Reaction kettle applied to sodium methoxide processing

Abstract

The utility model relates to the technical field of sodium methoxide processing, and discloses a reaction kettle applied to sodium methoxide processing. The buffer stock bin and other components are arranged to be matched, caustic soda flakes conveyed by the conveying device enter the buffer stock bin and then enter the reaction kettle body, and through the arrangement of the closing valve and the three-way valve, when discharging needs to be conducted on the reaction kettle body, the three-way valve disconnects the air inlet pipe and the discharging pipe, and therefore the discharging effect is improved. And the caustic soda flakes can directly fall into the reaction kettle through the blanking pipe without being influenced. After blanking is completed, the three-way valve is rotated to enable the gas inlet pipe to be communicated with the blanking pipe, at the moment, the middle of the gas inlet pipe is blocked, and gas in the reaction kettle body does not overflow into the buffer cavity any more; in the discharging process, gas overflowing in the buffer cavity is sucked into the tail gas absorption assembly under the action of the negative pressure fan to be absorbed, so that a series of problems caused by gas overflowing in the reaction kettle when caustic soda flakes are put into the reaction kettle are solved.

Description

Technical Field

[0001] This application relates to the field of sodium methoxide processing technology, and specifically to a reaction vessel used in sodium methoxide processing. Background Technology

[0002] Sodium methoxide, an organic compound with the chemical formula CH3ONa, is a hazardous chemical that is corrosive and flammable. It is mainly used in the pharmaceutical industry, as a condensing agent in organic synthesis, a chemical reagent, and a catalyst in edible oil processing. In current technology, the production of sodium methoxide requires the reactants to be passed into a reaction vessel for a chemical reaction. However, because the pipe used to add caustic soda flakes to the reaction vessel is a straight pipe, a large amount of gas from the reaction vessel overflows to the outside with each addition, causing environmental pollution and emitting a foul odor. Furthermore, adding too much caustic soda flakes at once can cause the reaction vessel to overheat, affecting product quality. Therefore, the addition of caustic soda flakes is done in batches, which also results in almost continuous gas overflow. On the other hand, the dust concentration at the work site is high during the preparation of caustic soda flakes, seriously affecting the occupational health of workers. Utility Model Content

[0003] In view of the above problems, this application provides a reaction vessel for sodium methoxide processing, which can effectively avoid a series of problems caused by gas overflow in the reaction vessel when caustic soda flakes are added to the reaction vessel.

[0004] According to one aspect of the embodiments of this application, a reaction vessel for processing sodium methoxide is provided. The reaction vessel for processing sodium methoxide includes a reaction vessel body, a temperature control jacket is provided on the outer periphery of the reaction vessel body, a first liquid delivery pipe, a second liquid delivery pipe and a discharge pipe are independently connected to the reaction vessel body, the discharge pipe is located at the top of the reaction vessel body, a buffer silo is connected to the top end of the discharge pipe away from the reaction vessel body, a conveying device is horizontally provided at the top of the buffer silo, a guide pipe is connected to the output end of the conveying device, the other end of the guide pipe passes downward through the buffer silo and extends into the discharge pipe, a sealing valve is provided at the guide pipe, the inner wall of the buffer silo and the outer wall of the guide pipe together form a buffer cavity, an air inlet pipe is connected to the discharge pipe through a three-way valve, an exhaust pipe is connected to the buffer cavity, the other end of the exhaust pipe is connected to a tail gas absorption assembly through a negative pressure fan, and the tail gas absorption assembly is fixed on a support frame.

[0005] In some embodiments, a PLC control box is included, the three-way valve is an electromagnetic three-way valve, the shut-off valve is an electromagnetic shut-off valve, and both the electromagnetic three-way valve and the electromagnetic shut-off valve are electrically connected to the PLC control box.

[0006] In some embodiments, a temperature sensing element and a pressure sensing element are included, both of which are electrically connected to the PLC control box.

[0007] The conveying device includes a feeding cylinder, which is connected to the buffer hopper. A spiral auger is installed inside the feeding cylinder, and the spiral auger is driven by a rotating motor.

[0008] In some embodiments, the exhaust gas absorption assembly includes a structural cylinder containing a plurality of sheet-like activated carbons. The plurality of sheet-like activated carbons are sequentially and alternately connected to the top and bottom of the structural cylinder so that the gas flow channel formed by the plurality of sheet-like activated carbons is Z-shaped, and an exhaust port is formed at the end of the structural cylinder.

[0009] In some embodiments, a filter sleeve is connected to the air intake pipe, and activated carbon, which is honeycomb activated carbon, is disposed inside the filter sleeve.

[0010] The beneficial effects of this application are as follows: By setting up a buffer silo and other components, the caustic soda flakes conveyed by the conveying device enter the buffer silo before entering the reactor body. Furthermore, through the setting of a sealing valve and a three-way valve, when it is necessary to feed material into the reactor body, the three-way valve disconnects the connection between the inlet pipe and the discharge pipe, allowing the caustic soda flakes to fall directly into the reactor body without being affected. After feeding is completed, rotating the three-way valve connects the inlet pipe and the discharge pipe, blocking the middle of the inlet pipe and preventing gas from overflowing into the buffer chamber from the reactor body. After turning on the negative pressure fan, the gas that overflowed into the buffer chamber during feeding will be drawn into the tail gas absorption assembly for absorption by the negative pressure fan, thus solving a series of problems caused by gas overflow from the reactor when caustic soda flakes are added to the reactor.

[0011] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0012] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of the reaction vessel used in the processing of sodium methoxide, provided in an embodiment of this application.

[0014] Figure 2 for Figure 1 Enlarged view at point A.

[0015] The reference numerals in the detailed embodiments are as follows:

[0016] A reaction vessel 100 used for sodium methoxide processing includes a reaction vessel body 110, a temperature control jacket 111, a first liquid delivery pipe 112, a second liquid delivery pipe 113, a discharge pipe 114, an air inlet pipe 114a, a three-way valve 114b, a filter screen sleeve 114c, activated carbon 114d, a buffer silo 120, a buffer chamber 121, an exhaust pipe 122, a conveying device 130, a spiral auger 131, a feeding cylinder 132, a rotating motor 133, a guide pipe 140, a sealing valve 141, a negative pressure fan 150, a tail gas absorption assembly 160, a structural cylinder 161, sheet activated carbon 162, and an exhaust port 163. Detailed Implementation

[0017] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.

[0018] For details, please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of the reaction vessel used in sodium methoxide processing, provided in an embodiment of this application. Figure 2 for Figure 1Enlarged view at point A. The reactor 100 used for sodium methoxide processing includes a reactor body 110, which is the reaction site. During operation, the reactor needs to be circulated into the reactor body 110 for reaction. As is well known in the art, the reactor should be equipped with a stirring device or similar equipment. A temperature control jacket 111 is provided on the outer periphery of the reactor body 110. The temperature control jacket 111 is used to control the temperature inside the reactor body 110. Specifically, during production, the temperature or flow rate of the heat transfer oil flowing into the temperature control jacket 111 can be controlled. A first liquid delivery pipe 112, a second liquid delivery pipe 113, and a feed pipe 114 are independently connected to the reactor body 110. The first liquid delivery pipe 112 and the second liquid delivery pipe 113 respectively add liquid reactants to the reactor body 110. The feed pipe 114 is used to introduce caustic soda flakes into the reactor body 110. The feed pipe 114 is located at the top of the reactor body 110. The end of the feed pipe 114 furthest from the reactor body 110 is connected to a buffer silo 120, which is used to temporarily store caustic soda flakes. A conveying device 130 is horizontally installed at the top of the buffer silo 120. The output end of the conveying device 130 is connected to a guide pipe 140. The other end of the guide pipe 140 extends downwards through the buffer silo 120 and into the feed pipe 114. During operation, the conveying device 130 conveys the caustic soda flakes to the guide pipe 140, and the caustic soda flakes enter the buffer chamber 121 through the guide pipe 140. A closing valve 141 is installed at the guide pipe 140. When the closing valve 141 is open, the caustic soda flakes at the conveying device 130 can enter the reactor body 110 through the guide pipe 140. The inner wall of the buffer hopper 120 and the outer wall of the guide pipe 140 together form a buffer chamber 121. An air inlet pipe 114a is connected to the discharge pipe 114 via a three-way valve 114b. An air extraction pipe 122 is connected to the buffer chamber 121. The other end of the air extraction pipe 122 is connected to the exhaust gas absorption assembly 160 via a negative pressure fan 150. The exhaust gas absorption assembly 160 is fixed on a support frame. When the three-way valve 114b connects the air inlet pipe 114a to the upper end of the discharge pipe 114, the negative pressure fan 150 can extract the gas in the buffer chamber 121 to the exhaust gas absorption assembly 160 for absorption treatment.

[0019] Specifically, the working process of this application is as follows: after the conveying device 130 conveys the caustic soda flakes to the feed pipe 140, the sealing valve 141 is opened. The conveying device 130 conveys the caustic soda flakes to the feed pipe 140 and then they fall into the buffer silo 120 and the reactor body 110 in sequence through the feed pipe 140. After one addition of raw materials is completed, the sealing valve 141 is closed. At the same time, the electromagnetic three-way valve 114b is reversed and connects the upper end of the exhaust pipe 122 and the feed pipe 114. At this time, the exhaust pipe 122 will be connected to the buffer silo 120 simultaneously. The gas overflowing from the reactor body 110 will be retained in the buffer chamber 121. At this time, the negative pressure fan 150 is turned on. The external air enters the buffer chamber 121 through the exhaust pipe 122 and is pumped by the negative pressure fan 150 to the tail gas absorption assembly 160 for treatment and absorption along with the residual tail gas in the buffer chamber 121.

[0020] As can be seen from the above, in this embodiment of the application, by setting up components such as the buffer silo 120, the caustic soda conveyed by the conveying device 130 enters the buffer silo 120 and then enters the reactor body 110. Furthermore, by setting up the shut-off valve 141 and the three-way valve 114b, when it is necessary to feed material into the reactor body 110, the three-way valve 114b disconnects the connection between the air inlet pipe 114a and the feed pipe 114, and the caustic soda can fall directly into the reactor through the feed pipe 114 without being affected. After the material feeding is completed, turn the three-way valve 114b to connect the air inlet pipe 114a with the material feeding pipe 114. At this time, the middle of the air inlet pipe 114a will be blocked, and the gas in the reactor body 110 will no longer overflow into the buffer chamber 121. After the negative pressure fan 150 is turned on, the gas that overflowed into the buffer chamber 121 during the feeding process will be drawn into the tail gas absorption component 160 for absorption under the action of the negative pressure fan 150, thereby solving a series of problems caused by the gas overflow in the reactor when caustic soda flakes are added to the reactor.

[0021] In some embodiments, a PLC control box is included, the three-way valve 114b is an electromagnetic three-way valve 114b, and the closing valve 141 is an electromagnetic closing valve 141. Both the electromagnetic three-way valve 114b and the electromagnetic closing valve 141 are electrically connected to the PLC control box. In this embodiment, through the above configuration, the PLC control box can directly control the opening and closing of the electromagnetic three-way valve 114b and the electromagnetic closing valve 141 within a preset time period, thereby effectively saving manpower and avoiding the risks caused by human error.

[0022] In some embodiments, a temperature sensing element and a pressure sensing element are included, both of which are electrically connected to the PLC control box. In this embodiment, with the above configuration, the PLC control box may include a display device, and the readings measured by the temperature and pressure sensing elements can be displayed on the display device of the PLC control box.

[0023] The conveying device 130 includes a feeding cylinder 132, which is connected to a buffer hopper 120. A spiral auger 131 is installed inside the feeding cylinder 132, and a rotating motor 133 is driven to the spiral auger 131. This application embodiment provides a specific configuration of the conveying device 130. During operation, the rotating motor 133 drives the spiral auger 131 to rotate, and the material is conveyed as the spiral auger 131 rotates. The entire conveying process is stable and efficient.

[0024] In some embodiments, the exhaust gas absorption assembly 160 includes a structural cylinder 161, within which a plurality of sheet-like activated carbon 162 are disposed. The plurality of sheet-like activated carbon 162 are sequentially and alternately connected to the top and bottom of the structural cylinder 161 such that the gas flow channel formed by the plurality of sheet-like activated carbon 162 is Z-shaped, and an exhaust port 163 is formed at the end of the structural cylinder 161. This application embodiment illustrates a specific configuration of the exhaust gas absorption assembly 160. During operation, when exhaust gas is transported into the structural cylinder 161, the exhaust gas passes through the gas flow channel formed by the sheet-like activated carbon 162 and is discharged through the exhaust port 163. During the flow of the exhaust gas through the gas flow channel, harmful substances can be adsorbed by the sheet-like activated carbon 162.

[0025] In some embodiments, an air intake pipe 114a is connected to a filter sleeve 114c, and activated carbon 114d, which is honeycomb activated carbon, is disposed inside the filter sleeve 114c. In this embodiment, by providing the filter sleeve 114c and activated carbon 114d, the gas drawn into the air intake pipe 114a is required to pass through the filter sleeve 114c and activated carbon 114d first, which can filter out impurities or particles in the air to the outside of the filter sleeve 114c, avoiding them from being sucked into the air intake pipe 114a and causing blockages.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A reaction vessel for processing sodium methoxide, characterized in that, The reactor body includes a temperature control jacket on its outer periphery, and a first infusion pipe, a second infusion pipe and a discharge pipe are independently connected to the reactor body. The feed pipe is located at the top of the reactor body. The top end of the feed pipe away from the reactor body is connected to a buffer silo. A conveying device is horizontally installed at the top of the buffer silo. The output end of the conveying device is connected to a guide pipe. The other end of the guide pipe passes through the buffer silo downward and extends into the feed pipe. A sealing valve is installed at the guide pipe. The inner wall of the buffer silo and the outer wall of the guide pipe together form a buffer cavity. An air inlet pipe is connected to the feed pipe via a three-way valve, and an air extraction pipe is connected to the buffer chamber. The other end of the air extraction pipe is connected to an exhaust gas absorption assembly via a negative pressure fan. The exhaust gas absorption assembly is fixed on the support frame.

2. The reaction vessel for sodium methoxide processing according to claim 1, characterized in that, The system includes a PLC control box, the three-way valve is an electromagnetic three-way valve, the shut-off valve is an electromagnetic shut-off valve, and both the electromagnetic three-way valve and the electromagnetic shut-off valve are electrically connected to the PLC control box.

3. The reaction vessel for sodium methoxide processing according to claim 2, characterized in that, It includes a temperature detection element and a pressure detection element, both of which are electrically connected to the PLC control box.

4. The reaction vessel for sodium methoxide processing according to claim 1, characterized in that... The conveying device includes a feeding cylinder, which is connected to the buffer hopper. A spiral auger is installed inside the feeding cylinder, and the spiral auger is driven by a rotating motor.

5. The reaction vessel for sodium methoxide processing according to claim 1, characterized in that, The exhaust gas absorption assembly includes a structural cylinder, inside which are arranged multiple sheet-like activated carbons. The multiple sheet-like activated carbons are sequentially and alternately connected to the top and bottom of the structural cylinder so that the gas flow channel formed by the multiple sheet-like activated carbons is Z-shaped, and an exhaust port is formed at the end of the structural cylinder.

6. The reaction vessel for sodium methoxide processing according to claim 1, characterized in that, The air intake pipe is connected to a filter screen sleeve, and activated carbon, which is honeycomb activated carbon, is placed inside the filter screen sleeve.

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