Manufacturing apparatus and method of a spherical carbon dioxide absorbent with protrusions

Abstract

The application discloses a manufacturing equipment and method of a spherical carbon dioxide absorbent with protruding spurs, belongs to the technical field of medical carbon dioxide absorbent preparation, and comprises the following steps: mixing powder, wherein the powder comprises calcium hydroxide, a humectant and a reinforcing agent; feeding the mixed powder into a disc-type spherical granulator; under the condition that the disc-type spherical granulator continuously rotates, alternately spraying liquid and adding powder into the mother ball, so that a water film is formed on the surface of the mother ball, the newly added powder is gradually absorbed layer by layer to make the mother ball grow, and adjacent particles are mutually adsorbed to form protruding spurs; and the application can reduce the risk of side reactions between strong alkaline components and anesthetics, and improve the use safety of the carbon dioxide absorbent in an anesthetic application scenario. Mechanical extrusion caused by rolling collision can discharge part of the internal voids of the particles, improve the particle density and the anti-wear ability, and thus reduce the generation of fine powder.

Description

Technical Field

[0001] This invention relates to the field of medical carbon dioxide absorbent preparation technology, and particularly to the manufacturing equipment and method for spherical carbon dioxide absorbents with protruding spikes. Background Technology

[0002] Carbon dioxide absorbents are important materials used to absorb carbon dioxide in closed-circuit anesthesia, low-flow inhalation anesthesia, respiratory care, hyperbaric chambers, and diving equipment. Among existing medical carbon dioxide absorbents, calcium lime is widely used due to its good carbon dioxide absorption capacity and ease of use.

[0003] The hardness and dust generation of calcium lime granules directly affect their safety in use. When the internal binding force of calcium lime granules is poor, fine powder is easily generated due to collision and friction during transportation, filling, or use. This fine powder may enter the patient's respiratory tract with the airflow, increasing the risk of respiratory irritation. If the fine powder is reduced by simply increasing the hardness of the granules, carbon dioxide gas will have difficulty entering the interior of the granules, which may reduce the internal reaction area and carbon dioxide absorption efficiency.

[0004] In addition, some calcium lime products contain strong alkaline components such as sodium hydroxide and potassium hydroxide to increase the carbon dioxide absorption reaction rate. However, these strong alkaline components may react with anesthetics in the anesthetic application environment, thus affecting the safety of clinical use.

[0005] Therefore, it is necessary to provide a carbon dioxide absorbent that can balance particle strength, low dust generation, and carbon dioxide absorption capacity without the addition of sodium hydroxide and potassium hydroxide, as well as its manufacturing method and equipment. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a manufacturing equipment and method for spherical carbon dioxide absorbent with protruding spikes, thereby solving the problems in the background art.

[0007] To achieve the aforementioned objective, the first aspect of this invention provides an apparatus and method for manufacturing a spherical carbon dioxide absorbent with protruding spikes, comprising the following steps: S1, mixing the powder, the powder comprising calcium hydroxide, humectant and reinforcing agent, and without adding sodium hydroxide and potassium hydroxide to the powder; S2, the mixed powder is fed into a disc-type spherical granulator, so that the powder rolls in the disc-type spherical granulator to form mother balls with a particle size of less than 1 mm; S3, under the condition that the disc-type spherical granulator is continuously rotating, liquid and powder are alternately sprayed into the mother ball, so that a water film is formed on the surface of the mother ball and the newly added powder is adsorbed layer by layer and grows. At the same time, adjacent particles are adsorbed to each other to form protrusions, and the protrusions are rubbed against the inner wall of the disc-type spherical granulator to form a protrusion structure distributed on the surface of the spherical particles. S4, the spherical particles are screened to obtain spherical particles with a particle size of 2 mm to 5 mm; S5, spray pH indicator dye solution onto the surface of the screened spherical particles; S6, the sprayed spherical particles are dried to obtain a spherical carbon dioxide absorbent with protruding spikes.

[0008] Optionally, the spiky spherical carbon dioxide absorbent comprises, by weight percentage, the following components based on the total mass of the raw materials: 75% to 90% calcium hydroxide, 0.1% to 1% humectant, 0.1% to 5% enhancer, 0.005% to 1% pH indicator dye, and 9% to 13% water, the sum of the weight percentages of each component being 100%.

[0009] Optionally, the humectant is calcium chloride, the enhancer is zeolite powder, and the pH indicator staining agent is ethyl violet.

[0010] Optionally, the calcium hydroxide has a fineness of 800 mesh and a content of more than 95%.

[0011] Optionally, in step S1, the mixing time of the powder is 30 minutes; in step S3, the rotation speed of the disc-type spherical granulator is 28 revolutions per minute.

[0012] Optionally, in step S3, for every 2 kg of powder added, 880 ml of water is sprayed in, and the powder addition and spraying are repeated until the particle size of the spherical particles reaches 4 mm.

[0013] Optionally, in step S6, the drying is carried out in a tunnel oven at a temperature of 130°C for 5 minutes, and the resulting spiky spherical carbon dioxide absorbent has a moisture content of 5% to 15%.

[0014] Optionally, in step S4, a vibrating screen is used to screen the spherical particles according to their diameter. The vibrating screen includes a screen with a 2mm aperture and a screen with a 5mm aperture. The unqualified particles screened out are dried, ground into powder, and reused as the powder.

[0015] A second aspect of the present invention provides a spherical carbon dioxide absorbent with protrusions, comprising a spherical matrix and protrusions distributed on the outer surface of the spherical matrix, wherein the protrusions are integrally formed with the spherical matrix; The spherical matrix comprises calcium hydroxide, a humectant, a reinforcing agent, and water. A pH-indicating dye layer is disposed on the outer surface of the spherical matrix. The particle size of the spherical matrix is ​​2 mm to 5 mm. The spiked spherical carbon dioxide absorbent does not contain added sodium hydroxide or potassium hydroxide.

[0016] A third aspect of the present invention provides a manufacturing apparatus for a spherical carbon dioxide absorbent with protruding spikes for carrying out the manufacturing method, comprising a mixer, a disc-type spherical granulator, a drying oven, and a screening machine arranged sequentially along the material flow direction; The mixer is used to mix powders including calcium hydroxide, humectants, and reinforcing agents; The disc-type spherical granulator includes a granulation disc, a powder feeding unit, a liquid spraying unit, and a drive unit. The drive unit is used to drive the granulation disc to rotate. The powder feeding unit is used to add powder into the granulation disc. The liquid spraying unit is used to spray liquid into the granulation disc. The powder feeding unit and the liquid spraying unit are configured to work alternately so that the mother ball grows layer by layer and forms spiky protrusions on the surface of the spherical particles. The drying oven is used to dry the granulated spherical particles; The screening machine is used to screen dried spherical particles according to their diameter.

[0017] The beneficial effects of this invention are: 1. The manufacturing equipment and method for the spiked spherical carbon dioxide absorbent of the present invention, wherein the powder of the present invention does not contain sodium hydroxide and potassium hydroxide, can reduce the risk of adverse reactions between the strongly alkaline components and anesthetics, and improve the safety of carbon dioxide absorbent in anesthetic applications. A disc-type spherical granulator allows the mother sphere to alternately receive sprayed liquid and powder while continuously rolling. The water film on the surface of the mother sphere can adsorb the newly added powder, causing the particles to grow layer by layer. The mechanical extrusion action generated by the rolling collision can expel some of the voids inside the particles, improving particle density and wear resistance, thereby reducing the generation of fine powder.

[0018] 2. This invention utilizes the mutual adsorption between adjacent particles to form spiky protrusions. These protrusions then rub against the inner wall of the disc-type spherical granulator, creating a protrusion structure distributed on the surface of the spherical particles, resulting in a non-perfectly smooth surface. This protrusion structure increases the contact area of ​​the particle's outer surface, improving the contact conditions between carbon dioxide gas and the particle surface.

[0019] 3. When zeolite powder is used as a reinforcing agent in this invention, the zeolite powder is dispersed in the spherical matrix, which is conducive to the formation of a porous structure, and improves the diffusion and contact conditions of carbon dioxide gas inside the particles while maintaining the particle strength.

[0020] 4. By screening spherical particles into a particle size range of 2mm to 5mm, this invention ensures that the particles are not easily entrained by airflow due to their small size, nor are they easily reduced in effective contact area per unit volume of the filling layer due to their large size. This makes it well-suited for the application scenarios of medical carbon dioxide absorbents.

[0021] 5. This invention sprays a pH-indicating dye solution onto the surface of spherical particles, enabling the carbon dioxide absorbent to change color with pH changes during use, making it easier for users to determine the absorbent's usage status. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a manufacturing device for a spherical carbon dioxide absorbent with protruding spikes according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating a method for manufacturing a spherical carbon dioxide absorbent with protruding spikes according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the particle structure of a spherical carbon dioxide absorbent with protruding spikes in one embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the principle of how the mother ball grows layer by layer and forms spiky protrusions in a disc-type spherical granulator according to one embodiment of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Mixer; 2. Disc-type spherical granulator; 21. Granulation disc; 22. Powder feeding unit; 23. Liquid spraying unit; 24. Drive unit; 3. Screening machine; 31. 2mm aperture screen; 32. 5mm aperture screen; 4. Drying oven; 5. Spiked spherical carbon dioxide absorbent; 51. Spherical matrix; 52. Spiked protrusions; 53. pH indicator dye layer; 6. Mother ball.

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] Reference Figures 1-4 This embodiment provides a method and equipment for manufacturing a spherical carbon dioxide absorbent 5 with protruding spikes. The manufacturing equipment includes a mixer 1, a disc-type spherical granulator 2, a screening machine 3, and a drying oven 4 arranged sequentially along the material flow direction.

[0028] Mixer 1 is used to mix powders including calcium hydroxide, humectant, and reinforcing agent. Disc-type spherical granulator 2 is used to roll the powder to form mother spheres 6, and through alternating liquid spraying and powder addition, the mother spheres 6 grow layer by layer, while simultaneously forming spiky protrusions 52 on the surface of the spherical particles. Screening machine 3 is used to screen the granulated spherical particles according to their diameter, obtaining spherical particles with a diameter of 2 mm to 5 mm. Drying oven 4 is used to dry the spherical particles after screening and spraying with pH indicator dye solution, thereby obtaining spiky spherical carbon dioxide absorbent 5.

[0029] In this embodiment, the disc-type spherical granulator 2 includes a granulation disc 21, a powder feeding unit 22, a liquid spraying unit 23, and a drive unit 24. The drive unit 24 is connected to the granulation disc 21 and is used to drive the granulation disc 21 to rotate. The powder feeding unit 22 is located on the feed side or above the granulation disc 21 and is used to feed powder into the granulation disc 21. The liquid spraying unit 23 is located above or to the side of the granulation disc 21 and is used to spray liquid into the mother spheres 6 inside the granulation disc 21. The powder feeding unit 22 and the liquid spraying unit 23 work alternately, so that after a water film is formed on the surface of the mother spheres 6, the newly added powder is adsorbed, and then grows layer by layer under the action of rotation, tumbling, and collision of the granulation disc 21.

[0030] The screening machine 3 is preferably a vibrating screen. The vibrating screen includes a sieve 31 with a 2mm aperture and a sieve 32 with a 5mm aperture. By passing through the 2mm aperture sieve 31 and the 5mm aperture sieve 32, particles smaller than 2mm and larger than 5mm in diameter can be removed, while spherical particles with a diameter of 2mm to 5mm are retained. The unqualified particles screened out are dried, ground into powder, and reused as raw material.

[0031] The drying oven 4 is preferably a tunnel oven. A tunnel oven allows the particles to receive continuous hot air or radiant heating during transport, achieving stable drying. The drying temperature is preferably 130°C, and the drying time is preferably 5 minutes. The moisture content of the dried, spiked spherical carbon dioxide absorbent 5 is preferably controlled to be between 5% and 15%.

[0032] The spherical carbon dioxide absorbent 5 with protrusions in this embodiment includes a spherical matrix 51 and protrusions 52 distributed on the outer surface of the spherical matrix 51. The protrusions 52 are integrally formed with the spherical matrix 51. The spherical matrix 51 includes calcium hydroxide, a humectant, a reinforcing agent, and water, and a pH indicator dye layer 53 is provided on the outer surface of the spherical matrix 51. The particle size of the spherical matrix 51 is 2 mm to 5 mm. The spherical carbon dioxide absorbent 5 with protrusions does not contain added sodium hydroxide or potassium hydroxide.

[0033] Calcium hydroxide, as the main reactant, reacts with carbon dioxide. A humectant maintains appropriate moisture content within the particles, allowing the carbon dioxide absorption reaction to proceed under suitable moisture conditions. A reinforcing agent improves the particle structure strength and internal porosity. A pH-indicating dye layer 53 changes color with pH changes during absorbent use, indicating the absorbent's usage status.

[0034] The manufacturing method of this embodiment includes the following steps: First, calcium hydroxide, humectant, and reinforcing agent are added to mixer 1 and mixed for 30 minutes. No sodium hydroxide or potassium hydroxide is added to the powder. Preferably, the calcium hydroxide is a powder raw material with a fineness of 800 mesh and a calcium hydroxide content greater than 95%.

[0035] Then, the mixed powder is fed into the disc-type spherical granulator 2. The drive unit 24 drives the granulation disc 21 to rotate. The powder rolls, flips and gradually gathers in the granulation disc 21 as the disc moves, forming mother balls 6 with a particle size of less than 1 mm.

[0036] Subsequently, while the granulation disc 21 continues to rotate, liquid is sprayed into the mother ball 6 through the spraying unit 23, and powder is added to the mother ball 6 through the powder feeding unit 22. After spraying, a water film forms on the surface of the mother ball 6; after adding powder, the newly added powder is adsorbed onto the outer surface of the mother ball 6 by the water film. As spraying and powder adding alternate, the mother ball 6 grows layer by layer, and its density increases under the rolling collision action within the granulation disc 21.

[0037] During this process, due to the adhesive properties of calcium hydroxide powder under the influence of moisture, adjacent particles can locally adsorb each other when they come into contact, forming protrusions 52. These protrusions 52 continue to roll with the particles within the granulation disc 21, generating friction with the inner wall of the disc, thus forming a protrusion structure distributed on the surface of the spherical particles. This protrusion structure prevents the outer surface of the particles from becoming a completely smooth sphere, thereby increasing the contact area between the outer surface of the particles and the gas.

[0038] Once the spherical particles have grown to the target particle size, they are fed into a screening machine 3 for screening to obtain spherical particles with a diameter of 2 mm to 5 mm. Subsequently, a pH indicator dye solution is evenly sprayed onto the surface of the screened spherical particles, forming a pH indicator dye layer 53 on the particle surface. Finally, the sprayed spherical particles are sent to a drying oven 4 for drying to obtain a spiky spherical carbon dioxide absorbent 5.

[0039] In a preferred embodiment, the spiky spherical carbon dioxide absorbent 5 comprises, by weight percentage, the following components based on the total mass of the raw materials: 75% to 90% calcium hydroxide, 0.1% to 1% humectant, 0.1% to 5% enhancer, 0.005% to 1% pH indicator dye, and 9% to 13% water, the sum of the weight percentages of each component being 100%.

[0040] The preferred humectant is calcium chloride. Calcium chloride can maintain an appropriate amount of moisture inside the particles, preventing them from becoming brittle. Within the body 51, a porous structure conducive to gas diffusion can be formed inside the particles, while simultaneously improving the particle structural strength. The pH indicator dye is preferably ethyl violet. Ethyl violet changes color with pH changes during the use of the absorbent, thus indicating the state of the absorbent during use.

[0041] In one specific embodiment, the pH indicator dye solution is a mixture of ethyl violet and distilled water, with the ethyl violet having a mass percentage concentration of 0.01%. This mixture is then uniformly sprayed onto the surface of spherical particles with a diameter of 2 mm to 5 mm, followed by drying to ensure a stable distribution of ethyl violet on the outer surface of the particles.

[0042] In one embodiment of process parameters, the rotational speed of the disc-type spherical granulator 2 is 28 rpm. This rotational speed allows the mother pellets 6 to remain in a continuous rolling state within the granulation disc 21, which is beneficial for the uniform adsorption of new powder on the surface of the mother pellets 6 and for promoting particle densification through rolling collisions.

[0043] In one embodiment of the powder-spraying parameters, 880 ml of water is sprayed in for every 2 kg of powder added, and the powder addition and spraying are repeated. After each spraying, a water film forms on the surface of the mother ball 6; after each powder addition, the powder adheres to the surface of the water film. Through multiple cycles, the mother ball 6 gradually grows from a particle size of less than 1 mm to the target particle size. The target particle size is preferably 4 mm. After reaching the target particle size, spherical particles with a particle size of 2 mm to 5 mm are obtained by screening with a screening machine 3.

[0044] In one example of drying parameters, the spherical particles sprayed with ethyl violet solution were fed into a tunnel oven and dried at 130°C for 5 minutes. After drying, the moisture content of the spiked spherical carbon dioxide absorbent 5 was controlled to be between 5% and 15%. When the moisture content is within this range, the particles are less likely to affect the carbon dioxide absorption reaction due to excessively low moisture content, and less likely to affect the storage stability of the particles due to excessively high moisture content.

[0045] In one formulation example, calcium hydroxide comprises 89%, calcium chloride 0.5%, zeolite powder 0.49%, ethyl violet 0.01%, and water 10%. In another formulation example, calcium hydroxide comprises 85%, calcium chloride 0.5%, zeolite powder 4.49%, ethyl violet 0.01%, and water 10%. In yet another formulation example, calcium hydroxide comprises 82%, calcium chloride 1%, zeolite powder 5%, ethyl violet 0.01%, and water 11.99%. The total amount of each component in the above formulations is 100%, and no sodium hydroxide or potassium hydroxide is added.

[0046] The working principle of this embodiment is as follows: After being thoroughly mixed in mixer 1, the powder enters disc-type spherical granulator 2. The granulation disc 21 rotates continuously under the action of drive unit 24. The powder rolls continuously inside the granulation disc 21 under the action of gravity, friction and the rotation of the granulation disc 21 and forms mother ball 6.

[0047] After the liquid spraying unit 23 sprays liquid onto the surface of the mother ball 6, a water film forms on the surface of the mother ball 6; the powder feeding unit 22 then adds powder, which is absorbed by the water film and covers the surface of the mother ball 6. As the liquid spraying and powder feeding alternately cycle, the mother ball 6 gradually increases in size.

[0048] As the mother sphere 6 grows, the particles continuously roll, tumble, and collide with each other within the granulation disc 21. This rolling and collision process removes some of the voids inside the particles, making the particle structure more compact. Calcium hydroxide powder exhibits adhesive properties under the influence of moisture; when adjacent particles briefly come into contact, localized powder particles on their surfaces can adhere to each other, forming protrusions 52. These protrusions 52 continue to roll with the particles and rub against the inner wall of the granulation disc 21, causing them to stably form on the outer surface of the spherical matrix 51.

[0049] Once the particles reach the target particle size, the screening machine 3 sieves the particles according to their size. Particles smaller than 2 mm and larger than 5 mm are sieved out; the unqualified particles are dried, ground into powder, and reused. Particles with a size of 2 mm to 5 mm are retained. Subsequently, a pH indicator dye solution formed by ethyl violet and distilled water is sprayed onto the outer surface of the particles, forming a pH indicator dye layer 53. Finally, the particles enter the drying oven 4 and are dried at a set temperature and time to obtain spiky spherical carbon dioxide absorbent 5 with a moisture content of 5% to 15%.

[0050] During use, carbon dioxide gas enters the absorbent particle stack layer with the airflow. Due to the protrusions 52 distributed on the outer surface of the spherical matrix 51, the contact area between the particle's outer surface and the gas is increased; simultaneously, the porous structure formed by the zeolite powder facilitates gas diffusion into the particle interior. Calcium hydroxide undergoes an absorption reaction with carbon dioxide, and ethyl violet changes color with local pH variations, thus indicating the absorbent's usage status. Because no sodium hydroxide or potassium hydroxide is added to the absorbent, the risk of adverse reactions between the strongly alkaline components and the anesthetic is reduced.

[0051] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for manufacturing a spherical carbon dioxide absorbent with protruding spikes, characterized in that, Includes the following steps: S1, mixing the powder, the powder comprising calcium hydroxide, humectant and reinforcing agent, and without adding sodium hydroxide and potassium hydroxide to the powder; S2, the mixed powder is fed into a disc-type spherical granulator, so that the powder rolls in the disc-type spherical granulator to form mother balls with a particle size of less than 1 mm; S3, under the condition that the disc-type spherical granulator is continuously rotating, liquid and powder are alternately sprayed into the mother ball, so that a water film is formed on the surface of the mother ball and the newly added powder is adsorbed layer by layer and grows. At the same time, adjacent particles are adsorbed to each other to form protrusions, and the protrusions are rubbed against the inner wall of the disc-type spherical granulator to form a protrusion structure distributed on the surface of the spherical particles. S4, the spherical particles are screened to obtain spherical particles with a particle size of 2 mm to 5 mm; S5, spray pH indicator dye solution onto the surface of the screened spherical particles; S6, the sprayed spherical particles are dried to obtain a spherical carbon dioxide absorbent with protruding spikes.

2. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, The spiky spherical carbon dioxide absorbent comprises, by weight percentage, the following components based on the total mass of the raw materials: 75% to 90% calcium hydroxide, 0.1% to 1% humectant, 0.1% to 5% enhancer, 0.005% to 1% pH indicator dye, and 9% to 13% water, the sum of the weight percentages of each component being 100%.

3. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, The humectant is calcium chloride, the enhancer is zeolite powder, and the pH indicator dye is ethyl violet.

4. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, The calcium hydroxide has a fineness of 800 mesh and a content of more than 95%.

5. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, In step S1, the mixing time of the powder is 30 minutes; in step S3, the rotation speed of the disc-type spherical granulator is 28 revolutions per minute.

6. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, In step S3, for every 2 kg of powder added, 880 ml of water is sprayed in, and the powder addition and spraying are repeated until the particle size of the spherical particles reaches 4 mm.

7. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, In step S6, the drying is carried out in a tunnel oven at a temperature of 130°C for 5 minutes. The resulting spiky spherical carbon dioxide absorbent has a moisture content of 5% to 15%.

8. The method for manufacturing the spiked spherical carbon dioxide absorbent according to claim 1, characterized in that, In step S4, a vibrating screen is used to screen the spherical particles according to their diameter. The vibrating screen includes a screen with a 2mm aperture and a screen with a 5mm aperture. The unqualified particles screened out are dried, ground into powder, and reused as the powder material.

9. A spherical carbon dioxide absorbent with protruding spikes, characterized in that, It includes a spherical substrate and protrusions distributed on the outer surface of the spherical substrate, wherein the protrusions are integrally formed with the spherical substrate; The spherical matrix comprises calcium hydroxide, a humectant, a reinforcing agent, and water. A pH-indicating dye layer is disposed on the outer surface of the spherical matrix. The particle size of the spherical matrix is ​​2 mm to 5 mm. The spiked spherical carbon dioxide absorbent does not contain added sodium hydroxide or potassium hydroxide.

10. An apparatus for manufacturing a spiked spherical carbon dioxide absorbent for carrying out the manufacturing method according to any one of claims 1 to 8, characterized in that, It includes a mixer, a disc-type spherical granulator, a drying oven, and a screening machine arranged sequentially along the material flow direction; The mixer is used to mix powders including calcium hydroxide, humectants, and reinforcing agents; The disc-type spherical granulator includes a granulation disc, a powder feeding unit, a liquid spraying unit, and a drive unit. The drive unit is used to drive the granulation disc to rotate. The powder feeding unit is used to add powder into the granulation disc. The liquid spraying unit is used to spray liquid into the granulation disc. The powder feeding unit and the liquid spraying unit are configured to work alternately so that the mother ball grows layer by layer and forms spiky protrusions on the surface of the spherical particles. The drying oven is used to dry the granulated spherical particles; The screening machine is used to screen dried spherical particles according to their diameter.

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