Temperature-controllable concentrated sulfuric acid dilution equipment
Through a temperature control system combining a double-layer glass kettle and a high-low temperature integrated machine, the problem of temperature out of control during the dilution process of concentrated sulfuric acid is solved, the safety and stability of the dilution process are achieved, and the safe use of organic solvents is ensured.
Patent Information
- Application Number
- CN202421535463.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-01
AI Technical Summary
When organic solvents are used as diluents, the temperature out of control during the dilution process of concentrated sulfuric acid leads to volatilization of solvents and oxidation to form peroxides, which poses safety hazards and quality problems.
The combination of double-layer glass kettle and high-low temperature integrated machine is used to control the drip acceleration rate through a constant pressure drop funnel, and the temperature-controllable high-low temperature integrated machine is used for cooling, and the speed of the mixing motor is controlled through the speed control box to achieve the temperature of the dilution process below 5℃.
It significantly improves the safety and temperature controllability of the dilution process, avoids solvent volatility and oxide formation, and ensures the safety and stability of the dilution process.
Smart Images
Figure CN223159129U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical production, and particularly relates to a concentrated sulfuric acid dilution device with controllable temperature. Background Art
[0002] Sulfuric acid is an active dibasic inorganic acid and an important chemical raw material. It can be used to manufacture fertilizers, drugs, explosives, pigments, detergents, storage batteries, etc., and is also widely used in industries such as purification of petroleum, metal smelting, and dyes. And it is commonly used as a chemical reagent, and can be used as a dehydrating agent, sulfonating agent, and catalyst in organic synthesis. In the process of chemical production, sulfuric acid is mostly stored as concentrated sulfuric acid and diluted before use for processing and production. However, a large amount of heat will be released during the dilution of concentrated sulfuric acid, which will heat up the diluent, resulting in uncontrollable temperature of the diluent. For organic solvents used as diluents, it may cause solvent volatilization, posing great potential safety hazards and quality problems. In addition, concentrated sulfuric acid has strong oxidizing properties and can oxidize organic solvent diluents into peroxides with unstable chemical properties at higher temperatures. These peroxides will be excited and cause explosions under certain external stimuli, posing great potential safety hazards. Therefore, in order to improve the safety and stability when using organic solvents as diluents to dilute concentrated sulfuric acid, and the controllability of the low temperature of the system during the dilution process of concentrated sulfuric acid, this set of equipment is designed. Summary of the Utility Model
[0003] (1) Technical Problems to be Solved
[0004] The technical problem to be solved by the utility model is: the problem of temperature runaway, volatilization, and oxidation by concentrated sulfuric acid to form peroxides, resulting in safety and quality accidents when using organic solvents as diluents for concentrated sulfuric acid.
[0005] (2) Technical Solutions
[0006] To solve the above technical problems, the utility model provides a concentrated sulfuric acid dilution device with controllable temperature, which includes a double-layer glass kettle 4, a glass kettle cover 11, a bracket 2, and a high and low temperature all-in-one machine 6; the double-layer glass kettle 4 is supported in the middle of the bracket 2; a glass kettle cover 11 is arranged at the upper end of the double-layer glass kettle 4, and a liquid inlet and a liquid outlet are arranged on the side of the double-layer glass kettle 4. The liquid inlet and the liquid outlet are connected to the high and low temperature all-in-one machine 6 through a liquid delivery pipe 5, and a discharge valve 13 is arranged at the bottom of the double-layer glass kettle 4; a constant pressure dropping funnel 1, a lid 9, a thermometer 8, and a gas release valve 10 are arranged on the glass kettle cover 11; the top of the stirring paddle 12 passes through the glass kettle cover 11 and is fixedly connected to the output shaft of the stirring motor 7, and the bottom paddle of the stirring paddle 12 extends into the double-layer glass kettle 4; the stirring motor 7 is fixedly installed in the middle of the top of the bracket 2 and is connected to the speed regulation box 3 by wiring.
[0007] Wherein, the paddle of the stirring paddle is made of polytetrafluoroethylene material.
[0008] Among them, a polytetrafluoroethylene acid and alkali resistant coating is provided on the surface of the paddle rod of the stirring paddle.
[0009] Among them, the double-layer glass kettle and the glass kettle cover adopt a detachable ground joint connection structure.
[0010] Among them, the middle part of the glass kettle cover is connected to the stirring paddle through a ceramic bearing
[0011] (III) Beneficial effects
[0012] Compared with the prior art, the utility model has the following beneficial effects: by controlling the dropping rate of concentrated sulfuric acid through a constant pressure dropping funnel, using a high and low temperature integrated machine with controllable temperature as a cooling source to cool the dilution process of concentrated sulfuric acid, and controlling the rotation speed of the stirring motor through a speed control box, the heat in the dilution process of concentrated sulfuric acid can be instantly transferred and removed, realizing that the temperature control in the dilution process can reach below 5 °C, meeting the dilution conditions of concentrated sulfuric acid when an organic solvent is used as a diluent, and significantly improving the safety of the dilution process. Description of the drawings
[0013] Figure 1 It is a schematic structural diagram of a concentrated sulfuric acid dilution device with controllable temperature of the utility model.
[0014] Figure 2 It is a top view of the glass kettle cover.
[0015] Explanation of the marks in the figure: 1. Constant pressure dropping funnel; 2. Bracket; 3. Speed control box; 4. Double-layer glass kettle; 5. Liquid infusion pipe; 6. High and low temperature integrated machine; 7. Stirring motor; 8. Thermometer; 9. Lid; 10. Air release valve; 11. Glass kettle cover; 12. Stirring paddle; 13. Discharge valve; 14. Concentrated sulfuric acid feeding port; 15. Feeding port; 16. Air release port; 17. Stirring paddle port; 18. Temperature measuring port. Specific implementation manners
[0016] To make the purpose, content, and advantages of the utility model clearer, the following further describes in detail the specific implementation manners of the utility model with reference to the drawings and embodiments.
[0017] As Figure 1-2As shown in the figure, this embodiment provides a sulfuric acid dilution device with controllable temperature, which includes a double-layer glass kettle 4, a glass kettle cover 11, a bracket 2, and a high and low temperature integrated machine 6. The upper end of the double-layer glass kettle 4 is fixedly connected to the glass kettle cover 11. The side is fixedly connected to the high and low temperature integrated machine 6 through a liquid inlet and a liquid outlet via a liquid delivery pipe 5. The bottom is fixedly connected to a discharge valve 13. The glass kettle cover 11 is fixedly connected with a constant pressure dropping funnel 1, a lid 9, a thermometer 8, and a gas release valve 10. The middle of the glass kettle cover 11 is fixedly connected to a stirring paddle 12 through a ceramic bearing. The top of the stirring paddle 12 is fixedly connected to the output shaft of a stirring motor 7, and the bottom blades thereof extend into the double-layer glass kettle 4. The stirring motor 7 is fixedly installed in the middle of the top of the bracket 2 and is connected to a speed control box 3 by wiring.
[0018] Furthermore, the outer side of the double-layer glass kettle 4 is provided with a liquid inlet and a liquid outlet, and the high and low temperature integrated machine 6 is fixedly connected to the liquid inlet and outlet through a liquid delivery pipe 5. When diluting concentrated sulfuric acid, the cooling medium cooled by the high and low temperature integrated machine continuously and rapidly takes away heat from the double-layer glass kettle, ensuring that the temperature inside the kettle is relatively low.
[0019] Furthermore, the blades of the stirring paddle 12 are made of polytetrafluoroethylene material, and the surface of the paddle rod is provided with a polytetrafluoroethylene acid and alkali resistant coating, which can effectively prevent the stirring paddle from being corroded by sulfuric acid.
[0020] Furthermore, the double-layer glass kettle 4 and the glass kettle cover 11 adopt a detachable structure with ground joint connection, which is convenient for cleaning the inside of the double-layer glass kettle.
[0021] In this embodiment, when concentrated sulfuric acid needs to be diluted, first add a sufficient amount of diluent into the double-layer glass kettle through the feeding port 15. Open the speed control box 3 to adjust the speed of the stirring motor 7 and open the high and low temperature integrated machine 6 to cool the diluent. After the diluent reaches the required temperature, weigh the concentrated sulfuric acid in the constant pressure dropping funnel 1 and install it at the concentrated sulfuric acid feeding port 14 on the glass kettle cover 11. Slowly open the constant pressure dropping funnel 1 to start dropping the concentrated sulfuric acid. During the dropping process, control the temperature of the diluent by adjusting the set temperature of the high and low temperature integrated machine 6 and the feeding speed of the constant pressure dropping funnel 1. When the dilution is completed, discharge the sulfuric acid in the double-layer glass kettle from the discharge valve 13 for use.
[0022] It should be noted that the specific structures, working principles, and circuit structures of the high and low temperature integrated machine, speed control box, and stirring motor used in this device are all prior arts. They can work only by connecting their respective power supply wires to the power supply.
[0023] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.
Claims
1. A sulfuric acid dilution device with controllable temperature, characterized in that, It includes a double-layer glass kettle (4), a glass kettle cover (11), a stirring paddle (12), a bracket (2) and a high and low temperature integrated machine (6); the double-layer glass kettle (4) is supported in the middle of the bracket (2); a glass kettle cover (11) is arranged at the upper end of the double-layer glass kettle (4), and a liquid inlet and a liquid outlet are arranged on the side of the double-layer glass kettle (4), and the liquid inlet and the liquid outlet are connected to the high and low temperature integrated machine (6) through a liquid delivery pipe (5), and a discharge valve (13) is arranged at the bottom of the double-layer glass kettle (4); a constant pressure dropping funnel (1), a lid (9), a thermometer (8) and a gas release valve (10) are arranged on the glass kettle cover (11); The top of the stirring paddle (12) passes through the glass kettle cover (11) and is fixedly connected to the output shaft of the stirring motor (7), and the bottom paddle of the stirring paddle (12) extends into the double-layer glass kettle (4); the stirring motor (7) is fixedly installed in the middle of the top of the bracket (2) and is connected to the speed regulating box (3) by wiring.
2. The temperature-controllable concentrated sulfuric acid dilution device according to claim 1, characterized in that, The paddle of the stirring paddle is made of polytetrafluoroethylene material.
3. The temperature-controllable concentrated sulfuric acid dilution device according to claim 1, wherein, The surface of the paddle rod of the stirring paddle is provided with a polytetrafluoroethylene acid and alkali resistant coating.
4. The temperature-controllable concentrated sulfuric acid dilution device according to claim 1, wherein, The double-layer glass kettle and the glass kettle cover adopt a detachable ground joint connection structure.
5. The temperature-controllable concentrated sulfuric acid dilution device according to claim 1, characterized in that, The middle of the glass kettle cover is connected to the stirring paddle through a ceramic bearing.