Industrial methanol potassium permanganate experiment system

Abstract

The invention provides an industrial methanol potassium permanganate experiment system, which comprises a main experiment device, and the main experiment device comprises a closed water tank in which a sample colorimetric tube and a standard solution colorimetric tube are arranged; the optical assembly emits a first light beam and a second light beam which are the same to irradiate the sample colorimetric tube and the standard solution colorimetric tube respectively; the first photomultiplier tube is arranged in the closed water tank and is positioned on a light path of the first light beam penetrating through the sample colorimetric tube; the second photomultiplier tube is arranged in the closed water tank and is positioned on a light path of the second light beam penetrating through the standard solution colorimetric tube; the input end of the controller is in communication connection with the output ends of the first photomultiplier and the second photomultiplier; and the control end of the timer is in communication connection with the output end of the controller. With the adoption of the method, manual timing by observing the color change of the solution in the sample colorimetric tube with naked eyes by personnel is avoided, the timing result is not influenced by external light and individual difference of analysts, and the accuracy and precision of the experimental result are improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal chemical industry, and in particular to an industrial methanol potassium permanganate experimental system. Background Art

[0002] Industrial methanol has a wide range of uses. In addition to being a good solvent for many organic substances, it is mainly used in the industrial production of synthetic fibers, formaldehyde, plastics, medicines, pesticides, dyes, synthetic proteins, etc. It is a basic organic chemical raw material.

[0003] According to GB338-2011 Industrial Methanol, potassium permanganate test is an important technical requirement for industrial methanol. Methanol contains methyl formate, some aldehydes, ketones, formic acid, unsaturated hydrocarbons, and some impurities that increase conductivity, such as amines, acids, metals, etc., which are easily oxidized due to the presence of carbon-carbon double bonds and carbon-oxygen double bonds. Potassium permanganate is an oxidizing substance. Under certain conditions, it can react with the above-mentioned reducing substances. Potassium permanganate is reduced to manganese dioxide, and the color changes from pink to orange. Therefore, the potassium permanganate experiment can reflect the amount of reducing impurities in industrial methanol. If the color change time is long, it means that there are few reducing impurities in industrial methanol, otherwise it means that there are many impurities.

[0004] At present, the potassium permanganate experiment uses visual colorimetry to analyze the results. The depth of the solution color is compared with the eyes, and the time it takes for the sample to fade to the same color as the standard colorimetric solution at a constant temperature after adding potassium permanganate is measured. However, visual colorimetry is easily affected by external light, individual differences in analysts, etc., which will affect the accuracy of the analysis results to a certain extent. Summary of the invention

[0005] In view of this, the present invention provides an industrial methanol potassium permanganate experimental system to solve the above technical problems.

[0006] The industrial methanol potassium permanganate experimental system provided by the present invention comprises a main experimental device, and the main experimental device comprises:

[0007] A sealed water tank, wherein a sample colorimetric tube and a standard solution colorimetric tube are arranged in the sealed water tank;

[0008] An optical component, wherein the optical component emits the same first light beam and second light beam to illuminate the sample colorimetric tube and the standard solution colorimetric tube respectively;

[0009] A first photomultiplier tube, which is disposed in the sealed water tank and is located on an optical path where the first light beam passes through the sample colorimetric tube;

[0010] A second photomultiplier tube, the second photomultiplier tube is disposed in the sealed water tank and is located on the optical path of the second light beam passing through the standard solution colorimetric tube;

[0011] A controller, wherein an input end of the controller is communicatively connected with output ends of the first photomultiplier tube and the second photomultiplier tube;

[0012] A timer, wherein a control end of the timer is communicatively connected with an output end of the controller.

[0013] Optionally, the optical component comprises:

[0014] light source;

[0015] A concave mirror, wherein the concave mirror is located on the optical path of the light source;

[0016] A monochromator, the monochromator being located on the reflected light path of the concave mirror;

[0017] A beam splitter, the beam splitter is located on the optical path of the light passing through the monochromator, and the light is split into a first light and a second light after passing through the beam splitter;

[0018] a first plane mirror, wherein the first plane mirror is located on the optical path of the first light, and the first light forms the first light beam after being reflected by the first plane mirror;

[0019] A second plane mirror, wherein the second plane mirror is located on the optical path of the second light ray, and the second light ray is reflected by the second plane mirror to form the second light beam.

[0020] Optionally, the industrial methanol potassium permanganate experimental system further includes a sampling device, and the sampling device includes:

[0021] A piston cylinder, wherein the piston cylinder is provided with a liquid inlet;

[0022] A piston head, wherein the piston head is disposed in the piston cylinder;

[0023] A piston rod, the piston rod is fixedly connected to the piston head and drives the piston head to move back and forth in the piston cylinder;

[0024] A sample bottle, wherein the sample bottle is connected to a sample tube;

[0025] A potassium permanganate reagent bottle, wherein the potassium permanganate reagent bottle is connected to a reagent tube;

[0026] A liquid inlet pipe, a first end of which passes through the closed water tank and is connected to the sample colorimetric tube;

[0027] A rotary valve is provided with an input port and an output port, wherein the input port is connected to the liquid inlet of the piston cylinder, and by rotating the rotary valve, the output port can be connected to the second end of the sample tube, the reagent tube or the liquid inlet tube.

[0028] Optionally, the sampling device further comprises:

[0029] A waste liquid bottle is connected to a waste liquid pipe, and the output port can be connected to the waste liquid pipe by rotating the rotary valve.

[0030] Optionally, a liquid level sensor is installed in the sample colorimetric tube, and an output end of the liquid level sensor is communicatively connected to an input end of the controller.

[0031] Optionally, the main experimental device also includes:

[0032] A cooling assembly, the cooling assembly is used to cool the closed water tank;

[0033] A temperature sensor, wherein the temperature sensor is disposed in the sealed water tank;

[0034] The input end of the controller is communicatively connected to the output end of the temperature sensor, and the output end of the controller is communicatively connected to the control end of the cooling component.

[0035] Optionally, the cooling assembly comprises:

[0036] A compressor, wherein the inlet of the compressor is connected to the input pipe, the outlet of the compressor is connected to the output pipe, and the control end of the compressor is communicatively connected to the output end of the controller;

[0037] A cooling pipeline is arranged in the closed water tank, a first end of the cooling pipeline is connected to the input pipe, and a second end of the cooling pipeline is connected to the output pipe.

[0038] Optionally, the main experimental device further includes: a display screen, which is communicatively connected to the output end of the controller.

[0039] Optionally, the main experimental device further includes: a control panel, on which the display screen is mounted, and the control panel is communicatively connected with the controller.

[0040] Optionally, the main experimental device further includes: a power supply, which is electrically connected to the optical component.

[0041] Compared with the prior art, the above technical solution provided by the present invention has at least the following beneficial effects:

[0042] The industrial methanol potassium permanganate experimental system of the present invention uses a photomultiplier tube to detect light intensity data of light passing through a sample colorimetric tube and a standard solution colorimetric tube in real time, and converts the light intensity data into absorbance. When the absorbances of the two are the same, a controller controls a timer to automatically stop timing, thereby eliminating the need for an operator to observe the color change of the solution in the sample colorimetric tube with naked eyes for manual timing. The timing result is not affected by external light and individual differences of analysts, thereby improving the accuracy and precision of the experimental result. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic diagram of an industrial methanol potassium permanganate experimental system according to an embodiment of the present invention;

[0044] Figure 2 for Figure 1 Schematic diagram of optical components of industrial methanol potassium permanganate experimental system shown;

[0045] Figure 3 for Figure 1 Schematic diagram of a closed water tank of an industrial methanol potassium permanganate experimental system shown;

[0046] Figure 4 for Figure 3 A top view of the closed water tank shown;

[0047] Figure 5 for Figure 1 Schematic diagram of the compressor of the industrial methanol potassium permanganate experimental system shown.

[0048] Reference numerals:

[0049] 1: Main experimental device; 11: Sealed water tank; 1101: Light transmission hole; 12: Optical component; 121: Light source; 122: Concave mirror; 123: Monochromator; 124: Beam splitter; 125: First plane mirror; 126: Second plane mirror; 13: First photomultiplier tube; 14: Second photomultiplier tube; 15: Sample colorimetric tube; 16: Standard solution colorimetric tube; 17: Cooling component; 171: Compressor; 172: Cooling pipeline; 173: Input tube; 174: Output tube; 18: Temperature sensor; 19: Control panel; 110: Power supply; 2: Sample injection device; 21: Piston cylinder; 22: Piston head; 23: Piston rod; 24: Sample bottle; 241: Sample tube; 25: Potassium permanganate reagent bottle; 251: Reagent tube; 26: Liquid inlet tube; 27: Rotary valve; 28: Waste liquid bottle; 281: Waste liquid tube. DETAILED DESCRIPTION

[0050] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0051] Figure 1 This is a schematic diagram of an industrial methanol potassium permanganate experimental system according to an embodiment of the present invention. Figure 1 As shown, the industrial methanol potassium permanganate experimental system includes a main experimental device 1, which includes a closed water tank 11, an optical component 12, a first photomultiplier tube 13, a second photomultiplier tube 14, a controller (not shown) and a timer (not shown). A sample colorimetric tube 15 and a standard solution colorimetric tube 16 are arranged in the closed water tank 11; the optical component 12 emits the same first light beam and second light beam, respectively irradiating the sample colorimetric tube 15 and the standard solution colorimetric tube 16; the first photomultiplier tube 13 is arranged in the closed water tank 11, and is located on the optical path of the first light beam passing through the sample colorimetric tube 15; the second photomultiplier tube 14 is arranged in the closed water tank 11, and is located on the optical path of the second light beam passing through the standard solution colorimetric tube 16; the input end of the controller is communicatively connected to the output end of the first photomultiplier tube 13 and the second photomultiplier tube 14; the control end of the timer is communicatively connected to the output end of the controller.

[0052] When conducting a potassium permanganate experiment, inject a sample and a potassium permanganate solution into the sample colorimetric tube 15, place the sample colorimetric tube 15 in a closed water tank 11, turn on the optical component 12, and start the timer at the same time, then the timer starts timing, the first light beam and the second light beam emitted by the optical component 12 are both directional, so that the first light beam irradiates the sample colorimetric tube 15, and the second light beam irradiates the standard solution colorimetric tube 16, and the two will not interfere with each other. After the first light beam passes through the sample colorimetric tube 15, a part of the light is absorbed, and the remaining light is irradiated to the first photomultiplier tube 13, the first photomultiplier tube 13 detects the first light intensity of the first light beam in real time, and transmits the first light intensity data to the controller in real time; after the second light beam passes through the standard solution colorimetric tube 16, a part of the light is absorbed, and the remaining light is irradiated to the second photomultiplier tube, the second photomultiplier tube 14 detects the second light intensity of the second light beam in real time, and transmits the second light intensity data to the controller in real time. The controller has a conversion formula pre-stored inside, which converts the received first light intensity data into the first absorbance data, converts the received second light intensity data into the second absorbance data, and compares the first absorbance data with the second absorbance data. When the first absorbance data and the second absorbance data are equal, the controller sends a stop signal to the timer to control the timer to stop timing. At this time, the timing result of the timer is the final experimental result of the potassium permanganate experiment, and the length of the timing result represents the amount of reducing impurities in the industrial methanol.

[0053] The industrial methanol potassium permanganate experimental system of the present invention is adopted to detect the light intensity data of the light passing through the sample colorimetric tube 15 and the standard solution colorimetric tube 16 in real time by using a photomultiplier tube, and the light intensity data is converted into absorbance. When the absorbances of the two are the same, the controller controls the timer to automatically stop timing, thereby eliminating the need for the operator to observe the color change of the solution in the sample colorimetric tube 15 with the naked eye for manual timing. The timing result is not affected by external light and individual differences of analysts, thereby improving the accuracy and precision of the experimental result.

[0054] like Figure 1As shown, in this embodiment, the upper cover plate of the sealed water tank 11 is detachably connected to the lower box body, so that the colorimetric tube can be placed in the sealed water tank 11. At least two support frames (not shown) are fixed in the sealed water tank 11. The sample colorimetric tube 15 and the standard solution colorimetric tube 16 are respectively connected to a support frame to be upright and fixed in the sealed water tank 11, and the water in the sealed water tank 11 completely submerges the colorimetric tube. In order to allow the first light beam and the second light beam emitted by the optical component 12 to irradiate into the sealed water tank 11, two light transmission holes 1101 are opened on the sealed water tank 11, and quartz glass is installed at the light transmission holes 1101. The two light transmission holes 1101 are located in the optical path of the first light beam and the second light beam. The sample colorimetric tube 15 is located in the optical path of the first light beam, and the standard solution colorimetric tube 16 is located in the optical path of the second light beam. The first photomultiplier tube 13 and the second photomultiplier tube 14 are respectively installed on the side walls of the closed water tank 11, so that the first light beam passes through the sample colorimetric tube 15 and then irradiates the first photomultiplier tube 13, and the second light beam passes through the standard solution colorimetric tube 16 and then irradiates the second photomultiplier tube 14. The photomultiplier tube is a mature prior art, and its working principle of detecting light intensity is not repeated here. The controller calculates and obtains absorbance data based on the light intensity data, and controls the control logic of the timer to stop timing based on the comparison result of the two absorbance data. This can be achieved according to the existing mature algorithm, and its specific working principle is not repeated here.

[0055] According to the actual application, the optical component 12 can adopt any combination of optical devices, as long as it can emit the same multiple beams. There can also be multiple sample colorimetric tubes 15, and accordingly, the optical component 12 needs to emit multiple beams of light that match the number, and the number of photomultiplier tubes is adjusted accordingly. Each sample colorimetric tube 15 is provided with a corresponding photomultiplier tube, and the timer is used to time each sample colorimetric tube 15 respectively. The controller controls the timer to stop the timing of different sample colorimetric tubes 15 according to the difference between the absorbance of each sample colorimetric tube 15 and the absorbance of the standard solution colorimetric tube 16, thereby obtaining the experimental timing result corresponding to each sample colorimetric tube 15.

[0056] Figure 2 for Figure 1 The schematic diagram of the optical components of the industrial methanol potassium permanganate experimental system is shown in FIG. Figure 2As shown, optionally, the optical component 12 includes a light source 121, a concave mirror 122, a monochromator 123, a beam splitter 124, a first plane mirror 125, and a second plane mirror 126. The concave mirror 122 is located on the optical path of the light source 121; the monochromator 123 is located on the reflected optical path of the concave mirror 122; the beam splitter 124 is located on the optical path of the light passing through the monochromator 123, and the light is divided into the same first light and second light after passing through the beam splitter 124; the first plane mirror 125 is located on the optical path of the first light, and the first light is reflected by the first plane mirror 125 to form a first light beam; the second plane mirror 126 is located on the optical path of the second light, and the second light is reflected by the second plane mirror 126 to form a second light beam. This arrangement simplifies the structural composition of the optical component 12 and facilitates experimental operation.

[0057] like Figure 2 As shown, in this embodiment, the light source 121 irradiates the concave mirror 122, and the concave mirror 122, the monochromator 123 and the beam splitter 124 are arranged along a straight line. The light source 121 uses a tungsten lamp to provide continuous radiation light, which is preheated before the experiment. The concave mirror 122 is used for focusing, and the focused light beam enters the monochromator 123. A grating can be used as the monochromator 123. After passing through the monochromator 123, the required single wavelength light is separated, and then irradiated to the beam splitter 124, and a beam of light is divided into a first light beam and a second light beam of the same angle. The first light beam irradiates the first plane mirror 125, and after adjusting the optical path, a first light beam that can irradiate the sample colorimetric tube 15 is formed. The second light beam irradiates the second plane mirror 126, and after adjusting the optical path, a second light beam that can irradiate the standard solution colorimetric tube 16 is formed. In order to improve the integration of the experimental system, the optical component 12 can be placed in an optical box as a whole, and holes can be opened at the optical path positions corresponding to the first light beam and the second light beam so that the light beams can be smoothly emitted. Depending on the actual application, the light source 121 may also use a deuterium lamp or the like.

[0058] Optionally, the industrial methanol potassium permanganate experimental system further comprises a sample injection device 2, which comprises a piston cylinder 21, a piston head 22, a piston rod 23, a sample bottle 24, a potassium permanganate reagent bottle 25, a liquid inlet pipe 26 and a rotary valve 27. The piston cylinder 21 is provided with a liquid inlet; the piston head 22 is provided in the piston cylinder 21; the piston rod 23 is fixedly connected to the piston head 22, driving the piston head 22 to reciprocate in the piston cylinder 21; the sample bottle 24 is connected with a sample tube 241; the potassium permanganate reagent bottle 25 is connected with a reagent tube 251; the first end of the liquid inlet pipe 26 penetrates the closed water tank 11 and is connected with the sample colorimetric tube 15; the rotary valve 27 is provided with an input port and an output port, the input port is connected with the liquid inlet of the piston cylinder 21, and the output port can be connected with the second end of the sample tube 241, the reagent tube 251 or the liquid inlet pipe 26 by rotating the rotary valve 27. With this arrangement, the rotary valve 27 can be rotated so that the output port of the rotary valve 27 is connected to the sample tube 241, the reagent tube 251 or the liquid inlet tube 26 respectively, that is, the piston cylinder 21 is connected to the sample bottle 24, the potassium permanganate reagent bottle 25 and the sample colorimetric tube 15 respectively. Therefore, the sample and the potassium permanganate solution can enter the piston cylinder 21 and be output to the sample colorimetric tube 15 by pulling out or pushing the piston rod 23, thereby eliminating the process of injecting the sample and the potassium permanganate solution into the sample colorimetric tube 15, then opening the sealed water tank 11, and then placing the sample colorimetric tube 15 in the sealed water tank 11. The experiment is sealed throughout the whole process, and there is no need to open the sealed water tank 11 to prevent the potassium permanganate from being exposed to strong light. In addition, the experimental process is sealed, environmentally friendly and safe, which minimizes the contact between analysts and methanol and reduces the potential safety risks of contact between people and methanol.

[0059] like Figure 1As shown, in this embodiment, the piston cylinder 21 is a hollow cylinder, with a liquid inlet with a small opening at the upper end, which is connected to the input port of the rotary valve 27, and the lower end is open. The piston head 22 is made of sealing materials such as rubber, and is closely fitted with the inner wall of the piston cylinder 21. The piston rod 23 is fixedly connected to the lower surface of the piston head 22. During the experiment, the rotary valve 27 is rotated to make the output port of the rotary valve 27 communicate with the sample tube 241, and the piston rod 23 is pulled downward to drive the piston head 22 to move downward. Then, under the action of the pressure difference, the sample solution in the sample bottle 24 enters the piston cylinder 21 through the sample tube 241 and the rotary valve 27. After a certain amount is drawn out, the rotary valve 27 is rotated to make the output port of the rotary valve 27 communicate with the reagent tube 251, and the piston rod 23 is continuously pulled downward to drive the piston head 22 to continue to move downward. Then, under the action of the pressure difference, the potassium permanganate solution in the potassium permanganate reagent bottle 25 enters the piston cylinder 21 through the reagent tube 251 and the rotary valve 27, and mixes with the sample solution in the piston cylinder 21. After a certain amount of potassium permanganate solution is extracted, the rotary valve 27 is rotated to connect the output port of the rotary valve 27 with the liquid inlet pipe 26, and the piston rod 23 is pushed upward, driving the piston head 22 to move upward, and the mixed solution of the sample and potassium permanganate in the piston cylinder 21 is pushed into the sample colorimetric tube 15 in the closed water tank 11 through the liquid inlet pipe 26. When the mixed solution is pushed into the sample colorimetric tube 15, the optical component 12 is started to emit a light beam, and the timer is started to start timing.

[0060] Optionally, the sample injection device 2 further includes a waste liquid bottle 28, which is connected to a waste liquid pipe 281, and the output port can be connected to the waste liquid pipe 281 by rotating the rotary valve 27. With this arrangement, before the sample and potassium permanganate are drawn into the piston cylinder 21 for mixing, the sample can be drawn into the piston cylinder 21 first, and after replacing the gas in the sample tube 241, the sample can be pushed into the waste liquid bottle 28. After the experiment is over, the mixed solution in the sample colorimetric tube 15 can be drawn and discharged into the waste liquid bottle 28, eliminating the need to open the sealed water tank 11 to manually pour out the mixed solution in the sample colorimetric tube 15.

[0061] like Figure 1As shown, when conducting the experiment, the rotary valve 27 is rotated to connect the output port of the rotary valve 27 with the sample tube 241, and the piston rod 23 is pulled outward to extract the sample solution in the sample bottle 24 to the piston cylinder 21 through the sample tube 241. Then, the rotary valve 27 is rotated to connect the output port of the rotary valve with the waste liquid tube 281, and the piston rod 23 is pushed to push the sample solution in the piston cylinder 21 into the waste liquid bottle 28. This is repeated three times to replace the gas in the sample tube 241. After the replacement is completed, the output port of the rotary valve 27 is connected to the sample tube 241, and the sample solution in the sample bottle 24 is extracted to the piston cylinder 21 by pulling the piston rod 23, and then the rotary valve 27 is rotated to connect the output port of the rotary valve 27 with the reagent tube 251, and the potassium permanganate solution in the potassium permanganate reagent bottle 25 is extracted to the piston cylinder 21 by pulling the piston rod 23, and the two are mixed in the piston cylinder 21, and then the rotary valve 27 is rotated to connect the output port of the rotary valve 27 with the liquid inlet pipe 26, and the piston rod 23 is pushed to push the mixed solution in the piston cylinder 21 into the sample colorimetric tube 15, and the timer starts timing. After the experiment is completed, the piston rod 23 is pulled to extract the solution after the experiment in the sample colorimetric tube 15 into the piston cylinder 21, and then the rotary valve 27 is rotated to connect the output port of the rotary valve 27 with the waste liquid pipe 281, and the piston rod 23 is pushed to push the solution in the piston cylinder 21 into the waste liquid bottle 28. Then, rotate the rotary valve 27 so that the output port of the rotary valve 27 is connected to the sample tube 241, and the sample solution in the sample bottle 24 is drawn out into the piston cylinder 21. Then, rotate the rotary valve 27 so that the output port of the rotary valve 27 is connected to the liquid inlet pipe 26, and the sample solution is discharged into the sample colorimetric tube 15. The liquid inlet pipe 26 and the sample colorimetric tube 15 are cleaned, and the sample solution is drawn back into the piston cylinder 21. Then, rotate the rotary valve 27 so that the output port of the rotary valve 27 is connected to the waste liquid pipe 281, and the cleaned sample solution is discharged into the waste liquid pipe 281. The cleaning process is repeated twice to fully clean and facilitate the next experiment.

[0062] Optionally, a liquid level sensor (not shown) is installed in the sample colorimetric tube 15, and the output end of the liquid level sensor is communicatively connected to the input end of the controller. When the liquid level sensor is set to monitor that the liquid level in the sample colorimetric tube 15 reaches a certain height, the controller can control the timer to start timing, eliminating the need for manual control of the timing start timing.

[0063] The liquid level sensor monitors the liquid level data in the sample colorimetric tube 15 in real time and transmits the liquid level data to the controller. When the sample solution and the potassium permanganate solution are mixed in the piston cylinder 21 and transported to the sample colorimetric tube 15, the liquid level continues to rise. When the liquid level data received by the controller is greater than or equal to the internally pre-stored height threshold, it indicates that the mixed solution in the sample colorimetric tube 15 has been filled. At this time, the controller sends a start signal to the timer to control the timer to start timing. The controller controls the control logic of the timer to start according to the change of the liquid level data, which can be realized according to the existing mature algorithm, and its specific working principle will not be repeated here.

[0064] Optionally, the experimental device further includes a cooling component 17 and a temperature sensor 18. The cooling component 17 is used to cool the closed water tank 11; the temperature sensor 18 is arranged in the closed water tank 11; the input end of the controller is communicatively connected with the output end of the temperature sensor 18, and the output end of the controller is communicatively connected with the control end of the cooling component 17. The methanol potassium permanganate experiment needs to be carried out within a certain temperature range, and this setting can ensure that the temperature in the closed water tank 11 is controlled within a reasonable range.

[0065] The temperature of the methanol potassium permanganate experiment is generally controlled at 15±0.2°, which is lower than the normal room temperature. Therefore, the cooling component 17 is selected to maintain the temperature of the closed water tank 11. The temperature sensor 18 monitors the temperature in the closed water tank 11 in real time, and transmits the monitored temperature data to the controller in real time. The controller outputs an adjustment signal to the cooling component 17 according to the change of the temperature data to adjust the operating power of the cooling component 17. The cooling component 17 can use any structural combination, as long as it can cool the closed water tank 11 and maintain the closed water tank 11 within the required temperature range. The control logic of the controller adjusting the operating power of the cooling component 17 according to the change of the temperature data can be realized according to the existing mature algorithm, and its specific working principle will not be repeated here.

[0066] Figure 3 for Figure 1 Schematic diagram of a closed water tank of an industrial methanol potassium permanganate experimental system shown; Figure 4 for Figure 3 A top view of the closed water tank shown; Figure 5 for Figure 1 The schematic diagram of the compressor of the industrial methanol potassium permanganate experimental system is shown in FIG. Figure 3-Figure 5As shown, optionally, the cooling assembly 17 includes a compressor 171 and a cooling pipeline 172. The inlet of the compressor 171 is connected to the input pipe 173, the outlet of the compressor 171 is connected to the output pipe 174, and the control end of the compressor 171 is communicatively connected to the output end of the controller; the cooling pipeline 172 is arranged in the sealed water tank 11, the first end of the cooling pipeline 172 is connected to the input pipe 173, and the second end of the cooling pipeline 172 is connected to the output pipe 174. A cooling medium is injected into the cooling pipeline 172, and the cooling medium circulates in the loop formed by the cooling pipeline 172, the input pipe 173, the compressor 171 and the output pipe 174. When flowing through the cooling pipeline 172, the cooling medium absorbs the heat in the sealed water tank 11 to cool the sealed water tank 11. When flowing through the compressor 171, the heat is released and the temperature of the compressor 171 is reduced so as to absorb the heat in the sealed water tank 11 again. In this way, the temperature in the sealed water tank 11 is maintained at the required temperature. The compressor 171 receives the adjustment signal from the controller to adjust the operating power in real time according to the temperature change in the closed water tank 11.

[0067] like Figure 3-Figure 5 As shown, two cooling pipes 172 are arranged in the sealed water tank 11, which are arranged in parallel at the front and rear sides of the sealed water tank 11, and the sample colorimetric tube 15, the standard solution colorimetric tube 16 and the temperature sensor 18 are arranged between the two cooling pipes 172. The compressor 171, the input pipe 173 and the output pipe 174 are independently arranged outside the sealed water tank 11, and can also be integrated into a box body, the input pipe 173 and the output pipe 174 both penetrate the sealed water tank, the first ends of the two cooling pipes 172 are respectively connected to an input pipe 173, and the two input pipes 173 are both connected to the inlet of the compressor 171, and the second ends of the two cooling pipes 172 are respectively connected to an output pipe 174, and the two output pipes 174 are both connected to the outlet of the compressor 171.

[0068] Optionally, the main experimental device 1 further includes a display screen (not shown), which is communicatively connected to the output end of the controller. By setting up the display screen, the first light intensity data monitored by the first photomultiplier tube 13, the first absorbance data converted from the first light intensity data, and the second light intensity data monitored by the second photomultiplier tube 14, the second absorbance data converted from the second light intensity data can be visually observed, and the timing result of the timer can also be visually viewed.

[0069] Optionally, the main experimental device 1 further includes a control panel 19, a display screen is installed on the control panel 19, and the control panel 19 is communicatively connected with the controller. The control panel 19 is provided, and the display screen and the controller are integrated, and buttons are installed on the control panel, which can control the start of the optical component 12 and the timer, thereby improving the integration of the experimental system.

[0070] like Figure 1As shown, in this embodiment, the optical assembly 12 is integrated into the optical box, and the control panel 19 is installed on the side of the optical box.

[0071] Optionally, the main experimental device 1 further includes a power supply 110, which is electrically connected to the optical component 12. The power supply 110 is provided to provide real-time power to the optical component 12. When the experimental system includes a compressor 171, the power supply 110 can also supply power to the compressor 171.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An industrial methanol potassium permanganate experimental system, characterized in that: The main experimental device comprises: A sealed water tank, wherein a sample colorimetric tube and a standard solution colorimetric tube are arranged in the sealed water tank; An optical component, wherein the optical component emits the same first light beam and second light beam to illuminate the sample colorimetric tube and the standard solution colorimetric tube respectively; A first photomultiplier tube, which is disposed in the sealed water tank and is located on an optical path where the first light beam passes through the sample colorimetric tube; A second photomultiplier tube, the second photomultiplier tube is disposed in the sealed water tank and is located on the optical path of the second light beam passing through the standard solution colorimetric tube; A controller, wherein an input end of the controller is communicatively connected with output ends of the first photomultiplier tube and the second photomultiplier tube; A timer, wherein a control end of the timer is communicatively connected with an output end of the controller.

2. The industrial methanol potassium permanganate experimental system according to claim 1, characterized in that: The optical assembly comprises: light source; A concave mirror, wherein the concave mirror is located on the optical path of the light source; A monochromator, the monochromator being located on the reflected light path of the concave mirror; A beam splitter, the beam splitter is located on the optical path of the light passing through the monochromator, and the light is split into a first light and a second light after passing through the beam splitter; a first plane mirror, wherein the first plane mirror is located on the optical path of the first light, and the first light forms the first light beam after being reflected by the first plane mirror; A second plane mirror, wherein the second plane mirror is located on the optical path of the second light ray, and the second light ray is reflected by the second plane mirror to form the second light beam.

3. The industrial methanol potassium permanganate experimental system according to claim 1 or 2, characterized in that: Also included is a sample injection device, the sample injection device comprising: A piston cylinder, wherein the piston cylinder is provided with a liquid inlet; A piston head, wherein the piston head is disposed in the piston cylinder; A piston rod, the piston rod is fixedly connected to the piston head and drives the piston head to move back and forth in the piston cylinder; A sample bottle, wherein the sample bottle is connected to a sample tube; A potassium permanganate reagent bottle, wherein the potassium permanganate reagent bottle is connected to a reagent tube; A liquid inlet pipe, a first end of which passes through the closed water tank and is connected to the sample colorimetric tube; A rotary valve is provided with an input port and an output port, wherein the input port is connected to the liquid inlet of the piston cylinder, and by rotating the rotary valve, the output port can be connected to the second end of the sample tube, the reagent tube or the liquid inlet tube.

4. The industrial methanol potassium permanganate experimental system according to claim 3 is characterized in that: The sample injection device also includes: A waste liquid bottle is connected to a waste liquid pipe, and the output port can be connected to the waste liquid pipe by rotating the rotary valve.

5. The industrial methanol potassium permanganate experimental system according to claim 3 is characterized in that: A liquid level sensor is installed in the sample colorimetric tube, and an output end of the liquid level sensor is communicatively connected with an input end of the controller.

6. The industrial methanol potassium permanganate experimental system according to claim 1 or 2, characterized in that: The main experimental device also includes: A cooling assembly, the cooling assembly is used to cool the closed water tank; A temperature sensor, wherein the temperature sensor is disposed in the sealed water tank; The input end of the controller is communicatively connected to the output end of the temperature sensor, and the output end of the controller is communicatively connected to the control end of the cooling component.

7. The industrial methanol potassium permanganate experimental system according to claim 6, characterized in that: The cooling assembly comprises: A compressor, wherein the inlet of the compressor is connected to the input pipe, the outlet of the compressor is connected to the output pipe, and the control end of the compressor is communicatively connected to the output end of the controller; A cooling pipeline is arranged in the closed water tank, a first end of the cooling pipeline is connected to the input pipe, and a second end of the cooling pipeline is connected to the output pipe.

8. The industrial methanol potassium permanganate experimental system according to claim 1 or 2, characterized in that: The main experimental device also includes: A display screen is communicatively connected to an output end of the controller.

9. The industrial methanol potassium permanganate experimental system according to claim 8, characterized in that: The main experimental device also includes: A control panel, the display screen is mounted on the control panel, and the control panel is communicatively connected with the controller.

10. The industrial methanol potassium permanganate experimental system according to claim 1 or 2, characterized in that: The main experimental device also includes: A power source is electrically connected to the optical component.

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