CN209706601U - A kind of oxidative coupling ethylene quenching structure - Google Patents
A kind of oxidative coupling ethylene quenching structure Download PDFInfo
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- CN209706601U CN209706601U CN201920133471.8U CN201920133471U CN209706601U CN 209706601 U CN209706601 U CN 209706601U CN 201920133471 U CN201920133471 U CN 201920133471U CN 209706601 U CN209706601 U CN 209706601U
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Abstract
The utility model relates to a kind of oxidative coupling ethylene quenching structures, comprising: an inlet collecting, inlet collecting include at least one first connector；One outlet collection pipe, the outlet collection pipe include at least one second connector；At least one chilling pipe, the first end of the chilling pipe are connect with first connector of the inlet collecting, and the second end of the chilling pipe is connect with second connector of the outlet collection pipe；The chilling pipe is coiled pipe.It the advantage is that, chilling pipe is coiled pipe, effectively improves the surface area contacted with reaction gas, reaction gas can be made to be rapidly decreased to 750 DEG C from 950 DEG C；Structure is simple, install convenient, can removably be replaced to each assembling parts, applied widely；Chilling pipe can be arranged in parallel or circularly symmetric setting or layered arrangement setting, can increase substantially the surface area that chilling structure contact with reaction gas in the case where occupying small in size, raising quenching effect, raising heat exchange efficiency.
Description
Technical field
The utility model relates to chemical equipment technical field more particularly to a kind of oxidative coupling ethylene quenching structures.
Background technique
Currently, having direct method and indirect method from the method for natural gas preparing ethylene.Direct method has oxidative coupling, chlorination
Coupling, direct dehydrogenation method；Indirect method is first to convert synthesis gas for natural gas, then by synthesis gas alkene, including improvement F-T
The methods of method, methanol decomposition alkene.
Consider that indirect method is not the selection of economical rationality, and natural gas from technology, the utilization of resources, environmental protection etc.
Namely for methane oxidative coupling ethylene (Oxidative Coupling of Methane, OCM) is most straightforward approach, therefore several
Over 10 years, OCM is always the emphasis of countries in the world scientist research.
However, Catalyst for Oxidative Coupling of Methane is quick, the strong exothermal reaction under the conditions of high temperature (750~950 DEG C).Reaction
Process is as follows: the methane reaction gas of preheated mistake is entered by Reactor inlet, flows through reactor, in the process, in catalyst
Under the action of, part reaction gas carries out oxidative coupling, is partially converted into ethylene, the heat for reacting releasing makes reaction gas temperature fast
Speed increases, therefore the gas after reaction passes through quenching apparatus immediately, reduces rapidly the temperature of reaction gas, while the boiler in drum
Water enters reaction gas quenching apparatus by down-comer, and the steam of generation returns to drum by tedge, is then sent to steam pipe
Net.The releasing of a large amount of reaction heat, causes reaction bed temperature rapidly to increase, hot spot is generated because being unevenly distributed in reaction,
The catalytic performance of catalyst is seriously affected, therefore this difficulty for resulting in the progress of OCM process in itself effectively withdraws reaction
The temperature of heat is to carry out the critical issue of OCM engineering chemistry database.And in disclosed process flow use grade between heat exchange equipment into
The removal of row reactant heat, heat exchange equipment is the form of similar kettle type reboiler, the heat exchange equipment heat exchange efficiency of the form between grade
It is lower, quickly reaction product gas can not be cooled down, will lead to the residence time increase of reaction product gas in the case of a high temperature,
Yield of ethene accordingly declines.
Therefore, needing one kind can make 950 DEG C of reaction gas be cooled to 750 DEG C rapidly hereinafter, solving simultaneously hot under high temperature
The chilling structure for chemical industry equipment of influence of the stress to material.
Utility model content
The purpose of this utility model is aiming at the shortcomings in the prior art, to provide a kind of oxidative coupling ethylene quenching knot
Structure.
To achieve the above object, the technical scheme adopted by the utility model is that:
A kind of oxidative coupling ethylene quenching structure, comprising:
One inlet collecting, the inlet collecting include at least one first connector；
One outlet collection pipe, the outlet collection pipe include at least one second connector；
At least one chilling pipe, the first end of the chilling pipe and first connector of the inlet collecting connect
It connects, the second end of the chilling pipe is connect with second connector of the outlet collection pipe；
The chilling pipe is coiled pipe.
Preferably, the chilling pipe is detachably connected with the inlet collecting, the outlet collection pipe respectively.
Preferably, the ratio of the outer diameter of the difference and chilling pipe 3 of the internal diameter of the outer diameter of chilling pipe 3 and chilling pipe 3 be less than or
Equal to 1/3, and the ratio is not 0.
Preferably, the inlet collecting includes at least three first connectors, and first connector is annular in shape
It is symmetrical arranged.
Preferably, the outlet collection pipe includes at least three second connectors, and second connector is annular in shape
It is symmetrical arranged.
Preferably, the inlet collecting includes at least two first connectors, and first connector is in parallel
Setting.
Preferably, the outlet collection pipe includes at least two second connectors, and second connector is in parallel
Setting.
Preferably, the chilling pipe is " V " shape or " W " shape coiled pipe.
Preferably, at least two chilling tube layer being made of the chilling pipe, each chilling tube layer include at least one
A chilling pipe.
Preferably, the chilling pipe of the adjacent two chilling tube layer is alternatively arranged.
Preferably, the difference of the quantity of the chilling pipe of the adjacent two chilling tube layer is 1.
Preferably, the quantity of the chilling pipe of each chilling tube layer is equal.
The utility model is had the following technical effect that compared with prior art using above technical scheme
A kind of oxidative coupling ethylene quenching structure of the utility model, chilling pipe are coiled pipe, effectively improve and react
The surface area of gas contact, can make reaction gas be rapidly decreased to 750 DEG C from 950 DEG C；Structure is simple, install convenient, can be to each group
Dress component is removably replaced, applied widely；Chilling pipe can be arranged in parallel or circularly symmetric setting or layered arrangement
Setting can increase substantially the surface area that chilling structure is contacted with reaction gas, effectively improve in the case where occupying small in size
Quenching effect improves heat exchange efficiency.
Detailed description of the invention
Fig. 1 is the schematic diagram of one illustrative examples of the utility model.
Fig. 2 is the schematic diagram of another illustrative examples of the utility model.
Fig. 3 is the schematic diagram of a preferred embodiment of the utility model.
Fig. 4 is the schematic diagram of a preferred embodiment of the utility model.
Fig. 5 is the schematic diagram of a preferred embodiment of the utility model.
Fig. 6 is the schematic diagram of a preferred embodiment of the utility model.
Appended drawing reference therein are as follows: inlet collecting 1；Chilling pipe 2；Outlet collection pipe 3；First connector 4；Second connection
Mouth 5.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are in the premise for not making creative work
Under every other embodiment obtained, fall within the protection scope of the utility model.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but not as the utility model
It limits.
The utility model illustrative examples, as shown in Figure 1, a kind of oxidative coupling ethylene quenching structure, including entrance
Header 1, outlet collection pipe 2 and chilling pipe 3, the both ends of chilling pipe 3 are carried out with inlet collecting 1 and outlet collection pipe 2 respectively
Connection.
Inlet collecting 1 is provided with 4 (not shown) of the first connector, inlet collecting 1 by the first connector 4 with
The first end of chilling pipe 3 connects.
Outlet collection pipe 2 is provided with the second connector 5, outlet collection pipe 2 pass through the second connector 5 and chilling pipe 3 the
The connection of two ends.
Chilling pipe 3 is coiled pipe, and coiled pipe can be " V " shape coiled pipe or " W " shape coiled pipe or multiple " V " shapes
The coiled pipe of connection.
The connection type of inlet collecting 1, outlet collection pipe 2 and chilling pipe 3 is to be detachably connected, including but not limited to spiral shell
It tethers and connects.
In addition, chilling pipe 3 can also be helical coil or spring like pipe.
Chilling pipe 3 selects above-mentioned shape, can increase the surface area of 3 haptoreaction gas of chilling pipe, to increase caloric receptivity.
Chilling pipe 3 is made of the higher metal of heating conduction, including but not limited to stainless steel, aluminium alloy.
Chilling pipe 3 is hollow tube, the ratio of the outer diameter of the difference and chilling pipe 3 of the internal diameter of the outer diameter and chilling pipe 3 of chilling pipe 3
Value is less than or equal to 1/3, and the ratio is not 0.
In the illustrative examples, inlet collecting 1 is identical with the shape of outlet collection pipe 2, in the form of annular discs.Or
It is, as shown in Fig. 2, inlet collecting 1 is identical with the shape of outlet collection pipe 2, it is pipeline.
The application method of the oxidative coupling ethylene quenching structure of the present embodiment is as follows: chilling structure is mounted on reactor
Interior, the liquid inlet of inlet collecting 1 and the liquid outlet of outlet collection pipe 2 are arranged in the outside of reactor, and with drum phase
Connection；When reaction, the boiler water in drum enters in chilling pipe 3 from inlet collecting 1, and boiler water absorbs anti-in chilling pipe 3
Should gas heat, rapid vaporization formed steam；Steam is along the serpentine configuration or helical structure of chilling pipe 3 to outlet collection pipe 2
Flowing, and it is back to drum through outlet collection pipe 2, and be delivered to steam pipe network.
It above are only the most basic technical solution that can be realized the utility model technical effect.
Based on the above technical solution, the quenching effect of chilling structure is advanced optimized, available urgency
Cold effect more preferably chilling structure.
One preferred embodiment of the utility model, as shown in figure 3, being set in parallel 2 first in inlet collecting 1
4 (not shown) of connector, likewise, being set in parallel 2 the second connectors 5, inlet collecting on outlet collection pipe 2
1 and outlet collection pipe 2 be connected respectively with 2 chilling pipes 3.
Therefore, it on the basis of the technical solution, can be extended, i.e. inlet collecting 1 and outlet collection pipe 2 can be with
It is attached with multiple (3,4,5 ...) chilling pipe 3 disposed in parallel, to improve the surface contacted with reaction gas
Product.
Another preferred embodiment of the utility model, as shown in figure 4, being symmetrically arranged in a ring in inlet collecting 1
There are 4 the first connectors 4, likewise, being symmetrically provided with 4 the second connectors 5, entrance collection on outlet collection pipe 2 in a ring
Flow tube 1 and outlet collection pipe 2 are connected with 4 chilling pipes 3 respectively.
Therefore, it on the basis of the technical solution, can be extended, i.e. inlet collecting 1 and outlet collection pipe 2 can be with
Symmetrically arranged chilling pipe 3 is attached in a ring with multiple (3,5,6 ...), is contacted in raising with reaction gas
While surface area, the volume of inlet collecting 1 and outlet collection pipe 2 can be reduced.
Another preferred embodiment of the utility model is arranged as shown in figure 5, being arranged to have three layers in inlet collecting 1 in stratiform
First connector 4 of column, is followed successively by 2 the first connectors, 4,1 first the first connectors of connector 4 and 24 from top to bottom.
Likewise, the second connector 5 to have three layers in layered arrangement is arranged on outlet collection pipe 2, it is followed successively by 2 second companies from top to bottom
5,1 second the second connectors of connector 5 and 25 of interface.Inlet collecting 1 and outlet collection pipe 2 respectively with 5 chilling pipes 3
It is connected.
In the present embodiment, the difference of the chilling pipe quantity of each layer of chilling tube layer and adjacent chilling tube layer is 1.
Therefore, it on the basis of the technical solution, can be extended, i.e. inlet collecting 1 and outlet collection pipe 2 can be with
It is attached with multiple in the chilling pipe 3 of layered arrangement, chilling pipe 3 can form multiple chilling tube layer (2 layers, 4 layers, 5
Layer ...), technical effect is to improve the number of chilling pipe 3 as far as possible in the case where the finite volume of inlet collecting 1
Amount, effectively improves the surface area contacted with reaction gas.
Another preferred embodiment of the utility model is arranged as shown in fig. 6, being arranged to have three layers in inlet collecting 1 in stratiform
First connector 4 of column, each layer includes 3 the first connectors 4.Likewise, setting haves three layers in layer on outlet collection pipe 2
Second connector 5 of shape arrangement, each layer includes 3 the second connectors 5.Inlet collecting 1 and outlet collection pipe 2 respectively with
9 chilling pipes 3 are connected.
In the present embodiment, 3 quantity of chilling pipe of each layer of chilling tube layer is identical, and the chilling pipe of each layer of chilling tube layer
3 quantity is at least 2.
Therefore, it on the basis of the technical solution, can be extended, i.e. inlet collecting 1 and outlet collection pipe 2 can be with
It being attached with the chilling pipe 3 of multiple layered arrangements, chilling pipe 3 can form multiple chilling tube layer (2 layers, 4 layers ...),
Technical effect is to improve the quantity of chilling pipe 3 as far as possible in the case where the finite volume of inlet collecting 1, effectively improve with
The surface area of reaction gas contact.
The foregoing is merely the utility model preferred embodiment, be not intended to limit the embodiments of the present invention and
Protection scope should can appreciate that all in the utility model specification and diagram to those skilled in the art
Hold made equivalent replacement and obviously change obtained scheme, the protection model of the utility model should all be included in
In enclosing.
Claims (10)
1. a kind of oxidative coupling ethylene quenching structure characterized by comprising
One inlet collecting (1), the inlet collecting (1) include at least one first connector (4)；
One outlet collection pipe (2), the outlet collection pipe (2) include at least one second connector (5)；
At least one chilling pipe (3), the first end of the chilling pipe (3) are connect with described the first of the inlet collecting (1)
Mouth (4) connection, the second end of the chilling pipe (3) are connect with second connector (5) of the outlet collection pipe (2)；
The chilling pipe (3) is coiled pipe.
2. oxidative coupling ethylene quenching structure according to claim 1, which is characterized in that the inlet collecting (1)
Including at least three first connectors (4), first connector (4) is annularly symmetrical arranged.
3. oxidative coupling ethylene quenching structure according to claim 2, which is characterized in that the outlet collection pipe (2)
Including at least three second connectors (5), second connector (5) is annularly symmetrical arranged.
4. oxidative coupling ethylene quenching structure according to claim 1, which is characterized in that the inlet collecting (1)
Including at least two first connectors (4), first connector (4) is set in parallel.
5. oxidative coupling ethylene quenching structure according to claim 4, which is characterized in that the outlet collection pipe (2)
Including at least two second connectors (5), second connector (5) is set in parallel.
6. oxidative coupling ethylene quenching structure according to claim 1, which is characterized in that the chilling pipe (3) is " V "
Shape or " W " shape coiled pipe.
7. oxidative coupling ethylene quenching structure according to claim 1, which is characterized in that at least two by the chilling
The chilling tube layer that (3) are constituted is managed, each chilling tube layer includes at least one described chilling pipe (3).
8. oxidative coupling ethylene quenching structure according to claim 7, which is characterized in that two adjacent chillings
The chilling pipe (3) of tube layer is alternatively arranged.
9. oxidative coupling ethylene quenching structure according to claim 8, which is characterized in that two adjacent chillings
The difference of the quantity of the chilling pipe (3) of tube layer is 1.
10. oxidative coupling ethylene quenching structure according to claim 7, which is characterized in that each chilling tube layer
The chilling pipe (3) quantity it is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920133471.8U CN209706601U (en) | 2019-01-25 | 2019-01-25 | A kind of oxidative coupling ethylene quenching structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920133471.8U CN209706601U (en) | 2019-01-25 | 2019-01-25 | A kind of oxidative coupling ethylene quenching structure |
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| CN209706601U true CN209706601U (en) | 2019-11-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166226A1 (en) * | 2021-02-02 | 2022-08-11 | 山东省章丘鼓风机股份有限公司 | Phase-change cooling type permanent magnet direct-drive blower |
-
2019
- 2019-01-25 CN CN201920133471.8U patent/CN209706601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166226A1 (en) * | 2021-02-02 | 2022-08-11 | 山东省章丘鼓风机股份有限公司 | Phase-change cooling type permanent magnet direct-drive blower |
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