Aluminum alkoxide production device

Abstract

The utility model discloses an aluminum alkoxide production device, which belongs to the technical field of chemical equipment, and comprises a reaction kettle, the reaction kettle is internally provided with a solid stock bin, and a bottom support wall adopts a grid net; the stock solution ingress pipe is connected into the reaction kettle from the lower part of the solid stock bin; the first liquid inlet assembly is arranged above the solid stock bin; the breather pipe penetrates through the solid stock bin from bottom to top; and the discharge pipe is connected with the first liquid inlet assembly and the second liquid inlet assembly through pipelines. According to the aluminum alkoxide production device provided by the utility model, organic alcohol and high-purity aluminum skimmings are separated in the reaction kettle through the solid stock bin, so that the contact area of solid and liquid reactants can be conveniently controlled; under the action of the circulating pump, the organic alcohol circulates in the reaction kettle, and the circulating flow is adjusted through the corresponding valve on the pipeline, so that the organic alcohol and the high-purity aluminum skimmings are subjected to contact reaction according to requirements, the synthesis reaction is controlled to be carried out uniformly and mildly, the blasting boiling phenomenon in the synthesis process is avoided, and the device has the advantages of simplicity in operation, safety and controllability.

Description

Technical Field

[0001] The utility model relates to an aluminum alkoxide production device, belonging to the technical field of chemical equipment. Background Art

[0002] Aluminum alkoxide has very strong water absorption and is widely used as a desiccant. Aluminum alkoxide decomposes into aluminum hydroxide when in contact with water, and aluminum oxide can be prepared after roasting, and the impurity content of the prepared aluminum oxide is low, so aluminum alkoxide has become the main raw material source for the production of aluminum oxide. Usually, aluminum alkoxide is prepared by reacting metallic aluminum with corresponding alcohol under the action of a catalyst. The process of aluminum and alcohol reacting to form aluminum alkoxide is exothermic. Existing aluminum alkoxide production devices, such as the patent with publication number CN206127169U, discloses a multifunctional continuous synthesis of aluminum isopropoxide device, which needs to stir the materials in the kettle during the reaction process, and needs cooling water to control the reaction speed during the reaction process, and the amount of cooling water required is large, and the reaction speed cannot be fundamentally controlled, and the operation safety of the device is low. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides an aluminum alkoxide production device, which allows organic alcohol and high-purity aluminum chips to contact and react as required, thereby controlling the synthesis reaction to proceed evenly and gently, avoiding boiling in the synthesis process, and has the advantages of simple operation, safety and controllability.

[0004] The utility model achieves the above-mentioned purpose by adopting the following technical solutions:

[0005] An aluminum alkoxide production device comprises a reactor, wherein a hand hole is arranged at the top of the reactor, a discharge pipe is arranged at the bottom of the reactor, and the reactor is provided with:

[0006] A solid silo, which is arranged in the middle of the reactor, and a grid is used as a bottom support wall of the solid silo;

[0007] A stock solution inlet pipe, the stock solution inlet pipe is connected to the reaction kettle from below the solid material bin;

[0008] A first liquid inlet component, wherein the first liquid inlet component is arranged above the solid material bin;

[0009] A vent pipe, wherein the vent pipe passes through the solid material bin from bottom to top, the lower end of the vent pipe is located below the solid material bin, and the upper end of the vent pipe is located above the solid material bin;

[0010] The raw liquid introduction pipe is connected to the raw liquid pipeline through a pipeline, and the discharge pipe is connected to the first liquid inlet component and the second liquid inlet component through a pipeline.

[0011] Optionally, a second liquid inlet component is further provided in the reactor, and the second liquid inlet component is arranged toward the bottom supporting wall of the solid silo.

[0012] Optionally, the aluminum alkoxide production device provided by the utility model further includes a condenser, which is used to cool and condense the gas discharged from the reaction kettle.

[0013] Optionally, the condenser is a vertical tube-and-tube condenser, the air inlet of the vertical tube-and-tube condenser is connected to the top opening of the reactor, and the top of the vertical tube-and-tube condenser is connected to the exhaust pipe.

[0014] Optionally, a liquid blocking cover is provided above the upper pipe opening of the vent pipe.

[0015] Optionally, the first liquid inlet assembly and the second liquid inlet assembly both include annular tubes, and liquid outlets are evenly arranged on the annular tubes.

[0016] Optionally, the lower outer portion of the reactor is covered with a jacket, and a heat-conducting medium is introduced into the interlayer of the jacket.

[0017] Optionally, a pressure relief vent is connected to the reactor at the bottom of the solid silo.

[0018] Optionally, a ground wire is connected to the reactor.

[0019] Optionally, an explosion-proof opening is provided on the upper portion of the reactor.

[0020] The beneficial effects of this application include but are not limited to:

[0021] The aluminum alkoxide production device provided by the utility model can separate organic alcohol and high-purity aluminum chips in a reaction kettle through a solid silo, so that the contact area of ​​solid-liquid reactants can be conveniently controlled; the organic alcohol is circulated in the reaction kettle under the action of a circulation pump, and the circulation flow rate is adjusted through a corresponding valve on a pipeline, so that the organic alcohol and the high-purity aluminum chips are contacted and reacted as required, so that the synthesis reaction is controlled to be carried out uniformly and gently, and the boiling phenomenon in the synthesis process is avoided, and the utility model has the advantages of simple operation, safety and controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 A schematic diagram of the structure of the aluminum alkoxide production device provided by the utility model;

[0024] In the figure, 100, reactor; 110, hand hole; 120, discharge pipe; 130, jacket; 140, pressure relief vent; 150, grounding wire; 160, explosion-proof vent; 200, solid silo; 210, grid; 310, first liquid inlet assembly; 320, second liquid inlet assembly; 400, raw liquid introduction pipe; 500, vent pipe; 510, liquid blocking hood; 600, raw liquid pipeline; 700, circulation pump; 710, filter; 800, condenser; 900, exhaust pipe. DETAILED DESCRIPTION

[0025] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0026] It should be noted that many specific details are described in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0027] like Figure 1 As shown in the figure, the aluminum alkoxide production device provided by the utility model includes a reactor 100, a hand hole 110 is provided on the upper part of the reactor 100, a discharge pipe 120 is provided at the bottom of the reactor 100, and a solid material bin 200, a first liquid inlet component 310, a raw liquid introduction pipe 400, a ventilation pipe 500, etc. are provided in the reactor 100.

[0028] Specifically, the solid material bin 200 is disposed in the middle of the reactor 100 , and the bottom support wall of the solid material bin 200 is a grid 210 .

[0029] The ventilation pipe 500 passes through the solid material bin 200 from bottom to top, the lower end of the ventilation pipe 500 is located below the solid material bin 200 , and the upper end of the ventilation pipe 500 is located above the solid material bin 200 .

[0030] The first liquid inlet assembly 310 is disposed above the solid silo 200 , and the raw liquid introduction pipe 400 is connected to the reactor 100 from below the solid silo 200 . The raw liquid introduction pipe 400 is connected to the raw liquid pipeline 600 through a pipeline.

[0031] In a preferred embodiment, a second liquid inlet assembly 320 is further disposed in the reactor 100 , and the second liquid inlet assembly 320 is disposed toward the bottom supporting wall of the solid silo 200 .

[0032] The discharge pipe 120 is connected to the first liquid inlet assembly 310 and the second liquid inlet assembly 320 through a pipeline and a circulation pump 700 .

[0033] In order to facilitate the control of the reaction and discharge process, two valves are usually provided on the discharge pipe 120 of the reactor 100, and the inlet pipe of the circulation pump 700 is connected between the two valves.

[0034] Furthermore, the aluminum alkoxide production device provided by the utility model also includes a condenser 800, and the condenser 800 is used to cool and condense the gas discharged from the reaction kettle 100.

[0035] Typically, the lower outer portion of the reactor 100 is covered with a jacket 130 , and heating oil is introduced into the interlayer of the jacket 130 as a heat transfer medium.

[0036] The aluminum alkoxide production device provided by the utility model has the following production process:

[0037] (1) Close the valve on the discharge pipe 120, open the corresponding valve on the stock solution pipeline 600, add the organic alcohol from the stock solution pipeline 600 and the stock solution introduction pipe 400 into the reactor 100, so that the organic alcohol in the reactor 100 reaches a certain liquid level; add high-purity aluminum chips into the solid material bin 200 of the reactor 100 through the hand hole 110 and add an appropriate amount of catalyst, and close the hand hole 110; in this way, the organic alcohol and the high-purity aluminum chips are separated in the reactor 100 through the solid material bin 200, which can conveniently control the contact area of ​​the solid and liquid reactants;

[0038] (2) Condensate is introduced into the condenser 800 and heating oil is introduced into the jacket 130;

[0039] (3) At the beginning of the reaction, the organic alcohol at the bottom of the reactor 100 is heated by heating oil to increase the temperature of the organic alcohol, which is conducive to the reaction. After the organic alcohol in the reactor 100 is heated to the boiling point of the alcohol, the corresponding valve on the discharge pipe 120 is opened, the corresponding valve on the pipeline connected to the first liquid inlet component 310 is opened, and the corresponding valve on the pipeline connected to the second liquid inlet component 320 is opened, and the circulation pump 700 is started. The material at the bottom of the reactor 100 is pumped out by the circulation pump 700 and then enters the reactor 100 from the top of the solid silo 200 and the bottom of the solid silo 200 to react with the high-purity aluminum chips to generate aluminum alkoxide. The generated aluminum alkoxide passes through the grid 210 at the bottom of the solid silo 200 and drips downward to the bottom of the reactor 100;

[0040] Under the action of the circulation pump 700, the organic alcohol circulates in the reactor 100, and the circulation flow rate can be adjusted by the corresponding valve on the pipeline, so that the organic alcohol and the high-purity aluminum chips can be contacted and reacted as required, avoiding the boiling phenomenon in the synthesis process and controlling the synthesis reaction to proceed uniformly;

[0041] After the reaction is uniformly carried out, the heating oil introduced into the jacket 130 is cut off;

[0042] During the reaction, the organic alcohol vapor generated in the reactor 100 is condensed and refluxed through the condenser 800, and the hydrogen generated by the reaction is discharged from the exhaust pipe 900 at the top of the condenser 800;

[0043] (4) After the reaction is completed, the circulation pump 700 and the corresponding valves are closed, and the generated aluminum alkoxide is temporarily stored in the reactor 100. Heating oil can also be introduced into the jacket 130 to keep the reactor 100 warm to prevent the aluminum alkoxide from solidifying. When unloading, the corresponding valve on the discharge pipe 120 is opened to discharge the material.

[0044] Generally, the organic alcohol added to the reactor 100 in the first step should be excessive to facilitate liquid circulation; a filter 710 is provided before the circulation pump 700 to filter the liquid.

[0045] The function of the vent pipe 500 is to connect the inner cavities of the reactor 100 above and below the solid silo 200, so as to balance the air pressure in the upper and lower parts of the reactor 100, and avoid potential safety hazards caused by increased air pressure in the lower part of the reactor 100 due to blockage of the grid at the bottom of the solid silo 200. Usually, a liquid shield 510 is provided above the upper pipe opening of the vent pipe 500 to prevent a large amount of liquid from pouring into the vent pipe 500.

[0046] In one specific embodiment, the condenser 800 is a vertical tube condenser, and the gas phase passes through the tube bundle. The air inlet of the vertical tube condenser is connected to the top opening of the reactor 100, and the top of the vertical tube condenser is connected to the exhaust pipe 900.

[0047] In one specific embodiment, the first liquid inlet assembly 310 and the second liquid inlet assembly 320 both include annular tubes, and liquid outlets are evenly opened on the annular tubes.

[0048] Furthermore, a pressure relief vent 140 is connected to the reactor 100 at the bottom of the solid silo 200. When the pressure at the bottom of the reactor 100 increases, the pressure relief vent 140 is used to release the pressure to prevent safety hazards caused by blockage of the ventilation pipe 500.

[0049] Furthermore, the reactor 100 is connected with a grounding wire 150 to prevent the organic alcohol vapor from flashing and exploding due to static electricity.

[0050] Furthermore, an explosion-proof opening 160 is provided on the upper portion of the reactor 100 , and an explosion-proof plate is installed on the explosion-proof opening 160 , and the pressure limit of the explosion-proof plate is less than the design safety limit of the reactor body 100 .

[0051] Typically, the reactor 100, solid silo 200, grid 210, ventilation pipe 500, condenser 800, exhaust pipe 900, circulation pump 700 and the pipes are made of 304 or higher stainless steel, and the jacket 130 and heating medium pipe are made of carbon steel.

[0052] It can be understood that instruments such as thermometers and pressure gauges are installed in various parts of the device as needed. For example, a pressure gauge and a thermometer are provided on the upper head of the vertical shell and tube condenser, and a thermometer is provided on the reactor 100. This makes it convenient to monitor the working conditions of various parts of the device and ensures that the synthesis process is safe and reliable.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] The above specific implementation manner cannot be used as a limitation on the protection scope of the utility model. For technicians in this technical field, any replacement, improvement or transformation made to the implementation manner of the utility model falls within the protection scope of the utility model.

[0055] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. An aluminum alkoxide production device, characterized in that: The reactor comprises a reactor, wherein a hand hole is arranged at the top of the reactor, a discharge pipe is arranged at the bottom of the reactor, and the reactor is provided with: A solid silo, which is arranged in the middle of the reactor, and a grid is used as a bottom support wall of the solid silo; A stock solution inlet pipe, the stock solution inlet pipe is connected to the reaction kettle from below the solid material bin; A first liquid inlet component, wherein the first liquid inlet component is arranged above the solid material bin; A vent pipe, wherein the vent pipe passes through the solid material bin from bottom to top, the lower end of the vent pipe is located below the solid material bin, and the upper end of the vent pipe is located above the solid material bin; The raw liquid introduction pipe is connected to the raw liquid pipeline through a pipeline, and the discharge pipe is connected to the first liquid inlet component and the second liquid inlet component through a pipeline.

2. The aluminum alkoxide production device according to claim 1, characterized in that: A second liquid inlet component is also arranged in the reactor, and the second liquid inlet component is arranged toward the bottom supporting wall of the solid material bin.

3. The aluminum alkoxide production device according to claim 1, characterized in that: It also includes a condenser, which is used to cool and condense the gas discharged from the reaction kettle.

4. The aluminum alkoxide production device according to claim 3, characterized in that: The condenser is a vertical tube condenser, the air inlet of the vertical tube condenser is connected to the top opening of the reactor, and the top of the vertical tube condenser is connected to the exhaust pipe.

5. The aluminum alkoxide production device according to claim 1, characterized in that: A liquid blocking cover is arranged above the upper pipe opening of the vent pipe.

6. The aluminum alkoxide production device according to claim 1, characterized in that: The first liquid inlet assembly and the second liquid inlet assembly both comprise annular tubes, and liquid outlets are evenly arranged on the annular tubes.

7. The aluminum alkoxide production device according to claim 1, characterized in that: The lower outer part of the reactor is covered with a jacket, and a heat-conducting medium is introduced into the interlayer of the jacket.

8. The aluminum alkoxide production device according to claim 1, characterized in that: The reactor at the lower part of the solid material silo is connected with a pressure release vent.

9. The aluminum alkoxide production device according to claim 1, characterized in that: The reactor is connected with a ground wire.

10. The aluminum alkoxide production device according to claim 1, characterized in that: An explosion-proof opening is arranged on the upper part of the reactor.

Images