High-temperature and high-pressure sampling device for cyanide-containing wastewater

Abstract

The utility model discloses a cyanide-containing wastewater high-temperature high-pressure sampling device which comprises a feeding pipeline, a cooling device, a discharging pipeline and a sampling pipe, one end of the feeding pipeline is connected with a plurality of liquid taking pipeline groups, and the other end of the feeding pipeline is communicated and connected with an inlet of the cooling device; one end of the liquid taking pipeline group is used for introducing cyanide-containing wastewater, and the other end is communicated and connected with the feeding pipeline; one end of the discharge pipeline is communicated with the outlet of the cooling device, and the other end is communicated with the waste liquid tank; a sampling pipe communicated with the discharging pipeline is arranged on the discharging pipeline, one end of the sampling pipe is communicated with the discharging pipeline, and the other end of the sampling pipe is assembled and connected with a hard sealing gate valve; a sampling stop valve is connected to a position, between the sampling pipe and the waste liquid tank, on the discharging pipeline. The utility model has the beneficial effects that the safety is improved, the leakage of waste water and the injury to operators are effectively avoided, and the risks of personnel poisoning, scalding and environmental pollution are reduced. Efficient sampling is realized, and the accuracy and effectiveness of a sampling result are ensured.

Description

Technical Field

[0001] The utility model relates to the chemical industry field, and particularly relates to a high-temperature and high-pressure sampling device for cyanide-containing wastewater. Background Art

[0002] Cyanide destruction treatment usually adopts the high-temperature and high-pressure method. However, under the high-temperature and high-pressure conditions, the temperature and pressure in the kettle and the corresponding pipelines are relatively high, and there are great risks in the sampling operation, which is likely to cause material splashing. If the protective measures are improper, it may cause personnel poisoning and scalding, and there are relatively large potential safety hazards.

[0003] When facing these high-temperature and high-pressure cyanide-containing wastewater, the traditional sampling methods have many problems, such as complex operation, inaccurate sampling, and potential safety hazards. These problems not only affect the wastewater treatment effect, but also may cause environmental pollution and personnel injuries. Therefore, it is of great practical significance to develop a device that can sample safely, efficiently, and accurately under high-temperature and high-pressure conditions.

[0004] In the prior art, the sampling devices for cyanide-containing wastewater mostly adopt simple sampling pipes and valves, which cannot meet the sampling requirements under high-temperature and high-pressure conditions. In addition, the deficiency of the cooling system also makes it difficult to effectively control the wastewater temperature, increasing the risks in the sampling process. To solve these problems, developing an efficient sampling device integrating multi-layer valve control, cooling system, and remote monitoring functions can greatly improve the safety, accuracy, and management efficiency of the sampling process. Summary of the Invention

[0005] To solve the above technical problems, the utility model provides a high-temperature and high-pressure sampling device for cyanide-containing wastewater.

[0006] The utility model is realized through the following technical solutions:

[0007] A high-temperature and high-pressure sampling device for cyanide-containing wastewater of the utility model includes a feed pipeline, a cooling device, a discharge pipeline and a sampling pipe. One end of the feed pipeline is connected with a plurality of liquid extraction pipeline groups, and the other end is connected to the inlet of the cooling device; one end of the liquid extraction pipeline group is used to introduce cyanide-containing wastewater, and the other end is connected to the feed pipeline; one end of the discharge pipeline is connected to the outlet of the cooling device, and the other end is connected to a waste liquid tank; a sampling pipe communicating with it is arranged on the discharge pipeline, one end of the sampling pipe is connected to the discharge pipeline, and the other end is equipped with a hard-sealed gate valve; a sampling stop valve is connected at a position between the sampling pipe and the waste liquid tank on the discharge pipeline. Among them, the cyanide-containing wastewater enters the system through the liquid extraction pipeline group. A plurality of liquid extraction pipelines in the liquid extraction pipeline group are used to process cyanide-containing wastewater from different sources or with different properties respectively. The feed pipeline transports the cyanide-containing wastewater to the cooling device, and the cooling device is used to reduce the temperature of the wastewater for subsequent treatment and sampling. The cooled wastewater is discharged through the discharge pipeline and finally enters the waste liquid tank for collection for subsequent treatment. The sampling pipe is connected to the discharge pipeline, allowing the wastewater to be sampled at any time. The hard-sealed gate valve ensures the tightness and safety during the sampling process, while the sampling stop valve is used to control the start and stop of sampling to prevent the cyanide-containing wastewater from directly entering the waste liquid tank during sampling.

[0008] Further, the liquid extraction pipeline group includes a wastewater discharge pipe and a liquid extraction branch pipe; one end of the wastewater discharge pipe is used to introduce cyanide-containing wastewater, and the other end is equipped with a discharge gate valve. A main gate valve is also arranged on the pipeline of the wastewater discharge pipe. One end of the liquid extraction branch pipe is connected to the wastewater discharge pipe, and the connection position is between the main gate valve and the discharge gate valve. The other end of the liquid extraction branch pipe is connected to the feed pipeline; a flow regulating valve and a hard-sealed gate valve are equipped on the liquid extraction branch pipe. In the liquid extraction pipeline group, the wastewater discharge pipe is used for normal liquid discharge when no sampling operation is required. Usually, when no sampling is needed, both the discharge gate valve and the main gate valve are kept open, and the wastewater can be discharged smoothly through the wastewater discharge pipe. When a sampling operation is required, the main gate valve remains open and the discharge gate valve is closed, and the wastewater then enters the feed pipeline through the liquid extraction branch pipe. The flow regulating valve on the liquid extraction branch pipe is used to precisely control the wastewater flow, while the hard-sealed gate valve ensures the tightness of the pipeline and prevents leakage.

[0009] Further, temperature sensors are respectively installed at the connection positions of the feed pipeline and the discharge pipeline with the cooling device. The temperature sensors are installed at the connection positions of the feed pipeline and the discharge pipeline with the cooling device to monitor the temperature of the wastewater when it enters and leaves the cooling device in real time. Through these temperature sensors, the effective operation of the cooling device can be ensured, abnormal temperature changes can be detected and processed in time, and the stability and safety of the entire sampling device can be guaranteed.

[0010] Further, the above cooling device includes a cooling tank, a titanium spiral inner coil, a refrigerant inlet, a refrigerant outlet, a drain port and a vent port; the above titanium spiral inner coil is arranged inside the cooling tank; the above feed pipe penetrates into the internal cavity of the cooling tank from the outside and is connected to the inlet of the titanium spiral inner coil in a communicating manner; the above discharge pipe penetrates into the internal cavity of the cooling tank from the outside and is connected to the outlet of the titanium spiral inner coil in a communicating manner; the refrigerant inlet is arranged on the tank body of the cooling tank, the refrigerant outlet and the vent port are arranged at the top, the drain port is arranged at the bottom, and a hard-sealed gate valve is assembled and connected to the drain port; the above refrigerant inlet and refrigerant outlet are respectively connected to the refrigerant source in a communicating manner to form a circulation loop. The core of the cooling device is the cooling tank, which is internally equipped with a titanium spiral inner coil. The titanium spiral inner coil has excellent corrosion resistance and heat conduction performance, ensuring the cooling effect and the service life of the equipment. The feed pipe introduces the wastewater into the cooling tank and is connected to the titanium spiral inner coil, enabling the wastewater to flow inside the coil and be cooled. The discharge pipe then takes out the cooled wastewater from the cooling tank. The refrigerant inlet and refrigerant outlet form a refrigerant circulation system, and the heat in the wastewater is carried away through the flow of the refrigerant. The vent port and the drain port are used to discharge the gases generated during the cooling process and the used refrigerant, and the hard-sealed gate valve ensures the sealing of these outlets.

[0011] Further, a liquid level gauge is assembled and connected to the tank body of the above waste liquid tank; a waste liquid discharge pipe is assembled and connected to the tank body of the above waste liquid tank, and a hard-sealed gate valve is assembled and connected to the end of the waste liquid discharge pipe. The waste liquid tank is used to collect the wastewater discharged by the cooling device. A liquid level gauge is installed on its tank body, which can monitor the liquid level of the waste liquid in real time to prevent the tank from overflowing due to being overfilled. The waste liquid discharge pipe is used to safely discharge the waste liquid from the tank body, and the hard-sealed gate valve at the end ensures the sealing and safety during the discharge process.

[0012] Further, the above liquid level gauge and temperature sensor are respectively connected to the remote monitoring system in a communication manner. The liquid level gauge and the temperature sensor are connected to the remote monitoring system to realize the real-time monitoring of the liquid level of the waste liquid tank and the inlet and outlet water temperatures of the cooling device. Through the remote monitoring system, the operation status of the equipment can be understood in real time at the control center, data analysis and fault warning can be carried out, and the safety and management efficiency of the system can be improved.

[0013] Further, at a position on the above-mentioned waste water discharge pipe between the connection of the liquid extraction branch pipe and the main gate valve, a spare discharge pipe is connected in communication; one end of the above-mentioned spare discharge pipe is connected in communication with the waste water discharge pipe, and the other end is equipped with a hard-sealed gate valve. The spare discharge pipe is arranged on the waste water discharge pipe and is used to provide an additional discharge channel when needed. It is connected at a position between the liquid extraction branch pipe and the main gate valve, and the outflow of waste water is controlled by the hard-sealed gate valve. When the system is operating normally and no spare channel is required, the spare discharge pipe is in a closed state. The existence of the spare discharge pipe improves the flexibility of the system, and can provide a spare discharge path when the main channel fails or needs maintenance, ensuring the continuous operation of the system.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Improve safety: Through the use of multi-layer valve control and cooling devices, effectively avoid the leakage of waste water and harm to operators, reducing the risks of personnel poisoning, scalding and environmental pollution.

[0016] Achieve efficient sampling: The sampling process is scientific and reasonable, ensuring that accurate sampling can be carried out for waste water under high temperature and high pressure conditions, guaranteeing the accuracy and effectiveness of the sampling results.

[0017] Enhance the automation and remote monitoring capabilities: The liquid level gauge and temperature sensor monitor the liquid level of the waste liquid tank and the inlet and outlet water temperatures of the cooling device in real time. Combined with the remote monitoring system, realize the real-time monitoring, data analysis and fault warning of the equipment operation status, improving the safety and management efficiency of the system.

[0018] Enhance flexibility and emergency handling capabilities: The system is reasonably designed. Through configurations such as the spare discharge pipe, the flexibility and emergency handling capabilities of the system are enhanced, ensuring that it can respond quickly in special situations and guaranteeing the continuity and safety of the system operation.

[0019] Facilitate maintenance and management: Through the remote monitoring system, operators can understand the equipment operation status in real time, which is convenient for trend analysis and fault prevention, improving the maintenance efficiency and management level of the system. At the same time, the archiving and analysis of historical data provide reliable data support for the long-term maintenance and management of the equipment.

[0020] Optimize the operation process: Through the scientific sampling operation process and cooling system, ensure the control of the temperature and flow rate of waste water before and after sampling, avoid the potential hazards of high-temperature waste water to equipment and personnel, optimize the operation process, and improve work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : Schematic structural diagram of the present utility model;

[0022] Figure 2: Structural schematic sectional view of the present utility model;

[0023] Figure 3 : Three-dimensional structural sectional view of the present utility model;

[0024] Figure 4 : Three-dimensional structural schematic diagram of the feeding pipeline, discharging pipeline and sampling pipe of the present utility model;

[0025] Figure 5 : Structural schematic diagram of the liquid extraction pipeline group of the present utility model;

[0026] Figure 6 : Three-dimensional structural schematic diagram of the liquid extraction pipeline group of the present utility model;

[0027] In the figure: 1 - liquid extraction pipeline group, 2 - feeding pipeline, 3 - cooling device, 4 - discharging pipeline, 5 - sampling pipe, 6 - sampling stop valve, 7 - waste liquid tank, 8 - temperature sensor, 11 - waste water discharging pipe, 12 - liquid extraction branch pipe, 13 - spare discharging pipe, 31 - cooling tank, 32 - titanium spiral inner coil pipe, 33 - refrigerant inlet, 34 - refrigerant outlet, 35 - drainage port, 36 - exhaust port, 71 - liquid level gauge, 72 - waste liquid discharge pipe. Detailed implementation manners

[0028] The following further describes the present utility model in conjunction with the accompanying drawings and detailed implementation manners:

[0029] Embodiment: As Figures 1-6As shown in the figure, a high-temperature and high-pressure sampling device for cyanide-containing wastewater includes a feed pipeline 2, a cooling device 3, a discharge pipeline 4, and a sampling pipe 5. One end of the feed pipeline 2 is connected to a number of liquid extraction pipeline groups 1, and the other end is connected to the inlet of the cooling device 3 in a communicating manner; one end of the liquid extraction pipeline group 1 is used to introduce cyanide-containing wastewater, and the other end is connected to the feed pipeline 2 in a communicating manner; one end of the discharge pipeline 4 is connected to the outlet of the cooling device 3 in a communicating manner, and the other end is connected to a waste liquid tank 7 in a communicating manner; a sampling pipe 5 communicating with it is provided on the discharge pipeline 4. One end of the sampling pipe 5 is connected to the discharge pipeline 4 in a communicating manner, and the other end is equipped with a hard-sealed gate valve; at the position between the sampling pipe 5 and the waste liquid tank 7 on the discharge pipeline 4, a sampling stop valve 6 is connected. Among them, the cyanide-containing wastewater enters the system through the liquid extraction pipeline group 1. The several liquid extraction pipelines in the liquid extraction pipeline group 1 are used to separately treat cyanide-containing wastewater from different sources or with different properties. The feed pipeline 2 transports the cyanide-containing wastewater to the cooling device 3, and the cooling device 3 is used to reduce the temperature of the wastewater to facilitate subsequent treatment and sampling. The cooled wastewater is discharged through the discharge pipeline 4 and finally enters the waste liquid tank 7 for collection for subsequent treatment. The sampling pipe 5 is connected to the discharge pipeline 4, allowing the wastewater to be sampled at any time. The hard-sealed gate valve ensures the tightness and safety during the sampling process, while the sampling stop valve 6 is used to control the start and stop of sampling to prevent the cyanide-containing wastewater from directly entering the waste liquid tank during sampling.

[0030] The above liquid extraction pipeline group 1 includes a wastewater discharge pipe 11 and a liquid extraction branch pipe 12; one end of the wastewater discharge pipe 11 is used to introduce cyanide-containing wastewater, and the other end is equipped with a discharge gate valve. A main gate valve is also provided on the pipeline of the wastewater discharge pipe 11. One end of the liquid extraction branch pipe 12 is connected to the wastewater discharge pipe 11 in a communicating manner, and the connection position is between the main gate valve and the discharge gate valve. The other end of the liquid extraction branch pipe 12 is connected to the feed pipeline 2 in a communicating manner; a flow regulating valve and a hard-sealed gate valve are equipped on the liquid extraction branch pipe 12. In the liquid extraction pipeline group 1, the wastewater discharge pipe 11 is used for normal liquid discharge when no sampling operation is required. Usually, when no sampling is needed, both the discharge gate valve and the main gate valve are kept open, and the wastewater can pass through the wastewater discharge pipe 11 smoothly. When a sampling operation is required, the main gate valve remains open and the discharge gate valve is closed, and the wastewater then enters the feed pipeline 2 through the liquid extraction branch pipe 12. The flow regulating valve on the liquid extraction branch pipe 12 is used to precisely control the wastewater flow rate, while the hard-sealed gate valve ensures the tightness of the pipeline and prevents leakage.

[0031] Temperature sensors 8 are respectively installed at the connection points of the above-mentioned feed pipe 2 and discharge pipe 4 with the cooling device 3. The temperature sensors 8 are installed at the connection points of the feed pipe 2 and discharge pipe 4 with the cooling device 3, and are used to monitor the temperature of the wastewater when it enters and leaves the cooling device 3 in real time. Through these temperature sensors, the effective operation of the cooling device can be ensured, abnormal temperature changes can be detected and processed in a timely manner, and the stability and safety of the entire sampling device can be guaranteed.

[0032] The above-mentioned cooling device 3 includes a cooling tank 31, a titanium spiral inner coil 32, a refrigerant inlet 33, a refrigerant outlet 34, a drain port 35 and a vent port 36; the above-mentioned titanium spiral inner coil 32 is arranged inside the cooling tank 31; the above-mentioned feed pipe 2 penetrates into the internal cavity of the cooling tank 31 from the outside and is connected to the inlet of the titanium spiral inner coil 32 in a communicating manner; the above-mentioned discharge pipe 4 penetrates into the internal cavity of the cooling tank 31 from the outside and is connected to the outlet of the titanium spiral inner coil 32 in a communicating manner; a refrigerant inlet 33 is arranged on the tank body of the above-mentioned cooling tank 31, a refrigerant outlet 34 and a vent port 36 are arranged at the top, a drain port 35 is arranged at the bottom, and a hard-sealed gate valve is installed and connected to the drain port 35; the above-mentioned refrigerant inlet 33 and refrigerant outlet 34 are respectively connected to the refrigerant source in a communicating manner to form a circulation loop. The core of the cooling device 3 is the cooling tank 31, and a titanium spiral inner coil 32 is installed inside. The titanium spiral inner coil 32 has excellent corrosion resistance and heat conduction performance, ensuring the cooling effect and the service life of the equipment. The feed pipe 2 introduces the wastewater into the inside of the cooling tank 31 and is connected to the titanium spiral inner coil 32, so that the wastewater flows inside the coil and is cooled. The discharge pipe 4 then takes out the cooled wastewater from the cooling tank 31. The refrigerant inlet 33 and the refrigerant outlet 34 form a refrigerant circulation system, and the heat in the wastewater is taken away by the flow of the refrigerant. The vent port 36 and the drain port 35 are used to discharge the gas generated during the cooling process and the used refrigerant, and the hard-sealed gate valve ensures the sealing performance of these outlets.

[0033] A liquid level gauge 71 is installed and connected to the tank body of the above-mentioned waste liquid tank 7; a waste liquid discharge pipe 72 is installed and connected to the tank body of the above-mentioned waste liquid tank 7, and a hard-sealed gate valve is installed and connected to the end of the waste liquid discharge pipe 72. The waste liquid tank 7 is used to collect the wastewater discharged from the cooling device 3. A liquid level gauge 71 is installed on its tank body, which can monitor the liquid level of the waste liquid in real time to prevent the tank from overflowing due to being overfilled. The waste liquid discharge pipe 72 is used to safely discharge the waste liquid from the tank body, and the hard-sealed gate valve at the end ensures the sealing performance and safety during the discharge process.

[0034] The above-mentioned liquid level gauge 71 and temperature sensor 8 are respectively connected to the remote monitoring system in a communication manner. The liquid level gauge 71 and the temperature sensor 8 are connected to the remote monitoring system to realize the real-time monitoring of the liquid level of the waste liquid tank and the inlet and outlet water temperatures of the cooling device. Through the remote monitoring system, the operation status of the equipment can be understood in real time at the control center, data analysis and fault warning can be carried out, and the safety and management efficiency of the system can be improved.

[0035] The components and working principle of the above remote monitoring system are as follows:

[0036] The remote monitoring system mainly consists of the following components:

[0037] Sensor:

[0038] Liquid level sensor (liquid level gauge 71): It is used to monitor the liquid level of the waste liquid in the waste liquid tank in real time to ensure that the waste liquid does not exceed the safe range.

[0039] Temperature sensor 8: It is used to monitor the temperature of the inlet and outlet water of the cooling device in real time to ensure that the temperature of the wastewater is always controlled within the safe range during the treatment process.

[0040] Data acquisition module:

[0041] The data acquisition module is responsible for collecting real-time data from various sensors and converting it into digital signals for subsequent processing and analysis.

[0042] Communication module:

[0043] The communication module is responsible for transmitting the data collected by the data acquisition module to the central server or cloud platform of the remote monitoring system through a network (such as Wi-Fi, Ethernet, 4G / 5G, etc.).

[0044] Central processing unit:

[0045] The central processing unit is usually a computer system or server, which is responsible for receiving, storing and processing the data from each sensor, and performing data analysis and fault warning.

[0046] User interface (UI):

[0047] The user interface provides a graphical monitoring platform for operators or managers to view real-time data, alarm information and historical data records. The user interface can be a PC application, a mobile application or a web application.

[0048] Data storage system:

[0049] The data storage system is used to store historical data, support long-term data storage and call at any time for trend analysis and decision-making support.

[0050] Alarm system:

[0051] When an abnormal situation (such as too high liquid level or abnormal temperature) is detected, the alarm system will trigger the alarm mechanism to notify the operator to take corresponding measures. The alarm can be realized by means of sound, light or SMS / email notification, etc.

[0052] The working principle of the remote monitoring system can be summarized into the following steps:

[0053] Data collection:

[0054] The liquid level gauge 71 and the temperature sensor 8 continuously monitor the liquid level of the waste liquid tank and the inlet and outlet water temperatures of the cooling device, and collect these data in real time.

[0055] Data transmission:

[0056] The collected data is processed by the data acquisition module and sent to the central processing unit through the communication module. The transmission method can be wired or wireless, depending on the on-site environment and requirements.

[0057] Data processing and analysis:

[0058] The data received by the central processing unit is stored and analyzed in real time. The system determines whether the data is within the normal range according to the set thresholds and identifies potential faults or abnormal situations.

[0059] User interface display:

[0060] Through the user interface, operators and managers can view the operating status of the equipment, the changes in temperature and liquid level, and the historical data records in real time. The user interface usually has a friendly graphical display for easy understanding and operation.

[0061] Alarm mechanism:

[0062] If the monitored liquid level or temperature exceeds the set safety range, the system will immediately trigger the alarm mechanism and send an alarm notification to the relevant personnel to remind them to take corresponding measures.

[0063] Data archiving and analysis:

[0064] All the collected data and alarm information will be archived in the data storage system for subsequent trend analysis, data backtracking, and decision support to help managers conduct more effective system management and fault prevention.

[0065] Assume that during the operation of the remote monitoring system, the liquid level gauge 71 monitors that the liquid level of the waste liquid tank reaches the preset high liquid level alarm threshold. The workflow is as follows:

[0066] Data collection: The liquid level gauge 71 monitors the liquid level of the waste liquid tank in real time and collects data.

[0067] Data transmission: The liquid level data is sent to the communication module through the data acquisition module and transmitted to the central processing unit.

[0068] Data processing: After receiving the data, the central processing unit conducts real-time analysis to determine whether the liquid level exceeds the normal range.

[0069] Alarm Trigger: After detecting that the liquid level exceeds the set threshold, the system immediately triggers the alarm mechanism.

[0070] User Notification: The system notifies the operator via text message, email, etc., and displays a liquid level anomaly warning on the user interface.

[0071] Subsequent Processing: The operator takes timely measures (such as manually discharging waste liquid) based on the alarm information to ensure the safe operation of the system.

[0072] Through such a workflow, the remote monitoring system can effectively improve the management efficiency and safety of the cyanide-containing wastewater sampling device, ensuring the safety and reliability of the operation process.

[0073] At the position on the above-mentioned wastewater discharge pipe 11 between the connection of the liquid extraction branch pipe 12 and the main valve, a spare discharge pipe 13 is connected in communication; one end of the above-mentioned spare discharge pipe 13 is connected in communication with the wastewater discharge pipe 11, and the other end is equipped with a hard-sealed gate valve. The spare discharge pipe 13 is arranged on the wastewater discharge pipe 11 and is used to provide an additional discharge channel when needed. It is connected at the position between the liquid extraction branch pipe 12 and the main valve, and the outflow of wastewater is controlled by the hard-sealed gate valve. When the system is operating normally and no spare channel is required, the spare discharge pipe 13 is in a closed state. The presence of the spare discharge pipe 13 improves the flexibility of the system, and can provide a spare discharge path when the main channel fails or needs maintenance, ensuring the continuous operation of the system.

[0074] The working process of the present utility model is as follows:

[0075] Cyanide-containing wastewater enters the system: After being treated in the cyanide-breaking reaction kettle, the cyanide-containing wastewater enters the system through the liquid extraction pipeline group 1. The liquid extraction pipeline group 1 includes a wastewater discharge pipe 11 and a liquid extraction branch pipe 12.

[0076] Cooling Process:

[0077] When no sampling operation is carried out, both the main valve and the discharge valve on the wastewater discharge pipe 11 are in the open state, and the cyanide-containing wastewater is directly discharged from the system through the wastewater discharge pipe 11.

[0078] When a sampling operation is required, first close the discharge valve and open the main valve. Then open the flow regulating valve and the hard-sealed gate valve on the liquid extraction branch pipe 12 to allow the cyanide-containing wastewater to enter the feed pipeline 2.

[0079] The cyanide-containing wastewater enters the cooling device 3 through the feed pipeline 2. In the cooling device 3, the cyanide-containing wastewater flows through the titanium spiral inner coil 32, and the chilled brine circulates as a refrigerant through the refrigerant inlet 33 and the refrigerant outlet 34 to take away the heat in the wastewater and reduce its temperature.

[0080] Waste liquid collection: The cooled wastewater enters the waste liquid tank 7 through the discharge pipeline 4. The waste liquid tank 7 is equipped with a liquid level gauge 71 for monitoring the wastewater level to prevent the tank from overflowing. The waste liquid tank 7 is also equipped with a waste liquid discharge pipe 72, and the end is equipped with a hard-sealed gate valve to ensure the safe discharge of the waste liquid.

[0081] Sampling operation:

[0082] Before sampling, keep the sampling stop valve 6 open and the hard-sealed gate valve on the sampling pipe 5 closed to ensure that the cyanide-containing wastewater flows through the cooling device 3 and then enters the waste liquid tank 7. This process lasts for about 5 minutes to ensure that the residual waste liquid in the pipeline is flushed and replaced and cooled down.

[0083] Close the sampling stop valve 6 and open the hard-sealed gate valve on the sampling pipe 5 for sampling. At this time, the sampling pipe 5 is connected to the discharge pipeline 4 to ensure safe sampling under high-temperature and high-pressure conditions, avoiding personnel poisoning, scalding and environmental pollution.

[0084] Working principle:

[0085] High-temperature and high-pressure wastewater treatment: After the cyanide-containing wastewater is treated in the cyanide-breaking reaction kettle, it is still in a high-temperature and high-pressure state. The sampling device introduces this wastewater through the liquid extraction pipeline group 1.

[0086] Cooling system: The titanium spiral inner coil 32 inside the cooling device 3 uses chilled brine as the refrigerant, and the heat of the wastewater is carried away through the circulation of the refrigerant to reduce its temperature and ensure the safety of subsequent operations.

[0087] Safety of sampling operation: By setting multiple gate valves (such as the main gate valve, discharge gate valve, hard-sealed gate valve and sampling stop valve, etc.), the flow direction of the wastewater is controlled and sealed to ensure that the sampling process is carried out in a closed system, avoiding wastewater leakage and harm to the environment and operators.

[0088] In summary:

[0089] When a batch of cyanide-containing wastewater needs to be sampled for testing, the process is as follows:

[0090] After the cyanide-containing wastewater is treated in the cyanide-breaking reaction kettle, the temperature is still relatively high and the pressure is also relatively large.

[0091] The cyanide-containing wastewater enters the system through the wastewater discharge pipe 11. At this time, the main gate valve and the discharge gate valve are in the closed state, and the flow regulating valve and the hard-sealed gate valve are open.

[0092] The cyanide-containing wastewater enters the feed pipeline 2 and is cooled by the titanium spiral inner coil 32 in the cooling device 3, and the refrigerant is chilled brine to ensure that the temperature of the wastewater is reduced.

[0093] The cooled wastewater enters the waste liquid tank 7 through the discharge pipeline 4, and the liquid level gauge 71 monitors the waste liquid level in real time.

[0094] When performing the sampling operation, open the main valve and close the discharge valve. Keep the sampling stop valve 6 open and the hard-sealed gate valve on the sampling pipe 5 closed. The wastewater flows through the cooling device 3 and then enters the waste liquid tank 7, and stays for about 5 minutes to ensure that the residual wastewater in the pipeline is flushed and replaced and cooled down.

[0095] Close the sampling stop valve 6 and open the hard-sealed gate valve on the sampling pipe 5 to perform the sampling operation. At this time, the sampling pipe 5 is connected to the discharge pipeline 4, and the sampling volume is controlled by the hard-sealed gate valve to ensure safety.

[0096] After sampling, close the hard-sealed gate valve on the sampling pipe 5 again to restore the normal operation state of the system.

[0097] Through the above process, the sampling operation of the cyanide-containing wastewater is completed safely and efficiently, avoiding the risks of personnel poisoning, scalding and environmental pollution.

[0098] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-temperature and high-pressure sampling device for cyanide-containing wastewater, comprising a feed pipe (2), a cooling device (3), a discharge pipe (4) and a sampling tube (5), characterized in that: One end of the feed pipe (2) is connected to a plurality of liquid collection pipe groups (1), and the other end is connected to the inlet of the cooling device (3); one end of the liquid collection pipe group (1) is used to introduce cyanide-containing wastewater, and the other end is connected to the feed pipe (2); one end of the discharge pipe (4) is connected to the outlet of the cooling device (3), and the other end is connected to the waste liquid tank (7); the discharge pipe (4) is provided with a sampling pipe (5) connected thereto, one end of the sampling pipe (5) is connected to the discharge pipe (4), and the other end is equipped with a hard-sealed gate valve; a sampling stop valve (6) is connected to the discharge pipe (4) at a position between the sampling pipe (5) and the waste liquid tank (7).

2. A high temperature and high pressure sampling device for cyanide-containing wastewater according to claim 1, characterized in that: The liquid intake pipeline group (1) comprises a wastewater discharge pipe (11) and a liquid intake branch pipe (12); one end of the wastewater discharge pipe (11) is used to introduce cyanide-containing wastewater, and the other end is equipped with a discharge gate valve, and the wastewater discharge pipe (11) is also provided with a main gate valve, one end of the liquid intake branch pipe (12) is connected to the wastewater discharge pipe (11), and the connection position is located between the main gate valve and the discharge gate valve, and the other end of the liquid intake branch pipe (12) is connected to the feed pipe (2); the liquid intake branch pipe (12) is equipped with a flow control valve and a hard-sealed gate valve.

3. A high temperature and high pressure sampling device for cyanide-containing wastewater according to claim 1, characterized in that: The connection points between the feed pipe (2) and the discharge pipe (4) and the cooling device (3) are respectively equipped with temperature sensors (8).

4. A high-temperature and high-pressure sampling device for cyanide-containing wastewater according to claim 1, characterized in that: The cooling device (3) comprises a cooling tank (31), a titanium spiral inner coil (32), a refrigerant inlet (33), a refrigerant outlet (34), a drain port (35) and an exhaust port (36); the titanium spiral inner coil (32) is arranged inside the cooling tank (31); the feed pipe (2) penetrates from the outside into the internal cavity of the cooling tank (31) and is connected to the inlet of the titanium spiral inner coil (32); the discharge pipe (4) penetrates from the outside into the internal cavity of the cooling tank (31) and is connected to the outlet of the titanium spiral inner coil (32); the cooling tank (31) is provided with a refrigerant inlet (33) on the tank body, a refrigerant outlet (34) and an exhaust port (36) are provided on the top, and a drain port (35) is provided at the bottom, and a hard-sealed gate valve is installed on the drain port (35); the refrigerant inlet (33) and the refrigerant outlet (34) are respectively connected to a refrigerant source to form a circulation loop.

5. A high-temperature and high-pressure sampling device for cyanide-containing wastewater as claimed in claim 3, characterized in that: The waste liquid tank (7) is equipped with a liquid level meter (71) on its body; the waste liquid tank (7) is equipped with a waste liquid discharge pipe (72) on its body, and a hard-sealed gate valve is equipped at the end of the waste liquid discharge pipe (72).

6. A high-temperature and high-pressure sampling device for cyanide-containing wastewater as claimed in claim 5, characterized in that: The liquid level meter (71) and the temperature sensor (8) are respectively connected to the remote monitoring system for communication.

7. A high-temperature and high-pressure sampling device for cyanide-containing wastewater as claimed in claim 2, characterized in that: A spare discharge pipe (13) is connected to the wastewater discharge pipe (11) at a position between the connection point of the liquid intake branch pipe (12) and the main gate valve; one end of the spare discharge pipe (13) is connected to the wastewater discharge pipe (11), and the other end is connected to a hard-sealed gate valve.

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