Potassium tert-butoxide preparation reaction kettle convenient for gas collection

Abstract

The present invention relates to the technical field of reaction kettles, particularly to a potassium tert-butoxide preparation reaction kettle convenient for gas collection, the potassium tert-butoxide preparation reaction kettle comprises a kettle body, the top of the kettle body is provided with a seal head, the seal head is provided with a first absorption mechanism, and the first absorption mechanism makes gas discharged from the kettle body fully contact with an absorption liquid for multiple times so as to achieve absorption of effective components in the gas; a second absorption mechanism is detachably mounted at the top of the first absorption mechanism in a sealed manner, the second absorption mechanism comprises a stock bin, and solid adsorption particles are contained in the stock bin and used for carrying out secondary effective component absorption on residual gas subjected to absorption treatment by the first absorption mechanism. Effective components in the tail gas are sequentially recycled in a multi-layer and classified tail gas absorption mode, and the problems that the tail gas generated in the potassium tert-butoxide preparation process is difficult to treat and inconvenient to recycle are solved.

Description

Technical Field

[0001] The invention relates to the technical field of reactors, in particular to a potassium tert-butoxide preparation reactor which is convenient for gas collection. Background Art

[0002] Potassium tert-butoxide plays an important catalytic role in organic synthesis in chemical industry, medicine, pesticide, etc. due to its strong alkalinity. It is widely used in condensation, rearrangement, ring opening and other reactions and is an indispensable catalyst in these reactions.

[0003] In industry, the metal method and the alkali method are generally used to prepare potassium tert-butoxide. The metal method is to react metallic potassium with excess tert-butanol under nitrogen protection, and the alkali method is to react tert-butanol with potassium hydroxide. Since the potassium hydroxide solution in the alkali method is easy to cause the hydrolysis of the product potassium tert-butoxide, in order to ensure product quality, the metal method is often used in industry to prepare potassium tert-butoxide.

[0004] In the process of preparing potassium tert-butoxide by metal method, since the reaction needs to be completed under nitrogen protection atmosphere, it is generally necessary to collect the tail gas to achieve the effect of recycling, thereby reducing production costs. However, in actual production, the volatilization of excess tert-butanol reactant during the reaction makes the tail gas contain gaseous tert-butanol, so it is necessary to distinguish and treat the tail gas to achieve the effect of classified recycling. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a potassium tert-butoxide preparation reactor that is convenient for gas collection, and the effective components in the tail gas are recovered in sequence by adopting a multi-level and classified tail gas absorption method, thereby solving the problems of difficult tail gas treatment and inconvenient recycling. It is specifically achieved by the following technical solutions: The invention discloses a potassium tert-butoxide preparation reaction kettle which is convenient for gas collection. The reaction kettle comprises a kettle body, a sealing head is installed on the top of the kettle body, a plurality of feed pipes are fixedly connected to the side of the kettle body, a discharge valve is installed at the bottom of the kettle body, a motor is installed on the top of the sealing head through a mounting sleeve, and the motor is drivingly connected to a plurality of stirring paddles arranged inside the kettle body.

[0006] The end cap is provided with a first absorption mechanism, which includes an absorption bin, which is fixed to the end cap. The absorption bin contains absorption liquid. A diverter ring is provided at the bottom of the annular space formed by the end cap and the absorption bin. A plurality of air holes are provided on the diverter ring. The bottom of the diverter ring is sealed and connected to the top of the end cap via a plurality of air pipes. The absorption bin is fixed to an annular top plate. An annular gap is formed between the annular top plate and the end cap.

[0007] The top seal of the absorption bin is detachably installed with a second absorption mechanism, the second absorption mechanism includes a silo, solid adsorption particles are contained inside the silo, the silo is fixed to a sealing cylinder, the sealing sleeve of the sealing cylinder is arranged outside the mounting sleeve, a ventilation sieve hole is installed at the bottom of the silo, and the top of the silo is fixed to an exhaust pipe.

[0008] Preferably, the first absorption mechanism further comprises a first liquid level sensor installed on the top of the absorption bin, and a second liquid level sensor is installed above the side of the annular top plate close to the mounting sleeve.

[0009] A first baffle plate arranged radially along one side of the absorption bin is fixed thereto, a first end of the first baffle plate completely blocks the annular channel of the absorption bin, and a second end of the first baffle plate passes through the annular top plate and is fixed to the mounting sleeve.

[0010] The first solenoid valve and the second solenoid valve are respectively installed on the side surfaces of the absorption bin. The first solenoid valve and the second solenoid valve are arranged close to the first baffle and distributed on both sides of the first baffle.

[0011] Preferably, an annular through hole is coaxially opened on the top of the silo, and a sealing ring is installed on the top of the silo, and the sealing ring can completely seal the annular through hole.

[0012] A second baffle is fixed radially on one side of the interior of the silo, and the ventilation screen holes and the exhaust pipe are arranged close to the second baffle and distributed on both sides of the second baffle.

[0013] Preferably, the contour shape of the gas pipe is an upwardly curved arc, the first end of the gas pipe is fixedly connected to the bottom of the diverter ring, and the second end of the gas pipe passes through the mounting sleeve and is connected to the top of the head.

[0014] Preferably, a pressure gauge and a thermometer are installed on the side of the kettle body, and the probes of the pressure gauge and the thermometer pass through the side wall of the kettle body and are arranged inside the kettle body; A plurality of mounting brackets are also fixed on the side of the kettle body.

[0015] Preferably, the outline shape of the silo is an inverted dish shape, and the silo is a shell structure.

[0016] Preferably, the cross-section of the annular top plate is an arc-shaped structure, and is coaxially arranged with the absorption bin.

[0017] Preferably, a portion of the first baffle between the annular top plate and the mounting sleeve is higher than an inner edge of the annular top plate.

[0018] Preferably, a plurality of handles are evenly and fixedly mounted on the upper surface of the silo along its circumference.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are: 1. Through the combination of liquid absorption and solid absorption, the effective components in the gas can be thoroughly absorbed, and part of the absorbed gas can be recycled to avoid waste of raw materials and reduce production costs.

[0020] 2. During the liquid absorption process, the gas and the absorption liquid are fully contacted and mixed multiple times, thereby improving the absorption of the effective components in the gas by the absorption liquid and improving the recovery efficiency of the effective components in the gas.

[0021] 3. During the solid absorption process, by controlling the direction of the airflow, the gas and solid adsorption particles are fully contacted to promote the absorption of effective components in the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A three-dimensional view of the potassium tert-butoxide preparation reactor for easy gas collection; Figure 2 A forward cross-sectional view of a potassium tert-butoxide preparation reactor for easy gas collection; Figure 3 for Figure 2 A partial enlarged view of the middle A area; Figure 4 for Figure 1 Partial disassembly diagram; Figure 5 for Figure 4 Cross-sectional view of some parts in the middle; Figure 6 for Figure 4 Schematic diagram of partial cutaway of some parts in the figure.

[0024] Description of reference numerals: 101- kettle body, 102- head, 103- feed pipe, 104- pressure gauge, 105- thermometer, 106- mounting bracket, 107- discharge valve, 108- mounting sleeve, 109- motor, 110- stirring paddle; 200-first absorption mechanism, 201-absorption chamber, 202-diverter ring, 203-air hole, 204-air delivery pipe, 205-annular top plate, 206-first liquid level sensor, 207-second liquid level sensor, 208-first baffle, 209-first solenoid valve, 210-second solenoid valve; 300 - second absorption mechanism, 301 - silo, 302 - sealing cylinder, 303 - annular through hole, 304 - sealing ring, 305 - second baffle, 306 - ventilation sieve hole, 307 - exhaust pipe, 308 - handle. DETAILED DESCRIPTION

[0025] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0026] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation, connection" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] The embodiment of the present invention provides a potassium tert-butoxide preparation reactor which is convenient for gas collection, see Figure 1 to Figure 6 The reactor comprises a reactor body 101, and a head 102 is fixedly installed on the top of the reactor body 101 by bolt fastening, so that the interiors of the reactor body 101 and the head 102 are connected, and are used together in the reaction preparation process of potassium tert-butoxide.

[0028] The side of the kettle body 101 is fixedly connected with a plurality of feed pipes 103 for conveying reactants such as metallic potassium and tert-butyl alcohol into the kettle body 101. A pressure gauge 104 and a thermometer 105 are also fixedly installed on the side of the kettle body 101. The probes of the pressure gauge 104 and the thermometer 105 pass through the side wall of the kettle body 101 and are arranged inside the kettle body 101, respectively, for detecting the pressure and temperature in the kettle body 101, so as to facilitate the parameter adjustment during the potassium tert-butyl alcohol reaction.

[0029] A plurality of mounting brackets 106 are evenly fixed to the side of the kettle body 101 along its circumference for mounting and fixing the kettle body 101. A discharge valve 107 is fixedly installed at the bottom of the kettle body 101. The discharge valve 107 is connected to the inside of the kettle body 101 and is used for discharging reactants or products in the kettle body 101. The top of the head 102 is coaxially fixed to the first end of the mounting sleeve 108. A motor 109 is fixedly installed on the second end of the mounting sleeve 108. The output end of the motor 109 is coaxially fixed to the drive shaft. The drive shaft passes through the mounting sleeve 108 in a sealed manner and is fixedly connected to a plurality of stirring paddles 110 arranged inside the kettle body 101.

[0030] During the preparation of potassium tert-butoxide, the motor 109 drives a plurality of stirring paddles 110 through the driving shaft to stir the reactants in the kettle 101 so that the reactants can fully contact each other, thereby promoting efficient reaction.

[0031] For further explanation of the embodiments of the present invention, see Figure 2 , Figure 3 A first absorption mechanism 200 is fixedly installed on the outer surface of the head 102. The first absorption mechanism 200 includes an absorption bin 201. The absorption bin 201 is fixedly connected to the outer surface of the head 102. The absorption bin 201 is arranged in an annular manner and is coaxially configured with the head 102. The annular space formed by the absorption bin 201 and the head 102 is used to hold absorption liquid for absorbing exhaust gas.

[0032] A diverter ring 202 is fixedly installed at the bottom of the annular space formed by the end cap 102 and the absorption bin 201. A plurality of air holes 203 are evenly opened on the upper surface of the diverter ring 202 along its circumference. The plurality of air holes 203 connect the diverter ring 202 and the absorption bin 201. The bottom of the diverter ring 202 is fixed and connected to the first ends of a plurality of gas pipes 204. The gas pipes 204 pass through the mounting sleeve 108 and are connected to the top of the end cap 102, so that the gas in the end cap 102 can be transported to the bottom of the diverter ring 202 through the gas pipe 204 and discharged evenly outward through the plurality of air holes 203. In this process, the gas is fully mixed with the absorption liquid in the absorption bin 201, and some components in the gas are absorbed for the first time.

[0033] Among them, the contour shape of the gas pipe 204 is an upwardly curved arc, so that the gas in the head 102 passes through the gas pipe 204 first upward and then downward into the bottom of the diverter ring 202, avoiding the absorption liquid in the absorption bin 201 to flow back into the kettle body 101 through the gas pipe 204.

[0034] Of course, those skilled in the art can prevent the absorption liquid in the absorption bin 201 from flowing back into the kettle body 101 through the gas pipe 204 by installing a one-way valve inside the gas pipe 204 .

[0035] In addition, an annular top plate 205 is fixedly installed on the top of the absorption bin 201. The cross-section of the annular top plate 205 is an arc-shaped structure and is coaxially arranged with the absorption bin 201. The outer side of the annular top plate 205 is sealed and fixed to the top of the absorption bin 201, and the inner side of the annular top plate 205 forms an annular gap with the outer surface of the head 102.

[0036] In the above structure, the annular top plate 205 and the absorption bin 201 form an annular arc top at the top of the diverter ring 202, and the annular arc top can store exhaust gas. When the gas in the head 102 is transported to the bottom of the diverter ring 202 through the gas pipe 204, it is evenly distributed at the bottom of the absorption bin 201 through the air holes 203, and makes the first contact with the absorption liquid contained at the bottom of the absorption bin 201, thereby realizing partial absorption of the gas.

[0037] After passing through the absorption liquid, the remaining gas gathers upward in the annular arc top to form a closed air chamber. As the gas gathers, under the action of gas pressure, the liquid level of the absorption liquid in the absorption bin 201 will gradually decrease until the liquid level is lower than the inner edge of the annular top plate 205. The gas in the annular arc top can flow out through the gap between the inner edge of the annular top plate 205 and the head 102, and come into secondary contact with the absorption liquid distributed between the annular top plate 205 and the installation sleeve 108, thereby further achieving absorption.

[0038] In addition, when the gas gathers in the closed gas chamber, the absorption liquid will also absorb the effective components in the gas, further improving the absorption efficiency of the exhaust gas.

[0039] Through two full contacts between the tail gas and the absorption liquid, the effective components in the gas can be absorbed to the greatest extent, thereby improving the efficiency of tail gas absorption.

[0040] For further explanation of this embodiment, see Figure 3 , Figure 4 , Figure 5 The first absorption mechanism 200 also includes a first liquid level sensor 206 installed on the top of the absorption bin 201 . The probe of the first liquid level sensor 206 is sealed and passes through the top of the absorption bin 201 , so as to monitor the liquid level in the absorption bin 201 in real time.

[0041] A second liquid level sensor 207 is provided above one side of the annular top plate 205 close to the mounting sleeve 108 . The second liquid level sensor 207 is installed on the outer side of the mounting sleeve 108 for real-time monitoring of the liquid level of the absorption liquid between the annular top plate 205 and the mounting sleeve 108 .

[0042] A first baffle plate 208 radially arranged along the head 102 is fixedly installed on one side of the absorption bin 201. One side of the first baffle plate 208 is sealed in the absorption bin 201 to block the annular circulation of the absorption liquid in the absorption bin 201. The other side of the first baffle plate 208 passes through the annular top plate 205 and is fixedly connected to the outer surface of the mounting sleeve 108, and the portion of the first baffle plate 208 between the annular top plate 205 and the mounting sleeve 108 is higher than the inner edge of the annular top plate 205.

[0043] The first solenoid valve 209 and the second solenoid valve 210 are respectively installed on the sides of the absorption bin 201. The first solenoid valve 209 and the second solenoid valve 210 are arranged close to the first baffle 208 and distributed on both sides of the first baffle 208. The first solenoid valve 209 is used to transport the absorption liquid into the absorption bin 201, and the second solenoid valve 210 is used to discharge the absorption liquid in the absorption bin 201 to the outside.

[0044] In the above embodiment, first, the first solenoid valve 209 transports the absorption liquid to the absorption bin 201, and the liquid level is higher than the inner edge of the annular top plate 205, thereby forming a closed air chamber at the top of the absorption bin 201 and the annular top plate 205. When the gas in the head 102 is transported to the bottom of the diverter ring 202 through the gas pipe 204, it first passes through the air hole 203 to mix and contact with the absorption liquid in the absorption bin 201 for the first time, and then gathers in the closed air chamber formed by the absorption bin 201 and the top of the annular top plate 205. With the further accumulation and absorption of the gas in the closed air chamber, the liquid level inside the absorption bin 201 will rise or fall. Since the absorption liquid on both sides of the annular top plate 205 is connected through the gap between the annular top plate 205 and the head 102, the rise or fall of the liquid level inside the absorption bin 201 will synchronously affect the liquid level between the annular top plate 205 and the installation sleeve 108.

[0045] When the liquid level of the absorption liquid in the absorption bin 201 is higher than the liquid level of the absorption liquid between the annular top plate 205 and the installation sleeve 108, it means that the total amount of the absorption liquid is small. At this time, the first solenoid valve 209 is adjusted to a larger value, and the second solenoid valve 210 is adjusted to a smaller value to ensure that there is sufficient absorption liquid for gas absorption until the liquid level of the absorption liquid in the absorption bin 201 is equal to the liquid level of the absorption liquid between the annular top plate 205 and the installation sleeve 108.

[0046] In addition, in order to maintain the unidirectional flow of the absorption liquid, the liquid level of the absorption liquid between the annular top plate 205 and the mounting sleeve 108 should be lower than the top of the first baffle 208. At the same time, in order to achieve the above-mentioned functions, the liquid level of the absorption liquid in the absorption bin 201 and the liquid level of the absorption liquid between the annular top plate 205 and the mounting sleeve 108 should be higher than the inner edge of the annular top plate 205. Therefore, when the liquid level measured by the second liquid level sensor 207 is close to the upper end surface of the first baffle 208, the second solenoid valve 210 is increased and the first solenoid valve 209 is decreased. When the liquid level measured by the second liquid level sensor 207 is close to the inner edge of the annular top plate 205, the first solenoid valve 209 is increased and the second solenoid valve 210 is decreased.

[0047] As a further embodiment of the present invention, see Figure 4 , Figure 6 A second absorption mechanism 300 is detachably installed on the top of the absorption bin 201. The second absorption mechanism 300 includes a silo 301. The outline shape of the silo 301 is an inverted dish shape. The silo 301 is a shell structure. Solid adsorption particles are contained inside the silo 301. The silo 301 can be sealed and overlapped on the upper surface of the absorption bin 201. The silo 301 is coaxially sealed and fixed with a sealing cylinder 302. The sealing cylinder 302 can be sealingly sleeved on the outer surface of the mounting sleeve 108.

[0048] An annular through hole 303 is coaxially opened on the top of the silo 301 for connecting the inside and outside of the silo 301 to facilitate the replacement of solid adsorption particles in the silo 301 . A sealing ring 304 is detachably installed on the top of the silo 301 , and the sealing ring 304 can completely seal the annular through hole 303 .

[0049] A second baffle plate 305 is fixedly installed along the radial direction of one side of the interior of the silo 301 in a sealed manner, and a ventilation sieve hole 306 is fixedly installed at the bottom of the silo 301 close to the second baffle plate 305. The ventilation sieve hole 306 connects the interior of the silo 301 with the space between the annular top plate 205 and the mounting sleeve 108, so that the residual gas after secondary contact absorption enters the space between the annular top plate 205 and the mounting sleeve 108, and then enters the interior of the silo 301 through the ventilation sieve hole 306, and contacts with the solid adsorption particles inside the silo 301, thereby achieving further absorption of the effective components in the gas.

[0050] The top of the silo 301 on the side close to the second baffle 305 is fixedly connected to an exhaust pipe 307, and the exhaust pipe 307 is used to discharge the remaining gas.

[0051] A plurality of handles 308 are evenly and fixedly mounted on the upper surface of the silo 301 along its circumference, so as to facilitate the installation and removal of the silo 301 .

[0052] Through the above structure, this embodiment allows the remaining gas that enters the silo 301 through the ventilation sieve hole 306 to flow in one direction, and fully contact the solid adsorption particles inside the silo 301 to achieve the third absorption of effective gas. The gas that circulates around the silo 301 is finally discharged to the outside through the exhaust pipe 307.

[0053] By disassembling the sealing ring 304, the solid adsorption particles inside the silo 301 can be replaced, thereby ensuring the gas absorption effect. In addition, by disassembling and replacing several groups of second absorption mechanisms 300, it is beneficial to ensure the continuous operation of the reactor and avoid affecting the work efficiency.

[0054] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to the only specific embodiments. Obviously, based on the above description, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A potassium tert-butoxide preparation reactor convenient for gas collection, characterized in that: The kettle body (101) comprises a kettle body (101), a sealing head (102) is installed on the top of the kettle body (101), a plurality of feed pipes (103) are fixedly connected to the side of the kettle body (101), a discharge valve (107) is installed at the bottom of the kettle body (101), a motor (109) is installed on the top of the sealing head (102) via a mounting sleeve (108), and the motor (109) is drivingly connected to a plurality of stirring paddles (110) arranged inside the kettle body (101); The end cap (102) is provided with a first absorption mechanism (200), the first absorption mechanism (200) comprising an absorption chamber (201), the absorption chamber (201) being fixed to the end cap (102), the absorption chamber (201) containing absorption liquid, a flow divider ring (202) being provided at the bottom of the annular space formed by the end cap (102) and the absorption chamber (201), a plurality of air holes (203) being provided on the flow divider ring (202), the bottom of the flow divider ring (202) being sealedly connected to the top of the end cap (102) via a plurality of air delivery pipes (204), the absorption chamber (201) being fixed to an annular top plate (205), and an annular gap being formed between the annular top plate (205) and the end cap (102); The top of the absorption bin (201) is sealed and detachably mounted with a second absorption mechanism (300), the second absorption mechanism (300) comprising a bin (301), the inside of the bin (301) containing solid adsorption particles, the bin (301) being fixed to a sealing cylinder (302), the sealing sleeve of the sealing cylinder (302) being arranged outside the mounting sleeve (108), a ventilation sieve hole (306) being mounted at the bottom of the bin (301), and the top of the bin (301) being fixed to an exhaust pipe (307).

2. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 1, characterized in that: The first absorption mechanism (200) further comprises a first liquid level sensor (206) installed on the top of the absorption bin (201), and a second liquid level sensor (207) is installed above the side of the annular top plate (205) close to the installation sleeve (108); A first baffle (208) arranged radially along one side of the absorption bin (201) is fixed thereto, a first end of the first baffle (208) completely blocking the annular channel of the absorption bin (201), and a second end of the first baffle (208) passing through the annular top plate (205) and fixed to the mounting sleeve (108); A first solenoid valve (209) and a second solenoid valve (210) are respectively installed on the side of the absorption bin (201); the first solenoid valve (209) and the second solenoid valve (210) are arranged close to the first baffle (208) and are distributed on both sides of the first baffle (208).

3. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 1, characterized in that: An annular through hole (303) is coaxially opened on the top of the silo (301), and a sealing ring (304) is installed on the top of the silo (301), and the sealing ring (304) can completely seal the annular through hole (303); A second baffle (305) is fixed radially on one side inside the silo (301), and the ventilation sieve holes (306) and the exhaust pipe (307) are arranged close to the second baffle (305) and distributed on both sides of the second baffle (305).

4. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 1, characterized in that: The gas delivery pipe (204) has an outline shape that is curved upward, a first end of the gas delivery pipe (204) is fixedly connected to the bottom of the flow dividing ring (202), and a second end of the gas delivery pipe (204) passes through the installation sleeve (108) and is connected to the top of the sealing head (102).

5. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 1, characterized in that: A pressure gauge (104) and a thermometer (105) are installed on the side of the kettle body (101); probes of the pressure gauge (104) and the thermometer (105) pass through the side wall of the kettle body (101) and are arranged inside the kettle body (101); A plurality of mounting brackets (106) are also fixed to the side of the kettle body (101).

6. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 3, characterized in that: The outline shape of the material bin (301) is an inverted disc shape, and the material bin (301) is a shell structure.

7. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 2, characterized in that: The cross section of the annular top plate (205) is an arc-shaped structure, and is coaxially arranged with the absorption bin (201).

8. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 2, characterized in that: A portion of the first baffle (208) between the annular top plate (205) and the mounting sleeve (108) is higher than the inner edge of the annular top plate (205).

9. The potassium tert-butoxide preparation reaction kettle convenient for gas collection according to claim 6, characterized in that: A plurality of handles (308) are evenly and fixedly mounted on the upper surface of the material bin (301) along its circumference.

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