Gas-liquid separation pipe based on flash evaporation and flash evaporation device
The gas-liquid separation pipe and flash vaporization apparatus address incomplete liquid phase separation by maintaining heat in the liquid phase, enhancing separation efficiency and preventing adhesion to device walls.
Patent Information
- Application Number
- CN202420590721.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-03-26
AI Technical Summary
In existing flash evaporation tanks, the reaction products are prone to adhere to the inner wall of the equipment, resulting in insufficient liquid phase separation, affecting the flash evaporation separation effect and efficiency.
Add a gas-liquid separation tube at the feed port of the flash evaporation device, and passes through the thermal conduction cavity and heat conduction tube between the inner cylinder and the jacket to increase the gas-liquid separation area and time, maintain the temperature of the high-viscosity liquid, prevent adhesion, and adopt non-stick coatings and thermally conductive structures.
It improves the adequacy and efficiency of gas-liquid separation, prevents high-viscosity liquid from adhering to the inner wall, and significantly improves the flash separation effect and liquid phase collection rate.
Smart Images
Figure CN223096155U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of flash evaporation equipment, and particularly relates to a gas-liquid separation tube and a flash evaporation device based on flash evaporation. Background Art
[0002] Flash evaporation separation is a commonly used physical separation technology. Its basic principle is to utilize the instantaneous evaporation of a liquid under reduced pressure conditions to achieve the separation of different components in a mixture. Flash evaporation separation is usually used to separate volatile substances and non-volatile substances, or to separate liquid mixtures with different boiling points. Polyolefin elastomer is a high-performance polyolefin that exhibits rubber elasticity at room temperature. The polyolefin elastomer (POE) device mainly uses the solution method to produce polyolefin elastomer (POE). The flash evaporation separation system is one of its key components, and the mixed liquid carrying the polyolefin elastomer is separated by flash evaporation.
[0003] In the existing flash evaporation tank, after the reaction products enter, the high-viscosity materials are likely to adhere to the inner wall of the equipment, resulting in insufficient liquid-phase separation, and the flash evaporation separation effect and efficiency are affected. Summary of the Utility Model
[0004] This application aims to at least solve to a certain extent the technical problem of insufficient liquid-phase separation in the flash evaporation tank. To this end, this application provides a gas-liquid separation tube and a flash evaporation device based on flash evaporation, which increases the separation time of the reaction products in the flash evaporation tank, avoids the loss of unseparated components from the gas-phase outlet under the action of gas-liquid entrainment, prevents the separated high-viscosity liquid materials from adhering to the inner wall of the equipment, enables more sufficient liquid-phase separation, and improves the flash evaporation separation effect and efficiency.
[0005] In the first aspect, an embodiment of this application provides a gas-liquid separation tube based on flash evaporation, which includes:
[0006] A main body tube, disposed in the flash evaporation device, including an inner cylinder and a jacket. The jacket is connected to the inner cylinder in a sleeved manner. The first ends of the inner cylinder and the jacket are used to connect to the feed port of the flash evaporation device, and a heat conduction cavity is formed between the jacket and the inner cylinder;
[0007] A heat conduction tube, used to introduce a heat transfer fluid into the heat conduction cavity, and the heat conduction tube is communicated with the heat conduction cavity.
[0008] In an optional embodiment, the sizes of the first ends of the inner cylinder and the jacket are smaller than the sizes of the second ends of the inner cylinder and the jacket, so as to increase the flow area after the feed enters the flash evaporation device and decrease the flow area for the gas phase to flow out in the flash evaporation device.
[0009] In an optional embodiment, the inner cylinder includes a butt-jointed inner cylinder extension section and an inner cylinder diameter-changing section. The inner cylinder extension section and the jacket extension section are used to connect to the first end of the flash evaporation device, and the sizes of the inner cylinder diameter-changing section and the jacket diameter-changing section gradually increase along the direction from the first end to the second end.
[0010] In an alternative embodiment, the surfaces of the inner cylinder and the jacket that come into contact with the gas flow inside the flash evaporation device are coated with a non-stick coating.
[0011] In an alternative embodiment, the heat conduction tube includes an inlet tube and an outlet tube. The inlet tube is connected to the second end of the jacket or the inner cylinder, and the outlet tube is connected to the first end of the jacket or the inner cylinder, such that the hot fluid enters from the inlet tube and exits from the outlet tube.
[0012] In an alternative embodiment, the inlet tube and the outlet tube respectively pass through the outer wall of the flash evaporation device and extend to the outside.
[0013] In an alternative embodiment, the main body tube further includes a sealing ring for sealing the heat conduction cavity, and the sealing ring is provided at the second end of the inner cylinder and the jacket.
[0014] In an alternative embodiment, it further includes a connecting member for external connection, and the connecting member is provided at the first end of the inner cylinder and the jacket.
[0015] In an alternative embodiment, it further includes a support rib plate, and the support rib plate is provided on the outer periphery of the first end of the jacket. The support rib plate is used for connecting the flash evaporation device.
[0016] In a second aspect, an embodiment of the present application provides a flash evaporation device, which includes the above-mentioned flash evaporation-based gas-liquid separation tube and a tank body. The first ends of the inner cylinder and the jacket are respectively connected to the feed inlet of the tank body.
[0017] As can be seen from the above technical solutions, the beneficial effects of the present application are as follows:
[0018] 1. By means of the gas-liquid separation tube in the present application, a section can be added at the feed inlet of the flash evaporation device, so that when the gas-phase reaction product enters the flash evaporation device, the gas-liquid separation area can be increased, thereby increasing the separation time of the reaction product in the flash evaporation device. In this way, gas-liquid separation can be carried out more fully, avoiding the loss of unseparated components from the gas-phase outlet under the action of gas-liquid entrainment. Through the heat conduction cavity and the heat conduction tube between the inner cylinder and the jacket, the heat conduction cavity between the inner cylinder and the jacket is filled with a hot fluid. In this way, during gas-liquid separation, the highly viscous liquid can maintain a certain amount of heat and keep the temperature, and it is not easy to adhere to the inner cylinder, preventing the separated highly viscous liquid material from adhering to the inner wall of the equipment. The highly viscous liquid material can be collected smoothly, and the liquid-phase separation is more sufficient, improving the flash evaporation separation effect and efficiency.
[0019] 2. By arranging the gas-liquid separation tube at the feed inlet of the tank body in the present application, the reaction product can first perform gas-liquid separation in the gas-liquid separation tube after entering the tank body, reducing the direct contact of the reaction product with the inner wall of the flash evaporation device after entering, significantly reducing the liquid-phase adhesion to the inner wall. At the same time, by using the gas-liquid separation tube, the gas and liquid can be separated more fully, and the liquid phase can be collected smoothly, effectively improving the liquid-phase separation efficiency. Description of the Drawings
[0020] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other embodiments and drawings can also be obtained based on these drawings.
[0021] Figure 1 It shows a schematic application diagram of an embodiment of the gas-liquid separation tube based on flash evaporation of the present utility model;
[0022] Figure 2 It shows a partial schematic diagram of an embodiment of the gas-liquid separation tube based on flash evaporation of the present utility model;
[0023] Figure 3 It shows a schematic diagram of an embodiment of the flash evaporation device of the present utility model;
[0024] Reference numerals: 100, gas-liquid separation tube; 110, main body tube; 110a, first end; 110b, second end; 111, inner cylinder; 111a, inner cylinder extension section; 111b, inner cylinder reduced-diameter section; 112, jacket; 112a, jacket extension section; 112b, jacket reduced-diameter section; 113, heat conduction cavity; 114, sealing ring; 115, connecting piece; 116, support rib plate; 120, heat conduction tube; 121, inlet tube; 122, outlet tube; 200, flash evaporation device; 201, feed inlet; 202, gas-phase outlet; 203, liquid-phase outlet. Detailed implementation manners
[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0026] It should be noted that all the directional indications in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indications will also change accordingly.
[0027] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0028] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0029] The present application will be described below with reference to the accompanying drawings and specific embodiments:
[0030] Please refer to Figure 1, in the embodiment of the first aspect of the present application, a flash-based gas-liquid separation tube is provided, which includes: a main body tube 110 and a heat conduction tube 120. The main body tube 110 is disposed inside the flash evaporation device 200 and extends from the center of the upper head of the flash evaporation device 200 to the inside of the device. The upper head is the position of the feed port 201. The main body tube 110 includes an inner cylinder 111 and a jacket 112. The inner cylinder 111 and the jacket 112 are respectively tube structures, which can be square tubes, circular tubes or other forms of tube structures. The jacket 112 is connected to the inner cylinder 111 by a sleeving method, and there is a gap between the two. In the figure, the first end 110a is at the top of the inner cylinder 111 and the jacket 112, and the second end 110b is at the bottom. The first end 110a of the inner cylinder 111 and the first end 110a of the jacket 112 are used to connect to the feed port 201 of the flash evaporation device 200. The gap between the inner side of the jacket 112 and the outer side of the inner cylinder 111 forms a heat conduction cavity 113. After the jacket 112 is connected to the inner cylinder 111, it is fixed by welding; the heat conduction tube 120 is used to introduce a heat transfer fluid into the heat conduction cavity 113. The heat conduction tube 120 communicates with the heat conduction cavity 113. One end of the heat conduction tube 120 is connected to the jacket 112, and the other end of the heat conduction tube 120 is connected to the wall of the flash evaporation device 200. The reaction product enters through the feed port 201 of the flash evaporation device 200, and then passes through a gas-liquid separation tube 100. Gas-liquid separation is carried out in the gas-liquid separation tube 100 to obtain a gaseous component and a liquid component. The gaseous component evaporates from the edge of the second end 110b of the gas-liquid separation tube 100 and flows upward, and finally is discharged from the gas phase outlet 202 of the flash evaporation device 200. The liquid component flows downward from the second end 110b of the gas-liquid separation tube 100. The heat transfer fluid enters the bell-mouth jacket 112 from one heat conduction tube 120, fills the heat conduction cavity 113 and then flows out from the other heat conduction tube 120.
[0031] In the existing flash evaporation equipment, after the reaction product enters, the highly viscous polyolefin elastomer is likely to condense on the inner wall of the flash evaporation device 200. This is because the polyolefin elastomer cools down at the tank wall of the flash evaporation device 200, resulting in adhesion to the inner wall. This causes insufficient liquid-phase separation in the flash evaporation device 200 and poor flash separation effect. In this application, the gas-liquid separation tube 100 can add a section at the feed port 201 of the flash evaporation device 200, enabling the gas-phase reaction product to increase the gas-liquid separation area of action after entering the flash evaporation device 200, thereby increasing the separation time of the reaction product in the flash evaporation device 200. This can achieve more thorough gas-liquid separation, avoiding the loss of unseparated components from the gas-phase outlet 202 under the action of gas-liquid entrainment. Through the heat conduction cavity 113 and the heat conduction tube 120 between the inner cylinder 111 and the jacket 112, the heat conduction cavity 113 is filled with a heat transfer fluid between the inner cylinder 111 and the jacket 112. In this way, during gas-liquid separation, the highly viscous liquid can maintain a certain amount of heat and temperature, and is not easily attached to the inner cylinder 111, preventing the separated highly viscous liquid material from adhering to the inner wall of the equipment. The highly viscous liquid material can be smoothly collected, the liquid-phase separation is more thorough, and the flash separation effect and efficiency are improved.
[0032] In an alternative embodiment, the size of the first end 110a of the inner cylinder 111 and the jacket 112 is smaller than the size of the second end 110b of the inner cylinder 111 and the jacket 112. It can be in structural forms such as gradually varying diameter or stepwise varying diameter, increasing the flow area after the feed enters the flash evaporation device 200 and decreasing the flow area for the gas-phase to flow out in the flash evaporation device 200. Since the gas-phase flows upward between the inner wall of the flash evaporation device 200 and the jacket 112, this can reduce the flow area of the gas-phase flowing upward in the flash evaporation device 200, thereby reducing the gas-phase entrainment of the liquid-phase discharge, such as reducing the polyolefin elastomer in the gas-phase. In an alternative embodiment, the inner cylinder 111 includes a butt-jointed inner cylinder extension section 111a and an inner cylinder variable-diameter section 111b, and the jacket 112 includes a butt-jointed jacket extension section 112a and a jacket variable-diameter section 112b. The inner cylinder extension section 111a and the jacket extension section 112a extend from the feed port 201 into the interior of the flash evaporation device 200. The inner cylinder extension section 111a and the jacket extension section 112a are used to connect the first end 110a of the flash evaporation device 200. The sizes of the inner cylinder variable-diameter section 111b and the jacket variable-diameter section 112b gradually increase along the direction from the first end 110a to the second end 110b. In an alternative embodiment, the inner cylinder variable-diameter section 111b and the jacket variable-diameter section 112b are respectively trumpet-shaped structures that gradually expand towards the second end 110b, and the lengths of the inner cylinder extension section 111a and the jacket extension section 112a are respectively equal to the lengths of the inner cylinder variable-diameter section 111b and the jacket variable-diameter section 112b.
[0033] In an optional embodiment, the surfaces of the inner cylinder 111 and the jacket 112 that are in contact with the airflow in the flash evaporation device 200 are coated with a non-stick coating. The non-stick coating refers to a special coating that can prevent substances from adhering to the surface, and there are corresponding industry standards. Specifically, the non-stick coating is coated on the inner side of the inner cylinder 111 and the outer side of the jacket 112. The coating position also includes the outer surface where the inner cylinder 111 and the jacket 112 are connected. The non-stick coating is Teflon, and the exposed surface of the jacket 112 of the inner cylinder 111 is sprayed with a Teflon coating, which can prevent the liquid material from adhering, and the polyolefin elastomer is not easy to condense on the inner wall of the gas-liquid separation tube 100, thereby reducing the occurrence of adhesion and improving the flash evaporation separation effect and the liquid phase collection rate.
[0034] In an optional embodiment, the heat pipe 120 includes an inlet pipe 121 and an outlet pipe 122, the inlet pipe 121 is connected to the second end 110b of the jacket 112 or the inner tube 111, and the outlet pipe 122 is connected to the first end 110a of the jacket 112 or the inner tube 111, so that the hot fluid enters from the inlet pipe 121 and is discharged from the outlet pipe 122; LWN flanges are provided at the outer ends of the inlet pipe 121 and the outlet pipe 122 to ensure the strength of the heat pipe 120; the hot fluid can be introduced into the heat conduction cavity 113 through the inlet pipe 121, and the hot fluid in the heat conduction cavity 113 can be discharged through the outlet pipe 122. In an optional embodiment, the inlet pipe 121 and the outlet pipe 122 respectively pass through the wall of the flash evaporation device 200 and extend to the outside. The wall of the flash evaporation device 200 is provided with two through holes, which are respectively located on the side wall and the wall near the feed port 201. The inlet pipe 121 is connected to the through hole at the side wall, and the outlet pipe 122 is connected to the through hole at the feed port 201. After the connection, it is fixed by welding, so that the hot fluid can flow from the second end 110b of the inner cylinder 111 and the jacket 112 to the first end 110a, which can make full use of the heat and keep the liquid phase in a good flow state when flowing down from the inner side of the inner cylinder 111.
[0035] Please refer to Figure 2 In an optional embodiment, the main tube 110 further includes a closed ring 114 for closing the heat conduction cavity 113. The closed ring 114 is annular and is disposed at the second end 110b of the inner tube 111 and the jacket 112. At this end, there is a gap between the inner tube 111 and the jacket 112, and the closed ring 114 closes the gap. The closed ring 114 is welded and fixed to the inner tube 111 and the jacket 112 respectively. The inner tube 111, the jacket 112 and the closed ring 114 are connected to each other to form a heat conduction cavity 113. The heat conduction cavity 113 is closed, leaving only two holes for entering and exiting the heat fluid respectively. One hole is located at the second end 110b of the jacket 112 and is welded to the inlet pipe 121, and the other hole is located at the first end 110a of the jacket 112 and is welded to the outlet pipe 122.
[0036] In an alternative embodiment, a connecting member 115 is further included for external connection. The connecting member 115 is provided at the first end 110a of the inner cylinder 111 and the jacket 112. The first end 110a of the inner cylinder 111 and the first end 110a of the jacket 112 are spaced apart and are both welded to the connecting member 115. The connecting member 115 facilitates connection to the reaction product generation system or device, so as to introduce the gas to be flash-evaporated into the gas-liquid separation tube 100. The connecting member 115 adopts a flange structure or can be other forms of structures, and the docking is convenient through the flange.
[0037] In an alternative embodiment, a support rib plate 116 is further included. The support rib plate 116 is provided on the outer periphery of the first end 110a of the jacket 112. A plurality of support rib plates 116 are provided and are arranged around the outer wall of the first end 110a of the jacket 112 at intervals. The support rib plate 116 is used to connect the flash evaporation device 200. The support rib plate 116 is vertically arranged. The side of the support rib plate 116 is welded and fixed to the outer wall of the jacket 112. The top end of the support rib plate 116 is connected to the connecting member 115, and the bottom end is connected to the outer wall edge of the feed inlet 201 of the flash evaporation device 200, and the connection method is welding.
[0038] Please refer to Figure 3 , in the second aspect embodiment of the present application, a flash evaporation device 200 is provided, which includes the above-mentioned gas-liquid separation tube 100 based on flash evaporation and a tank body 210. The first end 110a of the inner cylinder 111 and the first end 110a of the jacket 112 are respectively connected to the feed inlet 201 of the tank body 210. The structure of the gas-liquid separation tube 100 is as in the first aspect embodiment above. The tank body 210 has the structure of a conventional flash evaporation device, with a feed inlet 201, a gas phase outlet 202, and a liquid phase outlet 203. The feed inlet 201 is provided at the top end of the tank body 210. The reaction product enters through the gas-liquid separation tube 100. After gas-liquid separation, it is convenient for the liquid phase to enter the bottom of the tank body 210 under the action of gravity for collection.
[0039] In the flash evaporation device 200 of the prior art, the inner wall is prone to adhering to the liquid phase and remaining inside, resulting in insufficient liquid phase separation and also bringing difficulties in cleaning. In the present application, by arranging the gas-liquid separation tube 100 at the feed inlet 201 of the tank body 210, the reaction product can first perform gas-liquid separation in the gas-liquid separation tube 100 after entering the tank body 210, reducing the direct contact between the reaction product and the inner wall of the flash evaporation device 200 after entering, significantly reducing the adhesion of the liquid phase to the inner wall. At the same time, by adopting the gas-liquid separation tube 100, the gas and liquid can be separated more fully, the liquid phase can be collected smoothly, and the liquid phase separation efficiency is effectively improved.
[0040] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", "optional examples" or "optional implementation manners", etc., mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.
[0041] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.
[0042] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.
Claims
1. A flash-based gas-liquid separation tube, characterized in that Comprising: A main pipe (110) is disposed inside the flash evaporation device (200), and includes an inner cylinder (111) and a jacket (112). The jacket (112) is connected to the inner cylinder (111) in a sleeved manner. The first ends (110a) of the inner cylinder (111) and the jacket (112) are used to connect to the feed inlet (201) of the flash evaporation device (200), and a heat conduction cavity (113) is formed between the jacket (112) and the inner cylinder (111); A heat conduction pipe (120) is used to introduce a heat transfer fluid into the heat conduction cavity (113), and the heat conduction pipe (120) communicates with the heat conduction cavity (113).
2. The flash-based gas-liquid separation tube according to claim 1, wherein The sizes of the first ends (110a) of the inner cylinder (111) and the jacket (112) are smaller than the sizes of the second ends (110b) of the inner cylinder (111) and the jacket (112), so that the flow area after the feed enters the flash evaporation device (200) is increased, and the flow area for the gas phase to flow out of the flash evaporation device (200) is decreased.
3. The flash-based gas-liquid separation tube according to claim 2, wherein The inner cylinder (111) includes a butt-jointed inner cylinder extension section (111a) and an inner cylinder diameter-changing section (111b), and the jacket (112) includes a butt-jointed jacket extension section (112a) and a jacket diameter-changing section (112b). The inner cylinder extension section (111a) and the jacket extension section (112a) are used to connect to the first end (110a) of the flash evaporation device (200), and the sizes of the inner cylinder diameter-changing section (111b) and the jacket diameter-changing section (112b) gradually increase along the direction from the first end (110a) to the second end (110b).
4. The flash-based gas-liquid separation tube according to claim 1, wherein The surfaces of the inner cylinder (111) and the jacket (112) that come into contact with the gas flow inside the flash evaporation device (200) are coated with non-stick coatings.
5. The flash-based gas-liquid separation tube according to claim 1, wherein The heat conduction pipe (120) includes an inlet pipe (121) and an outlet pipe (122). The inlet pipe (121) is connected to the second end (110b) of the jacket (112) or the inner cylinder (111), and the outlet pipe (122) is connected to the first end (110a) of the jacket (112) or the inner cylinder (111), so that the heat transfer fluid enters from the inlet pipe (121) and is discharged from the outlet pipe (122).
6. The flash-based gas-liquid separation tube according to claim 5, wherein The inlet pipe (121) and the outlet pipe (122) respectively pass through the outer wall of the flash evaporation device (200) and extend to the outside.
7. The flash-based gas-liquid separation tube according to claim 1, characterized in that, The main pipe (110) further includes a sealing ring (114) for sealing the heat conduction cavity (113), and the sealing ring (114) is disposed at the second end (110b) of the inner cylinder (111) and the jacket (112).
8. The flash-based gas-liquid separation tube according to claim 1, wherein It further includes a connecting member (115) for external connection, and the connecting member (115) is disposed at the first end (110a) of the inner cylinder (111) and the jacket (112).
9. The flash-based gas-liquid separation tube according to claim 1, wherein It further includes a support rib plate (116), and the support rib plate (116) is disposed on the outer periphery of the first end (110a) of the jacket (112), and the support rib plate (116) is used to connect to the flash evaporation device (200).
10. A flash evaporation device (200), characterized in that, Comprising: The flash-based gas-liquid separation tube and the tank according to any one of claims 1-9, wherein the first ends (110a) of the inner cylinder (111) and the jacket (112) are respectively connected to the feed port (201) of the tank.