CN2137574Y - Quick-baking device for ladle - Google Patents
Quick-baking device for ladle Download PDFInfo
- Publication number
- CN2137574Y CN2137574Y CN91215241U CN91215241U CN2137574Y CN 2137574 Y CN2137574 Y CN 2137574Y CN 91215241 U CN91215241 U CN 91215241U CN 91215241 U CN91215241 U CN 91215241U CN 2137574 Y CN2137574 Y CN 2137574Y
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- China
- Prior art keywords
- nozzle
- compressed air
- center line
- ladle
- flue
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- Expired - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Pre-Mixing And Non-Premixing Gas Burner (AREA)
Abstract
The utility model relates to a quick-baking device for a steel ladle, comprising a nozzle, a fuel oil pipe, a compressed air pipe, an air channel for compressed air, a fuel gas pipe, and an oxygen-enriched gas pipe; the outer surface of the nozzle has a spiral body; the fuel oil pipe is communicated with the nozzle; the compressed air pipe is sheathed outside the nozzle and the fuel oil pipe; the air channel for compressed air is arranged among the nozzle, the fuel oil pipe, and the compressed air pipe; a spiral-shaped air channel is arranged in the air channel for compressed air; the fuel gas pipe and the oxygen-enriched gas pipe are sheathed outside the air channel for compressed air in sequence. The fuel oil and the compressed air respectively enter a nozzle mixing chamber from the inlet of the nozzle and a plurality of through holes on the inlet of the nozzle to increase the atomizing degree of the fuel oil. Meanwhile, the compressed air is sprayed to the outlet part of the nozzle through the spiral air channel. Thereby, the length of flame and the mixing degree of the fuel oil or the fuel gas and the compressed air are increased. And the nozzle can be cooled. The cross section and the dynamics of the flame are increased obviously by the oxygen-enriched gas. The baking time of the steel ladle can be shortened by 5-6 times through using the utility model. The service life of the nozzle is extended. The fuel gas can be saved by 20% or the fuel oil can be saved by 40%.
Description
The utility model relates to a kind of flame gun, and the same device of particularly a kind of usefulness can use combustion gas or fuel oil respectively, with the flash baking device with flame preheating ladle and tundish etc.
The ladle baking facilities that uses on metallurgy industry at present has combustion type and fuel oil type two classes, its structure as illustrated in fig. 1 and 2, the former comprises gas inlet pipe 1, compressed air inlet pipe 2, the nozzle 7 of Gas Pipe 4 and venturi-type, compressed air hose 5, cooling water pipe 3 and cooling jacket 6; The latter comprises shower nozzle 1, fuel injection nozzle 2, reducer tee 3 and fuel pipe 4 etc.Because the composition and the pressure oscillation of the combustion gas (as coal gas of converter) of steel mill are bigger, so can not satisfy the requirement of stablizing air feed sometimes, need use fuel oil (heavy oil and light oil) formula device this moment instead, factory quite feels inconvenience to this situation that is used alternatingly two kinds of devices, very wish to have a kind of get it two and generation, the apparatus for baking that can use combustion gas or fuel oil with same device respectively.In addition, above-mentioned two kinds of devices also have following shortcoming: one, the structural design of these two kinds of devices has determined that the length of jet flames is not enough, and the firepower deficiency can't be sprayed onto ladle bottom, first half flame is the state of flying away, most of heat rests on the ladle first half, so that ladle is heated is irregular, the top and the bottom temperature difference can reach more than 300 ℃, and the bottom heating is not enough, influences normally carrying out of casting process; Its two, the combustion type device adopts water cooling to protect nozzle and associated components (as shown in Figure 1) thereof, so make the big and heaviness of package unit volume, and easily leaks, cooling water has been taken away the part heat again; They are three years old, these two kinds of devices all do not have the combustion-supporting means of oxygen rich air, as combustion type device with comburant oxygen, because oxygen flow generally can not be very big, so and the undercompounding of combustion gas, influence fully combustion is watered, flame is kermesinus, black smoke is arranged, and, also have same problem because of oxygen content is low with the combustion type device of compressed air combustion-supporting; Make fuel-oil atmozation and make combustion-supporting fuel oil type device with compressed air, fuel oil and compressed air only mix in the exit, thereby the fuel-oil atmozation degree is relatively poor, and the flame pencil instability of ejaculation has black smoke.In addition, same because compressed air is made combustion-supporting gas and also do not satisfied clean-burning requirement, so the thermic load of device is low, and oil consumption is higher.
At the problem of above-mentioned existence, the purpose of this utility model is that a kind of ladle baking facilities will be provided, and makes fuel with same such device both useable fuel, can use combustion gas again instead and make fuel; In addition, adopt a kind of improved nozzle in this device, the length of flame and cross section that its is sprayed all increase to some extent, and can save water cooling and reach the purpose of reduction means volume and weight;
Another purpose of the present utility model is except doing the combustion-supporting medium with compressed air, also increase the combustion-supporting gas-supplying structure of an oxygen rich air, the thermic load of whole device being improved.
For achieving the above object, a kind of ladle flash baking device that the utility model provides comprises that one has the nozzle of an inlet and an outlet, one is communicated with the hollow fuel pipe that links to each other with nozzle center line coaxial line and with nozzle inlet, one with nozzle and fuel pipe central axis and turn up the soil at interval and be enclosed within nozzle and the outer hollow compressed air hose of fuel pipe altogether, between nozzle, fuel pipe and compressed air hose, to form a compressed air air flue; This device also comprises one with above-mentioned center line coaxial line and turn up the soil at interval and be sleeved on the outer hollow Gas Pipe of compressed air hose, between compressed air hose and Gas Pipe, to form a gas flue, the exit end face of above-mentioned compressed air air flue and gas flue all flushes substantially with the nozzle exit end face, and that section by nozzle of above-mentioned compressed air air flue then is the helical form air flue around above-mentioned center line; In addition, above-mentioned nozzle have one according to its center and the mixing chamber that is communicated with its inlet and at least three along the through hole nozzle radial equipartition, that be communicated with compressed air air flue and mixing chamber, that tilt to above-mentioned center line, wherein mixing chamber is one to export dolioform cavity that the constriction that from centre part to nozzle export of a side form to the expansion of mid portion and by nozzle from the nozzle inlet by the nozzle inlet side by a large diameter mid portion.
Specifically, when stating inventive concept on the implementation, that helical form air flue part of the compressed air air flue in the above-mentioned apparatus for baking can be apparent by nozzle, surrounded around the helical form part of the above-mentioned center line inwall with compressed air hose; Perhaps, compressed air hose made by two parts form, wherein the length of first is substantially equal to the length of nozzle, the inside and outside footpath of its second portion and equating of first, the one helical form part around above-mentioned center line is arranged on the inwall of first, and the outer wall corresponding to that section of mixing chamber of nozzle is made the face of cylinder, surrounds one section helical form air flue between it and the first.
In addition, through evidence, above-mentioned through hole is advisable with 40 °～50 ° with respect to the inclination angle of nozzle center line.
According to of the present utility model a design arranged again, on the basis of apparatus for baking with said structure design, can set up an oxygen-enriched air supply part, specifically, can a more hollow oxygen enrichment tracheae be sleeved on outside the above-mentioned Gas Pipe spaced apartly, to form an oxygen rich air air flue between it and the Gas Pipe, the port of export of this air flue flushes substantially with the port of export of above-mentioned all air flues, and, also can load onto one at its port of export and make the contractile ring that shrinks gradually of outlet internal diameter, promote mixing of oxygen rich air and combustion gas to form the action of turbulent flow of oxygen rich air at this outlet area.
Design feature, advantage and the purpose of this utility model of this apparatus for baking that foregoing invention design is related will be by becoming more clear to the description of following embodiment and to its description of the drawings.
Appended accompanying drawing comprises:
Fig. 1 is the structural representation of existing combustion type apparatus for baking;
Fig. 2 is the structural representation of existing fuel oil type apparatus for baking;
Fig. 3 is the primary structure schematic diagram (remainder is disconnected and does not express) of an embodiment of the utility model flash baking device;
Fig. 4 is the primary structure schematic diagram (remainder is disconnected and does not express) of the another embodiment of the utility model flash baking device; And
Fig. 5 is the outline drawing with device of structure shown in Figure 4.
As shown in Figure 3, the part of the flash baking device shown in this embodiment and structure thereof are as follows:
One nozzle 20, it has an inlet 204 and one outlet 205 of extending along its center line 9.The portion center also has a mixing chamber 203 that is dolioform cavity within it, and it exports from centre part to nozzle the exporting 205 contraction (toroidal of inverted) partly form of 205 sides from nozzle inlet 204 expansions to mid portion (toroidal) part and by nozzle by what nozzle entered the mouth 204 sides by a large diameter cylindric mid portion.The one helical form part 7 around its center line 9 is arranged on its outer circumference surface; Have at least three on its cone part near its inlet 204, as four through holes 202 along its radial equipartition, these through holes are interlinked to the outside mixing chamber 203 and nozzle, and tilt towards center line 9, and its inclination alpha is advisable with 40 °～50 °;
One hollow fuel pipe 8, it and nozzle center line 9 coaxial lines, and the earthings that link to each other with nozzle inlet 204 are connected;
One hollow compressed air hose 60, it and nozzle 20 and fuel pipe 8 be center line altogether, and turns up the soil at interval and be sleeved on outside nozzle 20 and the fuel pipe 8, and its outlet is shunk inwards, and the basic and nozzle of exit end face exports 205 end face.This pipe can design and produce by two kinds of situations; First kind of situation, make compressed air hose 60 single, like this, after it is sleeved on Gas Pipe 8 outsides, it is near formation one helical form air flue between the inwall of the preceding part of nozzle 20 and above-mentioned nozzle 20 appearances with a helical form part 7, the straight air flue that forms between the latter part of inwall of this helical form air flue and compressed air hose 60 and the Gas Pipe 8 communicates, and forms a compressed air air flue totally by " 10 " expression, to send into compressed air.From the above: this air flue is connected with nozzle mixing chamber 203 through through hole 202; Second kind of situation, compressed air hose 60 can be made two-stage structure, its, length was substantially equal to the length of nozzle 20 the last periods 62, process a helical form part 7 around center line 9 on the inwall of this section 62, and that section external peripheral surface corresponding to mixing chamber 203 of the nozzle 20 of this moment is processed as the face of cylinder, so that form a helical form air flue between nozzle 20 and this section 62, then one section 61 still be one with straight hollow pipe that the last periods 62, inside and outside footpath equated, equally, form a compressed air air flue 10; And
One hollow Gas Pipe 4, it also is total to center line with above-mentioned center line 9, and turning up the soil at interval is sleeved on outside the compressed air hose 60, and its exit end face also exports 205 end face with nozzle basically, and this port of export also can be made the closing in (not expressing on the figure) of slightly shrinking inwards.Form a gas flue 40 between it and the compressed air hose 60, to send into combustion gas.
In above-mentioned fuel pipe 8 or Gas Pipe 4 and the compressed air hose 60, fuel oil oil inlet pipe 80 by the valve (not shown) respectively is housed or gas inlet pipe 90 and compressed air air inlet visitor 100(see Fig. 5) send into fuel oil or combustion gas and compressed air inwards, and converge and the living flame that ignited in nozzle 20 outlet vicinity.
Now see Fig. 4.The primary structure of another embodiment of the utility model shown in this figure, with shown in Figure 3 roughly the same, only outside Gas Pipe 4, put a hollow oxygen enrichment tracheae 3 again, it is a central axis with " 9 " with above-mentioned each pipe together also, and spaced apart with Gas Pipe 4, to form an oxygen rich air air flue 30 between it and the Gas Pipe 4.The one ring-type contractile ring 1 with an oblique inwards outstanding flange 100 is housed on the port of export of this pipe, thereby the internal diameter in oxygen enrichment tracheae 3 exits is diminished by wash rice, forming certain turbulent flow from when ejection outlet, and promote oxygen rich air and combustion gas or fuel oil, compressed-air actuatedly fully mix when oxygen rich air.In addition, as shown in Figure 5, in oxygen enrichment tracheae 3, send into oxygen rich air, and converge the living flame that also ignited in nozzle 20 outlet vicinity and above-mentioned other combustion medium by an oxygen rich air air inlet pipe 70 that the valve (not shown) is housed.
Fig. 5 has represented the profile of a kind of apparatus for baking in back of the present utility model in the structural representation mode.Obviously, last embodiment described device profile is a kind of similar substantially to the back, has only lacked an oxygen enrichment tracheae (not drawing in addition) that is enclosed within foreign side.
When using the utility model apparatus for baking,, open the valve in fuel oil, oil inlet pipe or the gas inlet pipe and use fuel oil or combustion gas, so just can reach same device and use wherein a kind of fuel and the purpose of two kinds of fuel of dual-purpose separately as long as according to user's needs.Obviously, this device is unfavorable for thereby does not advise using simultaneously two kinds of fuel, otherwise will bring difficulty to the flame tissue.
After the important technological parameters of the technological parameter of rationally selecting above-mentioned each combustion medium for use and above-mentioned nozzle, this device can obtain good result, after tested, the length of flame rises appreciably, can reach 2 meters, and flame cross section and dynamics all there is improvement, thereby saved the ladle baking time.The combustion type device baking heat bag of prior art needs 4-5 hour, fuel oil type 2-3 hour.And this device when using combustion gas baking heat bag only need 1 hour, when using fuel oil, baking heat bag only needs 40 minutes.In addition, when using fuel oil, oil consumption 40% can be reduced, combustion gas 20% can be saved when using combustion gas.Why like this, mainly be because the advantage that following principle is brought:
One, the through hole of nozzle, mixing chamber and spiral air channel have obviously improved combustion efficiency. When using fuel oil, fuel oil is expanded after the nozzle entrance enters mixing chamber. Meanwhile, compressed air is from four through holes along the oblique mixing chamber that sprays into, with the fuel oil impingement mix, oil droplet with compressed-air actuated mutual collision under by gradually refinement, spray then the nozzle outlet, mix at the exit atomized fuel with through the compressed air that helical intake sprays, owing to have along the compressed air of helical intake ejection usefulness mixed up in strong the revolving from the mixed liquor of the Partial shrinkage air of mixing chamber ejection and fuel oil, so improved their mixed effect, guaranteed length and the dynamics of flame; Another kind of situation, when namely using combustion gas such as coal gas, the injection mixed process of coal gas is the process of coal gas molecular diffusion motion, in diffusion process with along under the bump of the swirling eddy of spiral air channel ejection, well spread between coal gas and the compressed air. When the jet velocity of flame inlet zone reached certain value, it was that mixed effect is better that the diffusion between the combustion medium is also just healed strong. Add the proportioning between choose reasonable coal gas and air, just can reach basic completing combustion.
They are two years old, as mentioned above, owing to adopted spiral air channel, so the compressed air itself of advancing along helix plays cooling effect to nozzle, and because of the heat of having taken away nozzle so that the compressed air to heat up, this part heat is used for again combustion process again, so there is not the disadvantage of taking away the part heat with cooling water of the prior art. Fact proved, because the cooling protection effect is prolonged the nozzle life-span, be six months.
Its three, after increasing oxygen rich air and making combustion-supporting gas, avoided the generation black smoke on the one hand, improved the thermic load of fuel, accelerate the programming rate of ladle; On the other hand, after the adding oxygen rich air, the cross section of flame, dynamics and jet velocity all are improved. In addition, owing to increased contractile ring in oxygen enrichment tracheae exit, so the turbulent flow of the oxygen rich air that the exit produces has promoted again coal gas or fuel oil and compressed-air actuated mixing, thereby improve flame cross section and dynamics.
Claims (12)
1, a kind of ladle flash baking device comprises that one has the nozzle 20 of an inlet 204 and one outlet 205, one is communicated with the hollow fuel pipe 8 that links to each other with nozzle center line 9 coaxial lines and with nozzle inlet 204, one with nozzle 20 and fuel pipe 8 altogether central axis and turning up the soil at interval be enclosed within the outer hollow compressed air hose 60 of nozzle 20 and fuel pipe 8, with at nozzle 20, form a compressed air air flue 10 between fuel pipe 8 and the compressed air hose 60, it is characterized in that, also comprise one with described center line 9 coaxial lines and turn up the soil at interval and be sleeved on the outer hollow Gas Pipe 4 of described compressed air hose 60, between described compressed air hose 60 and described Gas Pipe 4, to form a gas flue 40, the exit end face of described compressed air air flue 10 and gas flue 40 all flushes substantially with the end face of described nozzle outlet 205, and that section by described nozzle 20 of described compressed air air flue 10 then is the helical form air flue around described center line 9; Described nozzle 20 have one according to its center and the mixing chamber 203 that is communicated with its inlet 204 and at least three along through hole 202 described nozzle 20 radial equipartitions, that be communicated with described compressed air air flue 10 and described mixing chamber 203, that tilt to described center line 9, described mixing chamber 203 is one to export the dolioform cavity from centre part to the constriction of described nozzle outlet 205 formed of 205 one sides to the expansions of mid portion and by described nozzle from described nozzle inlet 204 by what described nozzle entered the mouth 204 1 sides by a large diameter mid portion.
2, ladle flash baking device as claimed in claim 1, it is characterized in that, described compressed air air flue 10 by that section helical form air flue of described nozzle 20 be 20 apparent by described nozzle, surrounded around the helical form part 7 of described center line 9 inwall with described compressed air hose 60.
3, ladle flash baking device as claimed in claim 1, it is characterized in that, described compressed air hose 60 is substantially equal to by a segment length in the first 62 of length of described nozzle 20 and one section, the second portion 61 that external diameter equates with described first 62 is formed, the one helical form part 7 around described center line 9 is arranged on the inwall of described first 62, the outer wall corresponding to that section of described mixing chamber 203 of described nozzle 20 is the face of cylinder, it and have the helical form section that surrounds described compressed air air flue 10 between the described first 62 of described helical form part 7.
4, ladle flash baking device as claimed in claim 1 is characterized in that, the through hole 202 on the described nozzle 20 has four.
As claim 1 or 4 described ladle flash baking devices, it is characterized in that 5, described through hole 202 is advisable with 40 °～50 ° with respect to the inclination alpha of described nozzle center line 9.
6, a kind of ladle flash baking device comprises that one has the nozzle 20 of an inlet 204 and one outlet 205, one is communicated with the hollow fuel pipe 8 that links to each other with nozzle center line 9 coaxial lines and with nozzle inlet 204, one with nozzle 20 and fuel pipe 8 altogether central axis and turning up the soil at interval be enclosed within the outer hollow compressed air hose 60 of nozzle 20 and fuel pipe 8, with at nozzle 20, form a compressed air air flue 10 between fuel pipe 8 and the compressed air hose 60, it is characterized in that, also comprise and described center line 9 coaxial lines, and outside described compressed air hose 60 the turn up the soil hollow Gas Pipe 4 and the hollow oxygen enrichment tracheae 3 of suit of each interval successively, to form a gas flue 40 and an oxygen rich air air flue 30 between described compressed air hose 60 and the described Gas Pipe 4 and between described Gas Pipe 4 and the described oxygen enrichment tracheae 3 respectively, described compressed air air flue 10, the exit end face of gas flue 40 and oxygen rich air air flue 30 all exports 205 end faces with described nozzle and flushes substantially, and that section of the close described nozzle 20 of described compressed air air flue 10 then is the helical form air flue around described center line 9; Described nozzle 20 have one according to its center and the mixing chamber 203 that is communicated with its inlet 204 and at least three along described nozzle 20 radial equipartitions, be communicated with described compressed air air flue 10 and described mixing chamber 203, to the through holes 202 that described and center line 9 tilts, described mixing chamber 203 is one to export the dolioform cavity from centre part to the constriction of described nozzle outlet 205 formed of 205 one sides to the expansions of mid portion and by described nozzle from described nozzle inlet 204 by what described nozzle entered the mouth 204 1 sides by a large diameter mid portion.
7, ladle flash baking device as claimed in claim 6, it is characterized in that, the port of export at described oxygen enrichment tracheae 3 also includes a ring-type contractile ring 1, and it has an oblique inwards outstanding flange 100, thereby described oxygen enrichment tracheae exit internal diameter is diminished by wash rice.
8, as claim 6 or 7 described ladle flash baking devices, it is characterized in that, described compressed air air flue 10 by that section helical form air flue of described nozzle 20, be 20 apparent by described nozzle, surrounded around the helical form part 7 of described center line 9 inwall with described compressed air hose 60.
9, want 6 or 7 described ladle flash baking devices as right, it is characterized in that, described compressed air hose 60 is substantially equal to by a segment length in the first 62 of length of described nozzle 20 and one section, the second portion 61 that external diameter equates with described first is formed, the one helical form part 7 around described center line 9 is arranged on the inwall of described first 62, the outer wall corresponding to that section of described mixing chamber 203 of described nozzle 20 is the face of cylinder, it and have the helical form section that surrounds described compressed air air flue 10 between the described first 62 of described helical form part 7.
10, as claim 6 or 7 described ladle flash baking devices, it is characterized in that the through hole 202 on the described nozzle 20 has four.
As claim 6 or 7 described ladle flash baking devices, it is characterized in that 11, described through hole 202 is advisable with 40 °～50 ° with respect to the inclination alpha of described nozzle center line 9.
12, ladle flash baking device as claimed in claim 10 is characterized in that, described through hole 202 is advisable with 40 °～50 ° with respect to the inclination alpha of described nozzle central axis 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91215241U CN2137574Y (en) | 1991-03-20 | 1991-03-20 | Quick-baking device for ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91215241U CN2137574Y (en) | 1991-03-20 | 1991-03-20 | Quick-baking device for ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2137574Y true CN2137574Y (en) | 1993-07-07 |
Family
ID=33760083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91215241U Expired - Lifetime CN2137574Y (en) | 1991-03-20 | 1991-03-20 | Quick-baking device for ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2137574Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402193C (en) * | 2004-05-18 | 2008-07-16 | 深圳派瑞科冶金材料有限公司 | Liquid metal container bottom heating device and application thereof |
| CN102806344A (en) * | 2012-09-06 | 2012-12-05 | 北京志能祥赢节能环保科技有限公司 | Oxygen-enriched ladle baking device by using low calorific value blast furnace coal gas |
| CN103522118A (en) * | 2013-09-26 | 2014-01-22 | 上海金兆节能科技有限公司 | Nested type three-phase mixing nozzle of water, oil and gas and nozzle system with same |
| CN103791501A (en) * | 2012-10-31 | 2014-05-14 | 重庆思微新能源有限公司 | Nozzle for alcohol fuel and natural gas |
| CN104132338A (en) * | 2014-06-12 | 2014-11-05 | 北京中天元环境工程有限责任公司 | Fuel nozzle and combustor |
| CN105066130A (en) * | 2015-08-21 | 2015-11-18 | 哈尔滨工业大学 | Spiral cyclone and combustion device comprising same |
| CN105605570A (en) * | 2016-03-14 | 2016-05-25 | 中南大学 | Rotational flow and return flow combined type oil atomization burner |
| CN107030275A (en) * | 2017-05-22 | 2017-08-11 | 江西铜业股份有限公司 | One kind baking gun apparatus |
-
1991
- 1991-03-20 CN CN91215241U patent/CN2137574Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402193C (en) * | 2004-05-18 | 2008-07-16 | 深圳派瑞科冶金材料有限公司 | Liquid metal container bottom heating device and application thereof |
| CN102806344A (en) * | 2012-09-06 | 2012-12-05 | 北京志能祥赢节能环保科技有限公司 | Oxygen-enriched ladle baking device by using low calorific value blast furnace coal gas |
| CN102806344B (en) * | 2012-09-06 | 2014-11-19 | 北京志能祥赢节能环保科技有限公司 | Oxygen-enriched ladle baking device by using low calorific value blast furnace coal gas |
| CN103791501A (en) * | 2012-10-31 | 2014-05-14 | 重庆思微新能源有限公司 | Nozzle for alcohol fuel and natural gas |
| CN103522118A (en) * | 2013-09-26 | 2014-01-22 | 上海金兆节能科技有限公司 | Nested type three-phase mixing nozzle of water, oil and gas and nozzle system with same |
| CN104132338A (en) * | 2014-06-12 | 2014-11-05 | 北京中天元环境工程有限责任公司 | Fuel nozzle and combustor |
| CN104132338B (en) * | 2014-06-12 | 2017-01-25 | 北京中天元环境工程有限责任公司 | Fuel nozzle and combustor |
| CN105066130A (en) * | 2015-08-21 | 2015-11-18 | 哈尔滨工业大学 | Spiral cyclone and combustion device comprising same |
| CN105605570A (en) * | 2016-03-14 | 2016-05-25 | 中南大学 | Rotational flow and return flow combined type oil atomization burner |
| CN107030275A (en) * | 2017-05-22 | 2017-08-11 | 江西铜业股份有限公司 | One kind baking gun apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |