CN219150097U - Cadmium chloride solution preparation device - Google Patents

Abstract

The cadmium oxide material inlet, the HCl solution inlet and the water inlet are communicated with the kettle body, the jacket surrounds the reaction kettle from the outside, and the kettle body is used for enabling cadmium oxide materials and HCl fed into the reaction kettle to react to form cadmium chloride and the formed cadmium chloride and water to form a cadmium chloride solution; the cadmium oxide feeder is used for conveying cadmium oxide materials into the reaction kettle through a cadmium oxide material inlet; the HCl supply line is used for supplying HCl solution into the reaction kettle through an HCl solution inlet; the water supply line is used for supplying water into the reaction kettle through the water inlet; the cooling circulation system is used for circulating a cooling medium into the jacket so as to cool the reaction kettle; the cadmium oxide feeder can be movably positioned at the kettle body of the reaction kettle so as to improve the use flexibility of the part for conveying the cadmium oxide material.

Description

Cadmium chloride solution preparation device

Technical Field

The present disclosure relates to the field of cadmium chloride solution production, and more particularly to a cadmium chloride solution preparation device.

Background

Cadmium chloride solutions have numerous uses in today's society: agents for use in the manufacture of photographic paper and carbon paper; the method is used for plating cadmium, preparing a cadmium battery, ceramic glaze, synthetic fibers and printing and dyeing auxiliary agents; used as a polishing agent for manufacturing special mirrors in the optical instrument industry; the nickel plating electrolyte is used as a brightening agent; but also as an analytical reagent. The cadmium chloride solution can be prepared by chloridizing cadmium oxide and hydrochloric acid.

The existing preparation method of the cadmium chloride solution adopts the steps of manually weighing and proportioning cadmium oxide and hydrochloric acid, and then manually feeding the cadmium oxide and hydrochloric acid into a reaction kettle for chlorination reaction. The existing equipment has low degree of automation, most of process operations need to be operated by manual cautious, and the operation requirements on operators are quite high. When the manual batching is carried out, the personnel and the materials are more contacted, because cadmium oxide has certain toxicity, the inhaled cadmium oxide can be carcinogenic, and in addition, hydrochloric acid has strong corrosiveness, so the operation difficulty of the manual batching is high, and the personnel safety cannot be ensured.

Chinese patent application publication No. CN114130275a published by 3 and 4 of 2022 discloses a system for producing a cadmium chloride mixed crystal hydrate solution, in which a cadmium chloride solution preparing portion adopts a configuration with a high degree of automation, but a cadmium oxide supply line of the cadmium chloride solution preparing portion adopts a screw conveyor to supply cadmium oxide powder, but from the structure given in the patent document, the screw conveyor is stationary (i.e., not movable), so that the screw conveyor occupies a large area and is inconvenient to use flexibly.

Disclosure of Invention

In view of the problems in the background art, an object of the present disclosure is to provide a cadmium chloride solution preparation device that can improve the flexibility of use of a portion transporting cadmium oxide material in a cadmium chloride solution preparation process and reduce the floor space of the cadmium chloride solution preparation device.

Thus, in some embodiments, a cadmium chloride solution preparation device comprises a reaction kettle, a cadmium oxide feeder, an HCl supply line, a water supply line and a cooling circulation system, wherein the reaction kettle comprises a kettle body, a cadmium oxide material inlet, an HCl solution inlet, a water inlet and a jacket, the cadmium oxide material inlet, the HCl solution inlet and the water inlet are communicated with the kettle body, the jacket surrounds the reaction kettle from the outside, the kettle body is used for allowing cadmium oxide material and HCl fed into the reaction kettle to react to form cadmium chloride, and the formed cadmium chloride and water form a cadmium chloride solution; the cadmium oxide feeder is used for conveying cadmium oxide materials into the reaction kettle through a cadmium oxide material inlet; the HCl supply line is used for supplying HCl solution into the reaction kettle through an HCl solution inlet; the water supply line is used for supplying water into the reaction kettle through the water inlet; the cooling circulation system is used for circulating a cooling medium into the jacket so as to cool the reaction kettle; the cadmium oxide feeder can be movably positioned at the kettle body of the reaction kettle.

In some embodiments, the cadmium oxide material inlet is funnel-shaped, and the reaction kettle further comprises a first gate valve, wherein the first gate valve is arranged at the bottom of the cadmium oxide material inlet and is used for communicating the cadmium oxide material inlet with the inside of the kettle body.

In some embodiments, the reaction vessel further comprises a stirring mechanism for stirring the solution in the reaction vessel; the stirring mechanism comprises a stirring motor, a stirring shaft, an anchor blade and a paddle blade, and the stirring motor is arranged at the top of the kettle body; the stirring shaft extends into the kettle body and is connected with the stirring motor; the anchor type blade is U-shaped and is arranged at the bottom of the stirring shaft; the paddle blades are arranged on the stirring shaft and transversely extend relative to the stirring shaft, and are fixedly connected with the anchor type blades and form a cavity communicated with the inside of the kettle body with the stirring shaft.

In some embodiments, the reaction vessel further comprises a glass condenser, the glass condenser being in communication with the vessel body, the glass condenser being for condensing and recovering raw materials in the tail gas from the reaction of the vessel body.

In some embodiments, the cadmium oxide feeder includes a cadmium oxide material delivery portion, a support frame, and a roller; the cadmium oxide material conveying part is used for conveying cadmium oxide materials and enabling the conveyed cadmium oxide materials to be conveyed into the kettle body of the reaction kettle through the cadmium oxide material inlet; the supporting frame is fixedly connected with the cadmium oxide material conveying part from the lower part; the roller is arranged at the bottom of the supporting frame so that the cadmium oxide material conveying part and the supporting frame can move.

In some embodiments, the cadmium oxide material delivery portion includes a housing, a hopper, a discharge port, a motor, and a helical blade shaft; the hopper is arranged at one end of the shell, is positioned above the shell and is communicated with the interior of the shell and is used for adding cadmium oxide materials, and the discharge port is arranged at the other end of the shell and is communicated with a cadmium oxide material inlet of the reaction kettle; the motor is located outside the shell, the helical blade shaft is arranged in the shell, and one end of the helical blade shaft is connected to the motor so as to rotate in the shell and convey cadmium oxide materials to the discharge hole under the drive of the motor.

In some embodiments, the cadmium oxide material delivery portion includes a second gate valve disposed at a bottom of the hopper for opening and closing communication of the hopper with an interior of the housing.

In some embodiments, a viewing port is provided at the top of the hopper for viewing the cadmium oxide material within the hopper.

In some embodiments, the cadmium chloride solution preparation device further comprises an integrated temperature transmitter, wherein the integrated temperature transmitter passes through the kettle body of the reaction kettle in a sealing manner and enters the kettle body, and the other end of the integrated temperature transmitter is used for extending into the solution in the reaction kettle and detecting the temperature of the solution in the reaction kettle in real time.

In some embodiments, the cadmium chloride solution preparation apparatus further comprises a PLC control system communicatively coupled to the cadmium oxide feeder, the HCl supply line, the water supply line, and the cooling circulation system; the PLC control system is provided with an audible and visual alarm device for giving out audible and visual alarm to warn operators.

The beneficial effects of the present disclosure are as follows: the cadmium oxide feeder is used for conveying the cadmium oxide material into the reaction kettle through the cadmium oxide material inlet. The cadmium oxide feeder can be movably positioned at the kettle body of the reaction kettle. The cadmium oxide feeder can be movably positioned, so that the cadmium oxide feeder can be positioned in the kettle body of the reaction kettle for preparing the cadmium chloride solution when the cadmium oxide feeder is needed, and can be removed (further used for preparing other production lines) when the cadmium oxide feeder is not needed, thereby reducing the occupied area of a cadmium chloride solution preparation device and improving the use flexibility of the cadmium oxide feeder.

Drawings

Fig. 1 is a schematic diagram of a cadmium chloride solution preparation apparatus according to the present disclosure.

Wherein reference numerals are as follows:

100 cadmium chloride solution preparation device 22 support frame

1 reaction kettle 23 idler wheels

11 cauldron body 3HCl supply line

12 cadmium oxide material inlet 31HCl storage tank

13HCl solution inlet 32HCl supply pipeline

14 Water Inlet 33 Pump for HCl supply

15 jacket 34HCl supply flowmeter

16 first gate valve 35HCl supply solenoid valve

17 stirring mechanism 4 water supply line

171 agitator motor 41 water storage system

172 stirring shaft 42 water supply pipeline

173 anchor blade 43 water supply pump

Flowmeter for water supply of 174-paddle blade 44

175 cavity 45 water supply solenoid valve

18 glass condenser 5 cooling circulation system

2 cadmium oxide feeder 51 cooling tower

21 cadmium oxide material conveying part 52 water inlet pipeline

211 casing 53 return line

212 hopper 54 cooling circulating water pump

212a viewing port 55 third valve

213 outlet 56 fourth valve

214 motor 6 integrated temperature transmitter

215 helical blade shaft 7PLC control system

216 second gate valve

Detailed Description

The drawings illustrate embodiments of the present disclosure, and it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms and that, therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously practice the disclosure.

Referring to fig. 1, the cadmium chloride solution manufacturing apparatus 100 includes a reaction kettle 1, a cadmium oxide feeder 2, an HCl supply line 3, a water supply line 4, and a cooling circulation system 5.

The reaction kettle 1 is used for forming a cadmium chloride solution with water after the cadmium oxide reacts with HCl.

The reaction kettle 1 comprises a kettle body 11, a cadmium oxide material inlet 12, an HCl solution inlet 13, a water inlet 14 and a jacket 15. The kettle body 11 is used for the cadmium oxide material fed into the kettle body to react with HCl to form cadmium chloride, and the formed cadmium chloride and water form a cadmium chloride solution. The kettle body 11 can be an enamel kettle. The cadmium oxide material inlet 12 is communicated with the kettle body 11, and the cadmium oxide material is added into the kettle body 11 through the cadmium oxide material inlet 12. The cadmium oxide feed inlet 12 can be funnel-shaped or any other shape suitable for feeding a cadmium oxide feed. The HCl solution inlet 13 is communicated with the kettle body 11, and HCl solution is added into the kettle body 11 through the HCl solution inlet 13. The water inlet 14 is communicated with the kettle body 11, and water is added into the kettle body 11 through the water inlet 14. The jacket 15 surrounds the reaction vessel 1 from the outside.

When the cadmium oxide material inlet 12 is funnel-shaped, the reaction kettle 1 can further comprise a first gate valve 16. The first gate valve 16 is arranged at the bottom of the cadmium oxide material inlet 12 and is used for opening and closing the communication between the cadmium oxide material inlet 12 and the inside of the kettle body 11. The first gate valve 16 may be made of polytetrafluoroethylene or any other material having good corrosion resistance.

The reaction vessel 1 may also include a stirring mechanism 17. The stirring mechanism 17 is used for stirring the solution in the kettle body 11, so that the solution is uniformly mixed, the full reaction is facilitated, and the reaction temperature is controlled.

Specifically, the stirring mechanism 17 includes a stirring motor 171, a stirring shaft 172, an anchor blade 173, and a paddle blade 174. The stirring motor 171 is provided at the top of the tank body 11. The stirring motor 171 may be communicatively connected to a PLC control system 7 described later. The rotating speed of the stirring motor 171 is controlled by the PLC control system 7 to adapt to the stirring strength requirement and improve the automation level of the cadmium chloride solution preparation device 100. The stirring shaft 172 extends into the kettle body 11 and is connected to the stirring motor 171. The anchor blade 173 is U-shaped and is mounted to the bottom of the stirring shaft 172. The paddle blades 174 are mounted on the stirring shaft 172 and extend transversely to the stirring shaft 172, and the paddle blades 174 are fixedly connected to the anchor blades 173 and form a cavity 175 with the stirring shaft 172 communicating with the inside of the tank 11. As shown in fig. 1, the paddle blades 174 may extend laterally downward relative to the stirring shaft 172. By combining the anchor blade 173 and the paddle blade 174, the anchor frame type stirrer is formed, so that the shearing force along the inner wall surface of the kettle body 11 during rotation can be increased, the settlement of cadmium telluride powder in the kettle body 11 and the adhesion of the inner wall surface are prevented, and the sufficiency of the reaction between cadmium oxide and HCl and the uniformity of the formed cadmium chloride solution are improved. The paddle blades 174 and the anchor blades 173 form a double-layer stirring effect in the up-down direction, and the anchor blades 173 and the stirring shaft 172 form three stirring positions in the left-right direction, thereby enhancing the stirring effect as a whole, and particularly, the paddle blades 174 extend laterally downward (i.e., obliquely downward) with respect to the stirring shaft 172, further enhancing the stirring effect of forming the double-layer stirring in the up-down direction and the three stirring positions formed in the left-right direction.

The reactor may also include a glass condenser 18. The glass condenser 18 is communicated with the kettle body 11, and the glass condenser 18 is used for condensing and recycling raw materials in tail gas from the reaction of the kettle body 11, so that the cost is saved.

The cadmium oxide feeder 2 is used for conveying cadmium oxide materials into the reaction kettle 1 through a cadmium oxide material inlet 12. The cadmium oxide feeder 2 is movably positioned at the kettle body 11 of the reaction kettle 1. The cadmium oxide feeder 2 can be movably positioned, so that the cadmium oxide feeder 2 can be positioned in the kettle body 11 of the reaction kettle 1 for preparing the cadmium chloride solution when the cadmium oxide feeder 2 is needed, and the cadmium oxide feeder 2 can be removed (further used for preparing other production lines) when the cadmium oxide feeder 2 is not needed, thereby reducing the occupied area of the cadmium chloride solution preparing device 100 and improving the use flexibility of the cadmium oxide feeder 2.

The cadmium oxide material is preferably cadmium oxide powder to increase the reaction speed of the cadmium oxide and HCl solution.

As shown in fig. 1, the cadmium oxide feeder 2 includes a cadmium oxide material conveying portion 21, a support frame 22, and a roller 23.

The cadmium oxide material conveying part 21 is used for conveying cadmium oxide materials and conveying the conveyed cadmium oxide materials into the kettle body 11 of the reaction kettle 1 through the cadmium oxide material inlet 12. The cadmium oxide material conveying portion 21 may be selected from a belt conveyor, a vibrating conveyor, a conveying chute, or the like, and the cadmium oxide material conveying portion 21 of the present disclosure is preferably a screw feeder.

Specifically, the cadmium oxide material conveying portion 21 includes a housing 211, a hopper 212, a discharge port 213, a motor 214, and a screw blade shaft 215.

The hopper 212 is arranged at one end of the shell 211, is positioned above the shell 211 and is communicated with the interior of the shell 211, and is used for adding cadmium oxide materials. A pair of flip covers can be arranged at the top of the hopper 212 in a sealing way for opening and closing the hopper 212 so as to prevent cadmium oxide powder entering the hopper 212 from escaping, thereby causing the inhaled cadmium oxide powder to harm human health. The height of the hopper 212 is preferably 0.6m to facilitate manual discharging.

The top of the hopper 212 can be provided with a viewing port 212a for viewing the cadmium oxide material within the hopper 212. Viewing port 212a may be provided on one of the flaps. The viewing port 212a preferably has a diameter of 200mm. The viewing port 212a is made of a transparent material, so as to facilitate direct viewing from the outside, and any suitable material, such as glass, acrylic plate, etc., may be used as the transparent material.

The discharge hole 213 is arranged at the other end of the shell 211 and is communicated with the cadmium oxide material inlet 12 of the reaction kettle 1, and is used for enabling the cadmium oxide material to freely fall into the cadmium oxide material inlet 12 along the gravity direction.

The motor 214 is located outside the housing 211. The motor 214 is preferably a variable frequency motor. The rotation speed of the motor 214 can be adjusted by adjusting the frequency of the motor 214, so that the feeding speed of the helical blade shaft 215 driven by the motor 214 is changed to meet the actual production requirement. The motor 214 can be connected to the PLC control system 7 described later in a communication manner, so that the automation level is improved, the labor is saved, and the labor intensity of workers is reduced.

A screw blade shaft 215 is provided in the housing 211, and one end of the screw blade shaft 215 is connected to the motor 214 to rotate in the housing 211 and convey the cadmium oxide material to the discharge port 213 by the driving of the motor 214. The helical blade shaft 215 may be of TA1 titanium alloy or any other material having good corrosion resistance.

The cadmium oxide material delivery portion 21 can also include a second gate valve 216. A second gate valve 216 is provided at the bottom of the hopper 212 for opening and closing communication between the hopper 212 and the inside of the housing 211. The second gate valve 216 may be made of polytetrafluoroethylene, or any other material with good corrosion resistance.

The supporting frame 22 is fixedly connected to the cadmium oxide material conveying part 21 from below. As shown in the figure, the support frame 22 is L-shaped, so that the cadmium oxide material conveying part 21 is supported to be inclined, and the spiral blade shaft 215 is inclined, and compared with a horizontal screw conveyor in the prior art, the length of the spiral blade shaft 215 can be longer so as to meet the requirement of preparing a larger volume of cadmium chloride solution by the kettle body 11 with a larger capacity.

The roller 23 is arranged at the bottom of the supporting frame 22, so that the cadmium oxide material conveying part 21 and the supporting frame 22 can move, and the cadmium oxide feeder 2 can be movably positioned at the kettle body 11 of the reaction kettle 1. A well-known stop structure can be arranged at the roller 23, so that the stop structure stops the rotation of the roller 23 after the cadmium oxide material conveying part 21 and the supporting frame 22 are moved to a specified position, thereby realizing the positioning of the cadmium oxide feeder 2.

The HCl supply line 3 is used to supply HCl solution into the reaction kettle 1 via an HCl solution inlet 13.

Specifically, the HCl supply line 3 includes an HCl tank 31, an HCl supply line 32, an HCl supply pump 33, an HCl supply flow meter 34, and an HCl supply solenoid valve 35.

The HCl tank 31 is used to store HCl solution.

The HCl supply line 32 is connected between the HCl tank 31 and the HCl solution inlet 13 of the reaction vessel 1, and is used for inputting the HCl solution into the vessel body 11 of the reaction vessel 1.

The HCl supply pump 33 is provided to the HCl supply pipe 32 for pumping the HCl solution in the HCl tank 31 to the reaction kettle 1 via the HCl supply pipe 32. The HCl supply pump 33 is communicably connected to a PLC control system 7 described later to control the flow rate and start/stop of the supply of HCl solution, thereby improving the automation level.

The HCl supply flow meter 34 is provided in the HCl supply line 32, and the HCl supply flow meter 34 is configured to measure the flow rate of the HCl solution in the HCl supply line 32. Similarly, the HCl supply flow meter 34 may be communicatively connected to the PLC control system 7, and communicate the measured flow rate value of the HCl solution to the PLC control system 7, thereby improving the automation control level.

An HCl supply solenoid valve 35 is provided to the HCl supply pipe 32 downstream of the HCl supply pump 33, and the HCl supply solenoid valve 35 is used to open or close the HCl supply pipe 32. Similarly, the HCl supply solenoid valve 35 can be communicatively connected to a PLC control system 7 described later, and the automation control level can be improved.

The water supply line 4 is used to supply water into the reaction kettle 1 via a water inlet 14.

Specifically, the water supply line 4 includes a water storage system 41, a water supply pipe 42, a water supply pump 43, a water supply flowmeter 44, and a water supply solenoid valve 45.

The water storage system 41 is used for storing water.

A water supply line 42 is connected between the water storage system 41 and the HCl water inlet 14 of the reaction kettle 1 for supplying water into the kettle body 11 of the reaction kettle 1.

The water supply pump 43 is provided in the water supply pipe 42, and pumps the water storage system 41 to the reaction kettle 1 through the water supply pipe 42. Likewise, the water supply pump 43 may be communicatively connected to a PLC control system 7 described later to control the flow rate and start/stop of water supply, thereby improving the automation level.

A water supply flow meter 44 is provided in the water supply pipe 42, and the water supply flow meter 44 measures the flow rate of water in the water supply pipe 42. Similarly, the water supply flowmeter 44 is communicably connected to a PLC control system 7 described later, and communicates a measured flow rate value of water to the PLC control system 7 to improve the automation control level.

The water supply solenoid valve 45 is provided in the water supply line 42, and the water supply solenoid valve 45 opens or closes the water supply line 42. Likewise, the water supply solenoid valve 45 may be communicatively connected to the PLC control system 7 to increase the level of automation control.

The cooling circulation system 5 is used for circulating a cooling medium into the jacket 15 so as to cool the solution in the kettle body 11 of the reaction kettle 1.

Specifically, the cooling circulation system 5 includes a cooling tower 51, a water intake pipe 52, a water return pipe 53, and a cooling circulation water pump 54. The cooling tower 51, the water inlet pipeline 52, the jacket 12 and the water return pipeline 53 are sequentially connected to form a circulating pipeline. A water inlet line 52 connects the cooling tower 51 to the jacket 12 for feeding cold water from the cooling tower 51 into the jacket 12. A water return line 53 connects the cooling tower 51 to the jacket 12 for feeding hot water from the jacket 12 into the cooling tower 51. The cooling circulation water pump 54 is arranged on the water return pipeline 53, and the cooling circulation water pump 54 is used for providing power for the circulation flow of water in the circulation pipeline. Likewise, the cooling circulation water pump 54 may be communicatively connected to a PLC control system 7 described later to control the flow rate of the supply of the circulating water and start and stop, thereby improving the automation level.

The cooling circulation system 5 further comprises a third valve 55 and a fourth valve 56. The third valve 55 is disposed on the water inlet pipe 52, and the third valve 55 is used for opening or closing the water inlet pipe 52. A fourth valve 56 is provided in the return water line 53, and the fourth valve 56 is used to open or close the return water line 53. Likewise, the third valve 55 and the fourth valve 56 can be communicatively connected to the PLC control system 7 to be described later, to improve the automation level

A cooling tower fan (not shown) is provided in the cooling tower 51 for cooling the hot water flowing into the cooling tower 51.

Referring to FIG. 1, the cadmium chloride solution manufacturing device 100 also includes an integral temperature transmitter 6. The integrated temperature transmitter 6 passes through the kettle body 11 of the reaction kettle 1 in a sealing way and enters the kettle body 11, and the other end of the integrated temperature transmitter 6 is used for extending into the solution in the reaction kettle 1 and detecting the temperature of the solution in the reaction kettle 1 in real time.

Referring to fig. 1, the cadmium chloride solution manufacturing apparatus 100 further includes a PLC control system 7. The PLC control system 7 is in communication connection with the cadmium oxide feeder 2, the HCl supply line 3, the water supply line 4 and the cooling circulation system 5. Specifically, the PLC control system 7 is provided with a cadmium oxide feeder control panel (not shown), an HCl supply line control panel (not shown), a water supply line control panel (not shown), and a cooling circulation system control panel (not shown) to display and control the cadmium oxide feeder 2, the HCl supply line 3, the water supply line 4, and the cooling circulation system 5, respectively.

The cadmium oxide feeder control panel is provided with the feeding rate and the feeding amount of the cadmium oxide material, the cadmium oxide material is poured into the hopper 212, the second gate valve 216 at the bottom of the cadmium oxide material is opened, the flip at the top is closed, and the motor 214 is started to feed the cadmium oxide material into the reaction kettle 1 through the cadmium oxide feeder 2.

The HCl supply line control panel is provided with the HCl solution feeding rate and the HCl supply amount, the HCl supply pump 33 is started, HCl in the HCl storage tank 31 is conveyed into the kettle body 11 of the reaction kettle 1, the HCl supply flow meter 34 measures the HCl supply flow rate and feeds back to the PLC control system 7 in a communication manner, and when the set feed amount is reached, the HCl supply pump 33 is automatically stopped and the HCl supply electromagnetic valve 35 is closed.

The water supply line control panel is provided with a water feeding rate and a water feeding amount, a water supply pump 43 is started to convey the water in the water supply line 4 into the kettle body 11 of the reaction kettle 1, a water supply flowmeter 44 measures the feeding amount of pure water, the feeding amount is communicated and fed back to the PLC control system 7, and when the set feeding amount is reached, the water supply pump 43 is automatically stopped and a water supply electromagnetic valve 45 is closed.

The stirring motor 171 is started to operate on the PLC control system 7, and the stirring speed can be adjusted by adjusting the frequency of the stirring motor 171, so that the water and the HCl added into the kettle body 11 of the reaction kettle 1 are uniformly mixed to reach the HCl concentration required by the reaction. The stirring motor 171 is kept running, and the added cadmium oxide material and HCl in the kettle are subjected to chlorination reaction to generate cadmium chloride through stirring, and heat is released in the reaction process.

The control panel of the cooling circulation system can set relevant process temperature parameters to correspondingly start and stop the operation of the cooling tower fan and the cooling circulation water pump 54, and when the real-time detection temperature of the integrated temperature transmitter 6 reaches the corresponding process temperature value, the start and stop of the cooling tower fan and the cooling circulation water pump 54 can be realized, so that the effect of cooling the solution in the kettle body 11 of the reaction kettle 1 is achieved.

The dissolution temperature is controlled by the adding rate of the cadmium oxide material, the temperature is controlled to be less than 70 ℃, the temperature of the solution in the kettle body 11 is detected in real time by the integrated temperature transmitter 6, and signals are transmitted to the PLC control system 7, and when the temperature reaches 60 ℃, the PLC control system 7 cuts off the power supply of the motor 214 to stop feeding. Meanwhile, the PLC control system 7 starts the cooling circulating water pump 54 to convey cooling water to the jacket 12 of the reaction kettle 1 to cool the solution in the kettle body 11.

When the temperature of the solution in the kettle body 11 is lower than 50 ℃, the PLC control system 7 continuously adds cadmium oxide materials into the kettle body 11 from the starting motor 214, and keeps the operation of the cooling circulating water pump 54 and the stirring motor 171 during the period, so that the temperature of the solution in the kettle body 11 is between 50 and 60 ℃ until the chlorination reaction of the cadmium oxide materials is finished.

The PLC control system 7 may also be provided with an audible and visual alarm (not shown) for sounding an audible and visual alarm to alert the operator. The alarm temperature value of the audible and visual alarm device is set to be 70 ℃, when the real-time detection temperature of the integrated temperature transmitter 6 reaches 70 ℃, the audible and visual alarm device of the PLC control system 7 immediately cuts off the power supply of the stirring motor 171 and the motor 214 of the cadmium oxide material conveying part 21, so that the stirring and the feeding suspension are stopped in the kettle body 11, and an audible and visual alarm warning operator can timely handle the condition of overhigh temperature.

The above detailed description describes various exemplary embodiments, but is not intended to be limited to the combinations explicitly disclosed herein. Thus, unless otherwise indicated, the various features disclosed herein may be combined together to form a number of additional combinations that are not shown for the sake of brevity.

Claims (10)

1. A cadmium chloride solution preparation device (100) comprises a reaction kettle (1), a cadmium oxide feeder (2), an HCl supply line (3), a water supply line (4) and a cooling circulation system (5),

the reaction kettle (1) comprises a kettle body (11), a cadmium oxide material inlet (12), an HCl solution inlet (13), a water inlet (14) and a jacket (15), wherein the cadmium oxide material inlet (12), the HCl solution inlet (13) and the water inlet (14) are communicated with the kettle body (11), the jacket (15) surrounds the reaction kettle (1) from the outside, the kettle body (11) is used for enabling cadmium oxide materials fed into the kettle body to react with HCl to form cadmium chloride, and the formed cadmium chloride and water form a cadmium chloride solution;

the cadmium oxide feeder (2) is used for conveying cadmium oxide materials into the reaction kettle (1) through a cadmium oxide material inlet (12);

the HCl supply line (3) is used for supplying HCl solution into the reaction kettle (1) through the HCl solution inlet (13);

a water supply line (4) for supplying water into the reaction kettle (1) via a water inlet (14);

the cooling circulation system (5) is used for circulating a cooling medium into the jacket (15) so as to cool the reaction kettle (1);

it is characterized in that the method comprises the steps of,

the cadmium oxide feeder (2) can be movably positioned at the kettle body (11) of the reaction kettle (1).

2. The cadmium chloride solution manufacturing apparatus (100) according to claim 1, wherein,

the cadmium oxide material inlet (12) is funnel-shaped,

the reaction kettle (1) further comprises a first gate valve (16), wherein the first gate valve (16) is arranged at the bottom of the cadmium oxide material inlet (12) and is used for communicating the cadmium oxide material inlet (12) with the inside of the kettle body (11).

3. The cadmium chloride solution manufacturing apparatus (100) according to claim 1, wherein,

the reaction kettle (1) further comprises a stirring mechanism (17), and the stirring mechanism (17) is used for stirring the solution in the reaction kettle (1);

the stirring mechanism (17) comprises a stirring motor (171), a stirring shaft (172), anchor blades (173) and paddle blades (174),

the stirring motor (171) is arranged at the top of the kettle body (11);

the stirring shaft (172) stretches into the kettle body (11) and is connected with the stirring motor (171);

the anchor type blade (173) is U-shaped and is arranged at the bottom of the stirring shaft (172);

the paddle blades (174) are arranged on the stirring shaft (172) and transversely extend relative to the stirring shaft (172), and the paddle blades (174) are fixedly connected with the anchor blades (173) and form a cavity (175) communicated with the inside of the kettle body (11) with the stirring shaft (172).

4. The cadmium chloride solution manufacturing apparatus (100) according to claim 1, wherein,

the reaction kettle also comprises a glass condenser (18), the glass condenser (18) is communicated with the kettle body (11), and the glass condenser (18) is used for condensing and recycling raw materials in tail gas from the reaction of the kettle body (11).

5. The cadmium chloride solution manufacturing apparatus (100) according to claim 1, wherein,

the cadmium oxide feeder (2) comprises a cadmium oxide material conveying part (21), a supporting frame (22) and a roller (23);

the cadmium oxide material conveying part (21) is used for conveying cadmium oxide materials and enabling the conveyed cadmium oxide materials to be conveyed into the kettle body (11) of the reaction kettle (1) through the cadmium oxide material inlet (12);

the supporting frame (22) is fixedly connected with the cadmium oxide material conveying part (21) from the lower part;

the roller (23) is arranged at the bottom of the supporting frame (22) so that the cadmium oxide material conveying part (21) and the supporting frame (22) can move.

6. The apparatus (100) for preparing a cadmium chloride solution according to claim 5,

the cadmium oxide material conveying part (21) comprises a shell (211), a hopper (212), a discharge hole (213), a motor (214) and a helical blade shaft (215);

the hopper (212) is arranged at one end of the shell (211), is positioned above the shell (211) and is communicated with the inside of the shell (211) for adding cadmium oxide materials,

the discharge hole (213) is arranged at the other end of the shell (211) and is communicated with the cadmium oxide material inlet (12) of the reaction kettle (1);

the motor (214) is positioned outside the shell (211),

the spiral blade shaft (215) is arranged in the shell (211), and one end of the spiral blade shaft (215) is connected with the motor (214) so as to rotate in the shell (211) and convey cadmium oxide materials to the discharge hole (213) under the driving of the motor (214).

7. The apparatus (100) for preparing a cadmium chloride solution according to claim 5,

the cadmium oxide material conveying part (21) comprises a second gate valve (216), wherein the second gate valve (216) is arranged at the bottom of the hopper (212) and is used for communicating the hopper (212) with the inside of the shell (211).

8. The apparatus (100) for preparing a cadmium chloride solution according to claim 6, wherein,

the top of the hopper (212) is provided with an observation opening (212 a) for observing cadmium oxide materials in the hopper (212).

9. The cadmium chloride solution manufacturing apparatus (100) according to claim 1, wherein,

the cadmium chloride solution preparation device (100) also comprises an integrated temperature transmitter (6),

the integrated temperature transmitter (6) passes through the kettle body (11) of the reaction kettle (1) in a sealing manner and enters the kettle body (11), and the other end of the integrated temperature transmitter (6) is used for extending into the solution in the reaction kettle (1) and detecting the temperature of the solution in the reaction kettle (1) in real time.

10. The cadmium chloride solution manufacturing apparatus (100) according to claim 1, wherein,

the cadmium chloride solution preparation device (100) further comprises a PLC control system (7), wherein the PLC control system (7) is in communication connection with the cadmium oxide feeder (2), the HCl supply line (3), the water supply line (4) and the cooling circulation system (5); the PLC control system (7) is provided with an audible and visual alarm device for giving out audible and visual alarm to warn operators.

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