Outlet water detection device of supercritical system

Abstract

The utility model provides an effluent detection device for a supercritical system, which comprises a sieving device (1) arranged on one side, close to a water inlet, of the effluent detection device for the supercritical system; the pH value detection device (2) is arranged on one side, close to the water outlet, of the supercritical system water outlet detection device. After residues (salt deposits, insoluble precipitates and the like) in the effluent of the system are filtered out through the screening device (1), the pH value of the effluent of the system is monitored through the pH value detection device (2), so that the influence of the residues in the effluent of the system on the monitoring accuracy of the pH value and the condition that the pH value detection device is damaged are avoided; according to the invention, an engineer can conveniently adjust the ratio of various waste liquids in the follow-up compatible slurry, and the conditions of corrosion or deposition and excessive precipitated salt can be reduced, so that the stable operation of the supercritical system is ensured while the PH of the effluent of the system is continuously monitored, and the starting and stopping times are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, and particularly relates to a detection device for the effluent of a supercritical system. Background Art

[0002] Supercritical water oxidation (SCWO, Supercritical Water Oxidation) technology is an effective method for treating organic waste under high temperature and high pressure. With supercritical water as the reaction medium, organic matter is oxidized and decomposed under high temperature (above 374 °C) and high pressure (above 22.1 MPa). This process can not only efficiently mineralize organic matter, but also treat inorganic salts to a certain extent.

[0003] When the supercritical system is used for hazardous waste disposal, there is generally effluent from the system that has completed disposal through the supercritical reactor in the pipeline of the subsequent system, and it is necessary to regularly monitor the pH value of the effluent. The pH value of the effluent can reflect the acidity and alkalinity of the current system and the acidity and alkalinity of the premixed slurry. For example, when the pH of the effluent is acidic, it may cause corrosion of the system pipeline, resulting in phenomena such as leakage points and pressure leakage, and it is extremely easy to cause shutdown. Secondly, it can also reflect that the overall pH of the current slurry is relatively small and acidic, providing a basis for the formulation engineer to adjust the slurry. When the pH of the effluent is alkaline, it is easy to form insoluble basic salts, which adhere to the bends of the subsequent system pipeline, may cause blockage of the system pipeline, an increase in the overall pressure, a decrease in the load capacity, and a decrease in the disposal volume, and then shutdown for maintenance is required.

[0004] However, in the related technology, when sampling and monitoring the pH of the effluent through the pipeline port, the effect of continuous sampling and monitoring for 24 hours cannot be achieved, and both human and material resources are limited. At the same time, due to the excessive turbidity of the effluent, the detection result of the pH will also be inaccurate, affecting subsequent adjustments. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a detection device for the effluent of a supercritical system to solve the problems in the related technology that the sampling and monitoring system at the pipeline port cannot achieve the effect of continuous sampling and monitoring for 24 hours, both human and material resources are limited, and at the same time, due to the excessive turbidity of the effluent, the detection result of the pH is also inaccurate, affecting subsequent adjustments.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A detection device for the effluent of a supercritical system, the detection device for the effluent of a supercritical system includes:

[0008] A screening device (1), the screening device (1) is arranged on one side of the detection device for the effluent of a supercritical system close to the water inlet;

[0009] The pH detection device (2) is arranged on one side of the supercritical system water outlet detection device close to the water outlet.

[0010] Optionally, the sieving device (1) includes:

[0011] A sieve mesh (3) which is arranged on one side of the sieving device (1) close to the water inlet.

[0012] Optionally, the sieving device (1) further includes:

[0013] A permeable membrane (4) which is arranged on one side of the sieving device (1) close to the water outlet.

[0014] Optionally, the sieving device (1) further includes:

[0015] A slag discharge port (5) which is arranged between the sieve mesh (3) and the permeable membrane (4).

[0016] Optionally, the slag discharge port (5) is arranged on the side surface of the supercritical system water outlet detection device.

[0017] Optionally, the sieve mesh (3) is fixedly connected to the inner wall of the supercritical system water outlet detection device.

[0018] Optionally, the permeable membrane (4) is fixedly connected to the inner wall of the supercritical system water outlet detection device.

[0019] Optionally, the shape of the supercritical system water outlet detection device is cylindrical and the shapes of the sieve mesh (3) and the permeable membrane (4) are both circular.

[0020] Optionally, the pH detection device (2) is a pH meter.

[0021] Optionally, the pH detection device (2) is fixedly connected to the water outlet end of the supercritical system water outlet detection device.

[0022] Advantages of the utility model:

[0023] The utility model provides a device for detecting the water output of a supercritical system, comprising: a sieving device (1) which is arranged on one side of the device for detecting the water output of the supercritical system close to the water inlet; and a pH detection device (2) which is arranged on one side of the device for detecting the water output of the supercritical system close to the water outlet. After filtering out residues (such as salt deposits and insoluble precipitates) in the system water output through the sieving device (1), the pH value of the system water output is monitored through the pH detection device (2), avoiding the influence of the residues in the system water output on the accuracy of pH value monitoring and the situation of damage to the pH detection device. It is convenient for engineers to adjust the proportion of various waste liquids in the subsequent compatible slurry, and can reduce the situation of the compatible slurry being too acidic or too alkaline at the source, thereby reducing the situations of corrosion or excessive deposition and precipitation salts. Thus, while continuously monitoring the pH of the system water output, the stable operation of the supercritical system is ensured, and the number of start-up and shutdown times is reduced; at the same time, the sieved system water output meets the disposal standard that can pass through the water treatment process, and most of the precipitates and deposited salts have been removed. After being treated by the water treatment process, the system water output can be reused as a dilution material in the supercritical compatible slurry, reducing the cost of the water treatment process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments of the present utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0025] Figure 1 FIG. is a schematic structural diagram of a device for detecting the water output of a supercritical system provided by an embodiment of the present utility model.

[0026] Description of the reference numerals: 1 - sieving device; 2 - pH detection device, 3 - sieve mesh, 4 - permeable membrane, 5 - slag discharge port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will describe the embodiments of the present utility model with reference to the drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.

[0028] It should be noted that the illustrations provided in the following embodiments only schematically illustrate the basic concept of the present utility model. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The form, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the layout form of its components may also be more complex.

[0029] Supercritical water oxidation technology is an effective method for treating organic waste under high temperature and high pressure. With supercritical water as the reaction medium, organic matter is oxidized and decomposed under high temperature (above 374 °C) and high pressure (above 22.1 MPa). This process can not only efficiently mineralize organic matter but also treat inorganic salts to a certain extent.

[0030] When the supercritical system is used for hazardous waste disposal, there is generally system effluent that has completed disposal through the supercritical reaction kettle in the pipeline of the subsequent system, and it is necessary to regularly monitor the pH value of the system effluent. The pH value of the system effluent can reflect the acidity and alkalinity of the current system and the acidity and alkalinity of the premixed slurry. For example, when the pH of the system effluent is acidic, it may cause corrosion of the system pipeline, resulting in phenomena such as leakage points and pressure leakage, which are extremely likely to cause a shutdown. Secondly, it can also reflect that the overall pH of the current mixing slurry is relatively small and acidic, providing a basis for the formulation engineer to adjust the mixing slurry; when the pH of the system effluent is alkaline, it is easy to form insoluble alkali salts, which adhere to various bends in the pipeline of the subsequent system, may cause blockage of the system pipeline, an increase in the overall pressure, a decrease in the load capacity, and a reduction in the disposal volume, and thus requires a shutdown for maintenance.

[0031] However, in the related technology, when sampling and monitoring the pH of the system effluent through the pipe orifice, it is often impossible to achieve the effect of continuous sampling and monitoring for 24 hours, and both human and material resources are limited. At the same time, due to the excessive turbidity of the system effluent, it will also lead to inaccurate pH detection results, affecting subsequent adjustments.

[0032] Regarding the problems solved by the present utility model, the following will be described in detail:

[0033] Referring to Figure 1 , there is shown a device for detecting the effluent of a supercritical system provided by an embodiment of the present utility model, including:

[0034] A sieving device 1, the sieving device 1 is arranged on one side of the supercritical system effluent detection device close to the water inlet;

[0035] A pH detection device 2, the pH detection device 2 is arranged on one side of the supercritical system effluent detection device close to the water outlet.

[0036] In specific implementation, since the formulated slurry in the reaction kettle is a mixture of various organic, inorganic, acids, and bases, even when reaching the optimal state of slurry formulation, its stability and stability are relatively poor, and it is easy to form insoluble salt deposits inside. When the reaction kettle completes the slurry treatment through high temperature and high pressure, a large amount of residue is often carried when discharging water to the subsequent system through the pipeline discharge system, resulting in inaccurate pH detection results and affecting subsequent adjustments. Therefore, a supercritical system effluent detection device can be set up, which can at least include a screening device 1 and a pH detection device 2. The screening device 1 can be used to filter out most of the residues (such as salt deposits, insoluble precipitates, etc.). The screening device can be set in front of the pH meter (i.e., the pH detection device 2), and can be composed of a filter screen and a permeable membrane (the combination of the two can basically filter out most of the deposits, and then the corresponding secondary hazardous waste can be discharged and collected from the slag discharge port 5). At this time, the relatively pure system effluent is then monitored for the pH value of the system effluent by the pH meter (avoiding the influence of a large amount of precipitates on the accuracy of the pH meter and even damaging the pH meter), so as to facilitate engineers to adjust the ratio of various waste liquids in the subsequent formulated slurry, reduce the phenomenon of the formulated slurry being overly acidic or overly alkaline from the root cause, and reduce the situations of corrosion, excessive deposition, and excessive precipitation salts, thereby ensuring the stable operation of the supercritical system and reducing the number of start-ups and shut-downs; at the same time, the system effluent after screening meets the disposal standards that can pass through the water treatment process, and most of the precipitates and deposited salts have been removed. After being treated by the water treatment process, the system effluent can be reused as a dilution material in the supercritical formulated slurry and continue to be used.

[0037] In an embodiment of the present invention, the screening device 1 includes:

[0038] A screening mesh 3, and the screening mesh 3 is arranged on the side of the screening device 1 close to the water inlet.

[0039] In practical applications, the screening device 1 can be set to at least include a screening mesh 3, so that larger deposits and impurities can be effectively intercepted by the screening mesh 3, reducing the pollution and damage to subsequent detection equipment, and at the same time providing more accurate conditions for pH detection.

[0040] In an embodiment of the present invention, the screening device 1 further includes:

[0041] A permeable membrane 4, and the permeable membrane 4 is arranged on the side of the screening device 1 close to the water outlet.

[0042] In specific implementation, the screening device 1 can be set to at least further include a permeable membrane 4, so that the fine particles still remaining after passing through the screening mesh 3 can be further filtered by the permeable membrane 4, ensuring that the system effluent is clearer, avoiding polluting the pH meter, and thus providing a more accurate pH value detection effect.

[0043] In an embodiment of the present invention, the screening device 1 further includes:

[0044] The slag discharge port 5 is provided between the sieve mesh 3 and the permeable membrane 4.

[0045] In practical applications, it can be set that the sieving device 1 further includes a slag discharge port 5, so as to facilitate the timely removal of the sediment captured during the sieving process, and maintain the filtering efficiency of the sieving device 1 and the measurement accuracy of the pH detection device 2.

[0046] In an embodiment of the present invention, the slag discharge port 5 is provided on the side surface of the supercritical system effluent detection device.

[0047] In a specific implementation, the slag discharge port 5 can be provided on the side surface of the supercritical system effluent detection device, so as to facilitate the discharge of the sediment and the operation of the operator to remove the sediment, and simplify the process of maintenance and cleaning.

[0048] In an embodiment of the present invention, the sieve mesh 3 is fixedly connected to the inner wall of the supercritical system effluent detection device.

[0049] In a specific implementation, the sieve mesh 3 can be fixedly connected to the inner wall of the supercritical system effluent detection device, so as to ensure the stable position of the sieve mesh during the sieving process and prevent it from shifting due to the impact of the water flow, and ensure continuous and effective filtering effect.

[0050] In an embodiment of the present invention, the permeable membrane 4 is fixedly connected to the inner wall of the supercritical system effluent detection device.

[0051] In practical applications, the permeable membrane 4 can be fixedly connected to the inner wall of the supercritical system effluent detection device, so as to ensure the continuous filtering ability for fine particles, prevent the jumping or falling off in the filtering device, and thus ensure the stability of the effluent quality and the measurement of the pH meter.

[0052] In an embodiment of the present invention, the shape of the supercritical system effluent detection device is cylindrical and the shapes of the sieve mesh 3 and the permeable membrane 4 are both circular.

[0053] In a specific implementation, the shape of the supercritical system effluent detection device can be set to be cylindrical and the shapes of the sieve mesh 3 and the permeable membrane 4 can be set to be both circular, so as to simplify the processing and assembly process, ensure the uniformity of the water flow during the sieving process, and be more in line with the hydrodynamic performance during actual application.

[0054] In an embodiment of the present invention, the pH detection device 2 is a pH meter.

[0055] In practical applications, the pH detection device 2 can be set as a pH meter, which can not only accurately measure the pH value of water through the pH meter, but also facilitate the docking of monitoring data with the control system to achieve automated monitoring and adjustment.

[0056] In an embodiment of the present invention, the pH detection device 2 is fixedly connected to the water outlet end of the supercritical system water outlet detection device.

[0057] In specific implementation, the pH detection device 2 can be fixedly connected to the water outlet end of the supercritical system water outlet detection device, thereby ensuring the stability of the device measurement point, improving the reliability of the monitoring data, and providing real-time monitoring data for the system operation.

[0058] In an embodiment of the present invention, a supercritical system water outlet detection device is provided, including: a sieving device 1, the sieving device 1 is arranged on one side of the supercritical system water outlet detection device close to the water inlet; a pH detection device 2, the pH detection device 2 is arranged on one side of the supercritical system water outlet detection device close to the water outlet. After filtering out the residues (such as salt deposits and insoluble precipitates) in the system water by the sieving device 1, the pH value of the system water is monitored by the pH detection device 2, avoiding the influence of the residues in the system water on the accuracy of pH value monitoring and the situation of damage to the pH detection device, facilitating engineers to adjust the ratios of various waste liquids in the subsequent formulated slurry, and being able to reduce the situation of the formulated slurry being overly acidic or alkaline at the source, thereby reducing the situations of corrosion or excessive deposition and precipitation salts. Thus, while continuously monitoring the pH of the system water, the stable operation of the supercritical system is ensured, and the number of start-up and shutdown times is reduced; at the same time, the water outlet of the system after sieving meets the disposal standard that can pass through the water treatment process, and most of the precipitates and deposition salts have been removed. After being treated by the water treatment process, the water outlet of the system can be reused as a dilution material in the supercritical formulated slurry, reducing the cost of the water treatment process.

[0059] Each embodiment in this specification is described in a progressive manner. The key points of each embodiment are the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0060] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, commodity or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, commodity or device comprising the said element.

[0061] The above has introduced in detail a supercritical system water outlet detection device provided by the present utility model. Specific examples are used in this text to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A water outlet detection device for a supercritical system, characterized in that The water outlet detection device of the supercritical system includes: A sieving device (1), which is arranged on the side of the water outlet detection device of the supercritical system close to the water inlet; A pH detection device (2), which is arranged on the side of the water outlet detection device of the supercritical system close to the water outlet.

2. The water outlet detection device of the supercritical system according to claim 1, wherein The sieving device (1) includes: A sieve mesh (3), which is arranged on the side of the sieving device (1) close to the water inlet.

3. The water outlet detection device for the supercritical system according to claim 2, wherein The sieving device (1) further includes: A permeable membrane (4), which is arranged on the side of the sieving device (1) close to the water outlet.

4. The water outlet detection device of the supercritical system according to claim 3, characterized in that, The sieving device (1) further includes: A slag discharge port (5), which is arranged between the sieve mesh (3) and the permeable membrane (4).

5. The water outlet detection device for the supercritical system according to claim 4, characterized in that The slag discharge port (5) is arranged on the side surface of the water outlet detection device of the supercritical system.

6. The supercritical system effluent detection device according to claim 2, wherein The sieve mesh (3) is fixedly connected to the inner wall of the water outlet detection device of the supercritical system.

7. The water outlet detection device for the supercritical system according to claim 3, characterized in that The permeable membrane (4) is fixedly connected to the inner wall of the water outlet detection device of the supercritical system.

8. The water outlet detection device of the supercritical system according to claim 3, characterized in that The shape of the water outlet detection device of the supercritical system is cylindrical, and the shapes of the sieve mesh (3) and the permeable membrane (4) are both circular.

9. The water outlet detection device for the supercritical system according to claim 1, wherein The pH detection device (2) is a pH meter.

10. The water outlet detection device of the supercritical system according to claim 1, characterized in that, The pH detection device (2) is fixedly connected to the water outlet end of the water outlet detection device of the supercritical system.

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