CN202954000U - External heat collector with built-in enhanced heat transfer fin for regenerator in catalytic cracking unit - Google Patents
External heat collector with built-in enhanced heat transfer fin for regenerator in catalytic cracking unit Download PDFInfo
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- CN202954000U CN202954000U CN2012206847770U CN201220684777U CN202954000U CN 202954000 U CN202954000 U CN 202954000U CN 2012206847770 U CN2012206847770 U CN 2012206847770U CN 201220684777 U CN201220684777 U CN 201220684777U CN 202954000 U CN202954000 U CN 202954000U
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- heat transfer
- water inlet
- inlet pipe
- transfer fin
- removing tube
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Abstract
The utility model relates to an external heat collector with a built-in enhanced heat transfer fin for a regenerator in a catalytic cracking unit. The external heat collector comprises a high-temperature catalyst inlet, a heat collecting pipe, an external heat collector shell, a fluidization air ring and a low-temperature catalyst return port, wherein the heat collecting pipe comprises a water inlet pipe, a heat collecting pipe shell, and a water and steam outlet, the water inlet pipe is placed in the heat collecting pipe shell and is located below the water and steam outlet, the heat collecting pipe further comprises an enhanced heat transfer fin which is arranged between the outer wall of the water inlet pipe and the heat collecting pipe shell and is connected with the outer wall of the water inlet pipe in a spiral manner, and a clearance is reserved between the tail end of the enhanced heat transfer fin and tail end of the heat collecting pipe shell. By virtue of the built-in enhanced heat transfer fin, the flow state of a heat collecting medium inside the heat collecting pipe is changed, flow speed of the heat collecting medium is increased, and the purpose of enhanced heat transfer is reached, so that heat collecting amount in a unit area is improved.
Description
Technical field
The utility model relates to the external warmer of the For Fcc Regenerator in a kind of refining of petroleum field, particularly relates to a kind of For Fcc Regenerator external warmer of built-in enhanced heat transfer fin.
Background technology
Catalytic cracking unit in refining of petroleum, be the wax oil realizing producing after the oil time processing, heavy oil (long residuum or vacuum residuum) by the catalytic cracking process process, change into a whole set of processing unit of the products such as gasoline, diesel oil of lightweight.Along with index energy-conservation, consumption reduction improves constantly, improve the main direction that the working ability of monomer device, the refining losses that reduces the unit raw material and consumption indicators become technical development.The promotion and application of the outside heat removing technology of For Fcc Regenerator, to be exactly that catalytic cracking unit realizes energy-conservation, one of the effective way of consumption reduction, volume increase, synergy.
Summary of the invention
The utility model purpose is, for For Fcc Regenerator external warmer heat removing tube increases built-in enhanced heat transfer fin, thereby change heat removing tube inside heat removing medium flowing state, improve the velocity of flow of heat-obtaining medium, reach the purpose of enhancement of heat transfer, thereby improve the heat-obtaining amount of unit surface.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.For Fcc Regenerator external warmer according to the built-in enhanced heat transfer fin the utility model proposes, comprise high temperature catalyst entrance, heat removing tube, external warmer housing, fluidisation vane and low temperature catalyst return port; This heat removing tube comprises water inlet pipe, heat removing tube shell, water and steam outlet, and water inlet pipe is placed in the heat removing tube shell, and leaves gap between the end of the end of this water inlet pipe and this heat removing tube; Wherein this heat removing tube also comprises enhanced heat transfer fin, it is arranged between this water inlet pipe outer wall and this heat removing tube shell, this enhanced heat transfer fin is spiral and links together with this water inlet pipe outer wall, and has gap between the inwall of this enhanced heat transfer fin and this heat removing tube shell.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Aforesaid external warmer, wherein this enhanced heat transfer fin is single spiral continuous winding between this water inlet pipe outer wall and this heat removing tube shell.
Aforesaid external warmer, wherein this enhanced heat transfer fin is that single spiral interruption is wound around between this water inlet pipe outer wall and this heat removing tube shell.
Aforesaid external warmer, wherein this enhanced heat transfer fin is spiral continuous or interruption winding more than two between this water inlet pipe outer wall and this heat removing tube shell.
Aforesaid external warmer, wherein the mode of connection of this enhanced heat transfer fin and this water inlet pipe outer wall is welding.
Aforesaid external warmer, wherein this enhanced heat transfer fin and this water inlet pipe are one-body molded.
The heat transfer formula: Q=KA △ T, in formula: Q-heat transfer capacity; K-overall heat transfer coefficient; A-heat transfer area; Δ T-temperature head.
By this heat transfer formula, can be found out, heat transfer capacity Q is directly proportional to overall heat transfer coefficient K, in the situation that heat interchanging area A and temperature head Δ T are constant, more heat transfer capacity Q is larger for overall heat transfer coefficient K, and the flow velocity of K and heat-transfer medium is proportional, therefore: under the condition allowed in pressure drop, the flow velocity of heat-transfer medium is larger, and heat-transfer effect is better.
The utility model is by increasing the helical fin of water inlet pipe outer wall in the external warmer heat removing tube, the movement locus that makes circular cylindrical space between outside heat removing tube shell and water inlet pipe become water in ，Shi Gai space, screw cylindrical space becomes spiral by motion vertically upward and moves upward.Point-to-point transmission slant range is the shortest, and curve distance is greater than slant range forever.In unit time, the flow of water is constant, and the cross section of current is constant, increases the working line of water, just must increase the velocity of flow of water.
On the other hand, between the interior water inlet pipe of external warmer heat removing tube and heat removing tube shell, the high speed rotating of water flows, can effectively destroy the air film that the heat removing tube inner surface of outer cover forms, under the effect of rotary centrifugal force, can make the inwall of low density bubble away from the heat removing tube shell, make the water energy fast approaching heat removing tube inner surface of outer cover that density is higher.Due to the thermal resistance of air film much larger than water, thereby effectively reduce thermal resistance, improve the unit heat-transfer effect
The enhanced heat transfer fin arranged in heat removing tube in this external warmer of the present utility model is connected with the water inlet pipe outer wall, and leave gap between this enhanced heat transfer fin and heat removing tube outer casing inner wall, this set-up mode is to have considered heat transfer efficiency, resistance drop and cost of manufacture, to guarantee obtaining higher heat transfer efficiency on the basis of low resistance, low cost of manufacture simultaneously.And can be optionally and concrete the setting for the setting of the height of this enhanced heat transfer fin, to realize above-mentioned effect.
Therefore, by technique scheme, the For Fcc Regenerator external warmer of a kind of built-in enhanced heat transfer fin of the utility model, it at least has following advantages:
1. by improving the flow velocity of the interior water of heat removing tube in external warmer, improve heat transfer coefficient, improve heat transfer efficiency.
2. by making in the external warmer heat removing tube high speed rotating of water between water inlet pipe and heat removing tube shell flow, under the effect of rotary centrifugal force, can effectively destroy the air film that the heat removing tube inner surface of outer cover forms, make bubble away from the heat removing tube internal surface, the relatively large water of density flows at the heat removing tube inner surface of outer cover, thereby effectively reduce thermal resistance, improve the unit heat-transfer effect.
3. can by improving heat transfer coefficient, reduce thermal resistance in the situation that the heat-obtaining amount is constant, improve the heat transfer capacity of unit surface, the Whole Equipment size is dwindled.
4. manufacture simply, save cost.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technique means of the present utility model, and can be implemented according to the content of specification sheets, and for above and other purpose of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and the cooperation accompanying drawing, be described in detail as follows.
The accompanying drawing explanation
Fig. 1 is the structural representation of the For Fcc Regenerator external warmer of the built-in enhanced heat transfer fin of the utility model.
Fig. 2 is the structural representation of heat removing tube in external warmer in the utility model one embodiment.
Fig. 3 is the cross-sectional profile structural representation of external warmer of two enhanced heat transfer fins of the utility model one embodiment.
[main element nomenclature]
1: revivifier;
10: external warmer
2: the high temperature catalyst entrance; 3: heat removing tube
4: the external warmer housing; 5: the fluidisation vane
6: the low temperature catalyst return port
3-1: water inlet pipe; 3-2: heat removing tube shell
3-3: water and steam outlet; 3-4: enhanced heat transfer fin
3-5: the end of water inlet pipe;
3-6: the end of heat removing tube
Embodiment
For further setting forth the utility model, be to reach technique means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of For Fcc Regenerator external warmer, structure, feature and effect thereof to a kind of built-in enhanced heat transfer fin according to the utility model proposes, be described in detail as follows.
In order to reach the purpose of this utility model, the technical solution adopted in the utility model following (referring to Fig. 1): the For Fcc Regenerator 1 that a kind of For Fcc Regenerator external warmer of built-in enhanced heat transfer fin relates to, the effect of revivifier 1 is exactly to have made the solid powdery catalyzer recovery reactive behavior that lose reactive behavior of the surface of a reaction process with carbon distribution, under 650 ℃～720 ℃ aerobic environments, burn, remove the carbon distribution of catalyst surface, make catalyzer recover reactive behavior.Catalyst surface area carbon burning process can produce the superfluous heat needed over technological process thermal equilibrium, for making whole technological process thermal equilibrium, is not destroyed, and this part superfluous heat need to be taken away, therefore on regenerator of catalytic unit, adds an external warmer.
In one embodiment, please consult Fig. 1 and Fig. 2, a kind of For Fcc Regenerator external warmer 10 of built-in enhanced heat transfer fin comprises: high temperature catalyst entrance 2 simultaneously; Heat removing tube 3; External warmer housing 4; Fluidisation vane 5; And low temperature catalyst return port 6.
The concrete technology flow process:
A kind of heat-obtaining process of For Fcc Regenerator external warmer 10 of built-in enhanced heat transfer fin, as shown in Figure 1: revivifier 1 bottom is full of the solid powdery high temperature catalyst of high-density fluidised form, temperature is generally 650 ℃～720 ℃, the part of these high temperature catalysts enters in external warmer housing 4 and flows from top to bottom in 2 overflows of high temperature catalyst entrance, heating heat removing tube 3, the water in heat removing tube 3 are heated and become steam heat is taken away.The effect of fluidisation vane (5) is exactly to make the interior catalyzer of external warmer housing 4 in fluidized state, and fluid catalyst, under action of gravity, returns to revivifier 1 by low temperature catalyst return port 6.Whole process is continuously continual.
Please consult Fig. 2, the heat removing tube 3 of this external warmer comprises again: center water inlet pipe 3-1, heat removing tube shell 3-2, water and steam outlet 3-3, and enhanced heat transfer fin 3-4.The water inlet pipe 3-1 of the heat removing tube 3 of external warmer is placed in heat removing tube shell 3-2, and exports following part at water and steam, and leaves gap water supply stream between the end 3-6 of the end 3-5 of this water inlet pipe 3-1 and this heat removing tube and pass through; This enhanced heat transfer fin 3-4 is arranged between this water inlet pipe 3-1 outer wall and this heat removing tube shell 3-2, this enhanced heat transfer fin 3-4 is connected with water inlet pipe 3-1 outer wall, its mode of connection can be welding, also can roll or cast with water inlet pipe integral body, with water inlet pipe, be one-body molded, the size (i.e. the height of this enhanced heat transfer fin 3-4) that enhanced heat transfer fin 3-4 and heat removing tube shell 3-2 inwall leave ，Gai gap, gap depends on the circumstances.
The effect of enhanced heat transfer fin 3-4 is exactly to make the water come via center water inlet pipe 3-1, no longer from its lower end along heat removing tube shell 3-2 and the annular space between water inlet pipe 3-1 directly return to upwards operation, but, under the interference of enhanced heat transfer fin 3-4, the spiral space formed heat removing tube shell 3-2 and water inlet pipe 3-1 and enhanced heat transfer fin 3-4 three spirals up.That is,, by increasing the helical fin of water inlet pipe outer wall in the external warmer heat removing tube, the movement locus that makes circular cylindrical space between outside heat removing tube shell and water inlet pipe become water ，Shi Gai space, screw cylindrical space in becomes spiral by moving vertically upward and moves upward.
In this embodiment, enhanced heat transfer fin is single spiral continuous winding, in other embodiments, can be set to single spiral and be interrupted winding, or many spirals continuously or be interrupted and be wound around, as shown in Figure 3, be the cross-sectional profile structural representation of the external warmer of two enhanced heat transfer fins.But be not limited to this, can be replaced by other equivalent way well-known to those skilled in the art.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. the For Fcc Regenerator external warmer of a built-in enhanced heat transfer fin, comprise high temperature catalyst entrance, heat removing tube, external warmer housing, fluidisation vane and low temperature catalyst return port;
This heat removing tube comprises water inlet pipe, heat removing tube shell, water and steam outlet, and this water inlet pipe is placed in the heat removing tube shell, and below the water and steam outlet, and leave gap between the end of the end of this water inlet pipe and this heat removing tube;
It is characterized in that this heat removing tube also comprises enhanced heat transfer fin, it is arranged between this water inlet pipe outer wall and this heat removing tube shell, this enhanced heat transfer fin is spiral and links together with this water inlet pipe outer wall, and has gap between the inwall of this enhanced heat transfer fin and this heat removing tube shell.
2. external warmer according to claim 1, is characterized in that this enhanced heat transfer fin is single spiral continuous winding between this water inlet pipe outer wall and this heat removing tube shell.
3. external warmer according to claim 1, is characterized in that this enhanced heat transfer fin is wound around for single spiral interruption between this water inlet pipe outer wall and this heat removing tube shell.
4. external warmer according to claim 1, is characterized in that this enhanced heat transfer fin is spiral continuous or interruption winding more than two between this water inlet pipe outer wall and this heat removing tube shell.
5. according to the described external warmer of the arbitrary claim of claim 1-4, the mode of connection that it is characterized in that this enhanced heat transfer fin and this water inlet pipe outer wall is welding.
6. according to the described external warmer of the arbitrary claim of claim 1-4, it is characterized in that this enhanced heat transfer fin and this water inlet pipe are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206847770U CN202954000U (en) | 2012-12-12 | 2012-12-12 | External heat collector with built-in enhanced heat transfer fin for regenerator in catalytic cracking unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206847770U CN202954000U (en) | 2012-12-12 | 2012-12-12 | External heat collector with built-in enhanced heat transfer fin for regenerator in catalytic cracking unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202954000U true CN202954000U (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206847770U Expired - Fee Related CN202954000U (en) | 2012-12-12 | 2012-12-12 | External heat collector with built-in enhanced heat transfer fin for regenerator in catalytic cracking unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202954000U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720236A (en) * | 2019-03-20 | 2020-09-29 | 内蒙古工业大学 | Heater in Stirling engine and Stirling engine |
-
2012
- 2012-12-12 CN CN2012206847770U patent/CN202954000U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720236A (en) * | 2019-03-20 | 2020-09-29 | 内蒙古工业大学 | Heater in Stirling engine and Stirling engine |
| CN111720236B (en) * | 2019-03-20 | 2023-07-28 | 内蒙古工业大学 | Heater in Stirling engine and Stirling engine |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130529 Termination date: 20171212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |