CN218012767U - Self-cleaning horizontal reactor - Google Patents

Abstract

The invention belongs to the technical field of lithium battery additive production, and particularly relates to a self-cleaning horizontal reactor, which comprises: a kettle body, wherein a reaction chamber is arranged in the kettle body; the jacket is arranged on the outer wall of the kettle body; the stirring shaft is horizontally arranged in the reaction chamber of the kettle body; the power device is connected with one end of the stirring shaft, which extends out of the kettle body and the jacket, and provides power for the stirring shaft; the inner layer spiral stirring blade is positioned in the reaction chamber, is arranged on the stirring shaft along the length direction of the stirring shaft and is used for stirring the mixture in the reaction chamber; and the outer layer spiral stirring blade is positioned in the reaction chamber and is arranged on the stirring shaft along the length direction of the stirring shaft. By additionally arranging the outer-layer spiral stirring blades, salt viscous materials adhered to the inner wall of the kettle body can be quickly and cleanly cleaned, the heat transfer problems such as reduction of heat conductivity coefficient and the like caused by kettle adhesion are avoided, and the problem of reaction flash caused by reduction of effective space of the kettle body caused by caking in the kettle body is solved.

Description

Self-cleaning horizontal reactor

Technical Field

The utility model belongs to the technical field of lithium battery additive production, especially, relate to a all kinds of automatically cleaning horizontal reactor.

Background

Vinylene Carbonate (Vinylene Carbonate) is also called 1,3-dioxol-2-one, ethylene Carbonate, an organic matter, and has a chemical formula of C3H2O3, which has the property of being a colorless transparent liquid, is a novel organic film forming additive and an overcharge protection additive for lithium ion batteries, and can also be used as a monomer for preparing polyvinyl Carbonate.

In the existing synthesis method, a vertical enamel kettle or a stainless steel reaction kettle is mostly used, chlorinated ethylene carbonate CEC is used, and is mixed and reacted with an acid-binding agent triethylamine TEA, an antioxidant BHT and a solvent dimethyl carbonate DMC or acetonitrile at the temperature of below 80 ℃, wherein triethylamine is added into the mixture in a dropwise manner to participate in the reaction, and after the dropwise addition is completed, the temperature is maintained for a period of time to completely react, so that vinylene carbonate, triethylamine hydrochloride and polycarbonate substances are obtained. The triethylamine hydrochloride and the polycarbonate form a mixture with strong viscosity, and the mixture is attached to the inner wall of the reaction kettle, a baffle, an insertion tube in the kettle and the like, even agglomerated, and occupies effective space in the reaction kettle, so that adverse effects are brought to the reaction. For example: 1. leading to the deterioration of the heat transfer coefficient of the reaction kettle; 2. the dropwise added triethylamine acid-binding agent cannot be dispersed in the solution in the kettle quickly, so that the reaction local area is strong, the temperature is too high, the polycarbonate generated by side reaction is increased, and the yield of vinylene carbonate is reduced; 3. the material occupies the inner space of the reaction kettle, so that the effective volume is reduced, and material overflow in the kettle is caused in serious cases; 4. the polymerization kettle needs to be opened regularly to clean the caked salt materials in the kettle, so that the utilization efficiency of the reaction kettle is reduced, and the environmental protection risk problem caused by kettle cleaning is also increased.

Disclosure of Invention

An object of the utility model is to provide a reactor for among vinylene carbonate synthesis reaction system, this reactor has self-cleaning function, can effectually solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a self-cleaning horizontal reactor, comprising:

a kettle body, wherein a reaction chamber is arranged in the kettle body;

the jacket is arranged on the outer wall of the kettle body;

the stirring shaft is horizontally arranged in the reaction chamber of the kettle body;

the power device is connected with one end of the stirring shaft, which extends out of the kettle body and the jacket, and provides power for the stirring shaft;

the inner layer spiral stirring blade is positioned in the reaction chamber, is arranged on the stirring shaft along the length direction of the stirring shaft and is used for stirring the mixture in the reaction chamber;

and the outer layer spiral stirring blade is positioned in the reaction chamber, is arranged on the stirring shaft along the length direction of the stirring shaft, and cleans residual bonding materials on the inner wall of the kettle body while stirring the mixture in the reaction chamber.

In the above technical solution, further, the blades on the outer layer helical stirring blade and the blades on the inner layer helical stirring blade are distributed in a crossed manner.

In any of the above technical solutions, further, the distance between the outer layer helical stirring blade and the inner wall of the kettle body is 1cm-5cm.

In any of the above technical solutions, further, the stirring shaft includes:

the shaft I is of a hollow structure, and a first flow passage for water to pass through is formed in the inner cavity of the shaft I;

the second shaft is of a hollow structure and is fixedly sleeved on the first shaft, and a second flow passage for water to pass through is formed in the second shaft along the length direction of the second shaft;

the second shaft is provided with a water inlet communicated with the second flow channel, a third flow channel for water to pass through is arranged inside the inner-layer spiral stirring blade, one end of the third flow channel is communicated with the second flow channel, the other end of the third flow channel is communicated with the first flow channel on the first shaft, one side end of the first shaft is sealed, and the other side end of the first shaft forms a water outlet for water to be discharged.

In any of the above technical solutions, further, the third flow channel extends from the blade at one end of the inner layer helical stirring blade to the blade at the other end.

In any of the above technical solutions, further, a fourth flow channel for water to pass through is provided inside the outer layer helical stirring blade, one end of the fourth flow channel is communicated with the second flow channel, and the other end of the fourth flow channel is communicated with the first flow channel on the first shaft.

In any of the above technical solutions, further, the fourth flow channel extends from the blade at one end of the inner layer helical stirring blade to the blade at the other end.

In any of the above technical solutions, further, the sealing manner between the second shaft and the kettle body is a double-end mechanical seal.

The beneficial effects of the utility model are that:

1. the double-layer (inner and outer) spiral stirring blades are used, so that the mixed reactants in the kettle body are fully and uniformly stirred without dead angles.

2. The inner and outer layers of spiral stirring blades are arranged to be hollow, and heat or cooling circulating water is introduced, so that the heat exchange area of the kettle body is increased, the reaction heat energy is removed in time, and the local overhigh temperature is further avoided.

3. Through addding outer spiral stirring vane, can be quick will adhere to the salt that the internal wall of cauldron is viscous material clean up, avoid gluing the heat conductivity coefficient that the cauldron body caused and reduce the heat transfer problem such as to eliminate the cauldron body effective space reduction that the internal caking of cauldron brought, lead to the reaction flash problem.

Drawings

FIG. 1 is a block diagram of the flow connection of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the internal structure of the stirring shaft of the present invention;

the reference numbers in the figures are: 1. a first metering tank; 2. a second metering tank; 21. a main flow pipe; 22. a shunt tube; 3. a third metering tank; 4. a horizontal reactor; 41. a kettle body; 42. a jacket; 43. a stirring shaft; 431. a first shaft; 4311. a first flow passage; 4312. a water outlet; 432. a second shaft; 4321. a second flow passage; 4322. a water inlet; 44. a power device; 441. a motor; 442. a speed reducer; 45. an inner layer spiral stirring blade; 451. a third flow passage; 46. an outer layer helical stirring blade; 461. a fourth flow path; 5. a receiving tank.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

In the description of the present application, it is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. For convenience of description, the dimensions of the various features shown in the drawings are not necessarily drawn to scale. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It should be noted that in the description of the present application, the orientation or positional relationship indicated by the terms such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" and the like are generally based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and in the case of not making a reverse description, these orientation terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Example 1:

as shown in fig. 1 and fig. 2, this embodiment provides a vinylene carbonate synthesis reaction system, including:

a first metering tank 1 in which an antioxidant BHT is stored;

a second measuring tank 2 in which an acid-binding agent TEA is stored;

a third metering tank 3 in which a solvent is stored;

a horizontal reactor 4 for providing a reaction vessel for the synthesis of vinylene carbonate;

and a receiving tank 5 communicated with an output port of the horizontal reactor 4 for storing the reacted mixture;

wherein, horizontal reactor 4 includes:

the reaction chamber is communicated with the first metering tank 1, the second metering tank 2 and the third metering tank 3 through pipelines;

a jacket 42 disposed on the outer wall of the kettle body 41;

the stirring shaft 43 is horizontally arranged in the reaction chamber of the kettle body 41;

a power device 44 connected with one end of the stirring shaft 43 extending out of the kettle body 41 and the jacket 42 and providing power for the stirring shaft 43;

the inner-layer spiral stirring blade 45 is positioned in the reaction chamber, is arranged on the stirring shaft 43 along the length direction of the stirring shaft 43 and is used for stirring the mixture in the reaction chamber;

and an outer layer helical stirring blade 46 which is positioned in the reaction chamber and is arranged on the stirring shaft 43 along the length direction of the stirring shaft 43, and cleans the residual bonding material on the inner wall of the kettle body 41 while stirring the mixture in the reaction chamber.

In the technical scheme, for the synthesis reaction of the vinylene carbonate, triethylamine hydrochloride and polycarbonate substances can be obtained after the reaction, wherein the triethylamine hydrochloride and the polycarbonate can form a mixture with strong viscosity, and the mixture is attached to the inner wall of the kettle body 41, the baffle, the insertion tube in the kettle and other parts, and even is agglomerated. For this reason, outer helical mixing blade 46 has been add in the cauldron body 41, only have single helical mixing blade for traditional agitator, through set up inlayer helical mixing blade 45 and outer helical mixing blade 46 on (mixing) shaft 43, not only can improve the stirring efficiency of the reactant in the cauldron body 41, realize intensive mixing and the stirring at no dead angle, but also can give the clearance through outer helical mixing blade 46 with the bonding material on the cauldron body 41 inner wall and get off, realized self-cleaning effect.

In the present embodiment, it is optimized that the blades on the outer layer helical stirring blade 46 are distributed across the blades on the inner layer helical stirring blade 45.

In this technical scheme, set up through the blade cross distribution with on the outer helical mixing blade 46 and the blade on the inner helical mixing blade 45 to can realize even stirring the reactant in the cauldron body 41.

In the embodiment, the distance between the outer layer helical stirring blade 46 and the inner wall of the kettle body 41 is optimized to be 1cm-5cm.

In the technical scheme, in the actual operation process, the distance between the outer layer spiral stirring blade 46 and the inner wall of the kettle body 41 needs to be adjusted accurately, the too large distance can prevent bonded materials on the inner wall of the kettle body 41 from being cleaned easily, the too small distance can scratch the inner wall of the kettle body 41 easily, after continuous test, the distance between the two is controlled to be 1cm-5cm, and the specific control is most suitable when the distance is 2 cm.

Example 2:

the embodiment provides a vinylene carbonate synthesis reaction system, which comprises the technical scheme of the embodiment and also has the following technical characteristics.

As shown in fig. 2 and 3, in the present embodiment, the stirring shaft 43 includes:

the first shaft 431, the first shaft 431 is a hollow structure, and the inner cavity of the first shaft 431 forms a first flow channel 4311 for water to pass through;

the second shaft 432 is of a hollow structure, the second shaft 432 is fixedly sleeved on the first shaft 431, and a second flow channel 4321 for water to pass through is formed in the second shaft 432 along the length direction of the second shaft 432; the second shaft 432 and the kettle body 41 are sealed in a double-end mechanical sealing mode;

wherein, the second shaft 432 is provided with a water inlet 4322 communicated with the second flow channel 4321, the inner layer spiral stirring vane 45 is internally provided with a third flow channel 451 for water to pass through, one end of the third flow channel 451 is communicated with the second flow channel 4321, the other end is communicated with the first flow channel 4311 on the first shaft 431, one side end of the first shaft 431 is sealed, and the other side end forms a water outlet 4312 for water discharge.

In this technical scheme, some reactors of current adopt to heat or dispel the heat to reation kettle usually to the realization is to the control of the temperature in the reation kettle, and the problem that heat exchange efficiency is low has been existed to this mode. Therefore, in the present embodiment, the stirring shaft 43 and the stirring blade are improved, specifically, by providing two shafts, that is, the outer-layer shaft two 432 and the inner-layer shaft one 431, the first flow channel 4311 and the second flow channel 4321 are respectively arranged in the shaft one 431 and the shaft two 432, and the inner-layer helical stirring blade 45 and the outer-layer helical stirring blade 46 are respectively formed by sequentially connecting spiral semi-annular blades, so that the inner-layer helical stirring blade 45 and the outer-layer helical stirring blade 46 are in a thread shape, based on this, the third flow channel 451 is arranged in the blade of the inner-layer helical stirring blade 45, and both ends of the third flow channel 451 are respectively communicated with the first flow channel 4311 and the second flow channel 4321, so that the heat exchange of the reaction chamber in the kettle body 41 can be performed by conveying cold and hot water, the temperature of the reaction chamber can be increased or decreased, and the inner-layer helical stirring blade 45 can be continuously rotated under the action of the power device 44, so that the heat exchange of the reactant can be sufficiently performed, and the temperature of the reaction product can be efficiently controlled by changing the heat exchange mode, thereby.

As shown in fig. 2, in the present embodiment, preferably, the power device 44 mainly includes a motor 441 and a speed reducer 442, the motor 441 is connected to the speed reducer 442, an output shaft of the speed reducer 442 is provided with a driving wheel, the second shaft 432 is provided with a driven wheel, the driving wheel is connected to the driven wheel through a transmission belt, and under the action of the motor 441, the driving wheel and the driven wheel are driven to rotate, so as to drive the first shaft 431 to rotate.

In the present embodiment, it is preferable that the third flow channel 451 extends from the blade at one end to the blade at the other end of the inner helical stirring blade 45.

In the present technical solution, by adopting the above arrangement, that is, the third flow channel 451 is arranged along the length direction of the inner layer helical stirring blade 45, so that the third flow channel 451 also presents a helical shape, so as to increase the heat exchange area of the reactant, and to make the heat exchange efficiency of the reactant higher.

Example 3:

the embodiment provides a vinylene carbonate synthesis reaction system, which comprises the technical scheme of the embodiment and also has the following technical characteristics.

As shown in fig. 2 and 3, in the present embodiment, the outer layer helical mixing blade 46 has a fourth flow passage 461 for passing water, and one end of the fourth flow passage 461 is communicated with the second flow passage 4321, and the other end is communicated with the first flow passage 4311 on the first shaft 431. The fourth flow passage 461 extends from the blade at one end of the inner layer helical stirring blade 45 to the blade at the other end

In the present embodiment, the fourth flow channel 461 is disposed inside the outer layer helical stirring blade 46, so as to further increase the contact area between the heat exchange water and the reactant.

Example 4:

the embodiment provides a vinylene carbonate synthesis reaction system, which comprises the technical scheme of the embodiment and also has the following technical characteristics.

As shown in fig. 1 and fig. 2, in this embodiment, a main flow pipe 21 is provided at the discharge port of the second metering tank 2, a plurality of branch pipes 22 are connected to the main flow pipe 21, the branch pipes 22 are arranged side by side along the length direction of the kettle body 41, and the outlet ends thereof are communicated with the reaction chamber of the kettle body 41.

In this technical scheme, to the interpolation of binding acid agent TEA, local binding acid agent TEA concentration is too high in the reaction chamber that often can appear in the cauldron body 41, and then can cause this local temperature superelevation, for this reason, in this scheme, be provided with main flow tube 21 and each shunt tubes 22, through dispersing the interpolation to binding acid agent TEA to avoid appearing the condition that local temperature superelevation in the reaction chamber.

Example 5:

the present embodiment provides a vinylene carbonate synthesis method using the reaction system in the above embodiment, wherein the synthesis method specifically includes the following steps:

step one, opening discharge valves on a first metering tank 1 and a third metering tank 3, and adding antioxidant BHT and a solvent into a kettle body 41;

step two, starting the power device 44 to drive the stirring shaft 43 to rotate;

step three, hot water is introduced into the water inlet 4322 on the second shaft 432, wherein the flow path of the hot water flows from the second flow channel 4321 to the third flow channel 451, then flows from the third flow channel 451 to the first flow channel 4311, and finally is discharged from the water outlet 4312;

step four, after the temperature in the kettle body 41 rises to the reaction temperature, a valve on a discharge port of the second metering tank 2 is opened, the acid binding agent TEA flows to the shunt pipe 22 through the main flow pipe 21 and is uniformly and dispersedly added into the kettle body 41, and meanwhile, hot water introduced into the water inlet 4322 is switched into cold water, so that the temperature in the kettle body 41 is maintained at the reaction temperature;

and step five, after the reaction in the step four is finished, opening a discharge hole of the kettle body 41, and conveying the reaction mixture to a receiving tank 5.

While the embodiments of the present application have been described in connection with the drawings, the embodiments and features of the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present application and the claims.

Claims (8)

1. A self-cleaning horizontal reactor, comprising:

a kettle body (41) having a reaction chamber therein;

the jacket (42) is arranged on the outer wall of the kettle body (41);

the stirring shaft (43) is horizontally arranged in the reaction chamber of the kettle body (41);

the power device (44) is connected with one end of the stirring shaft (43) extending out of the kettle body (41) and one end of the jacket (42) and provides power for the stirring shaft (43);

the inner-layer spiral stirring blade (45) is positioned in the reaction chamber, is arranged on the stirring shaft (43) along the length direction of the stirring shaft (43), and is used for stirring the mixture in the reaction chamber;

and outer spiral stirring vane (46), be located in the reaction chamber to lay along the length direction of (mixing) shaft (43) on (mixing) shaft (43), clear up when stirring the mixture in the reaction chamber remaining bonding material on the cauldron body (41) inner wall.

2. A self-cleaning horizontal reactor as claimed in claim 1, wherein the blades on the outer helical stirring blades (46) are distributed across the blades on the inner helical stirring blades (45).

3. The self-cleaning horizontal reactor as claimed in claim 1, wherein the distance between the outer layer helical stirring blade (46) and the inner wall of the kettle body (41) is 1cm-5cm.

4. A self-cleaning horizontal reactor according to claim 1, wherein the stirring shaft (43) comprises:

a first shaft (431), wherein the first shaft (431) is of a hollow structure, and an inner cavity of the first shaft forms a first flow passage (4311) for water to pass through;

the second shaft (432) is of a hollow structure and is fixedly sleeved on the first shaft (431), and a second flow channel (4321) which is formed in the second shaft (432) along the length direction of the second shaft and used for water to pass through is formed in the second shaft (432);

a water inlet (4322) communicated with the second flow channel (4321) is formed in the second shaft (432), a third flow channel (451) used for water to pass through is formed in the inner layer spiral stirring blade (45), one end of the third flow channel (451) is communicated with the second flow channel (4321), the other end of the third flow channel is communicated with the first flow channel (4311) on the first shaft (431), one side end of the first shaft (431) is sealed, and a water outlet (4312) used for water discharge is formed in the other side end of the first shaft (431).

5. A self-cleaning horizontal reactor as claimed in claim 4, wherein the third flow channel (451) extends from the blade at one end to the blade at the other end of the inner helical stirring blade (45).

6. The self-cleaning horizontal reactor as claimed in claim 4, wherein the inner part of the outer helical stirring blade (46) has a fourth flow channel (461) for passing water, and one end of the fourth flow channel (461) is communicated with the second flow channel (4321) and the other end is communicated with the first flow channel (4311) of the first shaft (431).

7. A self-cleaning horizontal reactor as claimed in claim 6, wherein the fourth flow channel (461) extends from the blade at one end to the blade at the other end of the inner helical stirring blade (45).

8. The self-cleaning horizontal reactor as claimed in claim 4, wherein the sealing between the second shaft (432) and the kettle body (41) is a double mechanical seal.

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