A kettle-type stirring reactor for reforming CO2 pitch into CO

Abstract

The utility model discloses a kind of kettle type stirring reactors for CO2 pitch reforming CO, including reaction kettle, reaction kettle is installed on lifting frame;Reaction kettle includes the kettle shell of top opening, kettle shell has detachable kettle core in, kettle core top and kettle cover detachably connect;The gas pipe of reaction kettle is connected in proper order condenser, back pressure valve, gas buffer tank, filter;Wherein, kettle cover is fixed on the kettle cover fixing frame of lifting frame, kettle shell is fixed on the kettle shell fixing frame of lifting frame, and kettle shell fixing frame can be moved up and down relative to kettle cover fixing frame;The utility model connects kettle cover and kettle shell respectively on the different components of lifting frame, can be moved down and separated from kettle cover by lifting frame drive kettle shell (including kettle core), when separation distance is enough, kettle core is taken out from kettle shell to clean, prevent the risk of air leakage caused by kettle cover movement when cleaning kettle core.

Description

Technical Field

[0001] This utility model belongs to the technical field of CO2 asphalt reforming equipment, and in particular relates to a stirred reactor for CO2 asphalt reforming to produce CO. Background Technology

[0002] CO2 asphalt reforming is a novel technology that uses a chemical reaction between carbon dioxide and asphalt to achieve efficient resource conversion and carbon emission reduction. This technology not only provides a new pathway for the high-value utilization of asphalt but also fixes CO2 emissions from industry, demonstrating significant research and application potential in the energy and chemical industry.

[0003] A stirred tank reactor is typically used for CO2 asphalt reforming. In industrial applications, due to the large size, weight, and fixed location of these reactors, high-pressure water jets or chemical cleaning methods are commonly used for cleaning. However, in laboratory settings, smaller reactors are usually used, requiring the removal of the reactor core before cleaning.

[0004] For small reactors, the lid is usually connected to an inlet pipe, an outlet pipe, a condenser tube, etc. When removing the reactor core, the lid must be removed first. However, after removing the lid, the above pipes need to be reconnected, which causes extra workload. Moreover, frequent disassembly of pipes can easily lead to the risk of gas leakage, affecting the experimental results. Utility Model Content

[0005] The purpose of this invention is to provide a stirred reactor for CO2 asphalt reforming to CO, avoiding the workload and risk of gas leakage caused by moving the reactor lid.

[0006] The present invention adopts the following technical solution: a stirred reactor for CO2 asphalt reforming to CO, comprising a reaction vessel, the reaction vessel being installed on a lifting frame; The reactor includes a shell with an open top, a removable reactor core inside the shell, and the top of the reactor core is detachably connected to the reactor lid; The gas outlet pipe of the reactor is connected in sequence to the condenser, back pressure valve, gas buffer tank, and filter; The lid is fixed on the lid fixing frame of the lifting frame, and the shell is fixed on the shell fixing frame of the lifting frame. The shell fixing frame can move up and down relative to the lid fixing frame.

[0007] The beneficial effects of this utility model are: This utility model connects the lid and the shell to different parts of the lifting frame, and the lifting frame can drive the shell (including the core) to move downward and separate from the lid. When the separation distance is sufficient, the core can be taken out from the shell for cleaning, thus preventing the risk of air leakage caused by moving the lid when cleaning the core. Attached Figure Description

[0008] Figure 1This is a schematic diagram of the structure of the kettle body and lifting frame in a stirred reactor for CO2 asphalt reforming to CO according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the separation state of the reactor core and reactor lid in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the pot lid in an embodiment of the present invention; Figure 4 This is a schematic diagram of a stirred reactor for CO2 reforming of asphalt to CO according to an embodiment of the present invention.

[0009] Among them: 10. Reactor; 11. Gas outlet pipe; 12. Stirring motor; 13. Thermometer; 14. Reactor lid; 15. Boss; 16. Reactor shell; 17. Reactor core; 171. Annular groove; 172. Handle; 173. Connecting bolt; 18. Gas inlet pipe; 181. Gas distributor; 19. Stirring shaft; 20. Lifting frame; 21. Lid fixing frame; 22. Shell fixing frame; 23. Frame body; 24. Lead screw; 25. Rotary motor; 26. Motor frame; 30. Condenser; 40. Back pressure valve; 50. Gas buffer tank; 51. Liquid outlet; 60. Filter; 70. Chromatography instrument. Detailed Implementation

[0010] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0011] This utility model discloses a stirred reactor for CO2 asphalt reforming to CO, such as... Figure 1 As shown, the reactor includes a reactor 10, which is mounted on a lifting frame 20. The reactor 10 includes a shell 16 with a top opening, and a detachable core 17 inside the shell 16. The top of the core 17 is detachably connected to the lid 14. The gas outlet pipe 11 of the reactor 10 is sequentially connected to a condenser 30, a back pressure valve 40, a gas buffer tank 50, and a filter 60. The lid 14 is fixed on the lid fixing frame 21 of the lifting frame 20, and the shell 16 is fixed on the shell fixing frame 22 of the lifting frame 20. The shell fixing frame 22 can move up and down relative to the lid fixing frame 21.

[0012] This invention connects the lid 14 and the shell 16 to different parts of the lifting frame 20. The lifting frame can drive the shell 16 (including the core 17) to move downward and separate it from the lid 14. When the separation distance is sufficient, the core 17 can be taken out from the shell 16 for cleaning, thus preventing the risk of air leakage caused by moving the lid 14 when cleaning the core 17.

[0013] In this embodiment, the reactor 10 consists of a lower shell 16, a reactor core 17 located inside the shell 16, and an upper lid 14. The shell 16 is a cylindrical shape with an open top, and is equipped with a heating element inside for heating the reactor core 17. It also has a heat insulation and heat preservation layer to ensure the stability of the reaction temperature inside the reactor core 17.

[0014] The outer periphery of the vessel shell 16 has a horizontally arranged boss 15, which is connected to the vessel lid fixing bracket 21. The boss 15 can be flat or frustum-shaped, as long as it meets the support requirements. Figure 1 and Figure 2 As shown, the boss 15 is a triangular prism with a flat bottom surface to facilitate its fixed connection with the lid fixing bracket 21. The structure of the lid fixing bracket 21 is not limited here and can be designed according to the actual conditions of the experimental site. This design allows the lid 14 to be fixed in a fixed position on the lifting frame 20, preventing the risk of air leakage during movement.

[0015] The vessel lid 14 has an inlet pipe 18, an outlet pipe 11, and a thermometer 13. All three pipes pass through the lid 14 from above and enter the inner cavity of the vessel core 17 to achieve gas intake, exhaust, and temperature measurement during the reaction process. The inlet pipe 18 passes through the lid 14, with its bottom located at the bottom of the vessel core 17; a gas distributor 181 is connected to the bottom end of the inlet pipe 18. Additionally, a stirring motor 12 is installed on the lid 14, with its stirring shaft 19 also passing through the lid 14 and extending into the bottom of the vessel core 17, thereby agitating the solid reactants during the reaction. All components installed on the lid 14 are sealed to prevent gas leakage during the reaction and to avoid affecting reaction efficiency.

[0016] The vessel core 17 is a barrel-shaped vessel with an open top. A connecting flange extends outward from its top, and the connecting flange is sealed to the vessel cover 14 by connecting bolts 173. The top surface of the connecting flange has an annular groove 171, within which a graphite gasket is placed. Figure 3 As shown, the lid 14 has a raised ring at the corresponding position of the annular groove 171. The lid 14 and the vessel core 17 can be sealed by the cooperation of the graphite pad and the raised ring. Specifically, the outer wall surface of the vessel core 17 is in contact with the inner wall surface of the vessel shell 16, thereby realizing the heating of the vessel core 17.

[0017] In addition, handles 172 are radially outwardly arranged on the outer periphery of the connecting flange. Typically, there are two handles 172, symmetrically arranged. Several connecting bolts perpendicular to the flange connection surface are provided on the upper end face of the connecting flange. Through holes are provided on the vessel cover 14 at positions corresponding to the connecting bolts 173. When the vessel core 17 rises, the handles 172 are rotated to align the connecting bolts 173 with the through holes until the raised ring is tightly against the graphite gasket in the annular groove. The rise of the vessel core 17 is then stopped, and the vessel cover 14 and the vessel core 17 are connected as a single unit using nuts.

[0018] In one embodiment, the lifting frame 20 includes a frame body 23, and a lid fixing frame 21 is fixedly installed on the upper part of the frame body 23; the structure of the lid fixing frame 21 can be designed as needed, so that the lid 14 can be fixed in a certain position.

[0019] A motor frame 26 is installed at the lower part of the frame 23. A rotary motor 25 is mounted on the motor frame 26. The output shaft of the rotary motor 25 faces upward and is fixedly connected to a lead screw 24. A nut is threaded onto the lead screw 24 and is fixedly connected to the vessel shell fixing frame 22. When the rotary motor 25 rotates, it drives the lead screw 24 to rotate, and the nut rises or falls with the rotation of the lead screw 24. Figure 2 The diagram shows the vessel core 17 descending to the predetermined position. At this time, the vessel core 17 is separated from the gas distributor 181 and the stirring shaft 19 by a certain distance. The vessel core 17 can be pulled out of the vessel shell 16 by pulling the handle 172, thereby avoiding obstruction by the gas distributor 181 and the stirring shaft 19.

[0020] In addition, in the embodiments of this utility model, such as Figure 4 As shown, the reactor core 17 serves as the reaction chamber. CO2 gas continuously enters the asphalt through the inlet pipe 18. The gas generated after reacting with the asphalt (mainly CO and H2) is discharged from the outlet pipe 11. Then, it is cooled by the condenser 30, reducing the temperature from approximately 500°C to approximately 50°C. It then passes through the back pressure valve 40 on the pipeline and enters the gas buffer tank 50. In the gas buffer tank 50, the liquid mixed with the gas falls to the bottom of the tank. After the reaction, the liquid is discharged through the outlet 51. The gas is then collected after passing through the filter 60 or sent to the chromatograph 70 for detection.

[0021] Regarding filter 60, this embodiment includes three liquid filters. The first liquid filter filters dichloromethane, the second filter filters water, and the third filter filters anhydrous ethanol. These three filters can remove incompletely liquefied aromatic phenolic impurities from the gas.

Claims

1. A stirred reactor for CO2 reforming of bitumen to CO, characterized in that, Includes a reaction vessel (10), which is mounted on a lifting frame (20); The reactor (10) includes a shell (16) with a top opening, and a removable core (17) inside the shell (16), the top of which is detachably connected to the lid (14). The gas outlet pipe (11) of the reactor (10) is connected in sequence to the condenser (30), the back pressure valve (40), the gas buffer tank (50), and the filter (60). The lid (14) is fixed on the lid fixing frame (21) of the lifting frame (20), and the shell (16) is fixed on the shell fixing frame (22) of the lifting frame (20). The shell fixing frame (22) can move up and down relative to the lid fixing frame (21).

2. The stirred tank reactor for CO2 bitumen reforming to CO as described in claim 1, characterized in that, The reactor core (17) is a barrel-shaped vessel with an open top, and a connecting flange extends outward from its top. The connecting flange is sealed to the reactor cover (14) by connecting bolts (173).

3. A stirred reactor for CO2 asphalt reforming to CO as described in claim 2, characterized in that, The top surface of the connecting flange has an annular groove (171), and a graphite gasket is provided in the annular groove (171). The lid (14) has a raised ring at the corresponding position of the annular groove (171).

4. A stirred reactor for CO2 asphalt reforming to CO as described in claim 2 or 3, characterized in that, A stirring motor (12) is installed on the lid (14), and the stirring shaft (19) of the stirring motor (12) is located at the bottom of the core (17).

5. A stirred reactor for CO2 bitumen reforming to CO as described in claim 4, characterized in that, The outer periphery of the vessel shell (16) has a horizontally arranged boss (15), which is connected to the vessel lid fixing frame (21).

6. A stirred reactor for CO2 bitumen reforming to CO as described in claim 5, characterized in that, The lid (14) is provided with an air inlet pipe (18), the bottom of which is located at the bottom of the core (17); The bottom end of the air intake pipe (18) is connected to a gas distributor (181).

7. A stirred reactor for CO2 bitumen reforming to CO as described in claim 5 or 6, characterized in that, The lifting frame (20) includes a frame (23), and the upper part of the frame (23) is fixedly provided with the pot lid fixing frame (21). The lower part of the frame (23) is provided with a motor frame (26), and a rotary motor (25) is installed on the motor frame (26). The output shaft of the rotary motor (25) faces upward and is fixedly connected to the lead screw (24). A nut is threaded onto the lead screw (24), and the nut is fixedly connected to the vessel shell fixing frame (22).

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