Solvent-free low-pressure gasification reaction device

Abstract

The utility model relates to a solvent-free low-pressure gasification reaction device which comprises a reactor, a condenser, a four-way pipe, a collector and two raw material bottles, the four-way pipe is provided with an upper end connector, a left side connector, a right side connector and a lower end connector, the left side connector and the right side connector of the four-way pipe are correspondingly connected with the two raw material bottles through the connecting pipes respectively, the lower end connector of the four-way pipe is connected with the collector, the collector is used for collecting products, and the upper end connector of the four-way pipe is connected with a lower port of the reactor; the upper port of the reactor is connected with the lower port of the condenser; the two raw material bottles are respectively arranged on the corresponding magnetic stirring heaters; the reactor is connected with a constant-temperature circulating device, and the constant-temperature circulating device is used for providing the temperature required by the reaction for the gas-phase reactant. The reaction kettle is simple in structure and convenient to use, reactants can be mixed in a gaseous form, and solvents are prevented from participating in the reaction process.

Description

Technical Field

[0001] This utility model relates to the field of experimental instrument technology, specifically to a solvent-free low-pressure gasification reaction device. Background Technology

[0002] Gas-phase reactions are a common reaction method in both industry and laboratories. Currently, gas-phase reaction apparatus is generally industrial-grade, with fewer reports on laboratory gas-phase apparatus. In current experimental procedures, reaction products often cannot be removed from the reaction system in a timely manner, especially for reversible equilibrium reactions, where the inability to remove products promptly hinders the forward reaction. Furthermore, reactions generally require solvents, and the most common organic solvents, such as ethanol, acetone, and chloroform, are flammable and inhalable, placing high demands on experimental safety and the technical sophistication of the operating procedures. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a solvent-free, low-pressure gasification reaction device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A solvent-free low-pressure gasification reaction apparatus, comprising a reactor, a condenser, a four-way pipe, a collector, and two raw material bottles;

[0006] The four-way pipe has an upper end interface, a left end interface, a right end interface, and a lower end interface. The left end interface and the right end interface of the four-way pipe are respectively connected to two raw material bottles through connecting pipes. The lower end interface of the four-way pipe is connected to a collector for collecting products. The upper end interface of the four-way pipe is connected to the lower port of the reactor. The upper port of the reactor is connected to the lower port of the condenser.

[0007] The two raw material bottles are respectively placed on the corresponding magnetic stirring heaters;

[0008] The reactor is connected to a constant temperature circulation device, which is used to provide the required temperature for the gaseous reactants to react.

[0009] Furthermore, the condenser is a serpentine, spherical, or straight condenser tube.

[0010] Furthermore, the upper port of the condenser is connected to a pressure reducing system.

[0011] Furthermore, the pressure reduction system includes a vacuum gauge and a vacuum pump.

[0012] Furthermore, the reactor is a serpentine, spherical, or straight condenser tube connected to a constant temperature circulation device.

[0013] Furthermore, the constant temperature circulation device can adjust the temperature.

[0014] Furthermore, the collector and the two raw material bottles are both round-bottom flasks.

[0015] Furthermore, the connecting pipe is a 120-degree bend, and the angles between the left and right interfaces of the four-way pipe and the lower interface are 60 degrees respectively.

[0016] The present invention adopts the above technical solution and has the following beneficial effects:

[0017] This novel device is simple and practical. It uses magnetic heating to induce a reaction of reactants in a gaseous state. The reactor provides the necessary temperature for the reaction, and the products are condensed and refluxed into a collector by a condenser. It is easy to use and allows for the mixing of reactants in a gaseous state, avoiding the involvement of solvents in the reaction process. It also offers the following advantages: 1. If the boiling point of the product is higher than that of the reactants, the product can be continuously separated from the reaction system, increasing the degree of reaction; 2. Avoiding the use of solvents aligns better with the requirements of green chemistry, and post-processing is easier; 3. This device can also purify the reaction raw materials through evaporation or sublimation using a magnetic stirring heater, achieving integrated purification and preparation operations. Attached Figure Description

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0020] like Figure 1 As shown, this utility model discloses a solvent-free low-pressure gasification reaction device, comprising a reactor 9, a condenser 10, a four-way pipe 8, a collector 5, and two reaction raw material bottles 3 and 4.

[0021] The four-way pipe 8 has an upper end interface, a left end interface, a right end interface, and a lower end interface. The left end interface and the right end interface of the four-way pipe 8 are respectively connected to the two reaction raw material bottles 3 and 4 through connecting pipes 6 and 7. The lower end interface of the four-way pipe 8 is connected to the collector 5, which is used to collect the product. The upper end interface of the four-way pipe 8 is connected to the lower port of the reactor 9. The upper port of the reactor 9 is connected to the lower port of the condenser 10.

[0022] Two reaction raw material bottles 3 and 4 are respectively placed on the corresponding magnetic stirrers 1 and 2 to prevent boiling over;

[0023] The reactor 9 is connected to a constant temperature circulation device 12, which is used to provide the required temperature for the gaseous reactants.

[0024] Among them, collector 5 and the two raw material bottles 3 and 4 are round-bottom flasks. Connecting pipes 6 and 7 are 120-degree bends, and the angles between the left and right interfaces of the four-way pipe 8 and the lower interface are 60 degrees respectively.

[0025] The coolant flowing through condenser 10 is tap water, ice-salt water, low-temperature ethanol, or other coolants. Condenser 10 can be a serpentine, spherical, or straight condenser tube. In this embodiment, condenser 10 is a serpentine condenser tube, and the upper end of the inner core tube of condenser 10 is connected to a pressure-reducing system 11. Since boiling point is related to gas pressure, reducing the gas pressure can lower the temperature at which reactants vaporize. This pressure-reducing system is used to evaporate and sublimate thermally unstable compounds.

[0026] As one embodiment, the pressure reduction system 11 includes a vacuum pump 111 and a vacuum gauge 112, both of which are existing products.

[0027] Reactor 9 is a serpentine, spherical, or straight condenser tube connected to the constant-temperature circulation device 12. In this embodiment, reactor 9 is a serpentine condenser tube, with the lower end of the inner core tube of reactor 9 connected to the upper end interface of the four-way pipe 8, and the upper end of the inner core tube of reactor 9 connected to the lower end of the inner core tube of condenser 10. The outer casing of reactor 9 is connected to the constant-temperature circulation device 12. The constant-temperature circulation device 12 provides the required temperature for the gaseous reactants, and the constant-temperature circulation device 12 is a conventional product.

[0028] The pressure reduction system regulates the system pressure, which affects the vaporization temperature of the reactants, and this method can be used to improve the vaporization range of reactants suitable for this device.

[0029] The specific working method of this utility model is as follows:

[0030] The first step is to place the reactants into the raw material bottles 3 and 4 at the bottom, and then place the raw material bottles 3 and 4 on the magnetic stirrers 1 and 2.

[0031] The second step is to connect the connecting pipes 6 and 7 to the left and right interfaces of the four-way pipe 8, and connect the lower interface of the four-way pipe 8 to the collector 5.

[0032] The third step is to install the reaction controller;

[0033] Step 4: Install the condenser 10;

[0034] Fifth step, install the vacuum pump 111, vacuum gauge 112, and constant temperature circulation device 12;

[0035] Step 6: Turn on the condenser and vacuum decompression equipment, set the reactant vaporization temperature and stirring speed to avoid boiling over, set the constant temperature circulation temperature, and carry out the reaction.

[0036] Step 7: After the reaction is complete, the connection between the vacuum pump 111 and the system should be disconnected before turning off the power to avoid backflow of vacuum pump oil. Then the experimental apparatus can be disassembled from top to bottom to obtain the product in collector 5.

[0037] The specific embodiments of this utility model have been described above. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A solvent-free, low-pressure gasification reaction apparatus, characterized in that: Reactor, condenser, four-way pipe, collector and two raw material bottles; The four-way pipe has an upper end interface, a left end interface, a right end interface, and a lower end interface. The left end interface and the right end interface of the four-way pipe are respectively connected to two raw material bottles through connecting pipes. The lower end interface of the four-way pipe is connected to a collector for collecting products. The upper end interface of the four-way pipe is connected to the lower port of the reactor. The upper port of the reactor is connected to the lower port of the condenser. The two raw material bottles are respectively placed on the corresponding magnetic stirring heaters; The reactor is connected to a constant temperature circulation device, which is used to provide the required temperature for the gaseous reactants to react.

2. The solvent-free low-pressure gasification reaction apparatus according to claim 1, characterized in that: The condenser is a serpentine, spherical, or straight condenser tube.

3. The solvent-free low-pressure gasification reaction apparatus according to claim 1, characterized in that: The upper port of the condenser is connected to a pressure reducing system.

4. The solvent-free low-pressure gasification reaction apparatus according to claim 3, characterized in that: The pressure reduction system includes a vacuum gauge and a vacuum pump.

5. The solvent-free low-pressure gasification reaction apparatus according to claim 1, characterized in that: The reactor is a serpentine, spherical, or straight condenser tube connected to a constant temperature circulation device.

6. A solvent-free low-pressure gasification reaction apparatus according to claim 1 or 5, characterized in that: The temperature-controlled circulation device can adjust the temperature.

7. The solvent-free low-pressure gasification reaction apparatus according to claim 1, characterized in that: The collector and the two raw material bottles are both round-bottom flasks.

8. The solvent-free low-pressure gasification reaction apparatus according to claim 1, characterized in that: The connecting pipe is a 120-degree bend, and the angles between the left and right interfaces of the four-way pipe and the lower interface are 60 degrees respectively.

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