Liquid-to-gas phase conversion device
Through the liquid-to-gas phase conversion device, the liquid branching agent is converted to gaseous state, which solves the problem of slow reaction between liquid branching agent and rare earth butadiene rubber, and improves the reaction efficiency and product quality of the preparation of rare earth butadiene rubber.
Patent Information
- Application Number
- CN202422219592.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The reaction between liquid branching agent and rare earth butadiene rubber is slow, resulting in the impact of the reaction efficiency and product quality of the preparation of rare earth butadiene rubber.
Using a liquid-to-gas phase conversion device, the liquid branching agent is converted into a gaseous state through a heating kettle, and the rapid diffusion and reaction of the branching agent is achieved by using the gas pressure difference.
Through the liquid-to-gas phase conversion device, the reaction efficiency and product quality of rare earth butadiene rubber preparation are significantly improved, and the reaction efficiency and product quality requirements of rare earth butadiene rubber preparation are met.
Smart Images
Figure CN222998764U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical refining, in particular to a phase conversion device for liquid-to-gas conversion. Background Art
[0002] Polybutadiene rubber is the second largest synthetic rubber after styrene-butadiene rubber in terms of output, and is generally prepared by using catalysts such as nickel-based, cobalt-based, titanium-based, lithium-based, rare earth-based, molybdenum-based, and iron-based catalysts. The above different catalysts can synthesize polybutadiene rubbers with different structures, such as rare earth cis-polybutadiene rubber, syndiotactic 1,2-polybutadiene rubber, low cis-polybutadiene rubber, high vinyl polybutadiene rubber, and liquid polybutadiene rubber, etc.
[0003] Among them, rare earth cis-polybutadiene rubber has characteristics such as higher molecular weight, structural regularity, high linearity, narrow molecular weight distribution, and adjustable Mooney viscosity ML100℃(1+4), making it have excellent flex fatigue resistance, wear resistance, low rolling resistance, better green strength and vulcanizate properties, meeting the requirements of high-speed driving of automobiles, and being widely used in tire treads and sidewall rubbers, and is a key rubber type for preparing high-performance green tires.
[0004] However, due to the too high linear degree of the molecular chain of rare earth cis-polybutadiene rubber, the viscosity of its rubber solution and the conveying difficulty are relatively large, and the rubber mixing and processing are relatively difficult. Therefore, it is necessary to introduce a branched structure into the rare earth rubber molecular chain, that is, to introduce a branched structure by adding a branching modifier during the preparation of rare earth cis-polybutadiene rubber. On the one hand, it reduces the hydrodynamic volume of the rare earth rubber molecular chain in the solution, thereby reducing the viscosity of its rubber solution; on the other hand, it improves its mixing and processing performance, making it easier to take in materials and having better filler dispersion, thereby significantly reducing the Mooney viscosity of its mixed rubber; thirdly, introducing a branched structure endows rare earth rubber with higher cold flow resistance, which is convenient for storage and transportation.
[0005] The branching modifier is generally in a liquid state, and the reaction between the liquid branching agent and rare earth cis-polybutadiene rubber is often slow, and it often takes a long time for the branching agent to diffuse into the rare earth rubber molecular chain, which seriously affects the reaction efficiency and product quality of the preparation of rare earth cis-polybutadiene rubber. While the gaseous branching agent diffuses into the rare earth rubber molecular chain relatively quickly, which can meet the requirements of the reaction efficiency and product quality of the preparation of rare earth cis-polybutadiene rubber, but there are often no ready-made industrial products of the gaseous branching agent. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a phase conversion device for liquid-to-gas conversion, which converts the liquid branching agent into a gaseous state, and solves the problems that the reaction between the liquid branching agent and rare earth cis-polybutadiene rubber is often slow, and it often takes a long time for the branching agent to diffuse into the rare earth rubber molecular chain, which seriously affects the reaction efficiency and product quality of the preparation of rare earth cis-polybutadiene rubber.
[0007] The object of the present utility model is achieved by the following technical solutions:
[0008] The present utility model provides a phase conversion device for liquid-to-gas conversion, comprising:
[0009] A feeding tank having a top and a bottom oppositely arranged in the height direction; a feeding port for feeding a liquid-phase product and an air inlet for connecting to a nitrogen source are provided at the top of the feeding tank; and
[0010] A heating kettle having a top and a bottom oppositely arranged in the height direction; the heating kettle is located below the feeding tank and is used for heating the liquid-phase product into a gas-phase product;
[0011] The bottom of the feeding tank and the top of the heating kettle are connected through a first pipeline, and a first regulating valve is arranged on the first pipeline;
[0012] The top of the feeding tank and the top of the heating kettle are connected through a second pipeline, and a second regulating valve is arranged on the second pipeline.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: Nitrogen is injected into the feeding tank through a nitrogen source. Under the connection action of the second pipeline, the air pressures in the feeding tank and the heating kettle are equalized. The air flow rate is adjusted through the second regulating valve, so that the liquid branching agent enters the first pipeline under the action of the air pressure difference; the flow rate of the liquid branching agent in the first pipeline is adjusted through the first regulating valve and enters the heating kettle to complete heating, realizing the conversion of the branching agent from liquid to gas. By controlling the flow rates of the liquid and gas, the conversion rate of liquid-to-gas conversion is controlled, and a gaseous branching agent required for the preparation of rare earth cis-1,4-polybutadiene rubber is provided.
[0014] In some embodiments, a third pipeline is further included. One end of the third pipeline is connected to the top of the heating kettle, and the other end of the third pipeline is connected to a reaction kettle; the gas-phase product can enter the reaction kettle through the third pipeline.
[0015] In some possible embodiments, a third regulating valve is arranged on the third pipeline.
[0016] In some possible embodiments, a discharging valve is arranged at the bottom of the heating kettle.
[0017] In some possible embodiments, a fourth pipeline is further included. The discharging valve has a discharging port. One end of the fourth pipeline is connected to the discharging port, the other end of the fourth pipeline is connected to a first collecting tank, and a first on-off valve is arranged on the fourth pipeline.
[0018] In some possible embodiments, a second on-off valve is further arranged on the first pipeline between the first regulating valve and the bottom of the feeding tank.
[0019] In some possible embodiments, it further includes:
[0020] A fifth pipeline, one end of the fifth pipeline is communicated with the top of the heating kettle, and the other end of the fifth pipeline is communicated with the second collection tank;
[0021] A third on-off valve is arranged on the fifth pipeline near the top of the heating kettle and a fourth on-off valve is arranged near the second collection tank; and
[0022] A sixth pipeline, one end of the sixth pipeline is communicated with the fifth pipeline between the third on-off valve and the fourth on-off valve; the other end of the sixth pipeline is communicated with the fourth pipeline between the first on-off valve and the discharging port;
[0023] A fifth on-off valve is arranged on the sixth pipeline.
[0024] In some possible embodiments, it further includes:
[0025] A housing, having a top and a bottom oppositely arranged along the height direction, a heating port is opened at the bottom of the housing; the heating kettle is embedded in the housing, the top of the heating kettle is connected with the top of the housing, and the bottom of the heating kettle is located above the bottom of the housing;
[0026] A cavity is formed between the outer wall of the heating kettle and the inner wall of the housing, and heating oil can be arranged in the cavity; and
[0027] An electric heating component, including an electric heating rod and internal and external nuts, the electric heating rod is in internal thread connection with the internal and external nuts; the bottom of the housing is in external thread connection with the internal and external nuts through the heating port, and the electric heating rod is located in the cavity.
[0028] In some possible embodiments, it further includes a temperature measuring component, and the temperature measuring component includes a thermometer and a jacket for clamping and fixing the thermometer;
[0029] A temperature measuring port is arranged at the bottom of the housing, and the bottom of the housing is in thread connection with the jacket through the temperature measuring port; and / or,
[0030] A sewage discharge port is further opened at the bottom of the housing.
[0031] In some possible embodiments, the housing has a first side wall and a second side wall oppositely arranged, an overflow port is opened on the first side wall of the housing; a fuel filling port is opened on the second side wall of the housing, the second side wall is communicated with one end of a fuel filling pipe through the fuel filling port, and the other end of the fuel filling pipe is communicated with an expander; the height of the overflow port is higher than the height of the fuel filling port. Description of the Drawings
[0032] Figure 1 It is a schematic structural diagram of a phase conversion device for liquid-to-gas conversion according to an embodiment of the present utility model;
[0033] Figure 2 It is a schematic top view structure diagram of a feeding tank according to an embodiment of the present utility model.
[0034] Reference numerals: 1, feeding tank; 2, heating kettle; 3, first pipeline; 4, first regulating valve; 5, second pipeline; 6, second regulating valve; 7, third pipeline; 8, third regulating valve; 9, discharging valve; 91, discharging port; 10, fourth pipeline; 11, first on-off valve; 12, second on-off valve; 13, fifth pipeline; 14, third on-off valve; 15, fourth on-off valve; 16, sixth pipeline; 17, fifth on-off valve; 18, housing; 181, cavity; 182, first side wall; 183, second side wall; 184, sewage discharge port; 19, electric heating component; 191, electric heating rod; 192, internal and external nuts; 20, temperature measuring component; 201, jacket; 202, thermometer; 21, oil filling pipe; 22, expander; 23, capacitance type liquid level gauge; 24, moving platform; 25, telescopic bracket; 26, spray head; 100, feed inlet; 200, air inlet; 300, isobaric port; 400, exhaust port. Detailed implementation manners
[0035] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; on the contrary, these embodiments are provided so that the present utility model will be more complete and comprehensive, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. Identical reference numerals in the figures denote identical or similar structures, and thus their repeated description will be omitted.
[0036] The words expressing positions and directions described in the present utility model are all illustrated with reference to the accompanying drawings, but can be changed according to needs, and all the changes made are included in the protection scope of the present utility model.
[0037] Please refer to Figure 1 and Figure 2 , the present utility model provides a phase conversion device for liquid-to-gas conversion, including a feeding tank 1, a heating kettle 2, a first pipeline 3, a first regulating valve 4, a second pipeline 5 and a second regulating valve 6.
[0038] The feeding tank 1 has a top and a bottom oppositely arranged in the height direction. The top of the feeding tank 1 is provided with a feed inlet 100 for feeding liquid-phase products and an air inlet 200 for connecting to a nitrogen source.
[0039] Among them, the liquid-phase product can be a branching agent. In this embodiment, the branching agent can be sulfur dichloride, also known as sulfur monochloride, which is an inorganic compound with the chemical formula S2Cl2 and is a yellow to slightly red liquid.
[0040] The nitrogen source is used to supply nitrogen to the feeding tank 1, serving as a pressure boost to increase the internal pressure of the feeding tank 1, and through the action of air pressure, the branching agent in the feeding tank 1 is sent into the heating kettle 2.
[0041] It should be added that a capacitive liquid level gauge 23 is also provided in the feeding tank 1 for measuring the liquid level height of the branching agent in the feeding tank 1.
[0042] The heating kettle 2 has a top and a bottom oppositely arranged in the height direction. The heating kettle 2 is located below the feeding tank 1 and is used to heat the liquid-phase product into a gas-phase product. That is, the sulfur dichloride branching agent is converted from a liquid phase to a gas phase through the heating of the heating kettle 2.
[0043] It should be noted that the boiling point of sulfur dichloride is about 138°C. In this embodiment, the heating temperature of the heating kettle 2 needs to reach 138°C or above to vaporize the liquid sulfur dichloride.
[0044] The bottom of the feeding tank 1 and the top of the heating kettle 2 are connected through a first pipeline 3, and a first regulating valve 4 is provided on the first pipeline 3. In this embodiment, the first regulating valve 4 is preferably a fine-tuning valve. The requirement of the fine-tuning valve is that the valve opening gradually becomes larger, and it can continuously and finely adjust from being closed to being fully opened, which ensures the smoothness and controllability of the flow of the branching agent.
[0045] The flow rate of the branching agent entering the heating kettle 2 through the first pipeline 3 is precisely adjusted through the fine-tuning valve, so that the branching agent in the first pipeline 3 enters the heating kettle 2 under the condition of controllable flow rate.
[0046] The top of the feeding tank 1 and the top of the heating kettle 2 are connected through a second pipeline 5. Specifically, an equal-pressure port 300 is provided at the top of the feeding tank 1. One end of the second pipeline 5 is connected to the equal-pressure port 300, and the other end is connected to the top of the heating kettle 2. A second regulating valve 6 is provided on the second pipeline 5. In this embodiment, the second regulating valve 6 is preferably a needle valve. The valve core of the needle valve is designed as a very sharp cone, which is inserted into the valve seat like a needle. This design enables the needle valve to withstand a large pressure and has good sealing performance. Therefore, the needle valve is particularly suitable for sealing occasions where small flow rates and high pressures of gas or liquid media are required.
[0047] The specific functions of the needle valve include: Flow control: By adjusting the position of the needle rod, the needle valve can precisely control the flow rate of the fluid. Since the movement range of its needle rod is very small, very precise flow control can be achieved. Pressure control: By adjusting the valve opening, the needle valve can control the pressure change of the liquid or gas to meet specific fluid pressure requirements. Fluid direction control: The needle valve can also control the flow direction of the liquid or gas to meet specific process requirements.
[0048] Based on this, the gas flow rate in the feeding tank 1 and the heating kettle 2 is precisely adjusted through the needle valve, so that the air pressure in the feeding tank 1 is greater than the air pressure in the heating kettle 2, enabling the branching agent in the feeding tank 1 to smoothly enter the heating kettle 2 through the first pipeline 3 under the action of the air pressure difference. The heating kettle 2 converts the branching agent from liquid state to gaseous state by heating.
[0049] Nitrogen is injected into the feeding tank 1 through the nitrogen source. Under the connection action of the second pipeline 5, the air pressures in the feeding tank and the heating kettle 2 are equalized. The gas flow rate is adjusted through the second regulating valve 6, enabling the liquid branching agent to enter the first pipeline 3 under the action of the air pressure difference; the flow rate of the liquid branching agent in the first pipeline 3 is adjusted through the first regulating valve 4, enabling the liquid branching agent to enter the heating kettle 2 to complete heating, and realizing the conversion of the branching agent from liquid state to gaseous state. By controlling the flow rates of the liquid and gas states, the conversion rate of liquid to gas is controlled, providing the gaseous branching agent required for the preparation of rare earth cis-1,4-polybutadiene rubber.
[0050] In some embodiments, one end of the first pipeline 3 is connected with a spray head 26. The spray head 26 is located inside the heating kettle 2 and close to the top of the heating kettle 2. The form of the branching agent entering the heating kettle 2 can be adjusted through the industrial spray head 26, increasing the overheating area and improving the gasification efficiency.
[0051] In some embodiments, the phase conversion device further includes a third pipeline 7.
[0052] One end of the third pipeline 7 is communicated with the top of the heating kettle 2, and the other end of the third pipeline 7 is communicated with a reaction kettle (not shown in the figure); the gaseous branching agent can enter the reaction kettle through the third pipeline 7.
[0053] After the branching agent is converted from liquid state to gaseous state, it directly enters the reaction kettle for the preparation of rare earth cis-1,4-polybutadiene rubber through the third pipeline 7, realizing the continuity of the chemical reaction, specifically reflected in the uninterruptedness and high efficiency in the preparation process of rare earth cis-1,4-polybutadiene rubber. Compared with batch production, the continuous reaction process can significantly improve the preparation speed of rare earth cis-1,4-polybutadiene rubber.
[0054] The continuity of the chemical reaction enables rare earth cis-1,4-polybutadiene rubber to have the advantages of constant reaction conditions and stable product quality during the preparation process, realizing the continuousization of the preparation process. It improves the production efficiency of rare earth cis-1,4-polybutadiene rubber, reduces the production cost, and also significantly shortens the production cycle.
[0055] In some embodiments, a third regulating valve 8 is provided on the third pipeline 7.
[0056] The addition amount of the gaseous branching agent entering the reaction kettle is controlled by the third regulating valve 8, so that the branching agent meets the process requirements in the preparation process of rare earth cis-1,4-polybutadiene rubber.
[0057] In some embodiments, a discharge valve 9 is provided at the bottom of the heating kettle 2. In this embodiment, a downward-opening discharge valve 9 is preferably used, which is used for discharging materials from the bottom of the heating kettle 2 to eliminate the residual phenomenon of process media such as branching agent at the bottom of the heating kettle 2.
[0058] It should be further noted that the discharge valve 9 has a discharge port 91, and the discharge valve 9 discharges the materials in the heating kettle 2 through the discharge port 91.
[0059] In some embodiments, the phase conversion device further includes a fourth pipeline 10, and an emptying port 400 for cleaning liquid feeding is further provided at the top of the feeding tank 1. One end of the fourth pipeline 10 is communicated with the discharge port 91, the other end of the fourth pipeline 10 is communicated with a first collection tank (not shown in the figure), and a first on-off valve 11 is provided on the fourth pipeline 10.
[0060] After the preparation of rare earth cis-1,4-polybutadiene rubber is completed, at this time, the third regulating valve 8 is closed. After the branching agent is converted from liquid to gas in the heating kettle 2, generally, there will be some liquid branching agent remaining in the heating kettle 2. The cleaning liquid is added into the feeding tank 1 through the emptying port 400, the air pressure is regulated by the second regulating valve 6, so that the cleaning liquid enters the first pipeline 3, enters the heating kettle 2 through the spray head 26 to clean the inside of the heating kettle 2. The cleaning liquid and the liquid branching agent form a mixed liquid. The discharge valve 9 is opened, and the mixed liquid enters the fourth pipeline 10 through the discharge port 91. The on-off of the fourth pipeline 10 is controlled by the first on-off valve 11, so that the mixed liquid can enter the first collection tank through the fourth pipeline 10 for collection, realizing the liquid cleaning of the heating kettle 2.
[0061] In some embodiments, a second on-off valve 12 is further provided on the first pipeline 3 between the first regulating valve 4 and the bottom of the feeding tank 1.
[0062] By controlling the on-off of the first pipeline 3 through the second on-off valve 12, the first pipeline 3 connecting the feeding tank 1 and the heating kettle 2 can be quickly cut off or connected, meeting the usage requirements of quick response.
[0063] In some embodiments, the phase conversion device further includes a fifth pipeline 13, a sixth pipeline 16, a third on-off valve 14, a fourth on-off valve 15 and a fifth on-off valve 17.
[0064] One end of the fifth pipeline 13 communicates with the top of the heating kettle 2, and the other end of the fifth pipeline 13 communicates with a second collection tank (not shown in the figure). A third on-off valve 14 close to the top of the heating kettle 2 and a fourth on-off valve 15 close to the second collection tank are provided on the fifth pipeline 13.
[0065] One end of the sixth pipeline 16 communicates with the fifth pipeline 13 between the third on-off valve 14 and the fourth on-off valve 15; the other end of the sixth pipeline 16 communicates with the fourth pipeline 10 between the first on-off valve 11 and the discharge port 91; a fifth on-off valve 17 is provided on the sixth pipeline 16.
[0066] Continuing from the above, after the branching agent is converted from a liquid state to a gaseous state in the heating kettle 2, not only is there some residual liquid branching agent, but there is also gaseous branching agent remaining in the heating kettle 2. The nitrogen source passes nitrogen into the feeding tank 1 through the air inlet 200. At this time, the first regulating valve 4 and the second on-off valve 12 are opened, the second regulating valve 6 is opened, the fourth on-off valve 15 and the fifth on-off valve 17 are opened, and the third on-off valve 14 is closed. Nitrogen enters the heating kettle 2 through the first pipeline 3 to conduct air blowing and cleaning inside the heating kettle 2. The nitrogen and the gaseous branching agent form a mixed gas. The discharge valve 9 is opened, and the mixed gas passes through the discharge port 91 and successively flows through the fourth pipeline 10, the sixth pipeline 16, and the fifth pipeline 13 into the second collection tank for collection, realizing the gaseous cleaning of the heating kettle 2.
[0067] In some embodiments, the phase conversion device further includes a housing 18 and an electric heating component 19.
[0068] The housing 18 has a top and a bottom oppositely arranged in the height direction, and a heating port is opened at the bottom of the housing 18; the heating kettle 2 is embedded in the housing 18, the top of the heating kettle 2 is connected to the top of the housing 18, and the bottom of the heating kettle 2 is located above the bottom of the housing 18.
[0069] A cavity 181 is formed between the outer wall of the heating kettle 2 and the inner wall of the housing 18, and heating oil can be provided in the cavity 181.
[0070] The electric heating component 19 includes an electric heating rod 191 and an internal and external nut 192. The electric heating rod 191 is threadedly connected to the internal thread of the internal and external nut 192; the bottom of the housing 18 is threadedly connected to the external thread of the internal and external nut 192 through the heating port, and the electric heating rod 191 is located in the cavity 181.
[0071] The electric heating rod 191 is used to heat the heating oil, and the heating of the heating kettle 2 is realized by means of oil bath heating, so as to convert the liquid branching agent into a gaseous state. Oil bath heating can achieve high-precision control of the temperature and avoid the problem of temperature instability caused by thermal fluctuations in the traditional heating method.
[0072] Moreover, the heating rate of oil bath heating is relatively fast, reaching 250 °C per minute. This not only improves the heating efficiency but also reduces the incidence of risks such as decomposition and explosion in high-temperature chemical reactions.
[0073] In some embodiments, the phase conversion device further includes a temperature measuring assembly 20, and the temperature measuring assembly 20 includes a thermometer 202 and a jacket 201 for clamping and fixing the thermometer 202.
[0074] A temperature measuring port is provided at the bottom of the housing 18, and the bottom of the housing 18 is threadedly connected to the jacket 201 through the temperature measuring port.
[0075] The temperature of the heating oil is monitored in real time through the thermometer 202, enabling the staff to fully grasp the change in the oil temperature. The jacket 201 is used to seal the cavity 181.
[0076] Furthermore, a sewage discharge port 184 is also provided at the bottom of the housing 18. The sewage discharge port 184 is used to discharge the heating oil in the cavity 181.
[0077] In some embodiments, the housing 18 has a first side wall 182 and a second side wall 183 which are oppositely arranged. An overflow port is provided on the first side wall 182 of the housing 18; a fuel filling port is provided on the second side wall 183 of the housing 18, and the second side wall 183 is communicated with one end of a fuel filling pipe 21 through the fuel filling port. The other end of the fuel filling pipe 21 is communicated with an expander 22; the height of the overflow port is higher than the height of the fuel filling port.
[0078] The heating oil enters the cavity 181 through the expander 22, which facilitates the filling of the heating oil. The height of the overflow port is higher than the height of the fuel filling port to prevent the liquid level of the heating oil in the cavity 181 of the housing 18 from being too high, ensuring that the heating oil is maintained at an ideal liquid level through automatic adjustment and quickly discharging the excess heating oil.
[0079] Specifically, when the liquid level of the heating oil in the cavity 181 of the housing 18 reaches the overflow port, if heating oil continues to be injected into the expander 22, the injected heating oil will be discharged from the housing 18 through the overflow port, thereby preventing the heating oil from overflowing.
[0080] In some embodiments, the phase conversion device may further include a mobile platform 24 and a telescopic bracket 25. The bracket is arranged on the mobile platform 24, the feeding tank 1 is arranged on the telescopic bracket 25, and the heating kettle 2 is arranged on the mobile platform 24, such that the feeding tank 1 is located directly above the heating kettle 2.
[0081] The mobile platform 24 can move the phase conversion device, and the telescopic bracket 25 can adjust the height of the feeding tank 1 and the distance between the feeding tank 1 and the heating kettle 2.
[0082] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Without departing from the principles and spirit of the present utility model, those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the utility model, and all such changes should fall within the protection scope of the claims of the present utility model.
Claims
1. A liquid-to-gas phase conversion device, characterized in that: include: A feeding tank (1) has a top and a bottom arranged opposite to each other in a height direction; the top of the feeding tank (1) is provided with a feed port (100) for feeding a liquid product and an air inlet (200) for connecting to a nitrogen source; and A heating kettle (2) having a top and a bottom arranged opposite to each other along the height direction; the heating kettle (2) is located below the feeding tank (1) and is used to heat the liquid phase product and convert it into a gas phase product; The bottom of the feeding tank (1) and the top of the heating kettle (2) are connected via a first pipeline (3), and a first regulating valve (4) is provided on the first pipeline (3); The top of the feeding tank (1) and the top of the heating kettle (2) are connected via a second pipeline (5), and a second regulating valve (6) is provided on the second pipeline (5).
2. The phase conversion device according to claim 1, characterized in that: It also includes a third pipeline (7), one end of which is connected to the top of the heating kettle (2), and the other end of which is connected to the reaction kettle; the gas phase product can enter the reaction kettle through the third pipeline (7).
3. The phase conversion device according to claim 2, characterized in that: The third pipeline (7) is provided with a third regulating valve (8).
4. The phase conversion device according to any one of claims 1 to 3, characterized in that: A discharge valve (9) is provided at the bottom of the heating kettle (2).
5. The phase conversion device according to claim 4, characterized in that: It also includes a fourth pipeline (10), the discharge valve (9) has a discharge port (91), one end of the fourth pipeline (10) is connected to the discharge port (91), the other end of the fourth pipeline (10) is connected to the first collection tank, and the fourth pipeline (10) is provided with a first on-off valve (11).
6. The phase conversion device according to claim 4, characterized in that: The first pipeline (3) is also provided with a second on-off valve (12) located between the first regulating valve (4) and the bottom of the feeding tank (1).
7. The phase conversion device according to claim 5, characterized in that: Also includes: a fifth pipeline (13), one end of the fifth pipeline (13) being connected to the top of the heating kettle (2), and the other end of the fifth pipeline (13) being connected to the second collecting tank; The fifth pipeline (13) is provided with a third on-off valve (14) near the top of the heating kettle (2) and a fourth on-off valve (15) near the second collecting tank; and a sixth pipeline (16), one end of the sixth pipeline (16) being in communication with the fifth pipeline (13) between the third on-off valve (14) and the fourth on-off valve (15); and the other end of the sixth pipeline (16) being in communication with the fourth pipeline (10) between the first on-off valve (11) and the discharge port (91); The sixth pipeline (16) is provided with a fifth on-off valve (17).
8. The phase conversion device according to claim 1, characterized in that: Also includes: The shell (18) has a top and a bottom arranged opposite to each other along the height direction, and the bottom of the shell (18) is provided with a heating port; the heating kettle (2) is embedded in the shell (18), the top of the heating kettle (2) is connected to the top of the shell (18), and the bottom of the heating kettle (2) is located above the bottom of the shell (18); A cavity (181) is formed between the outer wall of the heating kettle (2) and the inner wall of the shell (18), and heating oil can be placed in the cavity (181); and The electric heating component (19) comprises an electric heating rod (191) and inner and outer nuts (192), wherein the electric heating rod (191) is connected to the inner and outer nuts (192) by internal threads; the bottom of the shell (18) is connected to the inner and outer nuts (192) by external threads through the heating port, and the electric heating rod (191) is located in the cavity (181).
9. The phase conversion device according to claim 8, characterized in that: It also includes a temperature measuring component (20), wherein the temperature measuring component (20) includes a thermometer (202) and a jacket (201) for clamping and fixing the thermometer (202); The bottom of the shell (18) is provided with a temperature measuring port, and the bottom of the shell (18) is threadedly connected to the jacket (201) via the temperature measuring port; and / or, The bottom of the shell (18) is also provided with a sewage outlet (184).
10. The phase conversion device according to claim 8, characterized in that: The shell (18) comprises a first side wall (182) and a second side wall (183) which are arranged opposite to each other. The first side wall (182) of the shell (18) is provided with an overflow port. The second side wall (183) of the shell (18) is provided with a refueling port. The second side wall (183) is connected to one end of a refueling pipe (21) through the refueling port. The other end of the refueling pipe (21) is connected to an expander (22). The height of the overflow port is higher than the height of the refueling port.