A hydrogen storage energy and crude oil drag reduction integrated system and method for remote oil and gas fields

Abstract

The application discloses a hydrogen energy storage and crude oil drag reduction integrated system and method for remote oil and gas fields, which mainly comprises inert gas bottles, photochemical reaction tubes, parabolic concentrators, angle limiters, photovoltaic devices, heat exchange cavities, hydrogen storage tanks, fuel cells, crude oil storage tanks and spiral heat conducting pipes and the like components, and realizes distributed solar frequency gradient utilization, collaborative light-heat conversion, waste heat collection and efficient utilization of crude oil drag reduction and gathering through organic cooperation of internal components and process design. The application aims to provide a hydrogen long-time energy storage and crude oil thermal viscosity reduction coupling technical scheme for researchers or practitioners in the related field, which helps to study the solar optical distribution law and efficient thermal coupling method in the integrated system, and also can explore the best optimization threshold interval of process parameters and low-resistance transmission of internal energy and mass flow by optimizing the components of the system. The application has the advantages of high integration and strong controllability.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of oil and gas field development, and particularly relates to a hydrogen energy storage and crude oil drag reduction integrated system and method for remote oil and gas fields. BACKGROUND

[0002] In the development process of oil and gas reservoirs, especially for the exploitation of heavy oil, due to the high viscosity and low flowability of heavy oil, it brings great challenges to exploitation and transportation. Although heavy oil can be extracted from underground rock layers through steam huff and puff, steam drive, steam assisted gravity drainage and other technologies, it is still difficult to transport in the process of ground pipeline. In order to solve this problem, specific chemical additives such as heavy oil solvent or rheological modifier are usually used in engineering, which can effectively reduce the viscosity of heavy oil and improve its flowability. These additives can reduce the viscosity of oil by dissolving or decomposing part of the high molecular polymer. In cold areas, hot water jacket system is also used to heat the oil flow, or electric heating equipment is used to heat the pipeline to maintain the temperature of the oil flow. However, these methods all need a large amount of external energy supply, resulting in high cost. Therefore, how to reduce energy consumption and improve technical efficiency is still a problem to be solved in this field, and technical innovation still needs to be continuously promoted. SUMMARY

[0003] The present application aims to provide a hydrogen energy storage and crude oil drag reduction integrated system and method for remote oil and gas fields, the basic principle of which is based on the frequency division and cascade utilization of distributed solar energy and the coordination of light-thermal conversion. The system and method realize the preparation of hydrogen energy and electric energy, collect process waste heat, and realize efficient utilization of crude oil drag reduction and gathering, aiming to provide a utilization way of solar energy in oil and gas field development and a hydrogen long-term stable energy storage and oil field on-site crude oil heat viscosity reduction coupling technical scheme for researchers or practitioners in the related field, which helps to study the internal solar optical distribution law and efficient thermal coupling method of the integrated system, and also can explore the best optimization threshold interval of process parameters and low resistance transmission of internal energy and quality flow by optimizing the components of the system.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] A hydrogen energy storage and crude oil drag reduction integrated system for remote oil and gas fields comprises an inert gas cylinder, a manual gas valve arranged at the downstream end of the inert gas cylinder, and a photochemical reaction tube arranged at the downstream end of the manual gas valve.

[0006] The upper two sides of the photochemical reaction tube are provided with symmetrically placed parabolic concentrators, and the lower two sides of the photochemical reaction tube are provided with symmetrically placed plane concentrators; the parabolic concentrators and the plane concentrators are respectively provided with parabolic and plane angle limiters in the side direction; the top of the photochemical reaction tube is provided with a linear concentrator, and the right side of the linear concentrator is provided with a height lifter; an optical filter with different light transmission ranges is placed on the linear concentrator, and a clamping device is arranged on the upper left side of the linear concentrator to fix the optical filter; the photochemical reaction tube forms a loop system with a photocatalyst suspension tank, and a peristaltic pump is arranged at the downstream end of the photocatalyst suspension tank; a photovoltaic device is arranged directly below the photochemical reaction tube, a heat-conducting coating is arranged below the photovoltaic device, and a heat exchange cavity is arranged below the heat-conducting coating; the heat exchange cavity forms a loop with a heat fluid storage tank, a centrifugal pump downstream of the heat fluid storage tank, an electromagnetic valve downstream of the centrifugal pump, and a spiral heat-conducting pipe for transferring heat from the heat fluid to the oil pipeline after the heat fluid passes through the heat exchange cavity; at the same time, a temperature feedback system is arranged in the loop to monitor the temperature of the heat fluid in the loop; a direct current inverter is arranged at the downstream end of the photovoltaic device, and an energy storage device is arranged downstream of the direct current inverter; an electrolytic tank is arranged downstream of the energy storage device, and a hydrogen storage tank is arranged downstream of the electrolytic tank; the hydrogen storage tank is connected to a stop valve, a fuel cell is arranged downstream of the stop valve, and an electric heater is arranged downstream of the fuel cell; an oil storage tank is arranged on the upper part of the electric heater, and an oil pipeline and a spiral heat-conducting pipe outside the oil pipeline are connected to the oil storage tank.

[0007] Further improvement of the application is that the photochemical reaction tube is designed as an equal-diameter structure, the inlet is a tapered inlet, the outlet is an expanded outlet, and the position of the outlet is radially upward, the inlet and outlet are staggered to improve the dispersion of particles in the fluid; a rotatable disturbance shaft is symmetrically arranged on the lower side of the photochemical reaction tube to increase the local turbulence degree of particle flow.

[0008] Further improvement of the application is that the heat fluid storage tank stores a mixed nanofluid with a mass concentration of 5wt% Al2O3 and 5wt% CuO.

[0009] Further improvement of the application is that the heat exchange cavity is internally arranged in a linear laminated array type "U" shape structure to increase the heat exchange area and heat exchange effect and transfer more heat to the spiral heat-conducting pipe.

[0010] Further improvement of the application is that the height of the photochemical reaction tube from the linear concentrator can be adjusted by the height lifter, and the adjustment range is 0-20cm; the geometric concentration ratio of the concentrator is between 10-30, and the wave band range of the optical filter placed thereon can be selected according to the actual photochemical reaction absorption and the absorption range of the photovoltaic device.

[0011] The further improvement of the present application is that the parabolic angle limiter can adjust the minimum incident angle of the parabolic concentrator to control the radiation uniformity of photons on the photochemical reaction tube; the angle limiter of the planar concentrator can adjust the emission angle range of the photons passing through the photochemical reaction tube and its uniformity on the photovoltaic.

[0012] The further improvement of the present application is that the waste heat of the photovoltaic back is transferred to the heat-conducting fluid flowing through the heat exchange cavity through the heat-conducting coating; the heated heat-conducting fluid further heats the crude oil flowing in the pipeline through the spiral heat-conducting pipe wound on the crude oil pipeline.

[0013] The further improvement of the present application is that the photocatalyst suspension tank stores photocatalyst particle suspension, which completes the photocatalytic hydrogen production reaction in the photochemical reaction tube, and the product hydrogen gas completes gas-liquid separation inside the photocatalyst suspension tank; at the same time, the electric energy generated by the photovoltaic can be stored in the energy storage device, or further converted into hydrogen gas through electrolysis reaction by the electrolytic tank driven by the energy storage device.

[0014] The further improvement of the present application is that the hydrogen gas in the hydrogen storage tank can be converted into electric energy through the fuel cell according to the actual site demand, and further converted into heat energy through the electric heater to heat the crude oil storage tank to achieve the purpose of viscosity reduction.

[0015] A hydrogen energy storage and oil resistance reduction integrated method for remote oil and gas fields, comprising:

[0016] Before work, fill the nitrogen or argon in the inert gas cylinder, store the photocatalyst particle suspension in the photocatalyst suspension tank, fill the crude oil mined on site in the crude oil storage tank, and store the mixed nanofluid with a mass concentration of 5wt% Al2O3 and 5wt% CuO in the hot fluid storage tank; during work, first control the flow of inert gas through the manual air valve, and drive away the residual air in the photochemical reaction tube; then, start the peristaltic pump to deliver the stably dispersed photocatalyst particle suspension to the inside of the photochemical reaction tube to form a microjet state, and further return to the photocatalyst suspension tank; during the reaction, the outdoor direct solar energy is radiated to the inside of the photochemical reaction tube through the filter above the linear condenser and the linear condenser itself to drive the photocatalyst hydrogen production reaction, and the obtained hydrogen is separated above the photocatalyst suspension tank and stored in the hydrogen storage tank; the part of photons passing through the photochemical reaction tube further radiate to the photovoltaic surface to generate direct current power, and the direct current power is stored in the energy storage device through the direct current inverter to obtain the power in the set current and voltage interval; the energy in the energy storage device is selectively obtained through the electrolysis reaction in the electrolytic cell to obtain hydrogen and store it in the hydrogen storage tank; the part of photons that cannot be utilized by the photovoltaic will be converted into heat energy and transferred to the heat exchange cavity through the heat conduction coating; the heat conduction fluid transfers heat to the spiral heat conduction pipe under the cooperative control of the centrifugal pump and the electromagnetic valve and heats the oil delivery pipe; the temperature feedback system plays a feedback role in adjusting the flow and flow rate parameters in the system; the hydrogen in the hydrogen storage tank obtains heat in the form of hydrogen-electricity-heat through the fuel cell and the electric heater and is further used to heat the crude oil storage tank to improve the flowability of the crude oil through the heating viscosity reduction effect.

[0017] Compared with the prior art, the present application has at least the following beneficial technical effects:

[0018] 1、The present application is based on the spectral distribution properties of solar energy, and a hydrogen energy with long-time energy storage is prepared based on photo-electrochemical cooperation, and at the same time, the waste heat in the system process is used to realize the viscosity reduction and gathering and transportation of the oil field site, which greatly reduces the transportation cost of the oil and gas field site, increases the proportion of new energy, reduces carbon emissions, and provides a technical paradigm for the efficient use of solar energy in the oil and gas field development process.

[0019] 2、The utilization method based on solar energy in the present application can form a topological series utilization structure, fully utilizes the geographical advantages of the oil and gas field site, such as sparsely populated, vast plains, and relatively sufficient solar energy resources, avoids the complexity of traditional external energy supply methods in manpower and facilities, and improves the flexibility of energy utilization in the oil field mining site.

[0020] 3、The present application uses simple condensing technology to realize high-energy driving reaction of solar energy, can obtain comprehensive energy such as hydrogen, heat and electricity, and can realize the autonomous conversion of internal multiple energy through electrolytic cell, fuel cell and other means with hydrogen energy as the medium, and improves the target conversion and storage efficiency of solar energy.

[0021] 4、The application can flexibly construct the heat supply or the hydrogen-heat conversion of the instant heat-conducting fluid according to the heat supply of the system under different working conditions, has strong operability and more selection for the user, and can cope with the multiple change application scenarios of the scene. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0023] Fig. 1 It is a schematic diagram of the structure of the device of the present application;

[0024] Fig. 2 It is a schematic diagram of the local structure of the photochemical reaction tube in the device of the present application;

[0025] Fig. 3 It is a schematic diagram of the local structure of the heat exchange cavity in the device of the present application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1 is an inert gas cylinder, 2 is a manual gas valve, 3 is a photochemical reaction tube, 4 is a parabolic condenser, 5 is a planar condenser, 6 is an angle limiter, 7 is a linear condenser, 8 is a height lifter, 9 is a clamping device, 10 is a photocatalyst suspension tank, 11 is a peristaltic pump, 12 is a photovoltaic, 13 is a heat-conducting coating, 14 is a heat exchange cavity, 15 is a DC inverter, 16 is an energy storage device, 17 is an electrolytic tank, 18 is a hydrogen storage tank, 19 is a stop valve, 20 is a fuel cell, 21 is an electric heater, 22 is a crude oil storage tank, 23 is a heat fluid storage tank, 24 is a centrifugal pump, 25 is a solenoid valve, 26 is a spiral heat-conducting pipe, 27 is a temperature feedback system, 28 is a conical inlet, 29 is an expanded outlet, 30 is a rotatable disturbance shaft, and 31 is a “J” shaped structure. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0029] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0030] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can include one or more of the features explicitly or implicitly. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0031] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Below", "below" and "below" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] It should also be understood that the terms used in the specification of the present application are only for the purpose of describing specific embodiments and do not intend to limit the present application. As used in the specification and the appended claims of the present application, unless otherwise clearly indicated by the context, the singular form "a", "an" and "the" is intended to include the plural form.

[0034] It should be further understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of' denotes one, or a plurality, or at least one of the listed items.

[0035] Various structural diagrams according to the disclosed embodiments of the present application are shown in the accompanying drawings. These diagrams are not drawn to scale, in which certain details are shown in a somewhat exaggerated manner for purposes of clarity and understanding, and certain other details are omitted. The shapes and relative sizes of the various regions, layers, and the relative positions of the regions and layers shown in the drawings are shown for illustrative purposes only and can deviate in actual devices due to manufacturing tolerances or technical limitations, and regions / layers with different shapes, sizes, and relative positions can be designed by those skilled in the art according to actual needs.

[0036] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0037] Example 1

[0038] As Figs. 1-3As shown, the hydrogen storage and crude oil drag reduction integrated system for remote oil and gas field provided by the present application comprises an inert gas cylinder 1, a manual gas valve 2 arranged at the downstream end of the inert gas cylinder 1, and a photochemical reaction tube 3 arranged at the downstream end of the manual gas valve 2; parabolic concentrators 4 are symmetrically arranged at the upper sides of the photochemical reaction tube 3, and planar concentrators 5 are symmetrically arranged at the lower sides of the photochemical reaction tube 3; parabolic and planar angle limiters 6 are arranged at the side positions of the parabolic concentrators 4 and the planar concentrators 5, respectively. A linear concentrator 7 is arranged at the top of the photochemical reaction tube 3, and a height lifter 8 is arranged at the right side of the linear concentrator 7. A filter with different light transmission ranges can be arranged on the linear concentrator 7, and a clamping device 9 is arranged at the upper left side of the linear concentrator 7 to fix the filter. A photocatalyst suspension tank 10 constitutes a loop system with the photochemical reaction tube 3, and a peristaltic pump 11 is arranged at the downstream end of the photocatalyst suspension tank 10, so as to control the flow rate and working time of the photocatalyst particles in the pipeline. A photovoltaic cell 12 is arranged directly below the photochemical reaction tube 3, a heat-conducting coating 13 is arranged below the photovoltaic cell 12, and a heat exchange cavity 14 is arranged below the heat-conducting coating 13. A heat fluid storage tank 23 constitutes a loop with the heat exchange cavity 14, a centrifugal pump 24 is arranged downstream of the heat fluid storage tank 23, an electromagnetic valve 25 is arranged downstream of the centrifugal pump 24, and the heat fluid passing through the heat exchange cavity 14 is transmitted to the oil pipeline through a spiral heat-conducting pipe 26. Meanwhile, a temperature feedback system 27 is arranged in the loop to monitor the temperature of the heat fluid in the loop. A direct current inverter 15 is arranged at the downstream end of the photovoltaic cell 12, and an energy storage device 16 is arranged downstream of the direct current inverter 15. An electrolytic tank 17 is arranged downstream of the energy storage device 16, and a hydrogen storage tank 18 is arranged downstream of the electrolytic tank 17. The hydrogen storage tank 18 is connected to a stop valve 19, a fuel cell 20 is arranged downstream of the stop valve 19, an electric heater 21 is arranged downstream of the fuel cell 20, and an oil storage tank 22 is arranged at the upper part of the electric heater 21. The oil pipeline and the spiral heat-conducting pipe 26 outside the oil pipeline are connected to the oil storage tank.

[0039] In the embodiment, the photochemical reaction tube 3 is designed in an equal-diameter structure, the inlet is a tapered inlet 28, which is arranged at a lower position in the radial direction, so as to increase the inlet flow rate, and the outlet is an expanded outlet 29, which is arranged at an upper position in the radial direction, so as to facilitate the flow of particles, and the inlet and the outlet are designed to be staggered, so as to improve the dispersion degree of the particles in the fluid. Rotatable disturbance shafts 30 are symmetrically arranged at the lower side of the photochemical reaction tube 3, which can increase the local turbulence degree of the particle flow.

[0040] In the embodiment, the heat fluid storage tank 23 stores a mixed nanofluid with a mass concentration of 5wt% Al2O3 and 5wt% CuO, which has high thermal conductivity. The inside of the heat exchange cavity 14 is a linear laminated array type "J" shape structure 31, which can significantly increase the heat exchange area and heat exchange effect, and transmit more heat to the spiral heat-conducting pipe 26.

[0041] In this embodiment, the height of the photochemical reaction tube 3 from the linear concentrator 7 can be adjusted by the height lifter 8, with an adjustment range of 0-20 cm. The geometric concentration ratio of the linear concentrator 7 is between 10-30, and the wavelength range of the filter placed on it can be optimally selected according to the actual photochemical reaction absorption and the absorption range of the photovoltaic 12.

[0042] In this embodiment, before the experiment starts, the manual gas valve 2 needs to be opened to release the inert gas cylinder 1 to discharge the residual oxygen in the photochemical reaction tube 3. The parabolic concentrator 4 can adjust the minimum incident angle of the parabolic concentrator 4 to control the uniformity of the photons on the photochemical reaction tube 3. The angle limiter 6 of the planar concentrator 5 can adjust the exit angle range of the photons passing through the photochemical reaction tube 3 and its uniformity on the photovoltaic 12.

[0043] In this embodiment, the waste heat at the back of the photovoltaic 12 is transferred to the heat-conducting fluid flowing through the heat exchange cavity 14 through the heat-conducting coating 13. The heated heat-conducting fluid further heats the crude oil flowing in the pipeline through the spiral heat-conducting pipe 26 wound on the crude oil pipeline to reduce its viscosity and increase its flowability. The centrifugal pump 24 and the electromagnetic valve 25 can cooperatively control the flow rate and flow velocity of the heat-conducting fluid in the pipeline according to the monitoring signal of the temperature feedback system 27.

[0044] In this embodiment, the photocatalyst suspension tank 10 can store a photocatalyst particle suspension, which completes the photocatalytic hydrogen production reaction in the photochemical reaction tube 3. The product hydrogen gas is separated from the liquid inside the photocatalyst suspension tank 10. At the same time, the electric energy generated by the photovoltaic 12 can be stored in the energy storage device 16, or further converted into hydrogen gas through the electrolytic reaction of the electrolytic tank 17 driven by the energy storage device 16. The two sources of hydrogen gas can be stored for a long time in the hydrogen storage tank 18.

[0045] In this embodiment, the hydrogen gas in the hydrogen storage tank 18 can be converted into electric energy through the fuel cell 20 according to the actual on-site demand, and further converted into heat energy based on the electric heater 21 to heat the crude oil storage tank 22 to achieve the purpose of viscosity reduction. The stop valve 19 can control the mass flow rate of hydrogen gas and the corresponding total power generation of the fuel cell 20.

[0046] In this embodiment, the solar energy resource utilized by the entire system is the outdoor direct solar energy at the oilfield development or gathering site where the system is located.

[0047] Embodiment 2

[0048] As shown in Figs. 1-3 , the present application provides a hydrogen storage and energy and crude oil drag reduction integrated method for remote oil and gas fields, which comprises:

[0049] Before the system works, the nitrogen or argon gas is filled in the inert gas bottle 1, the TiO2 or CdZnS or ZnS photocatalyst suspension with certain concentration is configured in the photocatalyst suspension tank 10, the crude oil is filled in the crude oil storage tank 22, and the mixed nanofluid with 5wt% Al2O3 and 5wt% CuO is configured in the heat fluid storage tank 23. When the system works, the flow of inert gas is controlled by the manual gas valve 2, and the residual air in the photochemical reaction tube 3 is removed. Then, the peristaltic pump 11 is started to transport the stable dispersed photocatalyst particle suspension into the photochemical reaction tube 3, which enters through the conical inlet 28 and forms a microjet state, and then returns to the photocatalyst suspension tank 10 through the expanding outlet 29. In the photochemical reaction tube 3, the rotating disturbance shaft forms a turbulent effect on the internal particles to prevent the particles from settling. During the reaction, the outdoor direct solar energy is radiated to the inside of the photochemical reaction tube 3 through the filter above the linear condenser 7 and the linear condenser 7 itself, driving the photocatalytic hydrogen production reaction, and the obtained hydrogen is separated above the photocatalyst suspension tank 10 and can be stored in the hydrogen storage tank 18. The part of the photons that pass through the photochemical reaction tube 3 further radiate to the surface of the photovoltaic 12 to generate direct current power, which can be obtained by the direct current inverter 15 to get the power with a set current and voltage interval and stored in the energy storage device 16. The energy in the energy storage device 16 can be selectively obtained by the electrolysis reaction in the electrolytic tank 17 to obtain hydrogen and store it in the hydrogen storage tank 18. The part of the photons that cannot be utilized by the photovoltaic 12 will be converted into heat energy and transferred to the heat exchange cavity 14 through the heat conduction coating 13. The heat conducting fluid in the above configuration is controlled by the centrifugal pump 24 and the electromagnetic valve 25 to transfer heat to the spiral heat conducting pipe 26 and heat the oil pipeline. The temperature feedback system 27 can feedback the flow and flow rate parameters in the system. Similarly, the hydrogen in the hydrogen storage tank 18 can be heated by the fuel cell 20 and the electric heater 21 in the form of hydrogen-electricity-heat and further used to heat the crude oil storage tank 22 to improve the flowability of the crude oil and reduce the energy consumption of the resistance transportation. In addition, the hydrogen energy in the hydrogen storage tank 18 can be used as a long-term energy storage resource for a long time, and can be used for hydrogen-electricity complementary conversion to realize the dual effect of hydrogen energy storage and crude oil viscosity reduction transportation.

[0050] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the exact details shown above and described herein, and obvious modifications will occur to those skilled in the art upon reading the foregoing description. Therefore, the scope of the application is not to be determined by the specific examples shown above, but only by the claims below. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0051] In addition, it should be understood that although the present specification describes particular embodiments, each of which contains only a single independent technical solution, the specification is merely a description of certain embodiments of the application, and the skilled person should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that the skilled person can understand. The above is only to illustrate the technical idea of the present application, and cannot limit the protection scope of the present application. Any modification made on the basis of the technical idea of the present application, which is formed on the basis of the technical solutions, falls within the protection scope of the claims of the present application.

Claims

1. A remote oil and gas field hydrogen energy storage and crude oil drag reduction integrated system, characterized in that, The utility model relates to a kind of photochemical reaction device, including inert gas cylinder (1), manual gas valve (2) being arranged at the downstream end of inert gas cylinder (1) and photochemical reaction tube (3) being arranged at the downstream end of manual gas valve (2); Parabolic concentrator (4) is symmetrically placed on the upper part of photochemical reaction tube (3) on both sides, and plane concentrator (5) is symmetrically arranged on the lower part of photochemical reaction tube (3) on both sides;Parabolic concentrator (4) and plane concentrator (5) are provided with parabolic and plane angle limiters (6) on the side, respectively;Linear concentrator (7) is arranged on the top of photochemical reaction tube (3), and height lifter (8) is arranged on the right side of linear concentrator (7);A filter for placing different light transmission ranges is arranged on the upper surface of linear concentrator (7), and a clamping device (9) is arranged on the upper left side of linear concentrator (7) for fixing the filter;Photocatalyst suspension tank (10) constitutes a loop system with photochemical reaction tube (3), and peristaltic pump (11) is arranged at the downstream end of photocatalyst suspension tank (10);Photovoltaic (12) is arranged directly below photochemical reaction tube (3), heat-conducting coating (13) is arranged below photovoltaic (12), and heat exchange cavity (14) is arranged below heat-conducting coating (13);Heat fluid storage tank (23) constitutes a loop with heat exchange cavity (14), centrifugal pump (24) is arranged downstream of heat fluid storage tank (23), solenoid valve (25) is arranged downstream of centrifugal pump (24), and the heat fluid after flowing through heat exchange cavity (14) transmits heat to oil pipeline through spiral heat-conducting pipe (26);At the same time, temperature feedback system (27) is arranged in the loop for monitoring the temperature of heat fluid in the loop;Direct current inverter (15) is arranged at the downstream end of photovoltaic (12), energy storage device (16) is arranged downstream of direct current inverter (15);Electrolytic cell (17) is arranged downstream of energy storage device (16), and hydrogen storage tank (18) is arranged downstream of electrolytic cell (17);Hydrogen storage tank (18) is connected to stop valve (19), fuel cell (20) is arranged downstream of stop valve (19), electric heater (21) is arranged downstream of fuel cell (20), and crude oil storage tank (22) is arranged on the upper part of electric heater (21), and oil pipeline and spiral heat-conducting pipe (26) outside oil pipeline are connected to crude oil storage tank; The inside of heat exchange cavity (14) is linearly stacked array type "J" shape structure (31), for increasing heat exchange area and heat exchange effect, more heat is transmitted to spiral heat-conducting pipe (26); The waste heat of back photovoltaic (12) is transmitted to heat-conducting fluid flowing through heat exchange cavity (14) through heat-conducting coating (13);The heated heat-conducting fluid further heats the crude oil flowing in pipeline through spiral heat-conducting pipe (26) wound on the crude oil pipeline; The hydrogen in hydrogen storage tank (18) can be converted into electric energy through fuel cell (20) according to actual site demand, and further converted into heat energy based on electric heater (21) to heat crude oil storage tank (22) to achieve the purpose of reducing viscosity.

2. The hydrogen storage and energy and crude oil drag reduction integrated system for remote oil and gas fields according to claim 1, characterized in that, The photochemical reaction tube (3) is designed as an equal-diameter structure, the inlet is a tapered inlet (28), and the outlet is an expanded outlet (29) at a position radially lower than the inlet, and the inlet and outlet are staggered to improve the dispersion of particles in the fluid; a rotatable disturbance shaft (30) is symmetrically arranged on the lower side of the photochemical reaction tube (3) to increase the local turbulence of the particle flow.

3. The hydrogen storage and energy and crude oil drag reduction integrated system for remote oil and gas fields according to claim 1, characterized in that, The thermal fluid storage tank (23) stores a mixed nanofluid with a mass concentration of 5wt% Al2O3 and 5wt% CuO.

4. The hydrogen storage and energy and crude oil drag reduction integrated system for remote oil and gas fields according to claim 1, characterized in that, The height of the photochemical reaction tube (3) from the linear concentrator (7) can be adjusted by the height lifter (8), and the adjustment range is 0-20 cm; the geometric concentration ratio of the linear concentrator (7) is between 10-30, and the wavelength range of the filter placed thereon can be optimized according to the actual photochemical reaction absorption and the absorption range of the photovoltaic (12).

5. The hydrogen storage and energy and crude oil drag reduction integrated system for remote oil and gas fields according to claim 1, characterized in that, The parabolic angle limiter (6) can adjust the minimum incident angle of the parabolic concentrator (4) to control the uniformity of photon radiation on the photochemical reaction tube (3); the angle limiter (6) of the flat concentrator (5) can adjust the emission angle range of the photons transmitted through the photochemical reaction tube (3) and the uniformity thereof on the photovoltaic (12).

6. The hydrogen storage and energy and crude oil drag reduction integrated system for remote oil and gas fields according to claim 1, characterized in that, The photocatalyst suspension tank (10) stores a photocatalyst particle suspension, which completes the photocatalytic hydrogen production reaction in the photochemical reaction tube (3), and the product hydrogen gas completes gas-liquid separation inside the photocatalyst suspension tank (10); at the same time, the electric energy generated by the photovoltaic (12) can be stored in the energy storage device (16), or further driven by the energy storage device (16) to drive the electrolytic tank (17) to produce hydrogen gas through electrolysis.

7. A hydrogen storage energy and crude oil drag reduction integrated method for remote oil and gas fields, characterized in that, The method is based on the hydrogen storage and energy and crude oil drag reduction integrated system for a remote oil and gas field according to any one of claims 1 to 6, comprising: Before work, the inert gas cylinder (1) is filled with nitrogen or argon, the photocatalyst particle suspension tank (10) stores the photocatalyst particle suspension, the crude oil storage tank (22) stores the crude oil extracted on site, and the heat fluid storage tank (23) stores the mixed nanofluid with a mass concentration of 5wt% Al2O3 and 5wt% CuO; during work, first, the flow of inert gas is controlled by the manual air valve (2) to drive away the residual air in the photochemical reaction tube (3); then, the peristaltic pump (11) is started to deliver the stably dispersed photocatalyst particle suspension to the inside of the photochemical reaction tube (3) to form a microjet state and further flow back to the photocatalyst suspension tank (10); during the reaction, the outdoor direct solar energy is radiated to the inside of the photochemical reaction tube (3) after passing through the filter above the linear condenser (7) and the linear condenser (7) itself to drive the photocatalytic hydrogen production reaction, and the obtained hydrogen is separated above the photocatalyst suspension tank (10) and stored in the hydrogen storage tank (18); the part of photons that pass through the photochemical reaction tube (3) further radiate to the surface of the photovoltaic (12) to generate direct current power, and the direct current power is stored in the energy storage device (16) through the direct current inverter (15) to obtain the power with a set current and voltage interval; the power in the energy storage device (16) selectively obtains hydrogen through the electrolysis reaction in the electrolytic cell (17) and stores it in the hydrogen storage tank (18); the part of photons that cannot be utilized by the photovoltaic (12) will be converted into heat energy and transferred to the heat exchange cavity (14) through the heat conduction coating (13); the heat conduction fluid transfers heat to the spiral heat conduction pipe (26) under the cooperative control of the centrifugal pump (24) and the electromagnetic valve (25) and heats the oil delivery pipe; the temperature feedback system (27) plays a feedback role in adjusting the flow and flow rate parameters in the system; the hydrogen in the hydrogen storage tank (18) obtains heat in the form of hydrogen-electricity-heat through the fuel cell (20) and the electric heater (21) and is further used to heat the crude oil storage tank (22), and the flowability of the crude oil is improved through the heating viscosity reduction effect.

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