CN109000488A - A kind of dot matrix heat exchanger - Google Patents
A kind of dot matrix heat exchanger Download PDFInfo
- Publication number
- CN109000488A CN109000488A CN201810642640.0A CN201810642640A CN109000488A CN 109000488 A CN109000488 A CN 109000488A CN 201810642640 A CN201810642640 A CN 201810642640A CN 109000488 A CN109000488 A CN 109000488A
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- fluid
- dot matrix
- heat exchanger
- channel
- bottom plate
- Prior art date
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Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 43
- 239000012530 fluid Substances 0.000 claims abstract description 122
- 239000004744 fabric Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 239000011347 resin Substances 0.000 description 17
- 229920005989 resin Polymers 0.000 description 17
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000004088 simulation Methods 0.000 description 7
- 230000008676 import Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0008—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to heat exchange structures, propose a kind of dot matrix heat exchanger, comprising: bottom plate (3) is provided with the shunting body (4) of dot matrix on the bottom plate (3)；For the first fluid channel of conveying high-viscosity fluid, the first fluid channel includes first fluid entrance (11) and first fluid outlet (12)；For conveying the second fluid channel of low viscosity fluid, the second fluid channel and the first fluid channel arrange that direction interlocks up and down；Wherein, the shunting body (4) of the dot matrix exports (12) from first fluid entrance (11) to first fluid, and the first fluid of inflow is alternately divided and crossed.Dot matrix heat exchanger of the invention is more uniform to the heating and reaction of fluid.
Description
Technical field
The present invention relates to heat exchange structures, more particularly, to a kind of dot matrix heat exchanger.
Background technique
Micro-channel heat exchanger has high-specific surface area, and heat exchange area is big, and heat exchange efficiency is high, can achieve change in a short time
Thermal effect.However, when fluid being caused to flow through, the pressure loss is larger since microchannel size is small.When the viscosity of fluid is very big,
Pressure drop can arrive greatly, so that fluid machinery can not provide enough pressure and fluid is allowed to flow, that is, micro-channel heat exchanger failure.For
Achieve the purpose that heat high viscosity fluid, is typically directly heated in tank reactor, that is, be unable to reach quantity-produced mesh
's.
In order to reach continous way production, traditional bushing type or plate-type exchanger heat high viscosity fluid are generally used.
Casing internal clearance is grade.Heat exchange area is smaller, and heating time is long.Moreover, the inside of resin is thermally conductive slow.And casing changes
Hot device, heating surface concentrate on tube wall, due to, it is thermally conductive slow inside resin, therefore resin uneven heating is even.For the need of emulsifying process
It wants, in the case where using the common plate heat exchanger heated resin by good heat conductive metal material, if using oil heating, wall
Face can be rapidly reached the temperature of heating oil, since the thermal conductivity of fluid is low, if the design residence time is shorter, it is likely that internal flow
There are no start to warm up.If the design residence time is long, the waste of the energy Yu heat exchanger tubing will cause.In addition, being industrially
Convenience, it is more convenient with oil heat using resistance heating ratio.But resistance heating, it be easy to cause in fluid temperature gradient too
Greatly, cause near-wall fluid local heating excessive, heat up too fast, so that part resin carbonation can be made during heating, break
Bad Chemical Manufacture.
Summary of the invention
The present invention is to solve the enhanced heat exchange problem of Micro Channel medium-high viscosity resin.
The present invention proposes a kind of dot matrix heat exchanger, comprising: bottom plate is provided with the shunting body of dot matrix on the bottom plate；
For the first fluid channel of conveying high-viscosity fluid, the first fluid channel includes that first fluid entrance and first fluid go out
Mouthful；For conveying the second fluid channel of low viscosity fluid, cloth above and below the second fluid channel and the first fluid channel
It sets, direction interlocks；Wherein, the shunting body of the dot matrix is exported from first fluid entrance to first fluid, by the first of inflow
Fluid is alternately divided and crosses.
In another embodiment, the present invention proposes a kind of dot matrix heat exchanger, comprising: bottom plate is set on the bottom plate
It is equipped with the shunting body of dot matrix；For the first fluid channel of conveying high-viscosity fluid, the first fluid channel includes first
Fluid inlet and first fluid outlet；Heat conductive bar, the heat conductive bar and the contacts baseplate, and the heat conductive bar and described the
One fluid channel arranges that direction interlocks up and down；Wherein, the shunting body of the dot matrix goes out from first fluid entrance to first fluid
Mouthful, the first fluid of inflow is alternately divided and crossed.
The technical scheme is that microchannel reactant utilizes the dot matrix pillar on plate heat exchanger during the reaction
Reacting fluid is subjected to shunting operation, secondly, the pillar above heat exchanger also can during the reaction heat fluid.Example
Such as, the distribution of dot matrix starts as N and is evenly distributed on the interface of microchannel, and second row is N+1 (N+2, N+3, N+
4, N+5 ... etc.), front two rows forms V shape distribution, and previous dot matrix pillar is after to divided fluid stream and heat exchange, the point of heel row
Battle array pillar is located at the gap rear of front-seat two pillars, shunts again to fluid, and mix after column, therefore fluid is mixed
It closes more uniform.Although subsequent dot matrix pillar is more and more intensive, meanwhile, fluid is in flow process due to constantly to fluid
Heated, the viscosity of fluid reduces as the temperature rises, and resistance becomes smaller, the two the result is that cancelling out each other.
Detailed description of the invention
Fig. 1 is the sectional view of an embodiment of heat exchanger of the invention.
Fig. 2 is the simulation effect picture after the heat exchanger of the prior art exchanges heat on vertical section.
Fig. 3 shows sectional view of the heat exchanger shown in FIG. 1 under side view angle.
Fig. 4 is the simulation effect picture after the heat exchanger of the prior art exchanges heat on horizontal cross-section.
Fig. 5 is the simulation effect picture after the heat exchanger of the prior art exchanges heat on horizontal cross-section.
Fig. 6 is the simulation effect picture after heat exchanger of the invention exchanges heat on horizontal cross-section.
Fig. 7 is the simulation effect picture after heat exchanger of the invention exchanges heat on horizontal cross-section.
Fig. 8 is the sectional view of the another embodiment of emulsifier unit of the invention.
Appended drawing reference
First fluid import 11, first fluid outlet 12；First fluid channel 13；Second fluid import 21；Second fluid
Outlet 22；Second fluid channel 23；Bottom plate 3；Shunting body 4.
Specific embodiment
Embodiments of the present invention are described with reference to the accompanying drawings, wherein identical component is presented with like reference characters.
In the absence of conflict, the technical characteristic in following embodiment and embodiment can be combined with each other.
Since high viscosity resins thermal coefficient is low, easy Local Heat Transfer is excessively high in heat transfer process, and central temperature
It is too low.If heated with conventional microchannel, boundary layer meeting resistance is too big.For this purpose, the invention proposes a kind of dot matrix heat exchanger,
By arranging the method for dot matrix come enhanced heat exchange.
Fig. 1 shows the structure principle chart of an embodiment of heat exchanger of the invention, this is the depression angle of heat exchanger
Figure under degree, and the upper plate of heat exchanger is eliminated, only remain bottom plate 3.As shown in Figure 1, there are two heat exchanger tools of the invention
Fluid channel, first passage respectively in figure from left to right and (is also possible to from top to bottom) second logical from top to bottom
Road.With the shunting body 4 of dot matrix on the bottom plate 3 of two fluid channel infalls.First fluid channel enters with first fluid
Mouth 11 and first fluid outlet 12, second fluid channel have second fluid entrance 21 and second fluid outlet 22.First passage
For the fluid of transfer of highly viscous, such as oil, resin etc..Second channel is used to convey the fluid of low viscosity, such as water.It is first-class
Body channel and second fluid channel are divided into upper and lower level and pass crosswise, but the fluid in the two does not blend.
The arrangement of the shunting body 4 of the dot matrix is as follows: on base 13, going out from first fluid entrance 11 to first fluid
Mouth 12, several rows of placement, density is stepped up (therefore, the size of shunting body 4 gradually reduces), and the longitudinal separation of each row is gradually
It reduces, and front and rear row position interlocks.
The shunting body is, for example, cylindrical body or other shapes.It takes a cylinder as an example, cylinder dimensions diameter such as 200 is micro-
Rice is 1 millimeter high.As shown in Figure 1, from left to right, 800 microns of first row cylindrical body spacing, 600 microns of second row ... until most
200 microns of latter row, then the spacing between the cylindrical body of same row, is gradually reduced compared to previous row.So that fluid passes through
It can be divided into multiply after cylindrical body, then, continue to divide again after converging.By such process, continuous segmentation is continuous to converge
It closes, so that fluid is mixed.Also, cylindrical body has perturbation action, achievees the purpose that reduce temperature gradient, especially in flow
It is more obvious in the case where height.
Cylindrical body is used to heat to fluid simultaneously, and the heat of cylindrical body is conducted from the upper plate and bottom plate 3 of heat exchanger.On
Lower heat-transfer surface (upper plate and bottom plate) and cylindrical body can be integrated.Also, manufacture material be thermally conductive good material (such as
Copper), therefore, the thermal energy of upper plate and bottom plate 3 is promptly transmitted to cylindrical body, it is believed that cylindrical body and 3 equality of temperature of upper plate and bottom plate.
Since cylindrical body spacing starts larger, corresponding temperature is low, and viscosity is big, therefore pressure drop is also smaller.Heel row cylinder
Body spacing is smaller, and corresponding temperature is high, and viscosity is small, therefore pressure drop is also smaller.Also, in flow process, in each heat exchange
The pressure drop of section (every row's cylindrical body) is more balanced.So that ensure that low flow resistance while enhanced heat exchange.
Fig. 2 shows the side view (seeing in 11 side of first fluid import) of heat exchanger shown in FIG. 1.Two sides are second
Fluid inlet 21 and second fluid outlet 22.Multilayer bottom plate 3 can be set, so as to which multilayer dot matrix shunting body 4 is arranged, such as
This, then form staggered first fluid channel 13 and second fluid channel 23 up and down.
Fig. 3 shows sectional view of the heat exchanger shown in FIG. 1 under side view angle (21 side of second fluid import is seen).
Two sides are first fluid import 11 and first fluid outlet 12.First fluid channel 13 and about 23 second fluid channel are handed over
It is wrong.Second fluid channel 23 does not have to segmentation for conveying water.
The present invention is simulated experiment, simulative example: microchannel is 1 millimeter high, 1 centimetre wide, is about 4 millimeters.Inside dimension
Are as follows: first row, 10 200 microns of diameter of 800 microns of cylinder interval are distributed on 1 centimetre of width, second row interval 600
Micron, 400 microns of third row interval, the arrangement of the 4th 200 microns of row interval.Arranging spacing is 1 millimeter.When resin flow is
1.4e-3kg/s flows through 4 row's lattice channels.Heating surface can also be provided by fluid heat supply by resistance heating.
If in the channel for the same size for not setting up pillar.Surface layer quickly reaches wall surface temperature, due to internal thermally conductive
It is low, become " heat insulating belt " for hindering internal resin heating by the resin of near wall.Internal temperature is lower.Temperature gradient is obvious, sees
Fig. 4-5.Especially in resistance heating, it is excessively high to be easy local heating, and bulk temperature is low, or even can make partial carbonization.Pipe
Wall temperature is 140 degrees Celsius.When it is interior have dot matrix when, dot matrix, so that uniformity of temperature profile.See Fig. 6-7.
Fig. 4-5 shows the simulation effect of the heat exchanger of the prior art, when heating, the temperature exhibition of the resin boundary surface of resin
Show.Simulated conditions are as follows: flow 1.4e-3kg/s, 20 degree of inlet temperature, 140 degrees Celsius of wall surface temperature.In Fig. 4-5, Y indicates distance
Distance at resin inlet.Even if can be seen that at 3.3 millimeters, the inside of resin is still heated unevenly, and outside is because of temperature
Excessively high and be carbonized, internal temperature does not reach requirement but.
Fig. 6-7 shows the simulation effect of heat exchanger of the invention, flow 1.4e-3kg/s, 20 degrees Celsius of inlet temperature,
140 degrees Celsius of wall surface temperature.Y indicates the distance apart from resin inlet.As can be seen that at 3.3 millimeters, the inside temperature of resin
Degree is uniform.
The method that heat exchanger of the invention uses the channel of gradual change.In low temperature, channel is larger, and temperature distribution is non-uniform.
Then, temperature is gradually increased, and by column, is carried out repeated segmentation, is reinforced mixing, so that temperature is evenly distributed.
The present invention increases the reaction effect of high viscosity fluid using dot matrix heat exchanger combination microreactor.It needs to illustrate
It is that the arrangement of lattice channels and dot matrix as described herein is having a size of a kind of special shape.Ruler can be changed for different fluid
It is very little.
Fig. 8 shows the structure chart of another embodiment of dot matrix heat exchanger of the invention.Itself and implementation shown in FIG. 1
Mode is similar, and first fluid channel has first fluid entrance 11 and first fluid outlet 12.First fluid channel is for conveying
High viscosity fluid, such as oil.It is that heat-supplying mode is replaced by resistor rod with difference shown in FIG. 1, resistor rod is added by external circuit
Heat.Each heat supply layer is respectively inserted in two reserved holes by the thermally conductive resistance bar construction of two cylinders.Heat is passed by cylindrical wall
Each layer is directed to be heated on the plate of layer.The advantage is that resistance heating is convenient, take up little area, quick heating, can heated perimeter it is larger,
The disadvantage is that heat transfer wall temperature is not easy to control.
Embodiment described above, the only present invention more preferably specific embodiment, those skilled in the art is at this
The usual variations and alternatives carried out within the scope of inventive technique scheme should be all included within the scope of the present invention.
Claims (10)
1. a kind of dot matrix heat exchanger characterized by comprising
Bottom plate (3) is provided with the shunting body (4) of dot matrix on the bottom plate (3)；
For the first fluid channel of conveying high-viscosity fluid, the first fluid channel includes first fluid entrance (11) and
One fluid outlet (12)；
For conveying the second fluid channel of low viscosity fluid, cloth above and below the second fluid channel and the first fluid channel
It sets, direction interlocks；
Wherein, the shunting body (4) of the dot matrix exports (12) from first fluid entrance (11) to first fluid, by the of inflow
One fluid is alternately divided and crosses.
2. dot matrix heat exchanger according to claim 1, which is characterized in that
The shunting body (4) of each row and previous ranking are set staggeredly.
3. dot matrix heat exchanger according to claim 1, which is characterized in that
(12) are exported from first fluid entrance (11) to first fluid, the shunting body (4) of each row is closeer than previous row.
4. dot matrix heat exchanger according to claim 1, which is characterized in that
(12) are exported from first fluid entrance (11) to first fluid, the shunting body (4) of front and rear row is apart from shorter.
5. dot matrix heat exchanger according to claim 1, which is characterized in that
The dot matrix heat exchanger includes multiple groups heat exchange unit, wherein each group of heat exchange unit include bottom plate (3), it is described first logical
Road and the second channel.
6. a kind of dot matrix heat exchanger characterized by comprising
Bottom plate (3) is provided with the shunting body (4) of dot matrix on the bottom plate (3)；
For the first fluid channel of conveying high-viscosity fluid, the first fluid channel includes first fluid entrance (11) and
One fluid outlet (12)；
Heat conductive bar, the heat conductive bar are contacted with the bottom plate (3), and cloth above and below the heat conductive bar and the first fluid channel
It sets, direction interlocks；
Wherein, the shunting body (4) of the dot matrix exports (12) from first fluid entrance (11) to first fluid, by the of inflow
One fluid is alternately divided and crosses.
7. dot matrix heat exchanger according to claim 6 characterized by comprising
The shunting body (4) of each row and previous ranking are set staggeredly.
8. dot matrix heat exchanger according to claim 6, which is characterized in that
(12) are exported from first fluid entrance (11) to first fluid, the shunting body (4) of each row is closeer than previous row.
9. dot matrix heat exchanger according to claim 6, which is characterized in that
(12) are exported from first fluid entrance (11) to first fluid, the shunting body (4) of front and rear row is apart from shorter.
10. dot matrix heat exchanger according to claim 6, which is characterized in that
The dot matrix heat exchanger includes multiple groups heat exchange unit, wherein each group of heat exchange unit include bottom plate (3), it is described first logical
Road and the second channel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2017108259677 | 2017-09-14 | ||
| CN201710825967.7A CN107702566A (en) | 2017-09-14 | 2017-09-14 | A kind of dot matrix heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109000488A true CN109000488A (en) | 2018-12-14 |
| CN109000488B CN109000488B (en) | 2024-05-28 |
Family
ID=61171634
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825967.7A Pending CN107702566A (en) | 2017-09-14 | 2017-09-14 | A kind of dot matrix heat exchanger |
| CN201820958463.2U Active CN208688296U (en) | 2017-09-14 | 2018-06-21 | A kind of micro-structure heat exchanger for high viscosity fluid |
| CN201810642640.0A Active CN109000488B (en) | 2017-09-14 | 2018-06-21 | Dot matrix heat exchanger |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825967.7A Pending CN107702566A (en) | 2017-09-14 | 2017-09-14 | A kind of dot matrix heat exchanger |
| CN201820958463.2U Active CN208688296U (en) | 2017-09-14 | 2018-06-21 | A kind of micro-structure heat exchanger for high viscosity fluid |
Country Status (1)
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702566A (en) * | 2017-09-14 | 2018-02-16 | 华北电力大学 | A kind of dot matrix heat exchanger |
| CN111003697B (en) * | 2019-12-16 | 2023-06-13 | 瓮福达州化工有限责任公司 | High-purity phosphoric acid bleaching process |
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| Publication number | Publication date |
|---|---|
| CN107702566A (en) | 2018-02-16 |
| CN208688296U (en) | 2019-04-02 |
| CN109000488B (en) | 2024-05-28 |
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