Preparation process of denatured ethanol gasoline

Abstract

The present invention discloses a denatured ethanol gasoline preparation process, and relates to the technical field of ethanol gasoline, the denatured ethanol gasoline preparation process comprises: selecting a suitable denaturant, determining the ratio of each component of the denaturant, and the denaturant comprises 60-70% of isopropanol and 30-40% of acetone; taking a proper amount of ethanol, gasoline, cosolvent, combustion improver and enhancer according to the ratio; taking the denaturing agent and the defoaming agent according to the ratio, and slowly stirring for 30 minutes; and continuously stirring at a low speed for 60 minutes at the rotating speed of 50-100 revolutions per minute, so that the ethanol, the gasoline and the denaturant are fully mixed. According to the invention, isopropanol and acetone are used as denaturants to denature the ethanol gasoline, and isopropanol and acetone are volatile organic compounds and can form a more uniform mixture with the ethanol gasoline, so that the combustion efficiency can be improved; isopropanol and acetone both contain oxygen elements, the oxygen content of the fuel can be increased in the combustion process, combustion is more sufficient, and therefore emission of carbon monoxide and unburnt hydrocarbon is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ethanol gasoline, and in particular to a preparation process of denatured ethanol gasoline. Background Art

[0002] Gasoline is a transparent liquid that is volatile and flammable. It is a mixture of hydrocarbons distilled and cracked from petroleum. It is mainly used as fuel and is an important energy source for engines, especially gasoline engines. The main components of gasoline are C5-C12 aliphatic hydrocarbons and cycloalkanes, as well as a certain amount of aromatic hydrocarbons. These components determine the physical and chemical properties of gasoline, such as volatility, density, octane number, etc. Gasoline has a high octane number (anti-knock combustion performance), which is an important indicator for evaluating gasoline combustion performance. The higher the octane number, the better the anti-knock performance of the gasoline, and the more it can adapt to gasoline engines with high compression ratios.

[0003] Since gasoline is made from petroleum resources, and petroleum is a non-renewable energy source, its resource reserves are limited. As the amount of extraction increases, its reserves gradually decrease. Ethanol, as a renewable resource, its raw materials come from renewable resources such as crops and forests. It has the characteristics of sustainable development. At the same time, the promotion of ethanol gasoline will not only help environmental protection, but also drive the development of related industries such as agriculture and chemical industry, create employment opportunities, and promote regional economic development. On the other hand, pure gasoline will produce more harmful gases during the combustion process, such as carbon monoxide, hydrocarbons, nitrogen oxides and particulate matter. These substances will have a certain impact on the environment and human health. Since ethanol gasoline is mixed with ethanol, a renewable resource, its combustion produces relatively few pollutants, which helps to reduce air pollution and greenhouse gas emissions. Therefore, ethanol gasoline has been widely promoted.

[0004] Ethanol gasoline is an alternative energy source formed by mixing fuel ethanol processed from grain and various plant fibers with regular gasoline in a certain proportion. In China, ethanol gasoline is blended according to national standards with 90% regular gasoline and 10% fuel ethanol, and is also marked as E10 (indicating that the ethanol content in gasoline is 10%); however, when ethanol gasoline contains a certain amount of water, it often suffers from undesirable phenomena such as power reduction, insufficient power, reduced combustion efficiency, increased fuel consumption, abnormal ignition and misfire, and ethanol has a strong hydrophilicity and will absorb moisture from the atmosphere, resulting in accelerated corrosion of the fuel supply system and other components. In addition, since ethanol gasoline itself is a mixture of ethanol and gasoline, the two do not react chemically, and due to the different densities of the two, after ethanol absorbs water, it will cause stratification of ethanol gasoline. Summary of the invention

[0005] The purpose of the present invention is to provide a preparation process of denatured ethanol gasoline to improve the compatibility of ethanol and gasoline, reduce the risk of stratification and improve the stability of the fuel.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A process for preparing denatured ethanol gasoline, the denatured ethanol gasoline comprising: gasoline, ethanol, an enhancer, a defoamer, a solubilizer and a combustion aid, and also comprising a denaturant, wherein the volume percentage of each component is: gasoline ratio is 85% to 90%, ethanol ratio is 10% to 15%, defoamer ratio is 0.1% to 0.5%, solubilizer ratio is 0% to 0.5%, combustion aid ratio is 0% to 0.3%, and denaturant ratio is 1.5% to 3% of the volume of ethanol, comprising the following steps:

[0008] S1: Select a suitable denaturant and determine the proportion of each component of the denaturant. The denaturant includes 60% to 70% isopropanol and 30% to 40% acetone;

[0009] Isopropyl alcohol and acetone are used as denaturants to denature ethanol gasoline. Since both isopropyl alcohol and acetone are volatile organic compounds, they can form a more uniform mixture with ethanol gasoline, which helps to improve combustion efficiency. Moreover, both isopropyl alcohol and acetone contain oxygen, which can increase the oxygen content of the fuel during the combustion process, making the combustion more complete, thereby reducing the emission of carbon monoxide and unburned hydrocarbons.

[0010] S2: Take appropriate amounts of ethanol, gasoline, solvent, combustion aid and enhancer according to the above ratio, add 90% of the gasoline into the mixing tank, then mix the taken ethanol, solvent, combustion aid and enhancer and add them into the mixing tank for premixing, the mixing temperature is 15-25°C, the mixing time is 25-30 minutes, and the mixing environment is kept closed;

[0011] Due to the volatility of ethanol, the evaporation of ethanol during the mixing process of ethanol and gasoline will reduce the amount of ethanol. The evaporation of ethanol is affected by temperature and pressure. The lower the temperature, the less ethanol evaporates. In the above process, ethanol and gasoline are pre-mixed in a closed environment. The mixing environment is kept closed during this process, aiming to fully mix ethanol and gasoline while reducing the amount of ethanol evaporation.

[0012] S3: Take the denaturant and defoamer according to the above ratio, mix with the remaining 10% of gasoline taken in step S2, add to the mixing tank, and stir slowly for 30 minutes at a mixing temperature of 25-35° C. to ensure that the denaturant is evenly distributed in the mixture;

[0013] Since the volume proportion of defoaming agent and denaturant is relatively small, the gasoline is divided into two parts for addition. The second part is used to mix the defoaming agent and denaturant and then put into the mixing tank together to reduce the error caused by the solvent adhering to the pipe wall or other parts. After the subsequent additives are added, stir slowly to ensure that the denaturant is evenly distributed in the mixture. The stirring temperature is appropriately increased in this process. At this temperature, the fluidity of ethanol and gasoline is improved, which can further improve the mixing effect.

[0014] S4: Continue stirring at a low speed of 50 to 100 rpm for 60 minutes to fully mix the ethanol, gasoline and denaturant to achieve a uniform and stable state, thereby obtaining denatured ethanol gasoline.

[0015] A further improvement of the technical solution of the present invention is that: a hollow shaft is rotatably connected to the top of the inner wall of the mixing tank, the top of the hollow shaft extends to the top of the mixing tank, the bottom of the hollow shaft is fixedly connected to a cylinder body, the bottom of the cylinder body is fixedly connected to a stirring rod, a motor is fixedly installed on the top of the mixing tank, the output end of the motor extends to the inside of the mixing tank and is fixedly connected to a driving gear, the outside of the hollow shaft is fixedly connected to a driven gear, and the driven gear is meshed with the driving gear; the stirring rod is set to a spiral ribbon structure, the central axis of the stirring rod is a hollow structure, the inside of the central axis of the stirring rod is connected to the cylinder body, and a one-way valve is installed, and the outside of the hollow shaft is close to the driving gear. A plurality of shunt pipes are fixedly connected to the part near the top, and a one-way valve is installed inside the shunt pipes, and the shunt pipes are inclined; a fixed cylinder is fixedly connected to the top of the mixing tank, an inner rod is fixedly connected to the top of the inner wall of the fixed cylinder, a first piston plate is slidably connected between the inner walls of the cylinder body, a sleeve rod is slidably connected to the top of the cylinder body, the bottom end of the sleeve rod extends to the inside of the cylinder body and is fixedly connected to the first piston plate, a transmission buckle is fixedly connected to the inner wall of the sleeve rod, the bottom end of the inner rod extends to the inside of the sleeve rod, a spiral transmission groove is provided on the outside of the inner rod, and the transmission buckle is slidably connected to the transmission groove; the temperature of the mixing tank is controlled by an external high and low temperature integrated circulation machine.

[0016] By adopting the above technical scheme, a mechanical method is used to assist in removing bubbles during the mixing process, so that bubbles in the mixed liquid can be reduced before adding the defoaming agent, and the use of the defoaming agent can be reduced. Specifically, during the rotation of the stirring rod, on the one hand, the inside of the mixing tank can be stirred, and on the other hand, the sleeve rod rotates with the cylinder body and slides circumferentially relative to the inner rod. Under the cooperation of the transmission buckle and the transmission groove, the sleeve rod makes an up and down reciprocating motion, thereby driving the first piston plate to make a piston motion inside the cylinder body; when the first piston plate moves upward, the one-way valve inside the stirring rod is connected, and the one-way valves inside the shunt pipe are blocked, so the cylinder body draws liquid toward the lower end of the stirring rod; and when the first piston plate moves downward, the one-way valve inside the stirring rod is blocked, and the one-way valves inside the shunt pipe are connected, so the cylinder body squeezes the liquid into the shunt pipe, and there is a small gap between the shunt pipe and the inner wall of the mixing tank, and the squeezed liquid can flow downward along the inside of the mixing tank. During the process, the liquid is in a thinner state, and bubbles are more likely to precipitate.

[0017] A further improvement of the technical solution of the present invention is that: one end of the diversion pipe away from the hollow shaft is fixedly connected to a mounting frame, a pressure roller is rotatably connected to the inner side of the mounting frame, the pressure roller contacts the inner wall of the mixing tank, and a plurality of scrapers are fixedly connected to the outer side of the central axis of the stirring rod, and the scrapers contact the inner wall of the mixing tank.

[0018] By adopting the above technical solution, in the process of the mixed liquid flowing downward along the inner wall of the mixing tank, the pressure roller will crush the mixture, break and squeeze out the bubbles in the mixture, thereby further eliminating the bubbles in the mixture. In addition, as the stirring rod rotates, it will also drive the scraper to scrape the inner wall of the mixing tank, thereby scraping the crushed mixture on the inner wall of the mixing tank downward.

[0019] A further improvement of the technical solution of the present invention is that: a fixing frame is fixedly connected between the inner walls of the mixing tank, a valve body is fixedly connected to the top of the fixing frame, a valve core is rotatably connected between the inner walls of the valve body, an output pipe is arranged on the top of the valve body, a rotating joint is arranged between the top of the output pipe and the bottom of the central axis of the stirring rod, and the central axis of the stirring rod and the output pipe are communicated through the rotating joint; two input pipes are symmetrically arranged on the outside of the valve body, the input pipe and the output pipe are perpendicular to each other, two valve holes are provided on the valve core, a feeding hopper is fixedly connected to one side of the mixing tank, one of the input pipes is connected to the bottom of the feeding hopper through a pipeline, and a suction nozzle is fixedly connected to the end of the other input pipe away from the valve body; an electric actuator is fixedly connected to one side of the mixing tank, and one end of the central axis of the valve core extends to the outside of the mixing tank and is fixedly connected to the output end of the electric actuator.

[0020] By adopting the above technical scheme, when adding ethanol, ethanol is added to the feeding hopper, and the electric actuator is controlled to rotate the valve core, so that the output pipe is connected to the feeding hopper through the valve hole and one of the input pipes. At this time, the ethanol inside the feeding hopper is extracted simultaneously with the rotation of the stirring rod, and the ethanol flows downward along the inner wall of the mixing tank. The addition movement is small and relatively smooth, so many bubbles will not be generated during the addition of ethanol, and the mixing tank is always kept in a closed environment during the addition process, thereby reducing the loss of ethanol.

[0021] A further improvement of the technical solution of the present invention is that the rotary joint includes a rotating part and a fixed part, the fixed part is fixedly connected to the output pipe, the rotating part is fixedly connected to the stirring rod, one side of the fixed part is fixedly connected to multiple mounting pins, the outer side of the mounting pin is rotatably connected to a lever through a torsion spring, one side of the lever is fixedly connected to a shaking plate, a side of the fixed part close to the mounting pin is fixedly connected to multiple limit pins used in conjunction with the lever, and the outer side of the rotating part is fixedly connected to a shift block.

[0022] By adopting the above technical solution, during the rotation of the stirring rod, the rotating part rotates relative to the fixed part, so that the toggle block periodically toggles each toggle rod. During the toggle process, the toggle rod rotates relative to the mounting pin, and at the same time the torsion spring accumulates potential energy. When the toggle block is disengaged from the toggle rod, the toggle rod is reset under the rebound action of the torsion spring, driving the shaking plate to reset. The shaking plate is made of a tough thin plate material, and will vibrate at a high frequency during the above action process, thereby assisting the precipitation of bubbles.

[0023] A further improvement of the technical solution of the present invention is that a cover plate is slidably connected between the inner walls of the hopper, a handle is fixedly connected to the top of the cover plate, a valve is arranged on the cover plate, a plurality of strip grooves are opened on the inner wall of the hopper, the mouth of the hopper is arranged with rounded corners, a conducting hole is opened at the bottom end of the inner side wall of the hopper, and a pad is fixedly connected to the bottom of the inner wall of the hopper.

[0024] By adopting the above technical solution, the cover plate is slid upward until it is taken out, and the solvent, combustion aid, enhancer and ethanol are poured into the feeding hopper in sequence. After adding, the cover plate is placed in the feeding hopper, and the cover plate moves downward until it slides below the strip groove. At this time, the cover plate is hindered by the air pressure inside the feeding hopper and cannot continue to move downward, but at this time, the ethanol cannot evaporate outward, and is sucked into the mixing tank along with the ethanol. The cover plate moves downward until it contacts the pad. At this time, the upper and lower parts of the cover plate in the feeding hopper are connected through the conducting hole, so it will not affect the suction of residual ethanol, and at the same time, the mixing will not be hindered by the air pressure.

[0025] A further improvement of the technical solution of the present invention is that: a pressure-stabilizing cylinder is fixedly connected to the top of the inner wall of the mixing tank, a second piston plate is slidably connected between the inner walls of the pressure-stabilizing cylinder, and the top of the pressure-stabilizing cylinder extends to the top of the mixing tank; a pressure relief pipe is provided at the top of the mixing tank, and an electric valve is installed on the pressure relief pipe.

[0026] By adopting the above technical solution, a pressure stabilizing cylinder is set up. During the ethanol injection process, the second piston plate is pushed upward under the action of the air pressure inside the mixing tank, so that the internal pressure of the mixing tank remains unchanged, and the injection of ethanol is not hindered, while the evaporation and escape of ethanol is reduced.

[0027] A further improvement of the technical solution of the present invention is that an electromagnet is fixedly connected to the bottom of the pressure stabilizing cylinder, and an iron ring is fixedly connected to the bottom of the second piston plate.

[0028] By adopting the above technical solution, after ethanol is injected, the second piston plate moves upward, and the internal space of the mixing tank increases relatively. In this process, the electromagnet is controlled to work and adsorb the iron ring, so that the second piston plate moves downward, increasing the internal pressure of the mixing tank, which can reduce the gaseous ethanol in the mixing tank, thereby improving the mixing effect.

[0029] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0030] 1. The present invention uses isopropyl alcohol and acetone as denaturants to denature ethanol gasoline. Since both isopropyl alcohol and acetone are volatile organic compounds, they can form a more uniform mixture with ethanol gasoline, which helps to improve combustion efficiency. Moreover, both isopropyl alcohol and acetone contain oxygen elements, which can increase the oxygen content of the fuel during the combustion process, making the combustion more complete, thereby reducing the emission of carbon monoxide and unburned hydrocarbons.

[0031] 2. The present invention adopts a mechanical method to assist in removing bubbles during the mixing process, so that the bubbles in the mixed liquid can be reduced before the defoaming agent is added, and the use of the defoaming agent can be reduced. During the rotation of the stirring rod, the cylinder body can be driven to continuously extract the mixed liquid from the inside of the mixing tank and discharge it to the inner wall of the mixing tank, so that the mixed liquid can flow downward in a thinner state, thereby reducing the bubble content in the mixed liquid. At the same time, a pressure roller is provided to roll the liquid flowing on the inner wall of the mixing tank, so that the bubbles in the mixture are crushed and squeezed out, thereby further eliminating the bubbles in the mixture.

[0032] 3. The present invention provides a feeding hopper that can be connected to the input pipe. When adding ethanol, ethanol can be added in the same way as the mixed liquid, so that during the ethanol injection process, it can also slowly slide down along the inner wall of the mixing tank to mix with gasoline, thereby reducing the generation of bubbles. At the same time, the interior of the mixing tank can still be kept closed in this way. By providing a cover plate inside the feeding hopper, the cover plate is placed in the feeding hopper after adding alcohol and additives, so that ethanol cannot evaporate outward, thereby reducing the loss of ethanol during the feeding process and improving the preparation effect.

[0033] 4. The present invention sets a shaking plate. During the rotation of the stirring rod, the rotating part rotates relative to the fixed part, so that the toggle block periodically toggles each toggle rod. During the toggle process, the toggle rod rotates relative to the mounting pin. At the same time, the torsion spring accumulates potential energy. When the toggle block is disengaged from the toggle rod, the toggle rod is reset under the rebound action of the torsion spring, driving the shaking plate to reset. The shaking plate is made of a thin plate with toughness, and it will shake at a high frequency during the above action process, thereby assisting the precipitation of bubbles.

[0034] 5. The present invention provides a pressure stabilizing cylinder. During the ethanol injection process, the second piston plate is pushed upward by the air pressure inside the mixing tank, thereby keeping the internal pressure of the mixing tank unchanged and not hindering the injection of ethanol, while reducing the evaporation and escape of ethanol. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 It is a schematic diagram of the structure of the present invention from the first viewing angle as a whole;

[0037] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the whole invention;

[0038] Figure 3 This is one of the cross-sectional structural schematic diagrams of the mixing tank of the present invention;

[0039] Figure 4 The second schematic diagram of the cross-sectional structure of the mixing tank of the present invention;

[0040] Figure 5 It is a schematic diagram of the split structure of the sleeve rod and the inner rod of the present invention;

[0041] Figure 6 It is a schematic diagram of the cross-sectional structure of the valve body of the present invention;

[0042] Figure 7 It is a partial cross-sectional structural schematic diagram of the mixing tank of the present invention;

[0043] Figure 8 It is a schematic cross-sectional view of the charging hopper of the present invention;

[0044] Fig. 9 It is an enlarged view of point A in the figure of the present invention;

[0045] Fig.10 It is an enlarged view of point B in the figure of the present invention;

[0046] Fig.11 It is an enlarged view of point C in the figure of the present invention.

[0047] In the figure: 1, mixing tank; 2, pressure relief pipe; 3, hopper; 4, motor; 5, cylinder; 6, driving gear; 7, hollow shaft; 8, driven gear; 10, first piston plate; 11, inner rod; 12, sleeve rod; 13, transmission groove; 14, transmission buckle; 15, fixed cylinder; 16, stirring rod; 17, diverter pipe; 18, mounting frame; 19, pressure roller; 20, scraper; 21, fixed frame; 22, valve body; 23 , input pipe; 24, valve core; 25, electric actuator; 26, valve hole; 27, rotating part; 28, fixed part; 29, mounting pin; 30, lever; 31, limit pin; 32, shaking plate; 33, toggle block; 34, cover plate; 35, handle; 36, valve; 37, strip groove; 38, conducting hole; 39, gasket; 40, pressure-stabilizing cylinder; 41, electromagnet; 42, second piston plate; 43, iron ring. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with embodiments:

[0049] Example 1

[0050] The invention provides a preparation process of denatured ethanol gasoline, which comprises gasoline, ethanol, an enhancer, a defoamer, a solubilizer and a combustion aid, and also comprises a denaturant, wherein the volume percentage of each component is as follows: the volume percentage of gasoline is 85% to 90%, the volume percentage of ethanol is 10% to 15%, the volume percentage of the defoamer is 0.1% to 0.5%, the volume percentage of the solubilizer is 0% to 0.5%, the volume percentage of the combustion aid is 0% to 0.3%, and the volume percentage of the denaturant is 1.5% to 3% of the volume of the ethanol, and the process comprises the following steps:

[0051] S1: Select a suitable denaturant and determine the proportion of each component of the denaturant. The denaturant includes 60% to 70% isopropanol and 30% to 40% acetone;

[0052] In the process, isopropyl alcohol and acetone are used as denaturants to denature ethanol gasoline. Since both isopropyl alcohol and acetone are volatile organic compounds, they can form a more uniform mixture with ethanol gasoline, which helps to improve combustion efficiency. Moreover, both isopropyl alcohol and acetone contain oxygen, which can increase the oxygen content of the fuel during combustion, making the combustion more complete, thereby reducing the emission of carbon monoxide and unburned hydrocarbons. Ethanol is hygroscopic and easily absorbs moisture in the air, causing stratification of ethanol gasoline. The addition of isopropyl alcohol and acetone can improve the compatibility of ethanol and gasoline, reduce the risk of stratification, and improve the stability of the fuel. Based on the improved water absorption of ethanol gasoline after stratification, the moisture in ethanol fuel can easily cause corrosion of metal parts, and the addition of isopropyl alcohol and acetone can alleviate the corrosiveness of ethanol to a certain extent, extending the service life of the engine and oil system. In addition, acetone, as a low-boiling point compound, can maintain good fluidity and stability in a low-temperature environment, avoiding the precipitation or solidification of the fuel at low temperatures. Tert-butyl alcohol is used as an enhancer, mainly used to improve the octane number and combustion performance of ethanol gasoline.

[0053] S2: Take appropriate amounts of ethanol, gasoline, solvent, combustion aid and enhancer according to the above ratio, add 90% of the gasoline into the mixing tank 1, then mix the taken ethanol, solvent, combustion aid and enhancer and add them into the mixing tank 1 for premixing, the mixing temperature is 15-25°C, the mixing time is 25-30 minutes, and the mixing environment is kept closed;

[0054] Due to the volatility of ethanol, the evaporation of ethanol during the mixing process of ethanol and gasoline will reduce the amount of ethanol. The evaporation of ethanol is affected by temperature and pressure. The lower the temperature, the less ethanol evaporates. In the above process, ethanol and gasoline are pre-mixed in a closed environment. During this process, the mixing environment is kept closed and the mixing temperature is 20°C, aiming to fully mix ethanol and gasoline while reducing the evaporation of ethanol.

[0055] S3: Take the denaturant and defoamer according to the above ratio, mix with the remaining 10% of gasoline taken in step S2, and add to the mixing tank 1, slowly stir for 30 minutes, the mixing temperature is 25-35°C, and ensure that the denaturant is evenly distributed in the mixture;

[0056] Since the volume proportion of the defoamer and the denaturant is relatively small, the gasoline is divided into two parts for addition. The second part is used to mix the defoamer and the denaturant and then put into the mixing tank 1 together to reduce the error caused by the solvent adhering to the pipe wall or other parts. After the subsequent additives are added, stir slowly for 30 minutes to ensure that the denaturant is evenly distributed in the mixture. Since ethanol and gasoline have been fully mixed in this process, the stirring temperature can be appropriately increased to 30°C. At this temperature, the fluidity of ethanol and gasoline is improved, thereby further improving the mixing effect.

[0057] S4: Continue stirring at a low speed of 50 to 100 rpm for 60 minutes to fully mix the ethanol, gasoline and denaturant to achieve a uniform and stable state, thereby obtaining denatured ethanol gasoline.

[0058] Example 2

[0059] like Figure 1 , Figure 3 and Figure 4 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, the top of the inner wall of the mixing tank 1 is rotatably connected with a hollow shaft 7, the top of the hollow shaft 7 extends to the top of the mixing tank 1, the bottom of the hollow shaft 7 is fixedly connected with a cylinder body 5, the bottom of the cylinder body 5 is fixedly connected with a stirring rod 16, the top of the mixing tank 1 is fixedly installed with a motor 4, the output end of the motor 4 extends to the inside of the mixing tank 1 and is fixedly connected with a driving gear 6, the outside of the hollow shaft 7 is fixedly connected with a driven gear 8, and the driven gear 8 is meshed with the driving gear 6; the stirring rod 16 is set to a spiral ribbon structure, the central axis of the stirring rod 16 is a hollow structure, the inside of the central axis of the stirring rod 16 is connected to the cylinder body 5, and a one-way valve is installed, and the outside of the hollow shaft 7 is close to A plurality of shunt pipes 17 are fixedly connected to the top portion, and a one-way valve is installed inside the shunt pipes 17, and the shunt pipes 17 are inclined. A fixed cylinder 15 is fixedly connected to the top of the mixing tank 1, and an inner rod 11 is fixedly connected to the top of the inner wall of the fixed cylinder 15. A first piston plate 10 is slidably connected between the inner walls of the cylinder body 5, and a sleeve rod 12 is slidably connected to the top of the cylinder body 5. The bottom end of the sleeve rod 12 extends to the inside of the cylinder body 5 and is fixedly connected to the first piston plate 10. A transmission buckle 14 is fixedly connected to the inner wall of the sleeve rod 12, and the bottom end of the inner rod 11 extends to the inside of the sleeve rod 12. A spiral transmission groove 13 is provided on the outside of the inner rod 11, and the transmission buckle 14 is slidably connected to the transmission groove 13. The temperature of the mixing tank 1 is controlled by an external high and low temperature integrated circulation machine.

[0060] In the process of mixing ethanol and gasoline, bubbles are inevitably generated in the mixed liquid along with the stirring of the stirring rod 16. When these bubbles appear in the ethanol gasoline fuel, they will not only affect the combustion effect, but also produce a deflagration phenomenon during the combustion process. However, there are still certain limitations in simply relying on defoamers to eliminate bubbles. Although defoamers can effectively reduce the surface tension of liquids, when using defoamers, additional ingredients such as carriers and emulsifiers are usually added, which may cause troubles in the later product purification and pollutant treatment. In order to achieve an ideal defoaming effect, a large amount of defoamers may need to be used, which not only increases the production cost, but also the use of too much defoamer will affect the purity of ethanol gasoline, thereby generating residues during the combustion process.

[0061] In this embodiment, a mechanical method is used to assist in removing bubbles during the mixing process, so that bubbles in the mixed liquid can be reduced before adding the defoaming agent, and the use of the defoaming agent can be reduced. Specifically, during the rotation of the stirring rod 16, on the one hand, the interior of the mixing tank 1 can be stirred, and on the other hand, the sleeve rod 12 rotates with the cylinder body 5 and slides in the circumferential direction relative to the inner rod 11. Under the cooperation of the transmission buckle 14 and the transmission groove 13, the sleeve rod 12 makes an up and down reciprocating motion, thereby driving the first piston plate 10 to make a piston motion inside the cylinder body 5; when the first piston plate 10 moves upward, the one-way valve inside the stirring rod 16 is turned on, and the shunt pipe 17 is turned on. The internal one-way valves are all blocked, so the cylinder body 5 will draw liquid to the lower end of the stirring rod 16; and when the first piston plate 10 moves downward, the internal one-way valve of the stirring rod 16 is blocked, and the internal one-way valves of the diverter pipe 17 are all connected, so the cylinder body 5 will squeeze the liquid into the diverter pipe 17. There is a small gap between the diverter pipe 17 and the inner wall of the mixing tank 1, and the squeezed liquid can flow downward along the inside of the mixing tank 1. During the process, the liquid is in a thinner state and bubbles are more likely to precipitate. In addition, due to the different densities of ethanol and gasoline, the two tend to be distributed in layers in the longitudinal direction, so the stirring rod 16 selects a spiral ribbon structure to allow the two raw materials to tumble up and down, thereby improving the mixing effect.

[0062] like Figure 4 , Figure 7 and Fig.10 As shown, preferably, one end of the shunt pipe 17 away from the hollow shaft 7 is fixedly connected to a mounting frame 18, a pressure roller 19 is rotatably connected to the inner side of the mounting frame 18, the pressure roller 19 is in contact with the inner wall of the mixing tank 1, and a plurality of scrapers 20 are fixedly connected to the outer side of the central axis of the stirring rod 16, the scrapers 20 are in contact with the inner wall of the mixing tank 1.

[0063] In this embodiment, during the process of the mixed liquid flowing downward along the inner wall of the mixing tank 1, the pressure roller 19 will crush the mixed material, thereby breaking and squeezing out the bubbles in the mixed material, thereby further eliminating the bubbles in the mixed material. In addition, as the stirring rod 16 rotates, the scraper 20 will also be driven to scrape the inner wall of the mixing tank 1, thereby scraping the crushed mixed material on the inner wall of the mixing tank 1 downward.

[0064] Example 3

[0065] like Figure 3 , Figure 4 and Figure 6As shown, on the basis of Example 2, the present invention provides a technical solution: preferably, a fixing frame 21 is fixedly connected between the inner walls of the mixing tank 1, a valve body 22 is fixedly connected to the top of the fixing frame 21, a valve core 24 is rotatably connected between the inner walls of the valve body 22, an output pipe is arranged on the top of the valve body 22, a rotary joint is arranged between the top of the output pipe and the bottom of the central axis of the stirring rod 16, and the central axis of the stirring rod 16 and the output pipe are communicated through the rotary joint; two input pipes 23 are symmetrically arranged on the outer side of the valve body 22, the input pipe 23 and the output pipe are perpendicular to each other, and two valve holes 26 are provided on the valve core 24, a feeding hopper 3 is fixedly connected to one side of the mixing tank 1, one of the input pipes 23 is communicated with the bottom of the feeding hopper 3 through a pipeline, and a suction nozzle is fixedly connected to one end of the other input pipe 23 away from the valve body 22; an electric actuator 25 is fixedly connected to one side of the mixing tank 1, and one end of the central axis of the valve core 24 extends to the outside of the mixing tank 1 and is fixedly connected to the output end of the electric actuator 25.

[0066] Ethanol itself has the characteristic of evaporation, so the environment needs to be closed when adding materials, otherwise the ethanol will be reduced due to evaporation. In addition, if the ethanol moves too much during the addition process, bubbles will be generated, thereby increasing the workload of subsequent defoaming.

[0067] In this embodiment, when adding ethanol, ethanol is added to the feeding hopper 3, and the electric actuator 25 is controlled to work to rotate the valve core 24, so that the output pipe is connected to the feeding hopper 3 through the valve hole 26 and one of the input pipes 23. At this time, along with the rotation of the stirring rod 16, the ethanol inside the feeding hopper 3 will be extracted at the same time, and the ethanol will flow downward along the inner wall of the mixing tank 1. The addition movement is small and relatively smooth. Therefore, not many bubbles will be generated during the addition of ethanol, and the mixing tank 1 will always maintain a closed environment during the addition process, thereby reducing the loss of ethanol.

[0068] Example 4

[0069] like Figure 3 , Figure 6 and Fig.11 As shown, on the basis of Example 3, the present invention provides a technical solution: preferably, the rotary joint includes a rotating part 27 and a fixed part 28, the fixed part 28 is fixedly connected to the output pipe, the rotating part 27 is fixedly connected to the stirring rod 16, a plurality of mounting pins 29 are fixedly connected to one side of the fixed part 28, a lever 30 is rotatably connected to the outer side of the mounting pin 29 through a torsion spring, a shaking plate 32 is fixedly connected to one side of the lever 30, a plurality of limit pins 31 used in conjunction with the lever 30 are fixedly connected to the side of the fixed part 28 close to the mounting pin 29, and a toggle block 33 is fixedly connected to the outer side of the rotating part 27.

[0070] In this embodiment, during the rotation of the stirring rod 16, the rotating part 27 rotates relative to the fixed part 28, so that the toggle block 33 periodically toggles each toggle rod 30. During the toggle process, the toggle rod 30 rotates relative to the mounting pin 29, and the torsion spring accumulates potential energy. When the toggle block 33 is disengaged from the toggle rod 30, the toggle rod 30 is reset under the rebound action of the torsion spring, driving the shaking plate 32 to reset. The shaking plate 32 is made of a thin plate with toughness. During the above action, it will shake at a high frequency, thereby assisting the precipitation of bubbles. At the same time, the above shaking can also improve the mixing effect.

[0071] like Figure 2 and Figure 8 As shown, preferably, a cover plate 34 is slidably connected between the inner walls of the hopper 3, a handle 35 is fixedly connected to the top of the cover plate 34, a valve 36 is provided on the cover plate 34, a plurality of strip grooves 37 are provided on the inner wall of the hopper 3, the mouth of the hopper 3 is set as a rounded corner, a conducting hole 38 is provided at the bottom end of the inner wall of the hopper 3, and a pad 39 is fixedly connected to the bottom of the inner wall of the hopper 3.

[0072] After ethanol is added to the hopper 3, it is slowly sucked into the mixing tank 1. During this process, part of the ethanol in the hopper 3 will evaporate, which will cause ethanol loss and affect the proportion of ethanol.

[0073] In this embodiment, the cover plate 34 is slid upward until it is taken out, and the solvent, combustion aid, enhancer and ethanol are poured into the feeding hopper 3 in sequence. After adding, the cover plate 34 is placed in the feeding hopper 3, and the cover plate 34 moves downward until it slides below the strip groove 37. At this time, the cover plate 34 is hindered by the air pressure inside the feeding hopper 3 and cannot continue to move downward, but at this time, the ethanol cannot evaporate outward, and is sucked into the mixing tank 1 along with the ethanol. The cover plate 34 moves downward until it contacts the pad 39. At this time, the upper and lower parts of the cover plate 34 in the feeding hopper 3 are connected through the conducting hole 38, so it will not affect the suction of residual ethanol, and the mixing will not be hindered by the air pressure;

[0074] Furthermore, the valve 36 needs to be opened when the cover plate 34 is taken out, and closed when the cover plate 34 is put on.

[0075] like Figure 4 and Figure 7 As shown, preferably, a pressure-stabilizing cylinder 40 is fixedly connected to the top of the inner wall of the mixing tank 1, a second piston plate 42 is slidably connected between the inner walls of the pressure-stabilizing cylinder 40, and the top of the pressure-stabilizing cylinder 40 extends to the top of the mixing tank 1; a pressure relief pipe 2 is provided on the top of the mixing tank 1, an electric valve 36 is installed on the pressure relief pipe 2, and a pressure sensor is installed inside the mixing tank 1. When the pressure in the mixing tank 1 is abnormal, the pressure sensor transmits a signal to an external controller, thereby controlling the electric valve 36 to open for pressure relief.

[0076] During the process of ethanol being sucked into the mixing tank 1, in order to reduce ethanol loss, the mixing tank 1 is in a closed state, so the ethanol injection process will be hindered by the internal air pressure of the mixing tank 1;

[0077] In this embodiment, by providing a pressure stabilizing cylinder 40, during the ethanol injection process, the second piston plate 42 is pushed upward by the internal air pressure of the mixing tank 1, so that the internal pressure of the mixing tank 1 remains unchanged, and the injection of ethanol is not hindered, while the evaporation and escape of ethanol is reduced.

[0078] like Figure 4 and Figure 7 As shown, preferably, an electromagnet 41 is fixedly connected to the bottom of the pressure stabilizing cylinder 40 , and an iron ring 43 is fixedly connected to the bottom of the second piston plate 42 .

[0079] In this embodiment, after ethanol is injected, the second piston plate 42 moves upward, and the internal space of the mixing tank 1 increases relatively. In this process, the electromagnet 41 is controlled to work and the iron ring 43 is adsorbed, so that the second piston plate 42 moves downward, and the internal pressure of the mixing tank 1 increases, which can reduce the gaseous ethanol in the mixing tank 1, thereby improving the mixing effect.

[0080] The working principle of the preparation process of the denatured ethanol gasoline is described in detail below.

[0081] like Figure 1 - Fig.11 As shown, when the electric valve 36 on the pressure relief pipe 2 is open, a certain amount of gasoline (90% of the amount taken) is injected through the filling pipe on the top of the mixing tank 1. During the injection process, the air pressure in the tank is released by the pressure relief pipe 2, and after the gasoline injection is completed, the valves 36 on the filling pipe and the pressure relief pipe 2 are closed; the cover plate 34 is slid upward until it is taken out, and the solvent, combustion aid, enhancer and ethanol (referred to as mixed liquid a) are poured into the feeding hopper 3 in sequence. After adding, the cover plate 34 is placed in the feeding hopper 3, and the cover plate 34 moves downward until it slides below the strip groove 37. At this time, the cover plate 34 is hindered by the internal air pressure of the feeding hopper 3 and cannot continue to move downward, but at this time, the ethanol cannot evaporate outward.

[0082] The motor 4 is controlled to work, so that the driving gear 6 rotates, and the driven gear 8 rotates through meshing, so that the hollow shaft 7, the cylinder body 5 and the stirring rod 16 rotate accordingly, so as to stir the inside of the mixing tank 1; during the above operation, the sleeve rod 12 rotates with the cylinder body 5, and slides in the circumferential direction relative to the inner rod 11. During the process, the transmission buckle 14 squeezes the transmission groove 13. Since the inner rod 11 is fixedly connected to the fixed cylinder 15, the sleeve rod 12 will move axially relative to the inner rod 11 during the sliding process of the transmission buckle 14 relative to the transmission groove 13. The transmission groove 13 is a closed-loop groove composed of two symmetrical semi-spiral grooves. After the above transmission, During the rotation of the stirring rod 16, the sleeve rod 12 reciprocates up and down at the same time, thereby driving the first piston plate 10 to perform piston movement inside the cylinder body 5; when the first piston plate 10 moves upward, the one-way valve inside the stirring rod 16 is connected, and the one-way valves inside the diverter pipe 17 are blocked, so the cylinder body 5 will draw liquid to the lower end of the stirring rod 16; and when the first piston plate 10 moves downward, the one-way valve inside the stirring rod 16 is blocked, and the one-way valves inside the diverter pipe 17 are connected, so the cylinder body 5 will squeeze the liquid into the diverter pipe 17, and there is a small gap between the diverter pipe 17 and the inner wall of the mixing tank 1, and the squeezed liquid can flow downward along the inside of the mixing tank 1.

[0083] The electric actuator 25 is controlled to work and the valve core 24 is rotated, so that the output pipe is connected with the feeding hopper 3 through the valve hole 26 and one of the input pipes 23. At this time, along with the rotation of the stirring rod 16, the ethanol inside the feeding hopper 3 will be extracted at the same time, and the ethanol will flow downward along the inner wall of the mixing tank 1. The feeding movement is small and relatively smooth, so not many bubbles will be generated during the ethanol feeding process. After the feeding is completed, the electric actuator 25 is controlled to reset so that the valve hole 26 is opposite to the input pipe 23 in the mixing tank 1.

[0084] After the mixture a is completely sucked into the mixing tank 1, the cover plate 34 will continue to move downward under the action of air pressure until the bottom contacts the cushion block 39. At this time, the feeding hopper 3 is connected to the outside through the conducting hole 38, so the cylinder body 5 will inhale air outward through the feeding hopper 3 in the subsequent process; at this time, the electric actuator 25 is controlled to work, so that the valve core 24 rotates until the input pipe 23 with the suction nozzle is connected to the output pipe through the valve hole 26. At this time, the mixed material in the mixing tank 1 is continuously drawn upward and flows downward along the inner wall as the stirring rod 16 rotates. The mixed material flowing on the inner wall is relatively gathered thinner in the tank, so bubbles are easier to precipitate.

[0085] A plurality of pressure rollers 19 corresponding to the diversion pipe 17 are also provided on the outside of the stirring rod 16. When the mixed liquid flows downward along the inner wall of the mixing tank 1, the pressure rollers 19 will crush the mixed material, thereby breaking and squeezing out the bubbles in the mixed material, thereby further eliminating the bubbles in the mixed material. In addition, as the stirring rod 16 rotates, the scraper 20 will be driven to scrape the inner wall of the mixing tank 1, thereby scraping the crushed mixed material on the inner wall of the mixing tank 1 downward.

[0086] After gasoline and the above mixture a are fully mixed to obtain mixture b, and the remaining 10% of gasoline, denaturant and defoamer (mixture c) are added to the feeding hopper 3 in the same way as the above mixture a and sucked into the mixing tank 1. Since the volume proportion of the defoamer and the denaturant is relatively small, the gasoline is divided into two parts for addition, and the second part is used to mix the defoamer and the denaturant and then added to the mixing tank 1 together to reduce the error caused by the solvent adhering to the pipe wall or other parts. After the subsequent additives are added, slowly stir for 30 minutes to ensure that the denaturant is evenly distributed in the mixture; and continue to stir at a low speed of 50 to 100 rpm for 60 minutes to fully mix the ethanol, gasoline and denaturant to achieve a uniform and stable state, namely, to obtain denatured ethanol gasoline.

[0087] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A process for preparing denatured ethanol gasoline, the denatured ethanol gasoline comprising: Gasoline, ethanol, enhancer, defoamer, solubilizer and combustion aid, characterized in that it also includes a denaturant, and the volume percentage of each component is: gasoline ratio is 85% to 90%, ethanol ratio is 10% to 15%, defoamer ratio is 0.1% to 0.5%, solubilizer ratio is 0% to 0.5%, combustion aid ratio is 0% to 0.3%, and denaturant ratio is 1.5% to 3% of the volume of ethanol, comprising the following steps: S1: Select a suitable denaturant and determine the proportion of each component of the denaturant, wherein the denaturant includes 60% to 70% isopropanol and 30% to 40% acetone; S2: taking appropriate amounts of ethanol, gasoline, co-solvent, combustion aid and enhancer according to the above ratio, adding 90% of the taken amount of gasoline into the mixing tank (1), then mixing the taken ethanol, co-solvent, combustion aid and enhancer and adding them into the mixing tank (1) for pre-mixing, the mixing temperature is 15-25° C., the mixing time is 25-30 minutes, and the mixing environment is kept closed; S3: taking the denaturant and defoamer according to the above ratio, mixing them with the remaining 10% of the gasoline taken in step S2, and adding them to the mixing tank (1), stirring slowly for 30 minutes at a mixing temperature of 25 to 35° C. to ensure that the denaturant is evenly distributed in the mixture; S4: Continue stirring at a low speed of 50 to 100 rpm for 60 minutes to fully mix the ethanol, gasoline and denaturant to achieve a uniform and stable state, thereby obtaining the denatured ethanol gasoline.

2. A process for preparing denatured ethanol gasoline according to claim 1, characterized in that: A hollow shaft (7) is rotatably connected to the top of the inner wall of the mixing tank (1), the top of the hollow shaft (7) extends to the top of the mixing tank (1), the bottom of the hollow shaft (7) is fixedly connected to a cylinder body (5), the bottom of the cylinder body (5) is fixedly connected to a stirring rod (16), a motor (4) is fixedly installed on the top of the mixing tank (1), the output end of the motor (4) extends to the inside of the mixing tank (1) and is fixedly connected to a driving gear (6), the outer side of the hollow shaft (7) is fixedly connected to a driven gear (8), and the driven gear (8) is meshingly connected to the driving gear (6); The stirring rod (16) is configured as a spiral ribbon structure, the central axis of the stirring rod (16) is a hollow structure, the interior of the central axis of the stirring rod (16) is connected to the cylinder body (5) and is equipped with a one-way valve, a plurality of shunt pipes (17) are fixedly connected to the outer side of the hollow shaft (7) near the top, each shunt pipe (17) is equipped with a one-way valve, and the shunt pipe (17) is arranged in an inclined manner; the top of the mixing tank (1) is fixedly connected to a fixed cylinder (15), the top of the inner wall of the fixed cylinder (15) is fixedly connected to an inner rod (11), and the cylinder body (5) is fixedly connected to the inner wall of the fixed cylinder (15). A first piston plate (10) is slidably connected between the inner walls, a sleeve rod (12) is slidably connected to the top of the cylinder body (5), the bottom end of the sleeve rod (12) extends to the inside of the cylinder body (5) and is fixedly connected to the first piston plate (10), a transmission buckle (14) is fixedly connected to the inner wall of the sleeve rod (12), the bottom end of the inner rod (11) extends to the inside of the sleeve rod (12), a spiral transmission groove (13) is provided on the outer side of the inner rod (11), and the transmission buckle (14) is slidably connected to the transmission groove (13); the temperature of the mixing tank (1) is controlled by an external high and low temperature integrated circulation machine.

3. A process for preparing denatured ethanol gasoline according to claim 2, characterized in that: The end of the diverter pipe (17) away from the hollow shaft (7) is fixedly connected to a mounting frame (18), and a pressure roller (19) is rotatably connected to the inner side of the mounting frame (18), and the pressure roller (19) is in contact with the inner wall of the mixing tank (1). The outer side of the central axis of the stirring rod (16) is fixedly connected to a plurality of scrapers (20), and the scrapers (20) are in contact with the inner wall of the mixing tank (1).

4. A process for preparing denatured ethanol gasoline according to claim 3, characterized in that: A fixing frame (21) is fixedly connected between the inner walls of the mixing tank (1), a valve body (22) is fixedly connected to the top of the fixing frame (21), a valve core (24) is rotatably connected between the inner walls of the valve body (22), an output pipe is arranged at the top of the valve body (22), a rotary joint is arranged between the top of the output pipe and the bottom of the central axis of the stirring rod (16), and the central axis of the stirring rod (16) and the output pipe are communicated through the rotary joint; two input pipes (23) are symmetrically arranged on the outer side of the valve body (22), and the input pipes (23) are connected to the bottom of the central axis of the stirring rod (16). The valve core (24) is perpendicular to the output pipe, and two valve holes (26) are provided on the valve core (24). A feeding hopper (3) is fixedly connected to one side of the mixing tank (1), one of the input pipes (23) is connected to the bottom of the feeding hopper (3) through a pipeline, and a suction nozzle is fixedly connected to the other end of the input pipe (23) away from the valve body (22); an electric actuator (25) is fixedly connected to one side of the mixing tank (1), and one end of the central axis of the valve core (24) extends to the outside of the mixing tank (1) and is fixedly connected to the output end of the electric actuator (25).

5. A process for preparing denatured ethanol gasoline according to claim 4, characterized in that: The rotary joint comprises a rotating part (27) and a fixed part (28), wherein the fixed part (28) is fixedly connected to the output pipe, and the rotating part (27) is fixedly connected to the stirring rod (16); a plurality of mounting pins (29) are fixedly connected to one side of the fixed part (28); a lever (30) is rotatably connected to the outer side of the mounting pin (29) via a torsion spring; a shaking plate (32) is fixedly connected to one side of the lever (30); a plurality of limit pins (31) used in conjunction with the lever (30) are fixedly connected to one side of the fixed part (28) close to the mounting pin (29); and a toggle block (33) is fixedly connected to the outer side of the rotating part (27).

6. The process for preparing a denatured ethanol gasoline according to claim 5, characterized in that: A cover plate (34) is slidably connected between the inner walls of the feeding hopper (3), a handle (35) is fixedly connected to the top of the cover plate (34), a valve (36) is arranged on the cover plate (34), a plurality of strip grooves (37) are provided on the inner wall of the feeding hopper (3), the mouth of the feeding hopper (3) is arranged with rounded corners, a conducting hole (38) is provided at the bottom end of the inner side wall of the feeding hopper (3), and a cushion block (39) is fixedly connected to the bottom of the inner wall of the feeding hopper (3).

7. The process for preparing denatured ethanol gasoline according to claim 6, characterized in that: A pressure stabilizing cylinder (40) is fixedly connected to the top of the inner wall of the mixing tank (1), a second piston plate (42) is slidably connected between the inner walls of the pressure stabilizing cylinder (40), and the top of the pressure stabilizing cylinder (40) extends to the top of the mixing tank (1); a pressure relief pipe (2) is arranged at the top of the mixing tank (1), and an electric valve (36) is installed on the pressure relief pipe (2).

8. The process for preparing a denatured ethanol gasoline according to claim 7, characterized in that: The bottom of the pressure stabilizing cylinder (40) is fixedly connected to an electromagnet (41), and the bottom of the second piston plate (42) is fixedly connected to an iron ring (43).

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