Acid circulation structure of sulfuric acid alkylation reactor

Abstract

The utility model discloses an acid circulation structure of a sulfuric acid alkylation reactor, comprising a raw material inlet pipe, a reactant recovery pipe, an acid settler and a circulating acid pipeline. The raw materials continuously enter the reactor, are mixed by stirring blades and react accelerated by heat exchange with new sulfuric acid. The reactants enter the acid settler through a recovery pump to separate sulfuric acid and organic matter. The separated sulfuric acid is recycled. In order to reduce the temperature of the acid settler, a blower and an exhaust pipe are arranged to achieve uniform blowing of cold air and rapid heat dissipation. This structure optimizes the acid circulation, improves the reaction and separation efficiency, reduces energy consumption, and realizes efficient use of energy. At the same time, the new sulfuric acid heat exchange design can accelerate the reaction and improve the overall reaction efficiency. The overall design is compact and efficient, and the stability and economy of the sulfuric acid alkylation process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of alkylation processing, in particular to an acid circulation structure of a sulfuric acid alkylation reactor. Background Art

[0002] The principle of the sulfuric acid alkylation reactor is to use sulfuric acid as a catalyst to react hydrocarbon compounds with alcohol compounds under appropriate temperature and pressure conditions to generate corresponding ether compounds. The specific reaction steps are: firstly, hydrocarbon compounds and alcohol compounds are added to the reactor, inert gas is introduced for mixing, then an appropriate amount of sulfuric acid catalyst is added, the reaction temperature and pressure are controlled, the reaction is carried out, and finally the reaction is stopped and the product is separated. The sulfuric acid alkylation reactor has the advantages of fast reaction speed, high yield and simple operation, so it is widely used in industrial production.

[0003] In the prior art, there is an acid circulation structure of a sulfuric acid alkylation reactor with a publication number of "CN216799774U", which belongs to the technical field of alkylation processing, and comprises a reactor body and a reactant recovery pipe, wherein the reactant recovery pipe is arranged on the outer wall of the reactor body, a built-in buffer cavity is arranged in the inner wall of the reactant recovery pipe, an inner plug sealing pipe is arranged on one side of the inner wall of the reactant recovery pipe, a reactant recovery pump is arranged on one side of the outer wall of the reactant recovery pipe, and a riser is arranged on the top of the reactant recovery pump; the utility model arranges a reactant recovery pipe on the outer wall of a traditional alkylation reactor, and the reactant recovery pipe is provided with five groups of inner plug sealing pipes connected with various positions inside the reactor body, so that the reaction products at various positions in the reactor can be uniformly received at all times, and are quickly extracted and sent to the acid circulation component through the reactant recovery pump, thereby accelerating the efficiency of the acid circulation, and thus facilitating the efficient processing and production of the reactor.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] The sulfuric acid alkylation process is a typical exothermic reaction, which generates heat. If this heat cannot be managed and controlled in a timely and effective manner, it may cause a sharp rise in temperature in some local areas of the reactor. Excessive local temperature will not only affect the reaction rate and efficiency, but also lead to an increase in side reactions, thereby affecting the purity and quality of the final product. Utility Model Content

[0006] The utility model aims to provide an acid circulation structure for a sulfuric acid alkylation reactor to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A sulfuric acid alkylation reactor acid circulation structure comprises a reactor body, wherein the top of the reactor body is fixedly connected with a raw material inlet pipe, the bottom of the reactor body is fixedly connected with a reactant recovery pipe, a reactant recovery pump is fixedly arranged on the reactor body recovery pipe, the reactant recovery pipe is fixedly connected with an acid settler, a circulating acid pipeline is fixedly connected between the acid settler and the reactor body, a new acid addition pipe is fixedly connected with the side wall of the reactant, and the new acid addition pipe is spirally wound on the outer wall of the reactant recovery pipe.

[0009] Preferably, a rotating shaft is rotatably arranged on the reactor body, the rotating shaft passes through the reactor body, and a plurality of stirring blades are fixedly arranged on the rotating shaft.

[0010] Preferably, the rotating shaft is driven by a first driving motor, a reducer is arranged between the first driving motor and the rotating shaft, and the first driving motor is fixedly arranged on the end surface of the reactor body by a bracket.

[0011] Preferably, the reactant recovery pump is driven by a second drive motor.

[0012] Preferably, a blower is provided on one side of the second drive motor, the wind wheel of the blower is fixedly connected to the shaft of the second drive motor, the blower is fixedly connected to an exhaust pipe, and the exhaust pipe is spirally wound on the outer wall of the acid precipitator.

[0013] Preferably, the bottom of the reactor body is fixedly connected to a waste liquid discharge pipe.

[0014] Preferably, the bottom of the acid settler is fixedly connected to a product discharge pipe.

[0015] Preferably, a plurality of supporting legs are fixedly provided on the reactor body and the acid settler.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The design of the new acid addition pipe being spirally wound around the outer wall of the reactant recovery pipe not only realizes the effective heat exchange between the new sulfuric acid and the reactants, improves the reaction rate of the new sulfuric acid, but also promotes the sedimentation and separation of the reactants in the acid settler, providing a strong guarantee for the smooth progress of the entire sulfuric acid alkylation reaction process;

[0018] 2. Through the setting of the blower and the exhaust pipe, an efficient cooling system is formed. The second drive motor drives the blower to generate cold air while driving the reactant recovery pump. The cold air is evenly blown on the outer wall of the acid settler through the exhaust pipe. Since the exhaust pipe is wound in a spiral manner, the cold air can fully cover the surface of the acid settler and effectively take away the heat it emits. This design not only ensures that the acid settler can work at a suitable temperature, thereby improving the sedimentation effect and production efficiency, but also extends the service life of the equipment and reduces maintenance costs.

[0019] During the use of the utility model, the raw materials continuously enter the reactor through the inlet pipe, are mixed by the stirring blades, and the reaction is accelerated under the heat exchange of new sulfuric acid. The reactants are circulated by the recovery pump and enter the acid settler to separate sulfuric acid and organic matter, and the separated sulfuric acid is recycled. In order to reduce the temperature of the acid settler, a blower and an exhaust pipe are provided, and cold air is used to blow evenly to quickly dissipate heat. This structure optimizes the acid cycle, improves the reaction and separation efficiency, reduces energy consumption, and realizes efficient use of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the overall device of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the circulating acid pipeline of the utility model;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the acid settler of the utility model;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating shaft of the utility model.

[0024] In the figure: 1. reactor body; 2. raw material inlet pipe; 3. reactant recovery pipe; 4. reactant recovery pump; 5. acid settler; 6. circulating acid pipeline; 7. new acid addition pipe; 8. rotating shaft; 9. stirring blade; 10. first drive motor; 11. reducer; 12. bracket; 13. second drive motor; 14. blower; 15. exhaust pipe; 16. waste liquid discharge pipe; 17. product discharge pipe; 18. support leg. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 , the utility model provides a technical solution: Example

[0027] A sulfuric acid alkylation reactor acid circulation structure, comprising a reactor body 1, the top of the reactor body 1 is fixedly connected with a raw material inlet pipe 2, the bottom of the reactor body 1 is fixedly connected with a reactant recovery pipe 3, the reactant recovery pipe 3 is fixedly provided with a reactant recovery pump 4, the reactant recovery pipe 3 is fixedly connected with an acid settler 5, a circulating acid pipeline 6 is fixedly connected between the acid settler 5 and the reactor body 1, and a new acid addition pipe 7 is fixedly connected to the side wall of the reactor body 1, and the new acid addition pipe 7 is spirally wound on the outer wall of the reactant recovery pipe 3;

[0028] In this embodiment, the structure mainly includes a reactor body 1, and the top of the reactor body 1 is fixedly connected to a raw material inlet pipe 2 for continuously and stably introducing the raw material into the reactor. At the bottom of the reactor body 1, a reactant recovery pipe 3 is fixedly connected, and a reactant recovery pump 4 is fixedly arranged on the pipe to ensure that the reacted substances can be effectively extracted and recycled.

[0029] The other end of the reactant recovery pipe 3 is fixedly connected to an acid settler 5, which is used to separate sulfuric acid from organic matter in the recovered reactants. In order to improve the separation efficiency, a circulating acid pipeline 6 is fixedly connected between the acid settler 5 and the reactor body 1 to form a closed acid circulation loop. In this way, the settled sulfuric acid can be circulated back to the reactor to achieve the reuse of sulfuric acid.

[0030] In order to increase the reaction rate, a new acid addition pipe 7 is fixedly connected to the side wall of the reactor body 1, and the new acid addition pipe 7 is spirally wound on the outer wall of the reactant recovery pipe 3. The purpose of this design is that when new sulfuric acid is added to the reactor body 1 through the new acid addition pipe 7, it will exchange heat with the material in the reactant recovery pipe 3. Since heat is released during the sulfuric acid alkylation process, the material in the reactant recovery pipe 3 will have a certain amount of heat. Through the heat exchange with the new sulfuric acid, part of the heat of the material in the reactant recovery pipe 3 will be taken away by the new sulfuric acid, which is beneficial to the sedimentation and separation of the reactants in the acid settler 5. At the same time, the temperature of the newly added sulfuric acid will increase during the heat exchange process, thereby accelerating the reaction rate of the new sulfuric acid in the reactor body 1 and further improving the overall reaction efficiency. Example

[0031] On the basis of the first embodiment, in this embodiment, components such as rotating stirring blades 9 are provided in the reactor body 1 to improve the reaction rate in the reactor body 1. A rotating shaft 8 is rotatably provided on the reactor body 1, and the rotating shaft 8 passes through the reactor body 1. A plurality of stirring blades 9 are fixedly provided on the rotating shaft 8. The rotating shaft 8 is driven by a first driving motor 10. A reducer 11 is provided between the first driving motor 10 and the rotating shaft 8. The first driving motor 10 is fixedly provided on the end surface of the reactor body 1 through a bracket 12;

[0032] In this embodiment, a rotating stirring system is specially designed in the reactor body 1, which includes a rotating shaft 8, which passes through the center of the reactor body 1 and is installed in a sealed manner to prevent leakage of reactants such as sulfuric acid. A plurality of stirring blades 9 are fixedly arranged on the rotating shaft 8, and these stirring blades 9 are arranged in a spiral or radial manner so that the reactants in the reactor body 1 can be better stirred during rotation, thereby promoting uniform mixing of the raw materials and the progress of the reaction;

[0033] In order to drive the rotation of the rotating shaft 8, a first driving motor 10 is arranged on the reactor body 1, and a reducer 11 is arranged between the first driving motor 10 and the rotating shaft 8. The speed of the rotating shaft 8 can be adjusted by the reducer 11, so as to adjust the stirring speed as needed. The first driving motor 10 is fixedly arranged on the end surface of the reactor body 1 through a bracket 12. The bracket 12 is made of high-strength material to ensure the stable operation of the first driving motor 10 and the rotating shaft 8;

[0034] Through this design, the rotation of the rotating shaft 8 can drive the stirring blades 9 to efficiently stir the reactants in the reactor body 1, so that the raw materials are mixed more evenly, thereby increasing the reaction rate. At the same time, by adjusting the rotation speed of the reducer 11, the stirring speed can be accurately controlled to meet the needs of different reaction conditions. Example

[0035] In this embodiment, since the reactants still retain some heat after entering the acid settler 5, a blower 14 and other components are provided in this embodiment, and the wind force of the blower 14 is used to cool the acid settler 5, so that the acid settler 5 can better complete the settling process;

[0036] The reactant recovery pump 4 is driven by a second drive motor 13, a blower 14 is provided on one side of the second drive motor 13, a wind wheel of the blower 14 is fixedly connected to the shaft of the second drive motor 13, the blower 14 is fixedly connected to an exhaust pipe 15, and the exhaust pipe 15 is spirally wound on the outer wall of the acid settler 5;

[0037] Specifically, the reactant recovery pump 4 is driven by the second drive motor 13, and a blower 14 is provided on one side of the second drive motor 13. The wind wheel of the blower 14 is fixedly connected to the shaft of the second drive motor 13. When the second drive motor 13 is working, it not only drives the reactant recovery pump 4 to work, but also drives the wind wheel of the blower 14 to rotate to generate wind power. This design not only simplifies the equipment structure, but also significantly reduces energy consumption, and realizes the rational use of energy.

[0038] The blower 14 is fixedly connected to an exhaust pipe 15, which is spirally wound around the outer wall of the acid settler 5. This design allows the cold air generated by the blower 14 to blow evenly and effectively on the outer wall of the acid settler 5, quickly taking away the heat on the surface and inside of the acid settler, ensuring that the acid settler 5 can operate at a suitable temperature, thereby better completing the sedimentation process.

[0039] The bottom of the reactor body 1 is fixedly connected to a waste liquid discharge pipe 16, and the bottom of the acid settler 5 is fixedly connected to a product discharge pipe 17. A plurality of support legs 18 are fixedly provided on the reactor body 1 and the acid settler 5.

[0040] In this embodiment, a waste liquid discharge pipe 16 is fixedly connected to the bottom of the reactor body 1. The design of this waste liquid discharge pipe 16 takes into account the waste liquid that may be generated during the reaction and cannot be recovered. When these waste liquids accumulate to a certain extent, they will be discharged from the reactor through the waste liquid discharge pipe 16 to ensure the smooth progress of the reaction process. The waste liquid discharge pipe 16 is usually connected to a waste liquid collection system, which can further process these waste liquids to meet environmental protection requirements;

[0041] Secondly, the bottom of the acid settler 5 is also fixedly connected with a product discharge pipe 17. In the acid settler 5, after sulfuric acid and organic matter are separated, the generated sulfuric acid can be returned to the reactor through the circulating acid pipeline 6 for continued use, while the organic matter, as the main product of the reaction, is discharged through the product discharge pipe 17. The design of the product discharge pipe 17 takes into account the characteristics of the product and the subsequent treatment requirements to ensure that the product can be safely and effectively collected and treated;

[0042] In order to ensure the stable placement of the reactor body 1 and the acid precipitator 5, and to facilitate the connection with the waste liquid discharge pipe 16 and the product discharge pipe 17, a number of support legs 18 are fixedly provided on the reactor body 1 and the acid precipitator 5. These support legs 18 are made of high-strength materials to ensure the stability of the equipment during operation. At the same time, the design of the support legs 18 also takes into account the installation and maintenance requirements of the equipment, making the installation and disassembly process of the equipment easier.

[0043] Working principle: During the use of the utility model, the raw materials continuously and stably enter the reactor body 1 through the raw material inlet pipe 2. Inside the reactor, the raw materials are mixed and reacted under the action of the stirring blades 9. Newly added sulfuric acid is added through the new acid addition pipe 7, which is spirally wound on the outer wall of the reactant recovery pipe 3 to perform heat exchange with the material in the recovery pipe. After the heat exchange, the temperature of the new sulfuric acid is increased, which accelerates the reaction speed in the reactor;

[0044] The reacted substances are extracted through the reactant recovery pipe 3 and recycled by the reactant recovery pump 4. These substances enter the acid settler 5, where sulfuric acid is separated from organic matter. The separated sulfuric acid is returned to the reactor through the circulating acid pipeline 6 to achieve the reuse of sulfuric acid.

[0045] After the reactants enter the acid settler 5, a certain amount of heat is still retained. In order to reduce the temperature, a blower 14 and an exhaust pipe 15 are provided. The wind wheel of the blower 14 is fixedly connected to the shaft of the second drive motor 13. When the second drive motor 13 is working, it not only drives the reactant recovery pump 4, but also drives the wind wheel of the blower 14 to rotate, generating cold wind. These cold winds are spirally wound around the outer wall of the acid settler 5 through the exhaust pipe 15, and are evenly and effectively blown on the surface of the acid settler 5, quickly taking away its heat, ensuring that the acid settler 5 works at a suitable temperature, thereby better completing the sedimentation process;

[0046] In summary, the acid circulation structure of the sulfuric acid alkylation reactor not only improves the reaction rate and separation efficiency, but also reduces energy consumption and realizes the rational use of energy by optimizing the acid circulation and adding a stirring system and a cooling system.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sulfuric acid alkylation reactor acid circulation structure, comprising a reactor body (1), characterized in that: The top of the reactor body (1) is fixedly connected to a raw material inlet pipe (2), the bottom of the reactor body (1) is fixedly connected to a reactant recovery pipe (3), a reactant recovery pump (4) is fixedly arranged on the reactant recovery pipe (3), the reactant recovery pipe (3) is fixedly connected to an acid settler (5), a circulating acid pipeline (6) is fixedly connected between the acid settler (5) and the reactor body (1), and a new acid addition pipe (7) is fixedly connected to the side wall of the reactor body (1), and the new acid addition pipe (7) is spirally wound on the outer wall of the reactant recovery pipe (3).

2. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 1, characterized in that: A rotating shaft (8) is rotatably arranged on the reactor body (1); the rotating shaft (8) passes through the reactor body (1); and a plurality of stirring blades (9) are fixedly arranged on the rotating shaft (8).

3. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 2, characterized in that: The rotating shaft (8) is driven by a first driving motor (10); a reducer (11) is provided between the first driving motor (10) and the rotating shaft (8); and the first driving motor (10) is fixedly arranged on an end surface of the reactor body (1) via a bracket (12).

4. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 3, characterized in that: The reactant recovery pump (4) is driven by a second drive motor (13).

5. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 4, characterized in that: A blower (14) is provided on one side of the second drive motor (13); a wind wheel of the blower (14) is fixedly connected to the shaft of the second drive motor (13); the blower (14) is fixedly connected to an exhaust pipe (15); and the exhaust pipe (15) is spirally wound on the outer wall of the acid precipitator (5).

6. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 1, characterized in that: The bottom of the reactor body (1) is fixedly connected to a waste liquid discharge pipe (16).

7. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 2, characterized in that: The bottom of the acid settler (5) is fixedly connected to a product discharge pipe (17).

8. The acid circulation structure of a sulfuric acid alkylation reactor according to claim 1, characterized in that: A plurality of support legs (18) are fixedly arranged on the reactor body (1) and the acid settler (5).

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