Sticky oil water preparation apparatus and method, and diesel emulsion fuel preparation system and method

Abstract

The present application relates to a kind of oil water preparation device and method, and diesel emulsion fuel preparation system and method, the metering of preparation raw material uses dosing cylinder, realizes the accurate proportioning of raw material with the simplest structure and method;And the mixing structure formed by impact mixer, circulating mixing pump and mixing tank, raw material is always delivered to the bottom of emulsion mixing tank by feed pipe, is extracted by circulating mixing pump before raw material stratification and is further broken into mixed particles after being injected into the air space of mixing tank after mixing by impact mixer, greatly improve the uniformity of emulsion fuel, the emulsion fuel prepared by the present application is completely combusted in engine, engine emission is extremely low, and power is sufficient.

Description

Technical Field

[0001] This invention relates to the field of diesel engine technology, enabling diesel engines to burn both diesel fuel and emulsified oil, and can be applied to various diesel engines and boilers. Background Technology

[0002] Emulsified diesel fuel refers to an emulsion in which diesel fuel is the continuous phase and water is the dispersed phase. The working principle of emulsified diesel fuel in engines is as follows: the emulsified fuel enters the engine cylinder and undergoes secondary atomization, making the fuel droplets finer and allowing for thorough mixing and combustion with oxygen. Existing emulsified fuels generally have the following problems: First, poor uniformity. The performance of DEF fuel depends on its uniformity; poor uniformity can adversely affect engine performance, such as unstable engine speed, high fuel consumption, and potentially reduced DEF water content, which may also lead to higher emissions of NOx, PM, HC, and CO. Second, the ratio of diesel fuel to viscous water (a mixture of surfactants and water) is difficult to control, often resulting in surfactants exceeding the necessary amount. Unlike hydrocarbons, surfactants do not produce water during combustion. Because internal combustion engines are primarily driven by steam expansion rather than heat, excessive surfactants lead to relatively low water content, resulting in less oxygen available for combustion and incomplete combustion. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies of the prior art by proposing a simple structure and method for preparing viscous oil and water, as well as a diesel emulsified fuel preparation system and method for achieving precise proportioning of raw materials.

[0004] The technical solution adopted by this invention to solve its technical problem is as follows:

[0005] A device for preparing viscous oil-water mixture is provided, comprising a surfactant supply tank, a water supply tank, a surfactant dosing cylinder, a water dosing cylinder, a viscous oil-water mixing tank, and a second impact mixer; the inlet of the surfactant dosing cylinder is connected to the surfactant supply tank via a surfactant supply pump, and the outlet of the surfactant dosing cylinder is connected to the water dosing cylinder via a valve; the bottom of the water dosing cylinder is connected to the bottom of the water supply tank via a water supply pump, and the outlet of the water dosing cylinder is connected at least via a valve and to a feed pipe assembly located inside the viscous oil-water mixing tank that can directly feed the material into the lower part of the viscous oil-water mixing tank; the... The second impact mixer includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet. The inlet pipe of the second impact mixer is connected to the bottom of the viscous oil-water mixing tank via a second circulating mixing pump. The nozzle outlets of the second impact mixer and the impact nozzle outlet are respectively located within the air space of the viscous oil-water mixing tank. The capacity ratio of the surfactant dosing cylinder and the water dosing cylinder is equal to the set ratio of surfactant and water in the viscous oil-water to be prepared, and the sum of the capacities of the surfactant dosing cylinder and the water dosing cylinder is less than the capacity of the viscous oil-water mixing tank.

[0006] A method for preparing viscous water is provided, which, based on the above-mentioned viscous water preparation apparatus, involves mixing a surfactant and water to form viscous water, including the following steps:

[0007] A. The surfactant supply pump is turned on to add surfactant from the surfactant supply tank to the surfactant dosing cylinder. When the surfactant dosing cylinder is full, the surfactant supply pump is turned off.

[0008] B. The water supply pump is turned on to add water from the water supply tank to the water dosing cylinder. When the water dosing cylinder is full, the water supply pump is turned off.

[0009] C. Premix the surfactant in the surfactant dosing cylinder and the water in the water dosing cylinder;

[0010] D. The premixed mixture is fed into the lower part of the viscous water mixing tank at least through the feed pipe assembly by a circulating transfer pump;

[0011] E. Under the action of the second circulating mixing pump, the mixing circulation of the viscous oil-water mixing tank is started. The mixture in the viscous oil-water mixing tank flows out from the bottom of the funnel-shaped tank and is mixed by impact inside the second impact mixer. Then it is sprayed into the viscous oil-water mixing tank through the nozzle of the second impact mixer and the impact nozzle.

[0012] F. After a set time, the prepared viscous water in the viscous water mixing tank is discharged through the outlet located at the bottom of the viscous water mixing tank.

[0013] A diesel emulsified fuel preparation system is provided, comprising a diesel supply tank, a viscous water supply tank, and an emulsion mixing tank, further comprising: a viscous water mixing device as described above, connected to the viscous water supply tank for mixing water and a surfactant; and

[0014] A diesel dosing cylinder, the inlet of which is connected to the diesel supply tank via a diesel supply pump, and the outlet of which is connected to a feed pipe assembly located inside the emulsion mixing tank via a valve;

[0015] The viscous water dosing cylinder has its inlet connected to the viscous water supply tank via a viscous water supply pump, and its outlet connected via a valve to a feed pipe assembly located in the lower part of the emulsion mixing tank, which can directly feed the material into the emulsion mixing tank.

[0016] The first impact mixer includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet. The inlet pipe of the first impact mixer is connected to the funnel-shaped bottom of the emulsion mixing tank via a first circulating mixing pump. The liquid column nozzle outlet and the impact nozzle outlet of the first impact mixer are respectively located in the air space of the emulsion mixing tank.

[0017] The capacity ratio of the diesel dosing cylinder and the viscous water dosing cylinder is equal to the set ratio of diesel and viscous water, and the sum of the capacities of the diesel dosing cylinder and the viscous water dosing cylinder is less than the capacity of the emulsion mixing tank.

[0018] A method for preparing diesel emulsified fuel is provided. Based on the above-mentioned diesel emulsified fuel preparation system, a surfactant and water are first mixed to form a viscous water mixture, and then the viscous water mixture is mixed with diesel fuel to form emulsified fuel. The step of mixing the surfactant and water to form the viscous water mixture includes the following steps:

[0019] A. The surfactant supply pump is turned on to add surfactant from the surfactant supply tank to the surfactant dosing cylinder. When the surfactant dosing cylinder is full, the surfactant supply pump is turned off.

[0020] B. The water supply pump is turned on to add water from the water supply tank to the water dosing cylinder. When the water dosing cylinder is full, the water supply pump is turned off.

[0021] C. Premix the surfactant in the surfactant dosing cylinder and the water in the water dosing cylinder;

[0022] D. The premixed mixture is fed into the lower part of the viscous water mixing tank at least through the feed pipe assembly by a circulating transfer pump;

[0023] E. Under the action of the second circulating mixing pump, the mixing circulation of the viscous oil-water mixing tank is started. The mixture in the viscous oil-water mixing tank flows out from the bottom of the funnel-shaped tank and is mixed by impact inside the second impact mixer. Then it is sprayed into the viscous oil-water mixing tank through the nozzle of the second impact mixer and the impact nozzle.

[0024] F. After a set time, the prepared viscous water in the viscous water mixing tank is discharged through the outlet located at the bottom of the viscous water mixing tank during the mixing cycle of step (E).

[0025] The process of mixing viscous water with diesel fuel to form emulsified fuel includes the following steps:

[0026] (1) Turn on the viscous water supply pump and add viscous water from the viscous water supply tank to the viscous water dosing cylinder. When the viscous water dosing cylinder is full, turn off the viscous water supply pump.

[0027] (2) Turn on the diesel supply pump and add diesel fuel from the diesel supply tank to the diesel dosing cylinder. When the diesel dosing cylinder is full, turn off the diesel supply pump.

[0028] (3) Open the outlet valve of the viscous water dosing cylinder, and the viscous water in the viscous water dosing cylinder enters the bottom of the emulsion mixing tank by gravity through the feed pipe assembly;

[0029] (4) After all the viscous water in the viscous water dosing cylinder in step (3) has been fed, open the outlet valve of the diesel dosing cylinder. The diesel from the diesel dosing cylinder enters the bottom of the emulsion mixing tank by gravity through the feed pipe assembly.

[0030] (5) Under the action of the first circulating mixing pump, the mixture in the emulsion mixing tank flows out from the bottom of the funnel-shaped tank of the emulsion mixing tank for circulation, and after being mixed by impact inside the first impact mixer, it is sprayed into the emulsion mixing tank through the liquid column nozzle and impact nozzle of the first impact mixer.

[0031] (6) After a set time of cyclic mixing in step (5), the prepared fuel in the emulsion mixing tank is discharged through the outlet located at the bottom of the emulsion mixing tank.

[0032] Compared with the prior art, the present invention has the following beneficial effects: by using a dosing cylinder, the precise proportion of raw materials can be achieved with a simple structure and method; and through the mixing structure formed by the impact mixer, the circulating mixing pump and the mixing tank, the raw materials are continuously transported to the bottom of the mixing tank through the feed pipe. Before the raw materials are separated into layers, they are extracted by the circulating mixing pump and sent to the impact mixer for mixing, and then injected into the air space of the mixing tank for further crushing and mixing of particles. This cyclic mixing is carried out for a set time, which greatly improves the uniformity of the emulsified fuel. The emulsified fuel prepared by the present invention burns completely in the engine, with extremely low engine emissions and sufficient power. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structural principle of the diesel emulsified fuel preparation system of the present invention;

[0034] Figure 2 This is a schematic diagram illustrating the structural principle of the viscous oil-water mixing device of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of an embodiment of the diesel emulsified fuel preparation system of the present invention;

[0036] Figure 4 This is a schematic diagram of the shape and structure of the mixing tank according to an embodiment of the present invention;

[0037] Figure 5 This is a top view of the mixing tank according to an embodiment of the present invention;

[0038] Figure 6 This is a three-dimensional schematic diagram of the water supply tank according to an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of the feed pipe assembly according to an embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the impact mixer according to an embodiment of the present invention;

[0041] Figure 9 This is a schematic diagram of the dosing cylinder according to an embodiment of the present invention;

[0042] Figure 10 This is a schematic diagram illustrating the principle behind the inaccurate measurement caused by the assumed tilting of the dosing cylinder in this invention.

[0043] Figure 11 This is a schematic diagram of the jetting effect of the liquid jet nozzle according to an embodiment of the present invention;

[0044] Figure 12 This is a schematic diagram of the spraying effect of the impact nozzle in an embodiment of the present invention;

[0045] Figure 13 This is a schematic diagram of the spraying effect of the defoaming nozzle in an embodiment of the present invention.

[0046] Figure Labels

[0047] Detailed Implementation

[0048] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0049] like Figure 1As shown, a diesel emulsified fuel preparation system includes an emulsified fuel mixing module and a viscous oil-water mixing device. The emulsified fuel mixing module further includes a diesel dosage cylinder T1, a viscous oil-water dosage cylinder T2, an emulsion mixing tank T3, a diesel supply tank T4, a viscous oil-water supply tank T5, a first impact mixer M1, a diesel supply pump P1, a viscous oil-water supply pump P2, and a first circulating mixing pump P3. The viscous oil-water mixing device is connected to the viscous oil-water supply tank T5 and is used to mix water with a surfactant.

[0050] The inlet of the diesel dosing cylinder T1 is connected to the diesel supply tank T4 via a diesel supply pump P1, and the outlet of the diesel dosing cylinder T1 is connected to the feed pipe assembly FPA located inside the emulsion mixing tank T3 via a valve. The inlet of the viscous water dosing cylinder T2 is connected to the viscous water supply tank T5 via a viscous water supply pump P2, and the outlet of the viscous water dosing cylinder T2 is connected to the feed pipe assembly FPA via a valve. The first impact mixer M1 includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet. The inlet pipe of the first impact mixer M1 is connected to the funnel-shaped bottom of the emulsion mixing tank T3 via a first circulating mixing pump P3, and the liquid column nozzle outlet and the impact nozzle outlet of the first impact mixer M1 are respectively located at the upper part of the emulsion mixing tank T3. The first impact mixer M1 and the first circulating mixing pump P3 form a fuel mixing loop. In this embodiment, there are two fuel mixing loops, which are respectively located on both sides of the emulsion mixing tank T3.

[0051] In some embodiments, such as Figure 1 As shown, the viscous oil-water mixing device is connected as a module to the viscous oil-water supply tank T5 of the diesel emulsified fuel preparation system. In other embodiments, the viscous oil-water mixing device can also produce viscous oil-water as a standalone device, without being connected to the diesel emulsified fuel preparation system.

[0052] The viscous oil-water mixing device is as follows: Figure 2 As shown, it includes a surfactant supply tank t7, a water supply tank t6, a surfactant dosing cylinder t2, a water dosing cylinder t1, a viscous oil-water mixing tank t3, a second impact mixer M2, a surfactant supply pump P4, a water supply pump P5, and a second circulation mixing pump P6.

[0053] The inlet of the surfactant dosing cylinder t2 is connected to the surfactant supply tank t7 via the surfactant supply pump P4, and the outlet of the surfactant dosing cylinder t2 is connected to the water dosing cylinder t1 via a valve; the bottom of the water dosing cylinder t1 is connected to the bottom of the water supply tank t6 via the water supply pump P5, and the outlet of the water dosing cylinder t1 is connected at least via a valve and to the feed pipe assembly FPA located inside the viscous oil-water mixing tank t3.

[0054] The second impact mixer M2 includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet. The inlet pipe of the second impact mixer M2 is connected to the funnel-shaped bottom of the viscous oil-water mixing tank t3 via a second circulating mixing pump P6. The nozzle outlet and impact nozzle outlet of the second impact mixer M2 are respectively located at the upper part of the viscous oil-water mixing tank t3. The second impact mixer M2 and the second circulating mixing pump P6 form a viscous oil-water mixing loop. In this embodiment, there are two viscous oil-water mixing loops, which are respectively located on both sides of the viscous oil-water mixing tank t3.

[0055] In some embodiments, the viscous oil-water mixing device further includes a third impact mixer M3, which includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet. The inlet pipe of the third impact mixer M3 is connected to the upper part of the water dosing cylinder t1 via a third circulating mixing pump P7. The nozzle outlet and the impact nozzle outlet of the third impact mixer M3 are respectively located at the upper part of the viscous oil-water mixing tank t3.

[0056] In some embodiments, the upper part of the water dosing cylinder t1 has a filter screen t1A, such as a stainless steel filter screen, and the nozzle outlet and impact nozzle outlet of the third impingement mixer M3 are located within the filter screen t1A. The filter screen t1A, the third impingement mixer M3, and the third circulation mixing pump D constitute the upper circulation system of the water dosing cylinder. This upper circulation system can promote the breakup of surfactant micelles in the upper part of the water dosing cylinder. Surfactants enter the filter screen, where they are drawn out through the outlet pipe connected to the third circulation mixing pump D, circulated through the third impingement mixer M3, and then re-enter the filter screen t1A through the nozzle. The third impingement mixer M3 promotes the breakup of surfactant micelles, and the nozzles facilitate the dispersion of surfactant micelles. Only sufficiently small micelles can pass through the filter screen mesh and no longer participate in the upper circulation, while surfactant micelles larger than the filter screen mesh remain within the filter screen for further breakup and dispersion.

[0057] In some embodiments, the viscous oil-water mixing device further includes a fourth impact mixer M4, a circulating transfer pump P8, and an impact cylinder t5. The fourth impact mixer M4, like other impact mixers, includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet, and an outlet pipe with an impact nozzle outlet. The inlet pipe of the fourth impact mixer M4 is connected to the bottom of the water dosing cylinder t1 via the circulating transfer pump P8. The nozzle outlet and the impact nozzle outlet of the fourth impact mixer M4 are respectively connected to the impact cylinder t5. The impact cylinder t5 is located at the upper part of the viscous oil-water mixing tank and is connected to the upper end of the feed pipe assembly FPA.

[0058] In some embodiments, such as Figure 2 As shown, a liquid column nozzle JN is connected to one side wall of the surfactant dosing cylinder t2. The liquid coming out of the surfactant dosing cylinder passes sequentially through the water dosing cylinder t1, the circulating transfer pump P8 and the liquid column nozzle, and is sprayed by the liquid column nozzle to the other side wall of the surfactant dosing cylinder t2.

[0059] In some embodiments, the second impact mixer M2 further includes an outlet pipe with a defoaming impact nozzle AFN disposed on the upper part of one side wall of the viscous oil-water mixing tank. Since foam reduces the performance of the impact nozzle, the defoaming impact nozzle is used to maintain sufficient air space above the viscous oil-water mixing tank t3 for optimal mixing. In some embodiments, the top of the viscous oil-water mixing tank t3 is also provided with a defoaming vent valve AFV.

[0060] To maintain air space between the liquid level and the top of the viscous oil-water mixing tank t3, the volume of the viscous oil mixing tank t3 is greater than the sum of the volumes of the surfactant dosing cylinder t2 and the water dosing cylinder t1. Similarly, the volume of the emulsion mixing tank T3 is greater than the sum of the capacities of the diesel dosing cylinder T1 and the viscous oil-water metering tank T2, and air space is maintained between the liquid level and the top of the emulsion mixing tank T3.

[0061] Each dosing cylinder is equipped with a float shut-off valve. The float shut-off valve facilitates the automatic filling and emptying of each dosing cylinder.

[0062] like Figure 8 As shown, each impact mixer includes a cavity 31, an inlet pipe 35, an outlet pipe 32, and an equalizing cylinder 34. The inlet pipe has a liquid jet nozzle outlet, and there are two outlet pipes, one with a liquid jet nozzle outlet and the other with an equalizing cylinder 34 connected to two impact nozzle outlets. An air space 37 is maintained inside the cavity 31 of the impact mixer, and the outlet of the inlet pipe is located within this air space. The inlet of the outlet pipe is near the bottom of the cavity 31, trapping air inside when the liquid level 36 rises. Since the impact force is greater in air than in liquid, the air space is used to enhance the jet impact to break up the mixing particles, ensuring optimal impact crushing results.

[0063] The structure of the water supply tank t6 is as follows: Figure 6As shown, it includes a cylindrical upper part 11 and a conical lower part 12. The cylindrical upper part 11 has a positive pressure filter inlet 13 on its side, with a one-way valve 16 inside to prevent backflow. The lower end of the conical lower part 12 has an outlet 14, with a ball valve 15 inside. The top surface of the cylindrical upper part 11 has an on / off vent valve 17. When connected to a positive pressure supply source, such as a faucet, the water supply tank t6 can be automatically loaded. The on / off vent valve 17 is manually opened to release air during loading. Once the dosing cylinder is full, the vent valve 17 closes. The one-way valve at the inlet prevents backflow. The dosing cylinder automatically refills when the internal liquid is drawn out. Water is drawn into the dosing cylinder through the inlet, avoiding potential leakage problems associated with float valves.

[0064] Each feed pipe assembly FPA, such as Figure 7 As shown, it includes a feed pipe 21, a height adjuster 22 located at the upper end of the feed pipe, and a tapered outlet 23 located at the lower end of the feed pipe. Figure 4 As shown, the conical outlet 23 is located near the funnel-shaped bottom of the mixing tank. The gap W between the conical outlet 23 and the funnel-shaped bottom of the mixing tank can be adjusted by adjusting the height of the feed pipe, and the height adjuster 22 is used to adjust the height of the feed pipe. The change in the gap between the conical outlet 23 and the funnel-shaped bottom of the mixing tank can control the feed rate. In some embodiments, such as Figure 5 As shown, the feed pipe 21 is located at the center of the top surface of the mixing tank. The top surface of the emulsion mixing tank T3 is also provided with a liquid column nozzle JN, an impact nozzle IN, and a vent 24 for the impact mixer.

[0065] The diesel dosing cylinder T1, the viscous water dosing cylinder T2, the surfactant dosing cylinder t2, and the water dosing cylinder t1 are all equipped with a vent shut-off valve at the top. When the dosing cylinder is full, the vent shut-off valve closes its position. To ensure measurement accuracy, the diesel dosing cylinder T1, the viscous water dosing cylinder T2, the surfactant dosing cylinder t2, and the water dosing cylinder t1 are all installed vertically and horizontally, which can be achieved using an adjustable mounting bracket. Figure 9 This is a schematic diagram showing the dosing cylinder T2 for oily / watery substances positioned perpendicular to the horizontal plane. Assuming the dosing cylinder is tilted, as... Figure 10 As shown, the liquid level 42 has reached the position of the vent shut-off valve, such as a float valve, which has closed the vent of the dosing cylinder, meaning the dosing cylinder is considered full. However, the triangular area above the vent shut-off valve is actually an air space 43. This means that the dosing cylinder cannot actually be filled when tilted, which will affect the measurement accuracy. Furthermore, if the float valve is not completely closed, overflow will occur.

[0066] The liquid jet nozzle, impact nozzle, and defoaming nozzle are all existing technologies, and their spraying effect diagrams are shown below. Figure 11 , Figure 12 and Figure 13As shown, the specific structure will not be described in detail here.

[0067] An embodiment of a method for preparing diesel emulsified fuel, such as... Figure 1 As shown, the diesel emulsified fuel preparation system described above includes the following steps:

[0068] (1) Turn on the viscous water supply pump P2 to start adding viscous water to the viscous water dosing cylinder T2. When the viscous water dosing cylinder T2 is full, the float shut-off valve in the viscous water supply pump P2 will automatically close it.

[0069] (2) Open the outlet valve of the viscous water dosing cylinder T2, and the viscous water in the viscous water dosing cylinder T2 enters the emulsion mixing tank T3 by gravity.

[0070] (3) Turn on the diesel supply pump P1 and start adding diesel dosage cylinder T1. The float shut-off valve in diesel dosage cylinder T1 will automatically close it.

[0071] (4) Open the outlet valve of diesel dosing cylinder T1, and the diesel from diesel dosing cylinder T1 enters the emulsion mixing tank T3 by gravity.

[0072] (5) When the system starts, turn on the first circulating mixing pump P3. The mixture in the emulsion mixing tank flows out from the bottom of the funnel-shaped tank of the emulsion mixing tank for circulation, and after being mixed by impact inside the first impact mixer M1, it is sprayed into the emulsion mixing tank through the nozzle of the first impact mixer M1 and the impact nozzle.

[0073] (6) After a set time of cyclic mixing, the emulsified fuel prepared in the emulsion mixing tank T3 is discharged through the outlet located at the bottom of the emulsion mixing tank T3.

[0074] In one embodiment, the specific operating steps of the diesel emulsified fuel preparation method are as follows: Figure 3 As shown:

[0075] The first step, initial startup, is to fill the supply box.

[0076] 1. Turn on the system power;

[0077] 2. Open valve V6, close valve V7, and start diesel pump P9 to refuel diesel supply tank T4;

[0078] 3. Open valve V9, close valve V8, and start viscous water pump P10 to fill viscous water supply tank T5;

[0079] 4. When the diesel supply tank T4 and the viscous water supply tank T5 are full, pumps P9 and P10 will automatically stop.

[0080] The second step is to start the hybrid system.

[0081] 1. Open valves V7 and V8, and close valves V1 and V2.

[0082] 2. Add diesel fuel to the diesel fuel dispenser T1 under the action of diesel fuel supply pump P1, and add viscous water dispenser T2 under the action of viscous water supply pump P2.

[0083] 3. When the diesel fuel dosing cylinder T1 and the viscous water dosing cylinder T2 are full, the diesel fuel supply pump P1 and the viscous water supply pump P2 will automatically stop.

[0084] 4. Close valve V5 and open valves V3 and V4.

[0085] 5. Open valve V2, and the viscous oil and water will be added to the emulsion mixing tank T3 by gravity.

[0086] 6. The mixing process begins under the action of the first circulation mixing pump P3.

[0087] 7. After setting the loading and mixing time, close valve V2 and open valve V1. Diesel fuel is added to emulsion mixing tank T3 by gravity.

[0088] 8. Under the action of the first circulating mixing pump P3, the mixture in the emulsion mixing tank flows out from the bottom of the funnel-shaped tank of the emulsion mixing tank for circulation, and after being mixed by impact in the mixing chamber of the first impact mixer M1, it is sprayed into the emulsion mixing tank through the nozzle and impact nozzle of the first impact mixer M1, thereby mixing diesel and viscous water evenly into diesel emulsion fuel that meets the standards.

[0089] The working principle of the diesel emulsified fuel preparation method is as follows:

[0090] 1. Both viscous water and diesel fuel enter the emulsion mixing tank T3 by gravity. Gravity feeding allows for reliable feed rate control through process optimization methods such as changing the outlet orifice diameter, and also contributes to cost-effectiveness.

[0091] 2. The impact mixer M1 is designed to promote "fluid impact mixing" by spraying a mixture of viscous oil-water and diesel fuel onto the hard surface of the upper wall of the mixing chamber. This impact promotes the breakup of surfactant microspheres. The inlet of the impact mixer's outlet pipe is located near the bottom of the mixing chamber, thus trapping air within the chamber. The pressure in the mixing chamber is generated by the difference between the input and output fluid volumes, which is achieved by changing the diameter of the outlet pipe.

[0092] 3. The conical outlet at the lower end of the feed pipe ensures that diesel fuel is delivered to the bottom of the emulsion mixing tank, where it mixes with the viscous oil and water at the bottom of the tank, and is then pumped by the circulating mixing pump into the M1 impact mixer. The feed rate of the viscous oil and water can be controlled by adjusting the gap between the funnel-shaped bottom of the emulsion mixing tank T3 and the edge of the conical outlet of the feed pipe.

[0093] 4. The float shut-off valve facilitates automatic filling and emptying of the dosing cylinder. Using a metered dosing cylinder, the mixing ratio of diesel fuel and viscous water can be accurately and reliably controlled.

[0094] 5. The design of the dosing cylinder facilitates the automatic loading of diesel fuel from the ship's fuel supply as needed, and is also suitable for situations where the mixer is connected to a viscous oil-water mixing device for online operation.

[0095] The present invention provides a method for preparing viscous water, such as... Figure 2 As shown, it includes the following steps:

[0096] 1. Add water dosing cylinder t1 and surfactant dosing cylinder t2.

[0097] Turn on the surfactant supply pumps, namely surfactant supply pump P4 and water supply pump P5; open valves 1 and 2, and close valves 3 and 4. When the water dosing cylinder t1 is full, water supply pump P5 will automatically shut off via an electrical trip switch. When the surfactant calibration tank t2 is full, surfactant supply pump P4 will automatically shut off via a motorized trip switch.

[0098] 2. Begin the premixing process of surfactant and water.

[0099] Turn on the circulating transfer pump P8 and the third circulating mixing pump P7, open valves 3, 4 and 5, and close valve 6 to premix the surfactant and water.

[0100] In some embodiments, during the premixing process, the liquid sequentially passes through the water dosing cylinder t1, the circulating transfer pump P8, and a liquid jet nozzle located on one side wall of the surfactant dosing cylinder t2, and is sprayed onto the other side wall of the surfactant dosing cylinder t2 to rinse away any surfactant residue remaining on the inner wall of the surfactant dosing cylinder. This helps to make the surfactant-to-water ratio more accurate.

[0101] Meanwhile, during the premixing period, the liquid in the upper filter screen t1A of the water dosing cylinder t1 is drawn out by the third circulating mixing pump P7, passes through the interior of the third impact mixer M3, and is then sprayed into the filter screen t1A through the nozzle and impact nozzle of the third impact mixer M3 for mixing.

[0102] 3. The premixed mixture is then transported to the viscous oil-water mixing tank t3.

[0103] After premixing begins and a set time (e.g., 10 minutes) has elapsed, the circulating transfer pump P8 remains open while the third circulating mixing pump P7 is closed. Valves 3, 4, and 5 remain open, and then valve 6 is opened to deliver the premixed mixture to the viscous oil-water mixing tank t3. The premixed mixture, after passing through the circulating transfer pump P8, sequentially passes through the fourth impact mixer M4, the impact cylinder t5, and the feed pipe assembly FPA before entering the funnel-shaped bottom of the viscous oil-water mixing tank t3. Before entering the feed pipe assembly, the premixed mixture is further mixed by the fourth impact mixer M4 and the impact cylinder t5. The liquid jet nozzle JN of the fourth impact mixer M4 sprays liquid onto the side wall of the impact cylinder, while its impact nozzle IN sprays liquid from the top of the impact cylinder t5 downwards.

[0104] Meanwhile, the defoaming impact nozzle AFN of the fourth impact mixer M4 sprays from one side wall of the viscous oil-water mixing tank to eliminate excessive foam in the mixture.

[0105] After a certain period of time, such as 10 minutes (the time is adjustable), or based on the sensing information from the pressure sensor inside the viscous oil-water mixing tank t3, the circulating transfer pump P8 is shut off, and valves 3, 4, and 6 are closed to stop the delivery of the premixed mixture to the viscous oil-water mixing tank t3.

[0106] 4. Start the mixing circulation of the viscous oil-water mixing tank t3.

[0107] Turn on the second circulation mixing pump P6, open valve 7, and close valve 8. Under the action of the second circulation mixing pump P6, the mixing circulation of the viscous oil-water mixing tank t3 is started. The mixture in the viscous oil-water mixing tank t3 flows out from the funnel-shaped bottom of the tank and is mixed by impact inside the second impact mixer M2. Then, it is sprayed into the viscous oil-water mixing tank t3 through the nozzle and impact nozzle of the second impact mixer M2. The circulation process will continue to run for a predetermined time, such as 15 minutes.

[0108] 5. Transfer the prepared adhesive to the adhesive tank t4.

[0109] The second circulating mixing pump P6 remains open. Open valve 8 and close valve 7 to transfer the prepared viscous water to the viscous water tank t4.

[0110] like Figure 2 As shown, in the viscous oil-water mixing device of the present invention:

[0111] 1. The premixing of surfactant and water is achieved by circulating the mixture through nozzles located on the wall of surfactant dosing tank t2. This helps remove residual surfactant adhering to the wall of surfactant dosing tank t2, ensuring the accuracy of the mixing ratio. Residual surfactant adhering to the wall of t2 indicates that the surfactant has not been used, which will negatively affect the mixing ratio of surfactant and water.

[0112] 2. The calibration water dosing tank t1 has an upper circulation system to promote the breakup of surfactant micelles. The surfactant enters the metal filter t1A, where it is drawn out through the outlet pipe connected to the third circulation mixing pump P7 and circulated through the third impact mixer M3, then re-enters t1A through the nozzle. The third impact mixer M3 promotes surfactant micelle fragmentation, and the nozzle facilitates the dispersion of the surfactant micelles. Only small micelles and water can pass through the metal filter.

[0113] 3. Due to the properties of hydrophilic oil-water surfactants, preparing viscous water separately is advantageous for producing water-in-oil emulsions. Only when oil-encapsulated water droplets enter the hot combustion chamber can the required secondary atomization be achieved.

[0114] 4. The adjustable-height feed assembly FPA directly delivers the mixture of emulsifier and water containing surfactant micelles to the bottom of t3, where it is immediately drawn out by the second circulating mixing pump P6 and transferred to the second impact mixer M2. There, the mixture is sprayed onto a hard surface at the top of the mixer to break up the micelles. The mixture exits the second impact mixer M2 and enters t3 through impact nozzles and spray nozzles for further reduction of micelle particles. This method subjectes all micelles to high impact forces. It is more efficient than conventional high-shear mixing agitators, where it is difficult to ensure that micelles are fully sheared. This process optimizes the use of surfactants.

[0115] The operating principles and mechanisms of this invention are as follows:

[0116] 1. Oil-water surfactants form micelles (microspheres) when they come into contact with oil or water.

[0117] 2. This invention uses impact force to break these small balls.

[0118] 3. Since the impact force is greater in air than in liquid, an air space is created to ensure optimal effect.

[0119] 4. The mixing tank is designed to have a capacity greater than the combined capacity of the two dosing cylinders containing different raw materials, in order to create an air space between the liquid level and the top of the tank. This air space above the liquid level in the mixing tank enhances the performance of the impact nozzle located at the top of the tank.

[0120] 5. Since foam reduces the performance of the impact nozzle, the defoaming nozzle located in the air space below the impact nozzle is used to maintain sufficient air space for optimal mixing.

[0121] 6. The impact mixer is designed to create an air space within the tank to enhance the jet impact and break up the pellets. The inlet of the outlet pipe is located near the bottom of the impact mixer. As the liquid level rises, the air is trapped inside.

[0122] 7. Calibration dosing tanks are accurate and reliable. They also help determine the dimensions of mixing tanks, thus providing space between the liquid level and the top of the tank.

[0123] 8. The float discharge / shut-off valve facilitates the calibration of the automatic filling / discharging of the feed tank.

[0124] Because tap water is widely available, the production of modular diesel emulsified fuel preparation systems eliminates water transportation costs. Locating these systems near gas stations can further reduce costs. The modular system allows participating oil suppliers to determine the scale of their diesel emulsified fuel preparation system plants based on the needs of each region.

[0125] This invention provides engine manufacturers with a cost-effective diesel emulsified fuel preparation system that reduces carbon emissions, nitrogen oxides, hydrocarbons, carbon monoxide, particulate matter, and other pollutants. A second objective is to provide oil suppliers with an efficient method for producing and distributing emulsified diesel. It addresses the issue of downward settling of the dispersed phase in diesel emulsified fuel to ensure fuel homogeneity. The diesel emulsified fuel preparation system can be located near gas stations, utilizing existing local diesel and tap water supplies, thereby reducing logistical costs.

[0126] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and these modifications and substitutions should all fall within the protection scope of the appended claims of the present invention.

Claims

1. An apparatus for producing sticky oil water, characterized by: The surface active agent supply tank, the water supply tank, the surface active agent dose cylinder, the water dose cylinder, the oil-water mixing tank and the second impact mixer are connected by pipes. The inlet of the surface active agent dose cylinder is connected to the surface active agent supply tank by a surface active agent supply pump, and the outlet of the surface active agent dose cylinder is connected to the water dose cylinder by a valve. The bottom of the water dose cylinder is connected to the bottom of the water supply tank by a water supply pump. The outlet of the water dose cylinder is connected to the oil-water mixing tank by a valve and a pipe. The second impact mixer includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet and an outlet pipe with an impact nozzle outlet. The inlet pipe of the second impact mixer is connected to the bottom of the oil-water mixing tank by a second circulating mixing pump.

2. The oil sticky water preparation device according to claim 1, characterized by: The liquid column nozzle outlet and the impact nozzle outlet of the second impact mixer are arranged in the air space of the oil-water mixing tank.

3. The oil sticky water preparation device according to claim 1, characterized by: The volume ratio of the surface active agent dose cylinder and the water dose cylinder is equal to the volume ratio of the surface active agent and water in the oil-water mixture.

4. The oil sticky water preparation device according to claim 3, characterized by: The third impact mixer includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet and an outlet pipe with an impact nozzle outlet.

5. The oil sticky water preparation device according to claim 1, characterized by: The inlet pipe of the third impact mixer is connected to the upper part of the water dose cylinder by a third circulating mixing pump.

6. The oil sticky water preparation device according to claim 1, characterized by: The liquid column nozzle outlet and the impact nozzle outlet of the third impact mixer are arranged in the air space of the upper part of the water dose cylinder.

7. The oil sticky water preparation device according to claim 1, characterized by: The upper part of the water dose cylinder has a filter screen, and the liquid column nozzle outlet and the impact nozzle outlet of the third impact mixer are arranged above the filter screen. The side wall of the surface active agent dose cylinder is connected to a liquid column nozzle. The liquid from the surface active agent dose cylinder passes through the water dose cylinder, the circulating transfer pump and the liquid column nozzle of the side wall of the surface active agent dose cylinder in sequence, and is sprayed from the liquid column nozzle to the other side wall of the surface active agent dose cylinder. The fourth impact mixer includes an inlet pipe with a liquid column nozzle outlet, an outlet pipe with a liquid column nozzle outlet and an outlet pipe with an impact nozzle outlet. The inlet pipe of the fourth impact mixer is connected to the bottom of the water dose cylinder by the circulating transfer pump. The liquid column nozzle outlet of the fourth impact mixer is connected to the side wall of the impact cylinder, and the impact nozzle outlet of the fourth impact mixer is connected to the top of the impact cylinder. The impact cylinder is arranged in the upper part of the oil-water mixing tank and is connected to the upper end of the feed pipe assembly. The second impact mixer includes a defoaming impact nozzle arranged on the upper part of the side wall of the oil-water mixing tank. Each impact mixer has an air space, the outlet of the inlet pipe of each impact mixer is arranged in the air space, and the inlet of the outlet pipe of each impact mixer is arranged close to the bottom of each impact mixer. The feed pipe assembly includes a feed pipe, a height adjuster arranged on the upper end of the feed pipe and a conical outlet arranged on the lower end of the feed pipe.

8. The oil sticky water preparation device according to claim 1, characterized by: The surfactant dose cylinder and the water dose cylinder are arranged vertically to the horizontal plane.

9. A method for preparing sticky oil water based on the preparation device for sticky oil water according to any one of claims 1, 6-8. characterized in that The mixing of the surfactant and the water to form the sticky oil water comprises the following steps: A. The surfactant supply pump is opened to fill the surfactant dose cylinder with surfactant from the surfactant supply tank, and when the surfactant dose cylinder is full, the surfactant supply pump is closed; B. The water supply pump is opened to fill the water dose cylinder with water from the water supply tank, and when the water dose cylinder is full, the water supply pump is closed; C. The surfactant in the surfactant dose cylinder and the water in the water dose cylinder are premixed; D. The premixed mixture is transferred by the circulating transfer pump to the lower part of the sticky oil water mixing tank through the feed pipe assembly; E. The mixing cycle of the sticky oil water mixing tank is started under the action of the second circulating mixing pump, the mixture in the sticky oil water mixing tank flows out from the funnel-shaped bottom of the sticky oil water mixing tank, and is mixed by impact in the second impact mixer, and then is sprayed into the sticky oil water mixing tank through the liquid column nozzle and the impact nozzle of the second impact mixer; F. After the mixing cycle of step (E) is completed for a set time, the prepared sticky oil water in the sticky oil water mixing tank is discharged through the outlet at the bottom of the sticky oil water mixing tank.

10. The method of claim 9, wherein: Based on the side wall of the surfactant dose cylinder, a liquid column nozzle is connected, and the liquid from the water dose cylinder passes through the circulating transfer pump and the liquid column nozzle of the side wall of the surfactant dose cylinder in sequence, and is sprayed from the liquid column nozzle to the other side wall of the surfactant dose cylinder, for washing the surfactant remaining on the inner wall of the surfactant dose cylinder.

11. The method of claim 10, wherein the oil is a vegetable oil. Based on the upper part of the water dose cylinder having a filter screen, the liquid column nozzle outlet and the impact nozzle outlet of the third impact mixer are located above the filter screen, and the premixing of the surfactant and the water in step C refers to that the liquid in the filter screen of the upper part of the water dose cylinder is sucked out by the third circulating mixing pump, passes through the inside of the third impact mixer, and is sprayed into the filter screen through the liquid column nozzle and the impact nozzle of the third impact mixer.

12. The method of claim 10, wherein: Based on the preparation device for sticky oil water further comprising a fourth impact mixer and an impact cylinder, the inlet pipe of the fourth impact mixer comprises a liquid column nozzle outlet, the outlet pipe comprises a liquid column nozzle outlet and an impact nozzle outlet, the inlet pipe of the fourth impact mixer is connected to the bottom of the water dose cylinder by means of the circulating transfer pump, the liquid column nozzle outlet of the fourth impact mixer is connected to the side wall of the impact cylinder, and the impact nozzle outlet of the fourth impact mixer is connected to the top of the impact cylinder; the impact cylinder is arranged at the upper part of the sticky oil water mixing tank and is connected to the upper end of the feed pipe assembly; in step D, the premixed mixture further passes through the fourth impact mixer and the impact cylinder for mixing before entering the feed pipe assembly, the liquid column nozzle outlet of the fourth impact mixer sprays to the side wall of the impact cylinder, and the impact nozzle of the fourth impact mixer sprays downward from the top of the impact cylinder.

13. The method of claim 12, wherein: The second impingement mixer further comprises a defoaming impingement nozzle arranged on the upper part of the side wall of the sticky oil water mixing tank, and the defoaming impingement nozzle of the second impingement mixer sprays from the side wall of the sticky oil water mixing tank to eliminate excessive foam in the mixed liquid.

14. A diesel emulsion fuel preparation system comprising a diesel oil supply tank, a viscous oil water supply tank, an emulsion mixing tank, characterized by, Further comprising: the sticky oil water mixing device as claimed in any one of claims 1, 6 to 8 connected with the sticky oil water supply tank for mixing water and surfactant; and A diesel dose cylinder, the inlet of which is communicated with the diesel supply tank by means of a diesel supply pump, and the outlet of which is communicated with a feed pipe assembly in the emulsion mixing tank through a valve; A sticky oil water dose cylinder, the inlet of which is communicated with the sticky oil water supply tank by means of a sticky oil water supply pump, and the outlet of which is communicated with a feed pipe assembly in the emulsion mixing tank through a valve, which can directly feed the emulsion mixing tank to the lower part of the emulsion mixing tank; A first impingement mixer, which comprises a liquid inlet pipe with a liquid column nozzle outlet, a liquid outlet pipe with a liquid column nozzle outlet and a liquid outlet pipe with an impingement nozzle outlet, the liquid inlet pipe of the first impingement mixer is communicated with the funnel-shaped tank bottom of the emulsion mixing tank by means of a first circulating mixing pump, and the liquid column nozzle outlet and the impingement nozzle outlet of the first impingement mixer are arranged in the air space of the emulsion mixing tank, respectively; The capacity ratio of the diesel dose cylinder and the sticky oil water dose cylinder is equal to the set ratio of diesel and sticky oil water, and the sum of the capacities of the diesel dose cylinder and the sticky oil water dose cylinder is less than the capacity of the emulsion mixing tank.

15. The diesel emulsified fuel production system according to claim 14, characterized by: The feed pipe assembly of the emulsion mixing tank comprises a feed pipe, a height adjuster at the upper end of the feed pipe and a conical outlet at the lower end of the feed pipe, which is close to the funnel-shaped tank bottom of the emulsion mixing tank, and the sticky oil water in the sticky oil water dose cylinder and the diesel in the diesel dose cylinder are transported to the bottom of the emulsion mixing tank through the feed pipe assembly.

16. The diesel emulsified fuel production system according to claim 14, characterized by: The diesel dose cylinder and the sticky oil water dose cylinder are provided with a float cut-off valve.

17. The diesel emulsified fuel production system according to claim 14, characterized by: The first impingement mixer has an air space inside, the outlet of the liquid inlet pipe is located in the air space, and the inlet of the liquid outlet pipe is close to the bottom of the impingement mixer.

18. The diesel emulsified fuel production system according to claim 14, characterized by: The diesel dose cylinder and the sticky oil water dose cylinder are arranged vertically to the horizontal plane.

19. A method for preparing diesel emulsified fuel based on the diesel emulsified fuel preparation system of claim 14, wherein the surfactant and water are mixed to form sticky oil water, and then the sticky oil water and diesel are mixed to form emulsified fuel. The mixing of the surfactant and water to form sticky oil water comprises the following steps: A. The surfactant supply pump is opened to fill the surfactant dose cylinder with surfactant from the surfactant supply tank, and when the surfactant dose cylinder is full, the surfactant supply pump is closed; B. The water supply pump is opened to fill the water dose cylinder with water from the water supply tank, and when the water dose cylinder is full, the water supply pump is closed; C. The surfactant in the surfactant dose cylinder and the water in the water dose cylinder are premixed; D. The premixed mixture is transported by a circulating pump to at least the feed pipe assembly and into the lower part of the sticky oil water mixing tank. E. Under the action of the second circulating mixing pump, the mixing cycle of the viscous oil water mixing tank is started, the mixture in the viscous oil water mixing tank flows out from the funnel-shaped tank bottom of the viscous oil water mixing tank, and after impact mixing in the second impact mixer, the mixture is sprayed into the viscous oil water mixing tank through the liquid column nozzle and the impact nozzle of the second impact mixer; F. After the mixing cycle of step (E) for a set time, the prepared viscous oil water in the viscous oil water mixing tank is discharged through the outlet at the bottom of the viscous oil water mixing tank; The mixing of viscous oil water and diesel oil to form emulsified fuel includes the following steps: (1) The viscous oil water supply pump is opened to fill the viscous oil water into the viscous oil water dosing cylinder from the viscous oil water supply tank, and when the viscous oil water dosing cylinder is full, the viscous oil water supply pump is closed; (2) The diesel oil supply pump is opened to fill the diesel oil into the diesel oil dosing cylinder from the diesel oil supply tank, and when the diesel oil dosing cylinder is full, the diesel oil supply pump is closed; (3) The outlet valve of the viscous oil water dosing cylinder is opened, and the viscous oil water in the viscous oil water dosing cylinder enters the emulsion mixing tank bottom through the feed pipe assembly by gravity; (4) After the viscous oil water in the viscous oil water dosing cylinder in step (3) is completely fed, the outlet valve of the diesel oil dosing cylinder is opened, and the diesel oil from the diesel oil dosing cylinder enters the emulsion mixing tank bottom through the feed pipe assembly by gravity; (5) Under the action of the first circulating mixing pump, the mixture in the emulsion mixing tank flows out from the funnel-shaped tank bottom of the emulsion mixing tank for circulation, and after impact mixing in the first impact mixer, the mixture is sprayed into the emulsion mixing tank through the liquid column nozzle and the impact nozzle of the first impact mixer; (6) After the mixing cycle of step (5) for a set time, the prepared fuel in the emulsion mixing tank is discharged through the outlet at the bottom of the emulsion mixing tank.

20. The method of claim 19, wherein: The gap between the funnel-shaped tank bottom of the emulsion mixing tank and the tapered outlet edge of the feed pipe assembly is adjusted by adjusting the height of the feed pipe, so as to control the feeding speed of the viscous oil water.

21. The method of claim 19, wherein: The diesel oil feeding speed of the diesel oil dosing cylinder in step (4) is controlled by the outlet pipe diameter of the lower part of the diesel oil dosing cylinder.

22. The method of claim 19, wherein: Based on the liquid column nozzle connected to one side wall of the surfactant dosing cylinder, when the surfactant and water are mixed to form viscous oil water, the liquid from the water dosing cylinder passes through the circulating pump and the liquid column nozzle of one side wall of the surfactant dosing cylinder in sequence, and is sprayed to the other side wall of the surfactant dosing cylinder through the liquid column nozzle, so as to flush the surfactant remaining on the inner wall of the surfactant dosing cylinder.

23. The method of claim 19, wherein the diesel fuel emulsion is prepared by, Based on the filter screen at the upper part of the water dosing cylinder, the liquid column nozzle outlet and the impact nozzle outlet of the third impact mixer are located above the filter screen, and the premixing of the surfactant and water in step C refers to that the liquid in the filter screen at the upper part of the water dosing cylinder is sucked out, passes through the third impact mixer, and is sprayed into the filter screen through the liquid column nozzle and the impact nozzle of the third impact mixer.

24. The method of claim 19, wherein: The preparation device for the viscous oil water further comprises a fourth impingement mixer and an impingement cylinder. The fourth impingement mixer comprises a liquid inlet pipe with a liquid column nozzle outlet, a liquid outlet pipe with a liquid column nozzle outlet and a liquid outlet pipe with an impingement nozzle outlet. The liquid inlet pipe of the fourth impingement mixer is connected with the bottom of the water dose cylinder by means of the circulating transmission pump. The liquid column nozzle outlet of the fourth impingement mixer is connected with a side wall of the impingement cylinder. The impingement nozzle outlet of the fourth impingement mixer is connected with the top of the impingement cylinder. The impingement cylinder is arranged at the upper part of the viscous oil water mixing tank and is connected with the upper end of the feed pipe assembly. In step D, the premixed mixture further passes through the fourth impingement mixer and the impingement cylinder for mixing before entering the feed pipe assembly. The liquid column nozzle outlet of the fourth impingement mixer sprays towards the side wall of the impingement cylinder. The impingement nozzle of the fourth impingement mixer sprays downwards from the top of the impingement cylinder.

25. The method of claim 19, wherein: The second impingement mixer further comprises a defoaming impingement nozzle arranged on the upper part of a side wall of the viscous oil water mixing tank. When the surfactant and water are mixed to form the viscous oil water, the defoaming impingement nozzle of the second impingement mixer sprays from the side wall of the viscous oil water mixing tank to eliminate excessive foam in the mixed liquid.

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