CN103673726B - Distributor of azeotropic distillation heat exchanger - Google Patents
Distributor of azeotropic distillation heat exchanger Download PDFInfo
- Publication number
- CN103673726B CN103673726B CN201210325103.6A CN201210325103A CN103673726B CN 103673726 B CN103673726 B CN 103673726B CN 201210325103 A CN201210325103 A CN 201210325103A CN 103673726 B CN103673726 B CN 103673726B
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- Prior art keywords
- heat exchanger
- distributing pipe
- side direction
- tube
- connecting plate
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- 238000010533 azeotropic distillation Methods 0.000 title claims abstract description 18
- 230000003628 erosive effect Effects 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 abstract description 50
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 238000009835 boiling Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a distributor of an azeotropic distillation heat exchanger. The distributor comprises a plurality of heat exchange tubes, a distribution tube and a flow guide structure, wherein the heat exchange tubes are arranged between a lower tube plate and a lower tube box, the distribution tube is provided with lateral holes, the flow guide structure is composed of a round baffle and an annular baffle, and an annular gap is kept between the round baffle and the annular baffle. A round connecting plate provided with connection tube holes is arranged between the heat exchange tubes and the distribution tube, the distribution tube is inserted into one tube hole in the round connecting plate, and the directions and the positions of the lateral holes are adjusted, so that the center lines of the lateral holes point to the center axis of the heat exchanger, the center lines of the upper lateral holes and the center lines of the lower lateral holes are on the same planes respectively, the distribution tube and the round connecting plate are welded and fixed, and the distribution tube and the round baffle are welded and fixed. The distributor overcomes the defects that an existing distributor structure is not uniform in two-phase fluid distribution and is complicated to manufacture and overhaul, first-phase fluids and second-phase fluids exist in all heat exchange tubes and have an azeotropic action, assembling and disassembling are simple, the distribution tube is convenient to adjust and replace, and efficiency of the heat exchanger is not influenced by the size of the heat exchanger and the number of the heat exchange tubes.
Description
Technical field
The invention belongs to the partial structurtes of chemical industry equipment, be applied to azeotropic distillation heat exchanger in chemical industry, petrochemical plant, particularly a kind of azeotropic distillation heat exchanger distributor.
Background technology
The vertical heat exchanger of azeotropic distillation technology is adopted in chemical industry, petrochemical plant, utilize the boiling point of even phase (mixture of first-phase fluid and second-phase fluid) lower than the characteristic of first-phase fluid boiling point and second-phase fluid boiling point, adopt low-pressure steam or utilize its azeotropic of the equal mutual-assistance of other heating medium for heating, thus can save low-pressure steam and utilize used heat as far as possible, reducing running cost by economize energy.The precondition that first-phase fluid and second-phase fluid reach azeotropic all has first-phase fluid and second-phase fluid to exist in every root heat exchanger tube, and the structure of distributor is to first-phase fluid and second-phase fluid, and the uniform distribution in heat exchanger tube has a great impact.Existing azeotropic distillation heat exchanger dispensing arrangement is as follows.
Structure one (as shown in Figure 1, 2): namely a distributing pipe C is set in every root heat exchanger tube B end at lower perforated plate A place, the side direction of distributing pipe C and bottom have aperture E, F, first-phase fluid H flows into distributing pipe C by the mouth of pipe bottom lower tube box D through distributing pipe bottom opening F, and second-phase fluid G flows through ring-shaped baffle J by the lower tube box D side direction mouth of pipe and flows into distributing pipe C through distributing pipe side direction perforate E.The shortcoming of this structure is: 1. because distributing pipe C and heat exchanger tube B assembles by root, and when heat exchanger diameter is comparatively large, heat exchanger tube radical is more, assembling is comparatively loaded down with trivial details.2. distributing pipe C and heat exchanger tube B spot welding, cantilever is installed, and easily comes off, damages under the impact of fluid, and distributing pipe C comes off or repair difficulty after damaging; 3. first-phase fluid flows into from the mouth of pipe bottom lower tube box, evenly can arrive the bottom of every root distributing pipe C, enter distributing pipe C from the bottom opening F of distributing pipe.When second-phase fluid flows through lower tube box top from the lower tube box side direction mouth of pipe, because distributing pipe C is to the resistance of fluid, the interface of second-phase fluid and first-phase fluid produces potential difference along the radial direction of bobbin carriage, the distributing pipe side direction perforate E of middle part may be caused to be positioned at the below of two-phase interface, what namely the bottom opening F of these distributing pipes and side direction perforate E flowed into is all first-phase fluid, there is not azeotropism in the monophasic fluid in these heat exchanger tubes, efficiency of heat exchanger reduces.Lower tube box diameter is larger, heat exchanger tube radical is more, and efficiency of heat exchanger is lower.
Structure two (shown in Fig. 3,4): first-phase fluid 9 is flowed into by the mouth of pipe bottom lower tube box 4, is flowed to the distributing pipe 3 of middle part by the annular gap 12 between circular baffle plate 7 and ring-shaped baffle 10 from the distributing pipe of periphery; Meanwhile, second-phase fluid 8 flows through ring-shaped baffle 10 by the lower tube box 4 side direction mouth of pipe, flows to the distributing pipe 3 of middle part from the distributing pipe of periphery.Shortcoming is: 1. because distributing pipe 3 and heat exchanger tube 2 assemble by root, and when heat exchanger diameter is comparatively large, heat exchanger tube 2 radical is more, assembling is comparatively loaded down with trivial details; 2. because distributing pipe 3 and circular baffle plate 7 are for being threaded, therefore cannot ensure that every root distributing pipe side direction perforate 5,6 sidewise hole center line when same level points to heat exchanger central axis simultaneously, the horizontal interface of second-phase fluid and first-phase fluid may be caused unstable, upper and lower two the side direction perforates of the distributing pipe at some position are caused to be positioned at the side of two-phase interface, the fluid of desired inflow that what namely two side direction perforates up and down of these distributing pipes flowed into may not be, azeotropism in these heat exchanger tubes is insufficient, and efficiency of heat exchanger reduces; 3. distributing pipe and circular baffle plate are for being threaded, and also likely loosen under action of a fluid, come off.
Summary of the invention
The object of the present invention is to provide a kind of azeotropic distillation heat exchanger distributor, mainly solve the technical problem existing for above-mentioned prior art, overcome existing dispensing arrangement two-phase fluid skewness and manufacture, overhaul loaded down with trivial details shortcoming, make in every root heat exchanger tube, all have first-phase fluid and second-phase fluid to exist and azeotropism occurs, and mounting or dismounting are simply convenient to regulate, change distributing pipe, heat exchanger efficiency is not by the impact of heat exchanger size, heat exchanger tube radical.
For achieving the above object, the present invention realizes like this.
A kind of azeotropic distillation heat exchanger distributor, it comprises the some heat exchanger tubes, the distributing pipe that are arranged between lower perforated plate and lower tube box, this distributing pipe has side direction perforate; And by the flow-guiding structure maintaining the circular baffle plate of annular gap, ring-shaped baffle is formed jointly; It is characterized in that: the circular connecting plate having and connect pore is set between described heat exchanger tube, distributing pipe, described distributing pipe inserts the pore on circular connecting plate and adjusts side direction perforate orientation and position of opening, all side direction perforate center lines are made to point to heat exchanger central axis, and ensure that all upper and lower side direction perforate center lines are respectively in same level, distributing pipe and circular connecting plate are welded and fixed, then distributing pipe and circular baffle plate are welded and fixed.
Described azeotropic distillation heat exchanger distributor, is characterized in that: the assembly that described distributing pipe, circular connecting plate and circular baffle plate are formed is connected with lower perforated plate with screw, stop washer and gasket seal by pull bar securing member.
Described azeotropic distillation heat exchanger distributor, is characterized in that: arrange erosion control baffle plate inside described ring baffle, this erosion control baffle plate between-between the perforate of side direction top and the perforate of side direction bottom.
Above structure also compared with prior art, the invention has the advantages that.
1. in the present invention, the upper and lower side direction perforate center line of all distributing pipes points to heat exchanger central axis simultaneously, upper and lower side direction perforate center line is respectively in same level, make the horizontal interface of two-phase fluid highly stable and be in all the time upper side to perforate and lower side to perforate between, ensure that first-phase fluid flows into distributing pipe from the side direction bottom perforate of distributing pipe, second-phase fluid flows into distributing pipe from the perforate of side direction top, all has first-phase fluid and second-phase fluid exist and azeotropism occurs in every root heat exchanger tube.
2. on ring baffle, arrange erosion control baffle plate in invention, the center line of ring baffle is just in time positioned on the horizontal interface of two-phase fluid, effectively prevents two-phase fluid in the effect of liquidating of joint, adds the stability of two-phase fluid horizontal interface.
3. the assembly that in the present invention, distributing pipe, circular connecting plate, circular baffle plate and distance sink tube, pull bar securing member form can be assembled separately in advance, then assemble with heat exchanger lower perforated plate, the assembly precision of sub-assembly can be ensured, the assembly precision of sub-assembly and heat exchanger lower perforated plate can be ensured again, can be used for the heat exchanger of various diameter, especially to major diameter heat exchanger, the manufacturing cycle is substantially reduced.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of existing azeotropic distillation heat exchanger dispensing arrangement.
Fig. 2 is the partial enlarged drawing of distributing pipe and heat exchanger tube connecting portion in Fig. 1.
In Fig. 1,2: A-lower perforated plate, B-heat exchanger tube, C-distributing pipe, D-lower tube box, E-side direction perforate, F-bottom opening, G-second-phase direction of flow, H-first-phase direction of flow, J-ring-shaped baffle.
Fig. 3 is the structural representation of another kind of existing azeotropic distillation heat exchanger dispensing arrangement.
Fig. 4 is the partial enlarged drawing of distributing pipe and heat exchanger tube connecting portion in Fig. 3.
In Fig. 3,4: 1-lower perforated plate, 2-heat exchanger tube, 3-distributing pipe, 4-lower tube box, the perforate of 5-side direction top, the perforate of 6-side direction bottom, 7-circular baffle plate, 8-second-phase direction of flow, 9-first-phase direction of flow, 10-ring-shaped baffle, 11-pull bar, distance sink tube positioned fastener, 12-annular gap.
Fig. 5 is the structural representation of azeotropic distillation heat exchanger dispensing arrangement of the present invention.
Fig. 6 is the partial enlarged drawing of distributing pipe and heat exchanger tube connecting portion in Fig. 5.
In Fig. 5,6: 1-lower perforated plate, 2-heat exchanger tube, 3-distributing pipe, 4-lower tube box, the perforate of 5-side direction top, the perforate of 6-side direction bottom, 7-circular baffle plate, 8-second-phase direction of flow, 9-first-phase direction of flow, 10-ring-shaped baffle, 11-distance sink tube, pull bar securing member, 12-annular gap, 13-circular connecting plate, 14-gasket seal, 15-screw, stop washer, 16-erosion control baffle plate.
Detailed description of the invention
Refer to Fig. 5,6, the invention discloses a kind of azeotropic distillation heat exchanger distributor.As shown in the figure: it comprises the some heat exchanger tubes 2, the distributing pipe 3 that are arranged between lower perforated plate 1 and lower tube box 4, this distributing pipe 3 has side direction perforate 5,6; And by the flow-guiding structure maintaining the circular baffle plate 7 of annular gap 12, ring-shaped baffle 10 is formed jointly.The circular connecting plate 13 having and connect pore is set between described heat exchanger tube 2, distributing pipe 3, described distributing pipe 3 inserts the pore on circular connecting plate 13 and adjusts side direction perforate 5,6 orientation and position of opening, all side direction perforate 5,6 center lines are made to point to heat exchanger central axis, and ensure that all upper and lower side direction perforate center lines are respectively in same level, distributing pipe 3 and circular connecting plate 13 are welded and fixed, then distributing pipe 3 and circular baffle plate 7 are welded and fixed.
In structure of the present invention, because the upper and lower side direction perforate center line of all distributing pipes points to heat exchanger central axis simultaneously, upper and lower side direction perforate center line is respectively in same level, make the horizontal interface of two-phase fluid highly stable and be in all the time upper side to perforate and lower side to perforate between, ensure that first-phase fluid flows into distributing pipe from the side direction bottom perforate of distributing pipe, second-phase fluid flows into distributing pipe from the perforate of side direction top, all has first-phase fluid and second-phase fluid exist and azeotropism occurs in every root heat exchanger tube.
In the present invention, the assembly that described distributing pipe 3, circular connecting plate 13 and circular baffle plate 7 are formed is connected with lower perforated plate 1 with screw, stop washer 15 and gasket seal 14 by pull bar securing member 11.Like this, the assembly precision of sub-assembly can be ensured, the assembly precision of sub-assembly and heat exchanger lower perforated plate can be ensured again, can be used for the heat exchanger of various diameter, especially to major diameter heat exchanger, substantially reduce the manufacturing cycle.
When the present invention uses, first-phase fluid is flowed into by the mouth of pipe bottom lower tube box 4, by the annular gap 12 between circular baffle plate 7 and ring-shaped baffle 10 to erosion control baffle plate 16, flows to the distributing pipe of middle part from the distributing pipe of periphery; Meanwhile, second-phase fluid flows through ring-shaped baffle 10 to erosion control baffle plate by the lower tube box 4 side direction mouth of pipe, flows to the distributing pipe of middle part from the distributing pipe of periphery.Ring baffle arranges erosion control baffle plate, and the center line of ring baffle is just in time positioned on the horizontal interface of two-phase fluid, effectively prevents two-phase fluid in the effect of liquidating of joint, adds the stability of two-phase fluid horizontal interface.
Be only preferred embodiment of the present invention in sum, be not used for limiting practical range of the present invention.Namely all equivalences done according to the content of the present patent application the scope of the claims change and modify, and all should be technology category of the present invention.
Claims (3)
1. an azeotropic distillation heat exchanger distributor, it comprises the some heat exchanger tubes (2), the distributing pipe (3) that are arranged between lower perforated plate (1) and lower tube box (4), this distributing pipe (3) has side direction perforate (5,6); And by maintaining circular baffle plate (7), the common flow-guiding structure formed of ring-shaped baffle (10) of annular gap (12); It is characterized in that: the circular connecting plate (13) having and connect pore is set between described heat exchanger tube (2), distributing pipe (3), described distributing pipe (3) inserts the pore on circular connecting plate (13) and adjusts side direction perforate (5,6) orientation and position of opening, all side direction perforates (5,6) center line is made to point to heat exchanger central axis, and ensure that all upper and lower side direction perforate center lines are respectively in same level, distributing pipe (3) and circular connecting plate (13) are welded and fixed, then distributing pipe (3) and circular baffle plate (7) are welded and fixed.
2. azeotropic distillation heat exchanger distributor according to claim 1, is characterized in that: the assembly that described distributing pipe (3), circular connecting plate (13) and circular baffle plate (7) are formed is connected with lower perforated plate (1) with screw, stop washer (15) and gasket seal (14) by pull bar securing member (11).
3. azeotropic distillation heat exchanger distributor according to claim 1 and 2, is characterized in that: described ring baffle (10) inner side arranges erosion control baffle plate (16), and this erosion control baffle plate (16) is between upper side direction perforate (5) and lower side direction perforate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210325103.6A CN103673726B (en) | 2012-09-05 | 2012-09-05 | Distributor of azeotropic distillation heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210325103.6A CN103673726B (en) | 2012-09-05 | 2012-09-05 | Distributor of azeotropic distillation heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103673726A CN103673726A (en) | 2014-03-26 |
| CN103673726B true CN103673726B (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210325103.6A Active CN103673726B (en) | 2012-09-05 | 2012-09-05 | Distributor of azeotropic distillation heat exchanger |
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| Country | Link |
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| CN (1) | CN103673726B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3399272B1 (en) * | 2017-05-04 | 2020-02-26 | BITZER Kühlmaschinenbau GmbH | Fluid distributor assembly for heat exchangers |
| CN109780894A (en) * | 2018-12-27 | 2019-05-21 | 中国寰球工程有限公司 | Vertical shell-and-tube flexible tubesheet heat exchanger |
| CN111821709A (en) * | 2020-08-02 | 2020-10-27 | 扬州普立特科技发展有限公司 | A reflux tank with adjustable reflux ratio |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150749A (en) * | 1990-02-27 | 1992-09-29 | Energiagazdalkodasi Intezet | Heat exchanger apparatus, particularly for hybrid heat pumps operated with non-azeotropic work fluids |
| CN202083271U (en) * | 2011-04-28 | 2011-12-21 | 中国石油化工股份有限公司 | Distributor of azeotropic distillation heat exchanger |
| CN102538387A (en) * | 2011-11-22 | 2012-07-04 | 张周卫 | Liquefied natural gas (LNG) low temperature liquefied three-level refrigeration spiral wound tube type heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10170181A (en) * | 1996-12-04 | 1998-06-26 | Mitsubishi Heavy Ind Ltd | Tube plate structure of heat exchanger using double wall heat exchanger tube |
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2012
- 2012-09-05 CN CN201210325103.6A patent/CN103673726B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150749A (en) * | 1990-02-27 | 1992-09-29 | Energiagazdalkodasi Intezet | Heat exchanger apparatus, particularly for hybrid heat pumps operated with non-azeotropic work fluids |
| CN202083271U (en) * | 2011-04-28 | 2011-12-21 | 中国石油化工股份有限公司 | Distributor of azeotropic distillation heat exchanger |
| CN102538387A (en) * | 2011-11-22 | 2012-07-04 | 张周卫 | Liquefied natural gas (LNG) low temperature liquefied three-level refrigeration spiral wound tube type heat exchanger |
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| CN103673726A (en) | 2014-03-26 |
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