Device and method for forming hydrate by throwing and coating water film on flywheel

Abstract

The invention relates to a device and a method for forming hydrates by throwing and coating a water film on a flywheel, and relates to the technical field of carbon capture. The device comprises a reactor, a motor, a linkage shaft, a flywheel disc, an injection pump and a water collecting tank, the reactor is in a funnel shape, the tip end of the reactor faces downwards, the motor is arranged outside the reactor, and a gas conveying connector is arranged on the reactor and used for introducing flue waste gas into the reactor; the motor, the linkage shaft and the flywheel disc are sequentially connected from top to bottom, the flywheel disc is horizontally arranged in the reactor, the linkage shaft is sleeved with the water collecting tank, the injection pump is communicated to the water collecting tank through a pipeline and used for injecting liquid water into the water collecting tank, and the liquid water flows to the flywheel disc along the linkage shaft. Liquid water is thrown and coated on the inner wall of the reactor by the flywheel disc, and is subjected to hydration reaction with carbon dioxide in the flue waste gas to generate solid hydrate. According to the device and the method, the carbon dioxide in the flue gas can be efficiently captured by utilizing a hydrate method.

Description

Technical Field

[0001] The present application relates to the field of carbon capture technology, and in particular to a device and method for forming hydrates by spraying a water film on a flywheel. Background Art

[0002] Carbon dioxide is an important substance that causes the greenhouse effect. The in-depth development of carbon dioxide capture and sequestration (CCS) technology is of great significance to alleviating climate warming. How to capture and separate carbon dioxide from mixed gases is the premise and basis for reducing carbon dioxide emissions.

[0003] Traditional carbon capture methods include absorption, adsorption, low-temperature separation, metal oxide, membrane separation, etc. Among them, chemical absorption is relatively mature and is suitable for conditions where the carbon dioxide concentration is not high and the pressure is normal. However, the amount of absorbent used is large, and it needs to be replenished during the cycle. The reagent requirements are high, and the regeneration process has high energy consumption. Although the membrane separation method has a simple process and is easy to operate, it has high requirements for the raw gas, and pre-treatment, dehydration and filtration are required, and the purity of the obtained product is not high. Therefore, methods and equipment with high capture efficiency and low capture cost are urgently needed.

[0004] Due to the physical and chemical properties of hydrate structure and gas storage characteristics, the technology of recovering and storing carbon dioxide using gas hydrate method has become an emerging research hotspot in recent years. Compared with traditional separation methods, the separation of carbon dioxide gas from flue gas using hydrate method can greatly reduce the separation cost while effectively improving the separation efficiency. Gas hydrate is a compound composed of water molecules and gas molecules under high pressure and low temperature conditions. Under appropriate low temperature and high pressure conditions, water molecules form cage structures with different shapes and sizes through hydrogen bonding, and different types of gas molecules are trapped in this structure to form gas hydrates. The principle of using hydrate method to separate mixed gases is that the phase equilibrium difference between binary and multi-component gases when forming hydrates is large, so the gas that is easier to form gas hydrates enters the hydrate phase, and the gas that is difficult to form gas hydrates is retained in the gas phase, thereby achieving the separation of mixed gases.

[0005] In the hydrate carbon capture technology, the conditions required for the formation of carbon dioxide hydrates are milder than those for nitrogen hydrates. For example, at 273.15K, the pressure required for the formation of carbon dioxide hydrates is 1.24MPa, while the pressure required for the formation of nitrogen hydrates is 16.3MPa. Therefore, the hydrate method can be applied to the capture of greenhouse gases such as carbon dioxide. In addition, the energy density of gas hydrates is very high. One volume of hydrate can release about 170 volumes of gas under standard conditions. However, the hydrate nucleation process has a random characteristic, and there is a long induction period before nucleation. In addition, the formation of hydrates releases heat. If the generated heat cannot be removed in time, it will inhibit the further formation of hydrates. This means that, in general, the formation efficiency of hydrates is low. When hydrates are formed, the hydrate layer formed at the water-gas interface will significantly reduce the permeability of the gas. Therefore, in the growth stage after the hydrate nucleation, the material transmission capacity of the gas will gradually decrease significantly. This means that, in general, the final energy storage capacity of hydrates is low. Moreover, the hydrates generated under the existing technology are mostly loose snowflakes or hydrate slurries, which occupy most of the growth space and are not conducive to efficient and continuous reaction. Therefore, although gas hydrates have great potential in the capture and storage of carbon dioxide, the conventional hydrate method of carbon capture has problems such as low capture rate and weak gas capture capacity, which limits the commercial application scale of hydrate carbon capture technology. Summary of the invention

[0006] The purpose of the present application is to provide a device and method for forming hydrates by flywheel spinning water film, which can utilize the hydrate method to efficiently capture carbon dioxide in flue exhaust gas.

[0007] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a device for forming hydrates by flywheel-spinning water film, the device comprising a reactor, a motor, a linkage shaft, a flywheel disc, an injection pump, a water collection tank, a first temperature control component and a second temperature control component;

[0008] The reactor is funnel-shaped with the tip facing downwards. The motor is arranged outside the reactor. A gas supply connector is arranged on the reactor, and the gas supply connector is used to introduce flue gas into the reactor.

[0009] The first temperature control component is sleeved on the injection pump, and the second temperature control component is sleeved on the reactor;

[0010] The motor, linkage shaft and flywheel are connected in sequence from top to bottom. The flywheel is horizontally arranged inside the reactor. The water collecting tank is sleeved on the linkage shaft. The injection pump is connected to the water collecting tank through a pipeline. The injection pump is used to inject liquid water into the water collecting tank. The liquid water will flow along the linkage shaft to the flywheel. The flywheel will throw the liquid water onto the inner wall of the reactor and react with the carbon dioxide in the flue gas to generate solid hydrate.

[0011] In an optional embodiment, the reactor is divided into an upper section, a middle section and a lower section from top to bottom, and the flywheel disc is arranged in the interval of the upper section.

[0012] In an optional embodiment, a through hole is opened in the middle of the water collecting tank, the linkage shaft passes through the through hole, and there is a gap between the linkage shaft and the water collecting tank, and the liquid water in the water collecting tank flows to the surface of the linkage shaft through the gap.

[0013] In an optional embodiment, the first temperature control component includes a first temperature control water vest wrapped around the injection pump.

[0014] In an optional embodiment, the second temperature control component includes a second temperature control water vest wrapped around the outer circumference of the reactor, and also includes a third temperature control water vest arranged at the bottom of the tip of the reactor.

[0015] In a second aspect, the present invention provides a method for forming a hydrate by flywheel spraying a water film, the method adopts the device of the aforementioned embodiment, and the method comprises:

[0016] S1: adjusting a first temperature control component outside the injection pump to control the temperature of the liquid water in the injection pump to a preset low temperature condition;

[0017] S2: Inject flue gas into the reactor to reach a preset high pressure condition;

[0018] S3: adjusting the second temperature control component outside the reactor to stabilize the temperature inside the reactor at a preset low temperature condition;

[0019] S4: Start the motor to drive the flywheel to rotate;

[0020] S5: Start the injection pump to inject liquid water into the water collecting tank on the linkage shaft inside the reactor, so as to generate solid hydrate on the inner wall of the reactor.

[0021] In an optional implementation, after S5, the method further includes:

[0022] S6: Reduce the speed of the motor to ensure that the solid hydrate is evenly distributed throughout the reactor.

[0023] In an optional implementation, after S6, the method further includes:

[0024] S7: Add flue gas into the reactor to stabilize the pressure on the inner wall of the reactor at a preset high pressure condition.

[0025] In an optional implementation manner, after S7, the method further includes:

[0026] S8: After the hydration reaction is completed, the temperature of the second temperature control component on the outer peripheral surface of the reactor is increased to make the solid hydrate on the inner wall of the reactor slide down.

[0027] In an optional implementation, after S8, the method further includes:

[0028] The temperature of the second temperature control component at the bottom of the tip of the reactor is lowered to negative temperature to freeze the generated solid hydrate.

[0029] Through the above technical solution, with the help of the huge centrifugal force provided by the high-speed rotating flywheel, the liquid water is thrown around to form a water film, thereby quickly generating hydrates, and in the process, the carbon dioxide in the flue gas is quickly captured and separated. In addition, during the entire hydrate formation reaction process, the water film is spread layer by layer on the inner wall of the reactor. The hydrate converted from the upper layer of water film can induce the rapid nucleation of hydrates in the lower layer of water film, further improving the reaction efficiency. The entire hydrate formation reaction only occurs on the water film, so the final conversion efficiency of liquid water will be further improved, increasing the efficiency of liquid water use.

[0030] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A schematic diagram of the structure of a device for forming hydrates by flywheel-spinning water film provided in an embodiment of the present application.

[0033] Icons: 1-reactor; 2-motor; 3-linkage shaft; 4-flywheel; 5-water collecting tank; 6-liquid water; 7-solid hydrate; 8-injection pump; 91-first temperature-controlled water vest; 92-second temperature-controlled water vest; 93-third temperature-controlled water vest; 10-gas transmission connector. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In traditional hydrate formation methods, the formation reaction is usually carried out in pure water, and it is necessary to use mechanical strengthening and chemical-physical strengthening to increase the contact area between the gas / liquid phases, thereby increasing the solubility of the gas in the liquid phase to accelerate the efficiency of the formation reaction.

[0038] Please refer to Figure 1 This embodiment proposes a device for forming hydrate by applying a water film by a flywheel (hereinafter referred to as the device), in which liquid water 6 is slowly dripped onto the surface of the flywheel disc 4, and then the liquid water 6 is applied to the inner wall of the surrounding reactor 1 by means of the huge centrifugal force generated by the high-speed rotation of the flywheel disc 4. The liquid water 6 that is thrown out will form a layer of liquid film on the inner wall of the reactor 1 under the action of gravity, thereby forming a huge gas / liquid contact surface. At this time, the carbon dioxide in the reactor 1 will quickly dissolve in this layer of water film under high pressure conditions, and quickly undergo hydration reaction to generate solid hydrate 7. As the reaction of generating solid hydrate 7 continues, the carbon dioxide in the flue gas introduced into the reactor 1 will be continuously captured and separated by the solid hydrate 7. The solid hydrate 7 is quickly generated by the method of applying a water film by the high-speed rotating flywheel disc 4, and finally the purpose of efficiently capturing and separating carbon dioxide from the flue gas is achieved.

[0039] Specifically, the device includes a reactor 1, a motor 2, a linkage shaft 3, a flywheel 4, an injection pump 8, a water collection tank 5, a first temperature control component and a second temperature control component.

[0040] The reactor 1 is funnel-shaped with the tip facing downward. The reactor 1 is made of high-pressure resistant material and can withstand a gas pressure of ≤15Mpa. The motor 2 is arranged outside the reactor 1. The reactor 1 is provided with a gas supply connector 10, which is used to introduce flue gas into the reactor 1.

[0041] The motor 2, the linkage shaft 3 and the flywheel 4 are connected in sequence from top to bottom. The flywheel 4 is horizontally arranged inside the reactor 1. The reactor 1 is divided into an upper section, a middle section and a lower section from top to bottom. The flywheel 4 is arranged in the interval of the upper section.

[0042] The water collecting tank 5 is sleeved on the linkage shaft 3, and the injection pump 8 is connected to the water collecting tank 5 through a pipeline. The injection pump 8 is used to inject liquid water 6 into the water collecting tank 5, and the liquid water 6 will flow along the linkage shaft 3 to the flywheel 4, wherein a through hole is opened in the middle of the water collecting tank 5, and the linkage shaft 3 passes through the through hole, and there is a gap between the water collecting tank 5, and the liquid water 6 in the water collecting tank 5 flows to the surface of the linkage shaft 3 through the gap.

[0043] The liquid water 6 is spun onto the inner wall of the reactor 1 by the flywheel 4 and undergoes a hydration reaction with the carbon dioxide in the flue gas to generate a solid hydrate 7.

[0044] The first temperature control component is sleeved on the injection pump 8, and the second temperature control component is sleeved on the reactor 1. Specifically, the first temperature control component can be a first temperature control water vest 91 wrapped around the injection pump 8, and the second temperature control component includes a second temperature control water vest 92 wrapped around the outer peripheral surface of the reactor 1, and also includes a third temperature control water vest 93 arranged at the bottom of the tip of the reactor 1.

[0045] The working process of the device is as follows: first, the flue gas is filled into the reactor 1; then, liquid water 6 is slowly dripped into the upper part of the flywheel disc 4 in the reactor 1 through the injection pump 8. The injection pump 8 is wrapped with a first temperature-controlled water vest 91 on the outside to control the injected liquid water 6 to be at a low temperature of 0°C. When the liquid water 6 is injected into the reactor 1, it will quickly absorb the reaction heat released by the hydration reaction, which is beneficial to keep the ongoing hydration reaction at a lower temperature and keep the ongoing hydration reaction at a higher reaction efficiency (because the hydration reaction has a higher reaction efficiency under a lower temperature environment, and the reaction efficiency will decrease if the temperature is too high). The liquid water 6 that absorbs the reaction heat can also participate in the hydration reaction normally because the temperature increase is small due to the large amount of liquid water entering, thereby effectively improving the efficiency of the entire hydration reaction process; then, the motor 2 outside the reactor 1 is started to drive the internal flywheel disc 4 to rotate at a high speed. During the rotation of the flywheel disc 4, the liquid water 6 dripping on its surface is quickly sprinkled around the reactor 1. The inner wall of the reactor 1 forms a water film, at which time the carbon dioxide in the flue gas will quickly dissolve in the water film and be converted into solid hydrate 7; thereafter, as the liquid water 6 is continuously thrown toward the inner wall of the reactor 1, the solid hydrate 7 will be formed layer by layer inside the reactor 1. In this process, the speed of the motor 2 can be adjusted to adjust the rate of throwing the liquid water 6, thereby adjusting the thickness of the solid hydrate 7 on the inner wall of the reactor 1. Specifically, the speed of the motor 2 can be adjusted to gradually decrease, and the flywheel 4 can be controlled to throw the liquid water 6 to the upper section, the middle section and the lower section in turn, so that the finally formed solid hydrate 7 is evenly distributed inside the entire reactor 1. This process can not only absorb the reaction heat in the reactor 1 through the newly introduced liquid water 6, so that the hydration reaction is maintained at a high reaction efficiency, but also because the inner surface of the reactor 1 has a large area for the solid hydrate 7 to adhere to, the capacity of the solid hydrate 7 can be significantly increased, thereby improving the generation efficiency of the solid hydrate 7 generated by the device. Finally, when the hydration reaction is finally completed, solid hydrate 7 will be mounted on the inner wall of the reactor 1. At this time, the temperature of the second temperature-controlled water vest 92 around the outside of the reactor 1 is regulated to slightly increase the temperature of the outer wall of the reactor 1 to partially decompose the solid hydrate 7 mounted around the inside. At this time, the solid hydrate 7 will slip off the inner wall of the reactor 1 over a large area and gather at the bottom of the reactor 1 under the action of gravity, thereby facilitating the subsequent efficient removal and collection from the inside of the reactor 1.

[0046] This embodiment also provides a method for forming hydrates by flywheel spinning water film (hereinafter referred to as: method), which is implemented by the above-mentioned device and includes the following steps:

[0047] Step 1: Inject liquid water 6 required for the reaction into the injection pump 8.

[0048] Step 2: Adjust the first temperature-control water vest 91 outside the injection pump 8 to control the temperature of the liquid water 6 in the injection pump 8 to a preset low temperature condition, wherein the preset low temperature condition may be 0-3°C.

[0049] Step 3: Inject flue gas into the reactor 1 and reach a preset high pressure condition, wherein the preset high pressure condition may be 8 MPa.

[0050] Step 4: Adjust the second temperature-controlled water vest 92 outside the reactor 1 to stabilize the internal temperature of the reactor 1 at a preset low temperature condition, wherein the preset low temperature condition can be 1-5°C. During the actual reaction process, the first temperature-controlled water vest 91 can be used to make the temperature of the liquid water 6 entering the reactor 1 lower than the preset low temperature condition required by the reactor 1, so that the liquid water 6 entering the reactor 1 absorbs the reaction heat of the reactor 1 and slightly heats up. The reaction heat in the reactor 1 is consumed in time, so that the internal temperature of the reactor 1 is stabilized at the preset low temperature condition.

[0051] Step 5: Start the motor 2 to drive the flywheel 4 to rotate.

[0052] Step 6: Start the injection pump 8 to inject liquid water 6 into the water collecting tank 5 on the linkage shaft 3 inside the reactor 1. The liquid water 6 is sprinkled onto the inner wall of the reactor 1 and reacts with the carbon dioxide in the flue gas to generate solid hydrate 7.

[0053] There is a gap between the water collecting tank 5 and the linkage shaft 3, so the liquid water 6 injected into the water collecting tank 5 will slowly flow down along the linkage shaft 3 to the surface of the flywheel disc 4 under the action of gravity. At this time, driven by the motor 2, the liquid water 6 on the surface of the flywheel disc 4 will be thrown around under the action of centrifugal force and coated on the inner walls of the reactor 1. At this time, the liquid water 6 thrown will slowly flow down along the inner wall of the reactor 1 under the action of gravity, and will flow on the inner wall to form a thin water film in the process.

[0054] The internal environment of the reactor 1 is in a preset low temperature condition under the action of the second temperature-controlled water vest 92. Therefore, when the liquid water 6 on the flywheel disc 4 is sprinkled on the inner wall of the reactor 1 and flows along the wall to form a water film, the carbon dioxide in the flue gas will quickly dissolve in the water film and quickly convert into solid hydrate 7 under the preset low temperature condition and the preset high pressure condition.

[0055] Step 7: Reduce the rotation speed of the motor 2 so that the solid hydrate 7 is evenly distributed throughout the reactor 1 .

[0056] Specifically, when the speed of the motor 2 is maintained at a high speed for a period of time, the solid hydrate 7 will accumulate in large quantities in the upper section of the reactor 1. At this time, in order to further effectively utilize the middle and lower sections of the reactor 1, the speed of the motor 2 can be lowered. As the speed of the motor 2 decreases, the effective centrifugal force it can provide weakens, the thickness of the liquid water 6 thrown by the flywheel 4 will become thicker and the effective spreading distance will be shortened. At this time, the liquid water 6 thrown by the flywheel 4 will quickly sink to the middle and lower sections of the reactor 1 under the action of gravity, so that the solid hydrate 7 inside the reactor 1 is formed in the middle and lower sections of the reactor 1, and the solid hydrate 7 finally formed is evenly distributed inside the entire reactor 1, so as to achieve the purpose of fully utilizing the effective volume inside the reactor 1.

[0057] Step 8: Add flue gas to the reactor 1.

[0058] As the hydration reaction continues, the carbon dioxide inside the reactor 1 is continuously consumed, and the pressure inside the reactor 1 drops significantly. At this time, flue gas can be added to the reactor 1 to maintain its internal pressure stable at a preset high pressure condition.

[0059] Step 9: After the hydration reaction is completed, the temperature of the second temperature-controlled water vest 92 on the outer peripheral surface of the reactor 1 is increased to make the solid hydrate 7 on the inner wall of the reactor 1 slide down.

[0060] Specifically, after the entire hydration reaction process is completed, a large amount of solid hydrates will be covered on the inner wall of the reactor 1. At this time, while keeping the internal pressure conditions of the reactor 1 unchanged, the temperature of the second temperature-controlled water vest 92 on the outer peripheral surface of the reactor 1 is increased to cause the solid hydrates 7 covering the inner wall to be partially decomposed. At this time, the solid hydrates 7 will slide down along the inner wall of the reactor 1 and gather at the bottom of the reactor 1 to facilitate the removal and collection of the solid hydrates 7.

[0061] Step 10: Lower the temperature of the third temperature-controlled water vest 93 at the bottom of the tip of the reactor 1 to negative temperature, wherein the negative temperature may be -10°C, to freeze the generated solid hydrate 7 so that the solid hydrate 7 can maintain a stable state under normal pressure.

[0062] Step 11: Open the bottom of the reactor 1 and take out the solid hydrate 7.

[0063] Specifically, after the solid hydrate 7 is fully frozen at the bottom of the reactor 1, the pressure in the reactor 1 is reduced to atmospheric pressure, the bottom of the reactor 1 is opened, the solid hydrate 7 is taken out, and the next step of storage and utilization is carried out.

[0064] The inventive principle of the device and method provided in this embodiment is as follows: during the process of liquid water 6 being thrown out by the high-speed rotating flywheel 4, a water film will be formed under the action of centrifugal force. After the water film is sprinkled on the inner wall of the reactor 1, it will continue to flow downward in the form of a water film under the action of gravity. In the process of liquid water 6 being continuously sprinkled to form a water film, the temperature inside the reactor 1 is continuously reduced, thereby improving the heat exchange efficiency inside the reactor 1 and further promoting the hydration reaction. Under the preset high pressure conditions and the preset low temperature conditions, the contact area of ​​the gas / liquid phase can be effectively increased, thereby allowing the gas to diffuse and dissolve rapidly into the water film, and a hydration reaction occurs on the water film, which can greatly improve the efficiency of the hydrate formation reaction, thereby achieving rapid formation of solid hydrates 7, and achieving the purpose of capturing and separating carbon dioxide from flue gas by the hydrate method.

[0065] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0066] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for forming hydrates by flywheel spraying water film, characterized in that: The device comprises a reactor (1), a motor (2), a linkage shaft (3), a flywheel disc (4), an injection pump (8), a water collecting tank (5), a first temperature control component and a second temperature control component; The reactor (1) is funnel-shaped with its tip facing downwards; the motor (2) is arranged outside the reactor (1); a gas supply connector (10) is arranged on the reactor (1); the gas supply connector (10) is used to introduce flue gas into the reactor (1); The first temperature control component is sleeved on the injection pump (8), and the second temperature control component is sleeved on the reactor (1); The motor (2), the linkage shaft (3) and the flywheel (4) are connected in sequence from top to bottom; the flywheel (4) is horizontally arranged inside the reactor (1); the water collecting tank (5) is sleeved on the linkage shaft (3); the injection pump (8) is connected to the water collecting tank (5) through a pipeline; the injection pump (8) is used to inject liquid water (6) into the water collecting tank (5); the liquid water (6) flows along the linkage shaft (3) to the flywheel (4); the flywheel (4) spreads the liquid water (6) onto the inner wall of the reactor (1) and reacts with the carbon dioxide in the flue gas to generate solid hydrate (7); The reactor (1) is divided into an upper section, a middle section and a lower section from top to bottom. The flywheel (4) is arranged in the interval of the upper section. The rotation speed of the motor (2) is regulated to gradually decrease, and the flywheel (4) can be controlled to successively throw the liquid water (6) to the upper section, the middle section and the lower section, so that the solid hydrate (7) finally formed is evenly distributed inside the entire reactor (1).

2. The device for forming hydrate by flywheel spraying water film according to claim 1, characterized in that: A through hole is provided in the middle of the water collecting trough (5), the linkage shaft (3) passes through the through hole, and a gap exists between the linkage shaft (3) and the water collecting trough (5), and the liquid water (6) in the water collecting trough (5) flows through the gap to the surface of the linkage shaft (3).

3. The device for forming hydrate by flywheel spraying water film according to claim 1, characterized in that: The first temperature control component comprises a first temperature control water vest (91) wound around the injection pump (8).

4. The device for forming hydrate by flywheel spraying water film according to claim 1, characterized in that: The second temperature control component comprises a second temperature control water vest (92) wound around the outer peripheral surface of the reactor (1), and also comprises a third temperature control water vest (93) arranged at the bottom of the tip of the reactor (1).

5. A method for forming hydrates by flywheel coating of water film, characterized in that: The method adopts the device of claim 1, and the method comprises: S1: adjusting a first temperature control component outside the injection pump (8) to control the temperature of the liquid water (6) in the injection pump (8) to a preset low temperature condition; S2: injecting flue gas into the reactor (1) to reach a preset high pressure condition; S3: adjusting the second temperature control component outside the reactor (1) so that the internal temperature of the reactor (1) is stabilized at a preset low temperature condition; S4: starting the motor (2) to drive the flywheel (4) to rotate; S5: Start the injection pump (8) to inject liquid water (6) into the water collecting tank (5) on the linkage shaft (3) inside the reactor (1), thereby generating solid hydrate (7) on the inner wall of the reactor (1).

6. The method for forming hydrate by flywheel coating water film according to claim 5, characterized in that: After S5, the method further includes: S6: reducing the rotation speed of the motor (2) so that the solid hydrate (7) is evenly distributed throughout the reactor (1).

7. The method for forming hydrate by flywheel coating water film according to claim 6, characterized in that: After S6, the method further includes: S7: Add flue gas to the reactor (1) to stabilize the pressure on the inner wall of the reactor (1) at a preset high pressure condition.

8. The method for forming hydrate by flywheel coating water film according to claim 7, characterized in that: After S7, the method further includes: S8: After the hydration reaction is completed, the temperature of the second temperature control component on the outer peripheral surface of the reactor (1) is increased to allow the solid hydrate (7) on the inner wall of the reactor (1) to slide down.

9. The method for forming hydrate by flywheel coating water film according to claim 8, characterized in that: After S8, the method further includes: The temperature of the second temperature control component at the bottom of the tip of the reactor (1) is lowered to negative temperature to freeze the generated solid hydrate (7).

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