CN208373044U - High efficient heat exchanging reactor - Google Patents
High efficient heat exchanging reactor Download PDFInfo
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- CN208373044U CN208373044U CN201820805909.8U CN201820805909U CN208373044U CN 208373044 U CN208373044 U CN 208373044U CN 201820805909 U CN201820805909 U CN 201820805909U CN 208373044 U CN208373044 U CN 208373044U
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Abstract
The utility model discloses a kind of high efficient heat exchanging reactors, the outer wall and inner wall of every reaction tube are all helically corrugated, helical baffles are equipped in cylinder, several reaction tubes pass through helical baffles and are uniformly set in cylinder, and the hand of spiral of helical baffles is consistent with the hand of spiral of helical corrugation shaped reaction tubulation.Reaction mass in the utility model reaction tube helically advances in flowing, the boundary layer of reaction mass side can effectively be destroyed, improve heat transfer efficiency, mass transfer effect is enhanced simultaneously, and the helical corrugation shape of reaction tube outer wall also destroys the boundary layer of heat transferring medium side, heat transfer efficiency is also greatly enhanced；Helical baffles make heat transferring medium be in approximate helical flow regime, further improve heat exchange efficiency, substantially without dead zone, pressure drop it is small, substantially without fouling；Heat transferring medium uses tangentially symmetrical input and output material mode simultaneously, and enhanced heat exchange efficiency is realized entirely without dead zone, while reducing the noise of vibration and generation.
Description
Technical field
1. the utility model relates to reaction unit, in particular to a kind of to be mainly used for strongly exothermic and need to protect wherein
Hold certain temperature
2. the high efficient heat exchanging reactor of the heterogeneous phase chemical reaction of degree range.
Background technique
The selective oxidation reaction of hydro carbons and other organic matters is typically all strong exothermal reaction, and industrial application value is more next
More it is valued by people.Strong exothermal reaction refers generally to the reaction that enthalpy is greater than 200kJ/mol.This kind of reaction rate is big, and companion
With very exothermic, excessively high reaction temperature frequently can lead to side reaction, for the extensive fixed bed reactors of industrial application,
Even " temperature runaway " phenomenon can occur for misoperation.It is strongly exothermic and need to wherein keep certain temperature range heterogeneous phase chemistry it is anti-
The requirement for coping with reactor is high, it requires reacting fluid to be evenly distributed, rapidly and efficiently exchange heat to control temperature, to improve
The selectivity of target product.
That there are fluid distrbutions is uneven for traditional shell-and-tube reactor with baffle, heat exchange efficiency is low, refrigerant pressure drop height etc.
Disadvantage.Its major defect has: tube wall is smooth and straight, and cooling water side and reaction mass side all easily form boundary layer, and heat transfer efficiency is low；
Mass-and heat-transfer is poor between pipeline center and tube wall, causes pipeline center's heat is more difficult to take away；Simple baffle forms be easy to cause stream
Body is unevenly distributed, and can locally have " short circuit " and " dead zone "；Because thermal discharge is big and temperature is sensitive, lesser pipe is often selected
Diameter causes wall effect to increase, and the inhomogeneities of Catalyst packing increases etc..
CN100443154A discloses a kind of tube assembly containing screw section, which uses noncircular cross section
And helical structure can make the heat fast exchange generated in reaction process, be easy to this configuration increases heat exchange area
Temperature control.But its reaction heat for managing interior central axis position material still cannot be exported quickly, and heat transfer efficiency still needs to be further increased, from
And the stability of product quality is caused not to be ideal.
CN205462152U discloses the green syt reaction unit that a kind of direct oxidation method prepares propylene oxide, the reaction
Device is provided with metal fin in hollow pipe, and heat-transfer effect has clear improvement.But there is processing complexity, catalyst dress in the device
It unloads difficulty, be not optimised the problems such as external heat transfer.
Utility model content
The technical problem to be solved by the utility model is to for above-mentioned prior art heat exchange efficiency is low, mass transfer is poor, adds
The deficiencies of work is complicated, provides that a kind of heat transfer efficiency is high, mass transfer effect is good, easy processing, is particularly suitable for hydrogen peroxide direct oxidation
Propylene prepares the high efficient heat exchanging reactor of the strong exothermal reactions such as propylene oxide.
A kind of high efficient heat exchanging reactor, the upper tube box set gradually including several reaction tubes, from top to bottom, upper tube
Plate,
Cylinder, lower perforated plate, lower tube box.
Distributor is equipped in the lower tube box.The bottom of the lower tube box is equipped with material inlet.The material inlet and institute
Distributor is stated to be connected.The top of the upper tube box is equipped with the material outlet being connected with top box pipe.The side of the cylinder is set
There are two heat transferring medium imports and two heat transferring medium outlets, two heat transferring medium imports are in the same horizontal line, described
Two heat transferring mediums export also in the same horizontal line.
The outer wall and inner wall of every reaction tube are all helically corrugated.Helical baffles are equipped in the cylinder,
So that heat transferring medium, which is in, is threadingly advanced state.Several reaction tubes pass through the helical baffles and are uniformly distributed setting
In the cylinder, the hand of spiral of the helical baffles is consistent with the hand of spiral of the helical corrugation shaped reaction tubulation.
Each heat transferring medium import and the outlet of each heat transferring medium between the cylinder inboard wall and reaction tube outer wall
Space be connected.
Two heat transferring medium imports are with two heat transferring mediums outlet in uniformly right in one of the embodiments,
Claim distribution setting, and each heat transferring medium import direction and each heat transferring medium export direction and the cylinder
Circumferencial direction is in tangential.
The advantages of the utility model and the utility model has the advantages that
1, the inner wall of the utility model reaction tube is helically corrugated, and the reaction mass in reaction tube is in flowing
It is threadingly advanced, can effectively destroy the boundary layer of reaction mass side, improve heat transfer efficiency, while enhancing mass transfer effect, and
The helical corrugation shape of reaction tube outer wall also destroys the boundary layer of heat transferring medium side, and heat transfer efficiency is also greatly enhanced.This
The reaction tube shape of utility model designs, and improves reaction efficiency, while preventing the accumulation of local energy.
2, the utility model is equipped with helical baffles and further mentions so that heat transferring medium is in approximate helical flow regime
High heat exchange efficiency, substantially without dead zone, pressure drop it is small, substantially without fouling.
3, the circumference in the utility model each heat transferring medium import direction and each heat transferring medium export direction and cylinder
Direction is in tangential, and is symmetric, and the utility model uses tangential input and output material mode, further strengthens the spiral of heat transferring medium
Flow effect, enhanced heat exchange efficiency, realize the utility model in entirely without dead zone, while reduce the utility model vibration and
The noise of generation.
4, the utility model quality is more stable, easy processing, catalyst easily assembling.
5, the utility model is compared with common response device, and under the conditions of same operation, the utility model heat transfer efficiency is higher than general
The 40%~70% of logical reactor, under pilot plant conditions, temperature control is more stable in the utility model reaction tube.
Detailed description of the invention
Fig. 1 is the front view of the utility model.
Fig. 2 is the structural schematic diagram of the utility model helical corrugation shaped reaction tubulation.
Fig. 3 is the structural schematic diagram of the utility model helical baffles.
Fig. 4 is that the utility model heat transferring medium flows schematic diagram.
Fig. 5 is that reaction mass flows schematic diagram in the utility model reaction tube.
Fig. 6 is the utility model heat transferring medium import schematic diagram.
Fig. 7 is that the utility model heat transferring medium exports schematic diagram.
Specific embodiment
The utility model is comprehensively described below with reference to relevant drawings for the ease of understanding the utility model,.
The preferred embodiment of the utility model is given in attached drawing.But the utility model can be embodied in many different forms, and
It is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes in the disclosure to the utility model
Hold more thorough and comprehensive.
It should be noted that it can be directly in another element when element is referred to as " setting " in another element
Above or there may also be elements placed in the middle.
Unless otherwise defined, this paper practical all technical and scientific terms are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.
Embodiment 1
Please refer to Fig. 1 to Fig. 7, a kind of high efficient heat exchanging reactor, including several reaction tubes 1, material inlet 39, material
30, the two heat transferring medium imports in outlet, 7, two heat transferring mediums outlets 71, helical baffles 11, distributor 5, from top to bottom successively
Upper tube box 3, upper perforated plate 31, cylinder 33, lower perforated plate 35, the lower tube box 37 of setting.
Wherein, distributor 5 is equipped in lower tube box 37.The bottom of lower tube box 35 is equipped with material inlet 39.Material inlet 39 with
Distributor 5 is connected.The top of upper tube box 3 is equipped with the material outlet 30 being connected with top box pipe 3.
Specifically, the side of cylinder 33 is equipped with two heat transferring medium imports 7 and two heat transferring medium outlets 71, two heat exchange
In the same horizontal line, two heat transferring mediums export 71 also in the same horizontal line to medium entrance 7.Two heat transferring medium imports 7
It is in be uniformly and symmetrically distributed setting, and each 7 direction of heat transferring medium import and each heat transferring medium with two heat transferring medium outlets 71
71 directions are exported all with the circumferencial direction of cylinder 33 in tangentially, the utility model heat transferring medium uses tangential input and output material mode, and
Input and output material direction is consistent with the direction of helical baffles 11.
Specifically, the inner and outer wall of every reaction tube 1 is all helically corrugated.Helical corrugation shaped reaction tubulation 1
Size design can be by the disturbance that 1 inside spin of reaction tube flows as base using the reaction mass for realizing reaction tube central axis position
It is quasi-.Since the helical corrugation of reaction tube 1 designs, the shape so that reaction mass in reaction tube 1 helically advances in flowing
State.Helical baffles 11 are equipped in cylinder 33, so that heat transferring medium, which is in, is threadingly advanced state.Several reaction tubes 1 pass through
Helical baffles 11 are uniformly set in cylinder 33, the hand of spiral and helical corrugation shaped reaction tubulation of helical baffles 11
1 hand of spiral is consistent.Each heat transferring medium import 7 and each heat transferring medium outlet 71 and 33 inner wall of cylinder and reaction tube
Space between 1 outer wall is connected.
Prepare the process and effect of propylene oxide reaction for hydrogen peroxide direct oxidation propylene for the present embodiment below:
When use: the loading catalyst in reaction tube 1, by reaction mass hydrogen peroxide, propylene, solvent from lower tube box 37
Material inlet 39 input, entered in reaction tube 1 through distributor 5, reaction mass in reaction tube 1 helically flowing and
It reacts under catalyst action, after reacting the heat of generation by the heat transferring medium heat exchange outside reaction tube 1, heat is by band
It walks, the product after reaction is exported from the material outlet 30 at 3 top of upper tube box.
If following table 1 is reaction bed maximum temperature point ratio of the variety classes reaction tube reactor at 40 DEG C of water-bath
Compared with table 2
The propylene for being variety classes shell-and-tube reactor at 40 DEG C of water-bath to propylene oxide selectively relatively.
Reaction bed maximum temperature point of the 1 variety classes reaction tube reactor of table at 40 DEG C of water-bath compares
| Time (h)) | 24 | 48 | 72 | 96 | 120 | 144 |
| Common shell-and-tube reactor (DEG C) | 61 | 58.7 | 56.2 | 55.4 | 53.8 | 52.1 |
| The utility model high efficient heat exchanging reactor (DEG C) | 49 | 47.3 | 46.2 | 45.3 | 44.2 | 43.5 |
Propylene of the 2 variety classes shell-and-tube reactor of table at 40 DEG C of water-bath selectively compares propylene oxide
| Time (h) | 24 | 48 | 72 | 96 | 120 | 144 |
| Common shell-and-tube reactor | 95.21% | 95.22% | 95.26% | 95.18% | 95.27% | 95.24% |
| The utility model high efficient heat exchanging reactor | 96.51% | 96.54% | 96.49% | 96.52% | 96.53% | 96.54% |
| The utility model high efficient heat exchanging reactor+catalyst | 99.78% | 99.82% | 99.83% | 99.81% | 99.79% | 99.82% |
Compared with common shell-and-tube reactor, under identical operating conditions, using the heat exchange of the utility model reactor
Efficiency can be improved 40 ~ 70%.In kiloton pilot scale, temperature measuring point temperature compares in the reaction tube of same catalyst height, this
Temperature in the reaction tube 1 of utility model is 7 ~ 12 DEG C lower than the temperature of common tubulation.
The course of work and its working principle of the utility model
In use, catalyst is filled in reaction tube 1, by reaction mass from lower tube box 37 after static mixer
Material inlet 39 inputs, and enters in reaction tube 1 through distributor 5, reacts under the effect of the catalyst, reacts generation
After amount of heat is by the heat transferring medium heat exchange outside reaction tube 1, heat is pulled away, and the product after reaction is at the top of upper tube box 3
The output of material outlet 30 (can also upper entering and lower leaving).Certainly, the utility model, which can also be used only as heat exchanger, (cancels distribution
Device).
The advantages of the utility model and the utility model has the advantages that
1, the inner wall of the utility model reaction tube 1 is helically corrugated, and the reaction mass in reaction tube 1 is in flowing
Helically advance, can effectively destroy the boundary layer of reaction mass side, improve heat transfer efficiency, while enhancing mass transfer effect,
And the helical corrugation shape of 1 outer wall of reaction tube also destroys the boundary layer of heat transferring medium side, heat transfer efficiency is also greatly enhanced.
1 shape of reaction tube of the utility model designs, and improves reaction efficiency, while preventing the accumulation of local energy.
2, the utility model is equipped with helical baffles 11, so that heat transferring medium is in approximate helical flow regime, further
Improve heat exchange efficiency, substantially without dead zone, pressure drop it is small, substantially without fouling.
3, the circle in each 7 direction of heat transferring medium import of the utility model and the outlet of each heat transferring medium 71 directions and cylinder
Circumferential direction is in tangential, and is symmetric, and the utility model uses tangential input and output material mode, further strengthens the spiral shell of heat transferring medium
Flow effect is revolved, enhanced heat exchange efficiency is realized in the utility model entirely without dead zone, while reducing the vibration of the utility model
With the noise of generation.
4, the utility model quality is more stable, easy processing, catalyst easily assembling.
5, the utility model is compared with common response device, and under the conditions of same operation, the utility model heat transfer efficiency is higher than general
The 40%~70% of logical reactor, under pilot plant conditions, temperature control is more stable in the utility model reaction tube 1.
A kind of embodiment of the utility model above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (2)
1. a kind of high efficient heat exchanging reactor, the upper tube box set gradually including several reaction tubes, from top to bottom, upper perforated plate,
Cylinder, lower perforated plate, lower tube box, the lower tube box is interior to be equipped with distributor, and the bottom of the lower tube box is equipped with material inlet, institute
It states material inlet to be connected with the distributor, the top of the upper tube box is equipped with the material outlet being connected with top box pipe, institute
The side for stating cylinder is equipped with two heat transferring medium imports and two heat transferring medium outlets, and two heat transferring medium imports are same
On horizontal line, two heat transferring mediums outlet is also in the same horizontal line, which is characterized in that every reaction tube it is outer
Wall and inner wall are all helically corrugated, and helical baffles are equipped in the cylinder, so that heat transferring medium, which is in, is threadingly advanced state,
Several reaction tubes pass through the helical baffles and are uniformly set in the cylinder, the helical baffles
The hand of spiral is consistent with the hand of spiral of the helical corrugation shaped reaction tubulation, each heat transferring medium import and each described
Space of the heat transferring medium outlet all between the cylinder inboard wall and reaction tube outer wall is connected.
2. high efficient heat exchanging reactor according to claim 1, which is characterized in that two heat transferring medium imports with it is described
Two heat transferring medium outlets are in be uniformly and symmetrically distributed setting, and each heat transferring medium import direction and each heat exchange are situated between
Matter export direction is all with the circumferencial direction of the cylinder in tangential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820805909.8U CN208373044U (en) | 2018-05-29 | 2018-05-29 | High efficient heat exchanging reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820805909.8U CN208373044U (en) | 2018-05-29 | 2018-05-29 | High efficient heat exchanging reactor |
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| Publication Number | Publication Date |
|---|---|
| CN208373044U true CN208373044U (en) | 2019-01-15 |
Family
ID=64969364
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820805909.8U Active CN208373044U (en) | 2018-05-29 | 2018-05-29 | High efficient heat exchanging reactor |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124604A (en) * | 2019-05-29 | 2019-08-16 | 浙江大学衢州研究院 | A kind of more threaded coiler reactors for strong exothermal reaction |
| CN113694835A (en) * | 2021-09-30 | 2021-11-26 | 江苏航运职业技术学院 | Spiral propelling fixed bed reactor |
-
2018
- 2018-05-29 CN CN201820805909.8U patent/CN208373044U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124604A (en) * | 2019-05-29 | 2019-08-16 | 浙江大学衢州研究院 | A kind of more threaded coiler reactors for strong exothermal reaction |
| CN113694835A (en) * | 2021-09-30 | 2021-11-26 | 江苏航运职业技术学院 | Spiral propelling fixed bed reactor |
| CN113694835B (en) * | 2021-09-30 | 2023-06-27 | 江苏航运职业技术学院 | Spiral propulsion fixed bed reactor |
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