Plug-in polymer solution heat exchange degassing device

Abstract

The utility model provides a plug-in polymer solution heat exchange degassing device. The plug-in polymer solution heat exchange degassing device comprises a tube type heat exchanger, wherein a plurality of heat exchange tubes are arranged in the tube type heat exchanger; an insertion opening is formed in the top end of the gas-liquid separation tank; the bottom structure of the tubular heat exchanger is inserted into the inner cavity of the gas-liquid separation tank through the insertion opening; bottom end outlets of the multiple heat exchange pipes extend to an inner cavity of the gas-liquid separation tank and are vertically arranged at intervals with the lower end face of the insertion opening. In the utility model, a part of length of the shell-and-tube heat exchanger is inserted into the gas-liquid separation tank, so that falling strips at the outlets of the heat exchange tubes at the edge of the shell-and-tube heat exchanger can be prevented from being adhered to the periphery of the neck of the flange of the gas-liquid separation tank due to extrusion expansion and rope winding effect to cause the blockage of a flow channel and damage to the integrity of the falling strips; polymer solution fallen strips do not stay and adhere to the flange for a long time to cause yellowing and degradation, the content of volatile substances in the polymer solution is reduced, and the quality of a final polymer solution product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange and degassing of polymer solutions, in particular to an insert-type heat exchange and degassing device for polymer solutions. Background Art

[0002] During the production and processing of polymers, some volatile substances in the polymer solution will remain in the product. These residual volatile substances not only affect the performance and quality of the final product, but also bring environmental pollution and safety and health risks. For this reason, it is necessary to set up a degassing and devolatilization device for separating volatile substances in the polymer solution. The existing degassing and devolatilization device includes a heat exchanger and a gas-liquid separation tank. After the polymer solution is heated by the heat exchanger, it enters the gas-liquid separation tank to separate the volatile substances.

[0003] However, the heat exchanger of the existing degassing and devolatilization device is fixedly installed on the flange of the gas-liquid separation tank through the lower flange, and the lower flange of the heat exchanger is set at the bottom of the heat exchanger. After the polymer solution leaves the bottom of the heat exchanger to form a strip, it is easy to adhere to the neck of the flange of the gas-liquid separation tank due to the airflow at the gas phase outlet, the rope effect and the extrusion expansion effect, which can easily cause congestion of the flow channel and destroy the integrity of the strip. The material adhered to the flange of the gas-liquid separation tank will easily yellow and degrade if it stays on the flange for a long time, affecting the quality of the final product.

[0004] In addition, the heat exchange tubes of the existing degassing and devolatilization device are shell-and-tube heat exchangers, which include multiple heat exchange tubes. Due to the economic impact of the shell-and-tube heat exchanger that transports high-viscosity polymer solutions, the multiple heat exchange tubes of the shell-and-tube heat exchanger should not be made very thin, otherwise the pressure drop will be very high, and the polymer solution falls directly into the gas-liquid separation tank from the heat exchange tube outlet of the heat exchanger. The diameter of the falling strip is constrained by the inner diameter of the heat exchange tube, which will cause the diameter of the falling strip to be very thick, and the specific surface area of ​​gas-liquid mass transfer is limited, and the degassing efficiency is low. Utility Model Content

[0005] The utility model provides an inserted polymer solution heat exchange degassing device to improve the degassing efficiency.

[0006] According to a first aspect of the present invention, an insertable polymer solution heat exchange degassing device is provided. The insertable polymer solution heat exchange degassing device comprises:

[0007] A shell-and-tube heat exchanger having a plurality of heat exchange tubes arranged inside the shell-and-tube heat exchanger; and

[0008] A gas-liquid separation tank, wherein a socket is provided at the top of the gas-liquid separation tank;

[0009] The bottom structure of the shell-and-tube heat exchanger is inserted into the inner cavity of the gas-liquid separation tank through the socket;

[0010] The bottom outlets of the plurality of heat exchange tubes extend to the inner cavity of the gas-liquid separation tank and are vertically spaced from the lower end surface of the socket.

[0011] Optionally, a first flange is protrudingly provided on the outer peripheral wall of the shell-and-tube heat exchanger;

[0012] The first flange is located between the top end and the bottom end of the shell-and-tube heat exchanger;

[0013] The top of the gas-liquid separation tank is provided with a separation tank flange;

[0014] The socket is arranged through the flange of the separation tank;

[0015] The first flange is fixedly connected to the separation tank flange.

[0016] Optionally, the plurality of heat exchange tubes extend from the top of the shell-and-tube heat exchanger to the bottom wall of the shell-and-tube heat exchanger;

[0017] The bottom wall of the shell-and-tube heat exchanger is provided with a plurality of bottom wall through holes;

[0018] The bottom end outlets of the plurality of heat exchange tubes respectively penetrate the plurality of bottom wall through holes and are communicated with the inner cavity of the gas-liquid separation tank.

[0019] Optionally, a heat transfer oil inlet pipe, a heat transfer oil outlet pipe and a guide pipe are provided on the shell-and-tube heat exchanger;

[0020] The heat transfer oil inlet pipe and the heat transfer oil outlet pipe are respectively arranged at the top of the shell-and-tube heat exchanger, and penetrate the shell-and-tube heat exchanger wall from the outside of the shell-and-tube heat exchanger to the heat exchange cavity of the shell-and-tube heat exchanger;

[0021] One end of the guide pipe is connected to the heat transfer oil inlet pipe, and the other end extends to the bottom of the heat exchange cavity of the shell-and-tube heat exchanger.

[0022] Optionally, it also includes a feed head;

[0023] The feed head cover is arranged on the top of the shell and tube heat exchanger;

[0024] The feed end cap is provided with a dilute solution inlet pipe for placing the polymer solution;

[0025] The plurality of heat exchange tubes are respectively connected to the dilute solution inlet pipe;

[0026] The feed end cap is provided with an end cap flange;

[0027] A second flange is provided at the top of the shell-and-tube heat exchanger;

[0028] The second flange is fixedly connected to the head flange.

[0029] Optionally, a diverter cock is provided at the bottom outlet of the heat exchange tube;

[0030] The diverter cock is provided with a plurality of diverter gap holes separated from each other;

[0031] The flow splitting gap holes are respectively connected to the heat exchange tubes;

[0032] The cross-sectional area of ​​the flow splitting gap hole is smaller than the cross-sectional area of ​​the heat exchange tube.

[0033] Optionally, the diverter cock comprises an outer ring and a diverter grid;

[0034] The flow diversion grid is arranged inside the outer ring and fixedly connected to the outer ring;

[0035] A plurality of the flow diversion gap holes are spaced between the flow diversion grid and the outer ring.

[0036] Optionally, three of the flow-dividing gap holes are arranged circumferentially around the flow-dividing cock at intervals, and the flow-dividing grid is in the shape of a triangular star; or,

[0037] The four flow-dividing gap holes are arranged around the flow-dividing cock at circumferential intervals, and the flow-dividing grid is in a cross shape.

[0038] Optionally, the outer peripheral wall of the diverter cock is provided with an external thread;

[0039] The inner peripheral wall of the bottom outlet of the heat exchange tube is provided with an internal thread;

[0040] The external thread of the diverter cock and the internal thread of the heat exchange tube are threadedly connected to each other.

[0041] Optionally, a gas outlet pipe is provided on the top of the gas-liquid separation tank;

[0042] The gas outlet pipe is connected to the inner cavity of the gas-liquid separation tank and is used to discharge the volatile substance gas;

[0043] A concentrated solution outlet pipe is provided at the bottom of the gas-liquid separation tank;

[0044] The concentrated solution outlet pipe is in communication with the inner cavity of the gas-liquid separation tank and is used for discharging the polymer solution from which the volatile substances are separated and stored at the bottom of the gas-liquid separation tank.

[0045] The beneficial effects of the utility model include:

[0046] In the utility model, the bottom structure of the shell-and-tube heat exchanger is inserted into the inner cavity of the gas-liquid separation tank through the socket, and a part of the length of the shell-and-tube heat exchanger is inserted into the gas-liquid separation tank. The bottom outlets of multiple heat exchange tubes extend to the inner cavity of the gas-liquid separation tank and are vertically spaced from the lower end surface of the socket, so as to avoid the edge of the shell-and-tube heat exchanger. The heat exchange tube outlet is adhered to the neck of the flange of the gas-liquid separation tank due to extrusion expansion and rope winding effect, thereby preventing the flow channel from being congested and destroying the integrity of the strips; the polymer solution strips will not stay and adhere to the flange for a long time, causing yellowing and degradation. The strips formed at the bottom outlet of the heat exchange tube can fall into the gas-liquid separation tank in time so that the volatile substances in the strips can diffuse into the gas phase to be extracted, thereby reducing the content of volatile substances in the polymer solution and ensuring the quality of the final polymer solution product.

[0047] A diverter plug with multiple separated diverter gap holes can be set at the bottom outlet of the heat exchange tube, which can divide the falling strips formed at the bottom outlet of the heat exchange tube into multiple strands to form multiple thin strips that fall into the gas-liquid separation tank, greatly increasing the specific surface area of ​​the polymer falling strips in the gas-liquid separation tank, increasing the interface for gas-liquid exchange, effectively improving the degassing efficiency, further reducing the content of volatile substances in the polymer solution, and ensuring the quality of the final polymer solution product.

[0048] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of an insertable polymer solution heat exchange degassing device provided by an embodiment of the utility model.

[0050] Figure 2 yes Figure 1 Schematic diagram of the structure of a shell-and-tube heat exchanger.

[0051] Figure 3 yes Figure 2 A partial cross-sectional view of a shell-and-tube heat exchanger and a strip formed at the bottom outlet of the heat exchange tube.

[0052] Figure 4 A cross-sectional view of a diverter cock provided in one embodiment of the utility model.

[0053] Figure 5 A cross-sectional view of a diverter cock provided in one embodiment of the utility model.

[0054] in:

[0055] 1-Feed head;

[0056] 11- dilute solution inlet pipe;

[0057] 12-Head flange;

[0058] 2-Shell and tube heat exchanger;

[0059] 21- second flange;

[0060] 22-heat transfer oil inlet pipe;

[0061] 23-heat transfer oil outlet pipe;

[0062] 24- heat exchange tube;

[0063] 25- baffle;

[0064] 26- guide tube;

[0065] 27- first flange;

[0066] 28- diverter cock;

[0067] 281- diversion grid;

[0068] 282-diverter gap hole;

[0069] 283-Outer ring.

[0070] 284-external thread;

[0071] 29-Polymer solution falling strips;

[0072] 3-Gas-liquid separation tank;

[0073] 31-separation tank flange;

[0074] 32-socket;

[0075] 33-gas outlet pipe;

[0076] 34-Concentrated solution outlet pipe.

[0077] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model. DETAILED DESCRIPTION

[0078] In order to better understand the technical solution of the present utility model, the embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0079] According to an embodiment of the present utility model, a satellite is provided. Figure 1 The insert-type polymer solution heat exchange degassing device comprises a feed end cap 1, a shell-and-tube heat exchanger 2 and a gas-liquid separation tank 3. A socket 32 ​​is provided at the top of the gas-liquid separation tank 3. The socket 32 ​​structure provided at the top of the gas-liquid separation tank 3 matches the bottom structure of the shell-and-tube heat exchanger 2, so that the bottom structure of the shell-and-tube heat exchanger 2 can be inserted into the inner cavity of the gas-liquid separation tank 3 through the socket 32.

[0080] See also Figure 2 , a plurality of heat exchange tubes 24 are arranged inside the shell-and-tube heat exchanger 2, and outlets are provided at the bottom ends of the plurality of heat exchange tubes 24. Specifically, the plurality of heat exchange tubes 24 may extend from the top of the shell-and-tube heat exchanger 2 to the bottom wall of the shell-and-tube heat exchanger 2. For example, the plurality of heat exchange tubes 24 may be fixedly arranged inside the shell-and-tube heat exchanger 2 through a baffle 25, and the baffle 25 is fixedly connected to the wall of the shell-and-tube heat exchanger 2. A plurality of bottom wall through holes are correspondingly provided on the bottom wall of the shell-and-tube heat exchanger 2. The bottom outlets of the plurality of heat exchange tubes 24 respectively penetrate through the plurality of bottom wall through holes, and the bottom outlets of the plurality of heat exchange tubes 24 are respectively connected to the inner cavity of the gas-liquid separation tank 3. For example, as shown in the figure, the bottom outlets of the plurality of heat exchange tubes 24 may be located at the bottom wall of the shell-and-tube heat exchanger 2. Of course, in some other examples, the bottom outlets of the plurality of heat exchange tubes 24 may also protrude from the lower surface of the bottom wall of the shell-and-tube heat exchanger 2.

[0081] The bottom structure of the shell-and-tube heat exchanger 2 is inserted into the inner cavity of the gas-liquid separation tank 3 through the top socket 32 ​​of the gas-liquid separation tank 3. The bottom outlets of the plurality of heat exchange tubes 24 extend to the inner cavity of the gas-liquid separation tank 3, and the bottom outlets of the plurality of heat exchange tubes 24 are spaced apart from the lower end surface of the socket 32 ​​in the vertical direction. For example, the bottom end of the shell-and-tube heat exchanger 2 and the lower end surface of the socket 32 ​​may be spaced apart by a set distance in the vertical direction.

[0082] The bottom structure of the shell-and-tube heat exchanger 2 is inserted into the inner cavity of the gas-liquid separation tank 3 through the socket 32, and part of the length of the shell-and-tube heat exchanger is inserted into the gas-liquid separation tank 3. The bottom outlets of multiple heat exchange tubes 24 extend to the inner cavity of the gas-liquid separation tank 3 and are vertically spaced from the lower end surface of the socket 32, so as to avoid the falling strips 29 at the outlets of the edge heat exchange tubes 24 of the shell-and-tube heat exchanger 2 from adhering to the flange neck of the gas-liquid separation tank 3 due to extrusion expansion and rope winding effect, thereby causing congestion in the flow channel and destroying the integrity of the falling strips 29; the falling strips 29 of the polymer solution will not stay and adhere to the flange for a long time, causing yellowing and degradation, and the falling strips 29 formed at the bottom outlet of the heat exchange tube 24 can fall into the gas-liquid separation tank 3 in time, so that the volatile substances in the falling strips 29 can diffuse into the gas phase to be extracted, thereby reducing the content of volatile substances in the polymer solution and ensuring the quality of the final polymer solution product.

[0083] The shell-and-tube heat exchanger 2 is fixedly connected to the gas-liquid separation tank 3, and the fixed connection structure of the two can be set as needed, as long as it can meet the following requirements: the bottom structure of the shell-and-tube heat exchanger 2 is inserted into the inner cavity of the gas-liquid separation tank 3 through the top socket 32 ​​of the gas-liquid separation tank 3, and the bottom outlets of multiple heat exchange tubes 24 extend to the inner cavity of the gas-liquid separation tank 3 and are vertically spaced from the lower end surface of the socket 32.

[0084] In this embodiment, please refer to Figure 1 and Figure 2, the outer peripheral wall of the shell and tube heat exchanger 2 may be protrudingly provided with a first flange 27. The first flange 27 is located between the top and the bottom of the shell and tube heat exchanger 2. A separation tank flange 31 may be provided at the top of the gas-liquid separation tank 3. The socket 32 ​​is provided through the separation tank flange 31. The first flange 27 on the shell and tube heat exchanger 2 is fixedly connected to the separation tank flange 31 on the gas-liquid separation tank 3, thereby fixing the shell and tube heat exchanger 2 and the gas-liquid separation tank 3 together. For example, the first flange 27 and the gas-liquid separation tank 3 may be fixedly connected together by threads.

[0085] Of course, in some other embodiments, the shell-and-tube heat exchanger 2 and the gas-liquid separation tank 3 may also be fixedly connected together by a snap connection, a magnetic connection or other connection structures.

[0086] In this embodiment, please refer to Figure 1 , the feed head 1 can be covered on the top of the shell-and-tube heat exchanger 2. The feed head 1 is fixedly connected to the shell-and-tube heat exchanger 2. Specifically, a head flange 12 may be provided on the feed head 1. A second flange 21 may be provided on the top of the shell-and-tube heat exchanger 2. The second flange 21 on the shell-and-tube heat exchanger 2 is fixedly connected to the head flange 12 of the feed head 1, thereby fixing the feed head 1 to the shell-and-tube heat exchanger 2. Of course, in some other embodiments, the feed head 1 and the shell-and-tube heat exchanger 2 can also be fixedly connected together by a snap connection, a magnetic connection or other connection structures.

[0087] A dilute solution inlet pipe 11 may be provided on the feed end cap 1. The dilute solution inlet pipe 11 is structured to be suitable for placing the polymer solution. The multiple heat exchange tubes 24 of the shell-and-tube heat exchanger 2 are respectively connected to the dilute solution inlet pipe 11 on the feed end cap 1.

[0088] See also Figure 2 The shell-and-tube heat exchanger 2 may be provided with a heat transfer oil inlet pipe 22, a heat transfer oil outlet pipe 23 and a guide pipe 26. The heat transfer oil inlet pipe 22 and the heat transfer oil outlet pipe 23 are respectively provided at the top of the shell-and-tube heat exchanger 2. The heat transfer oil inlet pipe 22 may pass through the wall of the shell-and-tube heat exchanger 2 from the outside of the shell-and-tube heat exchanger 2 to the heat exchange cavity of the shell-and-tube heat exchanger 2. The heat transfer oil outlet pipe 23 may pass through the wall of the shell-and-tube heat exchanger 2 from the outside of the shell-and-tube heat exchanger 2 to the heat exchange cavity of the shell-and-tube heat exchanger 2.

[0089] One end of the guide pipe 26 is connected to the heat transfer oil inlet pipe 22, and the other end extends to the bottom of the heat exchange cavity of the shell-and-tube heat exchanger 2. The height of the heat transfer oil inlet pipe 22 can be equal to or higher than the height of the heat transfer oil outlet pipe 23. The heat transfer oil can enter the bottom of the heat exchange cavity of the heat exchanger through the heat transfer oil inlet pipe 22 and the heat transfer oil inlet pipe 23 in sequence, and then flow out to the outside of the shell-and-tube heat exchanger 2 through the heat transfer oil outlet pipe 23.

[0090] The gas-liquid separation tank 3 may be a space for providing gas-liquid exchange. A gas outlet pipe 33 may be provided at the top of the gas-liquid separation tank 3. The gas outlet pipe 33 is connected to the inner cavity of the gas-liquid separation tank 3 and is used to discharge volatile substances. For example, the gas outlet pipe 33 may be connected to an external pump of the gas-liquid separation tank 3 to extract the volatile substances to the outside of the gas-liquid separation tank 3.

[0091] A concentrated solution outlet pipe 34 may be provided at the bottom of the gas-liquid separation tank 3. The concentrated solution outlet pipe 34 is connected to the inner cavity of the gas-liquid separation tank 3 and is used to discharge the polymer solution from which the volatile substances are separated and stored at the bottom of the gas-liquid separation tank 3.

[0092] Consideration: Due to the economic impact of the shell-and-tube heat exchanger that transports high-viscosity polymer solutions, the multiple heat exchange tubes of the shell-and-tube heat exchanger should not be made very thin, otherwise the pressure drop will be very high, and the polymer solution falls directly into the gas-liquid separation tank from the heat exchange tube outlet of the heat exchanger. The diameter of the falling strip is constrained by the inner diameter of the heat exchange tube, which will cause the diameter of the falling strip to be very thick, the specific surface area of ​​gas-liquid mass transfer is limited, and the degassing efficiency is low.

[0093] In this embodiment, please refer to Figure 2 and Figure 3 , a diverter plug 28 may be provided at the bottom outlet of the heat exchange tube. The outer peripheral wall of the diverter plug 28 may be provided with an external thread 284. The inner peripheral wall of the bottom outlet of the heat exchange tube may be correspondingly provided with an internal thread. The external thread 284 of the diverter plug 28 and the internal thread of the heat exchange tube are threadedly connected to each other, so that the diverter plug 28 and the heat exchange tube can be detachably fixedly connected together.

[0094] The flow splitter plug 28 is provided with a plurality of mutually separated flow splitter gap holes 282. The plurality of flow splitter gap holes 282 are respectively connected to the heat exchange tubes. The cross-sectional area of ​​the flow splitter gap holes 282 is smaller than the cross-sectional area of ​​the heat exchange tubes.

[0095] By arranging a diverter plug 28 with a plurality of separated diverter gap holes 282 at the bottom outlet of the heat exchange tube, the falling strips formed at the bottom outlet of the heat exchange tube can be divided into multiple strands to form multiple thin strips 29 that fall into the gas-liquid separation tank 3, which greatly increases the specific surface area of ​​the polymer falling strips 29 in the gas-liquid separation tank 3, increases the interface for gas-liquid exchange, can effectively improve the degassing efficiency, further reduce the content of volatile substances in the polymer solution, and ensure the quality of the final polymer solution product.

[0096] Specifically, see Figure 4 or Figure 5, the diverter valve 28 may include an outer ring 283 and a diverter grid 281. The aforementioned external thread 284 may be arranged on the outer peripheral wall of the outer ring 283. The diverter grid is arranged inside the outer ring 283, and the diverter grid is fixedly connected to the outer ring 283. A plurality of diverter gap holes 282 are arranged between the diverter grid and the outer ring 283. A connecting portion may be provided at the portion of the diverter grid facing the outer ring 283, and the diverter grid may be fixedly connected to the outer ring 283 through the connecting portion. For example, the diverter grid may be welded to the outer ring 283, or may be integrally formed.

[0097] For example Figure 4 As shown, three flow-dividing gap holes 282 can be arranged circumferentially at intervals around the flow-dividing cock 28. Correspondingly, the flow-dividing grid 281 is in the shape of a triangular star.

[0098] For example Figure 5 As shown, four flow-dividing gap holes 282 can be arranged circumferentially at intervals around the flow-dividing cock 28. Correspondingly, the flow-dividing grid 281 is in a cross shape.

[0099] In a specific implementation, please refer to Figures 1 to 3 ,and Figure 4 or Figure 5 In operation, the polymer solution can enter the shell-and-tube heat exchanger 2 through the dilute solution inlet pipe 11 of the feed head 1, and the polymer solution exchanges heat with the heat transfer oil in the heat exchange chamber of the shell-and-tube heat exchanger 2 in the shell-and-tube heat exchanger 2. Afterwards, the polymer solution is divided into multiple thin strips in the diverter plug 28 and falls into the gas-liquid separation tank 3. The volatile substances in the falling strips 29 have sufficient time to diffuse into the gas phase during this process and are extracted from the gas outlet pipe 33 to keep the gas phase pressure in the gas-liquid separation tank 3 stable, and the liquid level of the polymer solution from which the volatile substances are separated at the bottom of the gas-liquid separation tank 3 remains unchanged.

[0100] In the utility model, the bottom structure of the shell-and-tube heat exchanger is inserted into the inner cavity of the gas-liquid separation tank through the socket, and a part of the length of the shell-and-tube heat exchanger is inserted into the gas-liquid separation tank. The bottom outlets of multiple heat exchange tubes extend to the inner cavity of the gas-liquid separation tank and are vertically spaced from the lower end surface of the socket, so as to avoid the edge of the shell-and-tube heat exchanger. The heat exchange tube outlet is adhered to the neck of the flange of the gas-liquid separation tank due to extrusion expansion and rope winding effect, thereby preventing the flow channel from being congested and destroying the integrity of the strips; the polymer solution strips will not stay and adhere to the flange for a long time, causing yellowing and degradation. The strips formed at the bottom outlet of the heat exchange tube can fall into the gas-liquid separation tank in time so that the volatile substances in the strips can diffuse into the gas phase to be extracted, thereby reducing the content of volatile substances in the polymer solution and ensuring the quality of the final polymer solution product.

[0101] A diverter plug with multiple separated diverter gap holes can be set at the bottom outlet of the heat exchange tube, which can divide the falling strips formed at the bottom outlet of the heat exchange tube into multiple strands to form multiple thin strips that fall into the gas-liquid separation tank, greatly increasing the specific surface area of ​​the polymer falling strips in the gas-liquid separation tank, increasing the interface for gas-liquid exchange, effectively improving the degassing efficiency, further reducing the content of volatile substances in the polymer solution, and ensuring the quality of the final polymer solution product.

[0102] It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0103] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0104] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0105] It should be understood that in the description of the present invention, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance, and are not used to describe a specific order or sequence.

[0106] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0107] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the utility model is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0108] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the utility model in essence or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for a terminal (which can be a mobile phone, computer, control device, or network equipment, etc.) to execute the methods described in each embodiment of the utility model.

[0109] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. An insert-type polymer solution heat exchange degassing device, characterized in that: include: A shell-and-tube heat exchanger, wherein a plurality of heat exchange tubes are arranged inside the shell-and-tube heat exchanger; and A gas-liquid separation tank, wherein a socket is provided at the top of the gas-liquid separation tank; The bottom structure of the shell-and-tube heat exchanger is inserted into the inner cavity of the gas-liquid separation tank through the socket; The bottom outlets of the plurality of heat exchange tubes extend to the inner cavity of the gas-liquid separation tank and are vertically spaced from the lower end surface of the socket.

2. The insertable polymer solution heat exchange degassing device according to claim 1, characterized in that: The outer peripheral wall of the shell-and-tube heat exchanger is protrudingly provided with a first flange; The first flange is located between the top end and the bottom end of the shell-and-tube heat exchanger; The top of the gas-liquid separation tank is provided with a separation tank flange; The socket is arranged through the flange of the separation tank; The first flange is fixedly connected to the separation tank flange.

3. The insertable polymer solution heat exchange degassing device according to claim 2, characterized in that: The plurality of heat exchange tubes extend from the top of the shell-and-tube heat exchanger to the bottom wall of the shell-and-tube heat exchanger; The bottom wall of the shell-and-tube heat exchanger is provided with a plurality of bottom wall through holes; The bottom end outlets of the plurality of heat exchange tubes respectively penetrate the plurality of bottom wall through holes and are communicated with the inner cavity of the gas-liquid separation tank.

4. The insertable polymer solution heat exchange degassing device according to claim 1, characterized in that: The shell-and-tube heat exchanger is provided with a heat transfer oil inlet pipe, a heat transfer oil outlet pipe and a guide pipe; The heat transfer oil inlet pipe and the heat transfer oil outlet pipe are respectively arranged at the top of the shell-and-tube heat exchanger, and penetrate the shell-and-tube heat exchanger wall from the outside of the shell-and-tube heat exchanger to the heat exchange cavity of the shell-and-tube heat exchanger; One end of the guide pipe is connected to the heat transfer oil inlet pipe, and the other end extends to the bottom of the heat exchange cavity of the shell-and-tube heat exchanger.

5. The insertable polymer solution heat exchange degassing device according to claim 1, characterized in that: Also includes a feed head; The feed head cover is arranged on the top of the shell and tube heat exchanger; The feed end cap is provided with a dilute solution inlet pipe for placing the polymer solution; The plurality of heat exchange tubes are respectively connected to the dilute solution inlet pipe; The feed end cap is provided with an end cap flange; A second flange is provided at the top of the shell-and-tube heat exchanger; The second flange is fixedly connected to the head flange.

6. The insertable polymer solution heat exchange degassing device according to claim 1, characterized in that: A diverter cock is provided at the bottom outlet of the heat exchange tube; The diverter cock is provided with a plurality of diverter gap holes separated from each other; The split flow gap holes are respectively connected to the heat exchange tubes; The cross-sectional area of ​​the flow splitting gap hole is smaller than the cross-sectional area of ​​the heat exchange tube.

7. The insertable polymer solution heat exchange degassing device according to claim 6, characterized in that: The diverter cock comprises an outer ring and a diverter grid; The flow diversion grid is arranged inside the outer ring and fixedly connected to the outer ring; A plurality of the flow splitting gap holes are spaced between the flow splitting grid and the outer ring.

8. The insertable polymer solution heat exchange degassing device according to claim 7, characterized in that: The three diversion gap holes are arranged around the diversion cock at intervals in the circumferential direction, and the diversion grid is in the shape of a triangular star; or, the four diversion gap holes are arranged around the diversion cock at intervals in the circumferential direction, and the diversion grid is in the shape of a cross.

9. The insertable polymer solution heat exchange degassing device according to claim 6, characterized in that: The outer peripheral wall of the diverter cock is provided with an external thread; The inner peripheral wall of the bottom outlet of the heat exchange tube is provided with an internal thread; The external thread of the diverter cock and the internal thread of the heat exchange tube are threadedly connected to each other.

10. The insertable polymer solution heat exchange degassing device according to claim 1, characterized in that: A gas outlet pipe is provided on the top of the gas-liquid separation tank; The gas outlet pipe is connected to the inner cavity of the gas-liquid separation tank and is used to discharge the volatile substance gas; A concentrated solution outlet pipe is provided at the bottom of the gas-liquid separation tank; The concentrated solution outlet pipe is in communication with the inner cavity of the gas-liquid separation tank and is used for discharging the polymer solution from which the volatile substances are separated and stored at the bottom of the gas-liquid separation tank.

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