A highly efficient mixing and reaction integrated equipment for preparing hexanediol

Abstract

The utility model is applicable to the technical field of chemical equipment, and provides an efficient mixing and reaction integrated equipment for preparing hexanediol, including a tank body, a conical upper cover, and a conical bottom cover, wherein a discharge pipe is passed through the bottom of the conical bottom cover, a catalyst input pipe is passed through the conical upper cover, and a feed pipe and an inert gas pipe are passed through the catalyst input pipe; a hemispherical cover is fixed on the top of the tank body; an expansion sleeve is provided at one end of the catalyst input pipe; and a conical filter screen is fixed on the bottom of the tank body. The utility model sets a catalyst input pipe, and uses the feed pipe to input high-flow rate production raw materials, and uses the negative pressure generated by the high-flow rate production raw materials in the catalyst input pipe to form a strong adsorption force, so that the catalyst powder is sucked into the catalyst input pipe, and quickly expands and atomizes after being input into the expansion sleeve, so that the production raw materials and the catalyst are fully mixed, and after mixing, they are introduced into the hemispherical cover for reaction, thereby increasing the reaction rate and improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, and more specifically, to a highly efficient mixing and reaction integrated equipment for preparing hexanediol. Background Art

[0002] Hexanediol is an organic substance with the molecular formula C6H14O2 and a molecular weight of 118.17. Hexanediol has many isomers. Unless otherwise specified, hexanediol generally refers to 1,2-hexanediol. 1,2-Hexanediol is a colorless, transparent liquid with a mild sweet aroma. It is soluble in water, ethanol, ether, and low-carbon aliphatic hydrocarbons. It is used in the production of pesticide pyrethroids, organic peroxides, cyclic musks, polyethylene plastic crosslinkers, and polyether rubbers. It can also be used in the pharmaceutical field, plastic production, cosmetics and detergents, skin care products, and shampoos.

[0003] There are two main methods for synthesizing hexanediol: direct synthesis and indirect synthesis. Direct synthesis includes hydrogenation reduction, hydrazine hydrate reduction and decarbonylation; indirect synthesis includes epoxidation, solvent and hydroxylation. Among them, hydrogenation reduction is more common, but the existing equipment for producing hexanediol by hydrogenation reduction has the problem of uneven mixing of reducing agent and production raw materials, which affects the production efficiency during the production process. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a highly efficient mixing and reaction integrated equipment for preparing hexanediol.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a high-efficiency mixing and reaction integrated equipment for preparing hexanediol, comprising a tank body and a conical upper cover and a conical bottom cover respectively fixed at the top and bottom of the tank body, a discharge pipe with a first valve passing through the bottom of the conical bottom cover, a catalyst input pipe extending into the tank body passing through the conical upper cover, a feed pipe coaxial with the catalyst input pipe passing through the catalyst input pipe horizontally, and an inert gas pipe coaxial with the catalyst input pipe passing through the catalyst input pipe vertically;

[0007] A hemispherical cover that cooperates with the catalyst input pipe is fixed on the top of the tank body; an expansion sleeve is provided at one end of the catalyst input pipe located inside the tank body, and the output end of the expansion sleeve extends to the center of the hemispherical cover; a conical filter screen cover that extends into the tank body and cooperates with the inner cavity of the tank body is fixed on the bottom of the tank body.

[0008] As a preferred technical solution of the utility model, the first valve on the discharge pipe is a two-position three-way solenoid valve, and the discharge pipe is Y-shaped.

[0009] As a preferred technical solution of the utility model, a guide tube extending to the bottom of the hemispherical cover is fixed to the bottom of the expansion sleeve, and an outward-turned guide cover matching the inner spherical surface of the hemispherical cover is fixed to the output end of the guide tube.

[0010] As a preferred technical solution of the utility model, a discharge trough communicating with the inner cavity of the hemispherical cover is provided on the outer circumferential surface of the hemispherical cover near the top opening.

[0011] As a preferred technical solution of the utility model, a discharge pipe with a second valve and connected to the conical filter screen is fixed at the bottom end of the conical filter screen, and the discharge end of the discharge pipe passes through the conical bottom cover and extends to the outside of the conical bottom cover.

[0012] The advantages of the utility model are:

[0013] 1. The utility model sets a catalyst input pipe and uses a feed pipe to input high-flow rate production raw materials. The negative pressure generated by the high-flow rate production raw materials in the catalyst input pipe is used to form a strong adsorption force. The catalyst powder is sucked into the catalyst input pipe and quickly expands and atomizes after being input into the expansion sleeve, so that the production raw materials and the catalyst are fully mixed. After mixing, they are introduced into the hemispherical cover for reaction, thereby increasing the reaction rate and improving the production efficiency.

[0014] 2. The utility model uses an inert gas pipe arranged on the catalyst input pipe to blow out a high-flow inert gas after the reaction is completed, and blows out the liquid in the hemispherical cover after the reaction, thereby ensuring the cleanliness of the inner cavity of the hemispherical cover and facilitating the subsequent reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a highly efficient mixing and reaction integrated device for preparing hexanediol.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] Figure 3 It is a structural schematic diagram of the tank body and hemispherical cover of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the guide tube and the eversion guide cover of the utility model.

[0019] In the attached figure: 1. tank body; 2. conical upper cover; 3. conical bottom cover; 4. discharge pipe; 5. catalyst input pipe; 6. feed pipe; 7. inert gas pipe; 8. hemispherical cover; 9. expansion sleeve; 10. conical filter screen cover; 11. guide pipe; 12. outward-turned guide cover; 13. discharge chute; 14. discharge pipe. DETAILED DESCRIPTION

[0020] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0021] Embodiment 1:

[0022] See also Figure 1-4 Structural schematic diagram, the utility model provides the following technical solutions:

[0023] Specifically, it refers to a high-efficiency mixing and reaction integrated equipment for preparing hexanediol, comprising a tank body 1 and a conical upper cover 2 and a conical bottom cover 3 respectively fixed at the top and bottom of the tank body 1, a discharge pipe 4 with a first valve is penetrated at the bottom of the conical bottom cover 3, the first valve on the discharge pipe 4 is a two-position three-way solenoid valve, the discharge pipe 4 is Y-shaped, a catalyst input pipe 5 extending into the tank body 1 is penetrated on the conical upper cover 2, a feed pipe 6 coaxial with the catalyst input pipe 5 is penetrated horizontally on the catalyst input pipe 5, and an inert gas pipe 7 coaxial with the catalyst input pipe 5 is penetrated vertically on the catalyst input pipe 5. The inert gas pipe 7 is connected to an external inert gas storage tank.

[0024] A hemispherical cover 8 cooperating with the catalyst input pipe 5 is fixed on the top of the tank body 1; an expansion sleeve 9 is provided at one end of the catalyst input pipe 5 located inside the tank body 1, and the output end of the expansion sleeve 9 extends to the center of the hemispherical cover 8; a conical filter screen cover 10 extending into the interior of the tank body 1 and cooperating with the inner cavity of the tank body 1 is fixed on the bottom of the tank body 1.

[0025] A discharge pipe 14 with a second valve and connected to the conical filter screen cover 10 is fixed at the bottom end of the conical filter screen cover 10. The discharge end of the discharge pipe 14 passes through the conical bottom cover 3 and extends to the outside of the conical bottom cover 3. The discharge pipe 14 is used to discharge the catalyst powder after the reaction, which can be recycled after simple cleaning and drying to reduce production costs.

[0026] The working principle of the high-efficiency mixing and reaction integrated equipment for preparing hexanediol provided by the utility model is as follows:

[0027] Working principle: a high-flow rate mixed reaction liquid is input through the feed pipe 6. When the high-speed liquid is sprayed from the output end of the feed pipe 6 to the inside of the catalyst input pipe 5, a negative pressure chamber is formed inside the catalyst input pipe 5. The catalyst powder used for the catalytic reaction is adsorbed into the catalyst input pipe 5 from the input end of the catalyst input pipe 5 under the action of negative pressure. After the catalyst powder is mixed with the sprayed mitigating liquid, it is input to the expansion sleeve 9. Due to the sudden enlargement of the space, the reaction liquid mixed with the catalyst powder is atomized into small particles, which are fully mixed with the catalyst powder, and then input into the hemispherical cover 8 for continuous reaction. When the reaction is completed, a high-pressure and high-flow rate inert gas is input through the inert gas pipe 7 to blow out the material in the hemispherical cover 8. After the reaction contact, the liquid mixed with the catalyst powder enters the tank body 1. Under the action of the conical filter mesh cover 10, the liquid is separated from the catalyst powder. The separated catalyst powder is discharged through the discharge pipe 14 and can be recycled. The reacted liquid is discharged through the discharge pipe 4.

[0028] Embodiment 2:

[0029] Based on the specific embodiment 1, the difference of this embodiment is that:

[0030] like Figure 2-4 As shown, a guide tube 11 extending to the inner bottom of the hemispherical cover 8 is fixed to the bottom end of the expansion sleeve 9, and an outward-turned guide cover 12 matching the inner spherical surface of the hemispherical cover 8 is fixed to the output end of the guide tube 11. The outward-turned guide cover 12 is coaxial with the hemispherical cover 8. When the inert gas is input, the gas can flow along the inner spherical surface of the hemispherical cover 8 to promote the mixed liquid and catalyst powder inside the hemispherical cover 8, so that the inside of the hemispherical cover 8 remains clean, which is convenient for the subsequent reaction to be carried out again.

[0031] A discharge trough 13 connected to the inner cavity of the hemispherical cover 8 is provided on the outer circumferential surface of the hemispherical cover 8 near the top opening. The liquid after the reaction under the impact of the inert gas is discharged into the tank body 1 through the discharge trough 13 and the top opening of the hemispherical cover 8.

[0032] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A highly efficient mixing and reaction integrated device for preparing hexanediol, comprising a tank body (1) and a conical upper cover (2) and a conical bottom cover (3) respectively fixed to the top and bottom ends of the tank body (1), wherein a discharge pipe (4) with a first valve runs through the bottom of the conical bottom cover (3), characterized in that: The conical upper cover (2) is penetrated by a catalyst input pipe (5) extending into the tank body (1); the catalyst input pipe (5) is horizontally penetrated by a feed pipe (6) coaxial with the catalyst input pipe (5); and the catalyst input pipe (5) is vertically penetrated by an inert gas pipe (7) coaxial with the catalyst input pipe (5); A hemispherical cover (8) matched with the catalyst inlet pipe (5) is fixed on the top of the tank body (1); An expansion sleeve (9) is provided at one end of the catalyst input pipe (5) located inside the tank body (1), and the output end of the expansion sleeve (9) extends to the center of the hemispherical cover (8); A conical filter screen cover (10) is fixed to the inner bottom of the tank body (1), extending into the interior of the tank body (1) and cooperating with the inner cavity of the tank body (1).

2. The high-efficiency mixing and reaction integrated equipment for preparing hexanediol according to claim 1, characterized in that: The first valve on the discharge pipe (4) is a two-position three-way solenoid valve, and the discharge pipe (4) is Y-shaped.

3. The high-efficiency mixing and reaction integrated equipment for preparing hexanediol according to claim 1, characterized in that: A guide tube (11) extending to the inner bottom of the hemispherical cover (8) is fixed to the bottom end of the expansion sleeve (9), and an outward-turned guide cover (12) matching the inner spherical surface of the hemispherical cover (8) is fixed to the output end of the guide tube (11).

4. The high-efficiency mixing and reaction integrated equipment for preparing hexanediol according to claim 1, characterized in that: A discharge trough (13) communicating with the inner cavity of the hemispherical cover (8) is provided on the outer circumferential surface of the hemispherical cover (8) at a position close to the top opening.

5. The high-efficiency mixing and reaction integrated equipment for preparing hexanediol according to claim 1, characterized in that: A discharge pipe (14) having a second valve and communicating with the conical filter screen (10) is fixed at the bottom end of the conical filter screen (10); the discharge end of the discharge pipe (14) passes through the conical bottom cover (3) and extends to the outside of the conical bottom cover (3).

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