CN110132869B - Measuring device for rapidly detecting demulsification degree of emulsion and using method thereof - Google Patents

Measuring device for rapidly detecting demulsification degree of emulsion and using method thereof Download PDF

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CN110132869B
CN110132869B CN201910534486.XA CN201910534486A CN110132869B CN 110132869 B CN110132869 B CN 110132869B CN 201910534486 A CN201910534486 A CN 201910534486A CN 110132869 B CN110132869 B CN 110132869B
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emulsion
emulsified liquid
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test
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CN110132869A (en
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董耀华
熊康
刘城淼
吴泽奇
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Shanghai Maritime University
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Shanghai Maritime University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59Transmissivity
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106General arrangement of respective parts
    • G01N2021/0112Apparatus in one mechanical, optical or electronic block

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Abstract

The invention discloses a measuring device for rapidly detecting demulsification degree of emulsion and a using method thereof, wherein the device comprises: the main body box is divided into two same accommodating spaces by a partition plate arranged in the main body box; the test solution containers are respectively arranged in the two accommodating spaces and are respectively used for accommodating the new emulsified solution and the old emulsified solution; the laser processing devices are respectively arranged in the two accommodating spaces and comprise laser transmitters and laser receivers which are correspondingly arranged on two sides of the test solution container; and a control system. The invention selects laser with proper wavelength to scan and analyze the test solution, and the light transmittance results of the new emulsion and the old emulsion are compared through photoelectric conversion and mathematical interpolation analysis to obtain the demulsification degree of the old emulsion. The measuring device is small and exquisite and simple, is simple and convenient to operate, can adapt to the measurement of the demulsification degree of the emulsion in different ranges, has better analysis result real-time performance, small error and high efficiency, and can adapt to the measurement of the demulsification degree of different emulsion concentrations.

Description

Measuring device for rapidly detecting demulsification degree of emulsion and using method thereof
Technical Field
The invention belongs to the technical field of emulsion demulsification degree measurement, and particularly relates to a measuring device for rapidly detecting emulsion demulsification degree and a using method thereof.
Background
At present, water-in-oil type emulsion and oil-in-water type emulsion are adopted as industrial emulsions in China, and the latter emulsion is widely applied to the field of industrial cutting and the field of using as a lubricant and the like. In the practical process, the inevitable phenomenon is that the oil-in-water emulsion is subjected to too high local heat due to the friction of local workpieces in the using process, the emulsion breaking phenomenon is encountered, the thin film of oil-in-water emulsion droplets is damaged, the oil-water separation condition is caused, the lubricating and cooling performances of the oil-in-water emulsion are greatly reduced, and the oil-in-water emulsion cannot be reused, and the obvious phenomenon is that the color of the used emulsion is not uniform, and a plurality of small bubbles in the emulsion oxidize the emulsion, so that the performance of the emulsion is weakened.
The reason for this was analyzed by extensive investigations and we found that the emulsifying properties could be restored by adding some emulsifiers. However, since the degree of the emulsion performance of the part of the emulsion lost after being used cannot be measured in the existing industrial field, more and less additive amount of the emulsion is a great problem.
It is reported that the addition content of the emulsifier has a great linear relationship with the performance of the emulsion. However, with the addition of the emulsifier, the working performance of the emulsion is gradually improved, but is not improved after reaching a certain peak value, and the internal structure of the emulsion is changed, so that the emulsion cannot reach the working performance. The reason is probably that when the emulsifier is not available or a certain due emulsifier is lost, the oil-water emulsion can be demulsified to a certain extent, so that the oil-water separation of the emulsion is caused, and the quality of the emulsion is further caused, so that the industrial operation cannot be carried out.
It is also mentioned in the literature that the loss of some surfactants in the emulsion causes demulsification, and the essential reason is that the demulsification degree of the emulsion is not known enough, and the addition of proper amount of emulsifier or corresponding additives or stock solution cannot be controlled, so that redundant discharge waste is caused. Not only increases the cost of industrial investment, but also increases the cost of waste liquid treatment, and also generates unavoidable pollution to the environment to a certain extent.
Relatively few studies are made at home and abroad on the measuring method of the demulsification degree. The standards GB/T7305-2003 and SH/T0191-1992 are too single to design for the multiple water inlet and oil-water ratio of oil products and the temperature in the experimental process, and do not meet the actual situation.
Therefore, it is necessary to develop an automatic measuring device and a measuring method for the demulsification degree of an emulsion.
Disclosure of Invention
The invention aims to solve the defects of the existing demulsification measuring technology and provides a method and equipment for rapidly measuring the demulsification degree of an emulsion so as to realize real-time measurement of the demulsification degree of the emulsion, and the method and equipment have the advantages of simple measuring operation process, small error and high efficiency.
In order to achieve the above object, the present invention provides a measuring device for rapidly detecting the demulsification degree of an emulsion, comprising:
the main body box is divided into two same accommodating spaces by a partition plate arranged in the main body box;
the test solution containers are respectively arranged in the two accommodating spaces and are respectively used for accommodating the new emulsified solution and the old emulsified solution;
the laser processing devices are respectively arranged in the two accommodating spaces and comprise laser transmitters and laser receivers which are correspondingly arranged on two sides of the test solution container; preferably, the correspondingly arranged laser receiver is closer to the test solution container than the laser emitter; and
the control system is electrically or signal connected with the laser processing device;
the new emulsified liquid is a new emulsified liquid which is uniformly distributed and is used as a reference liquid, and the old emulsified liquid is a demulsifying emulsified liquid to be detected.
Preferably, the measuring device further comprises: and the display device is connected with the control system.
Preferably, the display device comprises an LCD display screen or an LED display screen.
Preferably, the test solution container is a laboratory dish.
Preferably, the experiment dish is movably fixed through a clamping groove formed in the wall of the main body box and the partition wall.
Preferably, the laser transmitter comprises a plurality of laser transmitting probes, the laser receiver comprises a plurality of laser receiving probes, and the laser transmitting probes and the laser receiving probes on two sides of the same test solution container are in one-to-one correspondence.
Preferably, the measuring device further comprises: and the temperature control device is used for controlling the temperature of the test solution container.
Preferably, the measuring device further comprises: and the box cover is used for preventing ambient light interference.
The invention also provides a use method of the measuring device for rapidly detecting the demulsification degree of the emulsion, which comprises the following steps:
step 1, taking out the test solution container, and respectively containing new emulsified liquid and old emulsified liquid;
step 2, respectively installing the test solution containers in the two accommodating spaces, and adjusting the temperature to a required temperature through a temperature control device;
step 3, opening the laser processing device through a control system, and performing laser spectral scanning on the new emulsified liquid or the old emulsified liquid to determine the wavelength of the maximum absorption peak;
step 4, setting the wavelength of the maximum absorption peak as a laser test wavelength in the laser emitter, and carrying out light transmittance test on the new emulsified liquid and the old emulsified liquid: the laser signal emitted by the laser emitter is received by the laser receiver after passing through the new emulsified liquid or the old emulsified liquid, the laser receiver carries out photoelectric signal conversion on the received laser signal and transmits the converted laser signal to the control system, and the control system carries out light transmittance comparison, calculation and analysis to obtain a demulsification degree value.
Preferably, step 4 further comprises: and before the light transmittance of the new emulsified liquid and the old emulsified liquid is tested, a box cover is covered on the main box.
According to the Lambert-Beer law, a light beam in a certain wavelength band passes through a solution, and then a part of the light beam is absorbed and a part of the light beam passes through the solution. Some color changes of the suspension occur or are deep or shallow depending on the breakdown of oil-in-water molecules that may occur after the emulsion breaks. The former dress emulsion before will using is contained on the experimental ware of fixed stop one end, and the experimental ware of the other end is used for containing the emulsion that emulsion performance takes place to destroy after using, treats that solution is stable back, then covers the case lid, and so, laser emitter sends laser through laser emission probe and sees through two kinds of test solutions, and laser receiver then can receive the light after seeing through the test solution through laser receiving probe, need explain that each laser takes place the probe respectively with corresponding laser receiving probe position one-to-one on the main part case. And then recording the light transmission condition of the light emitted by each corresponding laser emitter after transmitting through the solution in the system by a photoelectric conversion principle. It should be noted that a plurality of laser emitters are provided, and each laser emitter corresponds to a laser emitting point which penetrates through the test dish. Due to the good uniformity and emulsifying property of the new emulsion, the difference of the light transmittance of the laser emitted by the corresponding laser emitter outside the new emulsion test vessel and passing through each part of the test solution at the corresponding position of the new emulsion test vessel is very small; the other side of the test dish is the test solution after demulsification, and some solvents and organic substances in the test solution have certain quality change or quantity change, so that the light transmittance of each point after the laser passes through the test dish is certain difference compared with the light transmittance of the laser passing through the new emulsion. The light transmittance of each point is compared with that of the stock solution, a light transmittance curve analysis graph of each point is made, and the deviation degree of each point of the new emulsion and the old emulsion can be obtained through mathematical interpolation calculation so as to obtain the demulsification degree of the emulsion. The maximum demulsification degree value is the value when the oil-water separation is the most complete after the corresponding solution to be measured is completely demulsified, so the measured value is between the complete demulsification degrees of the new emulsion and the new emulsion, and the complete demulsification degree value is the measured value at the position with the largest light transmittance deviation measured at a certain laser probe. The method is characterized in that the light transmittance is recorded at a certain moment by a laser generator in a solution, and the solution has fluidity, so that the deviation condition can be recorded again at intervals of a short time, so that in order to prevent the occurrence of the accidental deviation degree of one condition, the test times are at least three times of test results according to a common theory, if the deviation degree of the light transmittance measured each time is almost not different, the possibility that the accidental occurrence is avoided by the test data is shown, and the average measurement result is obtained.
It should be noted that the more the number of laser emitting points, the more accurate the test result and the higher the accuracy, which is not described herein but still within the scope of the present invention, are known from the mathematical interpolation analysis. Another remark is related to the selection of the wavelength band in which the laser emitter emits laser light: the novel emulsion can be subjected to laser spectral scanning in advance, and the wavelength of the maximum absorption peak of the novel emulsion is taken out to serve as the subsequent laser test wavelength generally, because the detection sensitivity is highest at the moment, and the demulsification degree result which can be measured finally is more accurate.
It should be noted that, if the concentration of the emulsion is too high, the situation that light transmission is difficult may exist, so the emulsion can be diluted by a certain proportion before measurement, then the premise is that the new liquid with the lowest demulsification degree and the test liquid with the demulsification degree to be measured need to be diluted by a corresponding proportion, deionized water is preferably selected, and then the upper and lower limits of the demulsification degree are obtained according to the deviation degree of the light transmittance.
In addition, a temperature control device is arranged below the test dish, so that the Brownian motion speed of different emulsions can be changed, and the measurement temperature of the test solution can also be changed. However, the measurement temperature settings of the new emulsion and the emulsion to be tested for demulsification degree are consistent, and the measurement is generally carried out at room temperature. And after one liquid to be detected is measured each time, if another liquid to be detected is measured, taking out the test dish, cleaning, and replacing with new liquid to be detected.
The invention has the following beneficial effects:
(1) the device has small and simple volume and simple test operation process.
(2) The method can be suitable for measuring the demulsification degree of the emulsion in different ranges, and has the advantages of small error of results, better instantaneity of analysis results and high efficiency.
(3) The measuring result is low in contingency, can adapt to the measurement of demulsification degrees of different emulsion concentrations, and can ensure the accuracy of the measuring result through temperature control.
(4) Automatic measurement is realized through photoelectric conversion control, and labor consumption is low.
Drawings
FIG. 1 is a schematic structural diagram of a measuring device for rapidly detecting the demulsification degree of an emulsion according to the present invention;
FIG. 2 is a schematic structural diagram of another measuring device for rapidly detecting the demulsification degree of an emulsion according to the present invention;
fig. 3 is a top view of fig. 2.
Wherein, each sequence number in the figure represents:
a main body case 1; a laser emitter 2/4; a laser receiver 3/5; a laser emission probe 6; a laser receiving probe 7; a test dish 8; a temperature control device 9; a control system 10; a digital display control screen 11; a case cover 12; a card slot 13.
Detailed Description
In the following description of the embodiments, for the purposes of clearly illustrating the structure and operation of the present invention, reference will be made to a number of directional terms, however, the terms "middle", "outside", "inside", "downward", "below" and the like should be construed as convenience and should not be construed as limiting terms.
In the following description of the specific embodiments, it is to be understood that the terms "intermediate," "outer," "inner," "downward," "below," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention.
The invention is characterized in that the two same containing spaces are respectively provided with a test solution container, two sides of each test solution container are respectively provided with a laser transmitter and a laser receiver, each laser transmitting probe of the laser transmitter is respectively in one-to-one correspondence with each laser receiving probe of the laser receiver, namely, the laser signal transmitted by each laser transmitting probe is received by the corresponding laser receiving probe.
The movable fixing means that the test vessel can be detached and freely taken out, and can also be fixed on the clamping groove when needed.
In the present invention, the "Lambert-beer law" means lg (1/T) ═ KDL, where T is the light transmittance and K is the molar extinction coefficient (depending on the nature of the light absorbing substance, the wavelength of the incident light, the temperature, etc.). L is the clear liquid layer thickness and D is a measure directly related to the degree of demulsification.
The invention provides a measuring device for rapidly detecting demulsification degree of emulsion, which comprises:
the main body box is divided into two same accommodating spaces by a partition plate arranged in the main body box;
the test solution containers are respectively arranged in the two accommodating spaces and are respectively used for accommodating the new emulsified solution and the old emulsified solution;
the laser processing devices are respectively arranged in the two accommodating spaces and comprise laser transmitters and laser receivers which are correspondingly arranged on two sides of the test solution container; preferably, the correspondingly arranged laser receiver is closer to the test solution container than the laser emitter; and
the control system is electrically or signal connected with the laser processing device;
the new emulsified liquid is a new emulsified liquid which is uniformly distributed and is used as a reference liquid, and the old emulsified liquid is a demulsifying emulsified liquid to be detected.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Examples
A structure diagram of a device for rapidly detecting emulsion breaking degree refers to fig. 1, fig. 2 and fig. 3, a main body box 1 is a central component, a fixed partition board is arranged in the middle of the main body box 1, and a vertically downward clamping groove 13 is arranged in the middle of the outer side of the partition board; two sections of the inner side of the main body box 1 are also provided with clamping grooves 13, and the positions of the clamping grooves 13 are detailed in a partial top view 3; the test ware 8 (i.e. the test solution container) is fixed through draw-in groove 13 and is placed between main part case 1 inboard and fixed baffle, there are two test wares 8 altogether, see two test wares 8 on a straight line through plan view 3, a test ware 8 can be used for holding former emulsion (i.e. the new liquid emulsion) during measurement, another is used for holding takes place the old liquid of demulsifying (i.e. the old liquid emulsion), here test ware 8 is the cavity, the wall is extremely thin, its inside can be held the liquid of waiting to be measured of thinner thickness, with the light transmissivity of the darker emulsion of adaptation colourity. The laser transmitters 2 and 4 are arranged on one side of the main body box 1 and used for transmitting laser; the laser receivers 3 and 5 are arranged on the other side of the main body box 1 and are used for receiving laser which penetrates through the liquid to be detected. The laser transmitters 2 and 4 are respectively provided with a plurality of laser transmitting probes 6, only a layout in a six-row and five-column form is shown here, and the laser receivers 3 and 5 are also provided with a plurality of laser receiving probes 7 in a corresponding form. Laser emitted by the laser emitting probes 6 in the laser emitters 2 and 4 is transmitted by the old emulsified liquid and the new emulsified liquid respectively, and then signals are received in the laser receiving probes 7 in the laser receivers 3 and 5. Each laser emission probe 6 in each group corresponds to a corresponding laser receiving probe 7, and the distance between the laser receiving probe 7 and the test dish 8 is extremely short, so that the instability of light signals received by the laser receiving probe 7 due to light scattering is prevented. The control system 10 is installed on one side outside the main body box 1 and is used for transmitting and controlling the behaviors of laser emission and signal receiving of the laser emitters 2 and 4 and the laser receivers 3 and 5, and the digital display control screen 11 is further installed on one side of the control system 10. The control system 10 can control and change the laser emission signals in the laser generators 2 and 4, receive the signals obtained by the laser receivers 3 and 5, and display the processed digital signal results on the digital display control screen 11 through photoelectric conversion. The box cover 12 covers the main body box 1 after containing the liquid to be detected, plays a role in shading light and prevents interference with laser emitted by the laser transmitters 2 and 4; two temperature control devices 9 are installed respectively under experimental ware 8, play the effect of the temperature of awaiting measuring liquid in the control experimental ware 8 to satisfy the operating mode needs in the reality and guarantee the stability in the solution test process.
The measuring device of the invention takes the main body box as the center, the two laser transmitters are arranged on one side of the main body box side by side, and the two laser receivers are respectively arranged on the other side of the main body box. It should be noted that the laser transmitter and the laser receiver respectively have a plurality of probes, the probes of the laser transmitter can respectively emit laser beams, the probes of the laser receiver can respectively receive laser beams, fig. 2 shows only one probe in a six-row and five-column arrangement, and other distribution layouts can be designed.
The middle of the main box is provided with a fixed clapboard, the clapboard is arranged in the middle of the inner center of the main box, the two sides of the clapboard of the main box and the middle of the outer shells at the two sides of the box body are respectively provided with a clamping groove, the clamping grooves are used for placing and fixing test vessels, two test vessels are required to be explained, one test vessel is used for containing stock solution with excellent demulsification property, the other test vessel is used for containing old solution with higher demulsification degree, the depth of the contained solution to be measured in the test vessels is required to be at least higher than the position which can be sensed by a laser transmitting and receiving probe, and the distance between the laser receiving probe and the test vessels is required to be explained, so that the received light is prevented from scattering; the test vessel containing the liquid to be tested can be stably and fixedly placed in the main body box through the clamping groove, and is specifically shown in fig. 1.
The test dish 8 is generally of a hexahedral structure, one end of the opening is upward, the length and the width of the test dish are much larger than the thickness of the test dish, so that the thickness of the test liquid which can be contained is naturally thinner, and the test dish can measure emulsion with darker colors.
The test cuvette material was quartz glass, because of its good light transmission.
Temperature control device all installs below two experimental wares for give the test solution heating, the broken emulsification degree of emulsion under the convenient different temperatures of measuring accords with actual conditions needs.
A control system is arranged on one side outside the main box, and one end of the control system is connected with a digital display control screen; it should be noted that the signal transmission of the laser transmitter and the laser receiver is connected with the control system through a circuit and displayed on the digital display control screen. The optimal adaptive absorption degree of absorption peaks of different emulsions (different detection objects) can be obtained by changing light with different wavelength lengths emitted by a light source of the laser emitter, so that the difference value of the absorption peaks of the emulsion stock solution and the old solution to be detected is more obvious, and the error of a measurement result is reduced.
The specific implementation process is as follows: taking out the two test dishes 8, respectively containing the new emulsified liquid and the old liquid subjected to demulsification, wherein the immersion depth of the solution in the test dishes 8 is ensured to ensure that the uppermost laser can pass through the solution, if the chroma of the new emulsified liquid is high and the laser is not easy to penetrate through the new emulsified liquid, diluting the new emulsified liquid by a certain multiple, determining the common dilution multiple according to human eye observation, and performing dilution treatment on all subsequent liquid to be measured by corresponding multiples; then fixing the test solution vessel 8 filled with the solution in the clamping groove 13, and opening the temperature control device 9 to adjust the temperature to the normal room temperature; after the temperature and the solution are stable, a power supply is turned on, a laser emitter 2 or 4 and a laser receiver 3 or 5 which penetrate through the emulsified new liquid are turned on through a digital display control screen, then a control system 10 is controlled through a digital display control screen 11, and the test solution is subjected to laser beam splitting scanning, the Lambert-Beer law (the Lambert-Beer law, which is the basic law of spectrophotometry and is the relation between the intensity of the absorption of a substance to light with a certain wavelength, the concentration of a light absorption substance and the thickness of a liquid layer of the light absorption substance) is taken as the principle, the wavelength of the maximum absorption peak is determined and is taken as the subsequent laser test wavelength, and the laser detection sensitivity is the best at the moment. The light transmittance is measured at the wavelength at which the absorption peak is maximum because the influence of the wavelength change is minimum at this time, and the influence of the wavelength change is large at other wavelengths. Next, the selected wavelength laser is set in the laser emitters 2 and 4, and the light transmittance of the new emulsion and the old emulsion is tested, and before the test, the box cover 12 is covered to prevent the interference of the ambient light. Laser signals simultaneously emitted by the laser transmitters 2 and 4 are transmitted through the old emulsified liquid and the new emulsified liquid, then are received in the laser receivers 3 and 5, are transmitted into a microprocessor of the control system 10 through photoelectric signal conversion, and are compared with the light transmittance of the original liquid (the new emulsified liquid) to make a light transmittance curve analysis diagram of each laser transmission point, and then the light transmittance conditions of the positions corresponding to each laser transmission point of the new and old emulsified liquid can be obtained through numerical interpolation analysis of a computer. Generally, these processed values for the new emulsion are at a relatively close level because the new emulsion is uniform in color; the emulsion after demulsification has a phenomenon of uneven chromaticity, so that the transmittance of each point obtained by the emulsion has a greater or lesser difference, and the numerical value after photoelectric conversion has a larger fluctuation deviation. The size of the demulsification degree of the emulsion is determined by comparing the sizes of the deviations of the new liquid and the old liquid. The magnitude of these variations in the new and old liquids means the deviation between the average value of the new emulsion and the average value of the old emulsion. The maximum demulsification degree can be known as the difference value (the maximum difference value between the new emulsified liquid and the old emulsified liquid) with the maximum interval at a certain point in the demulsification deviation values of the new emulsified liquid and the old emulsified liquid through analysis, so that the measured demulsification degree of the old emulsified liquid is ensured to be between the new emulsified liquid and the emulsified liquid with the maximum demulsification degree. An approximate degree of maximum demulsification can be known by the maximum deviation of a certain laser transmission point, and then the measured degree of demulsification is substantially within this range. This is also a quantitative determination as described above, since there is an upper limit for the old emulsion to the maximum demulsification level, a lower limit for the new emulsion, and other penetration points between the maximum demulsification levels. Certainly, the measured demulsification degree value is only the measured demulsification degree value at a certain moment, and a new demulsification degree value is obtained by recording the laser test in the same process once at intervals of a short time due to the fluidity of the solution; in order to prevent accidental occurrence, three test results can be generally taken, if the difference is not large, the test result is good, and the average value is taken as the final demulsification degree value; if the difference of the test results is large, the influence of temperature or wavelength selection or other factors on the liquid to be tested needs to be considered, and the normal operation generally has no great influence. After the test is finished, the box cover 12 is opened, and the test dish 8 is taken out to be cleaned and disposed. All laser transmitters 2, 4 and all laser receivers 3, 5 are switched off, and finally the power supply is switched off.
In conclusion, the invention utilizes the Lambert-Beer law as a principle, and tests and researches the relationship between the demulsification degree and the light transmittance of the emulsion to verify that a certain linear relationship exists between the demulsification degree and the light transmittance, so that the demulsification degree of the emulsion is obtained according to the light transmittance of the new emulsion and the old emulsion. Specifically, the invention selects laser with proper wavelength to scan and analyze the test solution (new emulsion and old emulsion), and the light transmittance results of the new emulsion and the old emulsion are compared through photoelectric conversion and mathematical interpolation analysis to obtain the demulsification degree of the old emulsion, thereby achieving the purpose of automatic measurement.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.

Claims (8)

1. The utility model provides a measuring device of short-term test emulsion demulsification degree which characterized in that, this measuring device contains:
the main body box is divided into two same accommodating spaces by a partition plate arranged in the main body box;
the test solution containers are respectively arranged in the two accommodating spaces and are respectively used for accommodating the new emulsified solution and the old emulsified solution;
the laser processing devices are respectively arranged in the two accommodating spaces and comprise laser transmitters and laser receivers which are correspondingly arranged on two sides of the test solution container; and
the control system is electrically or signal connected with the laser processing device;
the new emulsified liquid is a new emulsified liquid which is uniformly distributed and is used as a reference liquid, and the old emulsified liquid is a demulsifying emulsified liquid to be detected; the test solution container is an experimental vessel; the correspondingly arranged laser receiver is closer to the test solution container relative to the laser emitter; the laser transmitter comprises a plurality of laser transmitting probes, the laser receiver comprises a plurality of laser receiving probes, and the laser transmitting probes and the laser receiving probes on two sides of the same test solution container are in one-to-one correspondence.
2. The apparatus for rapidly detecting the demulsification degree of an emulsion according to claim 1, wherein the apparatus further comprises: and the display device is connected with the control system.
3. The apparatus according to claim 2, wherein the display device comprises an LCD display or an LED display.
4. The device for rapidly detecting the demulsification degree of the emulsion as claimed in claim 1, wherein the laboratory dish is movably fixed by a clamping groove arranged on the wall of the main body box and the partition wall.
5. The apparatus for rapidly detecting the demulsification degree of an emulsion according to claim 1, wherein the apparatus further comprises: and the temperature control device is used for controlling the temperature of the test solution container.
6. The apparatus for rapidly detecting the demulsification degree of an emulsion according to claim 1, wherein the apparatus further comprises: and the box cover is used for preventing ambient light interference.
7. A method for using the measuring device for rapidly detecting the demulsification degree of the emulsion according to any one of claims 1-6, wherein the method comprises the following steps:
step 1, taking out the test solution container, and respectively containing new emulsified liquid and old emulsified liquid;
step 2, respectively installing the test solution containers in the two accommodating spaces, and adjusting the temperature to a required temperature through a temperature control device;
step 3, opening the laser processing device through a control system, and performing laser spectral scanning on the new emulsified liquid or the old emulsified liquid to determine the wavelength of the maximum absorption peak;
step 4, setting the wavelength of the maximum absorption peak as a laser test wavelength in the laser emitter, and carrying out light transmittance test on the new emulsified liquid and the old emulsified liquid: the laser signal emitted by the laser emitter is received by the laser receiver after passing through the new emulsified liquid or the old emulsified liquid, the laser receiver carries out photoelectric signal conversion on the received laser signal and transmits the converted laser signal to the control system, and the control system carries out light transmittance comparison, calculation and analysis to obtain a demulsification degree value.
8. The method of use of claim 7, wherein step 4 further comprises: and before the light transmittance of the new emulsified liquid and the old emulsified liquid is tested, a box cover is covered on the main box.
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