CN112748236A - Method and device for rapidly detecting stability of heavy marine concocted fuel oil - Google Patents
Method and device for rapidly detecting stability of heavy marine concocted fuel oil Download PDFInfo
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2829—Oils, i.e. hydrocarbon liquids mixtures of fuels, e.g. determining the RON-number
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2805—Oils, i.e. hydrocarbon liquids investigating the resistance to heat or oxidation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses a method for rapidly detecting the stability of heavy marine concocted fuel oil. The invention adopts two temperature-rising aging processes: the ultrasonic aging is carried out for the first time under the low-oxygen atmosphere, and the high oxidation activity in the oxygen-enriched gas is utilized to carry out deep oxidation on the heavy blended fuel oil at high temperature after the temperature is raised for the second time, so that the oxidation is more comprehensive. And through twice aging, the whole-process simulation of the heavy marine fuel oil in an oil storage tank, a settling tank and a daily tank is realized. The method can effectively shorten the aging time, can directly obtain detection data after aging is finished, and effectively shortens the evaluation time.
Description
Technical Field
The invention belongs to the field of detection of the stability of heavy marine concocted fuel oil, and particularly relates to a device and a method for quickly detecting the stability of heavy marine concocted fuel oil.
Background
The domestic refinery marine fuel oil has low yield and large difference with market demand, and seriously influences the development of shipping business in China. The blending technology is utilized to blend some industrial waste oil into the marine fuel oil, which not only can bring considerable economic benefits for Chinese petrochemicals, but also can effectively reduce environmental pollution, and is an effective method for improving the utilization rate of petroleum energy. Driven by the interest, inferior bunker fuel oil prepared from coal tar, waste engine oil, crude aromatic hydrocarbon, vegetable oil, tire rubber oil and the like is discovered in the field of circulation. Incorporation of these complex sources of oil into bunker fuel oil can create instability factors: the pump heating process forms asphaltene or oil sludge, so that the filter screen of the oil separator is blocked, the engine can be seriously corroded and abraded, the ignition quality of fuel oil can be reduced due to high aromatic hydrocarbon oil, and the health of crew and marine environment can be threatened. And each index in the inferior heavy bunker fuel oil meets the limit value in the national standard, so the stability of the concocted fuel oil can not be accurately measured by the conventional detection means, the detection means such as a P value method, a spot test (ASTM-D4740 standard), a K value method (ASTM D7061) and the like are commonly used in the current oil stability detection method, but no unified method for detecting the stability and the concocted compatibility of the fuel oil exists at present. Therefore, how to accurately, rapidly and objectively judge the stability of the blended fuel oil becomes a problem to be solved urgently.
Chinese patent publication No. CN 104764678A entitled "method for determining storage stability of heavy oil" discloses a method for observing change of densimeter at constant temperature by adding a densimeter to a test tube in which a heavy oil is placed. This patent requires that the heavy oil be thermostated for 2 hours before densitometer readings are recorded, then every 8-24 hours for 2-15 consecutive days, with too long a measurement time, and therefore not very useful in the market.
Chinese patent publication No. CN 106556685 a entitled "a method for rapidly detecting storage stability of heavy bunker fuel oil", discloses a gradient viscosity tube for detection, into which oxygen-containing gas is introduced for accelerated oxidation; respectively sampling and detecting from a plurality of different sampling ports, and processing each measured group of data to obtain the property parameters of the fuel oil. According to the patent scheme, 8 data are needed for detecting 4 indexes of each sample, the accumulated time needed by aging time and index measurement time is more than 16 hours, the process is complicated, and the time is relatively long.
Disclosure of Invention
The invention aims to provide a device and a method for quickly detecting heavy marine concocted fuel oil, and solves the problem that the prior device and method for quickly detecting the stability of the heavy marine concocted fuel oil are poor in effect.
The stability detection basis of the heavy marine concocted fuel oil is that the storage and use period of the heavy marine fuel oil or the marine concocted fuel oil takes about 30 days, and the heavy marine fuel oil or the marine concocted fuel oil respectively passes through a storage cabin, a settling cabin (cabinet), an oil distributing machine and a daily cabin (cabinet), wherein an oil product in the settling cabin (cabinet) is heated to 70-80 ℃ and is kept for 24-36 hours; after passing through an oil separator, the mixture is heated to 90-98 ℃ in a daily cabinet for use by an engine. The mixed oil undergoes a secondary temperature rise process for at least 30 hours in the whole process, and then the precipitate in the mixed oil is separated.
The high temperature and the means of enhancing oxidation and the like can lead the heavy bunker fuel oil to age rapidly and lose the stable state in a short time (< 10 hours), thereby simulating the stability change process of the conventional heavy bunker fuel oil. The stability of the blended oil product is judged by judging the micro-pressure change caused by the uneven density layering formed in the heavy marine blended fuel oil.
The invention provides a method for detecting the stability of blended fuel oil in a first aspect, which comprises the following steps:
(1) providing a container, wherein the container is a closed cylinder and comprises a feed inlet for adding fuel oil into the cylinder, an air inlet pipeline for introducing oxygen-containing gas into the cylinder, a heating device for heating the cylinder, an ultrasonic disperser for applying ultrasonic action to the fuel oil and an electronic micro-pressure sensor for measuring high pressure at different positions in the cylinder;
(2) the bunker fuel is filled into the container and the pressure values P at different heights measured at the starting time t0 are recorded0,1、P0,2、…、P0,nWherein n is ≧ 2, the same applies below;
(3) controlling the temperature of the fuel oil sample to be T1, and introducing low-oxygen GAS GAS1 into the fuel oil sample for TO1(ii) a Simultaneously starting an ultrasonic generator to disperse and oxidize the blended oil, standing for a period of time after the gas is introduced, and recording the time t1Measured different-position high pressure value P1,1、P1,2、…、P1,n；
(4) Increasing the temperature of the fuel oil sample to T2, and introducing oxygen-enriched GAS GAS2 into the fuel oil sample for TO2(ii) a After the aeration is finished, the temperature is reduced to T3, and the mixture is kept still for a period of time T1Measured different-position high pressure value P2,1、P2,2、…、P2,n；
(5) And (3) calculating: obtaining an aging value:
in the detection method, the temperature T1 in the step (3) is 30-900 ℃, preferably 50-500 ℃, and more preferably 60-200 ℃.
The low-oxygen GAS GAS1 is a low-oxygen-content GAS, wherein the oxygen content is 10-30% of the oxygen content of the oxygen-enriched GAS in the step (3), and other suitable gases are inert mixed GAS or nitrogen; the introduction amount of the low-oxygen gas is 10-1000 min in terms of gas-oil volume ratio-1Preferably 100 to 500min-1. Time of ventilation tO1Is 0.1 to 10 hours, preferably 0.1 to 4 hours, and more preferably 0.1 to 1.5 hours.
The frequency of the ultrasonic oscillation is 20-100 kHz, preferably 30-60 kHz; the applied power of the material with unit mass (1 kg) is 0.3-1.2 kWh, preferably 0.6-1 kWh.
The temperature T2 in the step (3) is 50-900 ℃, preferably 60-500 ℃, and more preferably 80-250 ℃.
The oxygen-enriched GAS GAS2 is a high-oxidizing GAS, and comprises inert mixed GAS with oxygen content of 50-90%, high-purity oxygen, ozone and other gases with strong oxidizing property. The introduction amount of the oxygen-enriched gas is 10-1000 min in terms of gas-oil volume ratio-1Preferably 100 to 500min-1. Time of ventilation tO1Is 0.1 to 10 hours, preferably 0.1 to 4 hours, and more preferably 0.1 to 1.5 hours.
The temperature T3 in the step (3) is room temperature, and natural cooling is preferred in the cooling process.
In the detection method, the calculation result in the step (4) is used as an evaluation index for detecting the stability of the heavy marine concocted fuel oil, and the larger the aging value in the calculation result is, the worse the stability of the concocted fuel oil is; the greater the average aging rate indicates the faster the deposit of the blended fuel oil and the greater the degree to which the system tends to be unstable. The detection principle of the detection method is that the pressure changes at different depths in the liquid due to the fact that the internal density of the oil changes along with the depth change after the oil is aged. The multi-point electronic micro-pressure sensor is placed in the mixed oil product, when the stability of the oil product is changed due to oxidation, the density in the liquid is changed, the density change is related to the depth of the liquid, and the r at the moment is considered to beLiquid for treating urinary tract infection=f(h). The pressure P = r of the sensor at a certain fixed positionLiquid for treating urinary tract infectiong h=òrLiquid for treating urinary tract infectionghdh=ò f(h)ghdhThe main variable influencing the pressure change is the density integral from the liquid surface to the depth h, and h is the fixed measurement position of the multipoint electronic micro-pressure sensor, so that the pressure measured by the point h can change after the density of the system changes, and the degree of the change can reflect the non-uniform degree in the oil product.
The invention provides a quick detection device for heavy concocted fuel oil in a second aspect.
The device comprises an outer cylinder, an outer cover, an inner cylinder, a gas pipe, a gas distributor, a control device, a thermocouple, a multipoint electronic micro-pressure sensor, an ultrasonic generator and a heating device;
the device comprises an outer cylinder, an inner cylinder and a control device;
a control device is arranged outside the outer cylinder; a heating device and an ultrasonic generator are arranged between the outer cylinder and the inner cylinder, the heating device is used for heating oil in the inner cylinder, and the ultrasonic generator is used for carrying out ultrasonic treatment on the oil in the inner cylinder;
the inner cylinder is used for containing an oil product sample; an electronic micro-pressure sensor, a thermocouple and a gas tube are arranged in the inner cylinder; the electronic micro-pressure sensor is used for measuring the pressure of the oil product sample at different heights and transmitting the signal to the electronic display; the thermocouple is used for measuring the temperature of an oil product to be measured; the gas pipe is used for introducing low-oxygen gas and oxygen-enriched gas into the inner cylinder.
Further, the outer cylinder also comprises an outer cover at the upper part, and the outer cover is used for sealing the upper end of the inner cylinder. The center of the outer cover is provided with a plurality of through holes, and the electronic micro-pressure sensor, the thermocouple and the gas tube respectively penetrate through the through holes to extend into the inner cylinder. The electronic micro-pressure sensor, the thermocouple and the gas pipe are sealed with the outer cover. The outer cover is fastened with the outer cylinder in a threaded, buckling or flange mode and realizes sealing.
Furthermore, the heating device, the ultrasonic generator and the thermocouple are respectively connected with the control device. The electronic micro-pressure sensor is communicated with an electronic display of an external control device.
Furthermore, the inner cylinder also comprises a gas distributor, and an outlet at the lower end of the gas pipe penetrates through the gas distributor and is positioned below the gas distributor.
Furthermore, the outer cover is provided with air dredging holes around the gas pipe. The gas-distributing holes are used for discharging gas in the inner cylinder, and one or a plurality of gas-distributing holes can be arranged.
The heating device can adopt a heating mode which is conventional in the field, such as an electric heating wire or an electric heating rod.
In the invention, the outer cover is fastened with the outer cylinder through threads. The outer cylinder and the outer cover can be made of metal materials or non-metal pressure-resistant materials, and stainless steel is preferred.
The inner cylinder can be made of high-temperature resistant materials such as glass and polytetrafluoroethylene. A scale mark is arranged above the inner part of the inner cylinder, so that the adding height of the oil product is uniformly up to the height; the diameter of the upper edge of the inner cylinder is the same as the outer diameter of the outer cylinder, and the inner cylinder can be suspended in the outer cylinder.
In the invention, the gas distributor is of a disc structure and is connected with the inner wall of the inner cylinder, and the gas distributor is provided with a gas column port and a plurality of gas dispersion holes.
In the invention, the multipoint electronic micro-pressure sensor is a tubular pressure measuring device, the upper end of the multipoint electronic micro-pressure sensor is connected above the outer cover and connected with the electronic display, and the lower end of the multipoint electronic micro-pressure sensor enters the inner cylinder; the shell of the multipoint electronic micro pressure sensor is provided with a plurality of pressure sensitive elements which are distributed on the vertical position and used for monitoring the pressure change of each height point.
In the present invention, the terms "upper end" and "lower end" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. And the technical term "a plurality" means two or more unless explicitly defined otherwise.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts two heating and aging processes to realize the whole-process simulation of the heavy bunker fuel oil in an oil storage cabin, a precipitation cabin (cabinet) and a daily cabin (cabinet). Carrying out ultrasonic aging for the first time in a low-oxygen atmosphere, and mainly dispersing and refining a complex in fuel oil through ultrasonic to ensure that the oxidation area of the complex is larger under the conditions of low oxygen and medium temperature; after the second temperature rise, the heavy blended fuel oil is deeply oxidized at high temperature by utilizing the high oxidation activity in the oxygen-enriched gas, so that the oxidation is more comprehensive.
2. The aging time of the method can be effectively shortened, the aging time of 1-2 hours can be realized at the shortest time, the detection data can be directly obtained after the aging is finished, and the evaluation time is effectively shortened.
3. The aging degree can be directly read and calculated through the pressure change index, and the property of the oil product at each position does not need to be measured again, so that the measuring steps are reduced.
Drawings
FIG. 1 is a schematic diagram of the apparatus for rapidly detecting the stability of heavy blended fuel oil according to the present invention.
The labels in the figure are: 1-outer cylinder, 2-outer cover, 3-inner cylinder, 4-gas tube, 5-gas distributor, 6-control device, 7-thermocouple, 8-multipoint electronic micro-pressure sensor, 9-ultrasonic generator, 10-heating device, 401-gas-dredging hole, 801-electronic display, 802-upper layer pressure sensitive element, 803-middle layer pressure sensitive element and 804-lower layer pressure sensitive element.
FIG. 2 is a schematic view of a gas distributor according to the present invention.
The labels in the figure are: 501-gas dispersion plate, 502-gas column port, 503-gas dispersion port.
Detailed Description
The following describes the rapid detection device and detection method for heavy blended fuel oil according to the present invention with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1-2, the device for rapidly detecting the stability of heavy bunker fuel oil of the present invention comprises: the device comprises an outer cylinder 1, an outer cover 2, an inner cylinder 3, a gas pipe 4, a gas distributor 5, a control device 6, a thermocouple 7, a multipoint electronic micro-pressure sensor 8, an ultrasonic generator 9 and a heating device 10; a control device 6 is arranged outside the outer cylinder 1; a heating device 10 and an ultrasonic generator 9 are arranged between the outer cylinder 1 and the inner cylinder 3, the heating device 10 is used for heating oil in the inner cylinder, and the ultrasonic generator 9 is used for carrying out ultrasonic treatment on the oil in the inner cylinder; an electronic micro-pressure sensor 8, a thermocouple 7 and a gas tube 4 are arranged in the inner cylinder 3; the electronic micro-pressure sensor 8 is used for measuring the pressure of the oil product sample at different heights and transmitting the signal to the electronic display; the gas pipe 4 is used for introducing low-oxygen gas and oxygen-enriched gas into the inner cylinder.
The upper part of the outer cylinder 1 is provided with an outer cover 2, and the outer cover 2 is used for sealing the upper end of the inner cylinder 1. The electronic micro-pressure sensor 8, the thermocouple 7 and the gas tube 4 respectively penetrate through the through holes and extend into the inner barrel 3. An electronic display of the external control device 6 is communicated with the electronic micro-pressure sensor 8 and is used for displaying data; the control device 6 is connected with the heating device 10, the ultrasonic generator 9 and the thermocouple 7 respectively for operation.
The inner cylinder 3 further comprises a gas distributor 5, and the outlet at the lower end of the gas pipe 4 penetrates through the gas distributor 5 and is positioned below the gas distributor 5. The outer cover 2 is provided with a gas-dredging hole for discharging gas in the inner cylinder 3.
In a specific detection device, the height of an inner cylinder 3 is 25cm, the inner diameter is 4cm, three pressure sensitive elements are adopted, and three points with liquid level depths of 3cm, 11cm and 21cm are selected in the vertical direction.
The invention discloses a method for rapidly detecting the stability of heavy bunker fuel oil, which comprises the following steps: the heavy blended fuel oil is filled into the inner cylinder 3 to a scale mark, the gas pipe 4, the multipoint electronic micro-pressure sensor 8 and the outer cover 2 are assembled and then are covered on the inner cylinder 3, the lower end of an air column of the gas pipe 4 is ensured to be inserted into an air column opening of the gas distributor 5, the outer cover and the outer cylinder 1 are sleeved and screwed, the thermocouple 7 is inserted, and the upper end of the air column of the gas pipe 4 is connected with an external gas source. At this point, the display reading P of the electronic display is recorded0,1、P0,2、P0,3(ii) a Starting the control device 6, setting the temperature T1, starting the ultrasonic generator 9, and introducing the low-oxygen GAS GAS1 with the volume flow of s1 for first temperature rise and aging; let in t01After a certain time, the ultrasonic generator 9 is switched off, and the reading P is recorded after the reading has stabilized1,1、P1,2、P1,3(ii) a Setting the temperature T2 for the control device 6, introducing oxygen-enriched GAS GAS2 with volume flow of s2 for the second temperature rise aging, and introducing T02After the time, after the ventilation is finished, the temperature is reduced to T3, and the mixture is kept still for a period of time to record different pressure values P at different positions measured by time T12,1、P2,2、P2,3(ii) a The average aging rate and the aging value are calculated by using formulas.
In order to examine the effect of the detection method in the invention, a heavy bunker fuel oil which is commonly used in industry is selected for carrying out the effect experiment of the invention. The experimental conditions of examples 1 to 4 are shown in table 1, and the measurement results are shown in table 2.
TABLE 1 Experimental conditions
Table 2 evaluation results of examples 1 to 4
TABLE 2 evaluation results of examples 1 to 4
The results in Table 2 and Table 2 show that the apparatus and method of the present invention can measure the stability change of the heavy bunker fuel oil in a short time. The greater the aging rate, the faster the fuel oil ages under the conditions; the greater the aging value, the less stable the oil.
Example 5
Three heavy bunker blend oils A, B, C were selected and tested for stability testing under the conditions of example 2 (scheme 1), with the experimental data shown in tables 3 and 3.
TABLE 3A, B, C test results of three blended fuel oils under the conditions of scheme 1 (three test points)
TABLE 3 detection results of A, B, C blend fuels under the condition of scheme 1 (three detection points)
The results in Table 3 show that A has the worst stability and the fastest aging speed; c has the best stability and the aging rate is slower.
Example 6
Selecting heavy marine concocted fuel oil A, B, C and carrying out a stability detection experiment according to the conditions (scheme 1) of the example 2, wherein 5 electronic micro-pressure sensors are arranged in an experimental device, and five points with liquid level depths of 3cm, 7.5cm, 12cm, 16.5cm and 21cm are selected in the vertical direction. The experimental data are shown in table 4 and table 4.
TABLE 4A, B, C test results of three blended fuel oils under the conditions of scheme 1 (five test points)
TABLE 4 detection results of A, B, C blend fuels under the condition of scheme 1 (five detection points)
The experimental result shows that the stability of the A is the worst and the aging speed is the fastest under the same experimental conditions; c has the best stability and the aging rate is slower. The experimental results of the five test points are consistent with the experimental results of the three test points. The more test points, the larger the cumulative amount of concentration differences on the gradient, and therefore the larger the calculated value.
Comparative example 1
The three heavy bunker blend fuel oils A, B, C were selected, and the stability testing experiments were performed by standing at room temperature without introducing oxidizing gas (scheme 2) and data processing, and the time required to achieve similar pressure readings was examined, with the results shown in tables 5, 5 and 6.
TABLE 5A, B, C test results of three blended fuel oils under the conditions of scheme 2
TABLE 5 detection results of A, B, C blend fuels under the conditions of scheme 2
TABLE 6 comparative test results
From the results of tables 5-6, it can be seen that the inventive apparatus and method can exhibit a change in stability of a heavy bunker fuel oil in a short time as compared to the conventional method.
Claims (16)
1. A method for testing the stability of blended fuel oil, comprising the following steps:
(1) providing a container, wherein the container is a closed cylinder and comprises a feed inlet for adding fuel oil into the cylinder, an air inlet pipeline for introducing oxygen-containing gas into the cylinder, a heating device for heating the cylinder, an ultrasonic disperser for applying ultrasonic action to the fuel oil and an electronic micro-pressure sensor for measuring high pressure at different positions in the cylinder;
(2) the bunker fuel is filled into the container and the pressure values P at different heights measured at the starting time t0 are recorded0,1、P0,2、…、P0,n；
(3) Controlling the temperature of the fuel oil sample to be T1, and introducing low-oxygen GAS GAS1 into the fuel oil sample for TO1(ii) a Simultaneously starting an ultrasonic generator to disperse and oxidize the blended oil, standing for a period of time after the gas is introduced, and recording the time t1Measured different-position high pressure value P1,1、P1,2、…、P1,n；
(4) Increasing the temperature of the fuel oil sample to T2, and introducing oxygen-enriched GAS GAS2 into the fuel oil sample for TO2(ii) a After the aeration is finished, the temperature is reduced to T3, and the mixture is kept still for a period of time T1Measured different-position high pressure value P2,1、P2,2、…、P2,n；
(5) And (3) calculating: obtaining an aging value:
wherein n is a natural number, and n ≧ 2.
2. The method according to claim 1, wherein the temperature T1 is 30-900 ℃ and the temperature T2 is 50-900 ℃.
3. The method according to claim 1, wherein the oxygen content of the low oxygen GAS GAS1 is 10-30% of the oxygen content of the oxygen-enriched GAS in step (3), and the other suitable GAS is inert GAS mixture or nitrogen.
4. The method according to claim 1 or 3, wherein the low-oxygen gas is introduced in an amount of 10 to 1000min in terms of gas-oil volume ratio-1Time of ventilation tO1Is 0.1 to 10 hours.
5. The method of claim 1, wherein the frequency of the ultrasonic generator is 20 to 100kHz, and the power applied by 1kg of material is 0.3 to 1.2 kWh.
6. The method according to claim 1, wherein the oxygen-enriched GAS GAS2 is at least one selected from the group consisting of an inert GAS mixture having an oxygen content of 50-90%, high purity oxygen, and ozone.
7. The method according to claim 1, wherein the oxygen-rich gas is introduced in an amount of 10 to 1000min in terms of gas-oil volume ratio-1Time of ventilation tO1Is 0.1 to 10 hours.
8. The method of claim 1, wherein the temperature T3 is room temperature and the cooling process is natural cooling.
9. A device for rapidly detecting heavy blended fuel oil comprises an outer cylinder, an outer cover, an inner cylinder, a gas pipe, a gas distributor, a control device, a thermocouple, a multipoint electronic micro-pressure sensor, an ultrasonic generator and a heating device;
the device comprises an outer cylinder, an inner cylinder and a control device;
a control device is arranged outside the outer cylinder; a heating device and an ultrasonic generator are arranged between the outer cylinder and the inner cylinder, the heating device is used for heating oil in the inner cylinder, and the ultrasonic generator is used for carrying out ultrasonic treatment on the oil in the inner cylinder;
the inner cylinder is used for containing an oil product sample; an electronic micro-pressure sensor, a thermocouple and a gas tube are arranged in the inner cylinder; the electronic micro-pressure sensor is used for measuring the pressure of the oil product sample at different heights and transmitting the signal to the electronic display; the thermocouple is used for measuring the temperature of an oil product to be measured; the gas pipe is used for introducing low-oxygen gas and oxygen-enriched gas into the inner cylinder.
10. The device of claim 9 wherein the outer barrel further comprises an upper outer cover for sealing against the upper end of the inner barrel; the center of the outer cover is provided with a plurality of through holes, and the electronic micro-pressure sensor, the thermocouple and the gas tube respectively penetrate through the through holes to extend into the inner cylinder.
11. The apparatus of claim 9, wherein the heating device, the ultrasonic generator and the thermocouple are respectively connected with the control device, and the electronic micro-pressure sensor is communicated with an electronic display of the external control device.
12. The apparatus of claim 9, wherein the inner cylinder further comprises a gas distributor, and the lower outlet of the gas pipe extends through the gas distributor and is located below the gas distributor.
13. The apparatus of claim 9, wherein the outer cover is further provided with gas evacuation holes around the gas pipe, and the gas evacuation holes are used for exhausting gas in the inner cylinder.
14. The apparatus of claim 9, wherein the heating device is an electric heating wire or an electric heating rod.
15. The device of claim 9, wherein the inner cylinder is made of glass or polytetrafluoroethylene, and a scale mark is arranged above the inner part of the inner cylinder, so that the adding height of oil products can reach the height uniformly; the diameter of the upper edge of the inner cylinder is the same as the outer diameter of the outer cylinder, and the inner cylinder can be suspended in the outer cylinder.
16. The apparatus of claim 12, wherein the gas distributor is a disk structure and is connected to the inner wall of the inner cylinder, and the gas distributor has a gas column port and a plurality of gas dispersion holes.
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