Carbon dioxide purifying and cooling process

Abstract

The invention discloses a carbon dioxide purifying and cooling process, and relates to the technical field of carbon dioxide purifying and processing. A working table, a mounting frame, a multi-stage separation and self-scraping combined mechanism, a fan blade disc, a distributed air inlet part and a clamping type collecting part are matched to complete purification and cooling of carbon dioxide, and the upper end face of the working table is fixedly connected with the mounting frame; the lower portion of the centrifugal cylinder located on the lower portion is provided with a distributed gas inlet part used for evenly dispersing carbon dioxide gas so that the carbon dioxide gas can be evenly led into the centrifugal cylinder, and the lower portion of each centrifugal cylinder is connected with a clamping type collecting part in a clamped mode. Impurities with different sizes and densities are removed from carbon dioxide gas step by step through a plurality of centrifugal cylinders which are communicated in sequence and have different radiuses, high-concentration and complex gas mixtures are better treated, and meanwhile solid particles and liquid drops on the inner wall can be removed in real time in the separation process; the sediment is prevented from being thickened and is prevented from being carried again by airflow, continuous operation of carbon dioxide gas treatment is guaranteed, and the purification treatment speed is increased.

Description

Technical Field

[0001] The invention relates to the technical field of carbon dioxide purification and processing, in particular to a carbon dioxide purification and cooling process. Background Art

[0002] Carbon dioxide purification and cooling technology refers to a series of methods for extracting and purifying carbon dioxide from mixed gases. It is widely used in the food and beverage industry, medical field and agricultural field. The current carbon dioxide purification and cooling technology mainly includes compression, purification, cooling liquefaction, purification and storage and transportation. Purification is one of the most important steps in the carbon dioxide purification and cooling process. The carbon dioxide airflow forms a strong vortex motion inside the cyclone separation equipment. The particles in the rotating airflow are pushed to the inner wall of the equipment due to the action of centrifugal force. Larger particles and free water droplets have greater mass and are therefore subject to greater centrifugal force. The particles and water droplets adhered to the inner wall move downward along the wall and are finally discharged through the dust exhaust holes or drain outlets at the bottom of the cyclone separation equipment, while the carbon dioxide gas purified by the cyclone separation equipment continues to move upward and is discharged from the top.

[0003] Traditional cyclone separators are usually single-stage structures, which are better at separating larger particles, but average at separating tiny particles. This is because the centrifugal force is not sufficient to effectively separate these small particles from the airflow, and because the airflow only undergoes one rotational centrifugal process, some particles may not be effectively separated, especially when dealing with high-concentration or complex mixed gases (containing particles and droplets of different sizes and densities). Since the characteristics of these impurities vary greatly, the single-stage structure cannot effectively separate all types of impurities, resulting in poor separation effects.

[0004] In addition, during the purification and separation of carbon dioxide gas, solid particles and droplets are thrown to the wall of the device by centrifugal force and deposited. After long-term operation, a large number of solid particles and droplets will accumulate on the wall of the device. If they are not scraped off in time, these deposits will gradually thicken, resulting in a decrease in the separation effect. They may be carried back into the separated gas by the airflow, causing secondary pollution and affecting the purity of the final product. The existing scraping requires regular shutdown for manual or automatic scraping, resulting in interruption of the purification process, affecting continuous operation and reducing the purification process speed. Summary of the invention

[0005] The present invention provides a carbon dioxide purification cooling process, which solves the problem that although the traditional single-stage cyclone separator can effectively separate larger particles, the separation effect on tiny particles is limited, especially when processing complex gases containing impurities of different sizes and densities, the separation effect is even worse. In addition, if the solid particles and droplets deposited on the wall are not scraped off in time, they may be carried back by the airflow to cause secondary pollution, and the existing scraping method requires shutdown operation, which affects the technical problem of continuous operation and purification efficiency.

[0006] The carbon dioxide purification and cooling process provided by the present invention has the following specific steps:

[0007] S1. Compression treatment: compress the carbon dioxide gas to a higher pressure to increase the concentration and liquefaction efficiency of carbon dioxide.

[0008] S2. Preliminary purification: Remove free water and larger particle impurities in the carbon dioxide gas through a multi-stage separation and self-scraping combined mechanism.

[0009] S3. Adsorption separation: The carbon dioxide gas that has been initially purified is selectively adsorbed by activated carbon through pressure swing adsorption technology to separate carbon dioxide and impurity gases.

[0010] S4, cooling and liquefaction: further compressing and cooling the carbon dioxide gas after adsorption and separation into liquid state.

[0011] S5. Purification treatment: The cooled and liquefied liquid carbon dioxide is passed through a distillation tower to remove residual impurities to obtain high-purity liquid carbon dioxide.

[0012] S6. Storage and transportation: Store the purified liquid carbon dioxide in suitable chemical containers for transportation and use.

[0013] The carbon dioxide purification and cooling process steps in the above steps S1-S6 need to be completed by the workbench, the mounting frame, the multi-stage separation and self-scraping combined mechanism, the fan disk, the distributed air intake part and the snap-on collection part.

[0014] The upper end surface of the workbench is fixedly connected with a mounting frame, and the mounting frame and the workbench are jointly provided with a multi-stage separation self-scraping material combination mechanism for multi-stage separation of particulate matter in carbon dioxide and automatic scraping of the particulate matter after multi-stage separation in sequence for collection. The multi-stage separation self-scraping material combination mechanism includes a plurality of centrifugal cylinders rotatably connected to the mounting frame, the radius of which increases equidistantly from bottom to top and is connected up and down, a sleeve that penetrates and slides in the centrifugal cylinder, a sliding shaft that slides in the sleeve, and a plurality of circumferentially equidistantly arranged on the inner wall of the centrifugal cylinder for scraping the separated particulate matter and free water An intercepting retention component, a plurality of self-scraping components equidistantly arranged on the sliding shaft and the sliding cylinder and corresponding to the centrifugal cylinder for scraping off the particles that are thrown onto the inner wall of the centrifugal cylinder and the retention component, and a longitudinal drive component jointly arranged between the sliding shaft and the workbench for driving the sliding shaft to move longitudinally; the inner cavity wall of the centrifugal cylinder located at the lower part is fixedly connected with a fan blade disk slidably mounted on the outside of the sleeve; the lower part of the centrifugal cylinder located at the lower part is provided with a distributed air inlet part for evenly dispersing the carbon dioxide gas so that it can be evenly passed into the centrifugal cylinder; and each centrifugal cylinder lower part is clamped with a clamping collection part.

[0015] In a possible implementation, the retention assembly includes strip screens and water absorption strips, and the inner wall of the centrifuge cylinder center is equidistantly fixedly connected with a plurality of pairs of strip screens, and the inner wall of the centrifuge cylinder circumference is equidistantly fixedly connected with a plurality of water absorption strips located between each pair of strip screens.

[0016] In a possible implementation, two self-scraping components are provided in each of the centrifugal cylinders, and the self-scraping components include a plurality of sliding rings fixedly connected to the circumferential outer wall of the sleeve by connecting rods at equal intervals, the sliding rings are slidably connected with a sliding rod, the end of the sliding rod away from the sleeve is fixedly connected with an arc-shaped scraper, the arc-shaped scraper is symmetrically provided with strip through grooves corresponding to the strip blocking nets, the outer wall of the sliding shaft is circumferentially equidistantly provided with a plurality of slot holes corresponding to the sliding rods, a connecting rod is hinged in the slot hole, a plurality of strip grooves corresponding to the slot holes are circumferentially equidistantly provided on the outer side of the sleeve, and the end of the connecting rod away from the sliding shaft passes through the strip groove and is hinged to the end of the sliding rod.

[0017] In one possible implementation, the longitudinal drive assembly includes an annular cylinder fixedly connected to the upper end surface of the workbench, a guide groove is provided on the inner wall of the annular cylinder, and the guide groove is composed of an upper arched groove section and a lower arched groove section connected to both ends of the upper arched groove section, and a guided column slidably connected in the guide groove is fixedly connected to the outside of the sliding shaft.

[0018] In a possible implementation, the distributed air intake portion includes an annular disk that is rotatably connected to the lower part of the centrifugal cylinder, and the lower part of the annular disk is connected to a plurality of air intake pipes equidistantly in the circumferential direction. The lower ends of the air intake pipes are commonly connected to an annular connecting pipe, and the outside of the annular connecting pipe is connected to an inlet pipe.

[0019] In a possible implementation, the snap-on collecting portion includes a plurality of arc grooves equidistantly arranged on the lower end surface of the centrifugal cylinder and an arc box inserted in the arc groove and open at the top, the arc groove being provided with a connecting groove connected to the centrifugal cylinder, a No. 1 magnetic block is fixedly connected to the upper groove wall of the arc groove, a No. 2 magnetic block cooperating with the No. 1 magnetic block is fixedly connected to the upper end surface of the arc box, and the opposing surfaces of the No. 1 magnetic block and the No. 2 magnetic block are of opposite poles, a plurality of slide grooves corresponding to the arc box are equidistantly arranged on the lower part of the centrifugal cylinder, a latch tongue is slidably connected in the slide groove, a reset spring is fixedly connected between the latch tongue and the slide groove, a slot cooperating with the latch tongue is provided on the side of the arc box close to the latch tongue, and a counterweight is fixedly connected to the lower end surface of the latch tongue.

[0020] In a possible implementation, a limiting groove is provided on the bottom wall plate of the centrifugal cylinder at the lower portion, and a guide bar slidably disposed in the limiting groove is fixedly connected to the outside of the sleeve.

[0021] In a possible implementation, an L-shaped rod is fixedly connected to the upper end surface of the workbench, and an end of the transverse section of the L-shaped rod close to the sleeve is fixedly connected to a friction ring slidably mounted outside the sleeve, and the friction ring and the sleeve are interference fit.

[0022] It can be seen from the above technical solutions that the present invention has the following advantages:

[0023] In the present invention, carbon dioxide gas is separated in multiple stages by using a plurality of centrifugal cylinders which are connected in sequence and have different radii. Different centrifugal forces in each centrifugal cylinder are utilized to separate and remove impurities of different sizes and densities step by step in sequence. High-concentration and complex gas mixtures can be handled better, and the adaptability is wider. Different impurity types are efficiently separated in centrifugal cylinders of different levels, thereby improving the separation effect.

[0024] In the present invention, through the coordinated design of the self-scraping component and the centrifugal barrel, the self-scraping component can remove solid particles and liquid droplets on the inner wall of the centrifugal barrel in real time while separating the carbon dioxide gas, preventing the sediment from gradually thickening, thereby continuously maintaining a high-efficiency separation effect, and can also prevent the sediment from being carried back into the separated gas by the airflow, effectively reducing the risk of secondary pollution, and there is no need to stop the machine for scraping, so that the treatment of carbon dioxide gas can be carried out continuously, avoiding interruption of purification treatment, thereby improving the overall treatment speed and efficiency.

[0025] In the present invention, the impurities are collected by a quick-connect arc box arranged at the bottom of each centrifugal cylinder, so that the separated impurities are quickly collected in the arc box to avoid entering the air flow again, thereby effectively reducing the risk of secondary contamination. At the same time, it is also convenient to quickly remove and replace the arc box after it is full of collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 This is a process diagram for carbon dioxide purification and cooling provided by the present invention.

[0028] Figure 2 The present invention provides an overall structural diagram.

[0029] Figure 3 This is a schematic diagram of the overall cross-sectional structure provided by the present invention (the self-scraping component part is not shown).

[0030] Figure 4This is a schematic cross-sectional view of the partial structure of the multi-stage separation and self-scraping combined mechanism provided by the present invention.

[0031] Figure 5 This is a schematic diagram of the installation structure of the self-scraping component and the retaining component provided by the present invention.

[0032] Figure 6 This is a schematic cross-sectional view from a front perspective of the partial structure of the multi-stage separation self-scraping combined mechanism provided by the present invention.

[0033] Figure 7 The present invention provides Figure 6 Schematic diagram of the enlarged structure of part A in FIG.

[0034] Figure 8 The present invention provides Figure 6 Schematic diagram of the enlarged structure of part B.

[0035] Fig. 9 This is a schematic diagram of the disassembled installation structure of the clip-on collection part provided by the present invention when viewed from the bottom.

[0036] Fig.10 This is a schematic diagram of the connection structure between the centrifugal cylinder and the distributed air inlet provided by the present invention.

[0037] Fig.11 A schematic cross-sectional view of the connection structure between the centrifugal cylinder and the annular disk provided by the present invention.

[0038] The above drawings include the following reference numerals:

[0039] 1. Workbench; 2. Mounting frame; 3. Multi-stage separation and self-scraping material combined mechanism; 31. Centrifugal cylinder; 32. Sleeve; 33. Sliding shaft; 34. Retention assembly; 341. Strip blocking net; 342. Water absorption strip; 35. Self-scraping assembly; 351. Connecting rod; 352. Slip ring; 353. Sliding rod; 354. Arc scraper; 355. Strip through groove; 356. Connecting rod; 357. Strip groove; 36. Vertical drive assembly; 361. Ring cylinder; 362. Guide Guide groove; 363, guided column; 4, fan blade disk; 5, distributed air intake part; 51, annular disk; 52, air intake pipe; 53, annular connecting pipe; 54, inlet pipe; 6, snap-on collecting part; 61, arc groove; 62, arc box; 63, connecting groove; 64, magnetic block No. 1; 65, magnetic block No. 2; 66, slide groove; 67, latch tongue; 68, reset spring; 69, latch groove; 610, counterweight block; 7, limit groove; 8, guide strip; 9, friction ring. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0041] See also Figure 1 , Figure 2 and Figure 3 The present invention provides a technical solution: a carbon dioxide purification and cooling process. The specific steps of the carbon dioxide purification and cooling process are as follows:

[0042] S1. Compression treatment: compress the carbon dioxide gas to a higher pressure to increase the concentration and liquefaction efficiency of carbon dioxide.

[0043] S2. Preliminary purification: Free water and larger particle impurities in the carbon dioxide gas are removed through a multi-stage separation and self-scraping combined mechanism 3.

[0044] S3. Adsorption separation: The carbon dioxide gas that has been initially purified is selectively adsorbed by activated carbon through pressure swing adsorption technology to separate carbon dioxide and impurity gases.

[0045] S4, cooling and liquefaction: further compressing and cooling the carbon dioxide gas after adsorption and separation into liquid state.

[0046] S5. Purification treatment: The cooled and liquefied liquid carbon dioxide is passed through a distillation tower to remove residual impurities to obtain high-purity liquid carbon dioxide.

[0047] S6. Storage and transportation: Store the purified liquid carbon dioxide in suitable chemical containers for transportation and use.

[0048] The carbon dioxide purification and cooling process steps in the above steps S1-S6 need to be completed by the workbench 1, the mounting frame 2, the multi-stage separation and self-scraping combined mechanism 3, the fan disk 4, the distributed air intake part 5 and the snap-on collection part 6.

[0049] The upper end surface of the workbench 1 is fixedly connected with a mounting frame 2, and the mounting frame 2 and the workbench 1 are jointly provided with a multi-stage separation self-scraping combined mechanism 3 for multi-stage separation of particulate matter in carbon dioxide and automatic scraping of the multi-stage separated particulate matter in sequence for collection.

[0050] See also Figure 2 , Figure 3 , Figure 4 , Fig.10 and Fig.11In this embodiment, the multi-stage separation self-scraping combined mechanism 3 includes a plurality of centrifugal cylinders 31 rotatably connected to the mounting frame 2, the radius of which increases equidistantly from bottom to top and which are connected up and down. The lower part of the centrifugal cylinder 31 located at the lower part is provided with a distributed air inlet 5 for evenly dispersing the carbon dioxide gas so that it can be evenly introduced into the centrifugal cylinder 31. The distributed air inlet 5 includes an annular disk 51 rotatably connected to the lower part of the centrifugal cylinder 31. The lower part of the annular disk 51 is circumferentially equidistantly connected with a plurality of air inlet pipes 52. The lower ends of the air inlet pipes 52 are commonly connected with an annular connecting pipe 53, and the outside of the annular connecting pipe 53 is connected with an inlet pipe 54.

[0051] First, the carbon dioxide gas is introduced into the inlet pipe 54, and then into the annular connecting pipe 53, and then flows into the air inlet pipe 52 respectively, and then enters the centrifugal cylinder 31 located at the bottom, so that the carbon dioxide gas can be dispersed and introduced into the centrifugal cylinder 31 so that it can be evenly distributed in the centrifugal cylinder 31.

[0052] See also Figure 3 , Figure 6 , Figure 8 and Fig. 9 In this embodiment, each centrifugal cylinder 31 is clamped with a clamping collecting portion 6 at the lower part, and the clamping collecting portion 6 includes a plurality of arc grooves 61 equidistantly arranged on the lower end surface of the centrifugal cylinder 31 in the circumferential direction and an arc box 62 inserted in the arc groove 61 and opened at the upper part, and a connecting groove 63 connected to the centrifugal cylinder 31 is arranged in the arc groove 61, and a No. 1 magnetic block 64 is fixedly connected to the upper groove wall of the arc groove 61, and a No. 1 magnetic block 64 is fixedly connected to the upper end surface of the arc box 62. The matching No. 2 magnetic block 65, the opposite surfaces of the No. 1 magnetic block 64 and the No. 2 magnetic block 65 are of opposite poles, and a plurality of slide grooves 66 corresponding to the arc box 62 are equidistantly provided at the lower part of the centrifugal cylinder 31 in the circumferential direction, and a latch tongue 67 is slidably connected in the slide groove 66, and a return spring 68 is fixedly connected between the latch tongue 67 and the slide groove 66, and a slot 69 matching with the latch tongue 67 is provided on one side of the arc box 62 close to the latch tongue 67, and a counterweight block 610 is fixedly connected to the lower end face of the latch tongue 67.

[0053] Before controlling the multi-stage separation self-scraping combined mechanism 3 to operate and process carbon dioxide gas, the arc box 62 is inserted into the arc groove 61. After the arc box 62 is fully inserted into the arc groove 61, the second magnetic block 65 and the first magnetic block 64 are attached to each other. At this time, the second magnetic block 65 and the first magnetic block 64 are attracted to each other by magnetic force, so that the arc box 62 can be temporarily inserted into the arc groove 61. Then, when the multi-stage separation self-scraping combined mechanism 3 is in operation: the rotating centrifugal cylinder 31 drives the tongue 67 and the counterweight block 61 0 rotates simultaneously, and then the centrifugal force generated by the counterweight block 610 pushes the latch tongue 67 to move away from the center of the centrifugal cylinder 31, so that the latch tongue 67 is then inserted into the latch groove 69, so that the arc box 62 rotating with the operation of the centrifugal cylinder 31 can be engaged and limited, ensuring the stability of the arc box 62 connected to the centrifugal cylinder 31. The arc box 62 connected to the lower part of the centrifugal cylinder 31 can be used to collect the particles and droplets generated when the multi-stage separation self-scraping combined mechanism 3 treats the carbon dioxide gas.

[0054] When the multi-stage separation self-scraping combined mechanism 3 completes the treatment of the carbon dioxide gas, the centrifugal cylinder 31 will stop rotating again. After stopping rotating, the centrifugal cylinder 31 drives the latch tongue 67 and the counterweight block 610 to become stationary. At this time, the counterweight block 610 loses the centrifugal force and then the restoring spring 68 in the stretched state resets and contracts, driving the latch tongue 67 to move toward the center of the centrifugal cylinder 31, until the latch tongue 67 moves out of the slot 69 and resets to the initial position, thereby facilitating the quick removal of the arc box 62 after it is full of collection.

[0055] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 and Fig. 9In this embodiment, the multi-stage separation self-scraping combined mechanism 3 also includes a sleeve 32 that penetrates and slides in the centrifugal cylinder 31, a sliding shaft 33 that slides in the sleeve 32, a plurality of circumferentially equidistantly arranged on the inner wall of the centrifugal cylinder 31 for intercepting separated particles and free water, a plurality of pairs of equidistantly arranged on the sliding shaft 33 and the sliding cylinder and corresponding to the centrifugal cylinder 31 for scraping off particles thrown onto the inner wall of the centrifugal cylinder 31 and the intercepting components 34, and a plurality of self-scraping components 35 that are equidistantly arranged on the sliding shaft 33 and the sliding cylinder and correspond to the centrifugal cylinder 31 and are used to scrape off particles that are attached to the inner wall of the centrifugal cylinder 31 and the intercepting components 34, and a plurality of self-scraping components 35 that are equidistantly arranged on the sliding shaft 33 and the sliding cylinder and correspond to the centrifugal cylinder 31 and are used to scrape off particles that are thrown onto the inner wall of the centrifugal cylinder 31 and the intercepting components 34, and a plurality of self-scraping components 35 that are equidistantly arranged on the sliding shaft 33 and the sliding cylinder and correspond to the centrifugal cylinder 31 and correspond to the centrifugal cylinder 31. A longitudinal drive assembly 36 is provided between the working platforms 1 for driving the sliding shaft 33 to move longitudinally. The inner cavity wall of the centrifugal cylinder 31 at the lower part is fixedly connected with a fan blade disk 4 slidably mounted on the outside of the sleeve 32. A limiting groove 7 is provided on the bottom wall plate of the centrifugal cylinder 31 at the lower part. A guide strip 8 slidably arranged in the limiting groove 7 is fixedly connected to the outside of the sleeve 32. An L-shaped rod is fixedly connected to the upper end surface of the working platform 1. The end of the transverse section of the L-shaped rod close to the sleeve 32 is fixedly connected with a friction ring 9 slidably mounted on the outside of the sleeve 32. The friction ring 9 and the sleeve 32 are interference fit.

[0056] See also Figure 4 and Figure 5 The retaining assembly 34 includes a strip screen 341 and a water absorption strip 342. A plurality of pairs of strip screens 341 are fixedly connected to the inner wall of the center of the centrifugal cylinder 31 at equal distances. A plurality of water absorption strips 342 located between each pair of strip screens 341 are fixedly connected to the inner wall of the circumference of the centrifugal cylinder 31 at equal distances.

[0057] The centrifugal cylinder 31 is driven to rotate by an external driving device. When the centrifugal cylinder 31 rotates, the annular disk 51 remains stationary. The centrifugal cylinder 31 then drives the impeller disk 4 to rotate. The rotation of the impeller disk 4 drives the carbon dioxide gas introduced into the centrifugal cylinder 31 to flow, so that the carbon dioxide gas forms a strong vortex motion inside the centrifugal cylinder 31. The introduced carbon dioxide gas flows from bottom to top and flows through the centrifugal cylinders 31 arranged with gradually increasing radii in sequence. The centrifugal force generated by the vortex motion formed by the carbon dioxide gas flow causes the particles and droplets in the carbon dioxide gas to be thrown to the outside, and then thrown onto the inner wall of the centrifugal cylinder 31.

[0058] Part of the mixture thrown onto the inner wall of the centrifugal barrel 31 will gradually slide onto the strip screen 341 and the water absorption strip 342 under the circumferential movement of the centrifugal barrel 31, and the particles will be intercepted on the strip screen 341, while the droplets will be absorbed by the water absorption strip 342, further enhancing the adsorption effect on the particles and droplets after being thrown out, and preventing the particles and droplets after being thrown out from returning to the carbon dioxide gas again. The size of the centrifugal force is proportional to the radius of the centrifugal barrel 31, so that a plurality of centrifugal barrels 31 with different radii are combined to generate centrifugal forces of different sizes, thereby separating the complex mixture in the carbon dioxide gas at different levels according to their sizes. The airflow is subjected to the action of centrifugal force at each stage, and impurities of different types and sizes are gradually removed. The separation effects of each stage are superimposed on each other, which can more effectively remove tiny impurities, greatly improving the purity of the treated carbon dioxide gas.

[0059] The centrifugal cylinder 31 will also drive the sleeve 32 to rotate through the limit groove 7 and the guide strip 8, and the sleeve 32 will then drive the sliding shaft 33 to rotate, and the rotation of the sliding shaft 33 will drive the longitudinal movement component to operate, and the longitudinal movement component will then drive the self-scraping component 35 to automatically scrape downwards the mixture thrown onto the inner wall of the centrifugal cylinder 31 and the surface of the strip blocking net 341.

[0060] See also Figure 4 , Figure 5 , Figure 6 and Figure 7 In this embodiment, two self-scraping components 35 are provided in each centrifugal cylinder 31. The self-scraping components 35 include a plurality of slip rings 352 fixedly connected to the circumferential outer wall of the sleeve 32 at equal intervals through connecting rods 351. A sliding rod 353 is slidably connected in the slip ring 352. An end of the sliding rod 353 away from the sleeve 32 is fixedly connected with an arc scraper 354. The arc scraper 354 is symmetrically provided with strip grooves 357 corresponding to the strip blocking net 341. A plurality of slots corresponding to the sliding rod 353 are equidistantly provided on the outer wall of the sliding shaft 33 in the circumferential direction. A connecting rod 356 is hinged in the slot. A plurality of strip through grooves 355 corresponding to the slots are equidistantly provided on the outer circumference of the sleeve 32. One end of the connecting rod 356 away from the sliding shaft 33 passes through the strip through groove 355 and is hinged to the end of the sliding rod 353.

[0061] See also Figure 3 , Figure 4 and Fig.10 The longitudinal drive assembly 36 includes an annular cylinder 361 fixedly connected to the upper end surface of the workbench 1, and a guide groove 362 is opened on the inner wall of the annular cylinder 361. The guide groove 362 consists of an upper arched groove section and a lower arched groove section connected to both ends of the upper arched groove section. The outside of the sliding shaft 33 is fixedly connected to a guided column 363 slidably connected to the guide groove 362.

[0062] The rotation of the sliding shaft 33 simultaneously drives the guided column 363 to slide in the guide groove 362. When the guided column 363 slides to the highest point of the upper arched groove section in the guide groove and gradually begins to slide downward, the guided column 363 will be driven to gradually move downward and drive the sliding shaft 33 to move downward. The interference fit between the friction ring 9 and the sleeve 32 is used to make the sleeve 32 have a certain friction resistance when moving up and down. The sliding shaft 33 then pushes the connecting rod 356 to move downward, and the connecting rod 356 then pushes the sliding rod 353 to move in the direction away from the sliding shaft 33. The sliding rod 353 then drives the arc scraper to move synchronously until the arc scraper 354 contacts the inner wall of the centrifugal cylinder 31. At the same time, the strip through groove 357 on the arc scraper 354 is also sleeved on the outside of the strip blocking net 341.

[0063] Next, the sliding shaft 33 drives the arc scraper 354 to move downward through the connecting rod 356 and the sliding rod 353. The sliding rod 353 moving downward will also push the sleeve 32 to move downward synchronously. When the arc scraper 354 moves downward, it can scrape the mixture thrown on the inner wall of the centrifugal cylinder 31 and the strip blocking net 341 until the arc scraper 354 moves down to the lowest position. At this time, the guided column 363 moves to the lowest position of the lower arched groove section in the guide groove 362, and then continues to rotate. The sliding shaft 33 drives the guided column 363 to continue moving along the guide groove 362, and the guided column 363 begins to gradually move upward and drives the sliding shaft 33 to move synchronously. When the sliding shaft 33 gradually moves upward, it will pull the sliding rod 353 toward the sliding shaft 33 through the connecting rod 356, and the sliding rod 353 then drives the arc scraper 354 to move toward the sliding shaft 33 until the arc scraper 354 is separated from the inner wall of the centrifugal cylinder 31 and the strip through groove 357 is separated from the strip blocking net 341.

[0064] Then the sliding shaft 33 drives the arc scraper 354 to move upward as a whole through the connecting rod 356 and the sliding rod 353 until the arc scraper 354 moves to the highest position. At this time, the guided column 363 moves again to the highest position of the upper arched groove section in the guide groove 362, and then the above initial steps are repeated again, so that the arc scraper 354 is driven to continuously repeat the up and down reciprocating operation, so that the mixture that is thrown out and adheres to the inner wall of the centrifugal cylinder 31 is automatically scraped downward, and the scraped mixture moves downward and falls into the arc box 62 for collection. The scraping can be automatically completed during the separation process, and the sediment can be removed in real time, the wall of the centrifugal cylinder 31 is kept clean, and the stability of the airflow is ensured, thereby continuously maintaining efficient separation performance without frequent shutdowns, thereby achieving continuous purification operation and processing.

[0065] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0067] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A carbon dioxide purification and cooling process, characterized in that: The specific carbon dioxide purification and cooling process steps are as follows: S1. Compression treatment: compressing carbon dioxide gas to a higher pressure to increase the concentration and liquefaction efficiency of carbon dioxide; S2, preliminary purification: removing free water and larger particle impurities in the carbon dioxide gas through a multi-stage separation and self-scraping combined mechanism (3); S3, adsorption separation: The carbon dioxide gas after preliminary purification is selectively adsorbed by activated carbon through pressure swing adsorption technology to separate carbon dioxide and impurity gases; S4, cooling and liquefaction: further compressing and cooling the carbon dioxide gas after adsorption and separation into a liquid state; S5, purification treatment: the cooled and liquefied liquid carbon dioxide is passed through a distillation tower to remove residual impurities to obtain high-purity liquid carbon dioxide; S6. Storage and transportation: Store the purified liquid carbon dioxide in suitable chemical containers for transportation and use; The carbon dioxide purification and cooling process steps in the above steps S1-S6 need to be completed by the operation table (1), the mounting frame (2), the multi-stage separation and self-scraping combined mechanism (3), the fan disk (4), the distributed air intake part (5) and the snap-on collection part (6); wherein: The upper end surface of the workbench (1) is fixedly connected to a mounting frame (2), and the mounting frame (2) and the workbench (1) are jointly provided with a multi-stage separation self-scraping combined mechanism (3) for performing multi-stage separation of particulate matter in carbon dioxide and automatically scraping off the particulate matter after the multi-stage separation in sequence for easy collection; The multi-stage separation and self-scraping combined mechanism (3) comprises: A plurality of centrifugal cylinders (31) rotatably connected to a mounting frame (2) and having equidistant radii increasing from bottom to top and connected up and down, a sleeve (32) slidingly connected through the centrifugal cylinder (31), a sliding shaft (33) slidingly connected in the sleeve (32), a plurality of retaining components (34) equidistantly arranged on the inner wall of the circumference of the centrifugal cylinder (31) for intercepting separated particles and free water, a plurality of self-scraping components (35) equidistantly arranged on the sliding shaft (33) and the sliding cylinder and corresponding to the centrifugal cylinder (31) for scraping off particles thrown onto the inner wall of the centrifugal cylinder (31) and the retaining components (34), and a longitudinal drive component (36) jointly arranged between the sliding shaft (33) and the working platform (1) for driving the sliding shaft (33) to move longitudinally; The inner cavity wall of the centrifugal cylinder (31) located at the bottom is fixedly connected to a fan blade disk (4) slidably mounted on the outside of the sleeve (32); the lower part of the centrifugal cylinder (31) located at the bottom is provided with a distributed air intake portion (5) for evenly dispersing carbon dioxide gas so that it is evenly introduced into the centrifugal cylinder (31); and the lower part of each centrifugal cylinder (31) is clamped with a clamping collection portion (6).

2. The carbon dioxide purification and cooling process according to claim 1, characterized in that: The retaining assembly (34) comprises a strip-shaped screen (341) and a water absorption strip (342); a plurality of pairs of strip-shaped screens (341) are fixedly connected at equal intervals to the inner wall at the center of the centrifugal cylinder (31); and a plurality of water absorption strips (342) are fixedly connected at equal intervals to the inner wall at the circumference of the centrifugal cylinder (31) and are located between each pair of strip-shaped screens (341).

3. The carbon dioxide purification and cooling process according to claim 1, characterized in that: Two self-scraping assemblies (35) are arranged in each centrifugal cylinder (31), and the self-scraping assemblies (35) include a plurality of sliding rings (352) fixedly connected to the outer wall of the circumference of the sleeve (32) at equal distances through connecting rods (351), a sliding rod (353) is slidably connected in the sliding ring (352), and an arc-shaped scraper (354) is fixedly connected to one end of the sliding rod (353) away from the sleeve (32), and the arc-shaped scraper (354) is symmetrically provided with A strip groove (357) corresponding to the strip fence (341), the outer wall of the sliding shaft (33) is circumferentially equidistantly provided with a plurality of slot holes corresponding to the sliding rod (353), a connecting rod (356) is hinged in the slot hole, the outer circumference of the sleeve (32) is circumferentially equidistantly provided with a plurality of strip through grooves (355) corresponding to the slot holes, one end of the connecting rod (356) away from the sliding shaft (33) passes through the strip through groove (355) and is hinged to the end of the sliding rod (353).

4. The carbon dioxide purification and cooling process according to claim 1, characterized in that: The longitudinal drive assembly (36) comprises an annular cylinder (361) fixedly connected to the upper end surface of the workbench (1); a guide groove (362) is provided on the inner wall of the annular cylinder (361); the guide groove (362) comprises an upper arched groove section and a lower arched groove section connected to both ends of the upper arched groove section; and a guided column (363) slidably connected in the guide groove (362) is fixedly connected to the outside of the sliding shaft (33).

5. The carbon dioxide purification and cooling process according to claim 1, characterized in that: The distributed air intake section (5) comprises an annular disk (51) which is rotatably connected to the lower part of the centrifugal cylinder (31); the lower part of the annular disk (51) is connected to a plurality of air intake pipes (52) at equal intervals in the circumferential direction; the lower ends of the air intake pipes (52) are connected to an annular connecting pipe (53); and the outside of the annular connecting pipe (53) is connected to an inlet pipe (54).

6. The carbon dioxide purification and cooling process according to claim 1, characterized in that: The snap-on collecting portion (6) comprises a plurality of arc-shaped grooves (61) equidistantly arranged on the lower end surface of the centrifugal cylinder (31) in the circumferential direction, and an arc-shaped box (62) inserted in the arc-shaped grooves (61) and having an upper opening, wherein a connecting groove (63) communicating with the centrifugal cylinder (31) is arranged in the arc-shaped groove (61), a first magnetic block (64) is fixedly connected to the upper groove wall of the arc-shaped groove (61), and a second magnetic block (65) cooperating with the first magnetic block (64) is fixedly connected to the upper end surface of the arc-shaped box (62), and the first magnetic block (63) is connected to the lower end surface of the centrifugal cylinder (31). 4) and the opposite surfaces of the second magnetic block (65) are of different poles, a plurality of slide grooves (66) corresponding to the arc box (62) are equidistantly provided at the lower part of the centrifugal cylinder (31) in the circumferential direction, a latching tongue (67) is slidably connected in the slide groove (66), a return spring (68) is fixedly connected between the latching tongue (67) and the slide groove (66), a slot (69) cooperating with the latching tongue (67) is provided on one side of the arc box (62) close to the latching tongue (67), and a counterweight block (610) is fixedly connected to the lower end surface of the latching tongue (67).

7. The carbon dioxide purification and cooling process according to claim 1, characterized in that: A limiting groove (7) is provided on the bottom wall plate of the centrifugal cylinder (31) located at the lower part, and a guide bar (8) slidably arranged in the limiting groove (7) is fixedly connected to the outside of the sleeve (32).

8. The carbon dioxide purification and cooling process according to claim 1, characterized in that: An L-shaped rod is fixedly connected to the upper end surface of the workbench (1); an end of the transverse section of the L-shaped rod close to the sleeve (32) is fixedly connected to a friction ring (9) slidably mounted outside the sleeve (32); and an interference fit is formed between the friction ring (9) and the sleeve (32).

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