A reaction apparatus that facilitates the mixing of methanol and urea

By designing a multi-layered reactor and equipping it with components such as stirring blades and vacuum pumps, the inhomogeneity and safety hazards in the methanol and urea mixing process were solved, achieving a stable and safe mixing effect.

CN224308398UActive Publication Date: 2026-06-02QINGDAO SHENGYU WEIYE TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO SHENGYU WEIYE TECH CO LTD
Filing Date
2025-05-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Traditional reaction devices suffer from localized supersaturation, uneven mixing, unstable reaction environment, high methanol volatility, and safety hazards during the methanol and urea mixing process. Furthermore, they lack effective temperature control and anti-crystallization measures.

Method used

A three-layer reactor consisting of a corrosion-resistant stainless steel inner layer, an intermediate heating jacket, and a high-strength outer structural steel layer was designed. It is equipped with stirring blades, a vacuum pump, a safety valve, a pressure sensor, and an inert gas injection system to ensure sealing and safety, and to promote uniform mixing through stirring blades and baffles.

Benefits of technology

This method achieves uniform mixing of methanol and urea, improves the stability and safety of the reaction environment, reduces the risk of methanol volatilization, avoids crystallization, and enhances the safety control capabilities of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of methanol and urea technology, and discloses a reaction device for facilitating the mixing of methanol and urea. The device includes a base, a reaction vessel mounted on top of the base, a lid mounted on top of the reaction vessel, a fastener mounted on top of the lid, and the fastener being bolted to the top of the base. A feed pipe and an air inlet are mounted on the top of the lid. This reaction device facilitates the mixing of methanol and urea. The fastener maintains structural stability, the PTFE gasket maintains the sealing of the reaction vessel, the vacuum pump and air inlet are used to replace air and inject inert gas, the support legs maintain overall structural stability, the buffer pad absorbs vibration, the safety valve releases pressure when the internal pressure is too high to improve safety, the stirring blades ensure thorough mixing of methanol and urea, the grooves on the stirring blades effectively reduce resistance in the mixture, and the spiral baffles allow for initial mixing of methanol and urea.
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Description

Technical Field

[0001] This utility model relates to the field of methanol and urea technology, specifically to a reaction device that facilitates the mixing of methanol and urea. Background Technology

[0002] Methanol, as a clean, flammable, and low-pollution liquid fuel, has high energy density and good storage properties. Meanwhile, urea, as the main raw material for nitrogen fertilizer, has abundant resources and low-cost advantages. Its mixture with methanol can be used to produce low-pollution hydrogen or as a fuel pretreatment material for fuel cells.

[0003] Traditional reaction equipment has poor control performance, which can easily lead to local supersaturation or uneven mixing. The reaction environment is unstable and methanol is highly volatile, which can easily cause safety accidents. Some equipment lacks temperature control components, and urea is prone to crystallization. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a reaction apparatus that facilitates the mixing of methanol and urea, thereby solving the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a reaction device for facilitating the mixing of methanol and urea, comprising a base, a reaction vessel mounted on the top of the base, a lid mounted on the top of the reaction vessel, a fastener mounted on the top of the lid, the fastener being fixedly mounted on the top of the base by bolts, a motor mounted on the top of the lid, and a feed pipe and an air inlet mounted on the top of the lid.

[0008] Preferably, the base has four support legs installed at its bottom, with the four support legs located at the four corners of the base bottom, and a buffer pad is installed between the base and the reactor.

[0009] Preferably, the reactor has three layers: an inner layer of corrosion-resistant stainless steel, a middle layer of heating jacket, and an outer layer of high-strength structural steel.

[0010] Preferably, a safety valve is installed on the top of the cover, a pressure sensor is installed on the right side of the safety valve, a vacuum pump is installed on the top of the cover, and a gas sensor is installed on the left side of the vacuum pump.

[0011] Preferably, a rotating shaft is fixedly installed at the output end of the motor, and several stirring blades are distributed around the outer circumference of the rotating shaft, with grooves formed on the surface of the stirring blades.

[0012] Preferably, the bottom of the lid and the top of the reactor are provided with grooves, and a gasket is provided inside the groove. The gasket is made of polytetrafluoroethylene.

[0013] Preferably, a baffle plate is installed inside the feeding pipe, the baffle plate is spiral-shaped, and a first pipe and a second pipe are installed at the top of the feeding pipe through a buffer box. Flow sensors are located on the outside of the first pipe and the second pipe.

[0014] Compared with the prior art, this utility model provides a reaction device that facilitates the mixing of methanol and urea, and has the following beneficial effects: the fasteners can maintain the stability of the structure, the gaskets made of polytetrafluoroethylene can maintain the sealing of the reaction vessel, the vacuum pump and the air inlet are used to replace air and inject inert gas, the support legs maintain the stability of the overall structure, the buffer pad can absorb vibration, the safety valve can release pressure when the internal pressure is too high, improving safety, the stirring blades can fully mix methanol and urea, the grooves on the stirring blades can effectively relieve the resistance in the mixture, and the spiral baffles can allow methanol and urea to be initially mixed. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the heating component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the stirring blade structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the baffle structure of this utility model.

[0019] In the diagram: 1. Base; 2. Support leg; 3. Buffer pad; 4. Reactor; 5. Fastener; 6. Bolt; 7. Vacuum pump; 8. Motor; 9. Safety valve; 10. Heating component; 11. Groove; 12. Washer; 13. Cover; 14. Pressure sensor; 15. Air inlet; 16. Gas sensor; 17. Rotating shaft; 18. Stirring blade; 19. Feed pipe; 20. Buffer tank; 21. First pipe; 22. Second pipe; 23. Flow sensor; 24. Baffle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not 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 effort are within the protection scope of the present utility model.

[0021] like Figure 1-4 As shown, this utility model provides a technical solution: a reaction device for facilitating the mixing of methanol and urea, including a base 1, a reaction vessel 4 installed on the top of the base 1, a cover 13 installed on the top of the reaction vessel 4, a fastener 5 installed on the top of the cover 13, the fastener 5 being fixedly installed on the top of the base 1 by bolts 6, a motor 8 installed on the top of the cover 13, and a feed pipe 19 and an air inlet 15 installed on the top of the cover 13.

[0022] Furthermore, four support legs 2 are installed at the bottom of the base 1, and the four support legs 2 are located at the four corners of the bottom of the base 1. A buffer pad 3 is installed between the base 1 and the reaction vessel 4.

[0023] Specifically, the four corner supports 2 can support the base 1, increasing stability, and the buffer pads 3 can absorb the vibrations generated when the reactor 4 is in operation, maintaining the stability of the overall structure.

[0024] Furthermore, the reactor 4 has three layers: the inner layer is made of corrosion-resistant stainless steel, the middle layer is a heating jacket, and the outer layer is made of high-strength structural steel. A heating assembly 10 is connected to the outside of the reactor 4.

[0025] Specifically, the inner layer is resistant to corrosion from methanol and urea, the heating component 10 and the heating jacket can maintain the reaction temperature, and the outer layer can protect the inner layer and the jacket and provide support.

[0026] Furthermore, a safety valve 9 is installed on the top of the cover 13, a pressure sensor 14 is installed on the right side of the safety valve 9, a vacuum pump 7 is installed on the top of the cover 13, and a gas sensor 16 is installed on the left side of the vacuum pump 7.

[0027] Specifically, pressure sensor 14 monitors the pressure changes inside reactor 4 in real time, and automatically releases excessive pressure through safety valve 9 when the pressure inside reactor 4 exceeds the set safety range to ensure safe operation of the equipment. Vacuum pump 7 can extract air and inject inert gas through gas inlet 15. Gas sensor 16 can monitor the type of gas composition to reduce the risk of methanol vapor explosion.

[0028] Furthermore, a rotating shaft 17 is fixedly installed at the output end of the motor 8, and several stirring blades 18 are distributed around the outer circumference of the rotating shaft 17. The surface of the stirring blades 18 is provided with grooves.

[0029] Specifically, the stirring blade 18 can better promote the mixing of methanol and urea, and the grooved stirring blade 18 can effectively reduce the resistance during stirring and improve the stability of stirring.

[0030] Furthermore, the bottom of the cover 13 and the top of the reactor 4 are provided with grooves 11, and a gasket 12 is provided inside the grooves 11. The gasket 12 is made of polytetrafluoroethylene.

[0031] Specifically, the PTFE gasket 12 can improve the sealing performance, prevent methanol evaporation and leakage, and at the same time resist chemical corrosion, ensuring the airtightness and safety of the reactor 4.

[0032] Furthermore, a baffle 24 is installed inside the feed pipe 19. The baffle 24 is spiral-shaped. A first pipe 21 and a second pipe 22 are installed on the top of the feed pipe 19 through a buffer box 20. Flow sensors 23 are located on the outside of the first pipe 21 and the second pipe 22.

[0033] Specifically, the spiral and baffle 24 guide the flow of the mixed liquid, allowing methanol and urea to initially fuse inside the feed pipe 19. The buffer tank 20 helps stabilize the feeding process and reduce flow impact. The flow sensor 23 monitors the flow rate through the first pipe 21 and the second pipe 22 in real time to ensure the balance of methanol and urea input.

[0034] Working principle: First, a reaction vessel 4 is installed on the top of the base 1, a cover 13 is installed on the top of the reaction vessel 4, and a fastener 5 is installed on the top of the cover 13. Grooves 11 are formed at the bottom of the cover 13 and the top of the reaction vessel 4, with gaskets 12 inside the grooves 11 to maintain the sealing of the reaction vessel 4. An air inlet 15 is installed on the top of the cover 13, and a vacuum pump 7 is installed on the top of the cover 13. A gas sensor 16 is installed on the left side of the vacuum pump 7 for replacing air and injecting inert gas. Second, support legs are installed at the bottom of the base 1. Four buffer pads 3 are installed between the base 1 and the reactor 4 to maintain the stability of the overall structure. A safety valve 9 is installed on the top of the cover 13. A pressure sensor 14 is installed on the right side of the safety valve 9 to release pressure when the internal pressure is too high, thereby improving safety. Finally, a rotating shaft 17 is fixedly installed at the output end of the motor 8. Several stirring blades 18 are distributed around the outer circumference of the rotating shaft 17 to ensure that methanol and urea are fully mixed. A baffle 24 is installed inside the feed pipe 19. The baffle 24 is spiral in shape and is used for the initial mixing of methanol and urea.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reaction apparatus for facilitating the mixing of methanol and urea, comprising a base (1), characterized in that: A reactor (4) is installed on the top of the base (1), a cover (13) is installed on the top of the reactor (4), a fastener (5) is installed on the top of the cover (13), the fastener (5) is fixedly installed on the top of the base (1) by bolts (6), a motor (8) is installed on the top of the cover (13), and a feed pipe (19) and an air inlet (15) are installed on the top of the cover (13).

2. The reaction apparatus for facilitating the mixing of methanol and urea according to claim 1, characterized in that: The base (1) has four support legs (2) installed at its bottom. The four support legs (2) are located at the four corners of the bottom of the base (1). A buffer pad (3) is installed between the base (1) and the reactor (4).

3. The reaction apparatus for facilitating the mixing of methanol and urea according to claim 1, characterized in that: The reactor (4) has three layers: the inner layer is corrosion-resistant stainless steel, the middle layer is a heating jacket, and the outer layer is high-strength structural steel. A heating assembly (10) is connected to the outside of the reactor (4).

4. The reaction apparatus for facilitating the mixing of methanol and urea according to claim 1, characterized in that: A safety valve (9) is installed on the top of the cover (13), a pressure sensor (14) is installed on the right side of the safety valve (9), a vacuum pump (7) is installed on the top of the cover (13), and a gas sensor (16) is installed on the left side of the vacuum pump (7).

5. The reaction apparatus for facilitating the mixing of methanol and urea according to claim 1, characterized in that: The output end of the motor (8) is fixedly installed with a rotating shaft (17), and a number of stirring blades (18) are distributed on the outer circumference of the rotating shaft (17), and grooves are opened on the surface of the stirring blades (18).

6. The reaction apparatus for facilitating the mixing of methanol and urea according to claim 1, characterized in that: The bottom of the cover (13) and the top of the reactor (4) are provided with grooves (11), and a gasket (12) is provided inside the groove (11). The gasket (12) is made of polytetrafluoroethylene.

7. The reaction apparatus for facilitating the mixing of methanol and urea according to claim 1, characterized in that: The feed pipe (19) is equipped with a baffle (24) inside, the baffle (24) is spiral, and the top of the feed pipe (19) is equipped with a first pipe (21) and a second pipe (22) through a buffer box (20). The first pipe (21) and the second pipe (22) are equipped with flow sensors (23) on the outside.