Magnetic atmosphere micro-channel diesel oil solubilizing nitrogen experiment equipment and method

Abstract

The invention discloses a magnetic atmosphere micro-channel diesel oil solubilizing nitrogen experiment device and method, and relates to the technical field of diesel oil dissolved gas experiments, the magnetic atmosphere micro-channel diesel oil solubilizing nitrogen experiment device comprises a diesel oil supply device used for supplying oil; the gas supply device is used for pumping gas; the magnetic treatment device comprises a constant-temperature box and a magnetic atmosphere reaction unit, the magnetic atmosphere reaction unit is arranged in the constant-temperature box and comprises a coil pipe and a magnet component, the coil pipe is divided into multiple layers of coil rings, every two adjacent layers of coil rings are separated, the magnet component is arranged between every two adjacent layers of coil rings, an input port is formed in one end of the coil pipe, and an output port is formed in the other end of the coil pipe. An output port is formed in the other end of the coil pipe; the diesel supply device and the gas supply device are communicated with the input port; and the measuring device is used for measuring an oil-gas dissolved gas result and is connected with the output port. According to the experimental equipment, the micro-channel technology and the magnetic treatment technology are adopted, mixed gas magnetization treatment is conducted on diesel oil, and the gas dissolving capacity of organic liquid after passing through the magnetic treatment micro-channel can be explored.

Description

Technical Field

[0001] This application relates to the field of diesel dissolved gas experimental technology, and in particular to a magnetic atmosphere microchannel diesel nitrogen solubilization experimental device and method. Background Technology

[0002] The automobile has a history of over a century and has become an indispensable means of transportation in people's daily lives. However, in recent years, with the rapid development of my country's automobile industry, while providing convenience, it has also generated a series of problems. For example, low engine efficiency leads to excessive fuel consumption, and the large amount of sulfur dioxide in automobile exhaust causes resource waste and environmental pollution. Secondly, with the continuous growth of global demand for diesel fuel, the requirements for diesel fuel are also gradually increasing, while the supply of high-quality diesel fuel is decreasing. The most important solution to these problems is to improve engine combustion performance and reduce exhaust emissions.

[0003] Current research has also investigated the effect of dissolved gas in biodiesel blends on atomization performance. Results show that appropriate dissolved gas concentration in biodiesel can improve atomization quality, thereby enhancing combustion performance. Therefore, studying the dissolved gas characteristics of diesel fuel can improve its combustion performance and reduce harmful emissions.

[0004] In recent years, microchannel technology has developed rapidly and has been widely used in process research and industrial production. It features small size, good heat and mass transfer performance, convenient transportation, safety, and speed. Its unique and significant advantages have garnered attention worldwide. Meanwhile, with the continuous development of magnetic treatment technology, it is also finding increasing applications in the petrochemical industry. Currently, microchannel technology and magnetic treatment technology are key factors determining the solubility of gases in diesel fuel. Existing technology lacks equipment capable of integrating these two processes for gas dissolution experiments. Summary of the Invention

[0005] This application aims to solve one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a magnetic atmosphere microchannel diesel-soluble nitrogen experimental apparatus.

[0006] This application also provides an experimental method for solubilizing nitrogen in diesel fuel using a magnetic atmosphere microchannel.

[0007] According to an embodiment of the first aspect of this application, a magnetic atmosphere microchannel diesel-solubilized nitrogen experimental device is provided, including a diesel supply device for supplying diesel; Gas supply device, used for pumping gas; A magnetic treatment device includes a constant temperature chamber and a magnetic atmosphere reaction unit. The magnetic atmosphere reaction unit is disposed in the constant temperature chamber. The magnetic atmosphere reaction unit includes a coil and a magnetic component. The coil is divided into multiple layers of coils, with adjacent layers of coils spaced apart and the magnetic component disposed between adjacent layers of coils. One end of the coil forms an inlet, and the other end of the coil forms an outlet. The diesel fuel supply device and the gas supply device are both connected to the inlet. A measuring device for measuring dissolved gas results in oil and gas, the measuring device being connected to the output port.

[0008] The aforementioned magnetic atmosphere microchannel diesel-nitrogen-solubilizing experimental device has at least the following beneficial effects: The magnetic atmosphere microchannel diesel-nitrogen-solubilizing experimental device of this application forms a microchannel for oil and gas to pass through through a coil. Magnetic components are then placed at various points within the microchannel to create a magnetic field around the coil, causing changes in the gas-liquid mixture passing through the magnetic field. During use, the magnetic atmosphere reaction unit is preheated to a preset temperature using a constant temperature chamber, and the diesel supplied by the diesel supply device is simultaneously preheated to ensure that the temperature of the liquid entering the coil is close to that of the coil, reducing the influence of temperature differences. Gas is simultaneously supplied with diesel, allowing both diesel and gas to enter the coil at the same time. The output oil is then measured using a measuring device to obtain the desired oil-gas dissolution result. This magnetic atmosphere microchannel diesel-nitrogen-solubilizing experimental device of this application employs microchannel technology and magnetic treatment technology to perform mixed-gas magnetization treatment on diesel, enabling the investigation of the gas-solubilizing ability of organic liquids after passing through magnetically treated microchannels.

[0009] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, each layer of the coil has at least five turns of coil, and the coil has at least 18 layers.

[0010] According to the magnetic atmosphere microchannel diesel solubilized nitrogen experimental device described in the first aspect of this application, pressure transmitters are provided at one-third, two-thirds and the outlet of the coil.

[0011] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, the outer diameter of the coil is set to 2~5mm, the inner diameter of the coil is set to 0.5~3mm, and the coil is made of stainless steel.

[0012] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, the magnetic atmosphere reaction unit further includes several fixing blocks, each fixing block being provided with a slot for fixing a coil, wherein the fixing blocks are made of wood or plastic.

[0013] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, the oil supply device includes a pumping unit, a heating unit, and an oil storage unit. The heating unit is a constant temperature water bath, and the oil storage unit is disposed inside the constant temperature water bath. One end of the pumping unit is located inside the oil storage unit, and the other end of the pumping unit is connected to the input port.

[0014] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, the gas supply device includes a gas cylinder and an inlet connector for adding gas to the gas cylinder, and a valve is provided at the inlet connector.

[0015] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, the measuring device includes an oil and gas meter and a circulating water bath assembly, wherein the circulating water bath assembly is used for temperature control of the oil and gas meter.

[0016] According to the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device described in the first aspect of this application, the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device further includes a backwashing device, the backwashing device includes a water storage tank and a horizontal flow pump, the liquid inlet end of the horizontal flow pump is located in the water storage tank, and the other end of the horizontal flow pump is connected to the gas supply device or the output port.

[0017] According to an embodiment of the second aspect of this application, a method for experimentally solubilizing nitrogen in diesel fuel using a magnetic atmosphere microchannel is provided, based on the aforementioned magnetic atmosphere microchannel experimental equipment for solubilizing nitrogen in diesel fuel, comprising the following steps: The constant temperature water bath is adjusted to preheat the diesel fuel in the oil storage unit to a preset temperature, and the constant temperature chamber is adjusted to preheat the magnetic atmosphere reaction unit to the preset temperature; Gas is injected into the gas cylinder using an air generator and a nitrogen generator to expel the water or air from the cylinder. Set the pumping speed of the pumping unit and the horizontal pump so that the diesel fuel and the gas in the cylinder enter the magnetic atmosphere reaction unit from the inlet at the preset speed; Observe the measuring device. Wait until no more oil or gas enters the oil and gas meter and the oil and gas stratification stabilizes, then wait 5-10 minutes. Disconnect the measuring device from the output port and you can read the dissolved gas result. After the measurement is completed, the air supply device, the magnetic treatment device, and the diesel supply device are flushed using a backwashing device.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the structure of the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device according to an embodiment of this application. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the magnetic atmosphere microchannel diesel solubilization nitrogen experimental device in this application embodiment. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the magnetic atmosphere reaction unit in an embodiment of this application; Figure 4 This is a graph showing the effect of flow rate on the dissolved nitrogen content in diesel fuel, as described in the embodiments of this application. Figure 5 This is a diagram illustrating the effect of V oil / V gas ratio on the dissolved nitrogen content in diesel fuel, as shown in the embodiments of this application.

[0020] Reference numerals: Water tank 110, horizontal flow pump 120, pressure gauge 130, first pressure relief valve 140, gas cylinder 150, air inlet connector 160, constant temperature chamber 210, magnetic atmosphere reaction unit 220, column 221, coil 222, fixing block 223, pressure transmitter (230, 340), third pressure relief valve 240, constant temperature water bath 310, oil storage unit 320, pumping unit 330, second pressure relief valve 410, oil and gas meter 420, drainage assembly 430, circulating water bath assembly 440. Detailed Implementation This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0021] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0022] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0024] The basic principle of magnetic treatment technology is to use a magnetic field to change the direction of a diamagnetic fluid in a desired manner, thereby improving production and usage efficiency. Magnetism is a substance, and it has two types: diamagnetic and paramagnetic. In liquids, the electron spins within particles can form a magnetized region called a magnetic domain. The magnetic domains in the magnetized region are arranged arbitrarily, canceling each other out, resulting in no magnetization. Taking crude oil as an example, its own diamagnetic ability is weak, but it exhibits paramagnetism under magnetization. An external magnetic field will change the magnetic force of oil molecules, thus affecting their alignment. This alignment tendency and the initial spatial phase difference will cause changes in the molecular structure in the liquid. Under sufficient magnetization, the arrangement of molecules will change, forming a void. This experiment uses this theory to investigate the dissolved gas content of diesel fuel.

[0025] Reference Figures 1 to 3 The magnetic atmosphere microchannel diesel-soluble nitrogen experimental equipment provided in this application includes a diesel supply device, a gas supply device, a magnetic processing device, and a measuring device.

[0026] The diesel fuel supply device is used to supply fuel via pumping, the gas supply device is used to increase the gas required for the experiment, and the magnetic treatment device includes a constant temperature chamber 210 and a magnetic atmosphere reaction unit 220. The magnetic atmosphere reaction unit 220 is located in the constant temperature chamber 210 and includes a coil 222 and a magnetic component. The coil 222 is divided into multiple layers of coils, with adjacent layers spaced apart and a magnetic component placed between adjacent layers. One end of the coil 222 forms an inlet, and the other end forms an outlet. Both the diesel fuel supply device and the gas supply device are connected to the inlet. The measuring device is used to measure the results of the oil-gas dissolution and is connected to the outlet.

[0027] In the embodiments of this application, such as Figure 3 As shown, coil 222 is wrapped around column 221221.

[0028] The aforementioned magnetic atmosphere microchannel diesel-nitrogen solubilization experimental device forms a microchannel for oil and gas to pass through through a coil 222. Magnetic components are then placed at various points along the microchannel to create a magnetic field around the coil 222, causing changes in the gas-liquid mixture passing through it. In use, the magnetic atmosphere reaction unit 220 is preheated to a preset temperature using a constant temperature chamber 210, and the diesel supplied by the diesel supply device is preheated simultaneously to ensure that the temperature of the liquid entering the coil 222 is close to that of the coil 222, reducing the impact of temperature differences. Gas is simultaneously supplied with diesel, allowing both diesel and gas to enter the coil 222 at the same time. The output oil is then measured using a measuring device to obtain the desired oil-gas solubilization result.

[0029] The magnetic atmosphere microchannel diesel nitrogen solubilization experimental device of this application adopts microchannel technology and magnetic treatment technology to perform mixed gas magnetization treatment on diesel, and can explore the gas solubilization capacity of organic liquid after passing through the magnetically treated microchannel.

[0030] In this embodiment, nitrogen gas is used.

[0031] In some embodiments, each layer of coil 222 has at least five turns, and the coils are arranged in at least 18 layers. By safely arranging multiple turns of coil 222 in each layer, and by setting multiple layers of coils, the contact between the oil and the magnetic field is made more sufficient. In this embodiment, the coil 222 is made of stainless steel, thus forming a stainless steel microchannel.

[0032] In some embodiments, pressure transmitters 230 are installed at one-third, two-thirds and the outlet of the coil 222 to monitor the pressure at each location in real time. In some embodiments, a pressure transmitter 340 is also installed at the outlet of the diesel supply device. In specific embodiments, a third pressure relief valve 240 is installed at one-third, two-thirds and the outlet.

[0033] In some embodiments, the outer diameter of the coil 222 is set to 2~5mm, and the inner diameter of the coil 222 is set to 0.5~3mm, wherein the coil 222 is made of stainless steel. The use of stainless steel for the coil 222 enables it to withstand high pressure; and the setting of the outer diameter of the coil 222 to 2~5mm and the inner diameter of the coil 222 to 0.5~3mm can prevent the presence of impurities from affecting the conveying speed.

[0034] In some embodiments, the magnetic atmosphere reaction unit 220 further includes several fixing blocks 223, each having a slot for fixing the coil 222. The fixing blocks 223 are made of wood or plastic. The coil 222 is fixed to form a coil by the spaced-apart fixing blocks 223. The fixing blocks 223 being made of wood or plastic helps to avoid affecting the generation of the magnetic field.

[0035] Among them, such as Figure 1 As shown, the oil supply device includes a pumping unit 330, a heating unit, and an oil storage unit 320. The heating unit is a constant temperature water bath 310, and the oil storage unit 320 is installed inside the constant temperature water bath 310. One end of the pumping unit 330 is located inside the oil storage unit 320, and the other end of the pumping unit 330 is connected to the input port. In order to facilitate control, a valve is installed at the output end of the pumping unit 330.

[0036] The diesel fuel in the oil storage unit 320 is uniformly heated by the constant temperature water bath 310, and then pumped into the magnetic atmosphere reaction unit 220 by the pumping unit 330.

[0037] In some embodiments, the gas supply device includes a gas cylinder 150 and an inlet connector 160 for adding gas to the gas cylinder 150, with a valve provided at the inlet connector 160. The required experimental gas is filled into the gas cylinder 150 through the inlet connector 160. In some embodiments, multiple gas cylinders 150 may be provided, connected in series, and a first pressure relief valve 140 is provided at the end of the series-connected gas cylinders 150 away from the inlet connector 160.

[0038] In some embodiments, the measuring device includes an oil and gas meter 420 and a circulating water bath assembly 440, the circulating water bath assembly 440 being used for temperature control of the oil and gas meter 420.

[0039] In some specific embodiments, the circulating water bath assembly 440 includes a circulating water bath tank, one end of the oil and gas meter 420 is connected to the output port, and the other end of the oil and gas meter 420 is provided with a drain assembly 430 to facilitate the discharge of oil. A second pressure relief and exhaust valve 410 is also provided between the oil and gas meter 420 and the output port.

[0040] In some embodiments, the magnetic atmosphere microchannel diesel solubilized nitrogen experimental device further includes a backwashing device, which includes a water tank 110 and a horizontal pump 120. The liquid inlet of the horizontal pump 120 is located in the water tank 110, and the other end of the horizontal pump 120 is connected to a gas supply device or an output port. In some embodiments, a pressure gauge 130 is provided at the output end of the horizontal pump 120.

[0041] When gas supply is required, the horizontal flow pump 120 is connected to the gas supply device. The horizontal flow pump 120 draws pure water to quantitatively deliver the gas, so that the gas delivery speed is controllable. When the entire system needs to be flushed, the horizontal flow pump 120 is connected to the output port through the pipeline. During backwashing, the horizontal flow pump 120 sends pure water from the output port into the coil 222 to remove residual diesel. Then the flushing liquid enters the gas supply device from the input port, thereby cleaning the magnetic treatment device and the diesel supply device at the same time.

[0042] This application also provides an experimental method for solubilizing nitrogen in diesel fuel using a magnetic atmosphere microchannel, comprising the following steps: Adjust the constant temperature water bath 310 to preheat the diesel in the oil storage unit 320 to the preset temperature, and adjust the constant temperature box 210 to preheat the magnetic atmosphere reaction unit 220 to the preset temperature; Gas cylinder 150 is filled with gas through an air generator and a nitrogen generator to expel the water or air from gas cylinder 150. Set the pumping speed of pumping unit 330 and horizontal pump 120 so that diesel and gas in cylinder 150 enter the magnetic atmosphere reaction unit 220 from the inlet at a preset speed. Observe the measuring device. After no more oil or gas enters the oil and gas meter 420 and the oil and gas stratification stabilizes, wait another 5-10 minutes, then disconnect the measuring device from the output port to read the dissolved gas result. After the measurement is completed, the air supply device, magnetic treatment device and diesel supply device are flushed by the backwashing device.

[0043] In some embodiments shown in this application, the flow rate is 4 mL / min, V 油 / V 气 Taking the experimental conditions of 1.0 and 40℃ as an example, the specific steps are as follows: Step 1: Start the constant temperature chamber 210, set its temperature parameter to 40 ℃, and preheat for 60 min; start the circulating water bath, set the constant temperature parameter to 25 ℃, and turn on the circulation function; open the constant temperature water bath 310, set the temperature to be the same as that of the constant temperature chamber 210 (i.e., 40 ℃), and turn on the circulation function.

[0044] Step 2: Close all valves, then open the air inlet connector 160 and the first pressure relief valve 140. Inject air into the gas cylinder 150 through the air generator and nitrogen generator to expel the water from the gas cylinder 150. When you hear a "puff" sound, all the water in the gas cylinder 150 has been expelled. However, to avoid air mixing in, continue to ventilate for 2-3 minutes. Then close the air inlet connector 160 and the generator, and simultaneously insert the first pressure relief valve 140 into the water. When no more bubbles emerge from the first pressure relief valve 140, the air pressure is considered to be equal to atmospheric pressure. Then close the air inlet connector 160.

[0045] Step 3: Next, adjust the flow rate of pumping unit 330 and horizontal pump 120 to 4 mL / min. Then, simultaneously turn on pumping unit 330 and horizontal pump 120 to begin the experiment.

[0046] Step 4: Observe the pipeline. After the oil and gas meter 420 stops entering and the oil and gas stratification stabilizes, wait another 5-10 minutes. Then turn off the pumping unit 330 and the horizontal pump 120. You can then read the pressure data from the pressure transmitter.

[0047] Step 5: After reading the numbers, open the second pressure relief valve 410 to release pressure. After the readings of the pressure gauge 130 and the pressure transformer are zero, close all valves. After all the diesel fuel in the oil and gas meter 420 is discharged, use the backwashing device to pump pure water to backwash the oil and gas meter 420, the magnetic treatment device, and the diesel fuel supply device.

[0048] V 油 / V 气 For the variable experiment, only the diesel feed rate, the flow rate of pumping unit 330, and the liquid level parameters in steps 2, 4, and 5 need to be changed; the remaining steps remain the same. When V 油 / V 气 When the value is 0.5, only 100 mL of diesel oil needs to be poured into the oil storage unit 320, the flow rate of the pumping unit 330 should be adjusted to 2 mL / min, and the pump should be stopped when the liquid level drops to 45 mL. When V 油 / V 气 When the value is 0.75, not only is 100 mL of diesel oil poured into the oil storage unit 320, but 23 mL also needs to be poured into the spare measuring cylinder. The flow rate of the pumping unit 330 is adjusted to 3 mL / min, and the pump is stopped when the liquid level drops to 40 mL. When V 油 / V 气 When the value is 1.25, pour 100 mL into the main measuring cylinder and 78 mL into the spare measuring cylinder. Set the flow rate of pumping unit 330 to 5 mL / min and stop the pump when the liquid level reaches 40 mL. When V 油 / V 气 When the value is 1.5, 100 mL is poured into the oil storage unit 320 and 100 mL is poured into the spare measuring cylinder. The flow rate of the pumping unit 330 is adjusted to 6 mL / min. The pump is stopped when the liquid level reaches 35 mL.

[0049] A comparative analysis was conducted under experimental conditions of 110 mL nitrogen gas, 110 mL diesel fuel, and an experimental temperature of 40 ℃, with the feed flow rates of oil and gas controlled at 2 mL / min to 6 mL / min. A control experiment was also performed using the same experimental parameters. The experimental results are shown in Table 3-1. Table 3-1 Data on the effect of flow rate on the dissolved nitrogen content in diesel fuel

[0050] Based on the above experimental results, a dissolved gas curve was plotted to analyze the changing trend of diesel nitrogen dissolved data under different oil and gas feed flow rates. Figure 4 As shown.

[0051] according to Figure 4As can be seen, the overall curve of the blank experimental group fluctuates continuously with the change of flow rate, exhibiting a wave-like pattern. In contrast, the magnetic atmosphere experimental group shows a slow upward trend, and its overall value is significantly higher than that of the blank experimental group. This indicates that under the same conditions in this experiment, the addition of a magnetic atmosphere is beneficial for dissolving nitrogen in diesel fuel, and the dissolving effect increases with the increase of feed rate.

[0052] Table 3-2 Data on the Influence of V-oil / V-gas on the Dissolved Nitrogen Content of Diesel Fuel

[0053] According to Table 3-2 and Figure 5 It can be seen that with the increase of Voil / Vgas, the overall gas volume of diesel fuel in both the control group and the magnetic atmosphere group increases; however, the overall value of the magnetic atmosphere group is significantly higher than that of the control group, indicating that under the same experimental conditions, the addition of a magnetic atmosphere is beneficial to the dissolution of nitrogen in diesel fuel, and the dissolution effect increases with the increase of Voil / Vgas. This further verifies that the magnetic atmosphere has a promoting effect on the nitrogen dissolution performance of diesel fuel.

[0054] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A magnetic atmosphere microchannel diesel solubilized nitrogen gas experimental device, characterized in that: The diesel oil supply device is used for supplying oil. The gas supply device is used for pumping gas. The magnetic treatment device comprises a thermostat and a magnetic atmosphere reaction unit, the magnetic atmosphere reaction unit is arranged in the thermostat, the magnetic atmosphere reaction unit comprises a coil pipe and a magnet component, the coil pipe is divided into multiple layers of coil rings, adjacent two layers of the coil rings are separated, and the magnet component is arranged between the adjacent two layers of the coil rings, one end of the coil pipe forms an input port, and the other end of the coil pipe forms an output port, and the diesel oil supply device and the gas supply device are communicated with the input port. The measuring device is used for measuring the oil-gas solubility result, and the measuring device is connected to the output port. The coil pipe of each layer of the coil rings is wound at least five times, and the coil rings are arranged at least 18 layers.

2. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus according to claim 1, characterized in that: Pressure transmitters are arranged at one-third, two-thirds and the outlet of the coil pipe.

3. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus according to claim 2, characterized in that: The outer diameter of the coil pipe is 2-5 mm, and the inner diameter of the coil pipe is 0.5-3 mm, wherein the coil pipe is made of stainless steel.

4. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus according to claim 3, characterized in that: The magnetic atmosphere reaction unit further comprises a plurality of fixing blocks provided with clamping grooves for fixing the coil pipe, wherein the fixing blocks are made of wood or plastic.

5. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus of claim 1, wherein: The oil supply device comprises a pumping unit, a heating unit and an oil storage unit, the heating unit is a constant temperature water bath, the constant temperature water bath is provided with the oil storage unit, one end of the pumping unit is in the oil storage unit, and the other end of the pumping unit is communicated with the input port.

6. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus according to any one of claims 1 to 5, characterized in that: The gas supply device comprises a gas cylinder and a gas inlet joint for filling gas into the gas cylinder, and a valve is arranged at the gas inlet joint.

7. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus according to claim 6, characterized in that: The measuring device comprises an oil-gas meter and a circulating water bath assembly for temperature regulation of the oil-gas meter.

8. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus according to claim 7, characterized in that: The magnetic atmosphere micro-channel diesel oil solubility nitrogen experiment equipment further comprises a backwashing device, the backwashing device comprises a water storage tank and an advection pump, the liquid inlet end of the advection pump is in the water storage tank, and the other end of the advection pump is communicated with the gas supply device or the output port.

9. The magnetic atmosphere microchannel diesel nitrogen solubility experiment apparatus of claim 8, wherein: The method comprises the following steps:

10. A method for testing the solubility of nitrogen in diesel fuel in a magnetic field microchannel, based on the magnetic field microchannel device for testing the solubility of nitrogen in diesel fuel according to claim 9, characterized in that, Adjust the constant temperature water bath to preheat the diesel oil in the oil storage unit to a preset temperature, and adjust the thermostat to preheat the magnetic atmosphere reaction unit to the preset temperature. Fill the gas cylinder with air by using an air generator and a nitrogen gas generator, and discharge the water or air in the gas cylinder; Set the pumping speeds of the pumping unit and the advection pump, so that the diesel oil and the gas in the gas cylinder enter the magnetic atmosphere reaction unit from the input port at a preset speed; Observe the measuring device, wait for 5-10 min after the oil-gas meter is no longer filled with oil-gas and the oil-gas stratification is stable, cut off the connection between the measuring device and the output port, and then the solubility result can be read; After the measurement is completed, the gas supply device, the magnetic treatment device and the diesel oil supply device are flushed by using the backwashing device. ​

Images