Device for preparing carbon dioxide gas
By using a separator and a porous baffle in conjunction with a piston to control the gas pressure in a carbon dioxide production device, the problem of the reaction being difficult to stop in traditional devices has been solved, thus achieving controllable reaction and high-purity collection of carbon dioxide.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 房家伟
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional carbon dioxide production devices have difficulty controlling the cessation of the reaction, resulting in resource waste and the inability to promptly dispose of excess carbon dioxide.
The gas pressure is controlled by a separator and a porous baffle inside the conical flask, along with a piston. The reaction is started and stopped by opening and closing the piston, and the purity of carbon dioxide is improved by using a gas washing bottle and a drying bottle.
This achieves controllability of the reaction, reduces resource waste, and improves the purity and collection efficiency of carbon dioxide.
Smart Images
Figure CN224271114U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of chemical experimental equipment technology, and in particular to a device for producing carbon dioxide gas. Background Technology
[0002] Carbon dioxide, as an important industrial gas, is widely used in food processing, fire extinguishing equipment, chemical synthesis, and laboratory preparation. In the laboratory, carbon dioxide is usually produced through the chemical reaction of carbonates with acids (such as calcium carbonate and dilute hydrochloric acid).
[0003] Traditional preparation devices often use simple Kipp generators, but they have shortcomings. Once the reaction starts, it is difficult to control and stop it. In most cases, the reaction continues even after the carbon dioxide has been collected, which not only wastes a lot of experimental resources, but also makes it impossible to deal with the emitted carbon dioxide in a timely manner. Utility Model Content
[0004] To address the problem of wasting a large amount of experimental resources in producing carbon dioxide and the inability to promptly dispose of excess carbon dioxide, this application provides a device for producing carbon dioxide gas.
[0005] The carbon dioxide gas production apparatus provided in this application adopts the following technical solution:
[0006] A device for producing carbon dioxide gas includes a workbench, a conical flask on one side of the top of the workbench, a first rubber stopper movably disposed at the top opening of the conical flask, two sets of holes being formed inside the first rubber stopper, a long-necked funnel movably disposed inside one set of holes, the bottom of the long-necked funnel being located inside the conical flask, and a sealing plug movably disposed at the top opening of the long-necked funnel.
[0007] Another set of holes has a first vent pipe movably installed inside, the bottom of the first vent pipe is located inside the conical flask, the top of the first vent pipe is movably equipped with a rubber sleeve, a first connecting pipe is movably installed on one side of the rubber sleeve, and a piston is fixed on the outer surface of the first vent pipe.
[0008] By adopting the above technical solution, the conical flask can prevent the reaction from being too violent and overflowing the flask mouth. It can continuously add dilute hydrochloric acid to the reaction through the long-necked funnel. By closing and opening the piston to change the gas pressure inside the conical flask, the dilute hydrochloric acid and calcium carbonate can be separated, thus realizing the start and stop of the reaction.
[0009] Preferably, the inner wall of the conical flask is provided with a partition plate, which divides the interior of the conical flask into two chambers, left and right. The long-necked funnel is located in the left chamber, and a porous partition plate is fixed in the right chamber.
[0010] By adopting the above technical solution, the porous partition can be used in conjunction with the piston to achieve solid-liquid separation, and the start and stop of the reaction can be controlled at any time.
[0011] Preferably, a gas washing bottle is provided on the top of the workbench to the right of the conical bottle. A second rubber stopper is movably provided at the top opening of the gas washing bottle. Two sets of guide grooves are provided inside the second rubber stopper. A first air inlet pipe and a second air outlet pipe are movably provided in the two sets of guide grooves respectively. The top of the first air inlet pipe is movably connected to the first connecting pipe through a rubber sleeve. A rubber sleeve is movably provided on the top of the second air outlet pipe, and a second connecting pipe is movably provided on the side of the rubber sleeve.
[0012] By adopting the above technical solution, the gas washing bottle can remove hydrogen chloride gas mixed in carbon dioxide, thereby improving the purity of the produced carbon dioxide.
[0013] Preferably, a drying bottle is provided on the top of the workbench to the right of the gas washing bottle. A third rubber stopper is movably provided at the top opening of the drying bottle. Two sets of guide grooves are provided inside the third rubber stopper. A second air inlet pipe and a third air outlet pipe are movably provided in the two sets of guide grooves, respectively. The top of the second air inlet pipe is movably connected to a second connecting pipe through a rubber sleeve. A rubber sleeve is movably provided on the top of the third air outlet pipe, and a third connecting pipe is movably provided on the side of the rubber sleeve.
[0014] By adopting the above technical solution, the drying bottle can remove water vapor from carbon dioxide to obtain dry carbon dioxide.
[0015] Preferably, a gas collecting mechanism is fixed on the top of the workbench to the right side of the drying bottle, and the gas collecting mechanism includes a water tank.
[0016] By adopting the above technical solution, the water displacement method for gas collection can isolate the produced carbon dioxide from contact with air, preventing the carbon dioxide from mixing with air and resulting in substandard purity.
[0017] Preferably, a rubber sleeve is movably provided at the end of the third connecting pipe away from the third air outlet pipe, a fourth connecting pipe is movably provided at the side opening of the rubber sleeve, a rubber sleeve is movably provided at the end of the fourth connecting pipe away from the third connecting pipe, and an air collecting pipe is movably provided at the top opening of the rubber sleeve.
[0018] By adopting the above technical solution, the produced carbon dioxide is kept completely sealed and will not come into contact with air.
[0019] Preferably, a fixing frame is fixed on the side of the water tank away from the fourth connecting pipe, and the fixing frame holds the gas collecting bottle.
[0020] By adopting the above technical solution, the gas collecting bottle is fixed with a fixing frame, reducing manual contact with the device, increasing the overall stability of the device, and preventing gas collecting failure due to operational errors.
[0021] Preferably, the left-side pipes inside both the gas washing bottle and the drying bottle are longer than the right-side pipes.
[0022] By adopting the above technical solution, the produced carbon dioxide can fully react with the liquid in the gas washing bottle and the drying bottle, thereby improving the purity of the produced carbon dioxide.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. By using a combination of a separator, a porous partition, and a piston, the pressure inside the conical flask can be changed by opening and closing the piston, thus achieving solid-liquid separation and allowing for control over the start and stop of the reaction at any time. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this application;
[0026] Figure 2 This is a schematic cross-sectional view of the conical flask of this application;
[0027] Figure 3 This is a cross-sectional structural diagram of the gas washing bottle in this application;
[0028] Figure 4 This is a cross-sectional view of the drying bottle of this application;
[0029] Figure 5 This is a cross-sectional structural diagram of the gas washing mechanism of this application.
[0030] Reference numerals: 1. Workbench; 2. Conical flask; 21. First rubber stopper; 22. Hole; 23. Porous partition; 24. Separator; 3. Long-necked funnel; 31. Sealing plug; 4. First vent pipe;
[0031] 5. Rubber sleeve; 6. First connecting pipe; 7. Piston; 8. Gas washing bottle; 81. Second rubber stopper; 82. First air inlet pipe; 83. Second air outlet pipe; 84. Second connecting pipe;
[0032] 9. Drying bottle; 91. Third rubber stopper; 92. Second air inlet pipe; 93. Third air outlet pipe; 94. Third connecting pipe;
[0033] 10. Gas collection mechanism; 101. Water tank; 102. Gas collection bottle; 103. Gas collection pipe; 104. Fourth connecting pipe; 105. Fixing frame; Detailed Implementation
[0034] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0035] This application discloses an apparatus for producing carbon dioxide gas.
[0036] Reference Figure 1 , Figure 2 A device for producing carbon dioxide gas includes a workbench 1. A conical flask 2 is mounted on one side of the top of the workbench 1. The design of the conical flask 2 prevents the reaction liquid inside from overflowing even under vigorous reaction conditions. A first rubber stopper 21 is movably mounted at the top opening of the conical flask 2. Both the top opening of the conical flask 2 and the first rubber stopper 21 are conical, improving the sealing performance. The first rubber stopper 21 is made of corrosion-resistant material. A partition plate 24 is provided on the inner wall of the conical flask 2, dividing the interior of the conical flask 2 into left and right chambers. A long-necked funnel 3 is located in the left chamber, and a porous partition plate 23 is fixed in the right chamber. The first rubber stopper 21 has two sets of holes 22 inside. A long-necked funnel 3 is movably installed inside the first set of holes 22. The bottom of the long-necked funnel 3 is located inside the conical flask 2. A sealing plug 31 is movably installed at the top opening of the long-necked funnel 3. A first vent pipe 4 is movably installed inside the other set of holes 22. The lower half of the first vent pipe 4 is located inside the conical flask 2. A rubber sleeve 5 is movably installed at the top of the first vent pipe 4. The radius of the rubber sleeve 5 is two millimeters larger than the radius of the first vent pipe 4. When the first vent pipe 4 is connected to the rubber sleeve 5, Vaseline needs to be applied to the outer surface of the first vent pipe 4 to ensure the device is sealed. A first connecting pipe 6 is movably installed on one side of the rubber sleeve 5. A piston 7 is fixed on the outer surface of the first vent pipe 4 at the top of the first rubber plug 21.
[0037] It should be noted that the function of the long-necked funnel 3 is to increase the amount of dilute hydrochloric acid required for the reaction. The sealing plug 31 can prevent the dilute hydrochloric acid from being exposed to air for a long time. When the piston 7 is closed, the dilute hydrochloric acid and calcium carbonate continuously produce carbon dioxide, which increases the pressure inside the conical flask 2. The long-necked funnel 3 acts as a pressure relief mechanism. The partition plate 24 is one centimeter away from the bottom of the conical flask 2, allowing the dilute hydrochloric acid entering through the long-necked funnel 3 to flow through the gap between the partition plate 24 and the top of the conical flask 2 into the chamber with the porous partition plate 23. Inside, through the principle of communicating vessels, the height of dilute hydrochloric acid in both chambers is equal, and the reaction can be continued by directly adding dilute hydrochloric acid to the long-necked funnel 3. The porous partition 23 is made of corrosion-resistant material to prevent it from being corroded by dilute hydrochloric acid during long-term reaction. The distance between the porous partition 23 and the bottom of the conical flask 2 is two centimeters, and the first gas outlet pipe 4 is inserted into the conical flask 2 by only one centimeter to prevent dilute hydrochloric acid from entering the first gas outlet pipe 4 during the reaction if it is inserted too deeply. The piston 7 is a prior art structure, so it will not be described in detail here.
[0038] Reference Figure 3 and Figure 4A gas washing bottle 8 is located on the top of the workbench 1 to the right of the conical flask 2. A second rubber stopper 81 is movably installed at the top opening of the gas washing bottle 8. The second rubber stopper 81 has two sets of guide grooves inside. A first air inlet pipe 82 is movably installed in the left guide groove, and a second air outlet pipe 83 is movably installed in the right guide groove. A rubber sleeve 5 is fitted on the top of the first air inlet pipe 82, and the rubber sleeve 5 is movably connected to a first connecting pipe 6. A rubber sleeve 5 is fitted on the top of the second air outlet pipe 83, and a second connecting pipe 84 is fitted on the side of the rubber sleeve 5. A drying bottle 9 is located on the top of the workbench 1 to the right of the gas washing bottle 8. A third rubber stopper 91 is movably installed at the top opening of the drying bottle 9. The third rubber stopper 91 has two sets of guide grooves inside. A second air inlet pipe 92 is movably installed in the left guide groove, and a third air outlet pipe 93 is movably installed in the right guide groove. A rubber sleeve 5 is fitted on the top of the second air inlet pipe 92, and the rubber sleeve 5 is movably connected to a second connecting pipe 84. A rubber sleeve 5 is movably installed on the top of the third air outlet pipe 93, and a third connecting pipe 94 is movably installed on the side of the rubber sleeve 5.
[0039] It is important to note that both the top opening of the gas washing bottle 8 and the second rubber stopper 81 are conical to ensure the airtightness of the gas washing bottle 8. Since a small amount of hydrogen chloride gas and water vapor are produced during the reaction of dilute hydrochloric acid and calcium carbonate, resulting in impure carbon dioxide gas and affecting subsequent experiments, a saturated sodium bicarbonate solution is placed in the gas washing bottle 8. The bottom of the first inlet pipe 82 is positioned one centimeter above the bottom of the gas washing bottle 8 to ensure that the hydrogen chloride gas mixed in the carbon dioxide gas reacts fully with the saturated sodium bicarbonate solution, thus obtaining carbon dioxide free of hydrogen chloride. The distance between the bottom of the second outlet pipe 83 and the saturated sodium bicarbonate solution is at least two centimeters to ensure that the second outlet pipe 83 does not come into contact with the saturated sodium bicarbonate solution. The structure of the drying bottle 9 is the same as that of the gas washing bottle 8, so it will not be described in detail here. The difference is that the drying bottle 9 contains concentrated sulfuric acid. When carbon dioxide passes through the concentrated sulfuric acid, the water vapor in the carbon dioxide is absorbed by the concentrated sulfuric acid. It is important to note that all the above pipes are made of corrosion-resistant materials, and the inner wall of the rubber sleeve 5 is coated with petroleum jelly to ensure the airtightness of the apparatus.
[0040] Reference Figure 5 A gas collecting mechanism 10 is provided on the top of the workbench 1 to the right of the drying bottle 9. The gas collecting mechanism 10 includes a water tank 101. A rubber sleeve 5 is fitted on the end of the third connecting pipe 94 away from the third gas outlet pipe 93. A fourth connecting pipe 104 is movably provided at the side opening of the rubber sleeve 5. A rubber sleeve 5 is movably provided at the end of the fourth connecting pipe 104 away from the third connecting pipe 94. A gas collecting pipe 103 is fitted at the top opening of the rubber sleeve 5. A fixing frame 105 is fixed on the side of the water tank 101 away from the fourth connecting pipe 104. The fixing frame 105 clamps and fixes the gas collecting bottle 102.
[0041] It should be noted that the liquid in water tank 101 is a saturated sodium bicarbonate solution. Since carbon dioxide is slightly soluble in water, the water in the carbon dioxide collection method is replaced with a saturated sodium bicarbonate solution. This can collect high-purity carbon dioxide and avoid the collection efficiency being slowed down due to the carbon dioxide dissolving in water. Gas collecting bottle 102 is filled with saturated sodium bicarbonate solution, and the opening of gas collecting bottle 102 is completely immersed in the sodium bicarbonate solution in water tank 101.
[0042] The implementation principle of the carbon dioxide gas production device in this application embodiment is as follows: First, apply Vaseline to the inner wall of each rubber sleeve 5. Then, connect each pipe to the rubber sleeve 5 in sequence. Next, apply Vaseline to the first rubber stopper 21, the second rubber stopper 81, the third rubber stopper 91, and the sealing stopper 31, and insert them into their respective bottle mouths. Then, hold the conical flask 2 with both hands and put the gas collecting tube 103 into water. If bubbles emerge from the gas collecting tube 103 after a few minutes, it proves that the device is airtight and carbon dioxide production can begin. Place the block of calcium carbonate on the porous partition 23, open the sealing stopper 31, pour in dilute hydrochloric acid, and stop when the dilute hydrochloric acid covers the calcium carbonate on the porous partition 23. Put the sealing stopper 31 back in and open the piston 7. At this time, the reaction has started. The carbon dioxide that has been produced reaches the gas collecting tube 103 through the gas washing bottle 8 and the drying bottle 9. At this time, the ignition point is... A lit matchstick is placed at the outlet of the gas collecting tube 103. If the matchstick extinguishes immediately, it proves that the carbon dioxide gas has completely reached the gas collecting tube 103 and gas collection can proceed. Otherwise, continue to wait. Then, place the gas collecting tube 103 in the water tank 101. Invert the gas collecting bottle 102 filled with saturated sodium bicarbonate solution and clamp it on the fixing frame 105. The top of the gas collecting tube 103 is at the top of the gas collecting bottle 102. After the gas collection is completed, close the piston 7 and open the sealing plug 31. At this time, the dilute hydrochloric acid and calcium carbonate in the conical flask 2 are still reacting. However, since the carbon dioxide produced cannot be discharged, the gas pressure in the conical flask 2 increases, forcing the dilute hydrochloric acid in the chamber where the porous partition 23 is located into the other chamber. The excess air in the other chamber is discharged through the long-necked funnel 3. When the height of the dilute hydrochloric acid is lower than the porous partition 23, the reaction can stop. Open the piston 7 again, and the reaction can continue.
[0043] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.
Claims
1. An apparatus for producing carbon dioxide gas, characterized in that: The device includes a workbench (1), a conical flask (2) on one side of the top of the workbench (1), a first rubber stopper (21) movably provided at the top opening of the conical flask (2), two sets of holes (22) being provided inside the first rubber stopper (21), a long-necked funnel (3) movably provided inside one set of the holes (22), the bottom of the long-necked funnel (3) being located inside the conical flask (2), and a sealing plug (31) movably provided at the top opening of the long-necked funnel (3); Another set of holes (22) are provided with a first vent pipe (4) inside. The bottom of the first vent pipe (4) is located inside the conical flask (2). The top of the first vent pipe (4) is provided with a rubber sleeve (5). A first connecting pipe (6) is provided on one side of the rubber sleeve (5). A piston (7) is fixed on the outer surface of the first vent pipe (4).
2. The apparatus for producing carbon dioxide gas according to claim 1, characterized in that: The conical flask (2) has an inner wall partition plate (24) that divides the interior of the conical flask (2) into two chambers, left and right. The long-necked funnel (3) is located inside the left chamber, and a porous partition plate (23) is fixed inside the right chamber.
3. The apparatus for producing carbon dioxide gas according to claim 1, characterized in that: The top of the workbench (1) is located on the right side of the conical flask (2) and a gas washing bottle (8) is provided. A second rubber stopper (81) is movably provided at the top opening of the gas washing bottle (8). Two sets of guide grooves are provided inside the second rubber stopper (81). A first air inlet pipe (82) and a second air outlet pipe (83) are movably provided in the two sets of guide grooves respectively. The top of the first air inlet pipe (82) is movably connected to the first connecting pipe (6) through a rubber sleeve (5). The top of the second air outlet pipe (83) is movably provided with a rubber sleeve (5). A second connecting pipe (84) is movably provided on the side of the rubber sleeve (5).
4. The apparatus for producing carbon dioxide gas according to claim 1, characterized in that: The top of the workbench (1) is located to the right of the gas washing bottle (8) and a drying bottle (9) is provided. A third rubber stopper (91) is movably provided at the top opening of the drying bottle (9). Two sets of guide grooves are provided inside the third rubber stopper (91). A second air inlet pipe (92) and a third air outlet pipe (93) are movably provided in the two sets of guide grooves respectively. The top of the second air inlet pipe (92) is movably connected to the second connecting pipe (84) through a rubber sleeve (5). A rubber sleeve (5) is movably provided on the top of the third air outlet pipe (93). A third connecting pipe (94) is movably provided on the side of the rubber sleeve (5).
5. The apparatus for producing carbon dioxide gas according to claim 1, characterized in that: The top of the workbench (1) is fixed with a gas collecting mechanism (10) located to the right of the drying bottle (9), and the gas collecting mechanism (10) includes a water tank (101).
6. The apparatus for producing carbon dioxide gas according to claim 4, characterized in that: A rubber sleeve (5) is movably provided at one end of the third connecting pipe (94) away from the third air outlet pipe (93). A fourth connecting pipe (104) is movably provided at the side opening of the rubber sleeve (5). A rubber sleeve (5) is movably provided at one end of the fourth connecting pipe (104) away from the third connecting pipe (94). An air collecting pipe (103) is movably provided at the top opening of the rubber sleeve (5).
7. The apparatus for producing carbon dioxide gas according to claim 5, characterized in that: A fixing frame (105) is fixed on the side of the water tank (101) away from the fourth connecting pipe (104), and the fixing frame (105) holds the gas collecting bottle (102).
8. The apparatus for producing carbon dioxide gas according to claim 4, characterized in that: The left-side pipes inside both the gas washing bottle (8) and the drying bottle (9) are longer than the right-side pipes.