CN103673726A - Distributor of azeotropic distillation heat exchanger - Google Patents
Distributor of azeotropic distillation heat exchanger Download PDFInfo
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- CN103673726A CN103673726A CN201210325103.6A CN201210325103A CN103673726A CN 103673726 A CN103673726 A CN 103673726A CN 201210325103 A CN201210325103 A CN 201210325103A CN 103673726 A CN103673726 A CN 103673726A
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- heat exchanger
- distributing pipe
- side direction
- tube
- perforate
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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
In chemical industry, petrochemical plant, adopt the vertical heat exchanger of azeotropic distillation technology, 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, thereby can save low-pressure steam and utilize as far as possible used heat, by saving the energy, reduce running cost.The precondition that first-phase fluid and second-phase fluid reach azeotropic is in every heat exchanger tube, all to have first-phase fluid and second-phase fluid to exist, and the structure of distributor is to first-phase fluid and second-phase fluid, 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): in the every heat exchanger tube B end at lower perforated plate A place, a distributing pipe C is set, the side direction of distributing pipe C and bottom have aperture E, F, first-phase fluid H flows into distributing pipe C by the lower tube box D bottom mouth of pipe through distributing pipe bottom opening F, and second-phase fluid G is flowed through ring-shaped baffle J through distributing pipe side direction perforate E inflow distributing pipe C by the lower tube box D side direction mouth of pipe.The shortcoming of this structure is: 1. because distributing pipe C and heat exchanger tube B assemble by root, when heat exchanger diameter is large, heat exchanger tube radical when more assembling comparatively loaded down with trivial details.2. distributing pipe C and heat exchanger tube B spot welding, cantilever is installed, and easily come off, damage, and distributing pipe C comes off or damages the rear difficulty of repairing under the impact of fluid; 3. first-phase fluid flows into from the lower tube box bottom mouth of pipe, can evenly arrive the bottom of every distributing pipe C, from the bottom opening F of distributing pipe, enters distributing pipe C.When second-phase fluid is flowed through lower tube box top from the lower tube box side direction mouth of pipe, resistance due to distributing pipe C convection cell, the interface of second-phase fluid and first-phase fluid is along the radially generation potential difference of bobbin carriage, may cause the distributing pipe side direction perforate E of middle part to be positioned at the below of two-phase interface, what be that the bottom opening F of these distributing pipes and side direction perforate E flow 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 lower tube box 4 bottom mouths of pipe, flows to the distributing pipe 3 of middle part from peripheral distributing pipe by the annular gap 12 between circular baffle plate 7 and ring-shaped baffle 10; Meanwhile, second-phase fluid 8, by the lower tube box 4 side direction mouths of pipe ring-shaped baffle 10 of flowing through, flows to the distributing pipe 3 of middle part from peripheral distributing pipe.Shortcoming is: 1. due to distributing pipe 3 with heat exchanger tube 2 by root assembling, when heat exchanger diameter is large, heat exchanger tube 2 radicals when more assembling comparatively loaded down with trivial details; 2. due to distributing pipe 3 with circular baffle plate 7 for being threaded, therefore cannot guarantee that every distributing pipe side direction perforate 5,6 sidewise hole center line when same level points to heat exchanger central axis simultaneously, may cause the horizontal interface of second-phase fluid and first-phase fluid unstable, cause upper and lower two the side direction perforates of distributing pipe at some position to be positioned at a side of two-phase interface, what be that two side direction perforates up and down of these distributing pipes flow into may not be the fluid of desired inflow, azeotropism in these heat exchanger tubes is insufficient, and efficiency of heat exchanger reduces; 3. distributing pipe, with circular baffle plate for being threaded, also likely becomes flexible, comes off under the effect of fluid.
Summary of the invention
The object of the present invention is to provide a kind of azeotropic distillation heat exchanger distributor, mainly solve the existing technical problem of above-mentioned prior art, overcome existing dispensing arrangement two-phase fluid skewness and manufacture, overhauled loaded down with trivial details shortcoming, make all have first-phase fluid and second-phase fluid to exist in every heat exchanger tube azeotropism occurs, and mounting or dismounting are simply convenient to regulate, change distributing pipe, heat exchanger efficiency not to be subject to the impact of heat exchanger size, heat exchanger tube radical.
For achieving the above object, the present invention realizes like this.
An azeotropic distillation heat exchanger distributor, it comprises some heat exchanger tubes, the distributing pipe being arranged between lower perforated plate and lower tube box, has side direction perforate on this distributing pipe; And by maintaining the circular baffle plate of annular gap, the flow-guiding structure that ring-shaped baffle forms jointly; It is characterized in that: between described heat exchanger tube, distributing pipe, arrange and there is the circular connecting plate that connects pore, described distributing pipe inserts the pore on circular connecting plate and adjusts side direction perforate orientation and position of opening, make all side direction perforate center lines point to heat exchanger central axis, and guarantee 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 are formed with circular baffle plate 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: described ring baffle inner side arranges erosion control baffle plate, and this erosion control baffle plate is between-side direction top perforate and the perforate of side direction bottom.
By said 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 all the time in upper side to perforate and lower side between perforate, guarantee 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 to exist and generation azeotropism in every heat exchanger tube.
2. in invention, erosion control baffle plate is set on ring baffle, the center line of ring baffle is just in time positioned on the horizontal interface of two-phase fluid, effectively prevents that two-phase fluid from, in the effect of liquidating of joint, having increased 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, can guarantee the assembly precision of sub-assembly, can guarantee again the assembly precision of sub-assembly and heat exchanger lower perforated plate, the heat exchanger that can be used for various diameters, especially to major diameter heat exchanger, greatly shortened the manufacturing cycle.
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, the perforate of E-side direction, 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 location securing member, 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.
The specific embodiment
Refer to Fig. 5,6, the invention discloses a kind of azeotropic distillation heat exchanger distributor.As shown in the figure: it comprises some heat exchanger tubes 2, the distributing pipe 3 being arranged between lower perforated plate 1 and lower tube box 4, has side direction perforate 5,6 on this distributing pipe 3; And by maintaining the circular baffle plate 7 of annular gap 12, the flow-guiding structure that ring-shaped baffle 10 forms jointly.Between described heat exchanger tube 2, distributing pipe 3, arrange and there is the circular connecting plate 13 that connects pore, described distributing pipe 3 inserts the pore on circular connecting plate 13 and adjusts side direction perforate 5,6 orientation and position of opening, make all side direction perforate 5,6 center lines point to heat exchanger central axis, and guarantee that all upper and lower side direction perforate center lines are respectively in same level, distributing pipe 3 is welded and fixed with circular connecting plate 13, 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 all the time in upper side to perforate and lower side between perforate, guarantee 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 to exist and generation azeotropism in every 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, can guarantee the assembly precision of sub-assembly, can guarantee again the assembly precision of sub-assembly and heat exchanger lower perforated plate, can be used for the heat exchanger of various diameters, especially, to major diameter heat exchanger, greatly shorten the manufacturing cycle.
When the present invention uses, first-phase fluid is flowed into by the lower tube box 4 bottom mouths of pipe, 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 peripheral distributing pipe; Meanwhile, second-phase fluid is flowed through ring-shaped baffle 10 to erosion control baffle plate by the lower tube box 4 side direction mouths of pipe, flows to the distributing pipe of middle part from peripheral distributing pipe.Erosion control baffle plate is set on ring baffle, and the center line of ring baffle is just in time positioned on the horizontal interface of two-phase fluid, effectively prevents that two-phase fluid from, in the effect of liquidating of joint, having increased 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.Be that all equivalences of doing according to the content of the present patent application the scope of the claims change and modify, all should be technology category of the present invention.
Claims (3)
1. an azeotropic distillation heat exchanger distributor, it comprises some heat exchanger tubes (2), the distributing pipe (3) being arranged between lower perforated plate (1) and lower tube box (4), has side direction perforate (5,6) on this distributing pipe (3); And by the common flow-guiding structure forming of circular baffle plate (7), ring-shaped baffle (10) that maintains annular gap (12); It is characterized in that: between described heat exchanger tube (2), distributing pipe (3), arrange and there is the circular connecting plate (13) that connects pore, described distributing pipe (3) inserts the pore on circular connecting plate (13) and adjusts side direction perforate (5,6) orientation and position of opening, make all side direction perforates (5,6) center line point to heat exchanger central axis, and guarantee that all upper and lower side direction perforate center lines are respectively in same level, distributing pipe (3) is welded and fixed with circular connecting plate (13), 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, it 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 side direction top perforate (5) and side direction bottom 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 true CN103673726A (en) | 2014-03-26 |
| CN103673726B 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110770526A (en) * | 2017-05-04 | 2020-02-07 | 比泽尔制冷设备有限公司 | Fluid distributor assembly for heat exchanger |
| CN111821709A (en) * | 2020-08-02 | 2020-10-27 | 扬州普立特科技发展有限公司 | Reflux tank capable of adjusting reflux ratio |
Citations (4)
| 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 |
| JPH10170181A (en) * | 1996-12-04 | 1998-06-26 | Mitsubishi Heavy Ind Ltd | Tube plate structure of heat exchanger using double wall heat exchanger tube |
| 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 |
-
2012
- 2012-09-05 CN CN201210325103.6A patent/CN103673726B/en active Active
Patent Citations (4)
| 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 |
| JPH10170181A (en) * | 1996-12-04 | 1998-06-26 | Mitsubishi Heavy Ind Ltd | Tube plate structure of heat exchanger using double wall heat exchanger tube |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110770526A (en) * | 2017-05-04 | 2020-02-07 | 比泽尔制冷设备有限公司 | Fluid distributor assembly for heat exchanger |
| CN110770526B (en) * | 2017-05-04 | 2021-07-23 | 比泽尔制冷设备有限公司 | Fluid distributor assembly for heat exchanger |
| 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 | Reflux tank capable of adjusting reflux ratio |
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| Publication number | Publication date |
|---|---|
| CN103673726B (en) | 2015-06-17 |
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