CN203284415U - Spray gun and smelting furnace adopting same - Google Patents
Spray gun and smelting furnace adopting same Download PDFInfo
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- CN203284415U CN203284415U CN2013202552958U CN201320255295U CN203284415U CN 203284415 U CN203284415 U CN 203284415U CN 2013202552958 U CN2013202552958 U CN 2013202552958U CN 201320255295 U CN201320255295 U CN 201320255295U CN 203284415 U CN203284415 U CN 203284415U
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Abstract
The utility model discloses a spray gun for a smelting furnace and the smelting furnace adopting the same. The spray gun comprises an outer pipe, an inner pipe and a rotational flow device, wherein the inner pipe is arranged inside the outer pipe; a first channel used for conveying fuel is limited by the inner pipe; a second channel used for conveying combustion-supporting gas is limited between the outer pipe and the inner pipe by the outer pipe and the inner pipe; the rotational flow device is communicated with second channel fluid in a configuring way and used for enabling the combustion-supporting gas in the second channel to rotationally spray out from the outlet of the spray gun, so that the combustion-supporting gas is fully mixed with the fuel sprayed out from the outlet of the spray gun. The smelting furnace adopting the spray gun can be a shaft furnace of a blast furnace, an air furnace or a cupola. The spray gun provided by the utility model has the advantage that the burnout rate of the fossil fuel can be improved. Therefore, the replacement ratio of the fossil fuel replacing coke used by the smelting furnace for smelting can be improved.
Description
Technical field
The smelting furnace that the utility model substantially relates to a kind of spray gun for smelting furnace and has this spray gun.
Background technology
Basically, in the process of the ironmaking of the shaft furnace with such as blast furnace or blast furnace or cupola furnace, be put to furnace top as raw-material iron ore and/or scrap iron and the coke that acts as a fuel, simultaneously, to the air port of the bottom that is positioned at this smelting furnace, be blown into (heat) wind.Coke provides three major functions: fuel, reductive agent and gas channel.When as fuel, thereby coke and hot blast reaction provide most of heat energy required in this process.The carbon monoxide (CO) that in coke, contained fixed carbon (C) and coke burning produce is all the reductive agent that iron ore and other oxide compound reduce.Due to its porousness, coke is also as gas channel, allows gas in the melting process shaft furnace of upwards flowing through.When coke burning and reducing iron ore, iron and the slag of fusing have been produced.The iron of fusing and slag are discharged from the position of the bottom near shaft furnace.
Based on economic cause, mineral fuel such as oil, Sweet natural gas and coal are injected in shaft furnace to reduce the consumption of required coke in fusion process.As a rule, mineral fuel are injected in the blast orifice and/or convolution district, air port of shaft furnace.Blast pipe and tuyere small sleeve have formed blast orifice.At present, in some shaft furnaces, blast furnace especially, countries in the world are generally adopted and are sprayed into the relatively cheap mineral fuel of part price from air port to replace the more expensive coke of price to reduce the energy cost of fusion process.As for selecting which kind of mineral fuel to be advisable, the general resources supplIes different according to various countries determined, and China is mainly coal injection.Economic factor forces the use of coal dust to increase, and has therefore reduced the use of coke.Yet technical problem has but limited the utilization of coal dust.
As mentioned above, one of major function of coke is that this is provided by its porousness as gas channel.When furnace charge is descended by furnace roof, furnace gas upwards flow through coke hole and pass through shaft furnace.Preferably, the ventilation property of this furnace charge is equally distributed, and reducing gas is fully passed in furnace charge.Consistent perviousness is very important for the steady running of shaft furnace.Perviousness deficiency and/or perviousness be inconsistent, and cause the flowing through air-flow of smelting furnace cross section is inhomogeneous, and this causes that the furnace charge reduction is inhomogeneous and speed of material descent is inconsistent and affects the steady running of stove.
When the coal dust of tuyere injection increases, due to the injecting velocity of coal dust is very high and in typical blast furnace the length in convolution district, air port only be about 1-2 rice, pulverized coal particle almost fully mixes between not free and warm air and causes the incomplete combustion of coal dust, and result forms carbon black.The mineral fuel of this winding-up can not perfect combustion problem exist equally for other mineral fuel such as heavy oil.Carbon black can be blocked the hole of coke and the ventilation property (being the mobility of gas in stove) of stove is reduced, and has therefore limited the amount of the mineral fuel that can be injected into, be used for substitute for coke.
Along with the continuous increase that sprays into mineral fuel in smelting furnace, industrial oxygen has been added in the smelting furnace melting technology and has reached the purpose that increases output and come balance additionally to jet the temperature of combustion that mineral fuel bring and reduce.Due to the thermal endothermic decomposition of mineral fuel, consumption of calorie, cause temperature of combustion to descend.Spray into industrial oxygen and help to keep flame temperature in convolution district, air port.Spraying into simultaneously mineral fuel and industrial oxygen allows the operator smelting furnace output to be increased being no more than at the temperature of acceptable tuyere zone.Oxygen can spray in company with the individual passage of mineral fuel via spray gun, and/or with air blast, mixes.Oxygen can mix with the air blast in hotblast stove upstream and/or downstream to provide the air blast of the oxygen-enriched environment of an integral body.Relevant patent documentation comprises United States Patent (USP) U.S.3,758,090, U.S.3,832,121, U.S.4,921,532, U.S.5,333,840, U.S.5,544,868, U.S.5,698,010, U.S.5,746,804 and U.S.6,319,458.
The utility model content
For how improving the burning of mineral fuel in smelting furnace, this utility model provides a kind of novel spray gun, reaches farthest and replaces coke with mineral fuel when reducing fuel cost.Particularly, the disclosed spray gun of the utility model comprises: outer tube and inner tube, described inner tube is arranged in described outer tube, described inner tube defines the first channel for delivery of fuel, and described outer tube and described inner tube define the second passage for delivery of combustion-supporting gas between described outer tube and described inner tube; And swirl-flow devices, it is configured to be communicated with described second passage fluid, thereby the described combustion-supporting gas that is used for making described second passage ejects from the outlet of described spray gun the fuel that ejects with the outlet from described spray gun rotatably, fully mixes.
According to an aspect of the present utility model, described swirl-flow devices is the inlet pipe to the described combustion-supporting gas of described second passage supply, described inlet pipe is connected on described outer tube and is configured to make the combustion-supporting gas of described inlet pipe to flow in described second passage with the substantially tangent direction of the internal surface with described outer tube, and is separated with predetermined length between the outlet of the entrance of described inlet pipe and described spray gun.Particularly, the internal surface of the exit end of described outer tube is inside gradually-reducing shape.More specifically, the taper angle of the internal surface of the exit end of described outer tube is 5 °-45 °.Preferably, the taper angle of the internal surface of the exit end of described outer tube is 10 °-30 °.Preferably, the angle of described inlet pipe and described outer tube is 90 °-135 °.
According to another aspect of the present utility model, described swirl-flow devices is the termination installation parts, described outer tube and described inner tube define mounting portion jointly in the end that is positioned at downstream, described termination installation parts is arranged on described mounting portion, described termination installation parts has longitudinal hole and at least one helical channel that extends around described longitudinal hole in the vertical, described longitudinal hole is aimed at described first channel to allow described fuel to flow out via described longitudinal hole, and described at least one helical channel is configured to be communicated with described second passage fluid.Particularly, described helical channel has inlet end and exit end, and described helical channel is at the cross-sectional area of the opening of the inlet end cross-sectional area greater than the opening at exit end.Particularly, the eddy flow angle of described helical channel is 25 °-65 °.Preferably, the eddy flow angle of described helical channel is 35 °-45 °.
Selectively, described at least one helical channel is arranged on the outside surface of described termination installation parts, and described termination installation parts is arranged between described outer tube and inner tube so that the internal surface of its outside surface and described outer tube is suitable and make described inner tube by described longitudinal hole.Particularly, the internal surface of the exit end of described outer tube is inside gradually-reducing shape.More specifically, the taper angle of the internal surface of the exit end of described outer tube is 5 °-45 °.Preferably, the taper angle of the internal surface of the exit end of described outer tube is 10 °-30 °.Selectively, at the outlet side of described spray gun, the described inner tube of described outer tube extend through is so that the exit end face of the exit end face of described outer tube and described inner tube is spaced apart.
Selectively, described termination installation parts comprises main body and sleeve, described at least one helical channel is arranged on the outside surface of described main body, and described longitudinal hole connects described main body, and described jacket casing is on described main body and described sleeve and described outer tube Fluid Sealing.Preferably, the internal surface of the exit end of described sleeve is inside gradually-reducing shape.Particularly, the taper angle of the internal surface of the exit end of described sleeve is 5 °-45 °.Preferably, the taper angle of the internal surface of the exit end of described sleeve is 10 °-30 °.
Particularly, described combustion-supporting gas is concentration greater than 21% oxygen.Preferably, the concentration of described oxygen is 80%-100%.
Selectively, described smelting furnace is the shaft furnace of blast furnace, blast furnace or cupola furnace.
The invention also discloses a kind of smelting furnace, described smelting furnace comprises spray gun as above.
Particularly, described combustion-supporting gas comes from the source of oxygen that is communicated with described spray gun fluid, and wherein, described source of oxygen comprises liquid oxygen storage tank, air separation plant, pressure-variable adsorption or vacuum absorption device.
Description of drawings
In order to explain the utility model, its illustrative embodiments will be described with reference to the drawings hereinafter, in accompanying drawing:
Fig. 1 shows the schematic diagram according to the spray gun of the first embodiment of the present utility model;
Fig. 2 shows the schematic diagram of the swirl-flow devices in Fig. 1;
Fig. 3 shows the schematic diagram of the inner tube in Fig. 1;
Fig. 4 shows the schematic diagram according to the spray gun of the second embodiment of the present utility model;
Fig. 5 shows the front elevational schematic according to the spray gun of the third embodiment of the present utility model;
Fig. 6 shows the schematic side view according to the spray gun of the third embodiment of the present utility model;
Fig. 7 shows the schematic top plan view according to the spray gun of the third embodiment of the present utility model;
Fig. 8 shows the schematic diagram that has according to the smelting furnace of the nozzle of various embodiments of the present utility model.
Similar features in different figure is by similar Reference numeral indication.
Embodiment
As shown in the figure, the following more detailed description of embodiment of the present utility model is not intended to limit protection domain of the present utility model.As claim, in order to illustrate preferred forms of the present utility model and in order to make those of ordinary skill in the art be enough to realize the utility model, the purpose of following description only is to illustrate and is used for describing feature of the present utility model and characteristic.Therefore, protection domain of the present utility model is limited by appending claims fully.
With reference to accompanying drawing, understand following detailed explanation of the present utility model and exemplary embodiment, wherein element of the present utility model and feature are referred to by Reference numeral in specification sheets full text.
As shown in Figure 1-Figure 3, disclose the spray gun 100 of the first embodiment of the present utility model, this spray gun 100 can be made by any suitable material well known in the prior art, and for example, stainless steel and other also can stand the material of hot blast temperature with the oxygen compatibility.This spray gun 100 has inner tube 102, outer tube 104 and swirl-flow devices 106.The internal surface of the exit end of this outer tube 104 is inside gradually-reducing shape, and its taper angle α 1 is 5 °-45 °, and more preferably, its taper angle is 10 °-30 °.Inner tube 102 is arranged in outer tube 104 coaxially, and this inner tube 102 defines the first channel 107 for delivery of fuel, and this outer tube 104 and inner tube 102 define the second passage 108 for delivery of combustion-supporting gas between outer tube 104 and inner tube 102.Wherein, fuel can be mineral fuel, and these mineral fuel can comprise solid mineral fuel, for example, and coal dust, and/or liquid mineral fuel, for example oil.Combustion-supporting gas can comprise the mixed gas of air, industrial oxygen or air and industrial oxygen.Herein, industrial oxygen can be for containing the gas of 80%-100% oxygen.Swirl-flow devices 106 is configured to be communicated with second passage 108 fluids, thereby the combustion-supporting gas that is used for making second passage 108 ejects from the outlet of spray gun 100 fuel that ejects with the outlet from spray gun 100 rotatably, fully mixes.
Particularly, this swirl-flow devices 106 is the termination installation parts, and outer tube 104 and inner tube 102 define in the end that is positioned at downstream jointly for the mounting portion that swirl-flow devices 106 is installed.More specifically, this mounting portion is limited by the part internal surface that has externally threaded connection portion 102a and outer tube 104 on inner tube 102.This swirl-flow devices 106 comprises that main part 109 cylindraceous and internal diameter are slightly less than the connection portion 110 of main part 109, and the internal surface of connection portion 110 has screw thread.Longitudinal hole 112 connects main part 109 and connection portion 110.On main part 109, it can fit each other to the internal surface that inside contracts part extension and its outside surface and outer tube 104 of outer tube 104, also is limited with a plurality of helical channels 114 that extend around longitudinal hole 112 in the vertical on it.Wherein, this helical channel 114 is substantially rectangular, has inlet end and exit end, and this helical channel 114 is at the cross-sectional area of the opening of the inlet end cross-sectional area greater than the opening at exit end, the eddy flow angle β 1 of this helical channel 114 is between 25 °-65 °, more preferably between 35 °-45 °.As shown in Figure 1, this eddy flow angle β 1 is restricted to the angle between the longitudinal axis of the tangent line of helical channel 114 on the vertical section of spray gun 100 and fuel channel.This eddy flow angle β 1 can keep roughly the same to exit end in the length of swirl-flow devices 106 from the inlet end of helical channel 114.Roughly the same eddy flow angle means that at this eddy flow angle can change within 5 °.On connection portion 110, its internal surface is furnished with the internal thread that can be threaded with the connection portion 102a of inner tube 102.By this, swirl-flow devices 106 is configured to, and when swirl-flow devices 106 was installed on mounting portion, when the internal surface of its outside surface and outer tube 104 is suitable, inner tube 102 was by longitudinal hole 112.Therefore, longitudinal hole 112 is aimed at first channel 107 to allow fuel to flow out via longitudinal hole 112, and helical channel 114 is configured to be communicated with second passage 108 fluids.
Be appreciated that this swirl-flow devices 106 also can be substituted by existing swirl vane or other swirl-flow devices.Also be appreciated that, the internal surface that inside contracts of the exit end of the outside surface of the exit end of inner tube 102 and outer tube 104 has formed the circular channel that inside contracts, thereby this allows to expand and to converge to be integrated before the fuel of first channel 107 is left in contact from the discrete combustion-supporting gas of helical channel 114 to provide more continuous combustion-supporting gas rotating vortex.Like this, by allowing combustion-supporting gas at a high speed, expand and converge for rotating vortex, local turbulent flow with can be detrimental to the harmful flame attach that is positioned at spray gun 100 ends and all suppressed.
In the present embodiment, combustion-supporting gas can be for concentration greater than 21% oxygen, and more preferably, the concentration of this oxygen can be 80%-100%.Oxygen can derive from liquid oxygen storage tank, air separation plant, pressure-variable adsorption or vacuum absorption device, but is not limited to these devices.
As shown in Figure 4, disclose the spray gun 200 of the second embodiment of the present utility model, the swirl-flow devices 206 of this spray gun 200 is substantially similar with the structure of the swirl-flow devices 106 of aforesaid spray gun 100, is also the termination installation parts.This spray gun 200 has inner tube 202, outer tube 204 and swirl-flow devices 206.Inner tube 202 is arranged in outer tube 204, and this inner tube 202 defines the first channel 207 for delivery of fuel, and this outer tube 204 and inner tube 202 define the second passage 208 for delivery of combustion-supporting gas between outer tube 204 and inner tube 202.Swirl-flow devices 206 is configured to be communicated with second passage 208 fluids, thereby the combustion-supporting gas that is used for making second passage 208 ejects from the outlet of spray gun 200 fuel that ejects with the outlet from spray gun 200 rotatably, fully mixes.
Particularly, this swirl-flow devices 206 is the termination installation parts, and outer tube 204 and inner tube 202 define in the end that is positioned at downstream jointly for the mounting portion that swirl-flow devices 206 is installed.Particularly, this mounting portion is limited by the end of be threaded part and the inner tube 202 of the end of outer tube 204.This swirl-flow devices 206 comprises main body 209 and sleeve 210, and sleeve 210 is fixed on main body 209 by any method of knowing.On main body 209, it has longitudinal hole 212, and the internal surface of the outside surface of main body 209 and sleeve 210 fits each other, and also is limited with a plurality of helical channels 214 that extend around this longitudinal hole 212 in the vertical on it.Wherein, this helical channel 214 has inlet end and exit end, this helical channel 214 is at the cross-sectional area of the opening of the inlet end cross-sectional area greater than the opening at exit end, and the eddy flow angle β 2 of this helical channel 214 is between 25 °-65 °, more preferably between 35 °-45 °.On sleeve 210, its internal surface can be furnished with the internal thread that can be connected with the part that is threaded of outer tube 204 ends.This swirl-flow devices 206 is configured to, and when swirl-flow devices 206 is installed on mounting portion, sleeve 210 is connected to outer tube 204, just makes longitudinal hole 212 fluids of main body 209 be communicated to inner tube 202.Therefore, longitudinal hole 212 is aimed at first channel 207 to allow fuel to flow out via longitudinal hole 212, and helical channel 214 is configured to be communicated with second passage 208 fluids.
Selectively, the sleeve 210 of swirl-flow devices 206 can be provided with outside screw, and the end of outer tube 204 can correspondingly be provided with internal thread.Like this, this swirl-flow devices 206 is configured to, and the sleeve 210 of this swirl-flow devices 206 is threaded onto on outer tube 204, just makes longitudinal hole 212 fluids of the main body 209 of swirl-flow devices 206 be communicated to inner tube 202.More preferably, can also be provided with packing ring between the sleeve 210 of outer tube 204 and swirl-flow devices 206 to improve the hermetic seal degree.
Selectively, the end of the longitudinal hole 212 on the main body 209 of this swirl-flow devices 206 can be provided with internal thread, and correspondingly, the end of inner tube 202 can be provided with outside screw to connect the main body 209 of swirl-flow devices 206.Further, the sleeve 210 of swirl-flow devices 206 can be provided with outside screw or internal thread, and correspondingly, the end of outer tube 204 can be provided with internal thread or outside screw with joint sleeve 210.
By accompanying drawing as can be known, the internal surface of the exit end of the sleeve 210 of this swirl-flow devices 206 is inside gradually-reducing shape, and its taper angle α 2 can be about 5 °-45 °, more preferably is about 10 °-30 °.
In the present embodiment, combustion-supporting gas can be for concentration greater than 21% oxygen, and more preferably, the concentration of this oxygen can be 80%-100%.Oxygen can derive from liquid oxygen storage tank, air separation plant, pressure-variable adsorption or vacuum absorption device, but is not limited to these devices.
As shown in Figure 5-Figure 7, disclose the spray gun 300 of the third embodiment of the present utility model, the swirl-flow devices 306 of this spray gun 300 is all different from the structure of the swirl-flow devices of aforementioned spray gun.This spray gun 300 has inner tube 302, outer tube 304 and swirl-flow devices 306.Inner tube 302 is arranged in outer tube 304, and this inner tube 302 defines the first channel 307 for delivery of fuel, and this outer tube 304 and inner tube 302 define the second passage 308 for delivery of combustion-supporting gas between outer tube 304 and inner tube 302.Swirl-flow devices 306 is configured to be communicated with second passage 308 fluids, thereby the combustion-supporting gas that is used for making second passage 308 ejects from the outlet of spray gun 300 fuel that ejects with the outlet from spray gun 300 rotatably, fully mixes.
Particularly, this swirl-flow devices 306 is the inlet pipe to second passage 308 supply combustion-supporting gases, this inlet pipe is connected on outer tube 304 and is configured to make the combustion-supporting gas of inlet pipe to flow in second passage 308 with the substantially tangent direction of the internal surface with outer tube 304, and is separated with predetermined length between the outlet of the entrance of inlet pipe and spray gun 300.
More specifically, this inlet pipe can be soldered on outer tube 304.In addition, also can be used as outer tube 304 and inlet pipe with the manifold with two branches.In any case, thereby inlet pipe and outer tube 304 radially outer tube wall separately should be the tangent combustion-supporting gas of inlet pipe that can make, with the substantially tangent direction of the internal surface with outer tube 304, flow in second passage 308.Usually, the angle β 3 between this inlet pipe and outer tube 304 air flow stream Inbound can be between 90 °-135 °.
More specifically, the internal surface of the exit end of this outer tube 304 is inside gradually-reducing shape, and its taper angle α 3 is approximately 5 °-45 °, is more preferably 10 °-30 °.
In the present embodiment, combustion-supporting gas can be for concentration greater than 21% oxygen, and more preferably, the concentration of this oxygen can be 80%-100%.Oxygen can derive from liquid oxygen storage tank, air separation plant, pressure-variable adsorption or vacuum absorption device, but is not limited to these devices.
As shown in Figure 8, the invention also discloses a kind of smelting furnace 400, this smelting furnace 400 can be the shaft furnace of blast furnace, blast furnace or cupola furnace.
Particularly, this smelting furnace 400 has furnace wall 402 and is used for passing furnace wall 402 and supplies with the tuyere small sleeve 404 of hot-blasts.Air port passage 406 passes tuyere small sleeve 404.Airduct 408 structure and arrange wind or warm-air supply to air port passage 406 and be blown in the furnace chamber of smelting furnace 400.In addition, also have spray gun 410 as described in aforementioned each embodiment, it is used for fuel (normally coal dust) and combustion-supporting gas (being generally certain density oxygen) are supplied to smelting furnace 400.
The above-mentioned detailed concrete illustrative embodiments of description references has been described the utility model.Yet, be appreciated that and can make various modifications and variations not breaking away under the protection domain prerequisite of claim of the present utility model.It is only exemplary that specific description and accompanying drawing are regarded as, rather than restrictive, and all possible this modifications and variations, all is considered to fall into as previously mentioned also protection domain of the present utility model defined in this.
Claims (21)
1. a spray gun that is used for smelting furnace, is characterized in that, described spray gun comprises:
Outer tube and inner tube, described inner tube are arranged in described outer tube, and described inner tube defines the first channel for delivery of fuel, and described outer tube and described inner tube define the second passage for delivery of combustion-supporting gas between described outer tube and described inner tube; And
Swirl-flow devices, it is configured to be communicated with described second passage fluid, thereby the described combustion-supporting gas that is used for making described second passage ejects from the outlet of described spray gun the fuel that ejects with the outlet from described spray gun rotatably, fully mixes.
2. spray gun according to claim 1, it is characterized in that, described swirl-flow devices is the inlet pipe to the described combustion-supporting gas of described second passage supply, described inlet pipe is connected on described outer tube and is configured to make the combustion-supporting gas of described inlet pipe to flow in described second passage with the substantially tangent direction of the internal surface with described outer tube, and is separated with predetermined length between the outlet of the entrance of described inlet pipe and described spray gun.
3. spray gun according to claim 1, it is characterized in that, described swirl-flow devices is the termination installation parts, described outer tube and described inner tube define mounting portion jointly in the end that is positioned at downstream, described termination installation parts is arranged on described mounting portion, described termination installation parts has longitudinal hole and at least one helical channel that extends around described longitudinal hole in the vertical, described longitudinal hole is aimed at described first channel to allow described fuel to flow out via described longitudinal hole, described at least one helical channel is configured to be communicated with described second passage fluid.
4. spray gun according to claim 3, it is characterized in that, described at least one helical channel is arranged on the outside surface of described termination installation parts, and described termination installation parts is arranged between described outer tube and inner tube so that the internal surface of its outside surface and described outer tube is suitable and make described inner tube by described longitudinal hole.
5. spray gun according to claim 3, it is characterized in that, described termination installation parts comprises main body and sleeve, described at least one helical channel is arranged on the outside surface of described main body, described longitudinal hole connects described main body, and described jacket casing is on described main body and described sleeve and described outer tube Fluid Sealing.
6. according to claim 2 or 4 described spray guns, is characterized in that, the internal surface of the exit end of described outer tube is inside gradually-reducing shape.
7. spray gun according to claim 6, is characterized in that, the taper angle of the internal surface of the exit end of described outer tube is 5 °-45 °.
8. spray gun according to claim 7, is characterized in that, the taper angle of the internal surface of the exit end of described outer tube is 10 °-30 °.
9. spray gun according to claim 5, is characterized in that, the internal surface of the exit end of described sleeve is inside gradually-reducing shape.
10. spray gun according to claim 9, is characterized in that, the taper angle of the internal surface of the exit end of described sleeve is 5 °-45 °.
11. spray gun according to claim 10, is characterized in that, the taper angle of the internal surface of the exit end of described sleeve is 10 °-30 °.
12. spray gun according to claim 4, is characterized in that, at the outlet side of described spray gun, the described inner tube of described outer tube extend through is so that the exit end face of the exit end face of described outer tube and described inner tube is spaced apart.
13. according to claim 3-5 described spray guns of any one is characterized in that described helical channel has inlet end and exit end, described helical channel is at the cross-sectional area of the opening of the inlet end cross-sectional area greater than the opening at exit end.
14. according to claim 3-5 described spray guns of any one, is characterized in that, the eddy flow angle of described helical channel is 25 °-65 °.
15. spray gun according to claim 14, is characterized in that, the eddy flow angle of described helical channel is 35 °-45 °.
16. according to claim 1-5 described spray guns of any one, is characterized in that, described combustion-supporting gas is concentration greater than 21% oxygen.
17. spray gun according to claim 16, is characterized in that, the concentration of described oxygen is 80%-100%.
18. spray gun according to claim 2, is characterized in that, the angle of described inlet pipe and described outer tube is 90 °-135 °.
19. according to claim 1-5 described spray guns of any one is characterized in that described smelting furnace is the shaft furnace of blast furnace or blast furnace or cupola furnace.
20. a smelting furnace, is characterized in that, described smelting furnace comprises as the described spray gun of claim 1-19 any one.
21. smelting furnace according to claim 20, is characterized in that, described combustion-supporting gas comes from the source of oxygen that is communicated with described spray gun fluid, and wherein, described source of oxygen comprises liquid oxygen storage tank, air separation plant, pressure-variable adsorption or vacuum absorption device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013202552958U CN203284415U (en) | 2013-04-28 | 2013-04-28 | Spray gun and smelting furnace adopting same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202552958U CN203284415U (en) | 2013-04-28 | 2013-04-28 | Spray gun and smelting furnace adopting same |
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| CN203284415U true CN203284415U (en) | 2013-11-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106733276A (en) * | 2016-11-16 | 2017-05-31 | 信义玻璃（营口）有限公司 | A kind of heavy oil combustion spray gun and the stove with the spray gun |
| CN106830068A (en) * | 2015-12-04 | 2017-06-13 | 云南冶金新立钛业有限公司 | Toluene spray gun and Titanium Dioxide Produced by Chloride Procedure production line |
| CN108975915A (en) * | 2018-08-23 | 2018-12-11 | 索通发展股份有限公司 | The technique of prebaked anode production process minimum discharge |
| CN111621609A (en) * | 2020-07-20 | 2020-09-04 | 四川冶金设备开发有限公司 | Energy-saving blast furnace coal powder spray gun |
| CN111804490A (en) * | 2020-07-31 | 2020-10-23 | 南通冠东模塑股份有限公司 | Blowing device |
| CN112683074A (en) * | 2020-12-16 | 2021-04-20 | 铜陵德兴机械制造有限责任公司 | Top-blown furnace spray gun and special maintenance method thereof |
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2013
- 2013-04-28 CN CN2013202552958U patent/CN203284415U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106830068A (en) * | 2015-12-04 | 2017-06-13 | 云南冶金新立钛业有限公司 | Toluene spray gun and Titanium Dioxide Produced by Chloride Procedure production line |
| CN106733276A (en) * | 2016-11-16 | 2017-05-31 | 信义玻璃（营口）有限公司 | A kind of heavy oil combustion spray gun and the stove with the spray gun |
| CN106733276B (en) * | 2016-11-16 | 2022-07-26 | 信义玻璃（营口）有限公司 | Heavy oil combustion spray gun and furnace kiln with same |
| CN108975915A (en) * | 2018-08-23 | 2018-12-11 | 索通发展股份有限公司 | The technique of prebaked anode production process minimum discharge |
| CN108975915B (en) * | 2018-08-23 | 2021-05-18 | 索通发展股份有限公司 | Process for producing prebaked anode with ultralow emission |
| CN111621609A (en) * | 2020-07-20 | 2020-09-04 | 四川冶金设备开发有限公司 | Energy-saving blast furnace coal powder spray gun |
| CN111804490A (en) * | 2020-07-31 | 2020-10-23 | 南通冠东模塑股份有限公司 | Blowing device |
| CN112683074A (en) * | 2020-12-16 | 2021-04-20 | 铜陵德兴机械制造有限责任公司 | Top-blown furnace spray gun and special maintenance method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20190428 |