KR200178794Y1 - Spray nozzle having 3 ways of fluids for waste fluid treatment - Google Patents

Abstract

The present invention forms a separate flow path for supplying and spraying waste liquid into the two-fluid injection nozzle tube that sprays and burns the oil fuel in the center of the burner to spray oil fuel and waste liquid into the atomizer in the sprayer. Oil fuel sprayed by mixing and discharging by the ignition source has a flame formed by the ignition source, and the waste liquid is sprayed inside the flame to be thermally decomposed by high temperature flame so that no pollutants are generated from the waste liquid. It is about.

The present invention is an oil fuel nozzle tube for guiding oil fuel, a waste fluid nozzle tube for guiding introduced waste liquid, and an atomized material in the three-fluid injection nozzle used for an oil mixed gas burner used in an incinerator. On the front side of the nozzle body provided with the atomizing nozzle tube or the like for guiding the transfer, a sprayer is formed in which a central fuel spray hole and a plurality of waste liquid spray holes are located outside thereof, so that oil fuel and waste liquid are sprayed into the atomizer. It provides a three-fluid injection nozzle for waste liquid treatment configured to mix and discharge by the.

Description

SPRAY NOZZLE HAVING 3 WAYS OF FLUIDS FOR WASTE FLUID TREATMENT}

The present invention relates to a three-fluid injection nozzle used for an oil-mixed gas burner used in a rotary kiln type incinerator, and more specifically, to a two-fluid injection nozzle tube for spraying and burning oil fuel in the center of the burner. By forming a separate flow path for supplying and spraying waste liquid, oil fuel and waste liquid are mixed and discharged by atomizing material in the sprayer, and the sprayed oil fuel forms a flame by the ignition source. The present invention relates to a three-fluid injection nozzle for waste liquid treatment in which waste liquid is sprayed and thermally decomposed by a high temperature flame so that no pollutant is generated from the waste liquid.

In general, conventional two-fluid injection nozzles that can be burned by spraying oil fuel may be classified into an internal mixing type, an external mixing type, an intermediate mixing type (Y-Jet), and the like, according to the mixing position of the fuel and the atomizer.

The internal mixing type is a method in which oil fuel and atomizing material are premixed in the mixing chamber in front of the sprayer located at the tip of the nozzle, and atomized sprayed from several spray holes. In this case, the supply pressure of the atomizer and the oil fuel is 3-10 kg / ㎠ and the pressures of the two fluids should be the same. The mass flow rate of steam required for atomization is about 10-20% of oil fuel.

In addition, the external mixing type is supplied to the atomizer through each passage in the burner nozzle tube because the fuel and the atomizing material are mixed outside the nozzle. The flow rate of atomizing material required for atomization is generally 2-7% of theoretical air volume for air and about 20-60% of oil fuel mass for steam. In addition, the supply pressure of atomizing material is about 2-8 kg / cm <2>.

In addition, the intermediate mixing type is referred to as Y-Jet type because it is mixed in the middle of the injection hole of the atomizing material at an arbitrary angle in the manner of mixing between the internal mixing type and the external mixing type. There are a large number of fuel sprayers, and flame shapes having different shapes can be obtained according to the arrangement, shape, and spray angle of the fuel sprayer. It is used in a relatively large capacity, but the pressure of the atomizer is 1-15kg / ㎠ and is used in a relatively wide range.

As described above, the two-fluid injection nozzle uses compressed air and water vapor as a spray medium. Since the gas has a low density, even at low injection pressures, the injection speed is high, so that a large relative velocity is generated between the liquid having a low injection speed and atomization of the liquid occurs.

In the case of two-fluid injection nozzles, which are generally burned using oil fuel (hydrocarbon system), oil fuel is divided into droplets of several tens of micrometers by atomization, and the flame temperature at combustion is very high, so that nitrogen is more than gas combustion. A large amount of oxide is generated. Therefore, as a way to lower the flame temperature, water is supplied together with the oil fuel to lower the flame temperature. In this case, if the amount of water supplied is greater than the amount of oil fuel, the droplets of oil and water become large and the flame temperature is excessively low, resulting in poor combustibility and flame extinguishing.

In addition, the burner which supplies a large amount of heat into the incinerator so that the incinerator can be discharged by drying and incineration of sludge introduced into the conventional rotary kiln type incinerator has an oil fuel and a gas fuel alternately as necessary. Because of the need for use, there should be a fuel injection nozzle in the center of the burner capable of spraying oil fuel and a gas nozzle capable of using gas fuel at the burner edge. Therefore, the structure of the device becomes large and difficult to handle.

In addition, wastes treated in incinerators should be capable of high temperature pyrolysis by spraying waste liquids in addition to sludge. However, it is impossible to inject the waste liquid into the incinerator by installing a separate nozzle. Therefore, the waste liquid and the oil fuel must be sprayed into the combustion chamber without interfering with each other and having separate spray holes in the oil fuel spray nozzle so that the oil fuel can be burned by burning.

In the case of the conventional intermediate-mixing spray nozzle as illustrated in FIG. 8, a packing plate 30 is mounted on the rear side of the sprayer 10, and an oil fuel supply hole 10c is provided inside the sprayer 10. Each of the water supply holes 10e forms a separate flow path, but the two fluids (water and oil fuel) are mixed with each other because the respective supply holes are combined in the fuel spray holes 10a. Therefore, in this case, when the amount of water supplied is greater than the amount of oil fuel, the flame temperature is excessively lowered, resulting in poor combustibility and flame extinguishing.

An object of the present invention is to solve the conventional problems as described above, oil fuel by forming a separate flow path to supply the waste liquid to spray inside the two-fluid injection nozzle pipe that is burned by spraying the oil fuel in the center of the burner The oil fuel sprayed by mixing and discharging the waste liquid with the atomizer in the sprayer forms a flame by the ignition source, and the waste liquid is sprayed inside the flame so that it does not generate pollutants from the waste liquid by high temperature pyrolysis. It is an object of the present invention to provide an improved three-fluid injection nozzle for waste liquid treatment.

1 is a partially cut-away perspective view of a three-fluid injection nozzle for waste liquid treatment of the present invention;

Figure 2 is a front sectional view of the intermediate mixed (Y-Jet) injection nozzle according to the prior art;

3 is a front sectional view of the jet nozzle of the present invention;

4 is a right side view of the present invention;

5 is a block diagram of a sprayer packing plate provided in the spray nozzle of the present invention;

6 is a front sectional view of the nozzle body and the oil fuel nozzle tube of the present invention are combined;

7 is a front cross-sectional view of the sprayer of the intermediate mixed injection nozzle according to the prior art;

8 is a cross sectional front view of the sprayer of an intermixed injection nozzle adding water in accordance with the prior art;

9 is a front sectional view showing an operating state of the spray nozzle according to the present invention;

10 is an explanatory view showing a minimum injection angle of fuel spray droplets and waste liquid spray droplets in the injection nozzle according to the present invention;

11 is an explanatory view showing the maximum injection angle of the fuel spray droplets and waste liquid spray droplets in the injection nozzle according to the present invention.

Explanation of symbols on the main parts of the drawings

10 ..... Atomizer 10a .... Fuel sprayer

10b .... waste liquid spray hole 10c .... fuel supply hole

10d .... waste liquid supply hole 10e .... water supply hole

20 ..... Female thread for fixing sprayer 30 ..... Sprayer packing plate

40 ..... oil fuel nozzle tube 40a .... oil fuel introduction tube

50 ..... waste liquid nozzle tube 50a .... waste liquid introduction tube

60 ..... non-fire nozzle 60a .... non-fire inlet

70 ..... Nozzle body 70a .... Oil fuel flow pipe

70b .... waste fluid flow pipe 70c .... plug

The present invention, in order to achieve the above object, in the three-fluid injection nozzle used for the oil-mixed gas burner used in the incinerator, the oil fuel nozzle pipe for guiding the oil fuel and the guide to convey the introduced waste liquid On the front side of the nozzle body, which has a waste nozzle tube and an atomizer nozzle tube for guiding the introduced atomized material, a sprayer having a plurality of central fuel spray holes and a plurality of waste liquid spray holes outside thereof is positioned to spray oil fuel and waste liquid. By providing a three-fluid injection nozzle for waste liquid treatment, characterized in that it is configured to mix and discharge by atomization in the interior.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a part of the present invention cut away. An embodiment of the present invention is the oil fuel introduction pipe (40a), waste liquid introduction pipe (50a), atomizing material introduction pipe (60a), nozzle body 70, oil fuel nozzle pipe (40), waste liquid nozzle pipe (50), The atomizer nozzle tube 60, the sprayer packing plate 30, the sprayer 10, the sprayer fixing female screw 20, etc. are made possible.

As shown, the injection nozzle 1 of the present invention has an oil fuel introduction pipe 40a in the nozzle body 70 for guiding the fuel oil pumped from the oil pump (not shown) into the nozzle. And, the oil fuel nozzle for guiding the oil fuel introduced through the oil fuel introduction pipe (40a) to the sprayer (10) having a nozzle body 70 for connecting the oil fuel introduction pipe (40a) with the nozzle The tube 40 is formed in the nozzle body 70.

And, provided between the sprayer 10 and the oil fuel nozzle pipe 40 is provided with a sprayer packing plate 30 for maintaining a high pressure airtight, the packing plate 30 is shown in Figure 5, A liquid fuel passage hole 31a, a waste liquid passage hole 31b, and an atomizer passage hole 31c are formed inside the liquid fuel passage hole 31a. In addition, the waste liquid introduction pipe 50a for guiding the waste liquid transferred from the pump into the nozzle, and the atomizer introduction pipe 60a for guiding the atomized material into the nozzle from the compressor or the steam pipe are provided in the nozzle body 70. ) Is provided.

Then, the waste liquid nozzle tube 50 for guiding the waste liquid introduced as described above to the sprayer 10 and the atomizer nozzle tube 60 for guiding the introduced atomizer to the sprayer 10 include a nozzle body ( 70), the oil fuel is mounted to the outside of the cone shape, the waste liquid is to be mounted on the front side of the nozzle body 70, such as a sprayer 10 for spraying in the mist state from the inside of the columnar shape.

And, as shown in Figure 3, the atomizer 10, the fuel atomization hole (10a) and the waste liquid atomization hole (10b) is supplied to the front side of the atomizer by a plurality of atomizing nozzle tube 60 in the center, Fuel supply holes 10d are connected to the fuel spray hole 10a from the oil fuel nozzle tube 40, respectively, and the waste liquid supply hole 10c is connected to the waste liquid spray hole 10b from the waste liquid nozzle tube 50. It has a structure connected to each). In FIG. 4, six fuel spray holes 10a and six waste liquid spray holes 10b are shown, but the present invention is not limited thereto.

Reference numeral 70b denotes a waste liquid induction tube, 70a is an oil fuel induction tube, and 70c is a plug.

Referring to the operation and effect of the present invention configured as described above are as follows.

First, the three-fluid injection nozzle 1 of the present invention is sprayed at a pressure of 3-7 kg / ㎠ in an oil fuel pump, a waste liquid pump, and an atomizer supply system (for example, a compressor or a steam pipe) in order to spray droplets of several tens of micrometers. When supplied to the oil fuel introduction pipe (40a), waste liquid introduction pipe (50a) and atomizing material introduction pipe (60a) is moved to the sprayer (10) through each nozzle pipe (40, 50, 60), As illustrated in FIG. 3, a fuel supply hole 10c and a waste liquid supply hole 10d are connected to an intermediate position between the fuel spray pipe 10a and the waste liquid spray tube 10b to spray fuel and waste liquid, respectively.

As illustrated in FIG. 4, the fuel spray holes 10a are 6-12 at regular intervals on the concentric circles, and the waste liquid spray holes 10 are the number of fuel spray holes 10a in the concentric circles of the fuel spray holes 10a. Likewise, 6-12 are arranged in concentric circles at regular intervals. The fuel spray holes 10a and the waste liquid spray holes 10b arranged in concentric circles are sprayed into the combustion chamber by staggering each other in the circumferential direction, and the sprayed droplets are arranged so as not to overlap each other.

In more detail, when the injection angle of the waste liquid sprayed from the waste liquid spray tube 10 is set to 20-35 °, and the injection angle of the oil fuel sprayed from the fuel spray tube 10a is set to 40-60 °. As illustrated in FIG. 9, oil fuel is conically sprayed, and waste fluid is sprayed therein, so that droplets of oil fuel are sprayed by a combustion flame by an ignition source in a state where the droplets of several tens of micrometers sprayed with each other do not overlap. The droplets of the waste liquid are prevented from generation of contaminants which are intended to be pursued by the present invention by the high temperature pyrolysis of the waste liquid by the hot oil fuel combustion flame.

When the waste liquid spray angle is 20 degrees or less, the respective main steams of the waste liquid spray holes overlap each other, and when the waste liquid spray drops, the spray droplets recombine and become large. In addition, the spray angle of the waste liquid spray droplets should be at most 35 ° or less, thereby forming an appropriate wake area. Above 35 °, excess wake will damage the nozzle tip. Therefore, the injection angle of the waste liquid sprayed from the waste liquid spray tube 10 is set to 20-35 °.

When the liquid fuel spray angle is 40 ° or less, that is, + 20 ° or less of the waste liquid spray angle, it is not preferable because the combustion flame is heated close to the waste liquid, and when the liquid fuel spray droplet is 60 ° or more, the burner Infected body hits the body and damages the burner. Therefore, the injection angle at which the oil fuel is sprayed at the fuel spray hole 10a is 40-60 °.

The present invention requires a separate manufacturing order and method because it is characterized by maintaining a more airtight than the conventional two-fluid injection nozzle. That is, in the case of the conventional Y-Jet two-fluid injection nozzle, between the oil fuel nozzle tube 40 and the atomizer packing plate 30 in which the oil fuel and the atomizer are in front of the atomizer, the atomizer nozzle tube ( Even if there is slight leakage between the sprayer packing plate 30 and the sprayer packing plate 30 and the sprayer 10, the oil fuel and the atomizer are mixed in the sprayer, so that no particular problem occurs.

However, the three-fluid injection nozzle 1 of the present invention is provided between the oil fuel nozzle tube 40 and the sprayer packing plate 30, between the waste liquid nozzle tube 5 and the sprayer packing plate 30, and the sprayer packing plate 30. When leakage occurs between the sprayer 10 and the fluid, the fluid flows from the high-pressure fluid in the oil fuel and the waste fluid to the low-pressure fluid, thereby degrading the function of the three-fluid injection nozzle.

As described above, a processing method of the nozzle body 70, a method of coupling each nozzle tube to the nozzle body 70, and a manufacturing method for packing each nozzle tube and the atomizer packing plate 30 are as follows. .

The function of the nozzle body 70 is to introduce oil fuel, waste liquid and atomizer to form respective flow paths. The center of the nozzle body 70 can be combined with the flat screw of the atomizer nozzle tube 60 with a margin of 10-20mm to process the female thread of the atomization introduction pipe 60a to introduce the atomization. Machine the internal thread. The female thread of the oil fuel inlet tube 40a and the waste liquid introduction tube 50a is processed by the same method as the method of processing the female thread of the atomizer introduction tube 60a, and the waste liquid and the oil fuel are the waste liquid nozzle tube 50 and the oil fuel nozzle tube. The oil fuel flow path tube 70a and the waste liquid flow path tube 70b are processed to form a flow path to be led to 40, and are packed with a plug 70c at the end of each pipe.

The combination of the nozzle body 70 and each nozzle tube is combined by processing a flat screw.

When assembling each nozzle tube, in order to ensure the flatness of each nozzle tube end of the surface in contact with the sprayer packing plate 30, the surface where the nozzle body 70 and the nozzle tube meet each other is at the end of the male thread of each nozzle tube. Stopper).

The joining sequence of the atomizer nozzle tube 60, the waste liquid nozzle tube 50, the oil fuel nozzle tube 40 in order to combine, and the atomizer as illustrated in FIG. Insert the packing plate 30.

In order to always position the waste liquid nozzle tube 50 and the no-fill nozzle tube 60 inserted into the oil fuel nozzle tube 40 at the ends of the waste liquid nozzle tube 50 and the atomizing nozzle tube 60. Weld and attach the centering guide plate 80 of the wing-shaped plate at the 50-100mm point. In order to improve the flatness of each nozzle tube, each joined nozzle tube must be reworked and assembled.

And, the material of the atomizer packing plate is processed to 99.9% of copper in consideration of the pressure of each fluid is 3-7kg / ㎠. In addition, the structure of the sprayer packing plate 30 is a packing scheme for preventing leakage due to the pressure difference between adjacent fluids as illustrated in FIG. 5. Process. In addition, both sides in contact with the acid of the packing plate to make a 0.5-1mm packing valley (30b) to be in contact with each other.

The present invention is an atomizer (Atomizer) is designed to be sprayed into the combustion chamber by forming a separate flow path each of the waste liquid spray tube (10b) for guiding the waste liquid is sprayed as described above and the oil spray tube (10a) for guiding the oil fuel As illustrated in FIG. 9, the waste liquid sprayed by the radiant heat radiated from the hot oil fuel flame is heated and vaporized in the form of droplets to be pyrolyzed at high temperature to completely decompose without releasing environmentally harmful substances. do.

As described above, according to the present invention, in order to treat the waste liquid in the prior art, the waste liquid treatment facility was separately treated. However, the present invention is a three-fluid jet instead of a two-fluid injection nozzle in a facility (rotary kiln incinerator) that was conventionally operated. By replacing the nozzle, the waste liquid can be treated harmlessly without any additional investment.

Claims (3)

A three-fluid injection nozzle used for an oil mixed gas burner used in an incinerator, comprising: an oil fuel nozzle tube for guiding oil fuel, a waste liquid nozzle tube for guiding introduced waste liquid, and an introduced atomizer On the front side of the nozzle body provided with the atomizer nozzle tube or the like, a sprayer is formed in which a central fuel spray hole and a plurality of waste liquid spray holes are located outside thereof, and the oil fuel and the waste liquid are mixed in the sprayer by atomization. , Three-fluid injection nozzle for waste liquid treatment, characterized in that configured to discharge. According to claim 1, The atomizer 10 is a plurality of fuel spray hole (10a) and waste liquid spray hole (10b) is supplied to the front side from the atomizer nozzle tube 60 in the center, the fuel spray hole (10a) The fuel supply holes 10d are connected to each other from the oil fuel nozzle tube 40, and the waste liquid supply holes 10c are connected to the waste liquid spray holes 10b from the waste liquid nozzle pipe 50, respectively. Three fluid injection nozzle for waste liquid treatment, characterized in that configured to have. The spray angle of the waste liquid sprayed from the waste liquid spray tube 10 is 20-35 °, and the spray angle of oil fuel sprayed from the fuel spray tube 10a is 40-60 °. Three fluid injection nozzle for waste liquid treatment.