Novel reactor device for liquid-phase furfuryl alcohol

Abstract

The utility model discloses a novel reactor device for liquid-phase furfuryl alcohol, and relates to the technical field of furfuryl alcohol production equipment. The reactor comprises a reactor main body, a microporous plate, a gas conveying hopper and a fixed shaft, a spiral blade is fixed at the lower part of the inner wall of the reactor main body, the fixed shaft is fixed on the spiral blade along the central axis, the microporous plate is fixed at the edge of the lower part of the inner wall of the reactor main body, and the gas conveying hopper is fixed at the bottom end of the reactor main body. Through the arrangement of the reactor main body, the microporous plate, the gas conveying hopper and the fixed shaft, the problems that gas flow entering the reactor flows unevenly on an interface, reaction unevenness is easily caused, injection jet flow is generated after gas is directly injected, and irregular vortexes in the jet flow can cause catalyst precipitation are solved; the reactor has the advantages that airflow entering the reactor flows more uniformly on an interface, the reaction is more uniform, and irregular vortexes cannot be generated after gas enters the reactor, so that the precipitation of a catalyst is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of furfuryl alcohol production equipment, in particular to a new type of liquid-phase furfuryl alcohol reactor device. Background Art

[0002] Furfuryl alcohol, an important and versatile organic chemical raw material, can be effectively converted into a variety of high-value chemicals, such as furfural resin, urea-formaldehyde resin, phenolic resin, fruit acid, plasticizer, and rocket fuel. High-pressure liquid-phase hydrogenation is the main method commonly used in China to hydrogenate furfural to furfuryl alcohol. This method suspends the catalyst in furfural and hydrogenates at medium or high pressure at 180 to 220°C. The device used is generally a tubular reactor. The resulting furfuryl alcohol is of high quality, has high yield, few side reactions, and low process costs. However, in actual use, it still has the following disadvantages:

[0003] The high pressure required for furfuryl alcohol production places high demands on equipment and poses safety risks. The airflow entering the catalyst reactor is ejected at a high velocity from the top nozzle or slot of the inlet pipe, exchanging kinetic energy. This results in uneven distribution of gas flow at the interface, leading to an uneven reaction.

[0004] When hydrogen is sprayed in, due to the ejection effect, channels and dead corners appear in the reactor. Due to the lateral pulsation and ejection effect of the turbulent flow, irregular vortices appear at the edge of the jet. These channels, dead corners and irregular vortices cause the catalyst to deposit in the reactor. Utility Model Content

[0005] The purpose of the utility model is to provide a new type of reactor device for liquid-phase furfuryl alcohol. By arranging a reactor body, a microporous plate, a gas hopper and a fixed shaft, the utility model solves the problems that the airflow entering the reactor flows unevenly on the interface, which easily causes uneven reaction, and the irregular vortex in the jet generated by the direct injection of gas will cause catalyst precipitation.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model discloses a novel liquid-phase furfuryl alcohol reactor device, comprising a reactor body, a microporous plate, a gas hopper and a fixed shaft. A spiral blade is fixed to the lower portion of the inner wall of the reactor body, the spiral blade is fixed to the fixed shaft along the central axis, the microporous plate is fixed to the edge of the lower portion of the inner wall of the reactor body, and the gas hopper is fixed to the bottom end of the reactor body. When working, the reactor body provides space for the reaction of furfural and catalyst with hydrogen, the microporous plate allows bubbles to be uniformly transported to the material in the reactor body, the gas hopper transports hydrogen to the microporous plate, and the fixed shaft increases the central strength of the spiral blade.

[0008] Furthermore, a mixed liquid inlet is fixedly connected to the lower portion of the outer peripheral surface of the reactor body, and the mixed liquid inlet is arranged between the spiral blade and the microporous plate. The suspension obtained by mixing furfural and catalyst is input into the reactor body through the mixed liquid inlet.

[0009] Furthermore, a plurality of concentric conical plates are fixed to the bottom of the microporous plate, the centers of the top ends of the concentric conical plates coincide with each other and the centers of the bottom ends of the concentric conical plates also coincide with each other. The concentric conical plates are arranged in the gas hopper, and the hydrogen transported in the gas hopper is evenly transported to the bottom of the microporous plate through the concentric conical plates, so that tiny hydrogen bubbles are generated in the reactor body to react with furfural.

[0010] Furthermore, the bottom end of the gas hopper is fixedly connected to a gas pipe, and a welding plate 2 is fixed at the lower edge of the gas pipe. The gas hopper transports hydrogen into it through the gas pipe, and is welded and fixed to the external hydrogen delivery pipeline through the welding plate 2.

[0011] Furthermore, a rotating shaft is fixed to the top of the fixed shaft, and rotating blades are fixed in a ring array around the rotating shaft. The fixed shaft is connected to the rotating blades through the rotation of the rotating shaft, and the rotating blades rotate to further stir the reaction mixture.

[0012] Furthermore, a guide block is fixed to the upper portion of the inner wall of the reactor body, and a tapered opening is provided through the guide block. The reactor guides the mixed liquid through the tapered opening on the guide block.

[0013] Furthermore, the top of the reactor body is fixedly connected to a crude alcohol outlet, and a welding plate 1 is fixed around the crude alcohol outlet. The reactor body transports the reacted mixed liquid to the next processing equipment through the crude alcohol outlet.

[0014] The utility model has the following beneficial effects:

[0015] The utility model solves the problem that the airflow entering the reactor flows unevenly on the interface, which easily causes uneven reaction, by arranging a reactor main body, a microporous plate and a gas hopper. Furfural and catalyst are transported to the reactor main body through a mixed liquid inlet, and at the same time, an external hydrogen transport pipeline transports hydrogen to the gas hopper. When the hydrogen passes through the gas hopper, it is uniformly dispersed and transported to the microporous plate through the concentric cone plates in the gas hopper. After tiny and dense bubbles are generated by the microporous plate, they are uniformly transported to the furfural and catalyst mixed liquid in the reactor main body. The airflow entering the reactor acts in the form of uniform tiny bubbles, and the reaction is more uniform.

[0016] The utility model solves the problem that an induced jet is generated after gas is directly injected into the reactor during operation, and irregular vortices in the jet may cause catalyst precipitation by arranging a reactor main body and a fixed shaft. When the mixed liquid rises in the spiral blades to above the spiral blades, after the mixed liquid is transported to the rotating blades by the rising vortex on the spiral blades, the rotating blades and the rotating shaft are driven to rotate, and the mixed liquid is further turned over, so that the mixed liquid rises and reacts to generate furfuryl alcohol and by-products. Then the furfuryl alcohol and by-products rise, and after the mixed liquid is concentrated through the tapered opening at the bottom of the guide block, it rises to the crude alcohol outlet. The spiral blades and the rotating blades cooperate with each other, so that when the reactor is working, the mixed liquid flows more evenly, and catalyst precipitation is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a partially cutaway structural perspective diagram of a new type of liquid furfuryl alcohol reactor device;

[0019] Figure 2 It is a sectional structural stereogram of the reactor main body;

[0020] Figure 3 It is a three-dimensional diagram of the cross-sectional structure of the microplate;

[0021] Figure 4 This is a three-dimensional diagram of the gas hopper structure;

[0022] Figure 5 It is a three-dimensional diagram of the fixed shaft structure;

[0023] Figure 6 This is a three-dimensional diagram of the complete structure of a new liquid-phase furfuryl alcohol reactor device.

[0024] Reference numerals:

[0025] 1. Reactor body; 101. Mixed liquor inlet; 102. Guide block; 103. Crude alcohol outlet; 104. Welding plate 1; 105. Conical mouth; 2. Microporous plate; 201. Concentric conical plate; 3. Gas hopper; 301. Gas pipe; 302. Welding plate 2; 4. Fixed shaft; 401. Rotating shaft; 402. Rotating blades; 403. Spiral blades. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiment 1

[0027] See also Figure 1-6 The utility model is a new type of liquid-phase furfuryl alcohol reactor device, comprising a reactor body 1, a microporous plate 2, a gas hopper 3 and a fixed shaft 4. A spiral blade 403 is fixed to the lower part of the inner wall of the reactor body 1. After the solid mixed liquid inlet 101 of furfural and catalyst liquid is input into the reactor body 1, the solid mixed liquid is mixed and ascended through the spiral blade 403, so that the mixed liquid and the tiny hydrogen bubbles that penetrate the microporous plate 2 are fully mixed and ascended. The spiral blade 403 is fixed with the fixed shaft 4 along the central axis. The spiral blade 403 increases the central strength through the fixed shaft 4. The microporous plate 2 is fixed at the edge of the lower part of the inner wall of the reactor body 1. When hydrogen is transported through the microporous plate 2, the hydrogen bubbles are evenly dispersed into the reactor body 1. The bottom end of the reactor body 1 is fixed with a gas hopper 3, and the hydrogen is transported and ascended to the microporous plate 2 through the gas hopper 3.

[0028] Specifically, the lower portion of the outer peripheral surface of the reactor body 1 is fixedly connected with a mixed liquid inlet 101, which is arranged between the spiral blade 403 and the microporous plate 2. The reactor body 1 transports furfural and catalyst solid-liquid mixed liquid inlet 101 therein.

[0029] Furthermore, a plurality of concentric conical plates 201 are fixed to the bottom of the microporous plate 2, the centers of the top ends of the concentric conical plates 201 coincide with each other and the centers of the bottom ends also coincide with each other, and the concentric conical plates 201 are arranged in the gas hopper 3. The microporous plate 2 uses the concentric conical plates 201 to evenly distribute the hydrogen input into the gas hopper 3 by the gas pipe 301 and transport it to the bottom of the microporous plate 2.

[0030] Furthermore, the bottom end of the gas hopper 3 is fixedly connected to the gas pipe 301, and a welding plate 2 302 is fixed at the lower edge of the side of the gas pipe 301. The gas pipe 301 and the welding structure on the hydrogen transport pipeline are welded together through the welding plate 2 302, so that the hydrogen transported in the external hydrogen transport pipeline is transported to the gas pipe 301 and then transported to the gas hopper 3 through the gas pipe 301.

[0031] The operating process of this embodiment is as follows: during operation, furfural and catalyst are first delivered to the reactor body 1 through the mixed liquid inlet 101, and at the same time, the external hydrogen delivery pipeline delivers hydrogen to the gas hopper 3. When the hydrogen passes through the gas hopper 3, it is evenly dispersed and delivered to the microporous plate 2 through the concentric conical plates 201 in the gas hopper 3. After generating tiny and fine bubbles through the microporous plate 2, the bubbles are evenly delivered to the furfural and catalyst mixed liquid in the reactor body 1. When the mixed liquid rises, it rises through the spiral blade 403. During the rising process of the spiral blade 403, the mixed liquid is further mixed evenly. Specific embodiment 2

[0032] See also Figure 1 、 2 5. On the basis of the specific embodiment 1, a rotating shaft 401 is fixed to the top of the fixed shaft 4, and rotating blades 402 are fixed in a ring array on the circumference of the rotating shaft 401. The fixed shaft 4 is connected to the rotating blades 402 through the rotating shaft 401. When the mixed liquid rises on the spiral blades 403 and is transported to the rotating blades 402, it drives the rotating blades 402 and the rotating shaft 401 to rotate, further turning the mixed liquid, causing the mixed liquid to rise and react to generate furfuryl alcohol and by-products.

[0033] Specifically, a guide block 102 is fixed to the upper part of the inner wall of the reactor body 1 , and a tapered opening 105 is opened through the guide block 102 . After the mixed liquid is collected by the reactor body 1 through the tapered opening 105 at the bottom of the guide block 102 , it rises to the crude alcohol outlet 103 .

[0034] Furthermore, the top of the reactor body 1 is fixedly connected to a crude alcohol outlet 103, and a welding plate 104 is fixed on the peripheral side of the crude alcohol outlet 103. The welding plate 104 is attached to the mounting plate of the external crude alcohol output pipeline, so that the crude alcohol and the output pipeline are fully connected. The crude alcohol concentrated in the reactor body 1 through the tapered mouth 105 rises to the crude alcohol outlet 103, and is then transported to the next external processing equipment through the crude alcohol outlet 103.

[0035] The operating process of this embodiment is as follows: during operation, when the mixed liquid rises in the spiral blade 403 to the top of the spiral blade 403, when the mixed liquid is transported to the rotating blade 402 by the rising vortex on the spiral blade 403, the rotating blade 402 and the rotating shaft 401 are driven to rotate, further turning the mixed liquid, causing the mixed liquid to rise and react to generate furfuryl alcohol and by-products. Then, the furfuryl alcohol and by-products rise, and after the mixed liquid is concentrated through the tapered port 105 at the bottom of the guide block 102, it rises to the crude alcohol outlet 103. The crude alcohol concentrated in the reactor body 1 through the tapered port 105 rises to the crude alcohol outlet 103, and is then transported to the next external processing equipment through the crude alcohol outlet 103.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A novel liquid-phase furfuryl alcohol reactor device, comprising a reactor body (1), a microporous plate (2), a gas hopper (3) and a fixed shaft (4), characterized in that: A spiral blade (403) is fixed to the lower portion of the inner wall of the reactor body (1), a fixed shaft (4) is fixed to the spiral blade (403) along the central axis, a microporous plate (2) is fixed to the edge of the lower portion of the inner wall of the reactor body (1), and a gas hopper (3) is fixed to the bottom end of the reactor body (1).

2. A novel liquid-phase furfuryl alcohol reactor device according to claim 1, characterized in that: The lower portion of the outer peripheral surface of the reactor body (1) is fixedly connected to a mixed liquid inlet (101), and the mixed liquid inlet (101) is arranged between the spiral blade (403) and the microporous plate (2).

3. A novel liquid-phase furfuryl alcohol reactor device according to claim 1, characterized in that: A plurality of concentric conical plates (201) are fixed to the bottom of the microporous plate (2), the centers of the top ends of the concentric conical plates (201) coincide with each other, and the centers of the bottom ends of the concentric conical plates (201) also coincide with each other, and the concentric conical plates (201) are arranged in the gas conveying hopper (3).

4. A novel liquid-phase furfuryl alcohol reactor device according to claim 1, characterized in that: The bottom end of the gas delivery hopper (3) is fixedly connected to a gas delivery pipe (301), and a second welding plate (302) is fixed to the lower edge of the circumference of the gas delivery pipe (301).

5. A novel liquid-phase furfuryl alcohol reactor device according to claim 1, characterized in that: A rotating shaft (401) is fixed to the top end of the fixed shaft (4), and rotating blades (402) are fixed to the circumference of the rotating shaft (401) in an annular array.

6. A novel liquid-phase furfuryl alcohol reactor device according to claim 1, characterized in that: A guide block (102) is fixed to the upper portion of the inner wall of the reactor body (1), and a tapered opening (105) is provided through the guide block (102).

7. A novel liquid-phase furfuryl alcohol reactor device according to claim 1, characterized in that: The top of the reactor body (1) is fixedly connected to a crude alcohol outlet (103), and a welding plate 1 (104) is fixed to the peripheral side of the crude alcohol outlet (103).

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