System for improving carbon capture alkali production crystal purity by using nanobubbles
By introducing a nanobubble generator and a temperature control system into the carbon capture alkali crystallization process, the problems of low mass transfer efficiency and poor crystallization purity in traditional methods have been solved, achieving efficient carbon capture and improved crystallization purity.
Patent Information
- Application Number
- CN202422816141.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-19
AI Technical Summary
In traditional carbon capture and alkaline crystallization processes, the low mass transfer efficiency of the liquid film leads to poor crystallization purity and low efficiency, especially in high salinity and low surface tension environments where the reaction process is chaotic.
A nanobubble generator is used to convert carbon dioxide gas into nano-sized bubbles, which are then introduced into a carbonization tower to react with ammonium brine. The reaction conditions are precisely controlled by a temperature control system to promote mass transfer at the gas-liquid interface, thereby improving the reaction rate and crystallization purity.
It significantly improves mass transfer efficiency and the controllability of the reaction process, enhances carbon capture efficiency and crystallization purity, and solves the problems of low efficiency and poor purity in traditional methods.
Smart Images
Figure CN223542953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of carbon capture alkali production and purification, specifically to a system that utilizes nanobubbles to improve the crystallization purity of carbon capture alkali production. Background Technology
[0002] Traditional methods for carbon capture and alkaline crystallization typically employ conventional bubble diffusion, but these methods suffer from low liquid film mass transfer efficiency and chaotic reaction processes, leading to poor crystallization purity and low efficiency. However, by introducing nanoscale bubbles to address the specific conditions of high salinity and low surface tension in brine environments, mass transfer efficiency and reaction process controllability can be significantly improved, thereby effectively enhancing carbon capture efficiency and crystallization purity. Utility Model Content
[0003] This invention proposes a system for improving the purity of alkali crystallization by utilizing nanobubbles in carbon capture. The system includes a gas pretreatment device, the input of which is connected to a carbon dioxide gas source, and the output of which is connected to a carbonization tower via a connecting pipe. A brine tank for supplying brine is connected to the carbonization tower, and a nanobubble generator is installed on the connecting pipe.
[0004] A further feature of this invention is that the gas pretreatment device is also connected to a waste gas pipeline for discharging waste gas, and the carbonization tower is also connected to the waste gas pipeline.
[0005] A further configuration of this invention is as follows: the gas pretreatment device includes a compressor, the gas source is connected to the input end of the compressor, the output end of the compressor is connected to a refrigerated dryer, the output end of the refrigerated dryer is connected to a filter, the output end of the filter is connected to a purification membrane, and the output end of the purification membrane is connected to the nanobubble generator.
[0006] A further feature of this invention is that it includes a temperature control system comprising six temperature controllers connected in parallel, one of which is installed on the connecting pipe, and the other five are installed on the carbonization tower, each corresponding to a different structural layer within the carbonization tower.
[0007] A further feature of this invention is that a drain pipe is connected to the carbonization tower, a shut-off valve is installed on the drain pipe, a spray pipe is connected to the drain pipe, the spray pipe is located upstream of the shut-off valve, the other end of the spray pipe is connected to the carbonization tower, and a solenoid valve is installed on the spray pipe.
[0008] The beneficial effects of this invention are as follows: by setting up a nanobubble generator, carbon dioxide gas can be converted into nano-sized bubbles, which are then introduced into the carbonization tower to react with ammonium brine. This enhances the gas-liquid interface mass transfer, accelerates the reaction between gasified carbon dioxide and ammonium brine, promotes crystallization, and maintains the purity of the crystals. Attached Figure Description
[0009] Figure 1 A schematic diagram of the structure of this utility model is shown.
[0010] Reference numerals in the attached drawings: 1. Gas pretreatment device; 11. Compressor; 12. Refrigerated dryer; 13. Filter; 14. Purification membrane; 2. Connecting pipe; 3. Carbonization tower; 4. Brine tank; 5. Nano bubble generator; 6. Exhaust gas pipeline; 7. Temperature control system; 71. Thermostat; 8. Drain pipe; 81. Shut-off valve; 9. Spray pipe; 91. Solenoid valve. Detailed Implementation
[0011] Those skilled in the art can refer to the content of this document and appropriately improve the process parameters to achieve the desired result. It should be particularly noted that all similar substitutions and modifications are obvious to those skilled in the art and are considered to be included in this invention. The methods and applications of this invention have been described through preferred embodiments. Those skilled in the art can make modifications or appropriate alterations and combinations to the methods and applications described herein without departing from the content, spirit, and scope of this invention to realize and apply the technology of this invention.
[0012] This invention proposes a system for improving the purity of alkali crystallization using nanobubbles in carbon capture. The system includes a gas pretreatment device 1, whose input is connected to a carbon dioxide source to provide carbon dioxide to the system. The output of the gas pretreatment device 1 is connected to a carbonization tower 3 via a connecting pipe 2. A brine tank 4 is connected to the carbonization tower 3, providing brine for the reaction with carbon dioxide. A nanobubble generator 5 is installed on the connecting pipe 2, which converts carbon dioxide gas into nano-sized bubbles, which are then introduced into the carbonization tower 3 for reaction.
[0013] The gas pretreatment device 1 is also connected to an exhaust gas pipe 6 for discharging the exhaust gas generated after gas pretreatment; the top of the carbonization tower 3 is also connected to the exhaust gas pipe 6 to remove the exhaust gas generated in the carbonization tower 3. The exhaust gas pipe 6 can introduce the discharged exhaust gas into the exhaust gas treatment equipment for treatment.
[0014] The gas pretreatment device 1 includes a compressor 11, a gas source connected to the input end of the compressor 11, a refrigerated dryer 12 connected to the output end of the compressor 11, a filter 13 connected to the output end of the refrigerated dryer 12, a purification membrane 14 connected to the output end of the filter 13, and a nanobubble generator 5 connected to the output end of the purification membrane 14. Thus, the pretreatment of carbon dioxide gas is achieved through the compressor 11, the refrigerated dryer 12, the filter 13, and the purification membrane 14.
[0015] It also includes a temperature control system 7, which comprises six temperature controllers connected in parallel. One temperature controller is installed on the connecting pipe 2 and located downstream of the nanobubble generator 5 to achieve precise control of the carbon dioxide gas temperature within the connecting pipe 2. The other five controllers are installed on the carbonization tower 3 and are respectively set for different structural layers within the carbonization tower 3. That is, a temperature controller 71 is set for each of the gas outlet layer, filter layer, spray layer, reaction layer, and gas inlet layer within the carbonization tower 3 to achieve precise temperature control within the carbonization tower 3.
[0016] The carbonization tower 3 is also connected to a drain pipe 8, which is equipped with a shut-off valve 81. The drain pipe 8 is also connected to a spray pipe 9, which is connected upstream of the shut-off valve 81. The other end of the spray pipe 9 is connected to the carbonization tower 3 connecting pipe 2 to meet the spraying requirements inside the carbonization tower 3. A solenoid valve 91 is installed on the spray pipe 9.
[0017] Working process: First, prepare or pretreat a salt solution, and then pretreat carbon dioxide gas.
[0018] Secondly, ammonium brine is added, and then nanobubbles are added into the reaction tower to control conditions such as temperature, pressure, and angle plate rate to guide the crystallization reaction.
[0019] Finally, the crystallized products are collected, separated, and dried.
[0020] The carbon capture alkali production system disclosed in this application breaks through conventional mass transfer barriers by introducing nanoscale bubbles, thereby increasing the frequency and spatial efficiency of intermolecular contacts and enhancing the solubility and reaction rate of reactants. By precisely controlling conditions such as temperature and pressure, carbon dioxide and ammonified brine are better combined, promoting the formation and growth of carbonate crystal nuclei and ensuring the purity and control of the crystallization process.
[0021] In summary, by setting up a nanobubble generator 5, this utility model can convert carbon dioxide gas into nano-sized bubbles, and then introduce the nanobubbles into the carbonization tower 3 to react with ammonium brine. This can enhance the mass transfer at the gas-liquid interface, accelerate the reaction between gasified carbon dioxide and ammonium brine, promote crystallization, and maintain the purity of the crystals.
[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be within the protection scope of the present utility model.
Claims
1. A system for improving the purity of alkali crystallization by utilizing nanobubbles, characterized in that: It includes a gas pretreatment device (1), the input end of which is connected to a carbon dioxide gas source, the output end of which is connected to a carbonization tower (3) through a connecting pipe (2), a brine tank (4) for supplying brine is connected to the carbonization tower (3), and a nanobubble generator (5) is installed on the connecting pipe (2).
2. The system for improving the purity of alkali crystallization by utilizing nanobubbles according to claim 1, characterized in that: The gas pretreatment device (1) is also connected to a waste gas pipe (6) for discharging waste gas, and the carbonization tower (3) is also connected to the waste gas pipe (6).
3. The system for improving the purity of alkali crystallization by utilizing nanobubbles according to claim 1, characterized in that: The gas pretreatment device (1) includes a compressor (11), the gas source is connected to the input end of the compressor (11), the output end of the compressor (11) is connected to a refrigerated dryer (12), the output end of the refrigerated dryer (12) is connected to a filter (13), the output end of the filter (13) is connected to a purification membrane (14), and the output end of the purification membrane is connected to the nanobubble generator (5).
4. The system for improving the purity of alkali crystallization by utilizing nanobubbles according to claim 1, characterized in that: It also includes a temperature control system (7), which includes six temperature controllers (71) arranged in parallel. One of the temperature controllers (71) is installed on the connecting pipe (2), and the other five temperature controllers are installed on the carbonization tower (3) and are respectively arranged corresponding to different structural layers in the carbonization tower (3).
5. The system for improving the purity of alkali crystallization by utilizing nanobubbles according to claim 1, characterized in that: The carbonization tower (3) is also connected to a drain pipe (8), a shut-off valve (81) is installed on the drain pipe (8), a spray pipe (9) is also connected to the drain pipe (8), the spray pipe (9) is located upstream of the shut-off valve (81), the other end of the spray pipe (9) is connected to the carbonization tower (3), and a solenoid valve (91) is installed on the spray pipe (9).