An acetone distillation tower with purity measurement function

Abstract

The present invention discloses an acetone distillation tower with a purity measurement function, and relates to the technical field of acetone measurement. It comprises a distillation tower for preparing acetone; the distillation tower is provided with a plug-in notch for installing a measuring component at a position close to the top exhaust pipe; the measuring component comprises: a supporting dish for storing acetone mixed gas and a reagent that produces a colored reaction with acetone; a connecting plug tube is installed on the back of the supporting dish, the connecting plug tube is adapted to the plug-in notch, and is used to connect the supporting dish and the distillation tower, and the supporting dish is parallel to the distillation tower by means of the connecting plug tube. The present invention installs a measuring component for instantly and quickly detecting the purity of acetone by a colored reaction at a position close to the top exhaust pipe of the distillation tower, so that the measurement process is more intuitive. Compared with the traditional monitoring method with the help of sensors, it not only improves the detection efficiency, but also reduces the equipment cost and maintenance complexity.

Description

Technical Field

[0001] The invention relates to the technical field of acetone measurement, in particular to an acetone distillation tower with a purity measurement function. Background Art

[0002] Acetone, also known as dimethyl ketone, is an organic substance and an important organic solvent in industrial production. As an important organic solvent, the precise measurement and control of acetone's purity is directly related to the product quality and production efficiency.

[0003] After searching, the Chinese utility model patent with publication number "CN215084926U" discloses "an acetone distillation device". The application connects the acetone distillation device to a vacuum, and in the later stage of distillation, vacuum decompression is used to fully distill high-boiling point solvents such as benzene compounds, thereby reducing the accumulation of organic benzene in the target component acetone, and effectively improving the recovery efficiency and purity of acetone.

[0004] In addition, the Chinese utility model patent with publication number "CN213912388U" discloses "a crude acetylacetone distillation device". This application improves the practicability of the device by cooperating with each other through the setting of a heating device, a heating chamber, a heat pipe and a fan. When the fan draws the hot air in the heating chamber into the heat pipe, the heat pipe heats the outer wall of the flow pipe, thereby raising the temperature inside the flow pipe. This avoids the problem of gasified acetylacetone condensing into liquid and remaining in the flow pipe when the flow pipe is too long, thereby causing a waste of raw materials.

[0005] However, although the above-mentioned acetone distillation device has solved the problems of purity improvement and raw material waste to a certain extent, in actual industrial applications, the above-mentioned device generally uses sensors to monitor the real-time and rapid measurement of acetone purity, which has certain limitations, such as sensor sensitivity, response time and maintenance cost. Therefore, a new type of acetone distillation tower with purity measurement function is proposed. Summary of the invention

[0006] The object of the present invention is to provide an acetone distillation tower with a purity measurement function to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: an acetone distillation tower with a purity measurement function, comprising:

[0008] Distillation column, used to make acetone;

[0009] The distillation tower is provided with a plug-in notch for installing a measuring component at a position close to the top exhaust pipe;

[0010] The measuring assembly comprises:

[0011] A carrier dish, used for receiving acetone mixed gas and reagents that produce a colored reaction with acetone;

[0012] A connecting plug tube is installed on the back of the support dish, the connecting plug tube is matched with the plug-in notch and is used to connect the support dish and the distillation tower. The support dish is parallel to the distillation tower by means of the connecting plug tube;

[0013] A transparent protective cover is installed at the mouth of the carrier dish, and a reaction bottle connected to the inside of the carrier dish is installed at one end of the carrier dish, and the reaction bottle is used to store reagents;

[0014] A syringe for drawing the acetone mixed gas in the distillation tower into the carrier vessel along the connecting plug tube is installed on one side of the carrier vessel;

[0015] When the syringe performs the extraction stroke, the reagent and acetone mixed gas mix and are displayed through the transparent protective cover in the form of a colored reaction.

[0016] As a further preferred embodiment of the present technical solution, a through opening is opened on one side of the carrier, and a connecting frame is installed at the through opening of the carrier, and a long frame side of the connecting frame is parallel to a long plate side of the carrier;

[0017] The syringe is fitted and fixed on the surface of the connection frame, and the syringe and the connection frame are flush at both ends. The injection port of the syringe is opened at a position in contact with the connection frame, and the specifications of the injection port match the frame opening of the connection frame.

[0018] As a further preferred embodiment of the present technical solution, the mouth of the reaction bottle is fitted with a sealing sleeve;

[0019] The syringe comprises:

[0020] An injection tube is used to be fixed to the surface of the connection frame, the injection port is opened on one side of the injection tube, a force-bearing rod is arranged inside the injection tube, an assembly contact plate is fixed to one end of the force-bearing rod, and the assembly contact plate passes through the frame port and is adapted to the carrier dish;

[0021] A piercing plug for piercing the sealing sleeve is fixed on one side of the surface of the carrier dish.

[0022] As a further preferred embodiment of the present technical solution, a socket is fixed to one end of the carrier plate away from the reaction bottle, and a receiving port penetrating the carrier plate is provided at the bottom of the socket;

[0023] The socket is plugged with a receiving bottle at the receiving port, and the receiving bottle is used to receive a mixed liquid of a reagent and acetone mixed gas.

[0024] As a further preferred embodiment of the technical solution, one end of the connecting plug tube is a conical protrusion sealing design, and the connecting plug tube is provided with a plurality of contact openings on the surface of the conical protrusion end for breaking the sealing design;

[0025] The other end of the connecting plug tube is installed inside the carrying vessel and communicated with the carrying vessel.

[0026] As a further preferred embodiment of the present technical solution, a flow splitter assembly is installed inside the distillation tower near the top exhaust pipe.

[0027] The splitter assembly is used to purify the acetone mixed gas;

[0028] The diversion component comprises:

[0029] Two storage dishes, the two storage dishes are installed at the middle end of the distillation tower, the contact surface at the center of the storage dishes is provided with a plurality of air holes, and a filter packing for filtering impurities in the acetone mixed gas is clamped between the two storage dishes, and the mixed liquid at the bottom of the distillation tower is gasified when the distillation tower is running and enters the filter packing along the air holes;

[0030] A contact plate for covering the air vent is fixed on the top surface of the storage dish near the exhaust pipe;

[0031] An insertion port is provided at the edge of the contact surface of the storage dish, and a ventilation grille is fixed on the top of the storage dish on which the contact plate is fixed, and the ventilation grille is adapted to the insertion port;

[0032] A polymerization funnel for blocking the acetone mixed gas is fixed on the top of the ventilation grille, and the polymerization funnel, the ventilation grille and the contact plate form a buffer space;

[0033] The distillation tower is filled with a low-temperature medium from the polymerization funnel to the top of the distillation tower;

[0034] An L-shaped reflux pipe that penetrates the filter filling is inserted between the two storage dishes. One end of the reflux pipe penetrates the distillation tower for connecting to the condenser pump assembly, and the other end of the reflux pipe is arranged in the buffer space. An associated pipe for filling low-temperature medium is installed on the surface of the distillation tower near the exhaust pipe, and one end of the associated pipe is connected to the condenser pump assembly.

[0035] As a further preferred embodiment of the present technical solution, the end of the reflux pipe in contact with the buffer space is rotatably connected with a hollow cylinder, and a driving source is installed at the center of the top of the distillation tower, and the driving source and the exhaust pipe do not interfere with each other;

[0036] The driving source is used to apply rotational force, and a connecting rod is fixed between the driving source and the top of the hollow cylinder, and the connecting rod passes through the distillation tower and the polymerization funnel in sequence;

[0037] The connecting rod is fixed with a plurality of bent scraper arms outside the portion located in the buffer space. The surfaces of the bent scraper arms are in contact with the inner surface of the air-permeable grille and are used to remove the liquid acetone mixture attached to the inner surface of the air-permeable grille.

[0038] As a further preferred embodiment of the present technical solution, the interior of the air permeable grille is a honeycomb structure, the top and bottom of the air permeable grille are designed to expose the honeycomb structure, and the inner and outer surfaces of the air permeable grille are designed to seal the honeycomb structure.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] By installing a measuring component that can quickly detect the purity of acetone through a colored reaction near the top exhaust pipe of the distillation tower, the measurement process is made more intuitive. Compared with the traditional monitoring method using sensors, it not only improves the detection efficiency, but also reduces the equipment cost and maintenance complexity. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is an isometric view of the present invention;

[0042] Figure 2 It is an assembly diagram of the distillation tower of the present invention;

[0043] Figure 3 This is an assembly diagram of a distillation tower of the present invention without filter packing;

[0044] Figure 4 The assembly diagram of the distillation tower of the present invention is equipped with a filter packing;

[0045] Figure 5 It is a structural composition diagram of the flow diversion component of the present invention;

[0046] Figure 6 It is a structural composition diagram of the measuring assembly of the present invention;

[0047] Figure 7 It is a structural exploded diagram of the measuring assembly of the present invention;

[0048] Figure 8 It is a structural exploded view of the storage component of the measurement assembly of the present invention;

[0049] Fig. 9 This is a structural diagram of the measurement component extraction parts of the present invention.

[0050] In the figure: 1. distillation tower; 101. upper cover; 102. control panel; 103. drain pipe; 104. support bracket; 105. heating resistor; 106. tower body; 107. exhaust pipe; 108. assembly lining; 109. raw material inlet pipe; 110. filter filling; 111. plug-in notch; 2. measuring assembly; 201. carrier dish; 202. receiving bottle; 203. plug-in seat; 204. sliding slot; 205. transparent protective cover; 206 , sealing sleeve; 207, reaction bottle; 208, connecting plug tube; 209, connecting frame; 210, injection tube; 211, assembly contact plate; 212, through plug; 213, movable notch; 214, force-bearing rod; 3, diversion assembly; 301, rotating motor; 302, connecting rod; 303, bent scraper arm; 304, reflux pipe; 305, storage dish; 306, plug interface; 307, hollow cylinder; 308, air-permeable grille; 309, polymerization funnel. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Before understanding the technical solution proposed by the present invention, in the distillation tower existing in the prior art, during the process of producing acetone, the mixed liquid (acetone, water, diacetone alcohol, butanone alcohol, etc.) will first undergo a preheating process after entering the distillation tower to increase the activity of gas molecules and promote the subsequent separation effect. Then, the mixed liquid will rise layer by layer in the tower and come into countercurrent contact with the reflux liquid from the top of the tower. In this process, components with different boiling points will condense and vaporize at different heights in the tower, thereby achieving effective separation of the components.

[0053] Embodiment 1: However, during operation, the setting of the reflux liquid plays a filtering role on the one hand, and on the other hand, it plays a role in liquefying the high-temperature gas and vaporizing the reflux liquid itself. However, in actual operation, the addition of the reflux liquid on the one hand adds too many impurities, and on the other hand, it also increases the cost of acetone production and preparation. For this purpose, a new technical solution is proposed.

[0054] like Figure 1-Figure 5As shown, the present invention provides a technical solution: an acetone distillation tower with a purity measurement function, comprising: a distillation tower 1 for preparing acetone, wherein the distillation tower 1 comprises: a tower body 106, it should be noted that the tower body 106 is the main part of the distillation tower 1, a liquid discharge pipe 103 for discharging waste liquid is fixed at the bottom of the tower body 106, a raw material inlet pipe 109 for filling a mixed liquid is installed on one side of the bottom of the tower body 106, the top of the tower body 106 is an upper cover 101, wherein one side of the top of the upper cover 101 is provided with an exhaust pipe 107 for discharging acetone gas, and the bottom end of the tower body 106 itself is provided with an assembly liner 108, The tower body 106 is equipped with a spiral heating resistor 105 at the assembly lining 108. The heating resistor 105 is used to uniformly heat the mixed liquid in the distillation tower 1 to ensure that the mixed liquid can be vaporized during the distillation process and improve the distillation efficiency. At the same time, the design of the spiral heating resistor 105 also takes into account the uniform distribution of heat energy. In addition, it should be noted that a control panel 102 for controlling the operation of the heating resistor 105 is installed at the middle end of the surface of the tower body 106. In addition, a number of supporting brackets 104 for fixing the position of the tower body 106 are also installed at the middle end of the surface of the tower body 106. The supporting brackets 104 and the control panel 102 do not interfere with each other.

[0055] Specifically, in this embodiment, the components of the waste liquid include impurities that are not completely separated, residual solvents, reaction by-products, and a portion of water vapor, etc. These waste liquids are discharged from the distillation tower 1 in an orderly manner through the drain pipe 103 to ensure the continuity of the distillation process and the purity of the product.

[0056] In addition, it should be noted that, in order to solve the problem proposed in the first embodiment, a flow splitter assembly 3 is installed in the distillation tower 1 of the present invention, wherein the flow splitter assembly 3 is used to purify the acetone mixed gas.

[0057] Specifically, the flow splitter assembly 3 is installed at a position of the tower body 106 in the distillation tower 1 near the top exhaust pipe 107. In addition, in this embodiment, the flow splitter assembly 3 includes: two storage dishes 305, the two storage dishes 305 are installed at the middle end of the distillation tower 1, and the contact surface at the center of the storage dishes 305 is provided with a plurality of air holes. The filter packing 110 for filtering impurities in the acetone mixed gas is clamped between the two storage dishes 305. Figure 3 and Figure 4 It can be seen that the acetone mixed gas at the bottom of the tower body 106 enters the filter filling 110 along the air permeable port.

[0058] It should be clear that in the present embodiment, the acetone mixed gas is the gas generated by the vaporization of the mixed liquid under the action of the heating resistor 105. In addition, in the present embodiment, the filter filling 110 plays the role of filtering in the reflux liquid. It should be further explained that the filter filling 110 is specifically an activated carbon block in the present embodiment. It should be supplemented that the interior of the activated carbon block has a rich microporous structure. These micropores can effectively adsorb impurity molecules in the acetone mixed gas, such as incompletely separated water, diacetone alcohol and butanone alcohol, thereby improving the purity of acetone. In addition, the selection of the activated carbon layer is not only based on its strong adsorption capacity, but also takes into account its good chemical stability and renewability, ensuring that an efficient filtering effect can be maintained during long-term use.

[0059] It should also be noted that, in the present embodiment, a contact plate for covering the air vent is fixed to the top surface of the storage dish 305 near the exhaust pipe 107, a plug-in port 306 is provided at the edge of the contact surface of the storage dish 305, a ventilation grille 308 is fixed to the top of the storage dish 305 on which the contact plate is fixed, the ventilation grille 308 and the plug-in port 306 are matched, a polymerization funnel 309 for blocking the acetone mixed gas is fixed to the top of the ventilation grille 308, and the polymerization funnel 309, the ventilation grille 308 and the contact plate form a buffer space.

[0060] It should be clear that the buffer space is used to temporarily store the filtered acetone mixed gas and slow down its flow rate for further separation and purification. When the acetone mixed gas enters the buffer space through the air-permeable grille 308, its flow rate will slow down due to the sudden expansion of the space. In this process, heavier impurities or incompletely separated components may be deposited at the bottom of the buffer space due to gravity or flow along a specific path of the air-permeable grille 308, thereby achieving preliminary physical separation. At the same time, the design of the aggregation funnel 309 can guide the direction of the airflow, making it more concentrated and flowing toward the exhaust pipe 107, reducing the vortex and mixing of the gas in the buffer space and improving the purification efficiency.

[0061] It should also be noted that, during actual operation of this embodiment, the tower body 106 is filled with low-temperature medium toward the top of the interior of the distillation tower 1 through the polymerization funnel 309. It should be clear that the filling method of the low-temperature medium is achieved through the following structure.

[0062] Specifically, in the present embodiment, an L-shaped reflux pipe 304 penetrating the filter filling 110 is inserted between the two storage dishes 305, one end of the reflux pipe 304 penetrates the distillation tower 1 for connecting to the condenser pump assembly, and the other end of the reflux pipe 304 is arranged in the buffer space, and an associated pipe for filling low-temperature medium is installed on the surface of the distillation tower 1 near the exhaust pipe 107, and one end of the associated pipe is connected to the condenser pump assembly.

[0063] It should be added that, in the present embodiment, the condenser pump assembly is responsible for condensing the high-temperature acetone vapor generated by the distillation process and refluxing the liquid acetone therein to the distillation tower 1 for recycling. At the same time, it is also responsible for filling a low-temperature medium into a specific area in the distillation tower 1 to further optimize the purification effect and distillation efficiency of acetone.

[0064] The specific condenser pump combination is divided into a condenser part and a pump part.

[0065] The condenser part can quickly condense high-temperature steam into liquid to reduce energy loss. In addition, it should be noted that the condenser is filled with an efficient cooling medium, such as cooling water or refrigerant, which is continuously circulated through an external circulation system to maintain a low temperature inside the condenser.

[0066] The pump part is used to transport the condensed liquid acetone back to the tower body 106 through the associated pipe. It should be noted that the pump has a stable flow and pressure control function. During actual operation, it can automatically adjust the reflux speed according to the actual situation in the tower body 106 to ensure the smooth progress of the distillation process.

[0067] It should also be noted that in the process of filling the cryogenic medium, the associated pipe plays a vital role as a channel connecting the condenser pump combination and the inside of the distillation tower 1. One end of the associated pipe is tightly connected to the condenser pump combination to ensure that the cryogenic medium can be smoothly transported to the distillation tower 1, and the other end is cleverly arranged at a position of the distillation tower 1 close to the exhaust pipe 107. By accurately controlling the injection direction and flow rate of the cryogenic medium, the acetone mixed gas in the buffer space is further cooled and purified.

[0068] In addition, in order to ensure the smooth progress of the low-temperature medium filling process, during actual operation, by equipping the associated pipe with a regulating valve and a flow meter, and electrically connecting the regulating valve, the flow meter and the control panel 102, it is possible to automatically adjust the filling speed of the low-temperature medium according to the actual temperature and pressure conditions in the distillation tower 1. In addition, the flow meter monitors the flow changes of the low-temperature medium in real time to provide accurate data support for the operator.

[0069] It should be noted that, through the combined effect of the above structures, the acetone distillation tower 1 with purity measurement function provided by the present invention not only realizes the effective purification and efficient distillation of the acetone mixed gas, but also significantly reduces the production cost and energy consumption level.

[0070] Embodiment 2: However, after the acetone mixed gas is cooled and liquefied in the buffer space, a layer of mixed liquid will remain on the surface of the air-permeable grille 308. The mixed liquid accumulated for a long time may cause corrosion to the air-permeable grille 308. In order to deal with this problem, this embodiment is improved on the basis of embodiment 1.

[0071] Specifically, in the present embodiment, the material of the air grille 308 is an alloy material that is corrosion-resistant, low-temperature-resistant and easy to clean, and a micro-nano-level hydrophobic coating technology is used on its surface. This hydrophobic coating can effectively reduce the adhesion of condensate on the surface of the air grille 308, so that the liquid acetone mixture can quickly slide to the collection area below at the beginning of its formation to avoid accumulation.

[0072] In addition, the structure of the ventilation grille 308 has also been adjusted, combining Figure 5 It can be seen that the interior of the air-permeable grille 308 is a honeycomb structure, the top and bottom of the air-permeable grille 308 are designed with exposed honeycomb structures, and the inner and outer surfaces of the air-permeable grille 308 are designed with sealed honeycomb structures.

[0073] In order to ensure the cleaning effect of the air-permeable grille 308, this embodiment also designs an automatic cleaning system, which removes the residual liquid acetone mixture by continuously scraping the inner surface of the air-permeable grille 308.

[0074] Specifically, the automatic cleaning system includes:

[0075] The hollow cylinder 307 is installed at one end of the return pipe 304 placed in the buffer space, Figure 5 It can be seen that the hollow opening on the surface of the hollow cylinder 307 is used to discharge the liquid acetone mixture to the reflux pipe 304. A driving source is installed at the center position of the top of the upper cover 101 in the distillation tower 1. The driving source and the exhaust pipe 107 do not interfere with each other, and the driving source is used to apply rotational force. A connecting rod 302 is fixed between the driving source and the top of the hollow cylinder 307. The connecting rod 302 passes through the distillation tower 1 and the polymerization funnel 309 in sequence. A plurality of bent scraper arms 303 are fixed outside the connecting rod 302 in the buffer space. The surface of the bent scraper arm 303 is in contact with the inner surface of the air grille 308 and is used to remove the liquid acetone mixture attached to the inner surface of the air grille 308.

[0076] It should be clear that in this embodiment, the driving source is the rotating motor 301, and the rotating motor 301 and the control panel 102 are connected by wires. In actual operation, the control panel 102 can also automatically start the rotating motor 301 to perform cleaning operations according to a preset time interval. Whenever the rotating motor 301 is started, it drives the bent scraper arm 303 to scrape the inner surface of the air grille 308 through the connecting rod 302, effectively removing the accumulated liquid acetone mixture. This automatic cleaning system not only improves the maintenance efficiency of the equipment, but also extends the service life of the air grille 308, and reduces the replacement cost caused by corrosion.

[0077] In summary, by optimizing the material, structure and cleaning system of the air grille 308, this embodiment effectively solves the problem of the acetone mixed gas affecting the air grille 308 after being cooled and liquefied in the buffer space, and further improves the purification efficiency of acetone and the overall performance of the distillation tower 1.

[0078] Embodiment 3: However, when collecting the purity of acetone gas, the traditional method of monitoring with the help of sensors has certain limitations, such as sensor sensitivity, response time, and maintenance cost. In order to overcome these challenges, this embodiment introduces a purity detection device based on the color reaction between acetone and reactants to perform rapid and intuitive detection.

[0079] It should be understood that, in the present embodiment, a plug-in notch 111 is provided outside the tower body 106 near the top exhaust pipe 107 , and the plug-in notch 111 is used for installing the measuring component 2 .

[0080] Specifically, in this embodiment, the measuring component 2 includes:

[0081] The carrier dish 201 is used to store acetone mixed gas and reagents that produce colored reactions with acetone. A connecting plug tube 208 is installed on the back of the carrier dish 201. The connecting plug tube 208 is compatible with the plug-in notch 111 and is used to connect the carrier dish 201 and the distillation tower 1. The carrier dish 201 is parallel to the distillation tower 1 with the help of the connecting plug tube 208. A transparent protective cover 205 is installed at the dish mouth of the carrier dish 201. A reaction bottle 207 connected to the inside of the carrier dish 201 is installed at one end of the carrier dish 201. The reaction bottle 207 is used to store reagents. A syringe for drawing the acetone mixed gas in the distillation tower 1 into the carrier dish 201 along the connecting plug tube 208 is installed on one side of the carrier dish 201.

[0082] It should be clear that when the syringe performs the extraction stroke, the reagent and acetone mixed gas mix and are displayed through the transparent protective cover 205 in the form of a colored reaction.

[0083] Specifically, in the present embodiment, sodium nitrosylferrocyanide is smeared inside the carrier dish 201 to act as an additive, wherein the reagent that produces a colored reaction with acetone is a sodium hydroxide solution in the present embodiment. When acetone and sodium nitrosylferrocyanide are mixed and sodium hydroxide solution is added, it is observed that the solution gradually turns bright red. It should be added that the colored reaction is specifically: C3H6O + NaNO2[Fe(CN)6]3+NaOH→bright red complex+H2O, wherein the redder the solution is, the higher the purity of the acetone is. This significant color change provides the operator with an intuitive and accurate indication of the purity of acetone without relying on complex sensor equipment, thereby reducing equipment costs and maintenance difficulties.

[0084] In addition, it should be added that, in the present embodiment, a through opening is opened on one side of the supporting dish 201, and a connecting frame 209 is installed at the through opening of the supporting dish 201. The long frame side of the connecting frame 209 is parallel to the long dish side of the supporting dish 201. The syringe is fitted and fixed on the surface of the connecting frame 209, and the front and rear ends of the syringe and the connecting frame 209 are flush. The injection port of the syringe is opened at a position in contact with the connecting frame 209, and the specifications of the injection port match the frame opening of the connecting frame 209.

[0085] It should be clear that in order to ensure the stability and accuracy of the injection process, high-strength sealing materials are used between the connection frame 209 and the carrier dish 201 to prevent any possible liquid leakage. This sealing design not only ensures the cleanliness of the experimental environment, but also improves the accuracy of the experimental data.

[0086] Further, in this embodiment, the mouth of the reaction bottle 207 is attached with a sealing sleeve 206, referring to Figure 7 and Fig. 9 It can be seen that the syringe includes: an injection tube 210, which is used to be fixed to the surface of the connection frame 209, the injection port is opened on one side of the injection tube 210 and forms a movable notch 213, a force rod 214 is arranged inside the injection tube 210, one end of the force rod 214 is fixed with an assembly contact plate 211, the assembly contact plate 211 passes through the frame opening and is adapted to the carrier 201, and a piercing plug 212 for piercing the sealing sleeve 206 is fixed on one side of the surface of the carrier 201, refer to Figure 8 and Fig. 9 It can be seen that in order to enhance the sliding efficiency of the assembly contact plate 211 , a sliding groove 204 adapted to the assembly contact plate 211 is provided on a side of the inner side of the carrier 201 away from the connection frame 209 .

[0087] It should be noted that, in the present embodiment, one end of the connecting plug tube 208 is a sealing design with a conical protrusion, and the connecting plug tube 208 is provided with a plurality of contact ports on the surface of the conical protrusion end for breaking the sealing design, and the other end of the connecting plug tube 208 is installed inside the carrier dish 201 and is connected to the carrier dish 201.

[0088] Specifically, when the present embodiment is used, the through-plug 212 penetrates the sealing sleeve 206 by pushing the stress rod 214, and then the through-plug 212 is installed at the plugging notch 111. At this time, the injection tube 210 is connected with the acetone mixed gas inside the distillation tower 1. Subsequently, the operator can slowly pull the stress rod 214 to form a negative pressure inside the injector, so that the acetone mixed gas in the distillation tower 1 is drawn into the support vessel 201 along the connecting plug tube 208. In this process, the acetone mixed gas is quickly mixed with the sodium nitrosylferricyanide pre-applied in the support vessel 201 and the sodium hydroxide solution in the reaction bottle 207. It should be noted that, almost at the moment of mixing, it can be observed that the solution in the support vessel 201 begins to change color, gradually changing from colorless to bright red. This color change process is rapid and intuitive, providing the operator with instant and accurate acetone purity information. As the acetone purity increases, the red color of the solution will become brighter, thereby realizing rapid detection and evaluation of the acetone purity.

[0089] It should also be noted that, in order to recover the solution in the carrier dish 201, the present embodiment also designs a simple and efficient solution recovery component, which includes: a socket 203 is fixed at one end of the carrier dish 201 away from the reaction bottle 207, a receiving port penetrating the carrier dish 201 is provided at the bottom of the socket 203, a receiving bottle 202 is plugged into the receiving port of the socket 203, and the receiving bottle 202 is used to receive a mixed liquid of the reagent and the acetone mixed gas.

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An acetone distillation tower with a purity measurement function, characterized in that: include: A distillation column (1) for preparing acetone; The distillation tower (1) is provided with a plug-in notch (111) for installing the measuring component (2) at a position close to the top exhaust pipe (107); The measuring component (2) comprises: The carrier dish (201) is used to contain the acetone mixed gas and the reagent that produces a colored reaction with the acetone; A connecting plug tube (208) is installed at the back of the supporting dish (201), the connecting plug tube (208) is matched with the plug-in notch (111) and is used to connect the supporting dish (201) and the distillation tower (1), and the supporting dish (201) and the distillation tower (1) are parallel with each other by means of the connecting plug tube (208); A transparent protective cover (205) is installed at the mouth of the carrier dish (201), and a reaction bottle (207) connected to the inside of the carrier dish (201) is plugged and installed at one end of the carrier dish (201), and the reaction bottle (207) is used to store reagents; A syringe for drawing the acetone mixed gas in the distillation tower (1) into the supporting vessel (201) along the connecting plug tube (208) is installed on one side of the supporting vessel (201); When the syringe performs the extraction stroke, the reagent and the acetone mixed gas are mixed and displayed through the transparent protective cover (205) in the form of a colored reaction; A through opening is provided on one side of the supporting dish (201), and a connecting frame (209) is installed at the through opening of the supporting dish (201), wherein the long frame side of the connecting frame (209) is parallel to the long dish side of the supporting dish (201); The syringe is fixedly attached to the surface of the connection frame (209), and the ends of the syringe and the connection frame (209) are flush with each other. The injection port of the syringe is located at a position in contact with the connection frame (209), and the specifications of the injection port match the frame opening of the connection frame (209); The mouth of the reaction bottle (207) is fitted with a sealing sleeve (206); The syringe comprises: An injection tube (210) is used to be fixed to the surface of the connection frame (209), the injection port is opened on one side of the injection tube (210), a force-bearing rod (214) is arranged inside the injection tube (210), an assembly contact plate (211) is fixed to one end of the force-bearing rod (214), and the assembly contact plate (211) passes through the frame port and is adapted to the carrier dish (201); A piercing plug (212) for piercing the sealing sleeve (206) is fixed on one side of the surface of the carrier dish (201); A socket (203) is fixed to one end of the carrier (201) away from the reaction bottle (207), and a receiving port penetrating the carrier (201) is provided at the bottom of the socket (203); The receiving port of the socket (203) is connected with a receiving bottle (202), and the receiving bottle (202) is used to receive a mixed liquid of a reagent and an acetone mixed gas; One end of the connecting plug tube (208) is a conical protrusion with a sealing design, and the connecting plug tube (208) is provided with a plurality of contact openings on the surface of the conical protrusion end for breaking the sealing design; The other end of the connecting plug tube (208) is installed inside the supporting vessel (201) and is connected to the supporting vessel (201); A flow splitter assembly (3) is installed inside the distillation tower (1) at a position close to the top exhaust pipe (107). The flow splitter (3) is used to purify the acetone mixed gas; The flow diversion component (3) comprises: Two storage dishes (305), the two storage dishes (305) are installed at the middle end of the distillation tower (1), the contact surface at the center of the storage dishes (305) is provided with a plurality of air holes, and a filter filling (110) for filtering impurities in the acetone mixed gas is clamped between the two storage dishes (305), and the mixed liquid at the bottom of the distillation tower (1) is vaporized when the distillation tower (1) is in operation and enters the filter filling (110) along the air holes; A contact plate for covering the air vent is fixed on the top surface of the storage dish (305) close to the exhaust pipe (107); An insertion port (306) is provided at the edge of the contact surface of the storage dish (305), and a ventilation grille (308) is fixed on the top of the storage dish (305) on which the contact plate is fixed, and the ventilation grille (308) is matched with the insertion port (306); A polymerization funnel (309) for blocking the acetone mixed gas is fixed on the top of the ventilation grille (308), and the polymerization funnel (309), the ventilation grille (308) and the contact plate form a buffer space; The distillation tower (1) is filled with a low-temperature medium from the polymerization funnel (309) to the top of the distillation tower (1); An L-shaped reflux pipe (304) is inserted between the two storage dishes (305) and passes through the filter filling (110). One end of the reflux pipe (304) passes through the distillation tower (1) for connecting to the condenser pump assembly. The other end of the reflux pipe (304) is arranged in the buffer space. An associated pipe for filling a low-temperature medium is installed on the surface of the distillation tower (1) near the exhaust pipe (107). One end of the associated pipe is connected to the condenser pump assembly.

2. The acetone distillation tower with purity measurement function according to claim 1, characterized in that: The reflux pipe (304) is rotatably connected to a hollow cylinder (307) at one end in contact with the buffer space, and a driving source is installed at the center of the top of the distillation tower (1), and the driving source and the exhaust pipe (107) do not interfere with each other; The driving source is used to apply rotational force, and a connecting rod (302) is fixed between the driving source and the top of the hollow cylinder (307), and the connecting rod (302) sequentially passes through the distillation tower (1) and the polymerization funnel (309); A plurality of bent scraper arms (303) are fixed outside the connecting rod (302) in the buffer space. The surfaces of the bent scraper arms (303) are in contact with the inner surface of the air-permeable grille (308) and are used to remove the liquid acetone mixture attached to the inner surface of the air-permeable grille (308).

3. The acetone distillation tower with purity measurement function according to claim 1, characterized in that: The interior of the air-permeable grille (308) is a honeycomb structure, the top and bottom of the air-permeable grille (308) are designed to expose the honeycomb structure, and the inner and outer surfaces of the air-permeable grille (308) are designed to seal the honeycomb structure.

Images