CN206739936U - A kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer - Google Patents
A kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer Download PDFInfo
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- CN206739936U CN206739936U CN201720586658.4U CN201720586658U CN206739936U CN 206739936 U CN206739936 U CN 206739936U CN 201720586658 U CN201720586658 U CN 201720586658U CN 206739936 U CN206739936 U CN 206739936U
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Abstract
A kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer, the evaporation tube of external warmer case inside are arranged to take hot arc, and the taking of evaporation tube is uniformly arranged needle-like on the outside of hot arc and takes plume, and evaporation tube takes hot arc end set guide duct；Taking for evaporation tube sets at least four circle needle-likes to take plume on the outside of hot arc, each circle needle-like takes the needle-like of plume at least five to take plume, and needle-like takes welding between plume and evaporation tube to set weld seam；Needle-like takes plume to be respectively set to even number circle, remarkable book circle, and needle-like takes the even number circle of plume to be disposed adjacent with remarkable book circle；The uniform needle-like in the utility model heat removing tube road takes plume, the contact area of heat can be increased, accelerate the exchange to heat energy in gas, spicule and heat removing tube road point-like join domain are small, reduce thermal expansion rate, non-deformability is strong, and steam/water circulating is stable, and security performance is more reliable, device fabrication is easier, crudy can be improved, realizes long-term operation, extends service life.
Description
Technical field
The heat removing tube of the external warmer of oil plant heavy oil catalytically cracking equipment is the utility model is related to, especially a kind of oil refining
The needle-like rib heat removing tube device of catalytic cracking external warmer.
Background technology
At present, the direction that catalyst flows in the external warmer of oil plant RFCC can be divided into two kinds of forms：I.e.
The close phase heat transfer external warmer of downflow system and up flow type dilute phase heat transfer external warmer.Because it is under fluidized state, high temperature catalyst
Grain heat transfer coefficient is high, takes thermic load and operating flexibility scope big and the features such as energy consumption is low, is obtained in heavy oil catalytically cracking equipment
Widely use, turn into indispensable key equipment.A number of heat removing tube, thermocatalyst are set inside external warmer
Flowed outside pipe, owe enthalpy water and heat removing tube inner bottom part is introduced by the down-comer set in heat removing tube from top to bottom, then by taking heat
The annular gap between down-comer in Guan Yuguan is flowed from bottom to top, and saturation water is produced after heat exchange and takes heat with saturated vapor outflow
Pipe；
For augmentation of heat transfer, on all heat removing tubes, a considerable amount of longitudinal fins along its circumferential directions, fin length
From 5 meters to 8 meters.It is close because of its fin arrangement, it is difficult to impose automatic welding, and the length of weld seam, weld seam it is close, welded
Pipe causes to produce substantial amounts of welding on heat removing tube because of, the difficulty of carrying out flaw detection big along heat removing tube axial deformation of being heated in journey
Stress and defect, the workmanship of heat removing tube is greatly affected, hidden danger has been buried in the safe operation to external warmer；
In a device, the vertical installation of external warmer, high temperature catalyst are typically flowed into by external warmer top, flow through heat removing tube
After heat exchange, flowed out by bottom, the fluidized wind circulation that fluidized wind is set via external warmer inner bottom part enters, and carries out fluidisation and forms bubbling
Bed, bed up and down temperature typically differ 100-150 DEG C, at various height, bed vertically or radial direction all there is
The considerably temperature difference.Fin is that wire is connected with heat removing tube, same longitudinal fin, two caused by vertical temperature difference and radial temperature difference
The thermal expansion in direction, its deformation can not be coordinated, and thus produce at a relatively high local stress in fin and heat removing tube junction, finally
Cause a great deal of heat removing tube torsional deformation, be greatly degrading the normal water circulation for taking hot systems so that heat removing tube partial wall
Temperature is too high, manages interior formation separation of two, finally the heat removing tube booster caused by temperature fatigue.Projected life is caused to be set in 15 years
It is standby, run and be not able to and scrap less than four, five years, its result greatly reduces the service life of the equipment；
Upon examination it is found that, there is substantial amounts of bending and become in external warmer tube bank after most refinery catalytic cracking units stop work
Shape, the interior guiding trestle set of equipment are damaged because of the torsional deformation of heat removing tube, and a large amount of crackles are presented in fin roots, and heat removing tube is quick-fried
Pipe turns into the main failure mode of external warmer, jeopardizes the safe operation of whole device, and it, which loses, big is difficult to estimate；In view of
A kind of above-mentioned reason, it is proposed that the needle-like rib heat removing tube device of refining catalytic cracking external warmer.
Utility model content
The purpose of this utility model is to overcome the outside heat removing of current refinery catalytic cracking unit in the process of running
There is substantial amounts of flexural deformation in device tube bank, and the guiding trestle set in equipment is damaged because of the torsional deformation of heat removing tube, fin root
A large amount of crackles are presented in portion, and heat removing tube booster has turned into the main failure mode of external warmer, jeopardizes the safe operation of whole device,
It, which loses, big is difficult to estimate；By reasonably designing, there is provided a kind of needle-like rib heat removing tube of refining catalytic cracking external warmer
Device, the uniform needle-like in the utility model heat removing tube road take plume, can increase the contact area of heat, accelerates to heat energy in gas
Exchange, spicule and heat removing tube road point-like join domain are small, reduce thermal expansion rate, and non-deformability is strong, and steam/water circulating is stable, peace
Full more reliable performance, device fabrication is easier, can improve crudy, realize long-term operation, extend service life.
The utility model to achieve these goals, adopts the following technical scheme that：A kind of refining catalytic cracking external warmer
Needle-like rib heat removing tube device, be by external warmer housing, evaporation tube, inlet channel, guide duct, needle-like take plume, be oriented to
Plate, owe Nem water inlets, saturated vapor outlet, weld seam composition；Evaporation tube is set in preformed hole, hole on external warmer housing, evaporated
Inlet channel is set in pipe, the guide plate of support inlet channel is set between evaporation tube and inlet channel；Outside external warmer housing
The evaporation tube of side is arranged to outer segment, the deficient Nem water inlets of the outer segment end set inlet channel of evaporation tube, evaporation tube side
Saturated vapor is set to export；The evaporation tube of external warmer case inside is arranged to take hot arc, and evaporation tube is taken on the outside of hot arc uniformly
Needle-like is set to take plume, evaporation tube takes hot arc end set guide duct；
Taking for evaporation tube sets at least four circle needle-likes to take plume on the outside of hot arc, each circle needle-like takes the needle-like of plume at least five
Plume is taken, needle-like takes welding between plume and evaporation tube to set weld seam；
Needle-like takes plume to be respectively set to even number circle, remarkable book circle, and needle-like takes the even number circle of plume to be disposed adjacent with remarkable book circle.
Beneficial effect is：The uniform needle-like in the utility model heat removing tube road takes plume, can increase the contact area of heat, add
Exchange of the speed to heat energy in gas, spicule and heat removing tube road point-like join domain are small, reduce thermal expansion rate, and non-deformability is strong,
Steam/water circulating is stable, and security performance is more reliable, and device fabrication is easier, can improve crudy, realize long-term operation,
Extend service life.
From the point of view of the catalyst flowing of catalyst cooler system and air flow form：
Catalyst passes through the dense-phase bed of external warmer, moving air with 0.3-0.5m/s apparent air speed from
Through the emulsion zone and dilute-phase zone of bubbling bed on down, the gas of a small amount of catalyst has been carried secretly from the balance on external warmer top
Pipe returns to the dilute-phase zone of regenerator, and the internal circulating load of catalyst is controlled by the guiding valve on outlet line, to realize outside heat removing
Device takes the change of thermic load.
From vapour, in the structure type of water-flow circuit and heat removing tube from the point of view of：
Enter from top to bottom with needle-like rib unit bushing type heat removing tube, the every sleeve pipe unit independent as one, water
Inner sleeve, then rise from bottom to top from the annular space of outer tube, instead of the heat removing tube of longitudinal fin, and vapour, and water circulation can be with
Reform of nature circulates or forced circulation.
The utility model is described in further detail below in conjunction with the accompanying drawings：
Fig. 1 is general assembly structural representation；
Fig. 2 is Fig. 1 B to structural representation；
Fig. 3 is Fig. 1 C to structural representation；
Fig. 4 is Fig. 1 partial structural diagram；
In Fig. 1,2,3,4：External warmer housing 1, evaporation tube 2, inlet channel 3, guide duct 4, needle-like take plume 5, led
To plate 6, owe Nem water inlets 7, saturated vapor outlet 8, weld seam 9.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings：
Evaporation tube 2 is set on external warmer housing 1 in preformed hole, hole, inlet channel 3, evaporation tube 2 are set in evaporation tube 2
The guide plate 6 of support inlet channel 3 is set between inlet channel 3；The evaporation tube 2 in the outside of external warmer housing 1 is arranged to outer
Pipeline section, the deficient Nem water inlets 7 of the outer segment end set inlet channel 3 of evaporation tube 2, the side of evaporation tube 2 set saturated vapor to go out
Mouth 8；The evaporation tube 2 of the inner side of external warmer housing 1 is arranged to take hot arc, and the taking of evaporation tube 2 is uniformly arranged needle-like on the outside of hot arc and taken
Plume 5, evaporation tube 2 take hot arc end set guide duct 4；
Taking for evaporation tube 2 sets at least four circle needle-likes to take plume 5 on the outside of hot arc, each circle needle-like takes the pin of plume at least five
Shape takes plume 5, and needle-like takes welding between plume 5 and evaporation tube 2 to set weld seam 9；
Needle-like takes plume 5 to be respectively set to even number circle, remarkable book circle, and needle-like takes the even number circle of plume 5 is adjacent with remarkable book circle to set
Put.
Claims (3)
1. a kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer, is by external warmer housing (1), evaporation tube
(2), inlet channel (3), guide duct (4), needle-like take plume (5), guide plate (6), deficient Nem water inlets (7), saturated vapor to go out
Mouth (8), weld seam (9) are formed；It is characterized in that：Evaporation tube (2), evaporation tube are set on external warmer housing (1) in preformed hole, hole
(2) inlet channel (3) is set in, the guide plate of support inlet channel (3) is set between evaporation tube (2) and inlet channel (3)
(6)；Evaporation tube (2) on the outside of external warmer housing (1) is arranged to outer segment, the outer segment end set water inlet of evaporation tube (2)
The deficient Nem water inlets (7) of pipeline (3), evaporation tube (2) side set saturated vapor to export (8)；On the inside of external warmer housing (1)
Evaporation tube (2) is arranged to take hot arc, and the taking of evaporation tube (2) is uniformly arranged needle-like on the outside of hot arc and takes plume (5), evaporation tube (2)
Take hot arc end set guide duct (4).
2. according to a kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer described in claim 1, its feature
It is：Taking for evaporation tube (2) sets at least four circle needle-likes to take plume (5) on the outside of hot arc, each circle needle-like takes plume at least five
Needle-like takes plume (5), and needle-like takes welding between plume (5) and evaporation tube (2) to set weld seam (9).
3. according to a kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer described in claim 1, its feature
It is：Needle-like takes plume (5) to be respectively set to even number circle, remarkable book circle, and needle-like takes the even number circle of plume (5) is adjacent with remarkable book circle to set
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720586658.4U CN206739936U (en) | 2017-05-24 | 2017-05-24 | A kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720586658.4U CN206739936U (en) | 2017-05-24 | 2017-05-24 | A kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206739936U true CN206739936U (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720586658.4U Active CN206739936U (en) | 2017-05-24 | 2017-05-24 | A kind of needle-like rib heat removing tube device of refining catalytic cracking external warmer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331748A (en) * | 2018-11-13 | 2019-02-15 | 洛阳泰美石化设备研究院 | A kind of manufacturing method of bundled tube external warmer device |
-
2017
- 2017-05-24 CN CN201720586658.4U patent/CN206739936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109331748A (en) * | 2018-11-13 | 2019-02-15 | 洛阳泰美石化设备研究院 | A kind of manufacturing method of bundled tube external warmer device |
| CN109331748B (en) * | 2018-11-13 | 2023-12-08 | 洛阳泰美石化设备研究所 | Manufacturing method of tube bundle type external heat collector device |
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