Methanol removal device for food-grade carbon dioxide production

Abstract

The utility model relates to the technical field of removal of methanol from carbon dioxide, in particular to a methanol removal device for food-grade carbon dioxide production, which comprises an adsorption box, a spraying mechanism is integrated at the top of the inner wall of the adsorption box, an air inlet mechanism is arranged at the bottom of the inner wall of the adsorption box, and an air outlet pipe is communicated with the center of the top of the adsorption box. The bottom of one side of the adsorption box is communicated with a liquid outlet pipe; the spraying mechanism comprises an annular pipe, and atomizing nozzles are fixedly connected to the inner side of the annular pipe at equal intervals. The utility model aims to provide a methanol removal device for food-grade carbon dioxide production to solve the problems that an air inlet structure of an existing food-grade carbon dioxide washing and spraying device is simple, air inlet staying cannot be carried out, a large-stroke spraying cavity or a plurality of spraying mechanisms are needed to guarantee the methanol washing and removing effect, and the production cost is low. The size of washing equipment is too large, and miniaturization development, application and popularization of carbon dioxide recovery equipment are not facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide to methanol, in particular to a methanol removal device for food-grade carbon dioxide production. Background Technique

[0002] Carbon dioxide is a valuable resource and can be widely applied in various fields: chemical synthesis industry, mechanical protection welding, metal casting processing, agricultural fertilization, fruit and vegetable preservation, beer and beverage filling, oil extraction, fire extinguishing, medicine and health, food addition and other industries all require a large amount of carbon dioxide; while the sources of carbon dioxide in our country are very rich, but due to the unfavorable measures for recycling carbon dioxide, the recycled carbon dioxide every year is less than 1% of the emissions. Worldwide, about 20 billion tons of carbon dioxide are emitted into the atmosphere every year, which not only causes air pollution and forms a terrible greenhouse effect, but also wastes precious resources.

[0003] At present, most of the carbon dioxide to methanol is carried out by the way of spray washing with water. Utilizing the fact that methanol is easily soluble in water, it is separated from carbon dioxide, and the separated carbon dioxide is dried to obtain food-grade carbon dioxide. However, the air inlet structure of the current food-grade carbon dioxide water spray washing device is simple and cannot carry out air inlet stay. A large-stroke spray cavity or multiple spray mechanisms are required to ensure the methanol water washing removal effect, which easily leads to the over-large volume of the water washing equipment and is not conducive to the miniaturization development, application and popularization of carbon dioxide recovery equipment. Content of the Utility Model

[0004] The purpose of the utility model is to provide a methanol removal device for food-grade carbon dioxide production, so as to solve the problems that the air inlet structure of the current food-grade carbon dioxide water spray washing device is simple, cannot carry out air inlet stay, a large-stroke spray cavity or multiple spray mechanisms are required to ensure the methanol water washing removal effect, which easily leads to the over-large volume of the water washing equipment and is not conducive to the miniaturization development, application and popularization of carbon dioxide recovery equipment.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A methanol removal device for food-grade carbon dioxide production, including an adsorption box, wherein a spray mechanism is integrally arranged at the top of the inner wall of the adsorption box, an air inlet mechanism is arranged at the bottom of the inner wall of the adsorption box, an air outlet pipe is communicated with the center of the top of the adsorption box, and a liquid outlet pipe is communicated with one side of the bottom of the adsorption box;

[0007] The spray mechanism includes an annular pipe, and atomizing nozzles are fixedly connected at equal intervals on the inner side of the annular pipe;

[0008] The intake mechanism includes an intake pipe, a diverter is connected to the top of the intake pipe, a connecting rod is fixedly connected to the center of the top of the diverter, a fan blade is fixedly connected to the top of the connecting rod, and a driving device is fixedly connected to the lower part of the intake pipe.

[0009] Preferably, a liquid inlet pipe is connected to one side of the annular pipe close to the liquid outlet pipe. The liquid inlet pipe and the annular pipe are both integrally fixed on the adsorption box, and the liquid inlet pipe extends to the outside of the adsorption box.

[0010] Preferably, the atomizing nozzle is arranged at an angle of 45° obliquely downward.

[0011] Preferably, the diverter is designed as a hollow tooth roller, and air holes are evenly arranged on the surface of the teeth.

[0012] Preferably, the driving device includes a driven wheel. The surface of the driven wheel is connected to a driving wheel through a belt. The center of the driving wheel is fixedly connected to the output shaft of a driving motor, and the driving motor is fixedly connected to the adsorption box.

[0013] Preferably, a sealing pipe is integrally formed at the bottom of the adsorption box and on the outside of the intake pipe. Sealing packing is filled inside the sealing pipe and on the outside of the intake pipe. A limiting ring is sleeved on the surface of the intake pipe and below the sealing packing. A sealing end cover is arranged at the bottom of the limiting ring, and the sealing end cover is fixedly connected to the bottom of the sealing pipe.

[0014] Preferably, supports are evenly and fixedly connected to the bottom edge of the adsorption box.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] In the present utility model, by adding a diverter to the top of the intake pipe to carry out intake air resistance and diversion, intake air stay and uniform internal air outlet are achieved. Then, in cooperation with the spraying mechanism, the intake air water washing and spraying effect can be improved. Moreover, a driving device is added to the bottom of the intake pipe, which can realize the synchronous rotation of the intake pipe, the diverter and the fan blade, thereby realizing the agitation of the intake air and the washing liquid to accelerate the mixing effect of the intake air and the washing liquid, ensuring the methanol adsorption speed in carbon dioxide, and then achieving a good methanol removal effect within a short stroke or with a single spraying mechanism, so as to compress the volume of the food-grade carbon dioxide water washing and spraying device, facilitate the construction of a small-volume carbon dioxide recovery system, and be conducive to the popularization and production of food-grade carbon dioxide recovery applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the upper shaft view of a methanol removal device for producing food-grade carbon dioxide according to the present utility model;

[0018] Figure 2This is a lower axial view of a methanol removal device for food-grade carbon dioxide production according to the utility model;

[0019] Figure 3 This is a cross-sectional view of an adsorption box of a methanol removal device for food-grade carbon dioxide production according to the utility model.

[0020] In the figure: 1. adsorption box; 2. spray mechanism; 21. annular tube; 22. atomizing nozzle; 3. air intake mechanism; 31. air intake pipe; 32. diverter; 33. connecting rod; 34. fan blade; 35. driving device; 351. driven wheel; 352. belt; 353. driving wheel; 354. driving motor; 4. air outlet pipe; 5. liquid outlet pipe; 6. liquid inlet pipe; 7. sealing pipe; 8. sealing packing; 9. limiting ring; 10. sealing end cover; 11. support. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] See also Figures 1-3 , the utility model provides a technical solution:

[0023] A methanol removal device for food-grade carbon dioxide production comprises an adsorption box 1 for forming a water-washing spray chamber; a spray mechanism 2 is integrated at the top of the inner wall of the auxiliary box 1 for air intake spraying to adsorb methanol in carbon dioxide to achieve food-grade carbon dioxide production and impurity removal; an air intake mechanism 3 is arranged at the bottom of the inner wall of the adsorption box 1 for introducing carbon dioxide into the adsorption box; an air outlet pipe 4 is connected to the center of the top of the adsorption box 1 for exporting food-grade carbon dioxide; a liquid outlet pipe 5 is connected to the bottom of one side of the adsorption box 1 for centralized discharge of adsorbed liquid into a methanol purification process;

[0024] The spray mechanism 2 includes an annular tube 21, and an atomizing nozzle 22 is fixedly connected to the inner side of the annular tube 21 at equal distances, meeting the design of the water washing spray structure in the carbon dioxide adsorption box;

[0025] The air intake mechanism 3 includes an air intake pipe 31, the top of the air intake pipe 31 is connected to a diverter 32, the top center of the diverter 32 is fixedly connected to a connecting rod 33, the top of the connecting rod 33 is fixedly connected to a fan blade 34, and the lower part of the air intake pipe 31 is fixedly connected to a driving device 35, which meets the requirements of uniform air outlet and rotatable structure design in the air intake pipe adsorption box.

[0026] In this embodiment, please refer to Figure 3The side of the annular tube 21 close to the liquid outlet pipe 5 is connected to the liquid inlet pipe 6. The liquid inlet pipe 6 and the annular tube 21 are integrated and fixed on the adsorption box 1, and the liquid inlet pipe 6 extends to the outside of the adsorption box 1 for externally connecting water washing liquid to ensure water circulation of the spray structure.

[0027] In this embodiment, please refer to Figure 3 The atomizing nozzle 22 is set at an angle of 45° downward to ensure uniform coverage of each position in the adsorption box and ensure the spraying effect.

[0028] In this embodiment, please refer to Figure 3 The diverter 32 is designed as a hollow tooth roller, and air holes are evenly opened on the surface of the teeth to ensure uniform air outlet and air intake choke of the intake pipe.

[0029] In this embodiment, please refer to Figure 2 The driving device 35 includes a driven wheel 351, the surface of which is connected to a driving wheel 353 via a belt 352, the center of which is fixedly connected to the output shaft of a driving motor 354, and the driving motor 354 is fixedly connected to the adsorption box 1, satisfying the design of the intake pipe rotation drive structure.

[0030] In this embodiment, please refer to Figure 3 A sealing tube 7 is integrated at the bottom of the adsorption box 1 and at the outside of the air inlet pipe 31. A sealing filler 8 is filled inside the sealing tube 7 and located on the outside of the air inlet pipe 31. A limiting ring 9 is sleeved on the surface of the air inlet pipe 31 and located at the lower part of the sealing filler 8. A sealing end cover 10 is provided at the bottom of the limiting ring 9. The sealing end cover 10 is fixedly connected to the bottom of the sealing tube 7 and is used for sealing between the air inlet pipe and the adsorption box.

[0031] In this embodiment, please refer to Figure 2 The bottom edge of the adsorption box 1 is evenly and fixedly connected with supports 11 for installing and fixing the adsorption box.

[0032] The working principle of the utility model is as follows: during installation, an external carbon dioxide pipeline is connected to the bottom of the air inlet pipe 31 through a rotary joint; a water washing liquid introduction pipeline is connected to the liquid inlet pipe 6; a recovery liquid recovery pipeline is connected to the liquid outlet pipe 5; a food-grade carbon dioxide recovery pipeline is connected to the air outlet pipe 4; and a drive motor 354 is connected to an external control system.

[0033] In use, first, the atomizing nozzle 22 in the spraying mechanism 2 is used to evenly spray the washing liquid in the adsorption box 1. After the washing liquid submerges the fan blade 34, carbon dioxide is introduced into the flow divider 32 through the air inlet pipe 31. During the process of introducing carbon dioxide, the driving motor 354 is started to drive the driving wheel 353 to rotate. The driving wheel 353 drives the driven wheel 351 to rotate through the belt 352. The driven wheel 351 drives the air inlet pipe 31 to rotate, and the air inlet pipe 31 drives the flow divider 32 to rotate. Thus, carbon dioxide is evenly and rotatably diffused from the flow divider into the washing liquid. Moreover, the flow divider 32 also drives the fan blade 34 to rotate in cooperation with the connecting rod 33, further agitating the washing liquid, so that the carbon dioxide evenly introduced into the washing liquid is further mixed with the washing liquid to perform a primary washing and methanol adsorption on the methanol in the carbon dioxide. Then, as the carbon dioxide rises into the spraying area above the fan blade 34, the atomized spraying liquid of the washing liquid is used for secondary spraying and methanol adsorption. Therefore, the methanol in the food-grade carbon dioxide can be fully adsorbed by the short-stroke single spraying mechanism.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A methanol removal device for food-grade carbon dioxide production, characterized in that: It comprises an adsorption box (1), the top of the inner wall of the adsorption box (1) is integrated with a spray mechanism (2), the bottom of the inner wall of the adsorption box (1) is provided with an air intake mechanism (3), the top center of the adsorption box (1) is connected to an air outlet pipe (4), and the bottom of one side of the adsorption box (1) is connected to a liquid outlet pipe (5); The spray mechanism (2) comprises an annular tube (21), and atomizing nozzles (22) are fixedly connected to the inner side of the annular tube (21) at equal intervals; The air intake mechanism (3) comprises an air intake pipe (31), the top of the air intake pipe (31) is connected to a diverter (32), the top center of the diverter (32) is fixedly connected to a connecting rod (33), the top of the connecting rod (33) is fixedly connected to a fan blade (34), and the lower part of the air intake pipe (31) is fixedly connected to a driving device (35).

2. The methanol removal device for food-grade carbon dioxide production according to claim 1, wherein: A side of the annular tube (21) close to the liquid outlet tube (5) is connected to a liquid inlet tube (6); the liquid inlet tube (6) and the annular tube (21) are both integrated and fixed on the adsorption box (1), and the liquid inlet tube (6) extends to the outside of the adsorption box (1).

3. The methanol removal device for food-grade carbon dioxide production according to claim 1, characterized in that: The atomizing nozzle (22) is arranged obliquely downward at 45 degrees.

4. A methanol removal device for food-grade carbon dioxide production according to claim 1, characterized in that: The flow divider (32) is designed as a hollow tooth roller, and air holes are evenly opened on the surface of the teeth.

5. The methanol removal device for food-grade carbon dioxide production according to claim 1, characterized in that: The driving device (35) comprises a driven wheel (351), the surface of which is connected to a driving wheel (353) via a belt (352), the center of which is fixedly connected to an output shaft of a driving motor (354), and the driving motor (354) is fixedly connected to the adsorption box (1).

6. The methanol removal device for food-grade carbon dioxide production according to claim 1, characterized in that: A sealing tube (7) is integrated at the bottom of the adsorption box (1) and at the outer side of the air inlet pipe (31); a sealing filler (8) is filled inside the sealing tube (7) and located at the outer side of the air inlet pipe (31); a limiting ring (9) is sleeved on the surface of the air inlet pipe (31) and located below the sealing filler (8); a sealing end cover (10) is provided at the bottom of the limiting ring (9); and the sealing end cover (10) is fixedly connected to the bottom of the sealing tube (7).

7. A methanol removal device for food-grade carbon dioxide production according to claim 1, characterized in that: The bottom edges of the adsorption box (1) are fixedly connected with supports (11) at equal distances.

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