Front mixing device of dimethyl ether and CO for methyl acetate processing

Abstract

The utility model discloses a front mixing device of dimethyl ether and CO for methyl acetate processing, and belongs to the field of mixing tanks. The problems that the mixing efficiency of materials is low, and bottom liquid materials are difficult to fully contact and mix with gas materials are solved. The top of the fixed tank is fixedly provided with a liquid inlet pipe, the bottom of the fixed tank is fixedly provided with a liquid outlet pipe, the fixed tank is fixedly provided with a plurality of air inlet pipes, the air inlet pipes are fixedly provided with a plurality of nozzles, and the fixed tank is internally and fixedly provided with a mixing assembly; liquid materials are dispersed through the dispersing plate, dispersed liquid collides with CO gas, the contact area of the liquid materials and the CO gas is effectively increased, the mixing efficiency of gas materials and the liquid materials is effectively improved, a solution at the bottom of the fixed tank is sprayed through the shell and the transverse pipe, and the mixing efficiency of the gas materials and the liquid materials is improved. The gas material and the liquid material are further mixed, and meanwhile, the liquid material and the gas material at the bottom of the fixed tank are fully contacted and mixed.

Description

Technical Field

[0001] The utility model relates to the field of mixing tanks, in particular to a pre-mixing device for dimethyl ether and CO used in the processing of methyl acetate. Background Art

[0002] Methyl acetate is an organic compound, commonly known as ethyl formate or methyl acetate. This compound is often used as a solvent and also has certain uses in chemical synthesis. Methyl acetate is usually produced through an esterification reaction, which is an acid-catalyzed reaction. This process involves reacting ethanol and acetic acid under acidic conditions to produce methyl acetate and water. Among them, the raw material ethanol is usually formed by a series of mixing processes of dimethyl ether and CO through a mixing device.

[0003] However, in the prior art, during the use of the mixing device, CO gas is usually directly introduced into the mixing device and dimethyl ether is stirred. However, after the CO gas is introduced into the dimethyl ether liquid material, bubbles are generated in the liquid, which results in a small contact area between the CO gas and the liquid material, and thus leads to a low mixing efficiency between the materials;

[0004] And when the bubbles move to the liquid surface and burst, at this time, the CO gas drifts above the liquid surface, and it is difficult for the bottom liquid material to directly contact the CO gas inside the device. After a certain period of stirring, the CO gas can be fully mixed with the bottom liquid material, and it is difficult to make the bottom liquid material and the gas material fully contact and mix;

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

[0006] The purpose of the utility model is to provide a pre-mixing device for dimethyl ether and CO used in the processing of methyl acetate. By setting a mixing component, while effectively improving the mixing efficiency of gas materials and liquid materials, the bottom liquid material and the gas material are fully contacted and mixed to solve the technical defects proposed in the background art.

[0007] The purpose of the utility model can be achieved by the following technical solutions: A pre-mixing device for dimethyl ether and CO used in the processing of methyl acetate, including a fixed tank, a liquid inlet pipe is fixedly installed at the top of the fixed tank, a liquid outlet pipe is fixedly installed at the bottom of the fixed tank, a plurality of gas inlet pipes are fixedly installed on the fixed tank, the gas inlet pipes extend into the fixed tank, a plurality of nozzles are fixedly installed on the gas inlet pipes, and a mixing component is fixedly installed inside the fixed tank;

[0008] The mixing component includes a fixing plate, a housing, and a dispersion plate. The dispersion plate is fixedly installed on the top of the fixing plate. The fixing plate is fixedly connected to the air inlet pipe. The housing is fixedly installed on one side of the fixed tank. One side of the housing is fixedly installed with a water suction pipe, and one end of the water suction pipe extends into the fixed tank. The top of the fixed tank is fixedly installed with a horizontal pipe. The top of the housing is fixedly installed with a connecting pipe, and the connecting pipe is fixedly connected to the horizontal pipe. A plurality of water outlet holes are opened at the bottom of the horizontal pipe;

[0009] A motor is fixedly installed on one side of the fixed tank away from the housing. A stirring shaft is movably installed inside the fixed tank, and one end of the stirring shaft is fixedly connected to the output end of the motor.

[0010] Preferably, a plurality of stirring rods are fixedly installed on the stirring shaft. There are three stirring rods, and the stirring rods are evenly distributed on the circumference of the stirring shaft.

[0011] Preferably, a plurality of guide plates are fixedly installed on the dispersion plate. The guide plates are evenly spaced apart, and a guide groove is formed by enclosing between the guide plates.

[0012] Preferably, there are three air inlet pipes, and the plurality of air inlet pipes are evenly spaced on the circumference of the fixing plate.

[0013] Preferably, a cavity is provided inside the fixing plate, and a defoaming plate I and a defoaming plate II are fixedly installed inside the cavity. The defoaming plate II is located above the defoaming plate I.

[0014] Preferably, both the defoaming plate I and the defoaming plate II are grid plates, and the pore diameter of the defoaming plate I is larger than that of the defoaming plate II.

[0015] The beneficial effects of the present utility model are as follows:

[0016] (1) Through the arrangement of the dispersion plate and the air inlet pipe in the present utility model, liquid material is conveyed into the fixed tank through the liquid inlet pipe. The liquid material first impacts on the dispersion plate, and the dispersion plate disperses the liquid material. At the same time, CO gas is conveyed into the fixed tank through the air inlet pipe. At this time, the dispersed liquid impacts with the CO gas, comes into contact and mixes, effectively increasing the contact area between the liquid material and the CO gas. After mixing, it falls to the bottom of the fixed tank, effectively improving the mixing efficiency of the gas material and the liquid material;

[0017] (2) Through the coordinated use of the housing and the horizontal pipe in the present utility model, during actual use, the solution is extracted into the horizontal pipe through the water suction pipe and then sprayed out through the water outlet holes at the bottom of the horizontal pipe, so as to extract and spray the solution at the bottom of the fixed tank. On the one hand, it further mixes the gas material and the liquid material, and on the other hand, it enables the liquid material and the gas material at the bottom of the fixed tank to fully contact and mix. Description of the Drawings

[0018] The following further describes the present utility model with reference to the drawings;

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is a cross-sectional view of the present utility model;

[0021] Figure 3 is a schematic structural view of the dispersion plate in the present utility model;

[0022] Figure 4 is a schematic structural view of the horizontal pipe in the present utility model;

[0023] Figure 5 is a schematic structural view of the first defoaming plate and the second defoaming plate in the present utility model.

[0024] Legend: 1. Fixed tank; 101. Liquid inlet pipe; 102. Liquid outlet pipe; 103. Air inlet pipe; 104. Nozzle; 2. Mixing assembly; 201. Fixed plate; 202. Housing; 203. Dispersion plate; 204. Water suction pipe; 205. Horizontal pipe; 206. Connecting pipe; 207. Water outlet hole; 208. Guide plate; 209. Guide groove; 210. Cavity; 211. First defoaming plate; 212. Second defoaming plate; 3. Motor; 301. Stirring shaft; 302. Stirring rod. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment 1:

[0027] This embodiment is used to solve the problem that in the prior art, during the use of a mixing device, CO gas is usually directly introduced into the mixing device and dimethyl ether is stirred. However, after the CO gas is introduced into the dimethyl ether liquid material, bubbles are generated in the liquid, which results in a small contact area between the CO gas and the liquid material, and thus a low mixing efficiency between the materials.

[0028] Please refer to Figure 1 - Figure 3As shown in the figure, this embodiment is a pre-mixing device for dimethyl ether and CO in the processing of methyl acetate, including a fixed tank 1. A liquid inlet pipe 101 is fixedly installed at the top of the fixed tank 1, and a liquid outlet pipe 102 is fixedly installed at the bottom of the fixed tank 1. A plurality of gas inlet pipes 103 are fixedly installed on the fixed tank 1, and the gas inlet pipes 103 extend into the interior of the fixed tank 1. A plurality of spray nozzles 104 are fixedly installed on the gas inlet pipes 103. A mixing component 2 is fixedly installed inside the fixed tank 1. The mixing component 2 includes a fixing plate 201 and a dispersion plate 203. The dispersion plate 203 is fixedly installed on the top of the fixing plate 201. A plurality of guide plates 208 are fixedly installed on the dispersion plate 203. The guide plates 208 are evenly spaced apart. A guide groove 209 is formed by enclosing between the guide plates 208. The fixing plate 201 is fixedly connected to the gas inlet pipes 103. There are three gas inlet pipes 103, and the plurality of gas inlet pipes 103 are evenly spaced on the circumference of the fixing plate 201.

[0029] Liquid materials are transported into the fixed tank 1 through the liquid inlet pipe 101. The liquid materials first impact on the dispersion plate 203, and the dispersion plate 203 disperses the liquid materials. At the same time, CO gas is transported into the fixed tank 1 through the gas inlet pipes 103. At this time, the dispersed liquid impacts with the CO gas, comes into contact and mixes, effectively increasing the contact area between the liquid materials and the CO gas. After mixing, it falls to the bottom of the fixed tank 1, effectively improving the mixing efficiency of the gas materials and the liquid materials.

[0030] A motor 3 is fixedly installed on one side of the fixed tank 1 away from the housing 202. A stirring shaft 301 is movably installed inside the fixed tank 1. One end of the stirring shaft 301 is fixedly connected to the output end of the motor 3. A plurality of stirring rods 302 are fixedly installed on the stirring shaft 301. There are three stirring rods 302, and the stirring rods 302 are evenly distributed on the circumference of the stirring shaft 301.

[0031] During actual use, the motor 3 is started to drive the stirring shaft 301 to rotate, and then the liquid materials are stirred by the stirring rods 302. Cooperating with the horizontal pipe 205, the mixing efficiency of the liquid materials and the gas materials is further improved.

[0032] Embodiment Two:

[0033] This embodiment is used to solve the problem that when the bubbles break after moving to the liquid surface, at this time the CO gas drifts above the liquid surface, and the bottom liquid materials are difficult to directly contact with the CO gas inside the device. After a certain period of stirring, the CO gas can be fully mixed with the bottom liquid materials, and it is difficult to make the bottom liquid materials and the gas materials fully contact and mix.

[0034] Please refer to Figure 4 - Figure 5As shown in the figure, the utility model further includes a housing 202, which is fixedly installed on one side of the fixed tank 1. One side of the housing 202 is fixedly installed with a water suction pipe 204, and one end of the water suction pipe 204 extends into the fixed tank 1. The top of the fixed tank 1 is fixedly installed with a horizontal pipe 205, and the top of the housing 202 is fixedly installed with a connecting pipe 206. The connecting pipe 206 is fixedly connected to the horizontal pipe 205. A plurality of water outlet holes 207 are opened at the bottom of the horizontal pipe 205. A water pump is fixedly installed inside the housing 202, which is used to pump the liquid inside the fixed tank 1 into the connecting pipe 206 through the water suction pipe 204, and then into the horizontal pipe 205.

[0035] During the actual use process, the solution is pumped into the horizontal pipe 205 through the water suction pipe 204, and then sprayed out through the water outlet holes 207 at the bottom of the horizontal pipe 205, so as to pump and spray the solution at the bottom of the fixed tank 1. On the one hand, it further mixes the gas material and the liquid material, and on the other hand, it makes the liquid material and the gas material at the bottom of the fixed tank 1 fully contact and mix.

[0036] A cavity 210 is arranged inside the fixing plate 201. An anti-foaming plate one 211 and an anti-foaming plate two 212 are fixedly installed inside the cavity 210. The anti-foaming plate two 212 is located above the anti-foaming plate one 211. Both the anti-foaming plate one 211 and the anti-foaming plate two 212 are grid plates, and the aperture of the anti-foaming plate one 211 is larger than that of the anti-foaming plate two 212.

[0037] During the mixing process of the mixed material, foam is generated on the liquid surface. When the foam enters the fixing plate 201, it first contacts the anti-foaming plate one 211, and the anti-foaming plate one 211 with larger pores is used to preliminarily eliminate the bubbles. Then, the anti-foaming plate two 212 with smaller pores is used to further eliminate the bubbles, so as to clean the bubbles generated during the work and avoid affecting the material mixing.

[0038] Combining Embodiment 1 and Embodiment 2, liquid material is transported into the fixed tank 1 through the liquid inlet pipe 101. The liquid material first impacts on the dispersion plate 203, and the liquid material is dispersed by the dispersion plate 203. The dispersed liquid impacts on the CO gas, effectively increasing the contact area between the liquid material and the CO gas, effectively improving the mixing efficiency of the gas material and the liquid material. At the same time, the solution is pumped into the horizontal pipe 205 through the water suction pipe 204, and then sprayed out through the water outlet holes 207 at the bottom of the horizontal pipe 205, so as to pump and spray the solution at the bottom of the fixed tank 1, further mixing the gas material and the liquid material, and at the same time making the liquid material and the gas material at the bottom of the fixed tank 1 fully contact and mix.

[0039] The working process and principle of the utility model are as follows:

[0040] First, liquid material is transported into the fixed tank 1 through the liquid inlet pipe 101. The liquid material first impacts on the dispersion plate 203, and the liquid material is dispersed through the dispersion plate 203. At the same time, CO gas is transported into the fixed tank 1 through the gas inlet pipe 103. At this time, the dispersed liquid impacts with the CO gas, comes into contact and mixes, effectively increasing the contact area between the liquid material and the CO gas, and effectively improving the mixing efficiency of the gas material and the liquid material;

[0041] Further, the solution is pumped into the horizontal pipe 205 through the water extraction pipe 204 and then sprayed out through the water outlet holes 207 at the bottom of the horizontal pipe 205, so as to extract and spray the solution at the bottom of the fixed tank 1, further mixing the gas material and the liquid material, and at the same time enabling the liquid material and the gas material at the bottom of the fixed tank 1 to fully contact and mix;

[0042] Further, the bubbles generated during the mixing of the materials are cleaned by the first defoaming plate 211 and the second defoaming plate 212, so as to avoid affecting the mixing of the materials.

[0043] By means of the provided mixing assembly 2 of the present utility model, while effectively improving the mixing efficiency of the gas material and the liquid material, the liquid material at the bottom is fully contacted and mixed with the gas material.

[0044] The above content is only an example and explanation of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar ways to replace them. As long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art of this technology can well understand and utilize the present invention. The present invention is only limited by the claim book and its full scope and equivalents.

Claims

1. A pre-mixing device for dimethyl ether and CO for methyl acetate processing, comprising a fixed tank (1), characterized in that: A liquid inlet pipe (101) is fixedly mounted on the top of the fixed tank (1), a liquid outlet pipe (102) is fixedly mounted on the bottom of the fixed tank (1), a plurality of air inlet pipes (103) are fixedly mounted on the fixed tank (1), the air inlet pipes (103) extend into the interior of the fixed tank (1), a plurality of nozzles (104) are fixedly mounted on the air inlet pipes (103), and a mixing assembly (2) is fixedly mounted inside the fixed tank (1); The mixing assembly (2) comprises a fixed plate (201), a shell (202) and a dispersion plate (203); the dispersion plate (203) is fixedly mounted on the top of the fixed plate (201); the fixed plate (201) is fixedly connected to the air intake pipe (103); the shell (202) is fixedly mounted on one side of the fixed tank (1); a water extraction pipe (204) is fixedly mounted on one side of the shell (202); one end of the water extraction pipe (204) extends into the interior of the fixed tank (1); A transverse pipe (205) is fixedly installed on the top of the fixed tank (1), a connecting pipe (206) is fixedly installed on the top of the shell (202), the connecting pipe (206) is fixedly connected to the transverse pipe (205), and a plurality of water outlet holes (207) are opened at the bottom of the transverse pipe (205); A motor (3) is fixedly mounted on a side of the fixed tank (1) away from the housing (202), and a stirring shaft (301) is movably mounted inside the fixed tank (1), with one end of the stirring shaft (301) fixedly connected to an output end of the motor (3).

2. A pre-mixing device for dimethyl ether and CO for methyl acetate processing according to claim 1, characterized in that: A plurality of stirring rods (302) are fixedly mounted on the stirring shaft (301), wherein three stirring rods (302) are provided and the stirring rods (302) are evenly distributed on the circumference of the stirring shaft (301).

3. A pre-mixing device for dimethyl ether and CO for methyl acetate processing according to claim 2, characterized in that: A plurality of guide plates (208) are fixedly mounted on the dispersion plate (203), the guide plates (208) are evenly spaced apart, and the guide plates (208) are enclosed to form guide grooves (209).

4. A pre-mixing device for dimethyl ether and CO for methyl acetate processing according to claim 3, characterized in that: Three air intake pipes (103) are provided, and the plurality of air intake pipes (103) are evenly spaced and distributed on the circumference of the fixing plate (201).

5. A pre-mixing device for dimethyl ether and CO for methyl acetate processing according to claim 4, characterized in that: A cavity (210) is provided inside the fixed plate (201), and a defoaming plate 1 (211) and a defoaming plate 2 (212) are fixedly installed inside the cavity (210), and the defoaming plate 2 (212) is located above the defoaming plate 1 (211).

6. A pre-mixing device for dimethyl ether and CO for methyl acetate processing according to claim 5, characterized in that: The defoaming plate 1 (211) and the defoaming plate 2 (212) are both grid plates, and the aperture of the defoaming plate 1 (211) is larger than the aperture of the defoaming plate 2 (212).

Images