CN115957648A

CN115957648A - Viscous oil water preparation device and method, and diesel emulsified fuel preparation system and method

Info

Publication number: CN115957648A
Application number: CN202111187399.5A
Authority: CN
Inventors: 陈序泉
Original assignee: Shenzhen Luokaben Chemical Technology Co ltd
Current assignee: Shenzhen Luokaben Chemical Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2023-04-14
Also published as: WO2023060983A1

Abstract

The invention relates to a viscous oil-water preparation device and method, and a diesel emulsified fuel preparation system and method, wherein the metering of the prepared raw materials adopts a dosage cylinder, and the accurate proportioning of the raw materials is realized by the simplest structure and method; and through the mixed structure formed by the impact mixer, the circulating mixing pump and the mixing tank, the raw materials are conveyed to the bottom of the emulsion mixing tank through the feeding pipe, are pumped by the circulating mixing pump before being layered, are conveyed to the impact mixer for mixing, and are then injected into the air space of the mixing tank to further break mixed particles, so that the uniformity of the emulsified fuel is greatly improved.

Description

Viscous oil water preparation device and method, and diesel emulsified fuel preparation system and method

Technical Field

The invention relates to the technical field of diesel engines, which can enable the diesel engine to burn both diesel oil and emulsified oil and can be applied to the fields of various diesel engines and boilers.

Background

The diesel oil emulsified fuel is an emulsion with diesel oil as a continuous phase and water as a dispersed phase. The working principle of the diesel oil emulsified fuel used for the engine is as follows: the emulsified fuel enters an engine cylinder to be atomized for the second time, so that oil particles become finer and are fully mixed and combusted with oxygen. The prior emulsion fuel generally has the following problems: first, the uniformity is poor. DEF fuel performance depends on DEF fuel homogeneity, and poor homogeneity can adversely affect engine performance, such as unstable engine speeds, high fuel consumption, and possibly reduced DEF moisture content, and can also result in higher NOX, PM, HC, and CO emissions. Secondly, the ratio of diesel oil to viscous oil water (formed by mixing surfactant and water) is difficult to control, and the surfactant is often caused to exceed the necessary amount. Unlike hydrocarbons, surfactants do not produce water during combustion. Because internal combustion engines are driven primarily by steam expansion rather than heat, if the surfactant is in excess, this results in a relatively low water content and relatively little oxygen available for combustion, resulting in incomplete combustion.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a viscous oil-water preparation apparatus and method, and a diesel emulsified fuel preparation system and method, which use a simple structure and method to achieve accurate proportioning of raw materials, in view of the above-mentioned defects in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows:

providing a viscous oil-water preparation device, which comprises a surfactant supply tank, a water supply tank, a surfactant measuring cylinder, a water agent measuring cylinder, a viscous oil-water mixing tank and a second impact mixer; the inlet of the surfactant measuring cylinder is communicated with the surfactant supply box by a surfactant supply pump, and the outlet of the surfactant measuring cylinder is communicated with the aqua measuring cylinder by a valve; the bottom of the aqueous measuring cylinder is connected with the bottom of the water supply tank by a water supply pump, and the outlet of the aqueous measuring cylinder is at least communicated with a feed pipe component which is positioned in the viscous oil-water mixing tank and can directly feed the feed material into the lower part of the viscous oil-water mixing tank through a valve; the second impact 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 impact nozzle outlet, the liquid inlet pipe of the second impact mixer is communicated with the bottom of the viscous oil-water mixing tank by a second circulating mixing pump, and the nozzle outlet and the impact nozzle outlet of the second impact mixer are respectively arranged in the air space of the viscous oil-water mixing tank; the volume ratio of the surfactant measuring cylinder and the aqueous solution measuring cylinder is equal to the set proportion of the surfactant and the water contained in the viscous oil water to be prepared, and the sum of the volumes of the surfactant measuring cylinder and the aqueous solution measuring cylinder is less than the volume of the viscous oil water mixing tank. ,

the viscous oil water preparation method is based on the viscous oil water preparation device, and the viscous oil water preparation method comprises the following steps of:

A. the surfactant supply pump is turned on, surfactant is filled into the surfactant dosing cylinder from the surfactant supply tank, and when the surfactant dosing cylinder is full, the surfactant supply pump is turned off;

B. the water supply pump is opened, water is filled into the water agent measuring cylinder from the water supply tank, and when the water agent measuring cylinder is full, the water supply pump is closed;

C. premixing the surfactant in the surfactant measuring cylinder and the water in the water agent measuring cylinder;

D. the premixed mixture enters the lower part of the viscous oil-water mixing tank at least through a feed pipe assembly by a circulating transfer pump;

E. opening the mixing cycle of the viscous oil-water mixing tank under the action of a second circulating mixing pump, wherein the mixture in the viscous oil-water mixing tank flows out of the funnel-shaped tank bottom of the viscous oil-water mixing tank, is subjected to impact mixing in a second impact mixer, and is sprayed into the viscous oil-water mixing tank through a nozzle and an impact nozzle of the second impact mixer;

F. and (E) after the mixing cycle of the step (E) is carried out for a set time, discharging the prepared viscous oil water in the viscous oil water mixing tank through an outlet positioned at the bottom of the viscous oil water mixing tank.

The utility model provides a diesel oil emulsion fuel preparation system, including diesel oil supply tank, viscous oil water supply tank, emulsion blending tank, still include: the viscous oil-water mixing device is connected with the viscous oil-water supply tank and is used for mixing water with the surfactant; and

the inlet of the diesel oil measuring cylinder is communicated with the diesel oil supply tank by a diesel oil supply pump, and the outlet of the diesel oil measuring cylinder is communicated with a feeding pipe component positioned in the emulsion mixing tank by a valve;

the inlet of the oil-viscous agent measuring cylinder is communicated with the oil-viscous agent supply tank by virtue of an oil-viscous agent supply pump, and the outlet of the oil-viscous agent measuring cylinder is communicated with a feed pipe component which is positioned in the emulsion mixing tank and can directly feed materials into the lower part of the emulsion mixing tank through a valve;

the first impact 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 impact nozzle outlet, the liquid inlet pipe of the first impact mixer is communicated with the funnel-shaped tank bottom of the emulsion mixing tank by virtue of a first circulating mixing pump, and the liquid column nozzle outlet and the impact nozzle outlet of the first impact mixer are respectively arranged in the air space of the emulsion mixing tank;

the volume ratio of the diesel oil measuring cylinder and the oil-viscous agent measuring cylinder is equal to the set ratio of diesel oil to oil-viscous water, and the sum of the volumes of the diesel oil measuring cylinder and the oil-viscous agent measuring cylinder is less than the volume of the emulsion mixing tank.

The preparation method of the diesel emulsified fuel is based on the diesel emulsified fuel preparation system, firstly the surfactant and the water are mixed to form the viscous oil water, and then the viscous oil water is mixed with the diesel to form the emulsified fuel, wherein the step of mixing the surfactant and the water to form the viscous oil water comprises the following steps:

C. premixing the surfactant in the surfactant measuring cylinder and the water in the water aqua measuring cylinder;

F. after the mixing cycle of the step (E) is carried out for a set time, discharging the prepared viscous oil water in the viscous oil water mixing tank through an outlet positioned at the bottom of the viscous oil water mixing tank;

mixing viscous oil water with diesel oil to form emulsified fuel comprises the following steps:

(1) Opening the viscous oil water supply pump, filling viscous oil water into the viscous oil water agent measuring cylinder from the viscous oil water supply tank, and closing the viscous oil water supply pump when the viscous oil water agent measuring cylinder is full;

(2) Opening the diesel supply pump, filling diesel oil into the diesel oil measuring cylinder from the diesel oil supply tank, and closing the diesel oil supply pump when the diesel oil measuring cylinder is full;

(3) Opening an outlet valve of the oil-viscous agent measuring cylinder, and allowing the oil-viscous water of the oil-viscous agent measuring cylinder to enter the bottom of the emulsion mixing tank through a feed pipe component by gravity;

(4) After the viscous oil water in the viscous oil water agent measuring cylinder in the step (3) is completely fed, opening an outlet valve of the diesel oil agent measuring cylinder, and completely feeding the diesel oil from the diesel oil agent measuring cylinder into the bottom of the emulsion mixing tank through a feeding pipe component by gravity;

(5) Under the action of a first circulating mixing pump, enabling a mixture in the emulsion mixing tank to flow out of the funnel-shaped tank bottom of the emulsion mixing tank for circulation, and spraying the mixture into the emulsion mixing tank through a liquid column nozzle and an impact nozzle of a first impact mixer after the mixture is impacted and mixed in the first impact mixer;

(6) And (5) after a set time of circulating mixing in the step (5), discharging the prepared fuel in the emulsion mixing tank through an outlet at the bottom of the emulsion mixing tank.

Compared with the prior art, the invention has the advantages that the dosage cylinder is adopted, so that the accurate proportioning of the raw materials is realized by 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 conveyed to the bottom of the mixing tank through the feeding pipe, are pumped by the circulating mixing pump before being layered, are conveyed to the impact mixer for mixing, and are injected into the air space of the mixing tank for further crushing and mixing particles, so that the circulating mixing is set for time, the uniformity of the emulsified fuel is greatly improved, the emulsified fuel prepared by the method disclosed by the invention is completely combusted in an engine, the emission of the engine is extremely low, and the power is sufficient.

Drawings

FIG. 1 is a schematic view of the structure of a system for producing a diesel emulsified fuel according to the present invention;

FIG. 2 is a schematic structural diagram of the viscous oil-water mixing device of the present invention;

FIG. 3 is a schematic diagram of a diesel emulsion fuel production system according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the shape of a mixing tank according to an embodiment of the present invention;

FIG. 5 is a schematic top view of a mixing tank according to an embodiment of the invention;

FIG. 6 is a schematic perspective view of a water supply tank according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a feed tube assembly according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of an impingement mixer of an embodiment of the present invention;

FIG. 9 is a schematic structural view of a dosage drum of an embodiment of the present invention;

FIG. 10 is a schematic representation of the principle of the dose drum of the present invention that results in inaccurate metering when it is assumed to be tilted;

FIG. 11 is a schematic view of the spraying effect of the liquid column nozzle according to the embodiment of the invention;

FIG. 12 is a schematic illustration of the spray effect of an impingement nozzle of an embodiment of the present invention;

fig. 13 is a schematic view of the ejection effect of the defoaming nozzle according to the embodiment of the present invention.

Reference numerals

Detailed Description

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

As shown in fig. 1, a diesel emulsified fuel preparation system comprises an emulsified fuel mixing module and a viscous oil-water mixing device. The emulsified fuel mixing module comprises a diesel oil agent measuring cylinder T1, a viscous oil agent measuring cylinder T2, an emulsified liquid mixing tank T3, a diesel oil supply tank T4, a viscous oil water supply tank T5, a first impact mixer M1, a diesel oil 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 with a viscous oil water supply tank T5 and is used for mixing water and the surfactant.

The import of diesel oil graduated cylinder T1 with the help of diesel oil supply pump P1 with diesel oil supply tank T4 intercommunication, this diesel oil graduated cylinder T1's export is through valve and the inside feed pipe subassembly FPA intercommunication that is located emulsion blending tank T3. The inlet of the oil-viscous agent measuring cylinder T2 is communicated with the oil-viscous water supply tank T5 by means of an oil-viscous water supply pump P2, and the outlet of the oil-viscous agent measuring cylinder T2 is communicated with the feed pipe assembly FPA by a valve. First impingement mixer M1 including the feed liquor pipe that has the export of liquid column nozzle, have the drain pipe of the export of liquid column nozzle and the drain pipe of impingement nozzle export, this first impingement mixer M1's feed liquor pipe with the infundibulate tank bottoms intercommunication of emulsion blending tank T3 with the help of first circulation mixing pump P3, this first impingement mixer M1's liquid column nozzle export and impingement nozzle export set up respectively in emulsion blending tank T3's upper portion. The first impingement mixer M1 and the first recirculating mixing pump P3 comprise a fuel mixing loop. In this embodiment, two fuel mixing loops are provided, and the two fuel mixing loops are respectively provided on both sides of the emulsion mixing tank T3.

In some embodiments, as shown in fig. 1, the viscous water mixing device is connected as a module to a viscous water supply tank T5 of a diesel emulsion fuel preparation system. In other embodiments, the viscous oil water mixing device can also be used as a device to produce viscous oil water independently, and is not connected with a diesel emulsified fuel preparation system.

The viscous oil-water mixing device is shown in fig. 2 and comprises a surfactant supply tank t7, a water supply tank t6, a surfactant measuring cylinder t2, a water agent measuring 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 circulating mixing pump P6.

The inlet of the surfactant measuring cylinder t2 is communicated with the surfactant supply box t7 by a surfactant supply pump P4, and the outlet of the surfactant measuring cylinder t2 is communicated with the aqua agent measuring cylinder t1 by a valve; the bottom of the water agent measuring cylinder t1 is communicated with the bottom of the water supply tank t6 by a water supply pump P5, and the outlet of the water agent measuring cylinder t1 is at least communicated with a feeding pipe assembly FPA positioned in the oil-viscous water mixing tank t3 by a valve.

The second impact mixer M2 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 impact nozzle outlet, the liquid inlet pipe of the second impact mixer M2 is communicated with the funnel-shaped tank bottom of the viscous oil-water mixing tank t3 by means of a second circulating mixing pump P6, and the nozzle outlet and the impact nozzle outlet of the second impact mixer M2 are respectively arranged on the upper part of the viscous oil-water mixing tank t3. And 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, and the two viscous oil-water mixing loops are respectively disposed on two sides of the viscous oil-water mixing tank t3.

In some embodiments, the viscous oil-water mixing device further includes a third impingement mixer M3, the third impingement mixer M3 includes a liquid inlet pipe having a liquid column nozzle outlet, a liquid outlet pipe having a liquid column nozzle outlet, and a liquid outlet pipe having an impingement nozzle outlet, the liquid inlet pipe of the third impingement mixer M3 is communicated with the upper portion of the aqueous measuring cylinder t1 by a third circulation mixing pump P7, and the nozzle outlet and the impingement nozzle outlet of the third impingement mixer M3 are respectively disposed on the upper portion of the viscous oil-water mixing tank t3.

In some embodiments, the upper portion of the aqueous solution measuring cylinder t1 has a filter screen t1A, such as a stainless steel filter screen, and the nozzle outlet and the impingement nozzle outlet of the third impingement mixer M3 are located within the filter screen t1A. And the filter screen t1A, the third impact mixer M3 and the third circulating mixing pump D form an upper circulating system of the water agent measuring cylinder. The upper circulating system can promote the surfactant micelle on the upper part of the water aqua measuring cylinder to be broken. The surfactants enter the filter screen where they are sucked out through an 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 surfactant micelle breakup and the nozzle helps the dispersion of the surfactant micelles. Only micelles small enough can pass through the mesh of the filter screen to no longer participate in the upper circulation, while surfactant micelles larger than the mesh of the filter screen remain in the filter screen to be further split and dispersed.

In some embodiments, the viscous oil-water mixing device further comprises a fourth impingement mixer M4, a circulation transfer pump P8 and an impingement cylinder t5, the fourth impingement mixer M4 comprises, like the other impingement mixers, 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 M4 is connected with the bottom of the aqueous solution measuring cylinder t1 by means of the circulation transfer pump P8, and the nozzle outlet and the impingement nozzle outlet of the fourth impingement mixer M4 are respectively connected with the impingement cylinder t 5; striking section of thick bamboo t5 set up in the upper portion of viscous oil water blending tank, with inlet pipe subassembly FPA's upper end is connected.

In some embodiments, as shown in fig. 2, a liquid column nozzle JN is connected to one side wall of the surfactant dosing cylinder t2, and the liquid coming out of the surfactant dosing cylinder passes through the aqueous solution dosing cylinder t1, the circulation transfer pump P8 and the liquid column nozzle in sequence, and is sprayed to the other side wall of the surfactant dosing cylinder t2 by the liquid column nozzle.

In some embodiments, the second impingement mixer M2 further comprises a drain pipe having a defoaming impingement nozzle AFN disposed at an upper portion of a sidewall of the viscous oil-water mixing tank. The defoaming impingement nozzle is used to maintain sufficient air space above the viscous oil-water mixing tank t3 for optimum mixing, as foam can degrade the performance of the impingement nozzle. In some embodiments, a defoaming vent valve AFV is further disposed on the top of the viscous oil-water mixing tank t3.

In order to keep an air space between the liquid level of the viscous oil-water mixing tank t3 and the tank top, the volume of the viscous oil-water mixing tank t3 is larger than the sum of the volumes of the surfactant dosage cylinder t2 and the aqueous agent dosage cylinder t 1. Similarly, the volume of the emulsion mixing tank T3 is larger than the sum of the volumes of the diesel oil agent measuring cylinder T1 and the viscous oil water measuring and accumulating tank T2, and an air space is kept between the liquid level of the emulsion mixing tank T3 and the tank top.

A floating ball cut-off valve is arranged in each dosage cylinder. The floating ball cut-off valve is convenient for the automatic filling and discharging of each dosage cylinder.

As shown in fig. 8, each impingement mixer includes a chamber 31, an inlet pipe 35, an outlet pipe 32, and an equalization cylinder 34. The liquid inlet pipe is provided with two liquid column nozzle outlets, one of the two liquid outlet pipes is provided with a liquid column nozzle outlet, the other liquid outlet pipe is provided with a balancing cylinder 34, and the balancing cylinder 34 is connected with two impact nozzle outlets. The chamber 31 of the impingement mixer contains an air space 37 inside, in which the outlet of its inlet pipe is located. The inlet of the outlet pipe is near the bottom of the chamber 31 and air is trapped as the liquid level 36 rises. Since the impact force is greater in air than in liquid, the mixing globules are broken up by the air space enhancing jet impact to ensure optimum effect of impact breaking.

The water supply tank t6 is constructed as shown in fig. 6, and includes a cylindrical upper portion 11 and a conical lower portion 12. The side surface of the cylindrical upper part 11 is provided with a positive pressure filtering water inlet 13, and a one-way valve 16 is arranged in the water inlet to prevent backflow; the lower end of the conical lower portion 12 is provided with an outlet 14 in which a ball valve 15 is provided, and the top surface of the cylindrical upper portion 11 is provided with an on/off exhaust valve 17. The water supply tank t6 facilitates automatic loading when connected to a positive pressure supply source, such as a faucet. The on/off exhaust valve 17 is opened manually to exhaust air during loading. As soon as the dose drum is full, the vent valve 17 closes. A check valve at the inlet prevents backflow. The dosage drum will fill automatically when the liquid inside is withdrawn. Water is drawn into the dosing cylinder through the inlet, avoiding the leakage problem that can occur with a float valve.

Each feed tube assembly FPA is shown in fig. 7 and includes a feed tube 21, a height adjuster 22 at an upper end of the feed tube, and a tapered outlet 23 at a lower end of the feed tube. As shown in fig. 4, 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, while the height adjuster 22 is used to adjust the height of the feed pipe. The feed rate can be controlled by varying the gap between the conical outlet 23 and the funnel-shaped bottom of the mixing tank. In some embodiments, as shown in FIG. 5, the feed tube 21 is centrally disposed on the top surface of the mixing tank. The top surface of emulsion blending tank T3 still is provided with the liquid column nozzle JN, striking nozzle IN and the air vent 24 of striking blender.

The tops of the diesel oil agent measuring cylinder T1, the viscous oil water agent measuring cylinder T2, the surfactant agent measuring cylinder T2 and the water agent measuring cylinder T1 are all provided with a ventilation cut-off valve, and when the dosage cylinders are filled, the ventilation cut-off valves close the dosage cylinders. In order to ensure the metering precision, the diesel oil agent measuring cylinder T1, the viscous oil agent measuring cylinder T2, the surfactant agent measuring cylinder T2 and the water agent measuring cylinder T1 are all arranged in a vertical horizontal plane, and the purpose can be realized by utilizing an adjustable mounting bracket. Fig. 9 is a schematic view of the oil-water agent measuring cylinder T2 arranged vertically and horizontally. Assuming the dose cartridge is skewed, as shown in fig. 10, the liquid level 42 has reached the position of a vent shut-off valve, such as a float valve, which has closed the vent of the dose cartridge, i.e. the dose cartridge has been deemed to be filled. However, the triangular area above the vent shut-off valve is actually the air space 43, i.e. it is virtually impossible to fill up the dosage drum when it is tilted, which will affect the metering accuracy. Whereas if the float valve is not completely closed, flooding may occur.

The liquid column nozzle, the impact nozzle and the defoaming nozzle all belong to the prior art, the spraying effect diagrams are respectively shown in fig. 11, fig. 12 and fig. 13, and the specific structure is not repeated herein.

An embodiment of a method for preparing a diesel emulsion fuel, as shown in fig. 1, based on the above diesel emulsion fuel preparation system, includes the following steps:

(1) And opening the viscous oil-water supply pump P2, and starting to fill viscous oil-water into the viscous oil-water agent measuring cylinder T2. When the oil-water agent measuring cylinder T2 is full, a floating ball cut-off valve in the oil-water agent supply pump P2 automatically closes the oil-water agent measuring cylinder.

(2) And opening an outlet valve of the oil-viscous agent measuring cylinder T2, and allowing the oil-viscous water in the oil-viscous agent measuring cylinder T2 to enter an emulsion mixing tank T3 through gravity.

(3) And (3) opening the diesel oil supply pump P1, starting to fill the diesel oil measuring cylinder T1, and automatically closing the diesel oil measuring cylinder T1 by a floating ball cut-off valve.

(4) The outlet valve of the diesel oil measuring cylinder T1 is opened, and the diesel oil from the diesel oil measuring cylinder T1 enters the emulsion mixing tank T3 through gravity.

(5) When the system is started, the first circulating mixing pump P3 is turned on. Mixture in the emulsion blending tank flows out from the funnel-shaped tank bottom of the emulsion blending tank and circulates, and is sprayed into the emulsion blending tank through the nozzle and the impact nozzle of the first impact mixer M1 after being subjected to internal impact mixing of the first impact mixer M1.

(6) After the circulation mixing for a set time, the prepared emulsion fuel in the emulsion mixing tank T3 is discharged through an outlet at the bottom of the emulsion mixing tank T3.

In one embodiment, the specific operation steps of the preparation method of the diesel emulsified fuel are shown in fig. 3:

the first step, start for the first time, the filling supply tank.

1. Turning on a system power supply;

2. opening the valve V6, closing the valve V7, and starting the diesel pump P9 to refuel the diesel supply tank T4;

3. opening the valve V9, closing the valve V8, and starting the viscous oil water pump P10 to fill the viscous oil water supply tank T5;

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

And secondly, starting the mixing system.

1. Valves V7 and V8 are opened and valves V1 and V2 are closed.

2. The diesel oil agent measuring cylinder T1 is filled under the action of a diesel oil supply pump P1, and the viscous oil water agent measuring cylinder T2 is filled under the action of a viscous oil water supply pump P2.

3. When the diesel oil measuring cylinder T1 and the viscous oil water measuring cylinder T2 are full, the diesel oil supply pump P1 and the viscous oil water supply pump P2 are automatically stopped.

4. Valve V5 is closed and valves V3 and V4 are opened.

5. The valve V2 is opened, and the viscous oil water is added into the emulsion mixing tank T3 by gravity.

6. The mixing process is started by the first circulation mixing pump P3.

7. After the loading and mixing time is set, valve V2 is closed, valve V1 is opened and diesel is added by gravity to the emulsion mixing tank T3.

8. Under the action of the first circulating mixing pump P3, the mixture in the emulsion mixing tank flows out from the funnel-shaped tank bottom of the emulsion mixing tank to circulate, and is sprayed into the emulsion mixing tank through a nozzle and an impact nozzle of the first impact mixer M1 after being subjected to impact mixing in the mixing chamber in the first impact mixer M1, so that the diesel oil and the viscous oil water are uniformly mixed to form the standard diesel oil emulsified fuel.

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

1. viscous oil water and diesel oil enter the emulsion mixing tank T3 through gravity, and reliable feeding speed control can be performed by means of optimizing processes such as changing the diameter of an outlet hole in a gravity feeding mode, and cost benefit is facilitated.

2. The impingement mixer M1 is intended to promote "fluid impingement mixing" by injecting a mixture of viscous oil water and diesel fuel against a hard surface of the upper wall of the mixing chamber, such impingement promoting the breaking up of surfactant globules. The entrance to the exit tube of the impingement mixer is near the bottom of the mixing chamber, which traps air in the mixing chamber. The mixing chamber pressure is generated by the difference between the input and output fluid volumes, which is achieved by varying the outlet conduit diameter.

3. The tapered outlet at the lower end of the feed pipe ensures that the diesel fuel is delivered to the bottom of the emulsion mixing tank where it is mixed with the viscous oil and water at the bottom of the tank and then pumped by the circulating mixing pump into the M1 impingement mixer. The feeding speed of viscous oil water can be controlled by adjusting the gap between the funnel-shaped bottom of the emulsion mixing tank T3 and the edge of the tapered outlet of the feeding pipe.

4. The floating ball cut-off valve is convenient for the automatic filling and discharging of the dosage cylinder. The mixing proportion of the diesel oil and the viscous oil water can be accurately and reliably controlled by using the quantitative dosing cylinder.

5. The design of the dosage cylinder is convenient for automatically loading diesel oil from ship fuel supply according to requirements, and is also suitable for the condition that the stirrer is connected to a viscous oil-water mixing device for online operation.

The preparation method of viscous oil water disclosed by the invention is shown in figure 2 and comprises the following steps:

1. a water injection agent measuring cylinder t1 and a surfactant dosage cylinder t2 are added.

Turning on the surfactant supply pumps, i.e., the surfactant supply pump P4 and the water supply pump P5; valve 1 and valve 2 are opened and valve 3 and valve 4 are closed. When the aqua dosage cylinder t1 is full, the water supply pump P5 is automatically turned off by an electrical trip switch. When the surfactant calibration tank t2 is full, the surfactant supply pump P4 is automatically turned off by an electric trip switch.

2. The pre-mixing process of surfactant and water is started.

The circulation transfer pump P8 and the third circulation mixing pump P7 are opened, the valve 3, the valve 4 and the valve 5 are opened, the valve 6 is closed, and the surfactant and the water are premixed.

In some embodiments, during the pre-mixing process, the liquid is sprayed to the other side wall of the surfactant measuring cylinder t2 through the water agent measuring cylinder t1, the circulating transfer pump P8 and the liquid column nozzle arranged on one side wall of the surfactant measuring cylinder t2 in sequence, and is used for washing the surfactant remained on the inner wall of the surfactant measuring cylinder. The proportioning of the surfactant and the water is more accurate.

Meanwhile, during premixing, the liquid in the filter screen t1A on the upper part of the water agent measuring cylinder t1 is sucked out by the third circulating mixing pump P7, passes through the inside of the third impingement mixer M3, and is sprayed into the filter screen t1A through the nozzle and the impingement nozzle of the third impingement mixer M3 to be mixed.

3. And conveying the premixed mixture to a viscous oil-water mixing tank t3.

After the pre-mixing is started, the circulation transmission pump P8 is kept in an open state for a set time such as 10 minutes, and the third circulation mixing pump P7 is closed; the valve 3, the valve 4 and the valve 5 are kept open, and then the valve 6 is opened to deliver the premixed mixture to the viscous oil-water mixing tank t3. The premixed mixture passing through the circulating transfer pump P8 sequentially passes through the fourth impact mixer M4, the impact cylinder t5 and the feeding pipe assembly FPA to enter the funnel-shaped tank bottom of the viscous oil-water mixing tank t3. The premixed mixture is further mixed by a fourth impingement mixer M4 and an impingement cylinder t5 before entering the feed tube assembly, and a liquid column nozzle JN of the fourth impingement mixer M4 is injected toward the sidewall of the impingement cylinder, and an impingement nozzle IN thereof is injected downward from the top of the impingement cylinder t 5.

Meanwhile, a defoaming impact nozzle AFN of the fourth impact mixer M4 is sprayed from one side wall of the viscous oil-water mixing tank for eliminating excessive foam in the mixed liquid.

After the transmission process is started, a certain time period, such as 10 minutes (the time period can be adjusted), or according to the sensing information of the pressure sensor in the viscous oil-water mixing tank t3, the circulating transmission pump P8 is closed, the valve 3, the valve 4 and the valve 6 are closed, and the premixed mixture is stopped being conveyed to the viscous oil-water mixing tank t3.

4. Mixing circulation of opening oil-viscous water mixing tank t3

And opening a second circulating mixing pump P6, opening a valve 7, closing a valve 8, opening the mixing circulation of the viscous oil-water mixing tank t3 under the action of the second circulating mixing pump P6, enabling the mixture in the viscous oil-water mixing tank t3 to flow out of the funnel-shaped tank bottom of the viscous oil-water mixing tank t3, and spraying the mixture into the viscous oil-water mixing tank t3 through a nozzle and an impact nozzle of a second impact mixer M2 after the mixture is subjected to impact mixing in the second impact mixer M2. The cycle will continue to run for a predetermined time, such as 15 minutes.

5. Transferring the prepared viscous oil water to a viscous oil water tank t4

And the second circulating mixing pump P6 is kept in an open state, the valve 8 is opened, the valve 7 is closed, and the prepared viscous oil water is transferred to the viscous oil water tank t4.

As shown in fig. 2, the viscous oil-water mixing device of the present invention:

1. premixing the surfactant and water circulates the mixture through nozzles located in the wall of the surfactant dosing tank t2, helping to remove residual surfactant adhering to the wall of the surfactant dosing tank t2, ensuring the accuracy of the dosing. Residual surfactant adhering to the t2 wall indicates that the surfactant is not used, which will negatively affect the mixing ratio of surfactant and water.

2. The calibration water dosage tank t1 has an upper circulation system to promote surfactant pellet breakage. The surfactants enter the metal filter screen t1A where they are sucked out through an outlet pipe connected to the third circulating mixing pump P7, circulated through the third impingement mixer M3, and then re-enter t1A through the nozzle. The third impingement mixer M3 promotes the surfactant micelle breakup and the nozzle helps the dispersion of the surfactant micelles. Only small micelles and water can pass through the metal mesh.

3. Because of the nature of the hydrophilic oil-water surfactant, the separate preparation of viscous oil-water is advantageous for the production of water-in-oil emulsions. Only the oil-coated water droplets enter the hot combustion chamber, and the required secondary atomization occurs.

4. The adjustable height controlled feed pipe assembly FPA delivers the mixture of emulsifier and water containing surfactant micelles directly to the bottom of t3 where they are immediately sucked by the second recirculating mixing pump P6 and transferred to the second impingement mixer M2 where the mixture is sprayed onto a hard surface at the top of the mixer to break up the micelle globules. The mixture leaves the second impingement mixer M2 through the impingement nozzles and the injection nozzles into t3 to further reduce the micellar particles. This method subjects all micelles to high impact forces. It is more efficient than conventional high shear mixing agitators, where it is difficult to ensure that the full load of micelles is chopped. This procedure optimizes the use of the surfactant.

The operation principle and mechanism of the invention are as follows:

1. oil and water surfactants form micelles (globules) when contacted with oil or water.

2. The present invention uses impact forces to break up these pellets.

3. Since the impact force is greater in air than in liquid, an air space is formed to ensure optimum effect.

4. The mixing tank is designed to have a capacity greater than the total capacity of two dosage cylinders containing different materials to create an air space between the liquid level and the top of the tank. The air space above the mix tank liquid level enhances the performance of the impingement nozzles located at the top of the tank.

5. A de-foaming nozzle located in the air space below the impingement nozzle is used to maintain sufficient air space for optimal mixing, as foam can reduce the performance of the impingement nozzle.

6. The impingement mixer is designed to create an air space within the tank to enhance jet impingement to break up the pellets. The inlet of the output pipe is near the bottom of the impingement mixer. As the liquid level rises, air is trapped inside.

7. The calibration dosage tank is accurate and reliable. They also help to size the mixing tank to provide a space between the liquid level and the tank top.

8. The float drain/shut off valve facilitates calibration of the automatic filling/draining of the feed tank.

The production of a modular diesel emulsion fuel preparation system eliminates the transportation cost of water due to the wide availability of tap water. The cost can be further reduced by placing the diesel emulsion fuel preparation system near a service station. The modular system allows participating petroleum suppliers to size their diesel emulsion fuel preparation system plants according to the needs of each region.

The invention can provide a cost-effective diesel emulsified fuel preparation system for an engine manufacturer, and can reduce carbon emission, nitrogen oxides, hydrocarbons, carbon monoxide, particulate matters and other pollutants. A second object is to provide a method for efficiently producing and distributing emulsified diesel for petroleum suppliers. The problem that the dispersed phase of the diesel emulsified fuel is settled downwards is solved, so that the uniformity of the fuel is ensured. The diesel emulsion fuel preparation system can be arranged near a gas station, and can utilize the local existing diesel and tap water supply, thereby reducing the logistics cost.

It should be understood that the above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and such modifications and substitutions should be considered to fall within the scope of the appended claims.

Claims

1. The viscous oil water preparation device is characterized in that: comprises a surfactant supply tank, a water supply tank, a surfactant measuring cylinder, a water agent measuring cylinder, a viscous oil-water mixing tank and a second impact mixer;

the inlet of the surfactant measuring cylinder is communicated with the surfactant supply tank by a surfactant supply pump, and the outlet of the surfactant measuring cylinder is communicated with the aqueous measuring cylinder by a valve; the bottom of the aqueous measuring cylinder is connected with the bottom of the water supply tank by a water supply pump, and the outlet of the aqueous measuring cylinder is at least communicated with a feed pipe component which is positioned in the viscous oil-water mixing tank and can directly feed the feed into the lower part of the viscous oil-water mixing tank through a valve;

the second impact 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 impact nozzle outlet, the liquid inlet pipe of the second impact mixer is communicated with the bottom of the viscous oil-water mixing tank by a second circulating mixing pump, and the nozzle outlet and the impact nozzle outlet of the second impact mixer are respectively arranged in the air space of the viscous oil-water mixing tank;

the volume ratio of the surfactant measuring cylinder and the aqueous solution measuring cylinder is equal to the set proportion of the surfactant and the water contained in the viscous oil water to be prepared, and the sum of the volumes of the surfactant measuring cylinder and the aqueous solution measuring cylinder is less than the volume of the viscous oil water mixing tank.

2. The viscous oil-water preparation device according to claim 1, characterized in that: the third impact 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 impact nozzle outlet, the liquid inlet pipe of the third impact mixer is communicated with the upper part of the aqueous measuring cylinder by a third circulating mixing pump, and the nozzle outlet and the impact nozzle outlet of the third impact mixer are respectively arranged in an air space at the upper part of the aqueous measuring cylinder.

3. The viscous oil-water preparation device according to claim 2, characterized in that: the upper part of the water agent measuring cylinder is provided with a filter screen, and the nozzle outlet and the impact nozzle outlet of the third impact mixer are positioned above the filter screen.

4. The viscous oil-water mixing device according to claim 1, wherein: one side wall of the surfactant measuring cylinder is connected with a liquid column nozzle, and liquid from the surfactant measuring cylinder sequentially passes through the water aqua measuring cylinder, the circulating transmission pump and the liquid column nozzle and is sprayed to the other side wall of the surfactant measuring cylinder by the liquid column nozzle.

5. The viscous oil-water preparation device according to claim 1, characterized in that: the fourth impact 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 impact nozzle outlet, the liquid inlet pipe of the fourth impact mixer is connected with the bottom of the water aqua measuring cylinder by virtue of the circulation transmission pump, the liquid column nozzle outlet of the fourth impact mixer is connected with one side wall of the impact cylinder, and the impact nozzle outlet of the fourth impact mixer is connected with the top of the impact cylinder; the striking cylinder is arranged on the upper part of the viscous oil-water mixing tank and is connected with the upper end of the feeding pipe component.

6. The viscous oil-water preparation device according to claim 1, characterized in that: the second impact mixer also comprises an impact nozzle for defoaming, and the impact nozzle for defoaming is arranged on the upper part of one side wall of the viscous oil-water mixing tank.

7. The viscous oil-water preparation device according to claim 1, characterized in that: an air space is kept in the impact mixer, the outlet of the liquid inlet pipe of the impact mixer is positioned in the air space, and the inlet of the liquid outlet pipe of the impact mixer is close to the bottom of the impact mixer.

8. The viscous oil-water preparation device according to claim 1, characterized in that: the feed tube assembly includes a feed tube, a height adjuster at an upper end of the feed tube, and a tapered outlet at a lower end of the feed tube.

9. The viscous oil-water preparation device according to claim 1, characterized in that: the surfactant measuring cylinder and the water aqua measuring cylinder are both arranged vertical to the horizontal plane.

10. A viscous oil-water production method based on the viscous oil-water production apparatus according to any one of claims 1 to 9, characterized in that: mixing a surfactant with water to form viscous oil water comprises the following steps:

A. the surfactant supply pump is turned on, the surfactant dosing cylinder is filled with the surfactant from the surfactant supply tank, and when the surfactant dosing cylinder is full, the surfactant supply pump is turned off;

E. opening a mixing cycle of the viscous oil-water mixing tank under the action of a second circulating mixing pump, wherein a mixture in the viscous oil-water mixing tank flows out of the funnel-shaped tank bottom of the viscous oil-water mixing tank, is subjected to impact mixing in a second impact mixer, and is sprayed into the viscous oil-water mixing tank through a nozzle and an impact nozzle of the second impact mixer;

11. The method for preparing viscous oil according to claim 10, wherein: and the liquid from the water agent measuring cylinder sequentially passes through a circulating transmission pump and the liquid column nozzle, is sprayed to the other side wall of the surfactant measuring cylinder by the liquid column nozzle, and is used for washing the surfactant remained on the inner wall of the surfactant measuring cylinder.

12. The method for preparing viscous oil water according to claim 11, wherein the premixing of the surfactant and the water in the step C is: and liquid in the filter screen on the upper part of the water agent measuring cylinder is pumped out by the third circulating mixing pump, passes through the inside of the third impingement mixer and is sprayed into the filter screen through the nozzle and the impingement nozzle of the third impingement mixer.

13. The method for preparing viscous oil-water according to claim 11, wherein: in the step D, the premixed mixture is further mixed by a fourth impact mixer and an impact barrel before entering the feeding pipe assembly, a liquid column nozzle outlet of the fourth impact mixer sprays to the side wall of the impact barrel, and an impact nozzle of the fourth impact mixer sprays downwards from the top of the impact barrel.

14. The method for preparing viscous oil-water according to claim 13, wherein: and an impact nozzle for defoaming of the fourth impact mixer is sprayed from one side wall of the viscous oil-water mixing tank and is used for eliminating excessive foam in the mixed liquid.

15. The utility model provides a diesel oil emulsified fuel prepares system, includes diesel oil supply tank, viscous oil water supply tank, emulsion blending tank, its characterized in that still includes: the viscous oil-water mixing device according to any one of claims 1 to 9 connected to a viscous oil-water supply tank for mixing water with a surfactant; and

the inlet of the diesel oil measuring cylinder is communicated with the diesel oil supply tank by a diesel oil supply pump, and the outlet of the diesel oil measuring cylinder is communicated with a feed pipe assembly positioned in the emulsion mixing tank by a valve;

the inlet of the viscous oil-water agent measuring cylinder is communicated with the viscous oil-water supply tank by a viscous oil-water supply pump, and the outlet of the viscous oil-water agent measuring cylinder is communicated with a feed pipe component which is positioned in the emulsion mixing tank and can directly feed the feed into the lower part of the emulsion mixing tank through a valve;

a first impingement mixer comprising 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 being in communication with the funnel-shaped tank bottom of the emulsion mixing tank by means of a first circulating mixing pump, the liquid column nozzle outlet and the impingement nozzle outlet of the first impingement mixer being arranged in the air space of the emulsion mixing tank, respectively;

16. The diesel emulsion fuel preparation system of claim 15, wherein: the inlet pipe subassembly of emulsion blending tank includes the inlet pipe, is located the altitude controller of this inlet pipe upper end and is located the toper export of this inlet pipe lower extreme, and this toper export is close to the infundibulate tank bottoms of emulsion blending tank, viscous oil water agent graduated flask in viscous oil water agent and diesel oil in the diesel oil agent graduated flask pass through the inlet pipe subassembly is carried to the bottom of emulsion blending tank always.

17. The diesel emulsion fuel preparation system of claim 15, wherein: floating ball cut-off valves are arranged in the diesel oil agent measuring cylinder and the oil-viscous agent measuring cylinder.

18. The system for preparing a diesel emulsion fuel as set forth in claim 15, wherein: the first impingement mixer has an air space maintained therein, an outlet of its inlet pipe being located in its air space and an inlet of its outlet pipe being located near the bottom of the impingement mixer.

19. The diesel emulsion fuel preparation system of claim 15, wherein: the diesel oil agent measuring cylinder and the oil-water agent measuring cylinder are both arranged vertical to the horizontal plane.

20. A method for preparing a diesel emulsified fuel, based on the system for preparing a diesel emulsified fuel as set forth in claim 13, comprising mixing a surfactant with water to form a viscous oil solution, and mixing the viscous oil solution with diesel to form an emulsified fuel,

mixing a surfactant with water to form a viscous oil water comprises the following steps:

21. The method for producing a diesel emulsion fuel according to claim 20, characterized in that: the gap between the funnel-shaped tank bottom of the emulsion mixing tank and the edge of the tapered outlet of the feeding pipe assembly is adjusted by adjusting the height of the feeding pipe, so that the feeding speed of the viscous oil water is controlled.

22. The method for producing a diesel emulsion fuel according to claim 20, characterized in that: and (4) controlling the diesel feeding speed of the diesel measuring cylinder in the step (4) through the diameter of an outlet pipe at the lower part of the diesel measuring cylinder.

23. The method for producing a diesel emulsion fuel as set forth in claim 20, wherein: when the surfactant and water are mixed to form viscous oil water, the liquid from the water agent measuring cylinder sequentially passes through the circulating transmission pump and the liquid column nozzle, and is sprayed to the other side wall of the surfactant measuring cylinder through the liquid column nozzle to wash the surfactant remained on the inner wall of the surfactant measuring cylinder.

24. The method for preparing a diesel emulsified fuel as set forth in claim 20, wherein the premixing of the surfactant and the water in the step C is: and liquid in the filter screen on the upper part of the water agent measuring cylinder is pumped out by the third circulating mixing pump, passes through the inside of the third impingement mixer and is sprayed into the filter screen through the nozzle and the impingement nozzle of the third impingement mixer.

25. The method for producing a diesel emulsion fuel according to claim 20, characterized in that: in the step D, the premixed mixture is further mixed by a fourth impact mixer and an impact barrel before entering the feeding pipe assembly, a liquid column nozzle outlet of the fourth impact mixer sprays to the side wall of the impact barrel, and an impact nozzle of the fourth impact mixer sprays downwards from the top of the impact barrel.

26. The method for producing a diesel emulsion fuel as set forth in claim 20, wherein: when the surfactant and the water are mixed to form viscous oil water, the defoaming impact nozzle of the fourth impact mixer is sprayed from one side wall of the viscous oil water mixing tank to eliminate excessive foam in the mixed liquid.