CN222724327U - Reaction kettle for preparing viscoelastic polymer emulsion - Google Patents
Reaction kettle for preparing viscoelastic polymer emulsion Download PDFInfo
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- CN222724327U CN222724327U CN202421491128.8U CN202421491128U CN222724327U CN 222724327 U CN222724327 U CN 222724327U CN 202421491128 U CN202421491128 U CN 202421491128U CN 222724327 U CN222724327 U CN 222724327U
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- reaction kettle
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- mixing
- polymer emulsion
- reaction
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 89
- 239000000839 emulsion Substances 0.000 title claims abstract description 24
- 229920000642 polymer Polymers 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000003999 initiator Substances 0.000 claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 abstract 2
- 239000012530 fluid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000009775 high-speed stirring Methods 0.000 description 4
- 238000012688 inverse emulsion polymerization Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 239000004908 Emulsion polymer Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
本实用新型涉及一种粘弹性聚合物乳液制备用反应釜。该反应釜有效防止局部混合不均，避免在反应釜中形成死区或局部混合不均的情况，有助于保证反应的均匀进行。本实用新型采用的结构包括混料釜、反应釜主体和恒温加热/制冷装置，反应釜主体为套管式，套管通过管道连接于恒温加热/制冷装置的冷/热媒进出口，所述的混料釜通过管道连接于反应釜主体的内腔；反应釜主体上设置有引发剂加料管和氮气入口，内部均布设置有若干个分散挡板，所述的分散挡板上设置有感应器，伸入反应釜主体的引发剂加料管上均布设置有多孔喷淋头，多孔喷淋头的入口端设置有止逆阀，所述的反应釜主体内还设置有温度传感器。
The utility model relates to a reactor for preparing a viscoelastic polymer emulsion. The reactor effectively prevents local uneven mixing, avoids the formation of dead zones or local uneven mixing in the reactor, and helps to ensure the uniform progress of the reaction. The structure adopted by the utility model includes a mixing kettle, a reactor body and a constant temperature heating/refrigeration device. The reactor body is a sleeve type, and the sleeve is connected to the cold/hot medium inlet and outlet of the constant temperature heating/refrigeration device through a pipeline. The mixing kettle is connected to the inner cavity of the reactor body through a pipeline; an initiator feeding pipe and a nitrogen inlet are arranged on the reactor body, and a plurality of dispersion baffles are evenly arranged inside. Sensors are arranged on the dispersion baffles, and porous spray heads are evenly arranged on the initiator feeding pipe extending into the reactor body. A check valve is arranged at the inlet end of the porous spray head, and a temperature sensor is also arranged in the reactor body.
Description
Technical Field
The utility model relates to a reaction kettle, in particular to a reaction kettle for preparing viscoelastic polymer emulsion.
Technical Field
Inverse emulsion polymerization is one of the ideal methods for obtaining high molecular weight polymers, and is particularly suitable for large-scale mass production of high molecular weight emulsions.
In recent years, the product obtained by the reverse emulsion polymerization fracturing fluid thickener has the characteristics of high molecular weight, long molecular chain, high dissolution speed and the like, is used for different fracturing construction sites, is simple and convenient to operate, can effectively improve the construction efficiency, and has wide application prospect in large-scale fracturing sites. Thus, the use of inverse emulsion polymers in fracturing fluids is becoming increasingly important. In the inverse emulsion polymerization process, the viscosity of the whole system can change along with the reaction, and when an initiator is added, the initiator is unevenly dispersed, so that the local temperature is increased, and the explosion polymerization phenomenon occurs. Or the temperature of the system cannot be timely sensed along with the fact that a probe of the thermometer is stuck in the reaction process, and when the temperature of the system is acquired, the phenomenon that the temperature cannot be controlled occurs when the initiator consumption is used. Meanwhile, the inverse emulsion polymerization process is longer, continuous stirring is needed in the whole process, the low-speed stirring motor and the high-speed stirring motor have heat dissipation phenomenon in the working process, and the motor short circuit is caused by untimely heat dissipation when the low-speed stirring motor and the high-speed stirring motor work for a long time, so that the service life of the motor is shortened.
When synthesizing the viscoelastic polymer for the fracturing fluid, the introduced functional monomer has a certain steric hindrance in the polymerization process, so the selection and the addition mode of the initiator are particularly critical. The publication number is CN 207507472U, the patent name is a polymer emulsion synthesis reaction system, and the synthesis reaction system of polymer emulsion is disclosed, and has the problems that nitrogen is not designed to be introduced to improve the deoxidization efficiency and the initiation efficiency, abrupt change of the system viscosity in the inverse emulsion polymerization process is not designed to be considered, and local temperature rise and even the explosion phenomenon are caused by different initiator adding modes.
Disclosure of Invention
In view of the above, the utility model aims to overcome the problems that the prior reaction kettle is difficult to realize staged control stirring and gel and adhesion are caused by high temperature, and provides a reaction kettle suitable for preparing viscoelastic polymer emulsion so as to meet the production of the viscoelastic polymer emulsion required in fracturing fluid, and can be widely applied to the production of other inverse emulsion polymers.
The reaction kettle for preparing the viscoelastic polymer emulsion comprises a mixing kettle, a reaction kettle main body and a constant-temperature heating/refrigerating device, wherein the reaction kettle main body is a sleeve, the sleeve is connected with a cold/hot medium inlet and a cold/hot medium outlet of the constant-temperature heating/refrigerating device through pipelines, and the mixing kettle is connected with an inner cavity of the reaction kettle main body through pipelines;
The reaction kettle is characterized in that an initiator feeding pipe and a nitrogen inlet are arranged on the reaction kettle main body, a plurality of dispersing baffles are uniformly distributed in the reaction kettle main body, inductors are arranged on the dispersing baffles, porous spray heads are uniformly distributed on the initiator feeding pipe extending into the reaction kettle main body, a check valve is arranged at the inlet end of each porous spray head, and a temperature sensor is further arranged in the reaction kettle main body.
Further, the reaction kettle main body is also provided with a sight glass.
Further, a mixing stirrer is arranged in the mixing kettle, and stirring paddles arranged on the mixing stirrer are frame-type stirring paddles.
Further, a raw material discharging valve and a material injecting pump are arranged on a pipeline connected with the main body of the mixing kettle.
Further, the tail of the reaction kettle main body is also provided with a discharging valve.
Further, a heating switch, a refrigerating switch, a temperature display and a switch of the constant temperature heating/refrigerating device are arranged on the constant temperature heating/refrigerating device.
The utility model has the beneficial effects that:
1. The reaction kettle adopts the sleeve type, and the temperature required by a reaction system is controlled through the constant-temperature heating/refrigerating device, so that the reaction temperature can be effectively controlled, the smooth proceeding of the reaction process is ensured, the temperature rise caused by self-acceleration of the reaction is reduced, and the phenomena of bursting and aggregation, gel generation or kettle sticking are avoided.
2. The check valve is arranged on the initiator charging pipe to prevent the feed liquid from flowing backwards, and the porous spraying is adopted to realize the uniform and controllable temperature control and speed addition of the multistage initiator in the reaction system, so that the problem of bursting and aggregation caused by excessive local initiator is effectively avoided.
3. The utility model adds the dispersing baffle in the reaction kettle, which can change the flowing mode and turbulence degree of the reaction materials in the reaction kettle, thereby increasing the mixing and stirring effect, and effectively breaking the flowing of the fluid, avoiding the situation of dead zone or partial uneven mixing in the reaction kettle, and helping to ensure the uniform progress of the reaction.
4. The intelligent sensors are arranged on the dispersion baffle plate, so that the thickness of the attachments on the surface of the baffle plate can be accurately sensed, and once the attachments exceed the threshold value of the sensors, the system gives an alarm so as to realize periodic maintenance and preventive maintenance, thereby prolonging the service life of equipment and fully playing the stirring role of the baffle plate in the reaction process.
Drawings
FIG. 1 is a cross-sectional view of a reaction vessel provided by the utility model.
FIG. 2 is a schematic structural view of an initiator feed tube.
In the figure, a 1-mixing stirrer, a 2-mixing kettle, a 3-stirring paddle, a 4-raw material discharging valve, a 5-charging pump, a 6-initiator charging pipe, a 7-temperature sensor, an 8-nitrogen inlet, a 9-dispersing baffle, a 10-cold/hot medium reflux pipeline, a 11-discharging valve, a 12-constant temperature heating/refrigerating device, a 13-heating switch, a 14-refrigerating switch, a 15-temperature display, a 16-constant temperature heating/refrigerating device switch, a 17-sight glass, an 18-cold/hot medium inlet, a 19-cold/hot medium outlet, a 20-reaction kettle body, a 21-intelligent sensor, a 22-porous spray header and a 23-check valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
This embodiment provides a reaction kettle for preparing viscoelastic polymer emulsion, which comprises a mixing kettle 2, a reaction kettle main body 20 and a constant temperature heating/refrigerating device 12, as shown in fig. 1.
As an implementation mode in this embodiment, the mixing kettle 2 is connected to the inner cavity of the reaction kettle main body 20 through a pipeline, a mixing stirrer 1 is arranged in the mixing kettle 2, the mixing stirrer 1 is provided with a high-speed dispersion shaft, a high-speed stirring motor is used for controlling, and a stirring paddle 3 arranged on the mixing stirrer 1 is a frame type stirring paddle. The mixing kettle 2 sends raw materials into the inner cavity of the reaction kettle main body 20 through the raw material discharging valve 4 and the material injecting pump 5.
As one implementation mode in the embodiment, the reaction kettle main body 20 is a sleeve, the sleeve is connected with the cold/heat medium inlet 18 and the cold/heat medium outlet 19 of the constant temperature heating/refrigerating device 12 through pipelines, the circulating cold/heat medium can ensure that the reaction process is smoothly carried out, the temperature rise caused by self acceleration of the reaction is reduced, the phenomenon of sudden aggregation or kettle sticking is avoided, and the quality of emulsion products is improved.
As an implementation mode in the embodiment, the reaction kettle main body 20 is provided with an initiator feeding pipe 6 and a nitrogen inlet 8, the oxygen removal efficiency can be improved by introducing nitrogen, the polymerization inhibition effect of oxygen on free radical polymerization can be effectively removed, the initiation efficiency is improved, the reaction kettle main body 20 is internally and uniformly provided with a plurality of dispersing baffles 9, the flow mode and the turbulence degree in the reaction kettle can be changed by the baffles, the heat transfer effect is improved, the heat transfer efficiency between reaction materials and reaction media can be improved by changing the flow path of fluid, the reaction rate is accelerated, and the reaction time is reduced. Meanwhile, the flow direction and speed of the fluid can be adjusted through the arrangement of the baffle plate, the phenomenon that partial mixing is uneven possibly existing in the reaction kettle can be effectively prevented, the situation that dead zones or partial mixing is uneven is avoided being formed in the reaction kettle, and the uniform reaction is guaranteed. The dispersing baffle 9 is provided with an inductor 21, the initiator feeding pipe 6 extending into the reaction kettle main body 20 is uniformly provided with a plurality of porous spray heads 22, the inlet end of the porous spray heads 22 is provided with a check valve 23, as shown in fig. 2, and the reaction kettle main body 20 is also internally provided with a temperature sensor 7.
As an implementation manner in this embodiment, the reaction kettle main body 20 is further provided with a sight glass 17, which is beneficial to observing the internal conditions of the reaction kettle in different time periods.
As an implementation manner in this embodiment, the reactor main body 20 realizes discharging through a discharging valve 11 provided at the tail.
As one implementation of this embodiment, the constant temperature heating/cooling device 12 is provided with a heating switch 13, a cooling switch 14, a temperature display 15, and a constant temperature heating/cooling device switch 16.
The working principle and the flow of the utility model are as follows:
After the utility model is installed, the reaction raw materials are uniformly mixed by the mixing kettle 2, then the raw material discharging 4 is opened, the raw material is added into the reaction kettle 20 by the material injection pump 5, and simultaneously N 2 is introduced from the nitrogen inlet 8. The temperature of the reaction system is observed through the temperature sensor 7 on the reaction kettle main body 20, after the temperature reaches the required temperature, the initiator is slowly and uniformly added from the initiator feeding pipe 6, the constant-temperature heating/refrigerating device 12 is used for being connected with the cold/heat medium inlet 18 and the cold/heat medium outlet 19, the reaction temperature is controlled to continuously react for 2-4 hours, the stirring is stopped, the nitrogen is stopped to be introduced, the reaction kettle is kept stand, the reaction phenomenon in the reaction kettle can be observed through the sight glass 17 during the reaction, the reaction temperature change is observed, when the reaction temperature suddenly rises, the constant-temperature heating is automatically turned off by the controller connected with the temperature sensor 7, the refrigerating switch 14 is turned on, the reaction temperature is continuously observed, and after the reaction temperature is stable, the refrigerating switch is turned off, and the standing reaction is continuously carried out. When the reaction time reaches, the temperature in the kettle is reduced to room temperature, and a phase inversion agent accounting for a certain proportion of the total mass of the emulsion is added to obtain the viscoelastic polymer emulsion. The stirring was stopped and the material was discharged from the discharge port 11.
The emulsion reaction kettle is used for preparing viscoelastic polymer emulsion, in particular to a nano viscoelastic polymer emulsion thickener for fracturing fluid. The high-speed stirring motor and the connected high-speed dispersing shaft are arranged, raw materials can be mixed and emulsified in a mixing kettle in the early stage of emulsion synthesis, and then a multi-stage initiating system is controllably added in a reaction kettle.
The reaction kettle has the characteristics of good stirring and mixing effects, uniform material reaction, easiness in controlling reaction temperature and the like.
In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed above.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The reaction kettle for preparing the viscoelastic polymer emulsion is characterized by comprising a mixing kettle (2), a reaction kettle main body (20) and a constant-temperature heating/refrigerating device (12), wherein the reaction kettle main body (20) is a sleeve, the sleeve is connected with a cold/heat medium inlet (18) and a cold/heat medium outlet (19) of the constant-temperature heating/refrigerating device (12) through pipelines, and the mixing kettle (2) is connected with the inner cavity of the reaction kettle main body (20) through pipelines;
The reaction kettle is characterized in that an initiator feeding pipe (6) and a nitrogen inlet (8) are arranged on the reaction kettle main body (20), a plurality of dispersing baffles (9) are uniformly distributed in the reaction kettle, sensors (21) are arranged on the dispersing baffles (9), porous spray heads (22) are uniformly distributed on the initiator feeding pipe (6) extending into the reaction kettle main body (20), check valves (23) are arranged at the inlet ends of the porous spray heads (22), and a temperature sensor (7) is further arranged in the reaction kettle main body (20).
2. The reaction kettle for preparing the viscoelastic polymer emulsion of claim 1, wherein a sight glass (17) is further arranged on the reaction kettle main body (20).
3. The reaction kettle for preparing the viscoelastic polymer emulsion according to claim 1 or 2 is characterized in that a mixing stirrer (1) is arranged in the mixing kettle (2), and stirring paddles (3) arranged on the mixing stirrer (1) are frame-type stirring paddles.
4. The reaction kettle for preparing the viscoelastic polymer emulsion of claim 3, wherein a raw material discharging valve (4) and a material injecting pump (5) are arranged on a pipeline connected with the reaction kettle body (20) of the mixing kettle (2).
5. The reaction kettle for preparing viscoelastic polymer emulsion of claim 4, wherein a discharging valve (11) is further arranged at the tail part of the reaction kettle main body (20).
6. The reaction kettle for preparing the viscoelastic polymer emulsion of claim 5, wherein the constant temperature heating/refrigerating device (12) is provided with a heating switch (13), a refrigerating switch (14), a temperature display (15) and a constant temperature heating/refrigerating device switch (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421491128.8U CN222724327U (en) | 2024-06-27 | 2024-06-27 | Reaction kettle for preparing viscoelastic polymer emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421491128.8U CN222724327U (en) | 2024-06-27 | 2024-06-27 | Reaction kettle for preparing viscoelastic polymer emulsion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222724327U true CN222724327U (en) | 2025-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421491128.8U Active CN222724327U (en) | 2024-06-27 | 2024-06-27 | Reaction kettle for preparing viscoelastic polymer emulsion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222724327U (en) |
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- 2024-06-27 CN CN202421491128.8U patent/CN222724327U/en active Active
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