Device for measuring influence of different pipe bending angles on heavy oil transportation by hydrogen mixing

Abstract

The utility model belongs to the technical field of pipeline transportation measurement, and discloses a device for measuring the influence of different elbow angles on mixed hydrogen heavy oil transportation, which comprises an elbow, a heavy oil inlet and a mixture outlet are respectively arranged at two ends of the elbow, a hydrogen inlet is arranged on the side wall of the elbow close to the heavy oil inlet, and pipeline flow meters are respectively arranged on a horizontal section and a vertical section of the elbow; a hydrogen cylinder, a gas pump and a gas flow meter are sequentially arranged on the gas inlet pipeline, and the gas flow meter is connected to the hydrogen inlet; a heavy oil tank, a pressure pump and a liquid flowmeter are sequentially arranged on the oil phase pipeline, and the liquid flowmeter is connected to the heavy oil inlet; an inlet of the gas-liquid separator is connected to a mixture outlet of the bent pipe, a waste gas collecting barrel is arranged on a gas phase outlet of the gas-liquid separator, and a liquid phase outlet of the gas-liquid separator is connected to the heavy oil tank; the measurement control system comprises a controller, a monitor and a calculator. The influence of different pipe bending angles on mixed hydrogen conveying heavy oil can be achieved, and a basis and guidance are provided for practical application of a mixed hydrogen conveying technology.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline conveying measurement technical field, specifically, it is a device for measuring the influence of different elbow angles on hydrogen mixing heavy oil conveying. BACKGROUND

[0002] At present, the common method of heavy oil conveying, such as heating conveying and reforming conveying, aims at reducing the friction loss of heavy oil in the conveying process and increasing the fluidity. Hydrogen mixing conveying is also a heavy oil conveying technology, and its purpose is to mix hydrogen into heavy oil and convey the heavy oil with high viscosity. When the heavy oil with high viscosity flows in the pipeline, the heavy oil is generally in a laminar flow state in the conveying process under the action of high viscosity, and at this time, the friction resistance is the friction between crude oil and the pipeline wall surface and the mutual shearing action between each oil layer near the pipeline wall surface. The hydrogen mixing conveying technology is not only widely used in oil fields, but also used in marine pipeline transportation. Compared with the traditional high viscosity conveying technology, the hydrogen mixing conveying has the following advantages: no need to add emulsifying agents, no secondary pollution, no need to heat in the conveying process, no need to build a pipeline with good heat preservation and huge investment, and simple subsequent treatment process. However, for pipeline transportation, it is impossible to ensure that the pipeline is straight from beginning to end, and there must be elbow pipes. In the hydrogen mixing conveying process, the flow state of the movement will change after encountering the elbow pipe, and the flow state changes for different elbow angles, which will have a great influence on the viscosity of the fluid. Therefore, it is necessary to study the influence of different elbow angles on the flow state of hydrogen mixing heavy oil in the hydrogen mixing heavy oil conveying process, which will provide theoretical support for the actual application of hydrogen mixing heavy oil conveying. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a device for measuring the influence of different elbow angles on hydrogen mixing heavy oil conveying, which is a test equipment for simulating the hydrogen mixing heavy oil conveying process, can realize the influence of different elbow angles on hydrogen mixing heavy oil conveying, and provides basis and guidance for the actual application of hydrogen mixing conveying technology.

[0004] The utility model realizes by following technical scheme: a device for measuring the influence of different elbow angles on hydrogen mixing heavy oil conveying, including elbow pipe, gas inlet pipeline, oil inlet pipeline, gas-liquid separator and measurement control system,

[0005] The two ends of the elbow pipe are respectively provided with a heavy oil inlet and a mixture outlet, a hydrogen gas inlet is arranged on the side wall of the elbow pipe near the heavy oil inlet, and pipeline flow measuring instruments are arranged on the horizontal section and the vertical section of the elbow pipe; a hydrogen gas bottle, a gas pump and a gas flow meter are sequentially arranged on the gas inlet pipeline, the gas flow meter is connected to the hydrogen gas inlet; a heavy oil tank, a pressure pump and a liquid flow meter are sequentially arranged on the oil phase pipeline, and the liquid flow meter is connected to the heavy oil inlet; the inlet of the gas-liquid separator is connected to the mixture outlet of the elbow pipe, a waste gas collection barrel is arranged on the gas phase outlet of the gas-liquid separator, and the liquid phase outlet of the gas-liquid separator is connected to the heavy oil tank;

[0006] The measurement control system comprises a controller, a monitor and a calculator, the controller is connected with the air pump and the pressure pump respectively, the monitor is connected with the gas flow meter, the liquid flow meter and the pipeline flow meter respectively, and the calculator is connected with the pipeline flow meter.

[0007] The hydrogen inlet comprises a first gas inlet and a second gas inlet, the gas flow meter is connected with the first gas inlet and the second gas inlet respectively, a first pressure gauge and a first valve are arranged in sequence on the pipeline between the gas flow meter and the first gas inlet, a second pressure gauge and a second valve are arranged in sequence on the pipeline between the gas flow meter and the second gas inlet, the controller is connected with the first valve and the second valve respectively, and the monitor is connected with the first pressure gauge and the second pressure gauge respectively.

[0008] A third pressure gauge and a third valve are arranged in sequence on the pipeline between the liquid flow meter and the heavy oil inlet, the controller is connected with the third valve, and the monitor is connected with the third pressure gauge.

[0009] A fourth valve is arranged on the pipeline between the inlet of the gas-liquid separator and the mixture outlet, a fifth valve is arranged on the pipeline between the gas phase outlet of the gas-liquid separator and the waste gas collecting barrel, and a sixth valve is arranged on the pipeline between the liquid phase outlet of the gas-liquid separator and the heavy oil tank, the controller is connected with the fourth valve, the fifth valve and the sixth valve respectively.

[0010] First baffles are arranged in the first gas inlet and the second gas inlet respectively and extend to the center of the elbow pipe, and a first mixing area, in which the heavy oil and the hydrogen are mixed for the first time, is formed in the elbow pipe region where the first baffles are arranged.

[0011] Second baffles are arranged in the elbow pipe, the second baffles are symmetrically distributed and located in the downstream direction of the first baffles, and a second mixing area, in which the heavy oil and the hydrogen are mixed for the second time, is formed in the elbow pipe region between the first baffles and the second baffles.

[0012] The length of the first baffles is one fifth of the length of the inner diameter of the pipeline, and the length of the second baffles is the same as that of the first baffles.

[0013] The length of the horizontal section and the vertical section of the elbow pipe is 20 m, the first baffles and the second baffles are arranged on the horizontal section, and the interval distance between the first baffles and the second baffles is 50 cm.

[0014] A camera for observing the mixing of the heavy oil and the hydrogen in the elbow pipe is further arranged, and the elbow pipe is made of transparent material.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] (1) The utility model discloses a bend, air inlet pipeline, oil inlet pipeline and gas-liquid separator can truly simulate the process of hydrogen mixing conveying heavy oil in actual application, and the heavy oil is repeatedly used, thereby saving resources.

[0017] (2) The utility model discloses a baffle makes hydrogen and heavy oil mix in the bend and form hydrogen mixing conveying, and utilizes the pipeline flow measuring instrument of horizontal section and vertical section in the bend to measure the flow through per unit time in the whole measurement process, and records the flow value, thereby can calculate the dynamic viscosity value μ measured by different bend angles, and provides theoretical basis for the influence of bend on hydrogen mixing conveying heavy oil.

[0018] (3) The utility model discloses through measuring hydrogen mixing conveying heavy oil process, for different bend angles, hydrogen mixing conveying heavy oil after conveying through the bend, the change of heavy oil conveying dynamic viscosity, finally obtains the relation curve of different bend angles and heavy oil hydrogen mixing conveying flow, can provide specific guiding significance for hydrogen mixing conveying heavy oil on site. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic diagram of the utility model device.

[0020] Figure 2 It is the structure schematic diagram of the utility model device. Figure 1 It is the partial enlarged view of A shown.

[0021] Figure 3 It is the structure schematic diagram of the utility model device.

[0022] Figure 4 It is the structure schematic diagram of the utility model device.

[0023] Figure 5 It is the flow chart diagram of the utility model device measurement.

[0024] Figure 6 It is the relation curve of different bend angles and heavy oil hydrogen mixing conveying flow.

[0025] Figure 7 It is the relation curve of different hydrogen and heavy oil flow rate and dynamic viscosity.

[0026] Wherein, 1 - elbow, 2 - gas-liquid separator, 3 - heavy oil import, 4 - mixture export, 5 - pipeline flow measuring instrument, 6 - hydrogen cylinder, 7 - gas pump, 8 - gas flow meter, 9 - heavy oil tank, 10 - pressure pump, 11 - liquid flow meter, 12 - waste gas collection bucket, 13 - first air inlet, 14 - second air inlet, 15 - first pressure gauge, 16 - first valve, 17 - second pressure gauge, 18 - second valve, 19 - third pressure gauge, 20 - third valve, 21 - fourth valve, 22 - fifth valve, 23 - sixth valve, 24 - first baffle, 25 - second baffle, 26 - camera, 27 - first mixing area, 28 - second mixing area. DETAILED DESCRIPTION

[0027] The utility model's utility model purpose, technical scheme and beneficial effects will be further explained in detail below.

[0028] It should be pointed out that the following detailed description is exemplary and is intended to provide further explanation of the claimed utility model, and all technical and scientific terms used herein have the same meaning as that generally understood by ordinary skilled persons in the technical field to which the utility model belongs, unless otherwise specified.

[0029] To promote the application of the hydrogen mixing delivery heavy oil method in heavy oil resource development in the heavy oil delivery technology, it is necessary to study the safety, stability and economy involved in the hydrogen mixing delivery heavy oil, and since there is no relevant research report on the influence of elbow angle on the hydrogen mixing delivery heavy oil process at present, the utility model focuses on providing a device and method for measuring the influence of different elbow angles on the hydrogen mixing delivery heavy oil, which can obtain the influence of different elbow angles on the hydrogen mixing delivery flow by simulating the elbow delivery process of the hydrogen mixing delivery heavy oil, and can provide theoretical support for the actual application of the hydrogen mixing delivery heavy oil.

[0030] The utility model will be further explained in detail in combination with the embodiments below, but the implementation mode of the utility model is not limited thereto.

[0031] Embodiment 1:

[0032] This embodiment relates to a device for measuring the influence of different elbow angles on the hydrogen mixing delivery heavy oil, which mainly comprises an elbow 1, an air inlet pipeline, an oil inlet pipeline, a gas-liquid separator 2 and a measurement control system, etc., as shown in the structure, which is a measurement device that can realize the simulation of the hydrogen mixing delivery heavy oil working condition. Figure 1 The structure shown is a measurement device that can realize the simulation of the hydrogen mixing delivery heavy oil working condition.

[0033] The measurement device, the gas inlet pipeline and the oil inlet pipeline respectively deliver hydrogen and heavy oil to the bend pipe 1, the hydrogen and the heavy oil are mixed to form a mixed hydrogen delivery after entering the bend pipe 1, and then are separated by the gas-liquid separator 2 after being delivered by the bend pipe 1, the separated hydrogen is recycled, and the separated heavy oil is returned to the oil inlet pipeline for recycling; the measurement control system can not only control the hydrogen flow and the heavy oil flow in the gas inlet pipeline and the oil inlet pipeline, but also record the mixed hydrogen delivery flow before and after the bend pipe 1. Therefore, in view of the measurement device, by simulating and measuring the mixed hydrogen delivery process of the bend pipe 1 with different angles, the influence of different bend pipe angles on the mixed hydrogen delivery heavy oil can be obtained.

[0034] The structure of the measurement device described in the embodiment can be further summarized as follows:

[0035] The gas inlet pipeline and the oil inlet pipeline are respectively as shown in Figure 1 , the gas inlet pipeline includes a hydrogen cylinder 6, a gas pump 7, a gas flow meter 8, a first pressure gauge 15, a first valve 16, and a second pressure gauge 17 and a second valve 18 connected in parallel with the first pressure gauge 15 and the first valve 16; the oil inlet pipeline includes a heavy oil tank 9, a pressure pump 10, a liquid flow meter 11, a third pressure gauge 19, and a third valve 20.

[0036] The bend pipe 1 is made of transparent acrylic glass, and can withstand a pressure of 4 MPa, and the structure is as shown in Figure 1 and Figure 2 , the port of the horizontal section is provided with a heavy oil inlet 3, the port of the vertical section is provided with a mixture outlet 4, the side wall of the bend pipe 1 near the heavy oil inlet 3 is provided with a hydrogen inlet, and the number of the hydrogen inlet is two, which are a first hydrogen inlet 13 and a second hydrogen inlet 14 symmetrically arranged, the gas inlet pipeline is connected to the hydrogen inlet, that is, the first valve 16 of the gas inlet pipeline is connected to the first hydrogen inlet 13, and the second valve 18 of the gas inlet pipeline is connected to the second hydrogen inlet 14, for delivering hydrogen to the bend pipe 1; the oil inlet pipeline is connected to the heavy oil inlet 3, that is, the third valve 20 of the oil inlet pipeline is connected to the heavy oil inlet 3, for delivering heavy oil to the bend pipe 1.

[0037] The hydrogen and heavy oil are mixed after entering the elbow pipe 1 and form a mixed hydrogen conveying flow state. In order to ensure the stability of the mixed hydrogen conveying flow state and ensure the accuracy of the simulation of the mixed hydrogen conveying heavy oil process, the prerequisite is to improve the mixing effect of the hydrogen and heavy oil. In the embodiment, two mixing zones are arranged in the elbow pipe 1. One is that two first baffles 24 are arranged respectively along the side wall of the elbow pipe 1 where the first gas inlet 13 and the second gas inlet 14 are located and extend to the center of the elbow pipe 1, so that the area of the elbow pipe 1 where the first baffles 24 are located forms a first mixing zone 27 for the primary mixing of the heavy oil and hydrogen. The length of the first baffles 24 is one fifth of the length of the inner diameter of the pipeline where the first baffles 24 are located. The other is that two second baffles 25 are symmetrically arranged in the downstream direction of the first baffles 24, so that the area of the elbow pipe between the first baffles 24 and the second baffles 25 forms a second mixing zone 28 for the secondary mixing of the heavy oil and hydrogen. The length of the second baffles 25 is consistent with the length of the first baffles 24.

[0038] In a specific embodiment, the length of the horizontal section and the vertical section of the elbow pipe 1 can be set to 20 m. The first baffles 24 and the second baffles 25 are close to the heavy oil inlet 3 and are arranged on the horizontal section of the elbow pipe 1. The spacing distance between the first baffles 24 and the second baffles 25 is set to 50 cm. Therefore, in actual measurement, after the hydrogen and heavy oil enter the elbow pipe 1, they are mixed to form a mixed hydrogen conveying flow state in the mixing zone, and then are conveyed in turn through the horizontal section, the bend, and the vertical section of the elbow pipe 1, and finally are sent to the gas-liquid separator 2 through the mixture outlet 4. The horizontal section and the vertical section of the elbow pipe 1 are respectively provided with a pipeline flow measuring instrument 5, which can be used to measure the material flow before and after the bend in the mixed hydrogen conveying flow state.

[0039] The gas-liquid separator 2 is used to separate the hydrogen and heavy oil in the mixed hydrogen conveying mixture. As shown in Figure 1 the inlet of the gas-liquid separator 2 is connected to the mixture outlet 4 of the elbow pipe 1, and the fourth valve 21 is arranged on the pipeline between the inlet of the gas-liquid separator 2 and the mixture outlet 4. The waste gas collection barrel 12 is arranged on the gas phase outlet of the gas-liquid separator 2, and the fifth valve 22 is arranged on the pipeline between the gas phase outlet of the gas-liquid separator 2 and the waste gas collection barrel 12. The liquid phase outlet of the gas-liquid separator 2 is connected to the heavy oil tank 9, and the sixth valve 23 is arranged on the pipeline between the liquid phase outlet of the gas-liquid separator 2 and the heavy oil tank 9.

[0040] The measurement control system of the embodiment can realize the control and measurement of the material flow in the measuring device, and specifically includes a controller, a monitor, a calculator and a camera 26. The controller is connected with the air pump 7, the pressurizing pump 10 and various valves in the pipeline respectively, and is used to realize the control of the air flow and the oil flow, and the on-off of the pipeline. The monitor is connected with the gas flow meter 8, the liquid flow meter 11, the pipeline flow measuring instrument 5 and various pressure gauges in the pipeline respectively, and is used to realize the measurement and stability control of the material flow in the pipeline. The pipeline flow measuring instrument 5 is further connected with the calculator. The calculator can be used to obtain the corresponding dynamic viscosity value through calculation by using the flow data obtained by the pipeline flow measuring instrument 5, and thus obtain the relationship curve between the different elbow angles and the heavy oil mixed hydrogen conveying flow, so as to provide a theoretical basis for the influence of the elbow angle on the mixed hydrogen conveying heavy oil. The camera 26 is arranged on one side of the elbow 1, and is used to observe and record the heavy oil mixed hydrogen situation in the elbow 1, and is used for research.

[0041] Embodiment 2

[0042] The embodiment is a process of measuring the flow of heavy oil mixed hydrogen conveying when different angle elbows are used in the device of embodiment 1. The different angle elbows include a 90° elbow (i.e. a right-angle elbow as shown in FIG. 2), a 120° elbow (as shown in FIG. 3) and a 150° elbow (as shown in FIG. 4). The measuring process is as shown in FIG. 5, and can be specifically summarized as follows: Figure 1 Figure 3 Figure 4 Figure 5

[0043] Firstly, the influence of the right-angle elbow on the mixed hydrogen conveying heavy oil is measured.

[0044] ​​​​Close all valves in the pipeline, then open the heavy oil tank 9, pressurizing pump 10, third valve 20, hydrogen cylinder 6, gas pump 7, first valve 16, second valve 18, fourth valve 21, fifth valve 22, sixth valve 23 in turn, adjust the opening of the first valve 16 and the second valve 18 to the same opening. The heavy oil in the heavy oil tank 9 is pressurized by the pressurizing pump 10, and after being measured by the liquid flowmeter 11, it enters the elbow pipe 1 from the heavy oil inlet 3; the hydrogen in the hydrogen cylinder 6 is pressurized by the gas pump 7, and after being measured by the gas flowmeter 8, it enters the elbow pipe 1 from the first gas inlet 13 and the second gas inlet 14 respectively. Adjust the displacement of the gas pump 7 and the pressurizing pump 10, so that the flow rates of hydrogen and heavy oil are 2 m / s and 1 m / s respectively. The hydrogen and heavy oil are mixed in the first mixing area 27, and after mixing, the hydrogen and heavy oil flow from right to left in the elbow pipe 1 to the second mixing area 28, where the hydrogen and heavy oil are mixed for the second time to improve the mixing efficiency. After sufficient mixing, the hydrogen and heavy oil form a mixed hydrogen delivery flow state and continue to flow from right to left in the elbow pipe 1. The mixing of hydrogen greatly improves the flowability of heavy oil. As it flows from right to left, it finally encounters a right angle, and the flow direction changes. Finally, the hydrogen and heavy oil mixture flows out from the mixture outlet 4 to the gas-liquid separator 2 for separation. The separated hydrogen enters the waste gas collection barrel 12 for treatment, and the separated heavy oil flows out from the bottom of the gas-liquid separator 2 to the heavy oil tank 9 for recycling.

[0045] By installing two pipe flow measuring instruments 5 on the horizontal and vertical sections of the right-angle elbow pipe, the flow rates Q1 and Q2 of the mixture in unit time before and after encountering the right angle under the mixed hydrogen delivery flow state are measured. The dynamic viscosity values μ1 and μ2 corresponding to Q1 and Q2 are calculated by the formula: Q=πd^4ρgP / (128μL), and the influence of the right-angle elbow pipe on the mixed hydrogen delivery heavy oil is obtained. At this time, the entire measurement process is completed.

[0046] Then, the right-angle elbow pipe is replaced with a 120° elbow pipe and a 150° elbow pipe in turn, the displacements of the gas pump 7 and the pressurizing pump 10 remain unchanged, so that the flow rates of hydrogen and heavy oil remain unchanged at 2 m / s and 1 m / s respectively. The above measurement steps are repeated for measurement, and the corresponding measurement results Q3 and Q4, Q5 and Q6 are recorded. The corresponding dynamic viscosity values μ3 and μ4, μ5 and μ6 are calculated, and the above measurement results are plotted into a curve as shown in Figure 6 .

[0047] As shown in Figure 6 , under the conditions of hydrogen flow rate 2 m / s and heavy oil flow rate 1 m / s, with the increase of the angle of the elbow pipe 1, the dynamic viscosity of the heavy oil shows a decreasing trend. Since the change of the flow rate of the heavy oil by the 90° elbow pipe is a 90° right angle change, the flow direction changes obviously, and has the greatest influence on the dynamic viscosity of the heavy oil. Therefore, in actual conditions, large-angle elbow pipes are preferably used for transporting heavy oil.

[0048] In the above measurement process, in order to determine the flow rate of hydrogen and heavy oil, the relationship curve between different hydrogen and heavy oil flow rates and dynamic viscosity is established, as shown in the figure Figure 7 Under different hydrogen and heavy oil flow rates, with the increase of flow rate, the dynamic viscosity of heavy oil shows a gradually decreasing trend from the initial dynamic viscosity 1500mP·s, but under the conveying conditions of hydrogen flow rate 2m / s and heavy oil flow rate 1m / s, it is the most economical. With the increase of hydrogen flow rate, the descending slope of the curve of heavy oil dynamic viscosity becomes slow, which indicates that the increase of flow rate is not economical at this time.

[0049] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change made according to the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A device for measuring the effect of different elbow angles on hydrogenated heavy oil transportation, characterized in that: The device comprises a bend pipe (1), an air inlet pipe, an oil inlet pipe, a gas-liquid separator (2) and a measurement control system, The bend pipe (1) is provided with a heavy oil inlet (3) and a mixture outlet (4) at two ends respectively, a hydrogen inlet is arranged on the side wall of the bend pipe (1) near the heavy oil inlet (3), and a pipeline flow measuring instrument (5) is arranged on the horizontal section and the vertical section of the bend pipe (1) respectively; a hydrogen cylinder (6), an air pump (7) and a gas flow meter (8) are sequentially arranged on the air inlet pipe, the gas flow meter (8) is connected to the hydrogen inlet; a heavy oil tank (9), a pressure pump (10) and a liquid flow meter (11) are sequentially arranged on the oil phase pipe, and the liquid flow meter (11) is connected to the heavy oil inlet (3); the inlet of the gas-liquid separator (2) is connected to the mixture outlet (4) of the bend pipe (1), a waste gas collection barrel (12) is arranged on the gas phase outlet of the gas-liquid separator (2), and the liquid phase outlet of the gas-liquid separator (2) is connected to the heavy oil tank (9); The measurement control system comprises a controller, a monitor and a calculator, the controller is connected to the air pump (7) and the pressure pump (10) respectively, the monitor is connected to the gas flow meter (8), the liquid flow meter (11) and the pipeline flow measuring instrument (5) respectively, and the calculator is connected to the pipeline flow measuring instrument (5).

2. The apparatus of claim 1, wherein: The hydrogen inlet comprises a first gas inlet (13) and a second gas inlet (14), the gas flow meter (8) is connected to the first gas inlet (13) and the second gas inlet (14) respectively, a first pressure gauge (15) and a first valve (16) are sequentially arranged on the pipeline between the gas flow meter (8) and the first gas inlet (13); a second pressure gauge (17) and a second valve (18) are sequentially arranged on the pipeline between the gas flow meter (8) and the second gas inlet (14), the controller is connected to the first valve (16) and the second valve (18) respectively, and the monitor is connected to the first pressure gauge (15) and the second pressure gauge (17) respectively.

3. The apparatus of claim 1, wherein: A third pressure gauge (19) and a third valve (20) are sequentially arranged on the pipeline between the liquid flow meter (11) and the heavy oil inlet (3), the controller is connected to the third valve (20), and the monitor is connected to the third pressure gauge (19), A fourth valve (21) is arranged on the pipeline between the inlet of the gas-liquid separator (2) and the mixture outlet (4), a fifth valve (22) is arranged on the pipeline between the gas phase outlet of the gas-liquid separator (2) and the waste gas collection barrel (12), a sixth valve (23) is arranged on the pipeline between the liquid phase outlet of the gas-liquid separator (2) and the heavy oil tank (9), and the controller is connected to the fourth valve (21), the fifth valve (22) and the sixth valve (23) respectively.

4. The apparatus of claim 2, wherein: First baffles (24) are arranged along the first gas inlet (13) and the second gas inlet (14) to extend to the center of the bend pipe (1).

5. The apparatus of claim 4, wherein: Second baffles (25) are arranged in the bend pipe (1), the second baffles (25) are symmetrically distributed and located in the downstream direction of the first baffles (24).

6. The apparatus of claim 5, wherein: The length of the first baffles (24) is one fifth of the length of the inner diameter of the pipeline, and the length of the second baffles (25) is the same as that of the first baffles (24).

7. The apparatus of claim 5, wherein: The length of the horizontal section and the vertical section of the elbow pipe (1) is 20 m, the first baffle (24) and the second baffle (25) are arranged on the horizontal section, and the interval distance between the first baffle (24) and the second baffle (25) is 50 cm.

8. The apparatus of claim 1, wherein: The camera (26) for observing the heavy oil mixing hydrogen condition in the elbow pipe (1) is further included, and the elbow pipe (1) is made of transparent material.

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