CN206257999U - A kind of linear rapid-cooling heat exchanger - Google Patents
A kind of linear rapid-cooling heat exchanger Download PDFInfo
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- CN206257999U CN206257999U CN201621269141.4U CN201621269141U CN206257999U CN 206257999 U CN206257999 U CN 206257999U CN 201621269141 U CN201621269141 U CN 201621269141U CN 206257999 U CN206257999 U CN 206257999U
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Abstract
The utility model provides a kind of linear rapid-cooling heat exchanger of new structure.It is main to be made up of inlet cone (2), cooling medium connector (3), heat exchange element (4), outlet connector (5), high-temperature medium fairlead (6), high-temperature medium header (7), upper steam adapter (9A), upper steam header (10A), lower steam adapter (9B), lower steam header (10B).It is characterized in that being made up of a cylinder (11) and multiple heat exchanger tubes (12) with the one-to-one every group of heat exchange element (4) of cracking outlet of still boiler tube (1), good effect of heat exchange.The utility model simple structure, the cracking gas residence time is short, and disposal ability is big, and pressure drop is low, save space.The linear rapid-cooling heat exchanger of newly-built ethylene cracker is can be not only used for, the transformation of the in-service rapid-cooling heat exchanger for coming into operation is can be used for again.
Description
Technical field
The utility model is related to the equipment for cracking of ethylene technology, and in particular to a kind of linear chilling of new structure is changed
Hot device.
Background technology
Pyrolysis furnace is the essential elements of ethylene unit.Cracking stock is in cracking furnace tube by after Pintsch process, entering
Rapid-cooling heat exchanger is quickly cooled down, and prevents the generation of secondary response, reduces olefin loss, while energy recovery is produced into steaming
Vapour.With the development of ethane cracking furnace chilling technique, in order to further shorten the rapid-cooling heat exchanger adiabatic section residence time, avoid splitting
Maldistribution of venting one's spleen problem, newly-built at present and transformation pyrolysis furnace rapid-cooling heat exchanger uses linear rapid-cooling heat exchanger mostly.Line
The arrangement of impatient cold heat exchanger heat exchange unit has direct relation with radiating furnace tube configuration, and usual coil outlet enters with rapid-cooling heat exchanger
Mouth connector connects one to one.
It is well known that linear rapid-cooling heat exchanger is by inlet connecting, heat exchange element, cooling medium connector, outlet connection
Part, steam header, high-temperature medium header, hydraulic decoking hole etc. constitute.Based on this, the structure type of conventional linear rapid-cooling heat exchanger
It is as follows：Heat exchange element is double-jacket tube form, is made up of two concentric pipes, and wherein inner tube walks high-temperature medium --- 800 DEG C of left sides
Right cracking gas, the annular space between outer tube and inner tube walks cooling medium --- 350 DEG C or so of gas-vapor mix, each double-jacket tube
Heat exchange element is connected by an inlet connecting with a cracking outlet of still boiler tube, and more than one double-jacket tube heat exchange element is put down
Row is arranged to single or double arrangement, is linked together by steam header and high-temperature medium header, forms a linear chilling
Heat exchanger.Conventional linear rapid-cooling heat exchanger is corresponded due to heat exchanger tube and boiler tube, negligible amounts, in order to reach heat transfer effect,
Heat exchange tube diameter is larger and length is more long, and heat exchanger tube length is limited by pyrolysis furnace height sometimes, at this moment generally uses
" U " type heat exchanger tube carrys out save space highly, and heat exchanger tube is divided into front and rear two sections, and center section connects by 180 ° of bend pipes, but accordingly
Structure and pipe arrangement all complicate, heat exchanger pressure drop is also of a relatively high.
Utility model content
The purpose of this utility model be a kind of simple structure is provided, the linear chilling of new structure that solves the above problems is changed
Hot device.
The linear rapid-cooling heat exchanger of a kind of new structure, mainly by inlet cone 2, cooling medium connector 3, heat exchange element
4th, outlet connector 5, high-temperature medium fairlead 6, high-temperature medium header 7, upper steam adapter 9A, upper steam header 10A, lower steam
Adapter 9B, lower steam header 10B are constituted, it is characterised in that inlet cone 2 is corresponded with cracking outlet of still boiler tube 1, and each enters
The one group of heat exchange element 4 of correspondence of prostomum body 2, every group of heat exchange element 4 is made up of a cylinder 11 and more than 2 heat exchanger tubes 12；Cracking
High-temperature medium in outlet of still boiler tube 1 is incorporated into cooling medium connector 3 by inlet cone 2, and cooling medium is incorporated into cold
But in media connections 3, two media carries out septate heat transfer in cooling medium connector 3 and heat exchange element 4, then heat exchange
High-temperature medium afterwards leads to high-temperature medium header 7 by with outlet connector 5, high-temperature medium fairlead 6, and cooling medium passes through
Upper steam header 10A is led to outlet connector 5.
Linear rapid-cooling heat exchanger of the present utility model, heat exchanger tube 12 is preferably multiple heat exchanger tubes, is preferably evenly distributed on cylinder
In body 11, arrangement mode such as can be in equilateral triangle or square arrangement.
Linear rapid-cooling heat exchanger of the present utility model, cooling medium connector 3 is preferably by lower perforated plate 13 and lower elastic connection
Part 14 is constituted, and lower Flexible Connector 14 is reducer pipe；Outlet connector 5 is preferably by 16 groups of upper perforated plate 15 and upper Flexible Connector
Into upper Flexible Connector 16 is reducer pipe.
Linear rapid-cooling heat exchanger of the present utility model, best upper perforated plate 15 and lower perforated plate 13 are upper and lower edge in convex shoulder
Tube sheet；The stringing of upper perforated plate 15 circle region is evenly distributed with multiple through holes concentric with heat exchanger tube 12；The stringing of lower perforated plate 13 justifies area
Domain is equally evenly distributed with multiple boss concentric with heat exchanger tube 12, and the boss of lower perforated plate 13 connects with the lower end of heat exchanger tube, on
The through hole of tube sheet 15 connects with the upper end of heat exchanger tube 12, forms passage.
Linear rapid-cooling heat exchanger of the present utility model, it is narrow footpath mouthful and the phase of cylinder 11 preferably to go up the bottom of Flexible Connector 16
Connect, top is expanding to form larger cavity, connects with the lower convex shoulder of upper perforated plate 15.The lower top of Flexible Connector 14 be narrow footpath mouthful with
Cylinder 11 connects, and bottom is expanding to form larger cavity, connects with the upper convex shoulder of lower perforated plate 13.
Linear rapid-cooling heat exchanger of the present utility model, the bottom of best inlet cone 2 is single tube, and top is expanding, and into interior
Outer wall pipe, is equipped with thermal insulation barriers between inside and outside wall pipe；The single tube of the bottom of inlet cone 2 is connected with cracking outlet of still boiler tube 1, outer wall pipe
Top connects with the lower convex shoulder of lower perforated plate, and inner side is cased with sleeve pipe 20 at the inner wall tube mouth of pipe, and the top of sleeve pipe 20 connects with lower perforated plate, covers
Stringing circular diameter of the internal diameter of pipe 20 more than or equal to lower perforated plate 13.
The bottom of cooling medium connector 3 is provided with boiler feedwater interface 17 with the vertical side of boiler tube pipe row, is taken over lower steam
9B is connected, and lower steam adapter 9B is in parallel with lower steam header 10B again；The bottom of cooling medium connector 3 with give boiler water interface 17
Opposite side is preferably provided with blowdown interface 19；The top of outlet connector 5 is provided with vapor interface 18 with the vertical side of boiler tube pipe row, with
Upper steam adapter 9A connections, upper steam adapter 9A is in parallel with upper steam header 10A.
High-temperature medium fairlead 6 connects with the upper convex shoulder of upper perforated plate 15, and high-temperature medium is introduced into high-temperature medium header 7, high
Warm medium header 7 is preferably provided with hydraulic decoking hole 8.
The linear rapid-cooling heat exchanger of the utility model using program of finite element to lower perforated plate, lower Flexible Connector, cylinder,
Heat exchanger tube, upper Flexible Connector, upper perforated plate are carried out under various dangerous composite conditions such as shell side pressure-bearing+tube side pressure-bearing+thermal (temperature difference) stress
Stress analysis and evaluation, meet the intensity requirement of Machine Design.
The linear rapid-cooling heat exchanger of the utility model is proposed with program of finite element to be carried out to cracking gas inlet temperature
Numerical analysis, selection is reasonably carried out for Machine Design and provides foundation.
A kind of linear rapid-cooling heat exchanger of the new structure provided using the utility model, its simple structure, cracking gas is stopped
Stay the time short, disposal ability is big, and heat exchanger tube length is shorter, and pressure drop is low, save space.Can be according to the row of cracking outlet of still boiler tube
Cloth, heat exchange unit is arranged to single or double.Newly-built ethene can be not only used for using linear rapid-cooling heat exchanger of the present utility model
The linear rapid-cooling heat exchanger of cracker, can be used for the transformation of the in-service rapid-cooling heat exchanger for coming into operation again.
Brief description of the drawings
The utility model also provides more specifically linear rapid-cooling heat exchanger structure, and as shown in drawings, but the utility model is simultaneously
The structure is not limited only to, it is only one form of which.
Fig. 1 is using a kind of longitudinal cross-section structural representation of linear rapid-cooling heat exchanger of the present utility model.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is using the shaft side figure of linear rapid-cooling heat exchanger of the present utility model.
In figure：1-- cracks outlet of still boiler tube, 2-- inlet cone, 3-- cooling medium connectors, 4-- heat exchange elements, 5--
Outlet connector, 6-- high-temperature medium fairleads, 7-- high-temperature medium headers, 8-- hydraulic decokings hole, 9A-upper steam adapter,
10A-upper steam header, 9B-lower steam adapter, 10B-lower steam header, 11-- cylinders, 12-- heat exchanger tubes, 13-- down tubes
Plate, Flexible Connector under 14--, 15-- upper perforated plates, the upper Flexible Connectors of 16--, 17-- boiler feedwater interfaces, 18-- steam connects
Mouthful, 19-- blowdown interfaces, 20-sleeve pipe.
Specific embodiment
Using the linear rapid-cooling heat exchanger of the of the present utility model a kind of new structure shown in accompanying drawing 1.
Refering to Fig. 1, Fig. 3, rapid-cooling heat exchanger is by inlet cone 2, cooling medium connector 3, heat exchange element 4, outlet connection
Part 5, high-temperature medium fairlead 6, high-temperature medium header 7, hydraulic decoking hole 8, upper steam adapter 9A, upper steam header 10A, lower water
Vapour adapter 9B, lower steam header 10B are constituted.
Refering to Fig. 1, the one end of inlet cone 2 corresponds with cracking outlet of still boiler tube 1, butt welding, the other end and cooling
The butt welding of lower perforated plate 13 of media connections 3.Pintsch process gas enters linear rapid-cooling heat exchanger from cracking outlet of still boiler tube 1.
Refering to Fig. 1, Fig. 2, be evenly arranged by cylinder 11 and in inner barrel three of the corresponding heat exchange element 4 of every boiler tube
Heat exchanger tube 12 is constituted, and heat exchanger tube arrangement mode is equilateral triangle.
Refering to Fig. 1, cooling medium connector 3 is made up of lower perforated plate 13 and lower Flexible Connector 14, and outlet connector 5 is by upper
Tube sheet 15 and upper Flexible Connector 16 are constituted, and upper Flexible Connector 16 and lower Flexible Connector 14 are reducer pipe.
Refering to Fig. 1, Fig. 2, the bottom of cooling medium connector 3 is provided with boiler feedwater interface 17 with the vertical side of boiler tube pipe row,
It is connected with lower steam adapter 9B, lower steam adapter 9B is in parallel with lower steam header 10B again.
Refering to Fig. 1, the bottom of cooling medium connector 3 is provided with blowdown interface 19 with the opposite side of boiler feedwater interface 17.
Refering to Fig. 1, Fig. 2, the top of outlet connector 5 is provided with vapor interface 18 with the vertical side of boiler tube pipe row, with upper steam
Adapter 9A is connected, and upper steam adapter 9A is in parallel with upper steam header 10A.
Refering to Fig. 1, high-temperature medium fairlead 6 connects with the upper convex shoulder of upper perforated plate 15, and high-temperature medium is introduced into high-temperature medium
Header 7, high-temperature medium header 7 is provided with hydraulic decoking hole 8.
High-temperature medium in cracking outlet of still boiler tube 1 is by inlet cone 2 and the He of lower perforated plate 13 of cooling medium connector 3
The cracking gas passage that the heat exchanger tube 12 of heat exchange element 4 is formed after connecting is incorporated into cooling medium connector 3, and cooling medium passes through
The boiler feedwater interface 17 of cooling medium connector 3 is incorporated into cooling medium connector 3, and two media starts in cooling medium
Septate heat transfer in connector 3, subsequent high-temperature medium enters in the heat exchanger tube 12 of heat exchange element 4, and cooling medium enters heat exchange element 4
Cylinder 11 and heat exchanger tube 12 between gap, both along heat exchange element 4 length direction continue septate heat transfer, until outlet
In connector 5.High-temperature medium leads to high-temperature medium and joins by the high-temperature medium fairlead 6 being connected with the top of outlet connector 5
Case 7, cooling medium leads to upper steam header 10A by the upper steam adapter 9A being connected with the steam (vapor) outlet 18 of outlet connector 5,
Two media finally causes downstream by high-temperature medium header 7 and upper steam header 10A respectively.
Claims (10)
1. a kind of linear rapid-cooling heat exchanger, mainly by inlet cone (2), cooling medium connector (3), heat exchange element (4), outlet
Connector (5), high-temperature medium fairlead (6), high-temperature medium header (7), upper steam adapter (9A), upper steam header (10A), under
Steam adapter (9B), lower steam header (10B) composition, it is characterised in that inlet cone (2) is with cracking outlet of still boiler tube (1) one by one
Correspondence, each inlet cone (2) one group of heat exchange element (4) of correspondence, every group of heat exchange element (4) by a cylinder (11) and 2 with
Upper heat exchanger tube (12) composition, heat exchanger tube (12) is evenly distributed in cylinder (11)；High-temperature medium in cracking outlet of still boiler tube (1)
It is incorporated into cooling medium connector (3) by inlet cone (2), cooling medium is incorporated into cooling medium connector (3), two
Plant medium carries out septate heat transfer in cooling medium connector (3) and heat exchange element (4), and then the high-temperature medium after heat exchange leads to
Cross and lead to high-temperature medium header (7) with outlet connector (5), high-temperature medium fairlead (6), cooling medium is connected by exporting
Part (5) leads to steam header 10A.
2. linear rapid-cooling heat exchanger according to claim 1, it is characterised in that heat exchanger tube (12) arrangement mode is positive triangle
Shape or square.
3. linear rapid-cooling heat exchanger according to claim 1, it is characterised in that cooling medium connector (3) is by lower perforated plate
(13) constituted with lower Flexible Connector (14), lower Flexible Connector (14) is reducer pipe；Outlet connector (5) is by upper perforated plate (15)
With upper Flexible Connector (16) composition, upper Flexible Connector (14) is reducer pipe.
4. linear rapid-cooling heat exchanger according to claim 3, it is characterised in that upper perforated plate (15) and lower perforated plate (13) are
Upper and lower edge is in the tube sheet of convex shoulder；Upper perforated plate (15) stringing circle region is evenly distributed with multiple concentric with heat exchanger tube (12) leading to
Hole；Lower perforated plate (13) stringing circle region is equally evenly distributed with multiple boss concentric with heat exchanger tube (12), lower perforated plate (13)
Boss connects with the lower end of heat exchanger tube (12), and the through hole of upper perforated plate (15) connects with the upper end of heat exchanger tube (12), forms passage.
5. linear rapid-cooling heat exchanger according to claim 4, its feature is narrow footpath mouthful in upper Flexible Connector (16) bottom
Connect with cylinder (11), top is expanding to form larger cavity, and the lower convex shoulder with upper perforated plate (15) connects；Lower Flexible Connector
(14) top is that narrow footpath mouthful connects with cylinder (11), and bottom is expanding to form larger cavity, the upper convex shoulder phase with lower perforated plate (13)
Connect.
6. linear rapid-cooling heat exchanger according to claim 4, it is characterised in that the bottom of inlet cone (2) is single tube, on
Portion is expanding, and into inside and outside wall pipe, thermal insulation barriers is housed between inside and outside wall pipe；The single tube of inlet cone (2) bottom and cracking outlet of still
Boiler tube (1) is connected, and outer wall pipe top connects with the lower convex shoulder of lower perforated plate, and inner side is cased with sleeve pipe (20), sleeve pipe at the inner wall tube mouth of pipe
(20) top connects with lower perforated plate (13), the stringing circular diameter of the internal diameter more than or equal to lower perforated plate (13) of sleeve pipe (20).
7. linear rapid-cooling heat exchanger according to claim 4, it is characterised in that high-temperature medium fairlead (6) and upper perforated plate
(15) upper convex shoulder connects, and high-temperature medium is introduced into high-temperature medium header (7).
8. linear rapid-cooling heat exchanger according to claim 1, it is characterised in that cooling medium connector (3) bottom and boiler tube
Pipe arranges vertical side and is provided with boiler feedwater interface (17), be connected with lower steam adapter (9B), lower steam take over (9B) again with lower water
Vapour header (10B) is in parallel；Cooling medium connector (3) bottom is provided with blowdown interface with boiler feedwater interface (17) opposite side
(19)。
9. linear rapid-cooling heat exchanger according to claim 1, it is characterised in that arranged with boiler tube pipe on outlet connector (5) top
Vertical side is provided with vapor interface (18), is connected with upper steam adapter (9A), and upper steam takes over (9A) and upper steam header (10A)
It is in parallel.
10. linear rapid-cooling heat exchanger according to claim 1, it is characterised in that it is clear that high-temperature medium header (7) is provided with waterpower
Burnt hole (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269141.4U CN206257999U (en) | 2016-11-23 | 2016-11-23 | A kind of linear rapid-cooling heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621269141.4U CN206257999U (en) | 2016-11-23 | 2016-11-23 | A kind of linear rapid-cooling heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257999U true CN206257999U (en) | 2017-06-16 |
Family
ID=59027429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621269141.4U Active CN206257999U (en) | 2016-11-23 | 2016-11-23 | A kind of linear rapid-cooling heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257999U (en) |
-
2016
- 2016-11-23 CN CN201621269141.4U patent/CN206257999U/en active Active
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