Phosphorus-containing waste liquid hydrolysis experiment device

Abstract

The utility model relates to a phosphorus-containing waste liquid hydrolysis experiment device, which belongs to the technical field of hydrolysis reaction and comprises a reaction kettle, a temperature regulation and control device, a base, a support and a stirring device, the temperature regulation and control device is arranged on the base, the reaction kettle is arranged in the temperature regulation and control device, the support is arranged on one side of the base, and the stirring device is arranged at the top end of the support. A clamping ring is further arranged on the bracket, and the reaction kettle is fixed through the clamping ring, so that the reaction kettle is arranged in the temperature regulation and control device; the stirring device comprises a stirring controller, a stirring rod, a stirring paddle, a motor and a two-section type universal joint, the stirring controller is arranged at the top end of the support, the motor is arranged on one side of the support, the stirring controller is electrically connected with the motor, one end of the two-section type universal joint is connected with the output end of the motor, and the other end of the two-section type universal joint is connected with the stirring rod; a stirring paddle is arranged at one end, extending into the reaction kettle, of the stirring rod; the base comprises a fixed base and a movable base. The device is simple in structure, convenient to use, high in reaction efficiency and wide in application range.

Description

Technical Field

[0001] This utility model relates to an experimental device, specifically an experimental device for hydrolyzing phosphorus-containing waste liquid, belonging to the field of hydrolysis reaction technology. Background Technology

[0002] With industrial development, the discharge of various phosphorus-containing waste liquids has caused environmental pollution. These waste liquids have stable molecular structures and certain biological toxicity. For example, the phosphorus-containing waste liquid produced in the production process of pesticide intermediates is hazardous waste, which is toxic, reactive, and corrosive. The phosphorus-containing waste mainly consists of the pre-distillate, reaction vessel residue, and tank cleaning waste liquid produced in the production process of pesticide intermediate diethyl methyl phosphite. Its main components are phosphorus trichloride, methyl dichloride, etc. The treatment of these phosphorus-containing wastes is crucial.

[0003] Currently, there are two main methods for treating phosphorus-containing waste liquid: (1) using solvent extraction to separate phosphorous acid; (2) using deep hydrolysis to obtain phosphorous acid crystals by using hydrolysis and evaporation to reduce volume. The existing laboratory hydrolysis method uses a hydrolysis experimental device, which requires a laboratory reactor. The existing reactor cannot control the reaction rate well, has a single function, and cannot measure the temperature in real time or treat the gas after the reaction. When the solution in the reactor is mixed, a stirring device is generally used. However, the stirring device in the existing reactor needs to be completely disassembled when cleaning, replacing, or repairing, which is cumbersome, time-consuming, and labor-intensive.

[0004] Patent CN216605243U describes a laboratory titanium oxysulfate hydrolysis apparatus, comprising a jacketed heating device, a stirring device, a condenser, and thermocouples. The jacketed heating device houses a glass bottle with at least four openings. The stirring device is positioned inside the bottle through one of the openings, the condenser is connected to the bottle through another opening, and the thermocouples are positioned inside the bottle through yet another opening. This design optimizes the arrangement of functional modules in the titanium oxysulfate hydrolysis process, improving equipment efficiency, reducing the footprint, and increasing detection efficiency. However, the stirring device is fixed, requiring disassembly for cleaning, replacement, and maintenance. Furthermore, the jacketed heating device and the glass bottle must be moved before the stirring device can be operated, making the process cumbersome. Additionally, the jacketed heating device can only heat the glass bottle, failing to meet the cooling requirements for other operations, resulting in limited functionality.

[0005] Therefore, developing an experimental device for hydrolyzing phosphorus-containing waste liquid that can overcome the above defects has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a phosphorus-containing waste liquid hydrolysis experimental device. The device has a simple structure, is easy to use, has high reaction efficiency, and is widely applicable.

[0007] To solve the above technical problems, this utility model provides a phosphorus-containing waste liquid hydrolysis experimental device, including a reaction vessel, a temperature control device, a base, a support, and a stirring device. The temperature control device is provided on the base, and the reaction vessel is provided inside the temperature control device. The temperature control device controls the temperature of the solution in the reaction vessel. A support is provided on one side of the base, and a stirring device is provided at the top of the support. The stirring device extends into the reaction vessel to stir. A clamping ring is also provided on the support to fix the reaction vessel in place within the temperature control device.

[0008] The stirring device includes a stirring controller, a stirring rod, a stirring paddle, a motor, and a double-section universal joint. The stirring controller is located at the top of the support. The motor is mounted on one side of the support via a fixed sleeve. The stirring controller is electrically connected to the motor to control the stirring speed. One end of the double-section universal joint is detachably connected to the output end of the motor, and the other end is detachably connected to the stirring rod. The stirring rod has a stirring paddle at one end that extends into the reaction vessel.

[0009] The base includes a fixed base and a movable base mounted on the fixed base. The movable base moves horizontally on the fixed base. The support is mounted on the fixed base, and the temperature control device is mounted on the movable base.

[0010] The further defined technical solution of this utility model is:

[0011] Furthermore, in the aforementioned experimental apparatus for hydrolyzing phosphorus-containing waste liquid, the upper end of the reactor is provided with at least five openings, one of which is located in the middle of the reactor, and the remaining openings are located in the circumferential direction of the middle opening. The middle opening is used for the insertion of a stirring device. Another opening is provided with a condenser tube that communicates with the inside of the reactor. Another opening is provided with a burette that communicates with the reactor. Another opening is provided with a temperature detection device that extends into the reactor to detect the temperature. The remaining openings are provided with bottle stoppers.

[0012] In terms of technical advantages, the upper opening of the reaction vessel of this utility model has at least five openings. While meeting the basic stirring requirements, it can also add a burette for adding solution, controlling the feed rate, and effectively controlling the reaction rate. The addition of a condenser tube allows for the condensation and recovery of gases generated during the reaction, enabling timely treatment of the generated gases and promoting environmental friendliness. The addition of a temperature detection device facilitates real-time monitoring of the solution temperature inside the reaction vessel, allowing for timely adjustment of the temperature control device to control the overall reaction temperature and ensure high efficiency. The remaining openings can be equipped with auxiliary devices according to actual usage requirements, making the device versatile, improving its adaptability, and reducing the footprint of the equipment.

[0013] In the aforementioned experimental apparatus for hydrolyzing phosphorus-containing waste liquid, the temperature detection device is a thermocouple, and the thermocouple is covered with a heat-conducting oil glass tube.

[0014] The technical advantage is that by setting a thermocouple inside the reactor as a temperature sensing element, the structure is simple, the measurement range is wide, it is easy to use, and the temperature measurement is accurate, reliable, and highly precise.

[0015] In the aforementioned experimental apparatus for hydrolyzing phosphorus-containing waste liquid, the temperature control device is a reactor jacket fitted on the outer wall of the reactor, and heat transfer oil flows inside the reactor jacket for temperature control.

[0016] In terms of technical effect, this utility model does not use a water bath or heating device for temperature control. Instead, it sets up a reaction vessel jacket and introduces heat transfer oil into the jacket for temperature control. The heat transfer oil that is used for heating or cooling separately enters the reaction vessel jacket to control the temperature of the reaction vessel. This can achieve both heating and cooling, meet multiple operations, and has a wider range of applications.

[0017] In the aforementioned experimental apparatus for hydrolyzing phosphorus-containing waste liquid, the stirring paddle includes a fixed sleeve and stirring blades. The fixed sleeve is fixedly mounted on the stirring rod, and multiple fixed blocks are formed by extending outward along the circumference of the fixed sleeve. The fixed blocks are vertically mounted and have fixing holes. The stirring blades are detachably mounted on the fixed blocks through the fixing holes and bolts.

[0018] Technical advantages: The stirring blades of this utility model are individually designed and can be easily detached and mounted on the stirring rod, facilitating installation, maintenance, and replacement, making it more convenient to use. The detachable stirring blades also facilitate replacement and maintenance without requiring overall replacement, thus reducing costs. The vertically mounted fixing block ensures that the stirring blades are positioned vertically, allowing for better mixing of the solution and ensuring uniform mixing.

[0019] In the aforementioned experimental apparatus for hydrolyzing phosphorus-containing waste liquid, the stirring blades are made of low-density polyethylene.

[0020] In terms of technical benefits, the stirring blade of this utility model is made of soft low-density polyethylene (LDPE), which has good corrosion resistance and chemical resistance, high strength, and good flexibility. This is beneficial for ensuring uniform stirring under the action of rotational force during use. When not in use, it hangs down naturally, making it easy to remove the stirring rod from the opening during disassembly, which is convenient for cleaning, maintenance, and replacement.

[0021] In the aforementioned experimental apparatus for hydrolyzing phosphorus-containing waste liquid, the movable base is smaller than the fixed base. One end of the movable base is movably connected to the fixed base via a bearing. The fixed base is also provided with positioning rods on both sides. One end of the positioning rod is movably connected to the fixed base. When the positioning rod is set vertically, it limits the movable base. When the positioning rod is set horizontally, the movable base moves horizontally.

[0022] In terms of technical effects, the base of this utility model includes a fixed base and a movable base. The fixed base is used for stable support of the bracket and to fix the motor, stirring controller, etc. The movable base is equipped with a temperature control device and a reaction vessel. When cleaning, replacing or maintaining the stirring device, the stirring rod can be disassembled from the double-section universal joint, and then the movable base can be pulled out to offset the reaction vessel from the motor, making it easy to operate with the stirring rod alone without disassembling the entire stirring device, saving time and reducing labor intensity. When disassembly is not required, the movable base can be fixed to the fixed base with a simple positioning rod to ensure normal operation. The operation is simple.

[0023] The beneficial effects of this utility model are:

[0024] This invention employs a burette, which facilitates control of the material feed rate and is beneficial for controlling the reaction rate; it also incorporates a temperature detection device to measure the temperature at any time, which helps control the reaction and optimizes the reaction of the solution in the reactor, thereby improving reaction efficiency.

[0025] In this invention, a condenser tube is installed on the reactor to facilitate the condensation of the generated gas. The condensed gas can be further processed, and the condensed and recovered liquid can be centrally processed or utilized.

[0026] The upper end of the reaction vessel of this utility model

[0027] This invention utilizes a movable base and a double-section universal joint in the stirring device to offset the reaction vessel from the motor in the stirring device during cleaning, replacement, and maintenance of the hydrolysis device. This facilitates the cleaning, replacement, and maintenance of the stirring rods and impellers in the reaction vessel. At the same time, the impeller blades are soft blades, making them easy to remove and install, saving time and effort, and increasing efficiency.

[0028] This invention has a simple structure, is easy to use, saves time and effort, effectively improves efficiency, and can well meet the requirements of hydrolysis reaction, making it widely applicable. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the experimental apparatus for hydrolyzing phosphorus-containing waste liquid according to the present invention;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the stirring impeller;

[0031] Figure 3 for Figure 1 Schematic diagram of a double-section universal joint;

[0032] In the diagram: 1-Reaction vessel, 2-Temperature control device, 31-Fixed base, 32-Moving base, 33-Positioning rod, 4-Bracket, 51-Stirring controller, 52-Stirring rod, 53-Stirring paddle, 531-Fixed sleeve, 532-Stirring paddle blade, 533-Fixed block, 54-Motor, 55-Double-section universal joint, 6-Condenser, 7-Bridging tube, 8-Temperature detection element. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them; the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0034] This embodiment provides a phosphorus-containing waste liquid hydrolysis experimental apparatus, the structure of which is as follows: Figure 1-3 As shown, the system includes a reaction vessel 1, a temperature control device 2, a base 3, a support 4, and a stirring device. The base 3 is equipped with the temperature control device 2, and the reaction vessel 1 is located inside the temperature control device 2. The temperature control device 2 controls the temperature of the solution inside the reaction vessel 1. The support 4 is located on one side of the base, and the top of the support 4 is equipped with a stirring device that extends into the reaction vessel 1 for stirring. The support 4 is also equipped with a clamping ring, which is used to fix the reaction vessel 1 inside the temperature control device 2.

[0035] The upper end of the reactor 1 has five openings. One opening is located in the middle of the reactor 1, and the other openings are located in the circumferential direction of the middle opening. The middle opening is used for the insertion of the stirring device. Another opening is equipped with a condenser 6 that communicates with the inside of the reactor 1. Another opening is equipped with a burette 7 that communicates with the reactor 1. Another opening is equipped with a temperature sensing element 8 that extends into the reactor 1 to detect the temperature. The other openings are equipped with bottle stoppers.

[0036] The stirring device includes a stirring controller 51, a stirring rod 52, a stirring paddle 53, a motor 54, and a double-section universal joint 55. The stirring controller 51 is located at the top of the support 4. The motor 54 is mounted on one side of the support 4 via a fixed sleeve. The stirring controller 51 is electrically connected to the motor 54 to control the stirring speed. One end of the double-section universal joint 55 is detachably connected to the output end of the motor 54, and the other end is detachably connected to the stirring rod 52. The stirring rod 52 has a stirring paddle 53 at one end that extends into the reactor 1. The stirring rod 52 is fixed to the middle opening of the reactor 1 by a rotating cover or a screw plug. The stirring rod 52 rotates within the rotating cover or screw plug, which ensures that the stirring rod 52 is in the middle of the reactor 1 and prevents the solution in the reactor 1 from splashing out of the reactor 1 during stirring.

[0037] The base includes a fixed base 31 and a movable base 32 disposed on the fixed base 31. The movable base 32 moves horizontally on the fixed base 31. The bracket 4 is disposed on the fixed base 31, and the temperature control device 2 is disposed on the movable base 32.

[0038] In this embodiment, the temperature sensing element 8 is a thermocouple, and the thermocouple is covered with a heat-conducting oil glass tube.

[0039] In this embodiment, the temperature control device 2 is a reactor jacket fitted on the outer wall of the reactor 1. The reactor jacket has an inner cavity for the flow of heat transfer oil after heating or cooling for temperature control.

[0040] In this embodiment, refer to Figure 2 The stirring paddle 53 includes a fixed sleeve 531 and stirring blades 532. The fixed sleeve 531 is fixedly mounted on the stirring rod 52, or it can be fixedly connected by threads and nuts. Multiple fixing blocks 533 are formed by extending outward along the circumference of the fixed sleeve 531. The fixing blocks 533 are vertically arranged and have fixing holes. The stirring blades 532 are detachably mounted on the fixing blocks 533 through the fixing holes and bolts. The stirring blades are vertically arranged on the fixing blocks to facilitate stirring of the solution in the reactor 1. The stirring blades 532 are made of low-density polyethylene material. The soft blade characteristics make it easy to extend into and out of the reactor opening, which is convenient for installation and disassembly.

[0041] In this embodiment, the movable base 32 is smaller than the fixed base 31. One end of the movable base 32 is movably connected to the fixed base 31 via a bearing. The fixed base 31 is also provided with positioning rods 33 on both sides. One end of the positioning rods 33 is movably connected to the fixed base 31. When the positioning rods 33 are set vertically, they limit the movable base 32. When the positioning rods 33 are set horizontally, the movable base 32 moves horizontally. One end of the positioning rods 33 is movably connected to the fixed base 31 via bolts. Pull rings are also provided on both sides of the movable base 32, so that when it needs to be moved, the operator can hold the pull rings to move the movable base 32 smoothly.

[0042] In practice:

[0043] Water is added to the reactor. Phosphorus-containing waste liquid is added to the reactor at a controlled rate through a burette on the reactor. A matching stopper is installed on the burette. The reaction temperature is regulated by the temperature control device and temperature detection device. The stirring controller controls the rotation of the motor. The motor drives the stirring paddle on the stirring rod to rotate through a double-joint universal joint to carry out the reaction. The reaction gas is discharged through the condenser. The discharge is a cooling and recovery treatment of the reaction gas. The burette and condenser can be further stabilized by clamping them on the support as needed. The condenser is circulated with water.

[0044] After the reaction is complete, when it is necessary to pour out the reaction liquid or clean and replace the agitator, change the positioning rod on the fixed base from a vertical position against the moving base to a horizontal position by adjusting the bolts. Disconnect the end of the double-section universal joint connected to the agitator, push the moving base, and the moving base will move the temperature control device, the reaction vessel, and the agitator. Set them apart from the motor, remove the agitator from the reaction vessel to operate it, or remove the reaction vessel and take out the reaction liquid from the corresponding opening.

[0045] This invention has a simple structure, is easy to use, saves time and effort, effectively improves efficiency, and can well meet the requirements of hydrolysis reaction, making it widely applicable.

[0046] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. An experimental apparatus for hydrolyzing phosphorus-containing waste liquid, characterized in that: The system includes a reaction vessel (1), a temperature control device (2), a base, a support (4), and a stirring device. The temperature control device (2) is located on the base, and the reaction vessel (1) is located inside the temperature control device (2). The temperature control device (2) controls the temperature of the solution in the reaction vessel (1). The support (4) is located on one side of the base, and the stirring device is located at the top of the support (4). The stirring device extends into the reaction vessel (1) to stir. The support (4) is also provided with a clamping ring, which fixes the reaction vessel (1) so that the reaction vessel (1) is placed inside the temperature control device (2). The stirring device includes a stirring controller (51), a stirring rod (52), a stirring paddle (53), a motor (54), and a double-section universal joint (55). The stirring controller (51) is located at the top of the support (4). The motor (54) is mounted on one side of the support (4) via a fixed sleeve. The stirring controller (51) is electrically connected to the motor (54) to control the stirring speed. One end of the double-section universal joint (55) is detachably connected to the output end of the motor (54), and the other end is detachably connected to the stirring rod (52). The stirring paddle (53) is located at one end of the stirring rod (52) that extends into the reactor (1). The base includes a fixed base (31) and a movable base (32) disposed on the fixed base (31). The movable base (32) moves horizontally on the fixed base (31). The bracket (4) is disposed on the fixed base (31). The temperature control device (2) is disposed on the movable base (32).

2. The experimental apparatus for hydrolysis of phosphorus-containing waste liquid according to claim 1, characterized in that: The upper end of the reactor (1) is provided with at least five openings, one of which is located in the middle of the reactor (1), and the remaining openings are located in the circumferential direction of the middle opening. The middle opening is used for the insertion of the stirring device. A condenser tube (6) is provided on another opening and communicates with the inside of the reactor (1). A burette (7) is provided on another opening and communicates with the reactor (1). A temperature detection element (8) is provided in another opening and extends into the reactor (1) to detect the temperature. Bottle stoppers are provided on the remaining openings.

3. The experimental apparatus for hydrolysis of phosphorus-containing waste liquid according to claim 2, characterized in that: The temperature detection element (8) is a thermocouple, and the thermocouple is covered with a heat-conducting oil glass tube.

4. The experimental apparatus for hydrolysis of phosphorus-containing waste liquid according to claim 1, characterized in that: The temperature control device (2) is a reaction vessel jacket fitted on the outer wall of the reaction vessel (1), and heat transfer oil flows through the reaction vessel jacket for temperature control.

5. The experimental apparatus for hydrolysis of phosphorus-containing waste liquid according to claim 1, characterized in that: The stirring paddle (53) includes a fixed sleeve (531) and stirring blades (532). The fixed sleeve (531) is fixedly mounted on the stirring rod (52). Multiple fixing blocks (533) are formed by extending outward along the circumferential direction of the fixed sleeve (531). The fixing blocks (533) are vertically mounted and have fixing holes. The stirring blades (532) are detachably mounted on the fixing blocks (533) through the fixing holes and bolts.

6. The experimental apparatus for hydrolysis of phosphorus-containing waste liquid according to claim 5, characterized in that: The stirring blade (532) is made of low-density polyethylene.

7. The experimental apparatus for hydrolysis of phosphorus-containing waste liquid according to claim 1, characterized in that: The movable base (32) is smaller than the fixed base (31). One end of the movable base (32) is movably connected to the fixed base (31) via a bearing. The fixed base (31) is also provided with positioning rods (33) on both sides. One end of the positioning rod (33) is movably connected to the fixed base (31). When the positioning rod (33) is set vertically, it limits the movable base (32). When the positioning rod (33) is set horizontally, the movable base (32) moves horizontally.

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