A storage stable antioxidant blended gasoline blending device and method thereof

Abstract

The application discloses a kind of storage-resistant antioxidant blending gasoline blending device and method, belong to gasoline stirring technical field, to solve the problem that conventional rotary injector nozzle is fixed, jet coverage is limited, tank wall and blind area is easily mixed unevenly, affect oil product stability, the application includes blending tank, the circumferential side wall of the inner chamber of blending tank is fixedly installed with the rotary injection assembly for blending gasoline, and the liquid inlet end of rotary injection assembly is communicated with valve one by oil pipe, and the inner wall of liquid outlet end of rotary injection assembly is fixedly installed with a plurality of auxiliary blending components for enhancing gasoline blending, the auxiliary blending component in the application automatically extends and conducts under high pressure, so that branch jet stream and main jet stream cooperatively form three-dimensional multidirectional turbulent flow field, directional impact tank wall and injection blind area, effectively avoid local concentration deviation of additive, guarantee gasoline antioxidant property and storage stability.

Description

Technical Field

[0001] This invention relates to the field of gasoline mixing technology, specifically to a storage-resistant and oxidation-resistant gasoline blending device and method. Background Technology

[0002] Gasoline blending is a crucial step in the petroleum refining process. Its purpose is to mix base oils of different components with various additives in a certain proportion to obtain finished gasoline with good anti-knock properties, oxidation resistance, and storage stability. Traditional gasoline blending methods mostly use mechanical agitators or static mixers, physically mixing gasoline and additives by installing agitators in the blending tank. With the expansion of blending scale and the improvement of product quality requirements, blending systems have gradually developed that use circulating pumps to construct external circulation loops and install rotary injection devices in the tank for fluid agitation. These systems use the impact and reaction forces of high-pressure jets to drive the injection end to rotate, thereby achieving overall circulation and mixing of the fluid in the tank. This reduces the risk of sealing leaks in internal rotating parts to a certain extent and improves the level of automation in blending.

[0003] Existing rotary injection gasoline blending devices still have significant shortcomings in practical applications. Specifically, conventional rotary injectors have a fixed number and position of nozzles, resulting in limited jet coverage. Uneven mixing areas are easily formed near the tank wall and in the injection blind zone, leading to localized additive concentration deviations and affecting the gasoline's antioxidant properties and storage stability. To improve the mixing effect, the circulating pump usually needs to be maintained at high injection pressure for a long time, which not only increases energy consumption but also prolongs the circulation time of gasoline under high temperature and pressure, exacerbating the volatilization and oxidation of light components and reducing product yield and quality. Currently, some improvement solutions have introduced electronically controlled valves or adjustable nozzles to achieve dynamic adjustment. However, gasoline blending is a flammable and explosive high-risk scenario, and the explosion-proof modification of electronic control components is costly, unreliable, and susceptible to corrosion failure by oil and gas, making it difficult to meet the requirements of safe production.

[0004] To address the above problems, a storage-resistant and oxidation-resistant blending gasoline blending device and method are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a storage-resistant and oxidation-resistant blending gasoline blending device and method. By using this invention, the problems of fixed nozzles, limited jet coverage, uneven mixing in tank walls and blind areas, and the resulting impact on oil stability in conventional rotary injectors are solved.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a storage-resistant and oxidation-resistant blending gasoline blending device, comprising a blending tank, a valve one for gasoline inlet fixedly installed on the lower half of the outer circumference of the blending tank, a valve two for gasoline outlet fixedly installed on the bottom of the blending tank, a circulating pump for circulating gasoline provided on one side of the blending tank, the inlet end of the circulating pump being connected to valve two via an oil pipe, the outlet end of the circulating pump being connected to valve one via an oil pipe, a control box for controlling the start and stop of the circulating pump being fixedly installed on the outer circumference of the blending tank, a rotary injection assembly for blending gasoline being fixedly installed on the circumferential side wall of the inner cavity of the blending tank, and the inlet end of the rotary injection assembly being connected to valve one via an oil pipe, and a plurality of auxiliary blending components for enhancing gasoline blending being fixedly installed on the inner wall of the outlet end of the rotary injection assembly.

[0007] Furthermore, the rotary injection assembly includes several legs fixedly installed on the circumferential side wall of the inner cavity of the mixing tank, and a rotary injector for gasoline injection is fixedly installed on the legs. The rotary injector includes a flange two fixedly installed at the outlet of the oil pipe, a flange one fixedly installed on the flange two, and the flange one fixedly installed on the legs. A distribution chamber for distributing gasoline is rotatably installed at the upper end of the flange one, and several main injection pipes for injecting gasoline are fixedly installed on the circumferential outer wall of the distribution chamber.

[0008] Furthermore, the main injection pipe includes a pipe body for injecting gasoline that is fixedly installed on the outer circumference of the splitting chamber. A reducing pipe for increasing the gasoline fluid pressure is fixedly installed on the circumferential side wall of the inner cavity of the pipe body. An inlet hole is opened on the side wall of the reducing pipe facing the splitting chamber, and an outlet hole is opened on the side wall of the reducing pipe facing the outlet end of the pipe body. The width of the inlet hole is larger than the diameter of the outlet hole. A branch injection pipe is fixedly installed on the outer circumferential wall of the pipe body. The branch injection pipe passes through the pipe body and is connected to the reducing pipe. An auxiliary blending component is set inside the branch injection pipe.

[0009] Furthermore, the auxiliary mixing component includes a fixing bracket fixedly installed on the circumferential side wall of the inner cavity of the branch injection pipe. A blocking column is fixedly installed on the side wall of the fixing bracket facing the outlet end of the branch injection pipe. Several limiting columns are also fixedly installed on the side wall of the fixing bracket facing the outlet end of the branch injection pipe, and the limiting columns are symmetrically and evenly distributed around the blocking column. An auxiliary injection port is slidably arranged in the inner cavity of the branch injection pipe. Several mounting grooves are opened inside the auxiliary injection port. The limiting columns are slidably installed inside the mounting grooves, and the side wall of the mounting groove and the limiting columns are elastically connected by springs. A liquid guiding hole is opened inside the auxiliary injection port. The blocking column is slidably installed inside the liquid guiding hole, and the outer diameter of the blocking column is consistent with the inner diameter of the liquid guiding hole.

[0010] Furthermore, a rotating component is fixedly installed on the circumferential sidewall of the inner cavity of the liquid guide hole, and a turbulence-disrupting component is fixedly installed on the sidewall of the rotating component facing the outlet end of the branch injection pipe. The rotating component drives the turbulence-disrupting component to rotate, thereby enhancing gasoline blending.

[0011] Furthermore, the rotating assembly includes a bracket fixedly mounted on the circumferential sidewall of the inner cavity of the liquid guide hole, a blade rotatably mounted on the bracket, and several connecting rods fixedly mounted on the circumferential sidewall of the blade shaft.

[0012] Furthermore, the turbulence assembly includes an impeller fixedly mounted on the side wall of the connecting rod, with a through flow channel inside the impeller, which is connected to the liquid guide hole.

[0013] Furthermore, the rotary spraying assembly, the auxiliary mixing assembly, and all components inside the rotary assembly are coated with an oil-resistant and corrosion-resistant composite coating.

[0014] Furthermore, the spoiler assembly is located inside the branch injection pipe.

[0015] The present invention also proposes another technical solution: a method for blending storage-resistant and oxidation-resistant gasoline, comprising the following steps: S1: Pour the gasoline to be blended and the raw materials required for blending into the blending tank; S2: The operator starts the circulation pump through the control box to pressurize the gasoline and spray the high-pressure gasoline fluid pumped by the pump out from the pipe on the rotary injection assembly, so as to realize the rotation and blending of the rotary injection assembly. S3: As the gasoline pressure continues to increase, when the gasoline fluid pressure reaches the set threshold, the auxiliary blending component will automatically extend and be turned on, so that the gasoline is sprayed out from the branch injection pipe and participates in the injection as the branch liquid outlet end, forming a three-dimensional multi-directional turbulent field with the main nozzle jet. S4: The high-pressure gasoline injected by the auxiliary blending component is driven by the rotating component to rotate the turbulence component at high speed, so that the final injected gasoline has rotational turbulence, which enhances micro-mixing; S5: After the mixing is completed, the turbulence component retracts into the interior of the branch injection pipe under the elastic force of the spring; S6: The operator shuts off the circulating pump via the control box, and the rotating spray assembly stops running; at this time, a sample is taken. If the parameters are qualified, the blending is stopped; if the parameters are not qualified, the above steps are repeated to continue the blending operation.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The auxiliary blending component in this invention automatically extends and becomes conductive under high pressure, enabling the branch jet and the main jet to work together to form a three-dimensional multi-directional turbulent field, which directionally impacts the tank wall and the injection blind zone, effectively avoiding local concentration deviations of the additive and ensuring the oxidation resistance and storage stability of gasoline.

[0017] 2. The auxiliary blending component in this invention automatically activates only during the high-pressure enhancement stage, achieving an injection mode with on-demand pressurization. It can achieve rapid homogeneous mixing without maintaining extremely high circulation pump pressure for a long time, shortening the blending time per batch, reducing the running time of the circulation pump, and reducing power consumption. At the same time, the circulation time of gasoline under high temperature and high pressure is shortened, effectively reducing the volatilization and oxidative deterioration of light components, and improving product yield and quality.

[0018] 3. The extension and conduction of the auxiliary blending component in this invention are achieved entirely by fluid pressure and elastic reset components such as springs, without involving any solenoid valves, electric regulating valves or other electronic control components. It is a purely mechanical passive structure. This design fundamentally avoids the risk of electric sparks or corrosion failure that may occur in the oil and gas environment. It does not require expensive explosion-proof modifications, meets the safety production requirements of petrochemical sites, and improves the long-term operational reliability of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the installation position of the rotary jet assembly of the present invention; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a three-dimensional structural diagram of the rotary jet assembly of the present invention; Figure 5 for Figure 4 Enlarged view of point B; Figure 6 This is a schematic diagram showing the installation position of the auxiliary harmonizing component of the present invention; Figure 7 for Figure 6 Enlarged view of point C; Figure 8 for Figure 7 Enlarged view of point D; Figure 9 This is a disassembly diagram of the auxiliary blending component of the present invention; Figure 10 for Figure 9 Enlarged view of point E.

[0020] In the diagram: 1. Mixing tank; 2. Valve 1; 3. Valve 2; 4. Circulation pump; 5. Oil pipe; 6. Control box; 7. Rotary jet assembly; 71. Support leg; 72. Flange 1; 73. Flange 2; 74. Diverter chamber; 75. Main jet pipe; 751. Pipe body; 752. Reduced diameter pipe; 753. Liquid inlet; 754. Liquid outlet; 755. Branch jet pipe; 8. Auxiliary mixing assembly; 81. Fixing frame; 82. Limiting post; 83. Auxiliary jet port; 84. Mounting groove; 85. Spring; 86. Sealing post; 87. Liquid guide hole; 9. Rotary assembly; 91. Support; 92. Blade; 93. Connecting rod; 10. Turbulence assembly; 101. Impeller; 102. Through flow channel. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, a storage-resistant and oxidation-resistant gasoline blending device includes a blending tank 1 for holding the gasoline to be blended and other raw materials required for blending. A valve 2 for gasoline inlet is fixedly installed on the lower half of the outer circumference of the blending tank 1, and a valve 3 for gasoline outlet is fixedly installed at the bottom of the blending tank 1. A circulating pump 4 for circulating gasoline is installed on one side of the blending tank 1. The inlet end of the circulating pump 4 is connected to the valve 3 via an oil pipe 5, and the outlet end of the circulating pump 4 is connected to the valve 2 via an oil pipe 5. The arrangement of the circulating pump 4, valves 2 and 3, and oil pipe 5 forms a gasoline circulation loop. A control box 6 for controlling the start and stop of the circulating pump 4 is fixedly installed on the outer circumference of the blending tank 1. The control box 6 is not only used to control the start and stop of the circulating pump 4, but can also be linked to other stages of gasoline production, enabling both manual and remote control.

[0023] like Figure 2As shown, a rotary injection assembly 7 for blending gasoline is fixedly installed on the circumferential side wall of the inner cavity of the blending tank 1. The inlet end of the rotary injection assembly 7 is connected to valve 2 via an oil pipe 5. As part of the gasoline circulation loop, during the gasoline blending process, the operator starts the circulation pump 4 through the control box 6. The circulation pump 4 draws gasoline from the blending tank 1 through valve 3 and oil pipe 5, and then delivers it to the rotary injection assembly 7 through oil pipe 5 and valve 2. The high-pressure gasoline fluid pumped in is then sprayed out at high speed from the outlet end of the rotary injection assembly 7, converting it into a powerful jet to impact or stir the gasoline and other raw materials. At the same time, the sprayed jet generates a reaction force in the opposite direction, pushing the outlet end to rotate slowly, allowing the jet to cover the entire body of the blending tank 1, thus achieving the effect of gasoline blending. The number, size, and setting angle of the outlet end of the rotary injection assembly 7 shown in the figure are only for illustrating the principle. The specific number, size, and installation angle are subject to actual conditions.

[0024] To address the technical problem of dead zones inside the mixing tank 1 that are difficult to cover with traditional rotary jets, thus affecting the uniformity of mixing, the following preferred technical solution is provided: like Figures 6-9 As shown, several auxiliary blending components 8 for enhancing gasoline blending are fixedly installed on the inner wall of the liquid outlet end of the rotary injection component 7. During the enhanced blending stage, the gasoline injection pressure is at a relatively high level. At this time, the gasoline fluid pressure will push the auxiliary blending components 8 to extend outward and conduct, so that a portion of the gasoline is sprayed out from the auxiliary blending components 8 at a higher speed. That is, when the auxiliary blending components 8 are in the conducting state, they can act as branch liquid outlets to spray gasoline. With the above settings, when the gasoline fluid pressure reaches the set threshold, the auxiliary blending components 8 will automatically extend and conduct, acting as branch liquid outlets to participate in the injection, which can significantly enhance local disturbance and overall stirring intensity.

[0025] like Figure 3 and Figure 4 As shown, the rotary injection assembly 7 includes several legs 71 fixedly installed on the circumferential side wall of the inner cavity of the mixing tank 1. A rotary injector for gasoline injection is fixedly installed on the legs 71. The rotary injector includes a flange 2 73 fixedly installed at the outlet of the oil pipe 5. A flange 1 72 is fixedly installed on the flange 2 73 and fixedly installed on the legs 71. A distribution chamber 74 for distributing gasoline is rotatably installed at the upper end of the flange 1 72. Several main injection pipes 75 for injecting gasoline are fixedly installed on the outer circumferential wall of the distribution chamber 74. The main injection pipes 75 correspond to the outlet end of the rotary injection assembly 7.

[0026] During operation, the circulating pump 4 extracts gasoline from the blending tank 1 through valve 2 3 and oil pipe 5, and then delivers it to the rotary injection assembly 7 through oil pipe 5 and valve 1 2. The pumped high-pressure gasoline fluid enters the diversion chamber 74 through flange 2 73 and flange 1 72, and finally sprays out from the main injection pipe 75, generating a reaction force in the opposite direction, which pushes the liquid outlet end to rotate slowly, allowing the jet to cover the entire body of the blending tank 1, thus achieving the effect of gasoline blending.

[0027] like Figure 6 and Figure 7 As shown, the main injection pipe 75 includes a pipe body 751 that is fixedly installed on the outer circumference of the splitting chamber 74 for injecting gasoline. A reducing pipe 752 that increases the gasoline fluid pressure is fixedly installed on the circumferential side wall of the inner cavity of the pipe body 751. An inlet hole 753 is opened on the side wall of the reducing pipe 752 facing the splitting chamber 74, and an outlet hole 754 is opened on the side wall of the reducing pipe 752 facing the outlet end of the pipe body 751. The width of the inlet hole 753 is larger than the diameter of the outlet hole 754. A branch injection pipe 755 is fixedly installed on the outer circumferential side wall of the pipe body 751. The branch injection pipe 755 penetrates the pipe body 751 and is connected to the reducing pipe 752. An auxiliary mixing component 8 is disposed inside the branch injection pipe 755.

[0028] When gasoline enters the pipe body 751, it enters the cavity of the narrowing pipe 752 through the inlet hole 753, and then exits through the outlet hole 754, finally being sprayed out from the outlet end of the pipe body 751. During this process, since the width of the inlet hole 753 is greater than the diameter of the outlet hole 754, it means that the liquid inlet of the inlet hole 753 is greater than the liquid outlet of the outlet hole 754. This causes the fluid pressure of the gasoline to increase as it passes through the narrowing pipe 752, which in turn causes the gasoline to generate a high-speed jet that is sprayed out from the outlet end of the pipe body 751. This generates a reaction force in the opposite direction, which drives the flow divider 74, the main injection pipe 75, and the auxiliary blending assembly 8 to rotate slowly around the flange 72 in sync, thereby realizing the blending operation of the gasoline.

[0029] like Figures 7-9As shown, the auxiliary mixing component 8 includes a fixing frame 81 fixedly installed on the circumferential side wall of the inner cavity of the branch injection pipe 755. A sealing post 86 is fixedly installed on the side wall of the fixing frame 81 facing the outlet end of the branch injection pipe 755. Several limiting posts 82 are also fixedly installed on the side wall of the fixing frame 81 facing the outlet end of the branch injection pipe 755, and these limiting posts 82 are symmetrically and evenly distributed around the sealing post 86. An auxiliary injection port 83 is slidably disposed in the inner cavity of the branch injection pipe 755. The outer diameter of the auxiliary injection port 83 is consistent with the inner diameter of the branch injection pipe 755, and the sliding connection between the auxiliary injection port 83 and the branch injection pipe 755 can be configured with a sliding seal. This sliding seal configuration is a mature existing technology and will not be discussed further here. To elaborate further, the purpose is to ensure that when the auxiliary injection port 83 is not in use, gasoline will not be sprayed out in large quantities from the gap between the auxiliary injection port 83 and the branch injection pipe 755, so as to ensure the injection pressure of gasoline at the outlet end of the pipe body 751. The auxiliary injection port 83 has several mounting slots 84 inside, and the number and position of the mounting slots 84 are consistent with the limiting post 82. The limiting post 82 is slidably installed inside the mounting slot 84, and the side wall of the mounting slot 84 and the limiting post 82 are elastically connected by a spring 85. The spring 85 is used to realize the reset action of the auxiliary injection port 83. The auxiliary injection port 83 has a liquid guiding hole 87 inside, and the sealing post 86 is slidably installed inside the liquid guiding hole 87, and the outer diameter of the sealing post 86 is consistent with the inner diameter of the liquid guiding hole 87.

[0030] Specifically, during the enhanced blending stage, the circulating pump 4 extracts gasoline from the blending tank 1 through valve 2 3 and oil pipe 5, and sends the pumped high-pressure gasoline fluid into the diversion chamber 74 through oil pipe 5, valve 1 2, flange 2 73 and flange 1 72; then, the high-pressure gasoline enters the cavity of the narrow-bore pipe 752 through the pipe body 751 and the inlet hole 753, and is pressurized inside the narrow-bore pipe 752. A portion of the pressurized gasoline will be injected from the outlet end of the pipe body 751 through the outlet hole 754, generating a reaction force in the opposite direction, which pushes the diversion chamber 74, the main injection pipe 75 and the auxiliary blending assembly 8 to rotate slowly around flange 1 72 in sync, thereby realizing the gasoline blending operation; During this process, due to the high fluid pressure of gasoline, the auxiliary injection port 83 moves away from the limiting post 82 and stretches the spring 85. When the sealing post 86 is pulled out from the inside of the liquid guide hole 87, the high-pressure gasoline fluid passes through the liquid guide hole 87 and the turbulence assembly 10 and is ejected from the outlet end of the branch injection pipe 755, thus achieving the functions of auxiliary propulsion and auxiliary blending; Figure 8As shown, the limiting post 82 is T-shaped and forms a limiting relationship with the protrusion at the opening of the mounting groove 84 to prevent the limiting post 82 from detaching from the mounting groove 84 and causing damage to the auxiliary injection port 83. In addition, the sliding connection between the limiting post 82 and the mounting groove 84 can be set with a sliding seal. The sliding seal setting is an existing mature technology and will not be described in detail here. Its purpose is to prevent gasoline from entering the interior of the mounting groove 84 and thus prevent the auxiliary injection port 83 from resetting.

[0031] With the above settings, when the gasoline fluid pressure reaches the set threshold, the auxiliary blending component 8 will automatically extend and become conductive, participating in the injection as a branch outlet end. It forms a three-dimensional multi-directional turbulent field with the main nozzle jet. The main nozzle is responsible for large-scale circulation entrainment, while the side branch is responsible for local shear disturbance. Under the dual action, the gasoline homogenization and blending time can be significantly shortened, the running time of the circulation pump 4 can be reduced, and the evaporation loss caused by long-term gasoline circulation can be reduced. It can significantly enhance local disturbance and overall stirring intensity, and achieve the blending effect of pressurization on demand. By arranging the auxiliary blending component 8 on the rotary injection component 7, it can accurately eject high-speed jets from specific positions, effectively impacting and stirring the dead corners inside the tank that are difficult to cover by traditional rotary injectors, thus improving the blending uniformity. In addition, existing variable channel injection schemes mostly rely on electronic control components such as solenoid valves and electric regulating valves to achieve channel switching. However, gasoline blending is a flammable and explosive high-risk scenario, and the electronic control components have high explosion-proof requirements, high procurement and maintenance costs, and are susceptible to corrosion by oil and gas, which can lead to failure. The auxiliary blending component 8 in this application can complete the expansion and contraction opening and closing by relying solely on fluid pressure and elastic reset components such as spring 85. It has no electrical components, is a purely mechanical passive structure, is inherently safe, and fully meets the petrochemical explosion-proof requirements.

[0032] To address the technical problems of long blending times and low efficiency, which lead to evaporation losses of gasoline due to prolonged circulation, the following preferred technical solutions are provided: like Figure 5 , Figure 7 and Figure 8 As shown, a rotating component 9 is fixedly installed on the circumferential side wall of the inner cavity of the liquid guide hole 87, and a turbulence 10 is fixedly installed on the side wall of the rotating component 9 facing the outlet end of the branch injection pipe 755. The rotating component 9 drives the turbulence 10 to rotate, thereby enhancing gasoline blending.

[0033] like Figure 8 and Figure 10 As shown, the rotating assembly 9 includes a bracket 91 fixedly installed on the circumferential side wall of the inner cavity of the liquid guide hole 87, a blade 92 rotatably mounted on the bracket 91, and several connecting rods 93 fixedly installed on the circumferential side wall of the shaft portion of the blade 92.

[0034] like Figures 8-10As shown, the turbulence assembly 10 includes an impeller 101 fixedly installed on the side wall of the connecting rod 93. The impeller 101 has a through flow channel 102 inside, which is connected to the liquid guide hole 87.

[0035] The internal components of the rotary injection assembly 7, auxiliary blending assembly 8, and rotary assembly 9 are coated with an oil-resistant and corrosion-resistant composite coating. For example, they can be coated with flame-retardant, temperature-resistant, and corrosion-resistant coatings, as well as strong oxidation-resistant and corrosion-resistant coatings, depending on the actual situation. This can extend the service life of components that are immersed in gasoline for a long time.

[0036] like Figure 8 As shown, the turbulence component 10 is located inside the branch injection pipe 755, which reduces the flow resistance when the rotating injection component 7 rotates, thus achieving energy saving.

[0037] Specifically, during the strong mixing process of gasoline, the gasoline fluid pressure is relatively high, causing the auxiliary injection port 83 to move away from the limiting post 82 and stretch the spring 85, pushing the impeller 101 to the outside of the branch injection pipe 755. When the sealing post 86 is pulled out from the inside of the liquid guide hole 87, the high-pressure gasoline fluid will pass through the liquid guide hole 87. During the process of the gasoline passing through the liquid guide hole 87, it will drive the blade 92 to rotate rapidly on the support 91. During the rotation of the blade 92, it will drive the impeller 101 to rotate synchronously through the connecting rod 93. Finally, the gasoline is sprayed out from the through flow channel 102 and can also drive the impeller 101 to rotate, further enhancing the blending effect. With the above settings, when the high-pressure gasoline flows through the branch injection pipe 755, it will drive the impeller 101 to rotate at high speed, so that the gasoline that is finally injected has rotational disturbance, which enhances the micro-mixing effect. In addition, the turbulence component 10 is designed inside the branch injection pipe 755, which can reduce flow resistance during normal rotation and play an energy-saving role. In summary, the technical solution in this application effectively reduces the evaporation loss of gasoline caused by long-term circulation by improving blending efficiency and shortening the running time of the circulation pump 4.

[0038] To better explain the above embodiments, the present invention also proposes another implementation method: a method for blending storage-resistant and oxidation-resistant gasoline, comprising the following steps: Step 1: Pour the gasoline to be blended and the ingredients required for blending into blending tank 1; Step 2: The operator starts the circulation pump 4 through the control box 6 to pressurize the gasoline, and sprays the high-pressure gasoline fluid pumped in from the pipe 751 on the rotary injection assembly 7 to realize the rotation and blending of the rotary injection assembly 7. Step 3: As the gasoline pressure continues to increase, when the gasoline fluid pressure reaches the set threshold, the auxiliary blending component 8 will automatically extend and open, so that gasoline is sprayed out from the branch injection pipe 755, and participates in the injection as the branch liquid outlet end, forming a three-dimensional multi-directional turbulent field with the main nozzle jet. Step 4: The high-pressure gasoline injected by the auxiliary blending component 8 is driven by the rotating component 9 to rotate the turbulence component 10 at high speed, so that the final injected gasoline has rotational turbulence, which enhances micro-mixing. Step 5: After the mixing is completed, under the elastic force of spring 85, the turbulence assembly 10 is retracted into the interior of the branch injection pipe 755. Step Six: The operator shuts off the circulating pump 4 via the control box 6, and the rotating spray assembly 7 stops running; at this time, a sample is taken. If the parameters are qualified, the blending is stopped; if the parameters are not qualified, the above steps are repeated to continue the blending operation.

[0039] The gasoline blended in this application has storage resistance and oxidation resistance. The specific blending steps are as follows: Storage-resistant and antioxidant blended gasoline base formula: By weight percentage, it consists of the following components: 45%–55% catalytic cracked gasoline, 15%–22% reformed gasoline, 10%–18% light naphtha, 8%–12% methyl tert-butyl ether, and 0.08%–0.15% composite antioxidant stabilizer, with the total of all components being 100%.

[0040] Among them, catalytic cracked gasoline provides the base octane number, reformed gasoline reduces olefin content and improves basic stability, light naphtha adjusts the distillation range and saturated vapor pressure, and methyl tert-butyl ether increases the octane number and reduces the aromatic content.

[0041] Compound antioxidant stabilizer formulation: By weight, it consists of the following components: 35-45 parts of primary antioxidant, 20-28 parts of secondary antioxidant, 12-18 parts of metal passivator, 10-15 parts of oil-soluble corrosion inhibitor, and 8-12 parts of co-solvent.

[0042] The functional division of each component is as follows: The main antioxidant (2,6-di-tert-butyl-p-cresol): captures peroxide free radicals and blocks chain oxidation reactions; Co-antioxidant (disodium thiodipropionate): decomposes peroxides and forms a dual synergistic system of free radical scavenging and peroxide decomposition with the main antioxidant; Metal passivating agent (N,N'-disalynyl-1,2-propanediamine): complexes trace metal ions such as copper, iron, and nickel, eliminating their catalytic oxidation effect; Oil-soluble corrosion inhibitor (alkenyl succinic acid): forms a protective film on the metal surface to inhibit organic acid corrosion; Cosolvent (anhydrous toluene): Improves the miscibility of additives with base oils and prevents precipitation and stratification.

[0043] Blending process for storage-resistant and oxidation-resistant blended gasoline: The process employs a three-stage low-temperature gradient blending method in a completely closed, oxygen-free environment. The specific steps are as follows: Raw material pretreatment: Catalytic cracking gasoline, reformed gasoline and light naphtha are precision filtered and dehydrated respectively to control the water content ≤30ppm; each base oil is transferred into a closed blending tank, and the air in the tank is replaced with nitrogen to make the oxygen volume content ≤1.5%, and the initial temperature is controlled at 25~30℃. Premixing of compound antioxidant stabilizers: Weigh each additive component according to the ratio, add it to the co-solvent, and stir for 25-30 minutes at 30-35℃ and 400r / min until completely dissolved to form a uniform and transparent additive mother liquor. Three-stage gradient low-temperature blending: In the first stage, add 30% of the mother liquor and stir at a constant temperature of 200 r / min (28℃) for 15 min; in the second stage, add the remaining 70% of the mother liquor and stir at a constant temperature of 350 r / min (28℃) for 25 min; in the third stage, stop stirring, seal and let stand statically at a constant temperature of 28℃ for 40 min to eliminate tiny bubbles and prevent air from dissolving in. Finished product testing and filling: Test indicators such as distillation range, octane number, gum content, copper strip corrosion, and oxidation stability. After passing the tests, the product is sealed and filled at low temperature to obtain the finished blended gasoline.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A storage-resistant and oxidation-resistant blending gasoline blending device, comprising a blending tank (1), wherein a valve 1 (2) for gasoline inlet is fixedly installed on the lower half of the outer circumference of the blending tank (1), a valve 2 (3) for gasoline outlet is fixedly installed on the bottom of the blending tank (1), a circulating pump (4) for circulating gasoline is provided on one side of the blending tank (1), the inlet end of the circulating pump (4) is connected to the valve 2 (3) through an oil pipe (5), the outlet end of the circulating pump (4) is connected to the valve 1 (2) through an oil pipe (5), and a control box (6) for controlling the start and stop of the circulating pump (4) is fixedly installed on the outer circumference of the blending tank (1), characterized in that: A rotary injection assembly (7) for blending gasoline is fixedly installed on the circumferential side wall of the inner cavity of the blending tank (1), and the liquid inlet end of the rotary injection assembly (7) is connected to the valve (2) through an oil pipe (5). Several auxiliary blending assemblies (8) for enhancing gasoline blending are fixedly installed on the inner wall of the liquid outlet end of the rotary injection assembly (7).

2. The storage-resistant and oxidation-resistant gasoline blending device according to claim 1, characterized in that: The rotary injection assembly (7) includes several legs (71) fixedly installed on the circumferential side wall of the inner cavity of the mixing tank (1). A rotary injector for gasoline injection is fixedly installed on the legs (71). The rotary injector includes a flange two (73) fixedly installed at the outlet of the oil pipe (5). A flange one (72) is fixedly installed on the flange two (73), and the flange one (72) is fixedly installed on the legs (71). A distribution chamber (74) for distributing gasoline is rotatably installed at the upper end of the flange one (72). Several main injection pipes (75) for injecting gasoline are fixedly installed on the outer circumferential wall of the distribution chamber (74).

3. The storage-resistant and oxidation-resistant blending gasoline blending device according to claim 2, characterized in that: The main injection pipe (75) includes a pipe body (751) for injecting gasoline, which is fixedly installed on the outer circumference of the split cavity (74). A reducing pipe (752) for increasing the gasoline fluid pressure is fixedly installed on the inner circumference side wall of the pipe body (751). An inlet hole (753) is opened on the side wall of the reducing pipe (752) facing the split cavity (74). An outlet hole (754) is opened on the side wall of the reducing pipe (752) facing the outlet end of the pipe body (751). The width of the inlet hole (753) is greater than the diameter of the outlet hole (754). A branch injection pipe (755) is fixedly installed on the outer circumference of the pipe body (751). The branch injection pipe (755) penetrates the pipe body (751) and is connected to the reducing pipe (752). An auxiliary mixing component (8) is disposed inside the branch injection pipe (755).

4. The storage-resistant and oxidation-resistant blending gasoline blending device according to claim 3, characterized in that: The auxiliary mixing component (8) includes a fixing bracket (81) fixedly installed on the circumferential side wall of the inner cavity of the branch injection pipe (755). A sealing column (86) is fixedly installed on the side wall of the fixing bracket (81) facing the outlet end of the branch injection pipe (755). Several limiting columns (82) are also fixedly installed on the side wall of the fixing bracket (81) facing the outlet end of the branch injection pipe (755), and the several limiting columns (82) are symmetrically and evenly distributed around the sealing column (86). The inner cavity of the branch injection pipe (755) is slidably equipped with a... An auxiliary injection port (83) is provided, and several mounting slots (84) are provided inside the auxiliary injection port (83). A limiting post (82) is slidably installed inside the mounting slot (84), and the side wall of the mounting slot (84) and the limiting post (82) are elastically connected by a spring (85). A liquid guiding hole (87) is provided inside the auxiliary injection port (83), and a sealing post (86) is slidably installed inside the liquid guiding hole (87), and the outer diameter of the sealing post (86) is consistent with the inner diameter of the liquid guiding hole (87).

5. The storage-resistant and oxidation-resistant blending gasoline blending device according to claim 4, characterized in that: A rotating component (9) is fixedly installed on the circumferential sidewall of the inner cavity of the liquid guide hole (87), and a turbulence component (10) is fixedly installed on the sidewall of the rotating component (9) facing the outlet end of the branch injection pipe (755). The rotating component (9) drives the turbulence component (10) to rotate, thereby enhancing the blending of gasoline.

6. The storage-resistant and oxidation-resistant blending gasoline blending device according to claim 5, characterized in that: The rotating assembly (9) includes a bracket (91) fixedly installed on the circumferential side wall of the inner cavity of the liquid guide hole (87), a blade (92) is rotatably installed on the bracket (91), and several connecting rods (93) are fixedly installed on the circumferential side wall of the shaft of the blade (92).

7. The storage-resistant and oxidation-resistant gasoline blending device according to claim 6, characterized in that: The turbulence assembly (10) includes an impeller (101) fixedly mounted on the side wall of the connecting rod (93). The impeller (101) has a through flow channel (102) inside, which is connected to the liquid guide hole (87).

8. The storage-resistant and oxidation-resistant gasoline blending device according to claim 7, characterized in that: The components inside the rotary spraying assembly (7), the auxiliary mixing assembly (8), and the rotary assembly (9) are coated with an oil-resistant and corrosion-resistant composite coating.

9. A storage-resistant and oxidation-resistant blending gasoline blending device according to claim 8, characterized in that: The spoiler assembly (10) is located inside the branch jet pipe (755).

10. A method for blending storage-resistant and oxidation-resistant gasoline, applied to the storage-resistant and oxidation-resistant gasoline blending apparatus according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Pour the gasoline to be blended and the raw materials required for blending into the blending tank (1); S2: The operator starts the circulation pump (4) through the control box (6) to pressurize the gasoline and spray the high-pressure gasoline fluid pumped from the pipe (751) on the rotary injection assembly (7) to realize the rotation and blending of the rotary injection assembly (7); S3: As the gasoline pressure continues to increase, when the gasoline fluid pressure reaches the set threshold, the auxiliary blending component (8) will automatically extend and be turned on, so that the gasoline is sprayed out from the branch injection pipe (755) and participates in the injection as the branch liquid outlet end, forming a three-dimensional multi-directional turbulent field with the main nozzle jet; S4: The high-pressure gasoline injected by the auxiliary blending component (8) is driven by the rotating component (9) to rotate the turbulence component (10) at high speed, so that the gasoline injected at the end has rotational turbulence, which enhances micro-mixing; S5: After the mixing is completed, under the elastic force of the spring (85), the turbulence assembly (10) is retracted into the interior of the branch injection pipe (755); S6: The operator shuts off the circulating pump (4) through the control box (6) and the rotating spray assembly (7) stops running; at this time, a sample is taken. If the parameters are qualified, the mixing is stopped; if the parameters are not qualified, the above steps are repeated to continue the mixing operation.

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