Methyl acetate hydrogenation reactor

Abstract

The utility model discloses a methyl acetate hydrogenation reactor and belongs to the field of hydrogenation reaction equipment. The method is used for solving the problems that rapid diffusion of hydrogen is difficult to realize and a solution is difficult to uniformly mix. A shell is fixedly installed on one side of the fixed tank, a liquid pumping pipe is fixedly installed on one side of the shell, one end of the liquid pumping pipe extends into the fixed tank, a liquid outlet pipe is fixedly installed on the top of the shell, a transverse pipe is fixedly installed on the top of the fixed tank, a plurality of water outlets are formed in the bottom of the transverse pipe, and the transverse pipe is fixedly connected with the liquid outlet pipe. An air inlet assembly is fixedly mounted in the fixed tank; hydrogen is conveyed into the cavity through the gas inlet pipe, enters the fixed tank through the multiple guide blocks and is divided into multiple strands through the multiple guide blocks, the bubble diameter is effectively reduced, the hydrogen diffusion efficiency is effectively improved, rapid diffusion of the hydrogen is achieved, a solution at the bottom is sprayed through the water outlet, and the hydrogen diffusion efficiency is improved. Therefore, uniform mixing of the solution is realized.

Description

Technical Field

[0001] The utility model relates to the field of hydrogenation reaction equipment, in particular to a methyl acetate hydrogenation reactor. Background Art

[0002] Methyl acetate is a common organic compound, also known as ethyl formate or methyl formate. Methyl acetate is an ester compound formed by the reaction of methanol and acetic acid under acidic conditions. In the production and processing of methyl acetate, a hydrogenation reactor is usually required to produce a hydrogenation reaction to produce different products.

[0003] However, in the process of using the hydrogenation reactor in the prior art, the diameter of the bubbles formed by the directly injected hydrogen in the solution is generally large, resulting in a small contact area between the unit volume of hydrogen and the solution, which undoubtedly affects the diffusion efficiency of the hydrogen, thereby seriously affecting the hydrogenation reaction of the solution, and it is difficult to achieve rapid diffusion of hydrogen;

[0004] Furthermore, in actual use, hydrogen is usually introduced into a part of the solution through a pipeline, which results in the hydrogen being unable to be uniformly mixed with the entire solution, thereby causing an incomplete reaction and making it difficult to uniformly mix the solution;

[0005] In view of the above technical defects, a solution is now proposed. Utility Model Content

[0006] The utility model aims to provide a methyl acetate hydrogenation reactor, which realizes rapid diffusion of hydrogen and uniform mixing of solution by means of an air inlet assembly and a cross pipe, so as to solve the technical defects proposed by the background technology.

[0007] The purpose of the utility model can be achieved through the following technical scheme: a methyl acetate hydrogenation reactor, comprising a fixed tank, a liquid inlet pipe is fixedly installed on one side of the fixed tank, a shell is fixedly installed on one side of the fixed tank, a liquid extraction pipe is fixedly installed on one side of the shell, one end of the liquid extraction pipe extends to the inside of the fixed tank, a liquid outlet pipe is fixedly installed on the top of the shell, a cross pipe is fixedly installed on the top of the fixed tank, a plurality of water outlets are provided at the bottom of the cross pipe, the cross pipe is fixedly connected to the liquid outlet pipe, an air intake assembly is fixedly installed inside the fixed tank, the air intake assembly is located at the bottom of the fixed tank, an air intake pipe is fixedly installed at the bottom of the air intake assembly, a catalytic plate is movably installed inside the fixed tank, the air intake assembly comprises a fixed block and a guide block, a cavity is provided inside the fixed block, a plurality of guide blocks are provided, and the guide block is fixedly installed on the top of the fixed block.

[0008] Preferably, the cross section of the guide block is a trapezoid that is small at the top and large at the bottom, a guide cavity is provided inside the guide block, an air outlet is provided at the top of the guide block, and the guide cavity is connected to the cavity.

[0009] Preferably, a guide bar is fixedly mounted on the inner wall of the guide cavity, and the guide bar is spirally arranged inside the guide block.

[0010] Preferably, a rotating rod is movably installed inside the fixed tank, a rotating nut is movably installed on the rotating rod through a thread, and the rotating nut is fixedly connected to the catalyst plate.

[0011] Preferably, a bevel gear 1 is fixedly installed on the top of the rotating rod, a cross bar is movably installed on the inner wall of the fixed tank, a bevel gear 2 is fixedly installed on the end of the cross bar, and the bevel gear 2 is meshingly connected with the bevel gear 1.

[0012] The beneficial effects of the utility model are as follows:

[0013] (1) The utility model uses an air intake assembly to transport hydrogen into the cavity through an air intake pipe. The hydrogen enters the interior of the fixed tank through multiple guide blocks. The hydrogen is divided into multiple streams through the multiple guide blocks, which effectively reduces the bubble diameter. At the same time, the cross-section of the guide block is a trapezoid with a small top and a large bottom. When the hydrogen passes through the guide block, a narrow tube effect is generated, thereby increasing the hydrogen flow rate, effectively improving the hydrogen diffusion efficiency, and realizing the rapid diffusion of hydrogen;

[0014] (2) The utility model uses a shell and a transverse tube in combination to extract the solution at the bottom of the fixed tank into the transverse tube at the top of the fixed tank through a liquid extraction tube, and then sprays it out from the water outlet at the bottom of the transverse tube, so that the solution is fully mixed with the hydrogen inside the fixed tank, further improving the diffusion rate of hydrogen. At the same time, the lower layer solution is sprayed to the upper layer to achieve uniform mixing of the solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings;

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the air intake assembly in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the guide block in the utility model;

[0019] Figure 4 It is a cross-sectional view of the air intake assembly in the utility model;

[0020] Figure 5 It is a cross-sectional view of the fixed tank in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the rotating rod in the utility model.

[0022] Legend: 1. Fixed tank; 101. Liquid inlet pipe; 102. Catalytic plate; 103. Rotating rod; 104. Rotating nut; 105. Bevel gear one; 106. Cross bar; 107. Bevel gear two; 2. Shell; 201. Liquid extraction pipe; 202. Liquid outlet pipe; 203. Cross pipe; 204. Water outlet; 3. Air intake assembly; 301. Fixed block; 302. Guide block; 303. Cavity; 304. Guide cavity; 305. Air outlet; 306. Guide strip; 4. Air intake pipe. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1:

[0025] This embodiment is used to solve the problem that the diameter of bubbles formed by directly injected hydrogen in the solution is generally large, resulting in a small contact area between unit volume of hydrogen and solution, which undoubtedly affects the diffusion efficiency of hydrogen, thereby seriously affecting the hydrogenation reaction of the solution and making it difficult to achieve rapid diffusion of hydrogen.

[0026] See also Figure 1 - Figure 4 As shown, this embodiment is a methyl acetate hydrogenation reactor, comprising a fixed tank 1, a liquid inlet pipe 101 is fixedly installed on one side of the fixed tank 1, an air intake assembly 3 is fixedly installed inside the fixed tank 1, the air intake assembly 3 is located at the bottom of the fixed tank 1, an air intake pipe 4 is fixedly installed at the bottom of the air intake assembly 3, a catalytic plate 102 is movably installed inside the fixed tank 1, the air intake assembly 3 comprises a fixed block 301 and a guide block 302, a cavity 303 is arranged inside the fixed block 301, a plurality of guide blocks 302 are arranged, and the guide block 302 is fixedly installed on the top of the fixed block 301.

[0027] The cross section of the guide block 302 is a trapezoid that is small at the top and large at the bottom. A guide cavity 304 is arranged inside the guide block 302. An air outlet 305 is opened on the top of the guide block 302. The guide cavity 304 is connected to the cavity 303. A guide bar 306 is fixedly installed on the inner wall of the guide cavity 304. The guide bar 306 is spirally arranged inside the guide block 302. When hydrogen passes through the guide cavity 304, the spirally arranged guide bar 306 drives the hydrogen gas to rotate upward and enter the solution through the air outlet 305. The flowing hydrogen gas drives the bottom solution to flow, thereby increasing the contact area between the hydrogen and the solution.

[0028] Hydrogen is transported to the cavity 303 through the air inlet pipe 4, and enters the interior of the fixed tank 1 through multiple guide blocks 302. The hydrogen is divided into multiple streams through the multiple guide blocks 302, which effectively reduces the bubble diameter. At the same time, the cross-section of the guide block 302 is a trapezoid with a small top and a large bottom. When the hydrogen passes through the guide block 302, a narrow tube effect is generated, thereby increasing the hydrogen flow rate, effectively improving the hydrogen diffusion efficiency, and realizing the rapid diffusion of hydrogen.

[0029] Embodiment 2:

[0030] This embodiment is used to solve the problem that in actual use, hydrogen is usually introduced partially into the solution through a pipeline, resulting in the inability of the hydrogen to be uniformly mixed with the entire solution, which in turn leads to an insufficient reaction and difficulty in uniformly mixing the solution.

[0031] See also Figure 5 - Figure 6 As shown, the utility model also includes a shell 2, which is fixedly installed on one side of the fixed tank 1, and a liquid extraction pipe 201 is fixedly installed on one side of the shell 2, one end of the liquid extraction pipe 201 extends to the inside of the fixed tank 1, and a liquid outlet pipe 202 is fixedly installed on the top of the shell 2, and a transverse pipe 203 is fixedly installed on the top of the fixed tank 1, and a plurality of water outlets 204 are provided at the bottom of the transverse pipe 203, and the transverse pipe 203 is fixedly connected to the liquid outlet pipe 202, wherein a water pump is fixedly installed inside the shell 2, which is used to extract the liquid inside the fixed tank 1 into the liquid outlet pipe 202 through the liquid extraction pipe 201, and then into the transverse pipe 203.

[0032] A rotating rod 103 is movably installed inside the fixed tank 1, and a rotating nut 104 is movably installed on the rotating rod 103 through a thread, and the rotating nut 104 is fixedly connected to the catalytic plate 102. A bevel gear 105 is fixedly installed on the top of the rotating rod 103, and a cross bar 106 is movably installed on the inner wall of the fixed tank 1, and a bevel gear 2 107 is fixedly installed at the end of the cross bar 106. The bevel gear 2 107 is meshingly connected with the bevel gear 105. A slider is fixedly installed on the end of the catalytic plate 102 away from the rotating rod 103, and a slide groove is opened on the inner wall of the fixed tank 1, and the slider is movably installed in the slide groove.

[0033] By rotating the cross bar 106 and utilizing the transmission cooperation of bevel gear 105 and bevel gear 2 107, the rotating nut 104 is driven to move, wherein the rotating rod 103 is specifically a screw rod, and a thread is provided on the rotating rod 103. A screw rod transmission structure is formed by the thread and the rotating nut 104, wherein the thread is not drawn in the figure. When the rotating nut 104 moves, the catalytic plate 102 is driven to move, thereby adjusting the position of the catalytic plate 102 to adapt to various processing conditions.

[0034] The solution at the bottom of the fixed tank 1 is extracted into the top transverse tube 203 of the fixed tank 1 through the liquid extraction pipe 201, and then sprayed out from the water outlet 204 at the bottom of the transverse tube 203, so that the solution is fully mixed with the hydrogen inside the fixed tank 1, further improving the hydrogen diffusion rate, and at the same time, the lower layer solution is sprayed to the upper layer to achieve uniform mixing of the solution.

[0035] In combination with Example 1 and Example 2, hydrogen is transported into the cavity 303 through the air inlet pipe 4, and the hydrogen enters the interior of the fixed tank 1 through multiple guide blocks 302. The hydrogen is divided into multiple streams through the multiple guide blocks 302, which effectively reduces the bubble diameter. At the same time, the cross-section of the guide block 302 is a trapezoid with a small top and a large bottom. When the hydrogen passes through the guide block 302, a narrow tube effect is generated, thereby increasing the hydrogen flow rate, effectively improving the hydrogen diffusion efficiency, and realizing rapid diffusion of hydrogen. The bottom solution is sprayed through the water outlet 204, so that the solution is fully mixed with the hydrogen inside the fixed tank 1, further improving the hydrogen diffusion rate, and at the same time, the lower layer solution is sprayed to the upper layer to achieve uniform mixing of the solution.

[0036] The working process and principle of the utility model are as follows:

[0037] First, hydrogen is transported into the cavity 303 through the air inlet pipe 4, and the hydrogen enters the interior of the fixed tank 1 through the multiple guide blocks 302. The hydrogen is divided into multiple streams through the multiple guide blocks 302, effectively reducing the bubble diameter;

[0038] Meanwhile, the cross section of the guide block 302 is a trapezoid with a small top and a large bottom. When hydrogen passes through the guide block 302, a narrow tube effect is generated, thereby increasing the hydrogen flow rate, effectively improving the hydrogen diffusion efficiency, and achieving rapid hydrogen diffusion.

[0039] Furthermore, the bottom solution is sprayed through the water outlet 204, so that the solution is fully mixed with the hydrogen inside the fixed tank 1, further improving the hydrogen diffusion rate, and at the same time, the lower layer solution is sprayed to the upper layer to achieve uniform mixing of the solution;

[0040] In summary, the utility model realizes rapid diffusion of hydrogen and uniform mixing of the solution by providing the air intake assembly 3 and the cross pipe 203 .

[0041] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0043] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A methyl acetate hydrogenation reactor, comprising a fixed tank (1), characterized in that: A liquid inlet pipe (101) is fixedly mounted on one side of the fixed tank (1), a shell (2) is fixedly mounted on one side of the fixed tank (1), a liquid extraction pipe (201) is fixedly mounted on one side of the shell (2), one end of the liquid extraction pipe (201) extends into the interior of the fixed tank (1), and a liquid outlet pipe (202) is fixedly mounted on the top of the shell (2); A transverse pipe (203) is fixedly mounted on the top of the fixed tank (1); a plurality of water outlets (204) are provided at the bottom of the transverse pipe (203); the transverse pipe (203) is fixedly connected to the liquid outlet pipe (202); and an air intake assembly (3) is fixedly mounted inside the fixed tank (1); The air intake assembly (3) is located at the bottom of the fixed tank (1), an air intake pipe (4) is fixedly installed at the bottom of the air intake assembly (3), a catalytic plate (102) is movably installed inside the fixed tank (1), the air intake assembly (3) comprises a fixed block (301) and a guide block (302), a cavity (303) is arranged inside the fixed block (301), a plurality of guide blocks (302) are arranged, and the guide block (302) is fixedly installed on the top of the fixed block (301).

2. A methyl acetate hydrogenation reactor according to claim 1, characterized in that: The cross section of the guide block (302) is a trapezoid that is smaller at the top and larger at the bottom. A guide cavity (304) is provided inside the guide block (302). An air outlet (305) is provided at the top of the guide block (302). The guide cavity (304) is in communication with the cavity (303).

3. A methyl acetate hydrogenation reactor according to claim 2, characterized in that: A guide bar (306) is fixedly mounted on the inner wall of the guide cavity (304), and the guide bar (306) is spirally arranged inside the guide block (302).

4. A methyl acetate hydrogenation reactor according to claim 1, characterized in that: A rotating rod (103) is movably mounted inside the fixed tank (1), a rotating nut (104) is movably mounted on the rotating rod (103) via a thread, and the rotating nut (104) is fixedly connected to the catalyst plate (102).

5. A methyl acetate hydrogenation reactor according to claim 4, characterized in that: A bevel gear 1 (105) is fixedly mounted on the top of the rotating rod (103), a cross bar (106) is movably mounted on the inner wall of the fixed tank (1), a bevel gear 2 (107) is fixedly mounted on the end of the cross bar (106), and the bevel gear 2 (107) is meshingly connected with the bevel gear 1 (105).

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