CN207153663U - Improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band - Google Patents
Improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band Download PDFInfo
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- CN207153663U CN207153663U CN201721067290.7U CN201721067290U CN207153663U CN 207153663 U CN207153663 U CN 207153663U CN 201721067290 U CN201721067290 U CN 201721067290U CN 207153663 U CN207153663 U CN 207153663U
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- Prior art keywords
- bed reactor
- equipment center
- fixed bed
- ultra
- perforated plate
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- 238000003466 welding Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003054 catalyst Substances 0.000 abstract description 3
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a kind of structure for improving ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band, enter medium tube from the individual radial direction perpendicular to equipment center line is increased on the bobbin carriage cylinder below lower perforated plate, horizontally extend at equipment center, connected after turning to 90 degree by 90 degree of elbows with equipment center pipe lower end；Equipment center pipe upper end is fixed by welding in below upper perforated plate, deflection plate and lower perforated plate are down sequentially passed through until being welded with the horizontal anchor ring of 90 degree of elbows, equipment center pipe is provided with several medium outlet holes in the range of certain length below upper perforated plate, so as to form a kind of structure for improving ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band.It is uneven that the utility model improvement solves the portion's heat exchange on the upper side of former ultra-large type calandria type fixed bed reactor shell side center, reaction tube, catalyst easy burn-out, later maintenance cost of upkeep is big, and security reliability does not ensure, the problems such as heat exchange inequality causes reaction efficiency low, and equipment does not reach design production capacity.
Description
Technical field
An important internal structure of calandria type fixed bed reactor in petrochemical industry is the utility model is related to, is specifically related to
A kind of and structure for improving ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band.
Background technology
Traditional calandria type fixed bed reactor, medium are to enter shell side by shell side bottom, are flowed out from shell side top
Caused heat in reaction tube is led out, the reactor of ultra-large type has also carried out some improvement in structure, under shell side
The medium inlet in portion and the media outlet pipe on shell side top all make endless tube into by original single pipe, but due to device diameters too
Greatly, shell side medium still forms heat exchange dead band in shell side center portion on the upper side.This structure types of Fig. 1 are exactly to make the shell after endless tube into
Cheng Jiezhi passes in and out structure, and medium is entered being connected with the bottom of shell side housing 11 and circumferential uniformly along shell side housing 11 by endless tube 10
Distribution several adapters 9 after enter back into shell side, by after several deflection plates 6 from the top of shell side housing 11 by with shell side housing
11 connections and along the circumferential equally distributed several adapters 12 of shell side housing 11 and the outflow shell side of endless tube 13.This creates the terminal permitted
More shortcomings：1st, ultra-large type calandria type fixed bed reactor shell side medium is uneven in the portion's heat exchange on the upper side of shell side center, forms heat exchange
Dead band；2nd, close to reaction tube, the catalyst easy burn-out in shell side center portion on the upper side；3rd, later maintenance, cost of upkeep are added, 4, set
Standby security reliability do not ensure, 5, heat exchange it is uneven, cause reaction efficiency low；6th, equipment does not reach design production capacity etc..
The content of the invention
The purpose of this utility model is to provide a kind of improvement ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band
Structure, efficiently solve the portion's heat exchange on the upper side of former ultra-large type calandria type fixed bed reactor shell side center uneven, reaction tube, catalysis
Agent easy burn-out, later maintenance cost of upkeep is big, and security reliability does not ensure, heat exchange inequality causes reaction efficiency low, and equipment reaches
The problems such as less than design production capacity, especially suitable for ultra-large type calandria type fixed bed reactor.
The technical solution of the utility model is：A kind of improvement ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band
Structure, it is characterized in that entering medium from the individual radial direction perpendicular to equipment center line is increased on the bobbin carriage cylinder below lower perforated plate
Pipe, is horizontally extended at equipment center, is connected after then turning to 90 degree by 90 degree of elbows with equipment center pipe lower end, equipment center
Pipe upper end is fixed by welding in below upper perforated plate, down sequentially passes through deflection plate and lower perforated plate up to the level with 90 degree of elbows
Anchor ring welds, and equipment center pipe is provided with several medium outlet holes in the range of certain length below upper perforated plate, so as to form
A kind of structure for improving ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band.
Wherein elbow enters medium tube material, wall thickness and size and matched with equipment center pipe and radial direction.
Wherein the center line of equipment center pipe and equipment center line overlap, and equipment center pipe diameter size, material and wall
It is thick identical with radially medium tube is entered.
The utility model has the advantages that：
1st, make equipment overall heat exchange uniform, protect reaction tube and catalyst not to be burned；2nd, later maintenance maintenance is reduced
Cost；3rd, production efficiency is improved；4th, equipment operation is more safe and reliable；5th, equipment is made to reach design production capacity.
Brief description of the drawings
Fig. 1 is prior art structural front view.
Fig. 2 is the utility model structural front view.
Fig. 3 is that the utility model enters medium tube and the relative position of 90 degree of elbows, lower perforated plate, deflection plate, central tube is illustrated
Figure.
Fig. 4 is the relative position schematic diagram of the utility model central tube, medium outlet hole and upper perforated plate.
Fig. 5 is Fig. 4 A-A views.
Embodiment
As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, the utility model improves ultra-large type calandria type fixed bed reactor Local Heat Transfer
The structure in dead band：Enter medium from several radial directions perpendicular to equipment center line are increased on the bobbin carriage cylinder 2 below lower perforated plate 4
Pipe 3, is horizontally extended at equipment center, is connected after then turning to 90 degree by 90 degree of elbows 1 with the lower end of equipment center pipe 5, equipment
The upper end of central tube 5 is fixed by welding in upper perforated plate 8 (not having perforate on tube sheet herein) below, down sequentially passes through deflection plate 6
With lower perforated plate 4 until being welded with the horizontal anchor ring of 90 degree of elbows 1, the certain length model below upper perforated plate 8 of equipment center pipe 5
Several medium outlet holes 7 are provided with enclosing, make the medium circulation in shell side center portion on the upper side, so that whole equipment operation is good
It is good.
Wherein elbow 1 enters the material of medium tube 3, wall thickness and size and matched with equipment center pipe 5 and radial direction；Equipment center pipe 5
Center line and equipment center line overlap, and the diameter of equipment center pipe 5, material and wall thickness and radially to enter medium tube 3 identical.
Claims (3)
- A kind of 1. structure for improving ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band, it is characterized in that from close to lower perforated plate (4) several radial directions perpendicular to equipment center line are increased on lower tube box cylinder (2) below and enters medium tube (3), horizontally extended into and set At standby center, connected after then turning to 90 degree by 90 degree of elbows (1) with equipment center pipe (5) lower end, on equipment center pipe (5) End is fixed by welding in upper perforated plate (8) below, down sequentially passes through deflection plate (6) and lower perforated plate (4) until and 90 degree of elbows (1) horizontal anchor ring welding, equipment center pipe (5) are provided with several medium flow fields below close to upper perforated plate (8) in the range of certain length Portal (7), so as to form a kind of structure for improving ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band.
- 2. improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band, its feature as claimed in claim 1 It is that elbow (1) enters medium tube (3) material, wall thickness and size and matched with equipment center pipe (5) and radial direction.
- 3. improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band, its feature as claimed in claim 1 That the center line and equipment center line of equipment center pipe (5) overlap, and equipment center pipe (5) diameter, material and wall thickness and It is identical radially to enter medium tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721067290.7U CN207153663U (en) | 2017-08-24 | 2017-08-24 | Improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721067290.7U CN207153663U (en) | 2017-08-24 | 2017-08-24 | Improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207153663U true CN207153663U (en) | 2018-03-30 |
Family
ID=61717806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721067290.7U Expired - Fee Related CN207153663U (en) | 2017-08-24 | 2017-08-24 | Improve the structure in ultra-large type calandria type fixed bed reactor Local Heat Transfer dead band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207153663U (en) |
-
2017
- 2017-08-24 CN CN201721067290.7U patent/CN207153663U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180330 |