A heavy oil viscosity reduction device

Abstract

The present application relates to a device for reducing the viscosity of heavy oil, comprising a mixing tank, a mixing agitator, a water-soluble photocatalyst storage tank, and a laser reformer; the mixing tank inlet is connected to the heavy oil tank and the clean water tank respectively; the mixing agitator inlet is connected to the mixing tank outlet and the water-soluble photocatalyst storage tank respectively, and the mixing agitator outlet is connected to the laser reformer inlet; a laser emitter is provided on the outside of the laser reformer, and a separation valve is provided at the laser reformer outlet, which is connected to a centrifugal separation tank and an oil-water separator respectively; the oil outlet of the centrifugal separation tank is connected to the heavy oil tank, and the water outlet of the centrifugal separation tank is connected to the oil-water separator; the oil outlet of the oil-water separator is connected to the light oil storage tank, and the water outlet of the oil-water separator is connected to the water storage tank. The device utilizes the principle of laser catalytic reforming to not only reduce the viscosity of heavy oil but also increase the yield of light oil. The device does not have a complex mechanical structure, ensuring its efficiency.

Description

Technical Field

[0001] The present application relates to the field of heavy oil viscosity reduction, and in particular to a heavy oil viscosity reduction device. Background Art

[0002] Heavy oil (referred to as "heavy crude" abroad) is an unconventional oil resource. Conventional oil resources are often prioritized for development due to their ease of development and low production costs. However, as oil demand continues to increase, conventional crude oil production is decreasing. Heavy oil, on the other hand, accounts for an increasing proportion of proven oil reserves. As heavy oil production continues to rise, pipeline transportation becomes increasingly critical. Viscosity and density are key parameters governing surface gathering and processing of heavy oil. The primary factors influencing heavy oil viscosity are metallic heteroatoms and the asphalt colloids upon which they depend. Therefore, reducing the concentration of metallic heteroatoms or asphalt colloids in heavy oil, or converting macromolecules like asphalt colloids into smaller molecules, is a fundamental approach to reducing heavy oil viscosity.

[0003] At present, the existing traditional heavy oil viscosity reduction treatment technologies include: heating method, activated water addition method, catalyst modification viscosity reduction method, but the traditional heavy oil viscosity reduction treatment technologies have the problems of high energy consumption and low efficiency. Summary of the Invention

[0004] The present application provides a heavy oil viscosity reduction device to solve the problems of high energy consumption and low efficiency in existing heavy oil viscosity reduction devices.

[0005] In a first aspect, the present application provides a heavy oil viscosity reduction device, comprising a mixing tank, a mixing agitator, a water-soluble photocatalyst storage tank, and a laser reformer;

[0006] The mixing tank inlet is connected to the heavy oil tank and the clean water tank respectively;

[0007] The mixing agitator inlet is connected to the mixing tank outlet and the water-soluble photocatalyst storage tank respectively, and the mixing agitator outlet is connected to the laser reformer inlet;

[0008] A laser emitter is provided on the outside of the laser reformer, and a separation valve is provided at the outlet of the laser reformer, and the separation valve is connected to the centrifugal separation tank and the oil-water separator respectively;

[0009] The oil outlet of the centrifugal separation tank is connected to the thick oil tank, and the water outlet of the centrifugal separation tank is connected to the oil-water separator;

[0010] The oil outlet of the oil-water separator is connected to the light oil storage tank, and the water outlet of the oil-water separator is connected to the water storage tank.

[0011] Optionally, the mixing tank is provided with a temperature detector, a pressure detector and an agitator.

[0012] Optionally, a heavy component detector 1 is provided between the mixing tank and the mixing agitator, and the heavy component detector 1 is communicatively connected to the laser emitter.

[0013] Optionally, a dosing controller is provided on the water-soluble photocatalyst storage tank, and the dosing controller is communicatively connected to the heavy component detector.

[0014] Optionally, a second heavy component detector is provided between the laser reformer and the separation valve, and the second heavy component detector is communicatively connected to the separation valve.

[0015] Optionally, the water storage tank is connected to the outlet of the mixing tank, and a transmission pump 1 is provided between the water storage tank and the outlet of the mixing tank.

[0016] Optionally, the laser emitter is mounted outside the laser modifier.

[0017] Optionally, the thick oil tank is provided with a first viscosity detector and a first liquid level detector, and the oil-water separator is provided with a second viscosity detector and a second liquid level detector.

[0018] Optionally, a heavy oil valve is provided at the outlet of the heavy oil tank.

[0019] Optionally, the thick oil tank and the clean water tank are connected to the mixing tank inlet through a second transmission pump, a third transmission pump is provided between the mixing agitator inlet and the mixing tank outlet, a fourth transmission pump is provided between the oil outlet of the centrifugal separation tank and the thick oil tank, and a fifth transmission pump is provided between the water outlet of the centrifugal separation tank and the oil-water separator.

[0020] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0021] The heavy oil viscosity reduction device provided in the embodiments of the present application utilizes the principle of laser catalytic modification. The laser emitter can emit laser light of a specific wavelength in conjunction with a water-soluble photocatalyst to catalyze the heavy oil. At the same time, the high temperature generated by the laser can also assist in catalyzing the heavy oil, so that the heavy oil can not only achieve the purpose of viscosity reduction but also increase the output of light oil. Compared with traditional heavy oil viscosity reduction devices, the device has a simple structure and no complex mechanical structure, thereby ensuring efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic structural diagram of an embodiment of a heavy oil viscosity reduction device of the present invention;

[0025] Description of Figure Numbers:

[0026]

[0027]

[0028] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this application can be purchased from the market or prepared by existing methods.

[0031] In the first aspect, the present invention provides a device for reducing the viscosity of heavy oil, such as Figure 1 As shown, it includes a mixing tank 7, a mixing agitator 16, a water-soluble photocatalyst storage tank 15 and a laser reformer 18;

[0032] The inlet of the mixing tank 7 is connected to the heavy oil tank 1 and the clean water tank 5 respectively;

[0033] The inlet of the mixing stirrer 16 is connected to the outlet of the mixing tank 7 and the water-soluble photocatalyst storage tank 15 respectively, and the outlet of the mixing stirrer 16 is connected to the inlet of the laser reformer 18;

[0034] A laser emitter 17 is provided on the outside of the laser reformer 18, and a separation valve 20 is provided at the outlet of the laser reformer 18, and the separation valve 20 is connected to the centrifugal separation tank 22 and the oil-water separator 28 respectively;

[0035] The oil outlet of the centrifugal separation tank 22 is connected to the thick oil tank 1, and the water outlet of the centrifugal separation tank 22 is connected to the oil-water separator 28;

[0036] The oil outlet of the oil-water separator 28 is connected to the light oil storage tank 31 , and the water outlet of the oil-water separator 28 is connected to the water storage tank 33 .

[0037] The heavy oil viscosity reduction device provided in the embodiments of the present application utilizes the principle of laser catalytic modification. The laser emitter can emit laser light of a specific wavelength in conjunction with a water-soluble photocatalyst to catalyze the heavy oil. At the same time, the high temperature generated by the laser can also assist in catalyzing the heavy oil, so that the heavy oil can not only achieve the purpose of viscosity reduction but also increase the output of light oil. Compared with traditional heavy oil viscosity reduction devices, the device has a simple structure and no complex mechanical structure, thereby ensuring efficiency.

[0038] It can be understood that the heavy oil viscosity reduction device injects the heavy oil produced in the oil field operation into the heavy oil tank 1, mixes it with clean water, and then pumps it into the mixing tank 7. After adding a water-soluble photocatalyst, the mixed liquid is passed into the laser reformer 18. The laser emitter 17 emits a laser of a specific wavelength, which cooperates with the water-soluble photocatalyst to catalytically crack the heavy oil in the laser reformer 18 using the photocatalytic effect. The modified mixture is tested for heavy components. If the test does not meet the standards, the mixed liquid is conveyed to the centrifugal separation tank 22 through the separation valve 20. The centrifugal separation tank 22 centrifuges the mixed liquid after preliminary treatment, and the separated oil containing heavy components that have not been catalytically cracked is returned to the heavy oil tank 1 through the oil outlet. The above process is repeated again, and the separated light oil and water containing water-soluble photocatalyst are conveyed to the oil-water separator 28 through the water outlet for the next step. If the test meets the standards, the mixed liquid is conveyed to the oil-water separator 28 through the separation valve 20 for oil-water separation. The separated modified light oil is stored in the light oil storage tank 31 for later collection and transportation to the refinery, and the water containing the water-soluble photocatalyst is stored in the water storage tank 33 containing the water-soluble photocatalyst.

[0039] As an optional embodiment, Figure 1 As shown, the mixing tank 7 is provided with a temperature detector 8, a pressure detector 9 and a stirrer 10.

[0040] It can be understood that the temperature detector 8, the pressure detector 9 and the stirrer 10 are used to stir and test the temperature and pressure of the mixing tank 7 so as to fully mix the heavy oil and the clean water.

[0041] As an optional embodiment, Figure 1 As shown, a heavy component detector 12 is provided between the mixing tank 7 and the mixing agitator 16 , and the heavy component detector 12 is communicatively connected with the laser emitter 17 .

[0042] It can be understood that the heavy component detector 12 is used to determine the heavy component content in the mixed liquid. The heavy component detector transmits the information to the laser emitter 17. The laser emitter 17 emits a laser of a specific wavelength based on the heavy component content information fed back by the heavy component detector, thereby better modifying the heavy oil.

[0043] As an optional embodiment, Figure 1 As shown, the water-soluble photocatalyst storage tank 15 is provided with a dosing controller 14 , and the dosing controller 14 is in communication connection with the heavy component detector 12 .

[0044] It is understandable that the heavy component detector transmits information to the dosing controller 14, and the dosing controller 14 determines the amount of water-soluble photocatalyst to be added, so as to better upgrade the heavy oil.

[0045] As an optional embodiment, Figure 1 As shown, a second heavy component detector 19 is provided between the laser reformer 18 and the separation valve 20 , and the second heavy component detector 19 is in communication with the separation valve 20 .

[0046] It should be noted that after the laser-catalyzed heavy oil is detected by the heavy component detector 219, if its heavy component content does not meet the standard, the mixed liquid will be transported to the centrifugal separation tank 22 through the separation valve 20; if it meets the standard, it will be transported to the oil-water separator 28 to complete the oil-water separation, and obtain light oil and water containing water-soluble photocatalyst.

[0047] As an optional embodiment, Figure 1 As shown, the water storage tank 33 is connected to the outlet of the mixing tank 7, and a transmission pump 35 is provided between the water storage tank 33 and the outlet of the mixing tank 7.

[0048] It can be understood that the transfer pump 35 is used to inject the water containing the water-soluble photocatalyst in the water storage tank 33 back into the mixing agitator 16 for reuse.

[0049] As an optional embodiment, Figure 1 As shown, the laser emitter 17 is sleeved outside the laser modifier 18 .

[0050] It should be noted that laser emitter 17 can be a sleeve-type laser emitter, and laser reformer 18 can be composed of a spiral-bend laser reformer. Laser emitter 17 utilizes a sleeve-type structure, housing the spiral-bend laser reformer. This allows for comprehensive irradiation of the heavy oil within the spiral-bend laser reformer, ensuring optimal treatment results and conveniently controlling the use of the heavy oil viscosity reduction device. The spiral-bend laser reformer utilizes a spiral tube structure, providing a larger laser contact area than a conventional straight pipe, enabling optimal laser catalytic reforming.

[0051] As an optional embodiment, Figure 1 As shown, the thick oil tank 1 is provided with a viscosity detector 1 and a liquid level detector 1 2, and the oil-water separator 28 is provided with a viscosity detector 2 and a liquid level detector 29.

[0052] It is understandable that the first viscosity detector is used to monitor the viscosity of the heavy oil in the heavy oil tank 1 , and the second viscosity detector is used to monitor the viscosity of the separated oil in the oil-water separator 28 .

[0053] As an optional embodiment, Figure 1 As shown, a heavy oil valve 3 is provided at the outlet of the heavy oil tank 1 .

[0054] It should be noted that after the heavy oil valve 3 is closed, the inner wall of the heavy oil transport pipe can be flushed with high-pressure water through the clean water tank 5, so that the pipe used for a long time can be kept unobstructed at all times.

[0055] It should be noted that if Figure 1 As shown, the outlet of the clean water tank 5 is provided with a valve 4, the outlet of the water-soluble photocatalyst storage tank 15 is provided with a valve 13, the outlet of the separation valve 20 is provided with a valve 21 and a valve 27, the oil outlet and the water outlet of the centrifugal separation tank 22 are respectively provided with a valve 23 and a valve 26, the oil outlet and the water outlet of the oil-water separator 28 are respectively provided with a valve 30 and a valve 32, and the outlet of the water storage tank 33 is provided with a valve 34.

[0056] As an optional embodiment, Figure 1 As shown, the thick oil tank 1 and the clean water tank 5 are connected to the inlet of the mixing tank 7 via a second transfer pump 6. A third transfer pump 11 is provided between the inlet of the mixing agitator 16 and the outlet of the mixing tank 7. A fourth transfer pump 24 is provided between the oil outlet of the centrifugal separation tank 22 and the thick oil tank 1. A fifth transfer pump 25 is provided between the water outlet of the centrifugal separation tank 22 and the oil-water separator 28.

[0057] It can be understood that the transmission pump 2 6 , the transmission pump 3 11 , the transmission pump 4 24 , and the transmission pump 5 25 are all used to drive the flow of liquid.

[0058] In summary, the working process of the heavy oil viscosity reduction device provided in the embodiment of the present application is as follows: the heavy oil extracted in the oil field operation is injected into the heavy oil tank 1, mixed with the clean water from the clean water tank 5, and then pumped into the mixing tank 7 through the transmission pump 6. The mixing tank 7 is equipped with a temperature detector 8, a pressure detector 9, and an agitator 10. The temperature and pressure are measured after stirring and mixing. After stirring and mixing, it is pumped through the transmission pump 11. The heavy component content in the mixed liquid is determined by the heavy component detector 12, and the heavy component detector 12 transmits the information to the water-soluble The photocatalyst dosing controller 14 and the sleeve-type laser emitter 17 are used. The water-soluble photocatalyst dosing controller 14 determines the dosage of the water-soluble photocatalyst. After the water-soluble photocatalyst is added, the heavy oil, clean water and the water-soluble photocatalyst are mixed and stirred by the mixing agitator 16 and transported to the spiral elbow laser reformer 18. The sleeve-type laser emitter 17 emits a laser of a specific wavelength in accordance with the heavy component content information transmitted by the heavy component detector 12 to cooperate with the water-soluble photocatalyst to perform laser-catalyzed heavy oil reforming and cracking. The reformed mixture is tested for heavy components by a heavy component detector 219, which transmits the heavy component content information to a separation valve 20. If the test fails to meet the standards, the mixed liquid is transported to a centrifugal separation tank 22 via the separation valve 20. The centrifugal separation tank 22 centrifuges the preliminarily treated mixed liquid, and the separated oil containing heavy components that have not been catalytically cracked is returned to the heavy oil tank 1 via a transfer pump 24. The above process is repeated again, and the separated light oil and water containing a water-soluble photocatalyst are transported to an oil-water separator 28 via a transfer pump 25 for the next process. If the test meets the standards, the mixed liquid is transported to an oil-water separator 28 via the separation valve 20 for oil-water separation. The separated reformed light oil is stored in a light oil storage tank 31 for later collection and transportation to an oil refinery, and the water containing a water-soluble photocatalyst is stored in a water storage tank 33 containing a water-soluble photocatalyst and returned via a transfer pump 35 for recycling.

[0059] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity and should not be understood as a hard limitation on the scope of the present application; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numbers within the range. For example, the description of a range from 1 to 6 should be considered to have specifically disclosed sub-ranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which applies regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0060] In this application, unless otherwise specified, the directional words used, such as "upper" and "lower", refer specifically to the directions of the drawings in the accompanying drawings. In addition, in the description of the present application specification, the terms "including", "comprising", etc. mean "including but not limited to". In this article, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. In this article, "and / or" describes the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. Wherein A and B can be singular or plural. In this article, "at least one" refers to one or more, and "plurality" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c", can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, and c can be single or multiple, respectively.

[0061] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A device for reducing the viscosity of heavy oil, characterized in that: It includes a mixing tank (7), a mixing stirrer (16), a water-soluble photocatalyst storage tank (15) and a laser reformer (18); The inlet of the mixing tank (7) is connected to the heavy oil tank (1) and the clean water tank (5) respectively; The inlet of the mixing stirrer (16) is connected to the outlet of the mixing tank (7) and the water-soluble photocatalyst storage tank (15), respectively, and the outlet of the mixing stirrer (16) is connected to the inlet of the laser reformer (18); A laser emitter (17) is provided outside the laser reformer (18), and a separation valve (20) is provided at the outlet of the laser reformer (18), and the separation valve (20) is connected to the centrifugal separation tank (22) and the oil-water separator (28) respectively; the laser reformer (18) is a spiral-bend laser reformer, and the laser emitter (17) adopts a sleeve-type structure and is covered outside the spiral-bend laser reformer; The oil outlet of the centrifugal separation tank (22) is connected to the thick oil tank (1), and the water outlet of the centrifugal separation tank (22) is connected to the oil-water separator (28); The oil outlet of the oil-water separator (28) is connected to the light oil storage tank (31), and the water outlet of the oil-water separator (28) is connected to the water storage tank (33); A heavy component detector (12) is provided between the mixing tank (7) and the mixing agitator (16), and the heavy component detector (12) is communicatively connected to the laser emitter (17); The water-soluble photocatalyst storage tank (15) is provided with a dosing controller (14), and the dosing controller (14) is in communication connection with the heavy component detector 1 (12); The water storage tank (33) is connected to the outlet of the mixing tank (7), and a transmission pump (35) is provided between the water storage tank (33) and the outlet of the mixing tank (7). The transmission pump (35) is used to inject the water containing the water-soluble photocatalyst in the water storage tank (33) back into the mixing agitator (16) for reuse; A second heavy component detector (19) is provided between the laser reformer (18) and the separation valve (20), and the second heavy component detector (19) is communicatively connected to the separation valve (20).

2. The heavy oil viscosity reducing device according to claim 1, characterized in that: The mixing tank (7) is provided with a temperature detector (8), a pressure detector (9) and a stirrer (10).

3. The heavy oil viscosity reducing device according to claim 1, characterized in that: The thick oil tank (1) is provided with a first viscosity detector and a first liquid level detector (2), and the oil-water separator (28) is provided with a second viscosity detector and a second liquid level detector (29).

4. The heavy oil viscosity reducing device according to claim 1, characterized in that: A heavy oil valve (3) is provided at the outlet of the heavy oil tank (1).

5. The heavy oil viscosity reducing device according to claim 1, characterized in that: The thick oil tank (1) and the clean water tank (5) are connected to the inlet of the mixing tank (7) through a second transmission pump (6); a third transmission pump (11) is provided between the inlet of the mixing agitator (16) and the outlet of the mixing tank (7); a fourth transmission pump (24) is provided between the oil outlet of the centrifugal separation tank (22) and the thick oil tank (1); and a fifth transmission pump (25) is provided between the water outlet of the centrifugal separation tank (22) and the oil-water separator (28).

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