CN219334177U - Polymerization reaction device - Google Patents

Abstract

The present utility model provides a polymerization reaction apparatus comprising: the reaction kettle is provided with an auxiliary agent feeding port, a first air inlet and a first air outlet; a propylene storage tank for storing liquid propylene; an alpha-olefin storage tank for storing liquid alpha-olefins; the propylene storage tank and the alpha-olefin storage tank are respectively communicated with the material inlet of the gas mixing mechanism so as to respectively introduce propylene and alpha-olefin into the gas mixing mechanism, and the gas mixing mechanism can heat the materials so as to mix and gasify the materials, and the second air outlet of the gas mixing mechanism is communicated with the first air inlet of the reaction kettle. Through the technical scheme provided by the application, the problem of poor product uniformity caused by different polymerization rates of the comonomer from the initial reaction stage to the final reaction stage in the prior art can be solved by adding the liquid comonomer into the reaction kettle at one time.

Description

Polymerization reaction device

Technical Field

The utility model relates to the technical field of production equipment, in particular to a polymerization reaction device.

Background

The random copolymer polypropylene is a high-performance polypropylene product type with faster market demand growth at present, and is mainly applied to the fields of heat sealing layers, foaming polypropylene beads, special polypropylene fibers and the like in the packaging field.

In the prior art, a liquid comonomer is generally added into a reaction kettle at one time, and the uniformity of product performance is poor due to the fact that the comonomer polymerization rate is different from the initial stage to the final stage of the reaction, and the composition of raw materials is greatly changed.

Disclosure of Invention

The utility model provides a polymerization reaction device, which solves the problem of poor uniformity of products caused by different polymerization rates of comonomer in the initial reaction stage and the final reaction stage of the prior art because of the fact that the liquid comonomer is added into a reaction kettle at one time.

The present utility model provides a polymerization reaction apparatus comprising: the reaction kettle is provided with an auxiliary agent feeding port, a first air inlet and a first air outlet; a propylene storage tank for storing liquid propylene; an alpha-olefin storage tank for storing liquid alpha-olefins; the propylene storage tank and the alpha-olefin storage tank are respectively communicated with the material inlet of the gas mixing mechanism so as to respectively introduce liquid propylene and liquid alpha-olefin into the gas mixing mechanism, and the gas mixing mechanism can heat the materials so as to mix and gasify the materials, and the second air outlet of the gas mixing mechanism is communicated with the first air inlet of the reaction kettle.

Further, the polymerization reaction apparatus further comprises: and the ethylene storage tank is used for storing gaseous ethylene and is communicated with a material inlet of the gas mixing mechanism.

Further, the propylene storage tank is directly communicated with an auxiliary agent feeding port of the reaction kettle so as to introduce liquid propylene into the reaction kettle; the ethylene storage tank is directly communicated with the first air inlet of the reaction kettle so as to introduce gaseous ethylene into the reaction kettle.

Further, the polymerization reaction apparatus further comprises: the device comprises a first communication pipe and a first flow adjusting part, wherein one end of the first communication pipe is communicated with a propylene storage tank, the other end of the first communication pipe is communicated with a material inlet of a gas mixing mechanism, and the first flow adjusting part is arranged on the first communication pipe to adjust the flow of propylene in the first communication pipe.

Further, the polymerization reaction apparatus further comprises: the system comprises a first branch pipe, a first valve, a second valve and a propylene evaporator, wherein one end of the first branch pipe is communicated with a first communication pipe, the first branch pipe is positioned at the downstream of a first flow adjusting part, the other end of the first branch pipe is communicated with a first air inlet of a reaction kettle, the first valve is arranged on the first branch pipe, and the second valve is arranged on the first communication pipe and positioned at the downstream of the connection position of the first branch pipe and the first communication pipe; the propylene evaporator is arranged on the first communication pipe and is positioned between the first valve and the second valve, and the propylene evaporator is used for evaporating ethylene so that the ethylene enters the reaction kettle in a gaseous form through the first air inlet.

Further, the polymerization reaction apparatus further comprises: the second communicating pipe and second flow regulating part, the one end and the ethylene storage tank intercommunication of second communicating pipe, the other end and the material import intercommunication of gas mixing mechanism of second communicating pipe, second flow regulating part sets up on the second communicating pipe in order to adjust the flow of ethylene in the second communicating pipe.

Further, the polymerization reaction apparatus further comprises: the second branch pipe, third valve and fourth valve, the one end and the second communicating pipe intercommunication of second branch pipe and, and the second branch pipe is located the low reaches of second flow adjustment portion, and the other end and the first air inlet intercommunication of reation kettle of second branch pipe, third valve setting are on the second branch pipe, and the fourth valve setting is on the second communicating pipe, and is located the low reaches of second branch pipe and second communicating pipe hookup location.

Further, the polymerization reaction apparatus further comprises: the third communicating pipe and the third flow adjusting part, one end of the third communicating pipe is communicated with the alpha-olefin storage tank, the other end of the third communicating pipe is communicated with the material inlet of the gas mixing mechanism, and the third flow adjusting part is arranged on the third communicating pipe so as to adjust the flow of the alpha-olefin in the third communicating pipe.

Further, the polymerization reaction apparatus further comprises: the fourth communicating pipe and the fourth flow regulating part, the one end of fourth communicating pipe communicates with the second gas outlet of the gas mixing mechanism, the other end of fourth communicating pipe communicates with the first air inlet of the reaction kettle, and the fourth flow regulating part is arranged on the fourth communicating pipe to regulate the flow of the material in the fourth communicating pipe.

Further, the polymerization reaction apparatus further comprises: and an auxiliary agent feeding pipe, wherein an auxiliary agent is added into one end of the auxiliary agent feeding pipe and the auxiliary agent feeding port, and the auxiliary agent in the propylene storage tank and the auxiliary agent feeding pipe far away from the auxiliary agent feeding port is pressed into the reaction kettle.

Further, the gas mixing mechanism includes: the material inlet and the second air outlet are both arranged on the gas mixing tank; a heating unit for heating the gas mixing tank; and the temperature sensing part is electrically connected with the heating part and is used for detecting the temperature inside the gas mixing tank and transmitting the detected temperature information to the heating part so as to adjust the heating temperature of the heating part.

By applying the technical scheme of the utility model, the gas mixing mechanism can gasify and mix the liquid propylene and the liquid alpha-olefin, so that the propylene and the alpha-olefin continuously enter the reaction kettle in a gaseous form to participate in the reaction, and the problem of poor product performance uniformity caused by the fact that the liquid propylene and the liquid alpha-olefin are added into the reaction kettle at one time is avoided. The gas mixing mechanism can heat the comonomer mixture in the normal temperature phase state to the temperature designed by the polymerization reaction experiment, and generally to 50-100 ℃; after the temperature of the gas mixing mechanism reaches the set temperature, the comonomer mixture stays in the gas mixing mechanism for 0.5-3h, so that sufficient time ensures that the comonomer can effectively carry out molecular diffusion, and the comonomer is fully and uniformly mixed, thereby realizing the refining control of the feeding proportion of the comonomer, simultaneously ensuring the stability of process control in the polymerization process due to the consistency of the temperature of the comonomer conveyed to the reaction kettle and the polymerization reaction temperature, and being beneficial to the development of binary or multi-element gas-phase copolymerization products. When the polymerization reaction is carried out, a seedbed or a fluidized bed is required to be added in the reaction kettle, and in the traditional technical scheme, liquid propylene and liquid alpha-olefin are directly introduced into the reaction kettle at one time for the polymerization reaction, and the polymerization reaction is carried out from the initial stage to the final stage of the reaction, and the polymerization rate of the comonomer is different, so that the composition change of raw materials is relatively large, and the product performance is nonuniform. Compared with the traditional technical scheme, the gaseous propylene and the gaseous alpha-olefin are mixed and then enter the reaction kettle, the gaseous comonomers are completely mutually dissolved, the operation of air inlet and air exhaust is implemented in the reaction process, the copolymerization of the comonomers in a set proportion in the polymerization process is ensured, the mixing uniformity of all materials in the reaction kettle is ensured, and the uniformity of the performance of a copolymerization product is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

fig. 1 shows a schematic structural diagram of a polymerization reaction apparatus according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a reaction kettle; 101. an auxiliary agent feed inlet; 102. a first air inlet; 103. a first air outlet;

20. a propylene storage tank;

21. a first communication pipe; 22. a first flow rate adjustment unit; 23. a first branch pipe; 24. a first valve; 25. a second valve;

30. an alpha-olefin storage tank;

31. a third communicating pipe; 32. a third flow rate adjustment unit;

40. a gas mixing mechanism; 401. a material inlet; 402. a second air outlet;

41. a fourth communicating pipe; 411. a fifth valve; 42. a fourth flow rate adjustment unit;

43. a gas mixing tank; 44. a heating section; 45. a temperature sensing unit;

50. an ethylene storage tank;

51. a second communicating pipe; 52. a second flow rate adjustment unit; 53. a second branch pipe; 54. a third valve; 55. a fourth valve;

60. an auxiliary agent feeding pipe;

70. a nitrogen storage tank;

80. and a hydrogen storage tank.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, an embodiment of the present utility model provides a polymerization reaction apparatus including a reaction vessel 10, a propylene tank 20, an α -olefin tank 30, and a gas mixing mechanism 40. Wherein, reation kettle 10 has auxiliary agent feed inlet 101, first air inlet 102 and first gas outlet 103 to, reation kettle 10's bottom is provided with the discharging pipe, is provided with stirring subassembly in the reation kettle 10. The propylene storage tank 20 is used for storing liquid propylene. The alpha-olefin storage tank 30 is used to store liquid alpha-olefins. The gas mixing mechanism 40 is provided with a material inlet 401 and a second air outlet 402, the propylene storage tank 20 and the alpha-olefin storage tank 30 are respectively communicated with the material inlet 401 of the gas mixing mechanism 40 to respectively introduce liquid propylene and liquid alpha-olefin into the gas mixing mechanism 40, the gas mixing mechanism 40 can heat the material so as to mix and gasify the material, and the second air outlet 402 of the gas mixing mechanism 40 is communicated with the first air inlet 102 of the reaction kettle 10. The first air outlet 103 is used for being connected with an emptying and vacuumizing system so as to discharge residual gas-phase components in the reaction kettle 10 and vacuumize the reaction kettle 10.

By applying the technical scheme of the utility model, the gas mixing mechanism 40 can gasify and mix the liquid propylene and the liquid alpha-olefin, so that the propylene and the alpha-olefin continuously enter the reaction kettle 10 in a gaseous form to participate in the reaction, and the problem of poor product performance uniformity caused by the fact that the liquid propylene and the liquid alpha-olefin are added into the reaction kettle 10 at one time is avoided. The gas mixing mechanism 40 can heat the comonomer mixture in the normal temperature phase state to the temperature designed by the polymerization reaction experiment, and generally to 50-100 ℃; after the temperature of the gas mixing mechanism 40 reaches the set temperature, the comonomer mixture stays in the gas mixing mechanism for 0.5-3h, so that sufficient time ensures that the comonomer can effectively carry out molecular diffusion, and the comonomer is fully and uniformly mixed, thereby realizing the refining control of the feeding proportion of the comonomer, simultaneously ensuring the process control stability of the polymerization reaction process due to the consistency of the temperature of the comonomer conveyed to the reaction kettle and the polymerization reaction temperature, and being beneficial to the development of binary or multi-element gas phase copolymerization products. When the polymerization reaction is carried out, a seedbed or a fluidized bed is required to be added in the reaction kettle, and in the traditional technical scheme, liquid propylene and liquid alpha-olefin are directly introduced into the reaction kettle at one time for the polymerization reaction, and the polymerization reaction is carried out from the initial stage to the final stage of the reaction, and the polymerization rate of the comonomer is different, so that the composition change of raw materials is relatively large, and the product performance is nonuniform. Compared with the traditional technical scheme, the gaseous propylene and the gaseous alpha-olefin are mixed and then enter the reaction kettle, the gaseous comonomers are completely mutually dissolved, the operation of air inlet and air exhaust is implemented in the reaction process, the copolymerization of the comonomers in a set proportion in the polymerization process is ensured, the mixing uniformity of all materials in the reaction kettle is ensured, and the uniformity of the performance of a copolymerization product is ensured.

Further, the polymerization reaction apparatus further comprises an ethylene storage tank 50, the ethylene storage tank 50 is used for storing gaseous ethylene, and the ethylene storage tank 50 is communicated with a material inlet 401 of the gas mixing mechanism 40. By the arrangement, the device of the scheme can carry out polymerization reaction of propylene-alpha-olefin and polymerization reaction of ethylene-propylene-alpha-olefin, and improves adaptability of the device.

Further, the propylene storage tank 20 is directly communicated with an auxiliary agent feeding port 101 of the reaction kettle 10 so as to introduce liquid propylene into the reaction kettle 10; the ethylene storage tank 50 is in direct communication with the first gas inlet 102 of the reactor 10 to introduce gaseous ethylene into the reactor 10. By the arrangement, the device can also carry out homopolymerization, namely propylene is taken as the only polymerization monomer, and particularly, when in reaction, the propylene storage tank 20 is directly communicated with the auxiliary agent feed inlet 101 of the reaction kettle 10; or binary copolymerization reaction with propylene and ethylene as comonomers is carried out, and particularly, during the reaction, the propylene storage tank 20 and the ethylene storage tank 50 are respectively communicated with the first air inlet 102 of the reaction kettle 10; or carrying out a ternary polymerization reaction by taking propylene, ethylene and alpha-olefin as comonomers, specifically, during the reaction, the propylene storage tank 20, the ethylene storage tank 50 and the alpha-olefin storage tank 30 are respectively communicated with the material inlet 401 of the gas mixing mechanism 40, so that the gas mixing mechanism 40 gasifies the propylene and the alpha-olefin, and ethylene and gasified propylene are mixed, and the second air outlet 402 of the gas mixing mechanism 40 is communicated with the reaction kettle 10 to carry out the ternary polymerization reaction. So set up, can further promote the adaptability of this device for this device can carry out multiple polymerization.

Further, the polymerization reaction apparatus further comprises a first communication pipe 21 and a first flow rate adjusting part 22, wherein one end of the first communication pipe 21 is communicated with the propylene storage tank 20, the other end of the first communication pipe 21 is communicated with the material inlet 401 of the gas mixing mechanism 40, and the first flow rate adjusting part 22 is arranged on the first communication pipe 21 to adjust the flow rate of propylene in the first communication pipe 21. By the arrangement, the propylene storage tank 20 and the material inlet 401 of the gas mixing mechanism 40 can be communicated, flow can be regulated, and reaction accuracy is guaranteed. In this embodiment, the first flow rate adjusting portion 22 is a first flow rate adjuster.

Further, the polymerization reaction device further comprises a first branch pipe 23, a first valve 24, a second valve 25 and a propylene evaporator, wherein one end of the first branch pipe 23 is communicated with the first communication pipe 21, the first branch pipe 23 is positioned at the downstream of the first flow regulating part 22, the other end of the first branch pipe 23 is communicated with the first air inlet 102 of the reaction kettle 10, the first valve 24 is arranged on the first branch pipe 23, and the second valve 25 is arranged on the first communication pipe 21 and positioned at the downstream of the connection position of the first branch pipe 23 and the first communication pipe 21; a propylene evaporator is provided on the first communication pipe 21 between the first valve 24 and the second valve 25 for evaporating ethylene so that ethylene enters the reaction kettle 10 in a gaseous form through the first gas inlet 102. By such arrangement, the propylene storage tank 20 can be ensured to be selectively communicated with any one of the gas mixing mechanism 40 and the reaction kettle 10, and the first flow adjusting part 22 can be used for adjusting the flow of propylene which is introduced into the gas mixing mechanism 40 and the reaction kettle 10, so that the accuracy of the reaction is ensured. Specifically, when propylene is required to be introduced into the gas mixing mechanism 40, the first valve 24 is closed, and the second valve 25 and the propylene evaporator are opened; when propylene is required to be introduced into the reaction kettle 10, the second valve 25 and the propylene evaporator are closed, and the first valve 24 is opened.

Further, the polymerization reaction apparatus further comprises a second communicating pipe 51 and a second flow rate adjusting part 52, one end of the second communicating pipe 51 is communicated with the ethylene storage tank 50, the other end of the second communicating pipe 51 is communicated with the material inlet 401 of the gas mixing mechanism 40, and the second flow rate adjusting part 52 is provided on the second communicating pipe 51 to adjust the flow rate of ethylene in the second communicating pipe 51. By means of the arrangement, communication between the ethylene storage tank 50 and the material inlet 401 of the gas mixing mechanism 40 can be achieved, flow adjustment can be achieved, and reaction accuracy is guaranteed. In the present embodiment, the second flow rate adjusting unit 52 is a second flow rate adjuster.

Further, the polymerization reaction apparatus further comprises a second branch pipe 53, a third valve 54 and a fourth valve 55, wherein one end of the second branch pipe 53 is communicated with the second communicating pipe 51, the second branch pipe 53 is positioned downstream of the second flow regulating portion 52, the other end of the second branch pipe 53 is communicated with the first gas inlet 102 of the reaction vessel 10, the third valve 54 is provided on the second branch pipe 53, and the fourth valve 55 is provided on the second communicating pipe 51 downstream of the position where the second branch pipe 53 is connected with the second communicating pipe 51. By such arrangement, the ethylene storage tank 50 can be ensured to be selectively communicated with the reaction kettle 10 or the material inlet 401 of the gas mixing mechanism 40, and the second flow adjusting part 52 can be used for adjusting the flow of ethylene which is introduced into the reaction kettle 10 and the gas mixing mechanism 40, so that the reaction accuracy is ensured. Specifically, when ethylene is required to be introduced into the gas mixing mechanism 40, the third valve 54 is closed, and the fourth valve 55 is opened; when ethylene is required to be introduced into the reaction kettle 10, the fourth valve 55 is closed, and the third valve 54 is opened.

Further, the polymerization reaction apparatus further comprises a third communicating pipe 31 and a third flow rate adjusting part 32, one end of the third communicating pipe 31 is communicated with the α -olefin storage tank 30, the other end of the third communicating pipe 31 is communicated with the material inlet 401 of the gas mixing mechanism 40, and the third flow rate adjusting part 32 is disposed on the third communicating pipe 31 to adjust the flow rate of α -olefin in the third communicating pipe 31. By this arrangement, the accuracy of the flow rate of the α -olefin into the gas mixing mechanism 40 can be ensured, and the reaction accuracy can be ensured. In the present embodiment, the third flow rate adjustment unit 32 is a third flow rate adjustment meter.

Further, the polymerization reaction apparatus further comprises a fourth communicating pipe 41, a fourth flow adjusting part 42 and a fifth valve 411, wherein one end of the fourth communicating pipe 41 is communicated with the second air outlet 402 of the gas mixing mechanism 40, the other end of the fourth communicating pipe 41 is communicated with the first air inlet 102 of the reaction kettle 10, the fourth flow adjusting part 42 is arranged on the fourth communicating pipe 41 to adjust the flow of the materials in the fourth communicating pipe 41, and the fifth valve 411 is arranged on the fourth communicating pipe 41 to enable the gas mixing mechanism 40 to be communicated with or disconnected from the reaction kettle 10. By such arrangement, the accuracy of the mixed material in the gas mixing mechanism 40 to be introduced into the reaction kettle 10 can be ensured, and the reaction accuracy can be ensured.

Further, the polymerization reaction device further comprises an auxiliary feeding pipe 60, one end of the auxiliary feeding pipe 60 is communicated with the auxiliary feeding port 101 to add an auxiliary into the reaction kettle 10, and the propylene storage tank 20 is communicated with one end of the auxiliary feeding pipe 60 away from the auxiliary feeding port 101 to press the auxiliary in the auxiliary feeding pipe 60 into the reaction kettle 10. So set up, can guarantee to impress into reation kettle 10 through propylene with the auxiliary agent, avoid causing the waste of auxiliary agent, guarantee the quality precision that the auxiliary agent lets in, guarantee the accuracy nature of reaction result. In addition, the propylene presses the auxiliary agent into the reaction vessel 10, so that no new impurity is introduced, and the reaction can be ensured to proceed smoothly.

Further, the gas mixing mechanism 40 includes a gas mixing tank 43, a heating portion 44, and a temperature sensing portion 45. Wherein, material inlet 401 and second gas outlet 402 are all set up on mixing gas jar 43. And a heating unit 44 for heating the gas mixing tank 43. The temperature sensing part 45 is electrically connected to the heating part 44, and the temperature sensing part 45 is configured to detect the temperature inside the gas mixing tank 43 and transmit the detected temperature information to the heating part 44 to adjust the heating temperature of the heating part 44. In this embodiment, the air mixing tank 43 is a sandwich structure, a heat conducting medium is disposed in the sandwich structure, the heating portion 44 is a circulation heating water tank, and the circulation heating water tank is communicated with the sandwich structure of the air mixing tank 43, so that the heat conducting medium in the sandwich structure is continuously circulated, and the temperature sensing portion 45 is a temperature sensor. By such arrangement, the heating effect of the gas mixing mechanism 40 is more controllable, and the accuracy of the reaction temperature adjustment can be ensured.

The polymerization reaction apparatus further includes a hydrogen storage tank 80, and the hydrogen storage tank 80 is directly connected to the first gas inlet 102 of the reaction vessel 10 to introduce hydrogen into the reaction vessel 10. In this embodiment, the polymerization reaction apparatus further includes a nitrogen storage tank 70, where the nitrogen storage tank 70 is respectively connected to the auxiliary agent feed inlet 101 of the reaction kettle 10 and the material inlet 401 of the gas mixing mechanism 40, so as to clean the reaction kettle 10 and the gas mixing mechanism 40.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (11)

1. A polymerization reaction apparatus, characterized in that the polymerization reaction apparatus comprises:

the reaction kettle (10) is provided with an auxiliary agent feeding port (101), a first air inlet (102) and a first air outlet (103);

a propylene storage tank (20) for storing liquid propylene;

an alpha-olefin storage tank (30) for storing liquid alpha-olefins;

the gas mixing mechanism (40) is provided with a material inlet (401) and a second air outlet (402), the propylene storage tank (20) and the alpha-olefin storage tank (30) are respectively communicated with the material inlet (401) of the gas mixing mechanism (40) so as to respectively introduce liquid propylene and liquid alpha-olefin into the gas mixing mechanism (40), the gas mixing mechanism (40) can heat the material so as to mix and gasify the material, and the second air outlet (402) of the gas mixing mechanism (40) is communicated with the first air inlet (102) of the reaction kettle (10).

2. The polymerization reaction apparatus of claim 1, wherein the polymerization reaction apparatus further comprises:

and the ethylene storage tank (50) is used for storing gaseous ethylene, and the ethylene storage tank (50) is communicated with the material inlet (401) of the gas mixing mechanism (40).

3. The polymerization apparatus according to claim 2, wherein,

the propylene storage tank (20) is directly communicated with the auxiliary agent feeding port (101) of the reaction kettle (10) so as to introduce liquid propylene into the reaction kettle (10);

the ethylene storage tank (50) is directly communicated with a first air inlet (102) of the reaction kettle (10) so as to introduce gaseous ethylene into the reaction kettle (10).

4. The polymerization apparatus of claim 3, wherein the polymerization apparatus further comprises:

the propylene storage device comprises a first communication pipe (21) and a first flow adjusting part (22), wherein one end of the first communication pipe (21) is communicated with a propylene storage tank (20), the other end of the first communication pipe (21) is communicated with a material inlet (401) of a gas mixing mechanism (40), and the first flow adjusting part (22) is arranged on the first communication pipe (21) to adjust the flow of propylene in the first communication pipe (21).

5. The polymerization reaction apparatus of claim 4, wherein the polymerization reaction apparatus further comprises:

a first branch pipe (23), a first valve (24), a second valve (25) and a propylene evaporator, wherein one end of the first branch pipe (23) is communicated with the first communication pipe (21), the first branch pipe (23) is positioned at the downstream of the first flow regulating part (22), the other end of the first branch pipe (23) is communicated with a first air inlet (102) of the reaction kettle (10), the first valve (24) is arranged on the first branch pipe (23), and the second valve (25) is arranged on the first communication pipe (21) and positioned at the downstream of the connection position of the first branch pipe (23) and the first communication pipe (21); the propylene evaporator is arranged on the first communication pipe (21) and is positioned between the first valve (24) and the second valve (25), and is used for evaporating ethylene so that the ethylene enters the reaction kettle (10) in a gaseous form through the first air inlet (102).

6. The polymerization apparatus of claim 3, wherein the polymerization apparatus further comprises:

the device comprises a second communicating pipe (51) and a second flow regulating part (52), wherein one end of the second communicating pipe (51) is communicated with the ethylene storage tank (50), the other end of the second communicating pipe (51) is communicated with a material inlet (401) of the gas mixing mechanism (40), and the second flow regulating part (52) is arranged on the second communicating pipe (51) to regulate the flow of ethylene in the second communicating pipe (51).

7. The polymerization reaction apparatus of claim 6, wherein the polymerization reaction apparatus further comprises:

the device comprises a second branch pipe (53), a third valve (54) and a fourth valve (55), wherein one end of the second branch pipe (53) is communicated with the second communicating pipe (51), the second branch pipe (53) is positioned at the downstream of the second flow adjusting part (52), the other end of the second branch pipe (53) is communicated with a first air inlet (102) of the reaction kettle (10), the third valve (54) is arranged on the second branch pipe (53), and the fourth valve (55) is arranged on the second communicating pipe (51) and positioned at the downstream of the connecting position of the second branch pipe (53) and the second communicating pipe (51).

8. The polymerization reaction apparatus of claim 1, wherein the polymerization reaction apparatus further comprises:

the device comprises a third communicating pipe (31) and a third flow regulating part (32), wherein one end of the third communicating pipe (31) is communicated with an alpha-olefin storage tank (30), the other end of the third communicating pipe (31) is communicated with a material inlet (401) of a gas mixing mechanism (40), and the third flow regulating part (32) is arranged on the third communicating pipe (31) to regulate the flow of alpha-olefin in the third communicating pipe (31).

9. The polymerization reaction apparatus of claim 1, wherein the polymerization reaction apparatus further comprises:

the device comprises a fourth communicating pipe (41) and a fourth flow regulating part (42), wherein one end of the fourth communicating pipe (41) is communicated with a second air outlet (402) of the air mixing mechanism (40), the other end of the fourth communicating pipe (41) is communicated with a first air inlet (102) of the reaction kettle (10), and the fourth flow regulating part (42) is arranged on the fourth communicating pipe (41) so as to regulate the flow of materials in the fourth communicating pipe (41).

10. The polymerization reaction apparatus of claim 1, wherein the polymerization reaction apparatus further comprises:

and one end of the auxiliary feeding pipe (60) is communicated with the auxiliary feeding port (101) so as to add an auxiliary into the reaction kettle (10), and one end of the propylene storage tank (20) which is far away from the auxiliary feeding port (101) of the auxiliary feeding pipe (60) is communicated with the auxiliary feeding pipe (60) so as to press the auxiliary in the auxiliary feeding pipe (60) into the reaction kettle (10).

11. The polymerization apparatus according to claim 1, wherein the gas mixing mechanism (40) comprises:

the material inlet (401) and the second air outlet (402) are both arranged on the gas mixing tank (43);

a heating unit (44) for heating the gas mixing tank (43);

and a temperature sensing part (45) electrically connected with the heating part (44), wherein the temperature sensing part (45) is used for detecting the temperature inside the gas mixing tank (43) and transmitting the detected temperature information to the heating part (44) so as to adjust the heating temperature of the heating part (44).

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