Carbon dioxide high-purity preparation device and method

Abstract

The application relates to the technical field of carbon dioxide preparation, in particular to a high-purity carbon dioxide preparation device and method, which comprises a bottom plate, a rack, a first cylinder, a connecting block and a gas outlet pipe and the like. The top of the bottom plate is connected with the rack, the rack is connected with the first cylinder, the first cylinder is connected with the connecting block, the connecting block is uniformly and interval connected with the gas outlet pipe, and the lower part of the gas outlet pipe is uniformly and interval provided with gas outlet holes. The impurity gas in the raw gas can be adsorbed by the adsorbent, and the carbon dioxide is purified. The gas outlet pipe and the gas outlet hole are uniformly and interval arranged, so that the raw gas can be dispersed, the raw gas is uniformly distributed in the adsorbent, the contact area of the raw gas and the adsorbent is increased, the mass transfer rate of the adsorption process and the overall purification effect are improved, and meanwhile, the utilization rate of the adsorbent is improved.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide preparation technology, and in particular to an apparatus and method for preparing high-purity carbon dioxide. Background Technology

[0002] The preparation of high-purity carbon dioxide refers to the process of removing impurities such as nitrogen, oxygen, and water vapor from raw gas (such as industrial waste gas and flue gas) through a series of processes to obtain high-purity carbon dioxide, which meets the needs of high-end applications such as food, electronics, medical, and supercritical extraction.

[0003] Currently, high-purity carbon dioxide is mainly prepared through adsorption. This involves injecting the raw gas into an adsorbent, which adsorbs impurities from the raw gas to purify the carbon dioxide. The purified carbon dioxide is then compressed using a compressor to achieve a high-purity gaseous form. However, current adsorption methods typically involve injecting the raw gas into the adsorbent through a single tube. This results in uneven distribution of the raw gas, with the gas only contacting specific areas of the adsorbent. Consequently, the contact area between the raw gas and the adsorbent is small, affecting the mass transfer rate and overall purification effect. Other areas may be dead zones, leading to low adsorbent utilization. Summary of the Invention

[0004] In view of this, the present invention provides a device and method for preparing high-purity carbon dioxide, which can overcome the disadvantages of uneven distribution of raw material gas, resulting in a small contact area between the raw material gas and the adsorbent, affecting the mass transfer rate of the adsorption process and the overall purification effect, while other areas may be dead zones, resulting in low utilization of the adsorbent.

[0005] The technical solution of this invention is: a high-purity carbon dioxide preparation device, comprising a base plate, a frame, a first cylinder, a connecting block, an outlet pipe, a second cylinder, a guide pipe, an exhaust box, an exhaust pipe, a compressor, an inlet mechanism, a storage mechanism, a collection mechanism, and a drying mechanism. The base plate is connected to the top of a frame, and the first cylinder is connected to the frame. A connecting block is connected to the first cylinder, and outlet pipes are evenly spaced on the connecting block. Outlet holes are evenly spaced at the bottom of the outlet pipes. The second cylinder is connected to the frame, and a guide pipe is connected to the first cylinder. The guide pipe and the second cylinder are connected and communicate with each other. An exhaust box is connected to the top of the second cylinder, and an exhaust pipe is connected to the top of the exhaust box. A compressor is installed on the exhaust pipe. The inlet mechanism is used to load the raw material gas into the first cylinder. The first cylinder is provided with a storage mechanism for storing adsorbent. The second cylinder is provided with a collection mechanism for collecting distilled water. The drying mechanism is used to dry the purified carbon dioxide.

[0006] Furthermore, the air intake mechanism includes an air intake cylinder, a cover, and an air intake pipe. The top of the first cylinder is connected to the air intake cylinder, the top of the air intake cylinder is connected to the cover, the top of the cover is connected to the air intake pipe, and the air intake pipe and the air intake cylinder are connected.

[0007] Furthermore, the storage mechanism includes a first slider, a storage box, a first external threaded sleeve, a first discharge pipe, and a first valve. The first slider is slidably connected to the frame, and the top of the first slider is connected to a storage box for storing adsorbent. The lower part of the storage box is rotatably connected to the first external threaded sleeve, which is located inside the first cylinder and is connected to the inner wall of the first cylinder by threads. The bottom of the storage box is connected to the first discharge pipe, which passes through the first slider, and the first valve is installed on the first discharge pipe.

[0008] Furthermore, the collection mechanism includes a second slider, a collection box, a second external threaded sleeve, a second discharge pipe, and a second valve. The second slider is slidably connected to the lower right part of the frame, and a collection box for collecting distilled water is connected to the top of the second slider. The second external threaded sleeve is rotatably connected to the lower part of the collection box. The second external threaded sleeve is located inside the second cylinder, and the second external threaded sleeve and the inner wall of the second cylinder are connected by threads. The bottom of the collection box is connected to the second discharge pipe, which passes through the second slider. A second valve is installed on the second discharge pipe.

[0009] Furthermore, the drying mechanism includes a rotating shaft, a rotating frame, rotating rings, and support blocks. The rotating shaft is rotatably connected to the exhaust box, and the rotating frame is connected to the rotating shaft. Rotating rings for placing desiccant are evenly spaced around the rotating frame. There is a notch in the exhaust box, through which the rotating rings can rotate into the exhaust box. Each rotating ring is connected to a support block for holding the desiccant.

[0010] Furthermore, it also includes a filtration mechanism, which includes an mounting ring, a connecting ring, an L-shaped block, and a filter bag. The mounting ring is connected to the bottom of the cover, and an L-shaped groove is opened on the mounting ring. An L-shaped block is connected to the connecting ring, and the L-shaped block is located in the L-shaped groove. A filter bag for filtering dust in the raw material gas is connected to the bottom of the connecting ring, and the filter bag is located in the air inlet cylinder.

[0011] Furthermore, it also includes a catalytic mechanism, which includes a spiral plate and a heater. The spiral plate is connected inside the intake cylinder, the surface of the spiral plate is coated with a catalyst, and the heater is installed on the intake cylinder.

[0012] Furthermore, it also includes a conical hopper, with the second cylinder connected to the conical hopper.

[0013] The present invention also provides a method for preparing a high-purity carbon dioxide preparation device, comprising the following steps:

[0014] S1: Rotate the first external threaded sleeve downwards to remove the storage box from the first cylinder, then pour the adsorbent into the storage box, and then move the storage box back into the first cylinder.

[0015] S2: The raw material gas is loaded into the first cylinder through the inlet pipe. The raw material gas will enter the outlet pipe and be discharged through the outlet hole. The raw material gas comes into contact with the adsorbent, and the adsorbent adsorbs the impurities in the raw material gas and purifies the carbon dioxide.

[0016] S3: The purified carbon dioxide enters the second cylinder through the gas delivery tube. The water in the purified carbon dioxide adheres to the inner wall of the second cylinder and forms distilled water, which flows into the collection box.

[0017] S4: The purified carbon dioxide will enter the compressor through the exhaust box and exhaust pipe. The compressor will compress the purified carbon dioxide to make it reach a high-purity gaseous form.

[0018] S5: The desiccant inside the rotating ring dries the purified carbon dioxide, thoroughly removing moisture from it.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. This invention uses an adsorbent to adsorb impurities in the raw material gas and purify carbon dioxide. The gas outlet pipe and outlet holes are evenly spaced, which disperses the raw material gas and makes it uniformly distributed in the adsorbent, increasing the contact area between the raw material gas and the adsorbent, improving the mass transfer rate of the adsorption process and the overall purification effect, and at the same time, improving the utilization rate of the adsorbent.

[0021] 2. The desiccant inside the rotating ring can dry the purified carbon dioxide, deeply removing moisture from the purified carbon dioxide and improving its purity.

[0022] 3. The filter bag can filter dust in the raw material gas, protect the adsorbent, extend the service life of the adsorbent, and ensure adsorption efficiency.

[0023] 4. The catalyst coated on the surface of the spiral plate can remove trace impurities from the raw material gas and improve the purity of carbon dioxide. As the raw material gas flows along the spiral plate, the contact time between the raw material gas and the catalyst is increased, thereby better removing trace impurities from the raw material gas. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 2This is a cross-sectional view of the first cylindrical body of the present invention.

[0026] Figure 3 This is a three-dimensional structural diagram of the air outlet pipe and air outlet hole of the present invention.

[0027] Figure 4 This is a three-dimensional structural diagram of the air guide pipe, exhaust box, exhaust pipe and compressor of the present invention.

[0028] Figure 5 This is a three-dimensional structural diagram of the storage mechanism of the present invention.

[0029] Figure 6 This is a three-dimensional structural diagram of the collecting mechanism of the present invention.

[0030] Figure 7 This is a three-dimensional structural diagram of the drying mechanism of the present invention.

[0031] Figure 8 This is a three-dimensional structural diagram of the filtration mechanism of the present invention.

[0032] Figure 9 This is a three-dimensional structural diagram of the mounting ring, L-shaped groove, connecting ring, and L-shaped block of the present invention.

[0033] Figure 10 This is a cross-sectional view of the air intake cylinder of the present invention.

[0034] Component names and numbers in the diagram: 1. Base plate, 2. Frame, 3. First cylinder, 4. Connecting block, 5. Air outlet pipe, 6. Air outlet hole, 7. Second cylinder, 8. Air guide pipe, 9. Exhaust box, 10. Exhaust pipe, 11. Compressor, 121. Air inlet cylinder, 122. Cover, 123. Air inlet pipe, 131. First slider, 132. Storage box, 133. First external threaded sleeve, 134. First discharge pipe, 135. 1. Valve, 141. Second slider, 142. Collection box, 143. Second external threaded sleeve, 144. Second discharge pipe, 145. Second valve, 151. Rotating shaft, 152. Rotating frame, 153. Rotating ring, 154. Support block, 161. Mounting ring, 162. L-shaped groove, 163. Connecting ring, 164. L-shaped block, 165. Filter bag, 171. Spiral plate, 172. Heater, 18. Conical bucket. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0036] refer to Figures 1-7 A high-purity carbon dioxide preparation device includes a base plate 1, a frame 2, a first cylinder 3, a connecting block 4, an outlet pipe 5, a second cylinder 7, a guide pipe 8, an exhaust box 9, an exhaust pipe 10, a compressor 11, an air intake mechanism, a storage mechanism, a collection mechanism, and a drying mechanism. The top of the base plate 1 is bolted to the frame 2. The left side of the frame 2 is bolted to the first cylinder 3. The upper part of the first cylinder 3 is connected to the connecting block 4. The outlet pipes 5 are evenly spaced on the connecting block 4. The lower part of the outlet pipes 5 has evenly spaced outlet holes 6. The right side of the frame 2 is bolted to... There is a second cylinder 7. The upper right side of the first cylinder 3 is connected to a gas guide pipe 8. The right end of the gas guide pipe 8 is connected to the upper left side of the second cylinder 7, and the gas guide pipe 8 and the second cylinder 7 are connected. The top of the second cylinder 7 is connected to an exhaust box 9. The top of the exhaust box 9 is connected to an exhaust pipe 10. A compressor 11 is installed at the rear end of the exhaust pipe 10. The gas inlet mechanism is used to load the raw material gas into the first cylinder 3. The first cylinder 3 is provided with a storage mechanism for storing the adsorbent. The second cylinder 7 is provided with a collection mechanism for collecting distilled water. The drying mechanism is used to dry the purified carbon dioxide.

[0037] refer to Figure 1 The air intake mechanism includes an air intake cylinder 121, a cover 122, and an air intake pipe 123. The top of the first cylinder 3 is connected to the air intake cylinder 121. The top of the air intake cylinder 121 is connected to the cover 122 by bolts. The top of the cover 122 is connected to the air intake pipe 123. The air intake pipe 123 and the air intake cylinder 121 are connected.

[0038] refer to Figure 1 and Figure 5 The storage mechanism includes a first slider 131, a storage box 132, a first external threaded sleeve 133, a first discharge pipe 134, and a first valve 135. The first slider 131 is slidably connected to the lower left part of the frame 2. The storage box 132 is connected to the top of the first slider 131. The first external threaded sleeve 133 is rotatably connected to the lower part of the storage box 132. The first external threaded sleeve 133 is located inside the first cylinder 3, and the first external threaded sleeve 133 and the inner wall of the first cylinder 3 are connected by threads. The first discharge pipe 134 is connected to the middle of the bottom of the storage box 132. The first discharge pipe 134 passes through the middle of the first slider 131. The first valve 135 is installed at the front of the first discharge pipe 134.

[0039] Reference image and Figure 6The collection mechanism includes a second slider 141, a collection box 142, a second external threaded sleeve 143, a second discharge pipe 144, and a second valve 145. The second slider 141 is slidably connected to the lower right part of the frame 2. The collection box 142 is connected to the top of the second slider 141. The second external threaded sleeve 143 is rotatably connected to the lower part of the collection box 142. The second external threaded sleeve 143 is located inside the second cylinder 7, and the second external threaded sleeve 143 and the inner wall of the second cylinder 7 are connected by threads. The second discharge pipe 144 is connected to the middle of the bottom of the collection box 142. The second discharge pipe 144 passes through the middle of the second slider 141. The second valve 145 is installed at the front of the second discharge pipe 144.

[0040] refer to Figure 7 The drying mechanism includes a rotating shaft 151, a rotating frame 152, a rotating ring 153, and a support block 154. The rotating shaft 151 is rotatably connected to the right side of the exhaust box 9. The rotating frame 152 is connected to the lower part of the rotating shaft 151. Rotating rings 153 are evenly spaced around the rotating frame 152. There is a notch on the right side of the exhaust box 9 (not marked). Figure 7 As can be seen from the image, the rotating ring 153 can rotate into the exhaust box 9 through this notch, and the lower two sides of the rotating ring 153 are connected to the support blocks 154.

[0041] The operator rotates the first external threaded sleeve 133 downwards, removing it from the first cylinder 3. The storage box 132 also moves out of the first cylinder 3. The adsorbent is then poured into the storage box 132. The first external threaded sleeve 133 and the storage box 132 are then moved back into the first cylinder 3, and the first external threaded sleeve 133 is tightened. At this point, the lower part of the outlet pipe 5 is immersed in the adsorbent. Subsequently, the raw material gas is loaded into the inlet cylinder 121 through the inlet pipe 123, and the raw material gas flows into the first cylinder 3 through the inlet cylinder 121. The raw material gas enters the outlet pipe 5 and exits through the outlet hole 6. The raw material gas contacts the adsorbent, which adsorbs impurities from the raw material gas, purifying the carbon dioxide. The outlet pipe 5 and outlet hole 6 are evenly spaced, thus dispersing the raw material gas and ensuring its uniform distribution within the adsorbent. This increases the contact area between the raw material gas and the adsorbent, improving the mass transfer rate and overall purification effect. Simultaneously, it enhances the utilization rate of the adsorbent. The purified carbon dioxide enters the second stage through the gas guide pipe 8. Inside the second cylinder 7, the water in the purified carbon dioxide adheres to the inner wall of the second cylinder 7, forming distilled water. The distilled water flows into the collection box 142 for collection. Subsequently, the purified carbon dioxide enters the compressor 11 through the exhaust box 9 and exhaust pipe 10. The compressor 11 can compress the purified carbon dioxide to achieve a high-purity gaseous form. The desiccant can be placed in the rotating ring 153, supported by the support block 154. Then, the rotating shaft 151 is rotated, which drives the rotating frame 152 to rotate. The rotating frame 152 drives the rotating ring 153 to rotate, rotating the rotating ring 153 and the desiccant into the exhaust box 9. The desiccant can dry the purified carbon dioxide, deeply removing the water in the purified carbon dioxide and improving the purity of the carbon dioxide. The first valve 135 is opened, and the adsorbent in the storage box 132 is discharged through the first discharge pipe 134 for replacement of the adsorbent. The second valve 145 is opened, and the distilled water in the collection box 142 is discharged through the second discharge pipe 144 for treatment of the distilled water.

[0042] refer to Figure 8 and Figure 9 It also includes a filtration mechanism, which includes an mounting ring 161, a connecting ring 163, an L-shaped block 164, and a filter bag 165. The bottom of the cover 122 is connected to the mounting ring 161 by bolts. The mounting ring 161 has L-shaped grooves 162 on both the left and right sides. The top left and right sides of the connecting ring 163 are connected to L-shaped blocks 164, which are located in the L-shaped grooves 162. The bottom of the connecting ring 163 is connected to the filter bag 165, which is located in the air inlet cylinder 121.

[0043] The raw material gas enters the inlet cylinder 121. The filter bag 165 filters the dust in the raw material gas, protects the adsorbent, extends the service life of the adsorbent, and ensures adsorption efficiency. When the filter bag 165 needs to be replaced, the operator removes the cap 122 from the top of the inlet cylinder 121 and takes the filter bag 165 out of the inlet cylinder 121. Then, the operator rotates the connecting ring 163, which drives the L-shaped block 164 to rotate, turning the L-shaped block 164 out from the depth of the L-shaped groove 162. The L-shaped block 164 is then taken out from the L-shaped groove 162, and the filter bag 165 is removed from the mounting ring 161. To replace the filter bag 165, the operator inserts the L-shaped block 164 into the L-shaped groove 162 and then rotates the connecting ring 163 in the opposite direction, causing the L-shaped block 164 to rotate in the opposite direction until it reaches the depth of the L-shaped groove 162. The filter bag 165 is then installed onto the mounting ring 161.

[0044] refer to Figure 1 and Figure 10 It also includes a catalytic mechanism, which includes a spiral plate 171 and a heater 172. The spiral plate 171 is connected to the lower part of the air intake cylinder 121. The surface of the spiral plate 171 is coated with a catalyst. The heaters 172 are installed on the left and right sides of the lower part of the air intake cylinder 121 by bolts.

[0045] The raw material gas enters the inlet cylinder 121 and flows along the spiral plate 171, reacting with the catalyst coated on the surface of the spiral plate 171 to remove trace impurities and improve the purity of carbon dioxide. The flow of the raw material gas along the spiral plate 171 increases the contact time between the raw material gas and the catalyst, thereby better removing trace impurities. The heater 172 can heat the raw material gas to increase the reaction rate between the raw material gas and the catalyst.

[0046] refer to Figure 6 It also includes a conical hopper 18. The conical hopper 18 is connected to the middle of the second cylinder 7. The water in the purified carbon dioxide adheres to the inner wall of the second cylinder 7 to form distilled water. The distilled water flows into the conical hopper 18 and falls into the collection box 142 through the conical hopper 18, preventing the distilled water from flowing into the gap between the second cylinder 7 and the collection box 142.

[0047] The present invention also provides a method for preparing a high-purity carbon dioxide preparation device, comprising the following steps:

[0048] S1: Rotate the first external threaded sleeve 133 downwards to remove the storage box 132 from the first cylinder 3, then pour the adsorbent into the storage box 132, and then move the storage box 132 back into the first cylinder 3.

[0049] S2: The raw material gas is loaded into the first cylinder 3 through the inlet pipe 123. The raw material gas will enter the outlet pipe 5 and be discharged through the outlet hole 6. The raw material gas comes into contact with the adsorbent, and the adsorbent adsorbs the impurity gas in the raw material gas to purify the carbon dioxide.

[0050] S3: The purified carbon dioxide enters the second cylinder 7 through the gas guide tube 8. The water in the purified carbon dioxide adheres to the inner wall of the second cylinder 7 to form distilled water, which flows into the collection box 142.

[0051] S4: The purified carbon dioxide will enter the compressor 11 through the exhaust box 9 and the exhaust pipe 10. The compressor 11 compresses the purified carbon dioxide to make it reach a high-purity gaseous form.

[0052] S5: The desiccant inside the rotating ring 153 dries the purified carbon dioxide, deeply removing moisture from the purified carbon dioxide.

[0053] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. All equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Contents not described in detail in this invention are existing technologies known to those skilled in the art.

Claims

1. A high-purity carbon dioxide preparation apparatus, comprising a base plate (1) and a frame (2), wherein the top of the base plate (1) is connected to the frame (2), characterized in that, It also includes a first cylinder (3), a connecting block (4), an exhaust pipe (5), a second cylinder (7), an air guide pipe (8), an exhaust box (9), an exhaust pipe (10), a compressor (11), an air intake mechanism, a storage mechanism, a collection mechanism, and a drying mechanism. The first cylinder (3) is connected to the frame (2). The connecting block (4) is connected inside the first cylinder (3). The exhaust pipe (5) is connected to the connecting block (4) at even intervals. The exhaust pipe (5) has an exhaust hole (6) at even intervals at the bottom. The second cylinder (7) is connected to the frame (2). A gas guide pipe (8) is connected to the cylinder (3), and the gas guide pipe (8) is connected to and communicates with the second cylinder (7). An exhaust box (9) is connected to the top of the second cylinder (7), and an exhaust pipe (10) is connected to the top of the exhaust box (9). A compressor (11) is installed on the exhaust pipe (10). The gas inlet mechanism is used to load the raw material gas into the first cylinder (3). The first cylinder (3) is provided with a storage mechanism for storing the adsorbent. The second cylinder (7) is provided with a collection mechanism for collecting distilled water. The drying mechanism is used to dry the purified carbon dioxide. The air intake mechanism includes an air intake cylinder (121), a cover (122), and an air intake pipe (123). The top of the first cylinder (3) is connected to the air intake cylinder (121), the top of the air intake cylinder (121) is connected to the cover (122), the top of the cover (122) is connected to the air intake pipe (123), and the air intake pipe (123) is connected to the air intake cylinder (121). The storage mechanism includes a first slider (131), a storage box (132), a first external threaded sleeve (133), a first discharge pipe (134), and a first valve (135). The first slider (131) is slidably connected to the frame (2). The top of the first slider (131) is connected to a storage box (132) for storing adsorbent. The lower part of the storage box (132) is rotatably connected to the first external threaded sleeve (133). The first external threaded sleeve (133) is located inside the first cylinder (3), and the first external threaded sleeve (133) and the inner wall of the first cylinder (3) are connected by threads. The bottom of the storage box (132) is connected to the first discharge pipe (134). The first discharge pipe (134) passes through the first slider (131), and the first valve (135) is installed on the first discharge pipe (134). The collection mechanism includes a second slider (141), a collection box (142), a second external threaded sleeve (143), a second discharge pipe (144), and a second valve (145). The second slider (141) is slidably connected to the lower right part of the frame (2). The top of the second slider (141) is connected to a collection box (142) for collecting distilled water. The lower part of the collection box (142) is rotatably connected to the second external threaded sleeve (143). The second external threaded sleeve (143) is located inside the second cylinder (7), and the second external threaded sleeve (143) is connected to the inner wall of the second cylinder (7) by threads. The bottom of the collection box (142) is connected to the second discharge pipe (144). The second discharge pipe (144) passes through the second slider (141), and the second valve (145) is installed on the second discharge pipe (144). The drying mechanism includes a rotating shaft (151), a rotating frame (152), a rotating ring (153), and a support block (154). The rotating shaft (151) is rotatably connected to the exhaust box (9). The rotating frame (152) is connected to the rotating shaft (151). The rotating frame (152) is evenly spaced around the circumferential rotating ring (153) for placing desiccant. The exhaust box (9) has a notch through which the rotating ring (153) can rotate into the exhaust box (9). Each rotating ring (153) is connected to a support block (154) for holding the desiccant.

2. The apparatus for preparing high-purity carbon dioxide according to claim 1, characterized in that, It also includes a filtration mechanism, which includes an mounting ring (161), a connecting ring (163), an L-shaped block (164), and a filter bag (165). The bottom of the cover (122) is connected to the mounting ring (161), which has an L-shaped groove (162). The connecting ring (163) is connected to the L-shaped block (164), which is located in the L-shaped groove (162). The bottom of the connecting ring (163) is connected to a filter bag (165) for filtering dust in the raw material gas, which is located in the air inlet cylinder (121).

3. The apparatus for preparing high-purity carbon dioxide according to claim 2, characterized in that, It also includes a catalytic mechanism, which includes a spiral plate (171) and a heater (172). The spiral plate (171) is connected inside the air intake cylinder (121). The surface of the spiral plate (171) is coated with a catalyst, and the heater (172) is installed on the air intake cylinder (121).

4. The apparatus for preparing high-purity carbon dioxide according to claim 3, characterized in that, It also includes a conical hopper (18), and the second cylinder (7) is connected to the conical hopper (18).

5. The apparatus for preparing high-purity carbon dioxide according to claim 4, characterized in that, It also includes preparation methods, Includes the following steps: S1: Rotate the first external threaded sleeve (133) downwards to remove the storage box (132) from the first cylinder (3), then pour the adsorbent into the storage box (132), and then move the storage box (132) into the first cylinder (3); S2: The raw material gas is loaded into the first cylinder (3) through the inlet pipe (123). The raw material gas will enter the outlet pipe (5) and be discharged through the outlet hole (6). The raw material gas comes into contact with the adsorbent, and the adsorbent adsorbs the impurity gas in the raw material gas to purify the carbon dioxide. S3: The purified carbon dioxide enters the second cylinder (7) through the gas delivery tube (8). The water in the purified carbon dioxide adheres to the inner wall of the second cylinder (7) to form distilled water, which flows into the collection box (142). S4: The purified carbon dioxide will enter the compressor (11) through the exhaust box (9) and exhaust pipe (10). The compressor (11) compresses the purified carbon dioxide to make the purified carbon dioxide reach a high-purity gaseous form. S5: The desiccant inside the rotating ring (153) dries the purified carbon dioxide, deeply removing the moisture from the purified carbon dioxide.

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