KR100917898B1 - Atomization apparatus and liquid fuel combustion system with the same - Google Patents

Abstract

An atomization apparatus and a liquid fuel combustion system with the same are provided to vary the processing capacity according to the given conditions. An atomization apparatus comprises a processing chamber(311), a casing with an inlet(312) and an outlet(313), a stator(340) provided along the circumference of the processing chamber, a rotator arranged inside the stator to form a flow path(S) between with the stator and atomizing liquid passing through the flow path together with the stator, a shaft(360) on which the rotor is installed, and a shaft driving unit rotating the shaft. The rotor is composed of three unit rotors(350a~350d), the stator is composed of a plurality of unit stators(340a~340d), and the casing is composed of a plurality of mutually detachable unit casings(310a~310d). The processing capacity of the apparatus is changed by varying the numbers of the unit casings, the unit stators, and the unit rotors.

Description

Atomization apparatus and liquid fuel combustion system with the same

The present invention relates to an atomizing device for use in the atomization of a liquid (hereinafter comprising a viscous liquid material) and a liquid fuel combustion system comprising the device.

In general, liquid petroleum product refined crude oil such as light oil, kerosene, heavy oil, gasoline is finely mixed with air during combustion to improve combustion efficiency. Accordingly, the liquid fuel combustion system that is recently released is to apply the atomization device used for the atomization of the liquid to use the petroleum product fuel of the atomized liquid as fuel.

On the other hand, in recent years, one of the liquid fuels of considerable interest is emulsified fuel which is known to be beneficial in terms of energy saving and environmental. Emulsified fuel refers to emulsification of a mixture of liquid petroleum fuel and water. Among them, water in oil (W / O) having a water addition ratio of 30% or less for liquid petroleum fuel Say the type. An atomizer is also used to prepare an emulsion including such an emulsified fuel. The atomizer uniformly disperses another liquid which is not mixed with it in a particulate state in a liquid state.

However, in the present atomization device, the technology level is relatively low, so that it is impossible to achieve satisfactory results. Therefore, there is an urgent need for improvement and provision of supplementary measures.

SUMMARY OF THE INVENTION An object of the present invention is to provide an atomizing apparatus for more effectively atomizing a liquid and a liquid fuel combustion system comprising the same.

According to an embodiment of the present invention, there is provided a processing chamber comprising: a casing having an inlet and an outlet communicating with both sides of the processing chamber; A stator provided along a circumference of the processing chamber; A rotor disposed concentrically in the stator so that a flow path is formed between the stator, and a pair of particles that flow into the inlet and pass through the flow path in pairs with the stator to form fine particles; A shaft provided with the rotor; And a shaft driving means for rotating the shaft, wherein the rotor is composed of at least three unit rotors detachably coupled to the shaft, and the stator includes a plurality of unit stators corresponding to each of the unit rotors. The casing is provided with an atomization device, each of which is provided with the unit stator, and composed of a plurality of unit casings detachable from each other.

At least one of the unit rotors may be different in size from other outer circumferences, and may be arranged in the order of the smallest outer circumference from the liquid inlet side to the shaft. According to this, a jaw is formed on the flow path. Preferably, the unit rotors are different in size from the outer circumference thereof.

Here, the flow path may have a structure that gradually decreases from the liquid inlet side to the outlet side. In addition, each of the rotor and the stator to be paired with each other may be formed so that the opposite portion has an uneven structure.

The atomization apparatus according to the embodiment of the present invention may further include an impeller provided at the inlet side of the processing chamber.

According to an embodiment of the present invention, there is provided a processing chamber comprising: a casing having an inlet and an outlet communicating with both sides of the processing chamber; A stator provided along a circumference of the processing chamber; A rotor disposed concentrically in the stator so as to form a flow path between the stator, and a particle flowing into the inlet and passing through the flow path in pairs with the stator to form fine particles; A shaft provided with the rotor; And a shaft driving means for rotating the shaft, wherein the rotor has a staircase structure extending from a liquid inflow side to an outflow side to have at least one layer to form a jaw on the flow path, and the stator includes the An atomizer may be provided that is configured to have a stepped structure corresponding to the rotor.

According to an embodiment of the present invention, the fuel tank in which the liquid petroleum product fuel is stored; A water supply device for supplying water; An atomization device as described above for supplying liquid petroleum product fuel from at least a fuel tank of said fuel tank and a water supply device to atomize it; Provided is a liquid fuel combustion system comprising a combustion device receiving and combusting liquid fuel from the atomization device.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention. For reference, in describing the present invention, the size of the components shown in the accompanying drawings, the thickness of the line, and the like may be exaggerated for convenience of understanding. In addition, since terms used in the description of the present invention are defined in consideration of functions in the present invention, they may be changed according to intentions of users, operators, and the like. Therefore, the definitions of terms should be made based on the contents throughout this specification.

1 is a block diagram showing a liquid fuel combustion system according to the present invention. As shown in FIG. 1, the liquid fuel combustion system includes a fuel tank (see reference numerals 110 and 120) for storing liquid petroleum product fuel, a water tank 200 for storing water, and a fuel tank and a water tank 200. Atomization device (300), which is supplied with liquid petroleum product fuel from a fuel tank to produce fine particles or supplied with petroleum product fuel and water from both, to produce W / O type emulsion fuel, and the atomization device (300). It includes a boiler 400 for receiving the liquid fuel (liquid petroleum product fuel or emulsion fuel) from the combustion.

The liquid fuel combustion system includes a heavy oil tank 110 and a diesel oil tank 120 as a fuel tank. Heavy oil and light oil is transported along the fuel transport pipe connecting the heavy oil tank 110 and the light oil tank 120 and the atomization device 300 is supplied to the atomization device (300). Fuel transport pipe is a main pipe (611) connected to the atomization device 300, branched off from the main pipe 611 into a branch pipe (branch pipe) connected to the heavy oil tank 110 and the diesel fuel tank 120, respectively. 612a and 612b. Branch valves 612a and 612b are provided with on / off valves 710a and 710b, respectively, and pumps may be installed respectively if necessary. For reference, heavy oil is usually used, and light oil is used when extinguishing the boiler 400, and then changed from heavy oil to light oil to extinguish.

The water tank 200 is connected to the water source (water supply) by the water supply pipe 621 to receive water, and is connected to the atomization device 300 by the water transport pipe 622 to supply water to the atomization device 300. . The water supply pipe 621 is provided with an on-off valve 720, the water transport pipe 622 is provided with a water pump 810.

2 is a cross-sectional view illustrating the atomization apparatus 300 illustrated in FIG. 1, FIG. 3 is an enlarged view of a portion A of FIG. 2, and FIG. 4 is a cross-sectional view taken along the line B-B of FIG. 3. The atomization apparatus 300 is to rapidly produce a stable emulsion fuel in which water is injected in the form of microparticles in the liquid petroleum product fuel or ultra-fine petroleum product fuel, and immediately supply the boiler 400 continuously. That is, the atomizing device 300 is a device for reducing or suppressing the emission of air pollutants by promoting or assisting the combustion of fuel by means of a combustion auxiliary device (an emulsification method, etc.) which is an air pollution prevention facility, and the environment part It serves as a standard (tested by the Ministry of Environment, 2001-35), and its use is highly recommended. As shown in FIGS. 2 to 4, the atomization apparatus 300 includes a casing 310 having a processing chamber 311, a raw material (liquid petroleum product fuel, or liquid petroleum product liquid) to be treated in the processing chamber 311. And an impeller 330 for primary granulation (preliminary treatment), and an atomization unit for secondary granulation (full-scale treatment) of the raw material processed primarily in the processing chamber 311.

The casing 310 is formed long left and right, and the processing chamber 311 is provided in the casing 310 along the longitudinal direction. On the left and right sides of the casing 310, an inlet 312 and an outlet 313 connected to each other through the processing chamber 311 are formed. The raw material inlet 320 is connected to the inlet 312 in which the raw material is introduced. The raw material transport pipe 320 is an approximately U-shaped tube formed by the trunk line and the branch line divided into two branches from the trunk line, and the trunk line is the joining tube, and the branch line is the branch tube. The joining tube is connected to the inlet 312, the branch tube is connected to the main pipe 611 and the water transport pipe 622 of the fuel transport pipe, respectively. The outlet 313 through which the liquid fuel flows out is connected to the boiler 400 by the liquid fuel transport pipe 630.

The impeller 330 is disposed at the inlet 312 side of the processing chamber 311, where a complicated, irregular, and rapid flow is generated (that is, the primary granulation of the raw material effectively proceeds) and the like. It is desirable to apply this optimization.

The atomization unit includes a stator 340, a rotor 350, and a rotor rotating means for rotating the rotor 350. The rotor 350 is disposed in the processing chamber 311, and the stator 340 is the rotor 350. Are arranged concentrically at regular intervals. The stator 340 functioning as the stator blade is provided along the circumference of the processing chamber 311, and the rotor 350 functioning as the rotary blade has the stator 340 such that a flow path S is formed between the stator 340 and the stator 340. Is placed inside. The stator 340 and the rotor 350 are paired with each other to granulate the raw material passing through the flow path (S). The rotor rotating means includes a shaft 360 and shaft drive means for rotating the shaft 360. The shaft 360 penetrates through the casing 310 so that one side thereof is located in the processing chamber 311, and the rotor 350 is installed at a portion of the shaft 360 positioned in the processing chamber 311. The shaft drive means includes a motor 370, which is connected to the other end of the shaft 360 by a coupling or the like.

The atomization device 300 as described above is configured to have a prefabricated structure that can change the raw material processing capacity.

To this end, the rotor 350 is composed of a first rotor 350a, a second rotor 350b, a third rotor 350c, and a fourth rotor 350d which are unit rotors. The first to fourth rotors 350a to 350d are in close contact with each other on the shaft 360 and coupled to each other by a key. The first rotor 350a is disposed on the inlet 312 side, and the fourth rotor 350d is disposed on the outlet 323 side, and the second and third rotors 350a and 350d are disposed between the first and fourth rotors 350a and 350d. Three rotors 350b and 350c are sequentially arranged. The second rotor 350b is larger than the first rotor 350a, the third rotor 350c is larger than the second rotor 350b, and the fourth rotor 350d is larger than the third rotor 350c. It is formed to. According to this, the rotor 350 has a stepped structure extending from the inlet 312 to the outlet 313 when viewed as a whole, and forms a jaw on the flow path S. FIG.

The stator 340 is a first stator 340a, a second stator 340b, a third stator 340c, and a fourth, which are unit stator pairs corresponding to the first to fourth rotors 350a to 350d, respectively. It consists of the stator 340d.

In addition, the casing 310 is a first casing 310a, a second casing 310b, a third casing 310c and a fourth casing (ie, a unit casing in which the first to fourth stators 340a to 340d are provided). 310d). An inlet 312 is formed in the first casing 310a, and an outlet 313 is formed in the fourth casing 310d. The first to fourth casing (310a ~ 310d) is connected to each other, each unit casing is provided with a flange on the outside so as to be located in a portion facing the neighboring unit casing is tightly fastened together by bolts, nuts. Sealing members R, such as O-rings, are interposed between the unit casings (the opposing portions) adjacent to each other so that the outflow of the raw material through the gap therebetween is prevented. Each unit casing may be integral with each unit stator.

The atomization apparatus 300 is configured to have a structure in which the flow path S gradually decreases from the inlet 312 toward the outlet 313, so that the processing chamber 311 and the stator 340 may have a rotor 350. ) Has a corresponding staircase structure.

Each unit stator and unit rotor paired with each other have concave-convex structures at opposing portions. That is, each unit stator has a plurality of grooves 341 formed in the circumferential direction thereof, and each unit rotor has a plurality of grooves 351 formed in the circumferential direction thereof.

On the other hand, the impeller 330 is mounted so as to be detachable to one end of the shaft 360, and rotates together with the shaft 360 to pre-process, such as mixing the raw materials, while forcibly flowing in and out.

Boiler 400 is the boiler body 410, the fuel supply unit 420, which receives the liquid fuel from the atomizing device 300 by the liquid fuel transport pipe 630, the liquid fuel supplied from the fuel supply unit 420 A burner 430 for burning the gas, a blower 440 for providing combustion air, and a stack 450 for exhausting exhaust gas generated during the combustion process. Since the configuration of the boiler 400 is already widely known, a detailed description thereof will be omitted.

The liquid fuel combustion system further includes a water supply control device for adjusting the amount of water supplied from the water tank 200 to the atomization device 300. The water supply control device is used to manufacture the emulsified fuel by the atomization device 300, the amount of water supplied to the atomization device 300 according to the amount of air pollutants contained in the exhaust gas from the boiler 400 Adjust

The water supply control device sets the amount of air pollutants (air pollutant emissions) contained in the exhaust gas discharged from the stack 450 to the set value (ex: the atmosphere when the ratio of adding water to the liquid petroleum fuel is optimal. When the amount of water supplied to the atomization device 300 is increased if the amount of pollutants is exceeded, on the contrary, if the amount of air pollutant emission is less than or equal to the set value, the amount of water supplied to the atomization device 300 is reduced. Play a role. In other words, the emission of air pollutants out of the set value means that the combustion condition is poor because the ratio of water to liquid petroleum product fuel is not optimal. The ratio of water to fuel is maintained optimally. At this time, the water supply amount, that is, the ratio of the addition of water to the liquid petroleum fuel is preferably 30% or less, as mentioned above, the water supply is increased or decreased within this range.

The water supply control device is installed on the stack 450 to measure the air pollutant emissions, the air pollutant measuring sensor (not shown), the amount of water flowing along the water transport pipe 622 is installed on the water transport pipe 622 Flow control valve for adjusting the flow rate 520, by comparing the measured value input from the air pollutant measuring sensor with the set value, if the measured value exceeds the set value flow rate adjustment to increase the amount of water flowing along the water transport pipe 622 And a control unit 530 which opens the valve 520 and closes the flow control valve 520 so that the amount of water flowing along the water transport pipe 622 is reduced when the measured value is less than or equal to the set value.

The air pollutant measuring sensor is composed of one or more of a dust sensor, a carbon monoxide (CO) sensor, a nitrogen oxide (NOx) sensor, and a sulfur oxide sensor. In addition, the outside of the stack 450 may further include an oxygen sensor for measuring the amount of oxygen (O2) discharged from. Higher oxygen emissions mean poor combustion. As the flow control valve 520, a solenoid valve was applied.

Reference numerals 381 and 385 not described above are first and second locking means for preventing the rotor 350 from moving along the shaft 360. A bushing is applied to the first locking means 381. The bushing is fitted to the shaft 360 so as to be interposed between the impeller 330 and the first rotor 350a so that the rotor 350 is moved toward the inlet 312 side. To prevent them. The second locking means 385 is mounted to the shaft 360 so as to be interposed between the fourth casing 310d and the fourth rotor 350d so that the rotor 350 is moved from the inlet 312 to the outlet 313. prevent. The bushing may also be applied to the second locking means 385, but here the first member supported by the fourth rotor 350d, the second member supported by the fourth casing 310d, the second member and the first Including the elastic member interposed between the members, the rotor 350 was elastically supported.

According to such a lot means, a key for detachably coupling the first to fourth rotors 350a to 350d to the shaft 360 simultaneously rotates the rotor 350 together with the shaft 360 and simultaneously causes the shaft to rotate. It is desirable to apply a type that can be moved in the direction.

In the following, we will look at the case of using the emulsified fuel as a liquid fuel during the operation of the present invention.

The branch pipe 612b connecting the diesel oil tank 110 and the main pipe 611 during operation is completely closed by the on / off valve 710b, and the branch pipe 612a connecting the heavy oil tank 120 and the main pipe 611 and The water transport pipe 622 remains open. Therefore, the heavy oil is introduced into the raw material transport pipe 320 along the branch pipe 612a, the main pipe 611, the water is introduced into the raw material transport pipe 320 along the water transport pipe 622, the heavy oil and water are joined. do.

The combined raw materials are introduced into the processing chamber 311 through the inlet 312, and are mixed by the action of the impeller 330 rotating at high speed together with the shaft 360 in the processing chamber 311. At this time, the raw material is first made into fine particles.

Thereafter, the raw material is introduced into the flow path S, and is transferred to the outlet 313 through the flow path S. In this process, the stator 340 and the rotor 350 rotating at high speed are repeatedly stirred and sheared. And repeatedly hit the jaw formed on the flow path S by the grooves 341 and 351 formed in the stator 340 and the rotor 350 and the rotor 350 having a staircase structure, and the flow path S is the inlet 312. In the middle of being gradually compressed by shrinking toward the outlet 313 side in the repeat the natural expansion by the grooves in the stator 340 and the rotor 350 is repeatedly made, secondary granulation is made. At this time, the raw material is refined by stirring, shearing, and impacting to become a state of ultra fine particles, and the density is increased by compression and expansion, and water is stably dispersed in heavy oil. That is, the raw materials are effectively atomized and mixed by such a complex action to form a stable W / O type emulsion fuel without adding an emulsifier.

Emulsified fuel flowing out of the processing chamber 311 through the outlet 313 flows along the emulsified fuel transport pipe 630 is supplied to the boiler 400, is burned in the boiler 400, the exhaust gas generated in the combustion process is a stack Discharged to 450.

The air pollutant measuring sensor of the water supply control device measures the air pollutant emissions contained in the exhaust gas discharged from the stack 450, and outputs the measured value to the control unit 530. The control unit 530 receives the measured value and compares the measured value with the set value. When the measured value exceeds the set value, the control unit 530 determines that a large amount of air pollutant is generated due to a poor combustion state, and outputs a control signal. The flow rate control valve 520 is operated to increase the pipe opening degree of the water transport pipe 622. Therefore, the amount of water flowing into the raw material transport pipe 320 is increased, the ratio of the addition of water to the heavy oil is increased, the combustion state is better. On the other hand, even when the measured value is less than the set value outputs a control signal, the flow control valve 520 is operated to reduce the pipe opening degree of the water transport pipe 622.

Since the atomization device 300 is prefabricated, its processing capacity can be changed. 5 shows an example of this, in which the first casing 310a is separated from the second casing 310b and the second casing 310b is separated from the third casing 310c (at this time, the first casing 310a). The second stator 340a and 340b are also separated), the impeller 330, the bushing which is the first locking means 381, the first rotor 350a, and the second rotor 350b sequentially from the shaft 360. After separation, the first rotor 350a, the bushing, and the impeller 330 are sequentially coupled to the shaft 360, and the first casing 310a is fastened to the third casing 310c to reduce the processing capacity. Indicates. The bushings were then replaced with longer ones to compensate for the reduced length of the device.

Meanwhile, an additional unit casing and a unit rotor are further provided, and a unit casing is added between the first casing 310a and the fourth casing 310d, and the unit rotor is disposed between the first rotor 350a and the fourth rotor 350d. You can also increase the throughput by adding. In this case, the shaft 360 may be replaced with a longer length.

According to such a structure, the present invention can be variously modified to suit the given conditions, such as processing target, processing environment, the processing capacity of the atomization device 300.

6 is a cross-sectional view showing a main part of a liquid fuel combustion system according to a second embodiment of the present invention. As shown here, the liquid fuel combustion system according to the second embodiment of the present invention is compared with that of the first embodiment. For the sake of simplicity, only some of the components of the atomization apparatus 300 are slightly different, while all other configurations are the same.

That is, the second embodiment further includes a bearing 390 for supporting the shaft 360 at the inlet 312 side, the bearing 390 is located between the impeller 330 and the first rotor 350a And the outer circumference in this state is supported by the first casing 310a, so that the bushing which is the first locking means 381 is interposed between the bearing 390 and the first rotor 350a.

In the second embodiment, a plurality of orifices 314 are provided in the first casing 310a. The orifice 314 serves to spatially connect the processing chamber 311 partitioned by the bearing 390 into the inlet 312 side and the outlet 313 side. The inlet of the orifice 314 is located on the inlet 312 side with respect to the bearing 390, and the outlet of the orifice 314 is located on the outlet 313 side with respect to the bearing 390. In addition, the orifice 314 is formed in a shape that is reduced in size from the inlet to the outlet so that the raw material introduced therein is naturally compressed and expanded naturally after passing.

FIG. 7 shows a state in which the processing capacity of the atomization device 300 of the second embodiment is changed so as to reduce the processing capacity. The processing capacity is reduced by replacing the shaft 360 with a shorter length.

The present invention has been described above, but the present invention is not limited to the embodiments disclosed in the specification and the accompanying drawings, and may be variously modified by those skilled in the art without departing from the technical spirit of the present invention.

For example, although the rotor 350 has been described as being composed of four unit rotors (first to fourth rotors), the number of unit rotors may be three or five or more. Of course, the same applies to the unit casing constituting the casing 310 and the unit stator constituting the stator 340.

1 is a block diagram showing a liquid fuel combustion system according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the atomization apparatus illustrated in FIG. 1.

3 is an enlarged view of a portion A of FIG. 2.

4 is a cross-sectional view taken along line B-B of FIG. 3.

FIG. 5 is a cross-sectional view illustrating a state in which a processing capacity of the atomization apparatus illustrated in FIG. 1 is changed.

6 is a sectional view showing a main part of a liquid fuel combustion system according to a second embodiment of the present invention.

FIG. 7 is a cross-sectional view illustrating a state in which a processing capacity of the atomization apparatus illustrated in FIG. 6 is changed.

<Explanation of symbols on main parts of the drawings>

110: heavy oil tank 120: diesel oil tank

200: water tank 300: atomization device

310: casing 310a ~ 310d: unit casing

311 processing chamber 312 entrance

313: exit 330: impeller

340: Stator 340a ~ 340d: Unit stator

341: home 350: rotor

350a ~ 350d: Unit rotor 351: Groove

360: shaft 370: motor

400: Boiler S: Euro

Claims (8)

A casing 310 having a processing chamber 311, an inlet 312 and an outlet 313 communicating with both of the processing chamber 311; A stator 340 provided along a circumference of the processing chamber 311; The stator 340 is disposed concentrically in the stator 340 to form a flow path S between the stator 340 and the liquid flowing into the inlet 312 and passing through the flow path S. A rotor (350) paired with and granulated; A shaft 360 in which the rotor 350 is installed; It includes a shaft drive means for rotating the shaft 360, The rotor 350 is composed of at least three unit rotors 350a to 350d detachably coupled to the shaft 360, respectively. The stator 340 is composed of a plurality of unit stators 340a to 340d paired with the unit rotors 350a to 350d, respectively, The casing 310 is provided with the unit stator (340a ~ 340d), respectively, and consists of a plurality of unit casing (310a ~ 310d) removable from each other, Atomizing apparatus 300, the processing capacity is changed according to the number of the unit casing (310a ~ 310d), the unit stator (340a ~ 340d) and the unit rotor (350a ~ 350d). The method according to claim 1, At least one of the unit rotors 350a to 350d has a different outer circumference from the other, and is disposed on the shaft 360 in the order of the small outer circumference from the liquid inflow side to the jaw on the flow path S. FIG. Atomization apparatus 300 to form. The method according to claim 2, The unit rotors (350a ~ 350d) is the atomization device 300 is different in size of the outer circumference. The method according to any one of claims 1 to 3, The flow path (S) is an atomizing device having a structure that is gradually reduced toward the outlet side from the liquid inlet side (300). The method according to any one of claims 1 to 3, The atomizer 300 and the paired rotor 350 and the stator 340 are formed so that the opposite portion has an uneven structure. The method according to any one of claims 1 to 3, The atomizer 300 further comprises an impeller 330 provided at the inlet 312 side of the processing chamber 311. delete A fuel tank for storing liquid petroleum fuel; A water supply device for supplying water; An atomization device (300) according to claim 1 for refining the liquid petroleum product fuel from at least a fuel tank of the fuel tank and the water supply device; Liquid fuel combustion system comprising a combustion device for receiving the liquid fuel from the atomization device (300) for combustion.

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