CN87210470U - High-temperature vertical kilm fuel-oil nozzle - Google Patents
High-temperature vertical kilm fuel-oil nozzle Download PDFInfo
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- CN87210470U CN87210470U CN 87210470 CN87210470U CN87210470U CN 87210470 U CN87210470 U CN 87210470U CN 87210470 CN87210470 CN 87210470 CN 87210470 U CN87210470 U CN 87210470U CN 87210470 U CN87210470 U CN 87210470U
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- high temperature
- oil
- burner
- primary atomization
- air mouth
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Abstract
The utility model discloses a high temperature vertical kiln fuel oil nozzle which belongs to an exclusive used burning apparatus for high temperature technique, and the high temperature vertical kiln fuel oil nozzle is suitable calcining high purity fireproof raw material in the high temperature of 1900-2000DEG C. The nozzle of the utility model comprises a body which is provided with a double-layer spraying air tube and a spray cup which is provided with a mixing chamber and an injecting structure, so the utility model can accomplish high temperature calcination in a high temperature vertical kiln. The spraying degree is high, the ability of the fuel oil penetrating the material layer is strong, and the utility model has the advantages of high speed and high quality. Therefore, the burning is completely, the calcination is uniform, and the utility model eliminates the phenomenon of oil storing and coking at the nozzle. The total required air amount is little, the air coefficient in the kiln is small, so the utility model is an ideal energy-saving type high temperature vertical kiln fuel oil nozzle.
Description
The present invention relates to a kind of high temperature vertical kiln oil burner, is to belong to the special-purpose combustion apparatus of high-temperature technology, and it is used in the high-purity refractory raw material of calcining under 1900～2000 ℃ of high temperature.
China also was not exclusively used in the oil burner of high temperature vertical kiln before the present invention.
Learn that according to information obtained during abroad survey the employed RCE oil burner of Austrian high temperature vertical kiln is telescopic, directly sprays primary atomization, oil gas undercompounding is so fogging degree is poor; The required air total amount of burner atomizing is more, and the furnace air coefficient is big, so very unfavorable to the high-temperature calcination that realizes shaft furnace.
In the shaft furnace because be full of material, make fuel oil in the bed of material that does not almost have the combustion space rapidly and completing combustion, this is that modern general-purpose industrial stove oil burner institute is inefficient.
In view of the foregoing, the objective of the invention is to design a kind of new-type energy-saving oil burner.This burner can make fully atomizing of oil, and fuel oil penetrates that bed of material ability is strong, and speed is fast, so fuel oil can burning rapidly and fully in the bed of material that fills up; Calcining is even, so the product quality height owing to reduced atomizing space tolerance, can utilize the high temperature air (being secondary combustion air) that is heated by high temperature chamotte fully, thereby realize high-temperature calcination.
For realizing this purpose, the measure that the present invention takes is that the high temperature vertical kiln oil burner is designed to mix structure in the atomizing of secondary high-pressure air swirl, form by body and two parts of shower nozzle, (1) outside of the oil inlet pipe in body is provided with two-layer atomized air tube, fuel oil is subjected to impacting from the high pressure draught that the primary atomization air hose comes out in an exit, has formed " primary atomization ".(2) be provided with shower nozzle in the front of body, be guarantee " primary atomization ", the atomizer in the shower nozzle is designed to horn-like, thereby guaranteed that the atomizing medium air-flow that penetrates penetrates effectively on the stream thigh of oil; Primary atomization air nozzle in the shower nozzle is designed to reducing shape, will forms and rotate the primary atomization air-flow at a high speed.In shower nozzle, between primary atomization air mouth and secondary-atomizing air mouth, also be provided with mixing chamber, be used for fully mixing oil and air behind the primary atomization, form the milkiness mixed liquor; Mixing chamber also is designed to reducing shape near a side of secondary-atomizing air mouth, can makes mixed liquor become the liquid stream of rotation at a high speed on the one hand, expand suddenly in the time of on the one hand mixed liquor spray in the secondary exit and make oil film impact grinding, formation " secondary-atomizing ".And the ejiction opening (secondary-atomizing air mouth) of shower nozzle is designed to ejection structure, eliminated general burner nozzle memory clogging, guaranteed the adjusting flexibility and the operational reliability of burner.
High temperature vertical kiln oil burner of the present invention can explain detailedly by drawings and Examples.
Fig. 1 always schemes for high temperature vertical kiln oil burner structure.
Fig. 2 is (I) side view of high temperature vertical kiln oil burner shower nozzle, (II) structure chart (III) cutaway view.
Fig. 3 is the fundamental diagram of high temperature vertical kiln oil burner.
Fig. 4 is that the high temperature vertical kiln oil burner is at 3.5m
3Work system figure on the test high temperature vertical kiln.
As shown in Figure 1, the high temperature vertical kiln oil burner is dimerous by body (11) and shower nozzle (12).Body (11) is made up of (1) oil inlet pipe, (2) primary atomization air hose, (3) secondary-atomizing air hose, (4) mounting flange, (9) primary atomization wind locking, (10) secondary-atomizing wind locking, and wherein (b) is fuel oil inlet, (a
1) be primary atomization air intake, (a
2) be the secondary-atomizing air intake.Shower nozzle (12) is by (5) atomizer, (6) primary atomization air mouth, and (7) mixing chamber, (8) secondary-atomizing air mouth is formed.
High temperature vertical kiln is when using liquid fuel, and different with burning gases fuel, liquid fuel must atomize before burning, and be about to oil and make particulate group---mist of oil, gasification then, combustible contacts with the air mixing, burns at once when reaching burning-point.Will make thermal-flame simultaneously, fuel used will have sufficiently high caloric value, and fuel and combustion air will be preheating to certain temperature, and air coefficient can not be excessive, preferably is a bit larger tham 1.But because the burning of fuel oil is to carry out in the gap of material in the kiln thorax, the combustion space is very little, fuel oil and combustion air mixing condition extreme difference, so the air coefficient of fuel oil shaft furnace should some be good slightly greatly.Adopt oxygen-enriched combusting certainly to improve ignition temperature, but value is very high, should not adopt.
For liquid fuel combustion, the fuel oil atomization is crucial.Purpose is in order to increase the contact area of combustible and combustion air, if 1cm
3Oil when making diameter and being the mist of oil of 40 μ, its surface area just can increase by 250 times, such mist of oil mixes easily with air, can accelerated combustion, easy to burn out again.
For making fuel oil complete in the shaft furnace internal combustion, should not make the mist of oil particle diameter excessive, the mist of oil particle diameter is excessive in addition, be subjected to high temperature action in the kiln suddenly, asymmetric cracking will take place, generate in " soot ", be unfavorable for trying to achieve high temperature, also can cause the chimney black smoke of emerging, wasted fuel contaminated environment again, and this " soot " also can stop up the burner shower nozzle, cause the burner oil-break, burn out burner easily, destroyed the normal running of kiln.In addition, the length of flame, rigidity, the diffusing property in shop also are crucial to the burning of shaft furnace.
In view of above-mentioned basic demand, the design has adopted the high temperature vertical kiln oil burner that mixes structure in the secondary high-pressure air swirl atomizing as shown in Figure 1, be dimerous by body (11) and shower nozzle (12), the two screwed connection, the outside of the oil inlet pipe (1) in body (11) is provided with two-layer atomized air tube (2) and (3), fuel oil is subjected to respectively in exit and secondary exit from the impact of the high pressure air flow of primary atomization air hose (2) and secondary-atomizing air hose (3) and forms " primary atomization " and " secondary-atomizing ", thereby improved fogging degree.
Shower nozzle (12) as shown in Figure 2, (I) is the side view of burner shower nozzle, (II) is the structure chart of burner shower nozzle, (III) is the cutaway view of burner shower nozzle.(5) among (II) figure are atomizer, (6) primary atomization air nozzle, (7) mixing chamber, (8) secondary-atomizing air nozzle.
Atomizer (5) in the shower nozzle (12) is designed to horn-like, can guarantees that the atomizing medium air-flow that penetrates penetrates effectively on the stream thigh of oil; Primary atomization air nozzle (6) is designed to reducing shape, can makes the primary atomization air form the high speed swirling eddy, thereby obtained the effect of " primary atomization ".
Between primary atomization air mouth (6) and secondary-atomizing air mouth (8), be provided with mixing chamber (7), make fuel oil and air behind the primary atomization in mixing chamber (7), fully be mixed into emulsion, mixing chamber (7) also is designed to reducing shape near secondary-atomizing air mouth (8) one sides, can make mixed liquor become the liquid stream of rotation at a high speed on the one hand, in the time of on the one hand mixed liquor being sprayed in the secondary exit, expand, and make the oil film impact grinding, form " secondary-atomizing " suddenly.
The ejiction opening (secondary-atomizing air mouth (8)) of shower nozzle (12) is designed to ejection structure, so just can eliminates general burner nozzle memory oil, coking phenomenon, guaranteed flexibility and reliability of operation that burner is regulated.
The machining accuracy that this burner is had relatively high expectations is penetrated on the stream thigh of oil effectively for the atomizing medium air-flow that makes ejaculation, also requires the physical dimension at each position of shower nozzle, angle all must be very accurate, must guarantee each annular space of burner ejiction opening with one heart.Otherwise can have a strong impact on atomizing effect and other characteristic requirement.
As shown in Figure 3, wherein (5) are atomizer, (6) primary atomization air nozzle, (7) mixing chamber, (8) secondary-atomizing air nozzle, (b) fuel oil inlet, (a
1) the primary atomization air intake, (a
2) the secondary-atomizing air intake.
Oil inlet pipe (1) is communicated with primary atomization air mouth (6) by atomizer (5), communicate with mixing chamber (7) by primary atomization air mouth (6) again; Primary atomization air hose (2) is communicated with mixing chamber (7) by primary atomization air mouth (6); Secondary-atomizing air hose (3) is communicated with the external world by secondary-atomizing air mouth (8), and mixing chamber (7) also communicates with the external world.
The operation principle of high temperature vertical kiln oil burner is: fuel oil is entered by inlet (b), and a compressed air is from inlet (a
1) enter, when fuel oil sprayed from an exit (being atomizer (5)), the violent row that are subjected to the high pressure air flow of coming out from primary atomization air mouth (6) impacted, and form " primary atomization ".At this moment fuel oil and air form the milkiness mixed liquor in mixing chamber (7), and the fierce collision in mixing chamber (7) of this oil gas mixed liquor forms foam.This foam mixing liquid, because the high pressure effect sprays from nozzle (8), the broken oil film of expansive force drum of the rapid outburst of atomizing air when ejection because in the oil gas, be subjected to simultaneously the impact comminution second time again from the high speed swirling eddy of overcoat (being secondary-atomizing air hose (3)), promptly form " secondary-atomizing ", obtain superfine mist of oil.
Embodiment:
High temperature vertical kiln oil burner of the present invention is used for the 3.5m in magnesium ore deposit, Liaoning first
3On the hot test shaft furnace.
Be illustrated in figure 4 as burner of the present invention at 3.5m
3Work system figure on the hot test shaft furnace.(1) storage bin among the figure, (2) shaft furnace, (3) burner, (4) deduster, (5) electric vibrating feeder, (6) circular cone discharging machine, (7) cooling blower, (8) oil-measuring pump, (9) primary air compressor, (10) water circulating pump, (11) supply-water pump, (12) deduster, (13) induced-draft fan.
1. the technical performance of high temperature vertical kiln oil burner of the present invention is as shown in the table.
2. distant magnesium company Haicheng City magnesium ore deposit 3.5m
3The technical parameter of high temperature vertical kiln is as follows:
(1) (chemical composition is as showing: %) for raw material-magnesia light-burned binder ball
(2) fuel-cracked oil, 78 ℃ of oil temperature, proportion 0.84(25 ℃).
(oil viscosity under the different temperatures, the elementary analysis and the caloric value of oil are as shown in the table)
(3) thermal regulation of high temperature vertical kiln:
The furnace air factor alpha is 1.09, end air quantity 2601m
3 n/ h, end wind pressure 55.9kPa(5700mmH
2The O post), extracting hot blast rate out is 1613m
3 n/ h, atomizing is 387.3m with the compressed air total amount
3 n/ h, 259 ℃ of kiln top EGTs, calcining heat in the kiln " 1900 ℃,
(4) high temperature vertical kiln is opened 12 burners altogether, and each burner amount of fuel is 4.2～14.49kg/h, and cumulative fuel consumption is the 83.17kg/h(cracked oil).
Oil pressure and blast (kPa) as shown in the table before the burner:
(5) product of high temperature vertical kiln and output:
The performance of highly-purity magnesite product such as following table, %:
Output is 1147kg/h, and the usage factor of kiln is 7.865t/dm
3,
3. the contrast of high temperature vertical kiln oil burner of the present invention and Austrian RCE burner:
The practical technique performance comparison table of burner of the present invention and RCE burner:
| Project | Burner of the present invention | The RCE burner |
| Nozzle structure | Mix in the high pressure cyclone | Sleeve pipe |
| Atomizing air amount/combustion air amount % | 28.5～42 | 55～56 |
| The atomizing number of times | 2 | 1 |
| Average oil droplet degree, μ | 40 | - |
| The furnace air coefficient | 1.09～1.17 | 1.67 |
| Calcining heat, ℃ | >>1900 | >1900 |
The process conditions contrast table of burner of the present invention and RCE burner:
| Sequence number | Project | Burner of the present invention | The RCE burner |
| 1 | Ore | The superfine magnesite of the Liao Dynasty's magnesium | The superfine magnesite of the Liao Dynasty's magnesium |
| 2 | Light-burned stove | Reverberatory furnace | Suspension roaster |
| 3 | Light roasting temperature, ℃ | ～1000 | ～860 |
| 4 | Light burnt powder igloss, % | 3～5 | 0.61 |
| 5 | Fine grinding equipment | 4R overhang roll pulverizer | |
| 6 | Light burnt powder fineness 40 μ, % | 70－80 | 99.5 |
| 7 | Ball press | K?309 | ms-150 |
| 8 | The pelletizing size, mm | 40×23×24 | 30×20×14 |
| 9 | Magnesia bulk density g/cm 3 | >3.3 | ≈3.29 |
| 10 | Calcining heat, ℃ | >>1900 | >1900 |
Claims (10)
1, a kind of high temperature vertical kiln oil burner, it forms the two screwed connection by body [11] and shower nozzle [12]; It is characterized in that:
A) body [11] is made up of oil inlet pipe [1] and double-deck atomized air tube [2] and [3].
B) shower nozzle [12] is made up of atomizer [5], primary atomization air mouth [6], mixing chamber [7], secondary-atomizing air mouth [8].
2, burner according to claim 1 is characterized in that mixing chamber (7) is located between primary atomization air mouth (6) and the secondary-atomizing air mouth (8), and mixing chamber (7) is made reducing shape near secondary-atomizing air mouth (8) one sides.
3, burner according to claim 1 is characterized in that oil inlet pipe (1) is to communicate with primary atomization air mouth (6) by atomizer (5), communicates with mixing chamber (7) by primary atomization air mouth (6) again.
4, burner according to claim 1 is characterized in that primary atomization air hose (2) is to communicate with mixing chamber (7) by primary atomization air mouth (6).
5, burner according to claim 1 is characterized in that secondary-atomizing air hose (3) is to communicate with the external world by secondary-atomizing air mouth (8).
6, burner according to claim 1 and 2 is characterized in that mixing chamber (7) communicates with the external world.
7, according to claim 1 or 2 or 3 or 4 or 5 described burners, it is characterized in that oil inlet pipe (1), primary atomization air hose (2), secondary-atomizing air hose (3), atomizer (5), primary atomization air mouth (6), each annular space of mixing chamber (7) secondary-atomizing air mouth (8) must be with one heart.
8,, it is characterized in that making atomizer (5) horn-like according to claim 1 or 3 described burners.
9,, it is characterized in that primary atomization air mouth (6) is made reducing shape according to claim 1 or 4 described burners.
10, burner according to claim 1 or 5 is characterized in that secondary-atomizing air mouth (8) is designed to horn-like ejection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210470 CN87210470U (en) | 1987-08-22 | 1987-08-22 | High-temperature vertical kilm fuel-oil nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87210470 CN87210470U (en) | 1987-08-22 | 1987-08-22 | High-temperature vertical kilm fuel-oil nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87210470U true CN87210470U (en) | 1988-05-11 |
Family
ID=4825396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87210470 Expired - Lifetime CN87210470U (en) | 1987-08-22 | 1987-08-22 | High-temperature vertical kilm fuel-oil nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87210470U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466225A (en) * | 2010-11-02 | 2012-05-23 | 烟台龙源电力技术股份有限公司 | Secondary rotational mixing type air atomization oil gun |
| CN103822207A (en) * | 2012-11-16 | 2014-05-28 | 航天长征化学工程股份有限公司 | Variable pressure and variable working condition oil burner |
| CN105423295A (en) * | 2015-11-16 | 2016-03-23 | 刘操 | Energy-saving environment-friendly vaporizing fuel oil burner |
| CN106016338A (en) * | 2016-05-20 | 2016-10-12 | 昆明理工大学 | Secondary-atomizing oxy-fuel combustion method of burning oil of biomass |
-
1987
- 1987-08-22 CN CN 87210470 patent/CN87210470U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466225A (en) * | 2010-11-02 | 2012-05-23 | 烟台龙源电力技术股份有限公司 | Secondary rotational mixing type air atomization oil gun |
| CN102466225B (en) * | 2010-11-02 | 2014-06-04 | 烟台龙源电力技术股份有限公司 | Secondary rotational mixing type air atomization oil gun |
| CN103822207A (en) * | 2012-11-16 | 2014-05-28 | 航天长征化学工程股份有限公司 | Variable pressure and variable working condition oil burner |
| CN103822207B (en) * | 2012-11-16 | 2017-06-06 | 航天长征化学工程股份有限公司 | Variable pressure and variable working condition oil burner |
| CN105423295A (en) * | 2015-11-16 | 2016-03-23 | 刘操 | Energy-saving environment-friendly vaporizing fuel oil burner |
| CN106016338A (en) * | 2016-05-20 | 2016-10-12 | 昆明理工大学 | Secondary-atomizing oxy-fuel combustion method of burning oil of biomass |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |