal heat taking pipe bundle 1 is arranged in the pipe bundle jacket 2, the upper part of the pipe bundle jacket 2 is slightly higher than the internal heat taking pipe bundle 1, the internal heat taking pipe bundle 1 is completely buried in the pipe bundle jacket 2, the whole heat taking unit is immersed in a dense bed layer of a catalyst of the regenerator 10, when fluidized air is not introduced, the catalyst enters from a cold catalyst inlet 7, so that the catalyst is fully piled in the pipe bundle jacket 2 to form a 'dead bed', the heat in the regenerator 10 is only conducted to the internal heat taking pipe bundle 1 through the catalyst layer, the heat taking quantity is very small, after the fluidized air is started, the catalyst in the pipe bundle jacket 2 is in a fluidized state, the hot catalyst in the regenerator 10 enters from the cold catalyst inlet 7 at the upper part of the pipe bundle jacket 2 and is contacted with the internal heat taking pipe bundle 1, further, water in a water inlet pipeline 8 and the internal heat taking pipe bundle 1 is heated, water vapor is discharged from a water vapor outlet pipeline 9, and is discharged from an L-shaped catalyst outlet 6 after heat exchange, fluidized air is blown out through the fluidized air branch pipeline 4 and the fluidized air distributor 3, under the action of the fluidized air, a small part of the catalyst after heat exchange returns to the regenerator 10 from the cold catalyst inlet 7 in a back mixing mode, most of the catalyst returns to the regenerator 10 from the catalyst outlet 6, the higher the fluidization linear velocity is, the larger the heat exchange quantity is, but the fluidization linear velocity and the heat transfer quantity are not linearly increased, and the fluidized linear velocity and the heat transfer quantity have flexible adjustability in a certain operation range, further, the fluidized air can use other main regeneration air, the requirement for adjusting the heat taking load can be completely met, the operation cost of the inner heat collector is greatly reduced, and the energy consumption of the device is reduced.
The mechanical connection according to the utility model is a conventional means used by the skilled person and can be suggested by limited trials and is common general knowledge.
Components not described in detail herein are prior art.
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides a heat equipment of getting in gas accuse formula, includes interior heat pipe bundle (1), tube bank cover (2), fluidization wind distributor (3), fluidization wind branch pipe way (4), tube bank cover bottom (5), catalyst export (6) and cold catalyst entry (7), inlet channel (8), steam outlet pipeline (9) and regenerator (10), its characterized in that: the fluidized air distributor is characterized in that a tube bundle jacket (2) is arranged inside the regenerator (10), an internal heat taking tube bundle (1) is fixedly connected to the inner wall of the tube bundle jacket (2), a water inlet pipeline (8) is arranged at one end of the internal heat taking tube bundle (1) and located on the outer side of the regenerator (10), a water vapor outlet pipeline (9) is arranged at the top of the internal heat taking tube bundle (1), a cold catalyst inlet (7) is arranged at the top of the tube bundle jacket (2), a catalyst outlet (6) is arranged at one side of the bottom (5) of the tube bundle jacket, a fluidized air distributor (3) is arranged below the internal heat taking tube bundle (1) and located on the bottom (5) of the tube bundle jacket, and a fluidized air distributing pipeline (4) is connected to one end of the fluidized air distributor (3) and located on the outer side of the regenerator (10).
2. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the internal heat extraction pipe bundle (1) is a sleeve type heat extraction pipe, and the internal heat extraction pipe bundle (1) is of an L-shaped structure.
3. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the tube bundle jacket (2) is any one of a circular jacket and a square jacket.
4. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the tube bundle jacket (2) can be connected with the inner wall of the regenerator (10) to form an independent space structure.
5. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the catalyst outlet (6) protrudes out of one side of the bottom (5) of the tube bundle jacket, and the catalyst outlet (6) is L-shaped.
6. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the internal heat taking pipe bundle (1) is arranged independently or in parallel.
7. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the fluidized wind distributor (3) is of an annular or dendritic structure.
8. The pneumatic internal heat extraction equipment according to claim 1, characterized in that: the fluidized air branch pipeline (4) is communicated with an air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122556160.2U CN216573131U (en) | 2021-10-26 | 2021-10-26 | Pneumatic control type internal heat-taking equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122556160.2U CN216573131U (en) | 2021-10-26 | 2021-10-26 | Pneumatic control type internal heat-taking equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216573131U true CN216573131U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122556160.2U Active CN216573131U (en) | 2021-10-26 | 2021-10-26 | Pneumatic control type internal heat-taking equipment |
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| Country | Link |
|---|---|
| CN (1) | CN216573131U (en) |
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2021
- 2021-10-26 CN CN202122556160.2U patent/CN216573131U/en active Active
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