Supercritical pretreatment pilot plant test experimental device

Abstract

The embodiment of the utility model provides a pilot plant test experimental device for supercritical pretreatment. The supercritical pretreatment pilot plant test experiment device comprises a stirring cup; the stirring device at least partially extends into the stirring cup so as to stir the mixture in the stirring cup; the pH sensor device is connected to the part, extending into the stirring cup, of the stirring device, and the pH sensor device is used for detecting the pH value of the mixture. According to the embodiment of the invention, the structure of the pilot test device for supercritical pretreatment is simpler, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of hazardous waste treatment, and specifically relates to a supercritical pretreatment pilot test device. Background Art

[0002] Supercritical water oxidation technology is a technology that can achieve deep oxidation treatment of a variety of organic wastes. It is used in the treatment of daily environmental hazardous wastes such as chemical synthesis and municipal sludge. When using supercritical water oxidation technology to treat hazardous wastes, it is usually necessary to pre-treat the hazardous wastes so that they meet the feed conditions of the supercritical treatment system. Once the feed conditions are not met, it will cause pressure fluctuations and temperature fluctuations in the supercritical treatment system. Therefore, in order to study the impact of feed conditions on supercritical treatment systems, pilot experiments are usually used for research.

[0003] In the prior art, the pilot test device usually includes a stirring device and a pH sensor. The stirring device is used to stir the mixture to make it uniformly mixed, and the pH value of the mixture is detected by the pH sensor. However, an additional mounting part is usually required to install the pH sensor in the pilot test device so that it can be inserted into the mixture to detect the pH value, which makes the structure of the pilot test device complex and the manufacturing cost high. Utility Model Content

[0004] The present application aims to provide a supercritical pretreatment pilot test device to solve the problems of complex structure and high manufacturing cost of existing pilot test devices.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] The present application discloses a supercritical pretreatment pilot test device. The supercritical pretreatment pilot test device comprises:

[0007] Mixing cup;

[0008] a stirring device, wherein the stirring device at least partially extends into the stirring cup to stir the mixture in the stirring cup;

[0009] and a pH sensor device, wherein the pH sensor device is connected to the portion of the stirring device extending into the stirring cup, and the pH sensor device is used to detect the pH value of the mixture.

[0010] Optionally, the stirring device includes a stirring rod and a stirring paddle;

[0011] The stirring rod at least partially extends into the stirring cup, and the stirring paddle is connected to the portion of the stirring rod extending into the stirring cup to stir the mixture;

[0012] The pH sensor device is connected to the portion of the stirring rod extending into the stirring cup.

[0013] Optionally, the pH sensor device includes a sensor probe and a display screen;

[0014] The sensor probe is connected to the portion of the stirring rod extending into the stirring cup to detect the pH value of the mixture;

[0015] The display screen is connected to a portion of the stirring rod away from the sensor probe and is electrically connected to the sensor probe to display the pH value of the mixture.

[0016] Optionally, the supercritical pretreatment pilot test device further includes a filter screen, which is connected to the stirring rod and is located in the stirring cup, and the filter screen is used to filter the mixture in the stirring cup.

[0017] Optionally, the filter screen is made of stainless steel.

[0018] Optionally, the stirring cup, stirring rod and stirring paddle are all made of stainless steel.

[0019] Optionally, the stirring paddle includes a plurality of blades distributed around the central axis of the stirring rod.

[0020] Optionally, the supercritical pretreatment pilot test device further comprises a time device, which is connected to the stirring cup and is used to time the mixing time of the mixture.

[0021] Optionally, the mixing cup includes a bottom wall and a side wall connected to the bottom wall, and the side wall is provided with scale marks.

[0022] Optionally, the supercritical pretreatment pilot test device further comprises a heating device;

[0023] The heating device is connected to the mixing cup to heat the mixture.

[0024] In the embodiment of the present application, the pH sensor device of the supercritical pretreatment pilot experimental device is directly connected to the stirring device connected to the part of the stirring device extending into the stirring cup, thereby eliminating the need for other components to install the pH sensor, thereby making the structure of the supercritical pretreatment pilot experimental device simpler and reducing the manufacturing cost.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of a supercritical pretreatment pilot test device provided in an embodiment of the present application;

[0028] Figure numerals: 1 - stirring cup, 10 - bottom wall, 11 - side wall, 2 - stirring device, 20 - stirring rod, 21 - stirring paddle, 210 - paddle, 3 - pH sensor device, 30 - sensor probe, 31 - display screen, 4 - filter, 5 - scale mark, 6 - heating device. DETAILED DESCRIPTION

[0029] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] An embodiment of the present application provides a supercritical pretreatment pilot experimental device. The supercritical pretreatment pilot experimental device of the present application is described in detail below with reference to the accompanying drawings.

[0034] Supercritical water oxidation technology completely oxidizes organic matter into clean water, carbon dioxide, nitrogen and other substances through oxidation, converts sulfur, phosphorus and other substances into the highest valence salts for stabilization, and stabilizes heavy metals into oxidized solid phases in the ash. The principle of supercritical water oxidation technology is to use supercritical water as the reaction medium, and through a homogeneous oxidation reaction, organic matter is quickly converted into water, carbon dioxide, nitrogen and other harmless small molecules. It is often used to treat liquid hazardous waste and sludge.

[0035] When supercritical technology is used for hazardous waste disposal, the hazardous waste liquid needs to be pretreated, that is, the waste is mixed with water to make it a uniform phase, so as to meet the feeding conditions of the supercritical treatment system. If the feeding conditions are not met, the supercritical treatment system will cause pressure fluctuations and temperature fluctuations, causing the treatment system to stop and fail to treat hazardous waste normally. In order to avoid this situation, a supercritical pretreatment pilot test device is usually used to simulate the actual slurry configuration conditions, and a small-scale slurry is prepared in the pilot test device. After completion, it is sent for inspection and analysis to provide data reference for whether the specific indicators of the slurry configured in the supercritical treatment system meet the actual feeding conditions, thereby ensuring the stable operation of the supercritical treatment system.

[0036] Reference Figure 1 , showing a schematic structural diagram of a supercritical pretreatment pilot experimental device provided in an embodiment of the present application; the supercritical pretreatment pilot experimental device comprises: a stirring cup 1; a stirring device 2, wherein the stirring device 2 at least partially extends into the stirring cup 1 to stir the mixture in the stirring cup 1; and a pH sensor device 3, wherein the pH sensor device 3 is connected to the portion of the stirring device 2 extending into the stirring cup 1, and the pH sensor device 3 is used to detect the pH value of the mixture.

[0037] In the embodiment of the present application, the mixture can be fully mixed by the stirring device 2, and the pH value of the mixture is detected by the pH sensor device 3. By directly connecting the pH sensor device 3 to the stirring device 2, no other components are required to install the pH sensor, thereby making the structure of the supercritical pretreatment pilot experimental device simpler and reducing the manufacturing cost.

[0038] like Figure 1 As shown, optionally, the stirring device 2 includes a stirring rod 20 and a stirring paddle 21; the stirring rod 20 at least partially extends into the stirring cup 1, and the stirring paddle 21 is connected to the portion of the stirring rod 20 extending into the stirring cup 1 to stir the mixture; the pH sensor device 3 is connected to the portion of the stirring rod 20 extending into the stirring cup 1.

[0039] In actual application, the stirring paddle 21 is detachably connected to the stirring rod 20, and the stirring rod 20 and the stirring paddle 21 extend into the stirring cup 1. The stirring rod 20 and the stirring paddle 21 stir the mixture in the stirring cup 1 evenly, thereby improving the mixing uniformity of the pilot slurry.

[0040] like Figure 1 As shown, optionally, the pH sensor device 3 includes a sensor probe 30 and a display screen 31; the sensor probe 30 is connected to the portion of the stirring rod 20 extending into the stirring cup 1 to detect the pH value of the mixture; the display screen 31 is connected to the portion of the stirring rod 20 away from the sensor probe, and is electrically connected to the sensor probe 30 to display the pH value of the mixture.

[0041] Specifically, the stirring rod 20 can be a hollow structure, the sensor probe 30 is fixedly connected to one end of the stirring rod 20 extending into the stirring cup 1, and the display screen 31 is fixedly connected to the other end of the stirring rod 20 away from the sensor probe 30. The sensor probe 30 can be connected to the sensor data line through the stirring rod 20 to connect to the display screen 31. After the sensor probe 30 contacts the mixture, it can send the pH value to the display screen 31 for display.

[0042] In practical applications, the acidity and alkalinity of the mixture can be monitored at any time during the pretreatment process through the sensor probe 30 and the display screen 31, so as to ensure that the acidity and alkalinity of the pilot slurry is stable at neutral to prevent corrosion or clogging.

[0043] like Figure 1 As shown, optionally, the supercritical pretreatment pilot test device further includes a filter 4 , wherein the filter 4 is connected to the stirring rod 20 and is located in the stirring cup 1 , and the filter 4 is used to filter the mixture in the stirring cup 1 .

[0044] Specifically, the filter screen 4 is sleeved on the stirring rod 20 and is detachably connected to the stirring rod 20. The filter screen 4 is located inside the stirring cup 1, and the edge of the filter screen 4 is in contact with the inner wall of the filter screen 4. In practical applications, since the mixed slurry usually contains insoluble and difficult-to-handle solid impurities, it is necessary to filter out the solid impurities. In the embodiment of the present application, by setting the filter screen 4, the solid impurities can be filtered out without the use of an additional filtering device, which simplifies the steps and number of instruments of the filtering operation, and is conducive to reducing the cost of the pilot experiment. In addition, the filter screen 4 is detachably connected to the stirring rod, so that the filter screen 4 can be repeatedly cleaned and used, further reducing the cost of the pilot experiment.

[0045] Optionally, the filter screen 4 is made of stainless steel.

[0046] Specifically, the material of the filter screen 4 can be 304 stainless steel. In practical applications, the filter screen 4 made of stainless steel has high structural strength, so it is not easy to be damaged when filtering solid impurities, and has high corrosion resistance and long service life, thereby increasing the service life of the supercritical pretreatment pilot experimental device.

[0047] Optionally, the stirring cup 1 , the stirring rod 20 , and the stirring paddle 21 are all made of stainless steel.

[0048] Specifically, the stainless steel material can be 304 stainless steel. In actual applications, by setting the stirring cup 1, the stirring rod 20 and the stirring paddle 21 to stainless steel, the corrosion resistance is relatively high. Since the hazardous waste materials in the mixture are usually a mixture of various organic, inorganic, acid and alkali materials, which are highly corrosive, the stainless steel with high corrosion resistance will prevent the mixture from corroding the stirring cup 1, the stirring rod 20 and the stirring paddle 21, further increasing the service life of the supercritical pretreatment pilot experimental device.

[0049] like Figure 1 As shown, optionally, the stirring paddle 21 includes a plurality of blades 210 distributed around the central axis of the stirring rod.

[0050] Specifically, multiple blades 210 are evenly distributed around the central axis of the stirring rod. The number of blades 210 can be 2, 3, 4, etc. The blades of the blades 210 can be curved, flat or other shapes. The number and shape of the specific blades 210 in the embodiment of the present application can be selected according to the properties of the material to be stirred and the stirring effect to be achieved. The number and shape of the blades 210 are not specifically limited in the embodiment of the present application. In practical applications, by providing multiple blades 210, the mixture can be stirred by the joint action of the multiple blades 210, further improving the mixing uniformity of the pilot slurry.

[0051] Optionally, the supercritical pretreatment pilot test device further comprises a time device, which is connected to the stirring cup 1 and is used to time the mixing time of the mixture.

[0052] Specifically, the time device can be a stopwatch time device, which is fixedly connected to the outer surface of the mixing cup 1. In practical applications, by setting the time device, the mixing time of the mixture can be timed, so that the actual stirring time can be recorded more conveniently without the need for an additional device to record the time, thereby improving the convenience of recording the mixing time in the pilot experiment.

[0053] like Figure 1 As shown, optionally, the blending cup 1 includes a bottom wall 10 and a side wall 11 connected to the bottom wall 10 , and a scale mark 5 is provided on the side wall 11 .

[0054] In the embodiment of the present application, since the mixing cup 1 is provided with scale marks 5, there is no need to use additional weighing instruments during the preparation of the pilot slurry. The raw materials can be directly added to the mixing cup 1. By observing the scale marks 5 on the mixing cup, the amount of raw materials added can be accurately known, which makes the process of adding raw materials during the pilot test simpler and ensures that the raw materials added can be accurately weighed.

[0055] like Figure 1 As shown, optionally, the supercritical pretreatment pilot test device further includes a heating device 6; the heating device 6 is connected to the stirring cup 1 to heat the mixture.

[0056] Specifically, the heating device 6 can be a heating pad 6, and the heating pad 6 is connected to the bottom wall 10 of the stirring cup 1. In practical applications, in the process of preparing the pilot slurry, some emulsifiers need to be added. The emulsifiers cannot be dissolved at room temperature, and the slurry needs to be heated to dissolve. By providing the heating device 6, the mixture can be heated to dissolve the emulsifier, improve the mixing uniformity of the mixture, and further improve the mixing uniformity of the pilot slurry.

[0057] In summary, the supercritical pretreatment pilot test device provided in the embodiment of the present application has at least the following advantages:

[0058] In the embodiment of the present application, the mixture can be fully mixed by the stirring device 2, and the pH value of the mixture is detected by the pH sensor device 3. By directly connecting the pH sensor device 3 to the stirring device 2, no other components are required to install the pH sensor, thereby making the structure of the supercritical pretreatment pilot experimental device simpler and reducing the manufacturing cost.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A supercritical pretreatment pilot test device, characterized in that: The supercritical pretreatment pilot test device comprises: Mixing cup; a stirring device, wherein the stirring device at least partially extends into the stirring cup to stir the mixture in the stirring cup; and a pH sensor device, wherein the pH sensor device is connected to the portion of the stirring device extending into the stirring cup, and the pH sensor device is used to detect the pH value of the mixture.

2. The supercritical pretreatment pilot test device according to claim 1, characterized in that: The stirring device comprises a stirring rod and a stirring paddle; The stirring rod at least partially extends into the stirring cup, and the stirring paddle is connected to the portion of the stirring rod extending into the stirring cup to stir the mixture; The pH sensor device is connected to the portion of the stirring rod extending into the stirring cup.

3. The supercritical pretreatment pilot test device according to claim 2, characterized in that: The pH sensor device includes a sensor probe and a display screen; The sensor probe is connected to the portion of the stirring rod extending into the stirring cup to detect the pH value of the mixture; The display screen is connected to a portion of the stirring rod away from the sensor probe and is electrically connected to the sensor probe to display the pH value of the mixture.

4. The supercritical pretreatment pilot test device according to claim 2, characterized in that: The supercritical pretreatment pilot test device also includes a filter screen, which is connected to the stirring rod and is located in the stirring cup. The filter screen is used to filter the mixture in the stirring cup.

5. The supercritical pretreatment pilot test device according to claim 4, characterized in that: The filter screen is made of stainless steel.

6. The supercritical pretreatment pilot test device according to claim 2, characterized in that: The stirring cup, stirring rod and stirring paddle are all made of stainless steel.

7. The supercritical pretreatment pilot test device according to claim 2, characterized in that: The stirring paddle comprises a plurality of blades distributed around the central axis of the stirring rod.

8. The supercritical pretreatment pilot test device according to claim 1, characterized in that: The supercritical pretreatment pilot test device further comprises a time device, which is connected to the stirring cup and is used to time the mixing time of the mixture.

9. The supercritical pretreatment pilot test device according to claim 1, characterized in that: The stirring cup comprises a bottom wall and a side wall connected to the bottom wall, and scale marks are arranged on the side wall.

10. The supercritical pretreatment pilot test device according to claim 1, characterized in that: The supercritical pretreatment pilot test device also includes a heating device; The heating device is connected to the mixing cup to heat the mixture.

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