CN208898757U - A kind of cyclone separating coal dust shunting spray gun and low NOx lime generation equipment - Google Patents
A kind of cyclone separating coal dust shunting spray gun and low NOx lime generation equipment Download PDFInfo
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- CN208898757U CN208898757U CN201821684610.8U CN201821684610U CN208898757U CN 208898757 U CN208898757 U CN 208898757U CN 201821684610 U CN201821684610 U CN 201821684610U CN 208898757 U CN208898757 U CN 208898757U
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- coal
- chute road
- spray gun
- coal dust
- cyclone separating
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Abstract
The utility model discloses a kind of cyclone separating coal dusts to shunt spray gun, including coal pipe and separation chamber；The coal pipe is connected to the separation chamber from side, and the bottom of the separation chamber is connected to expansion chamber, and the top of the separation chamber is connected to drainage tube；The pulverized coal injection mouth of the expansion chamber bottom forms or is connected with the first coal chute road, the drainage tube includes uplink section, turns to section and downlink section, the downlink section forms the second coal chute road, the defeated coal concentration on first coal chute road is greater than the defeated coal concentration on second coal chute road, and the coal dust spout on first coal chute road is higher than the coal dust spout on second coal chute road.The coal dust, which shunts spray gun, can effectively reduce the NOx discharge of the lime generation equipments such as limekiln, so that it be made to meet environmental requirements when producing lime.The invention also discloses a kind of low NOx lime generation equipments.
Description
Technical field
The utility model relates to the pulverized coal injections of the lime generation equipment of metallurgical and chemical industry, especially lime generation equipment
Rifle.The utility model further relates to the lime generation equipment equipped with the pulverized coal gun.
Background technique
In metallurgical and chemical industry, general so-called lime refers to quick lime (CaO) that quick lime is (main by lime stone
Ingredient CaCO3) in limekiln CO is released by 950 DEG C~1100 DEG C high-temperature calcinations2After generate.
Lime is the important auxiliary material in metallurgy industry, in iron-smelting raw material sintering, ironmaking reduction process, molten iron pretreatment
During process and external refining, lime plays the role of dephosphorization, desulfurization, the quality of quality is to steel as additive
The influence of energy is most important.
According to measurement, the NOx concentration of certain newly-built double-hearth lime kiln smoke outlet is average up to 130mg/m in recent years3, instantaneous dense
Degree is more than 160mg/m3Although current NOx emission concentration can satisfy the emission request of current national standard, with state
Family's environmental requirement is increasingly stringenter, and the tightening of limekiln NOx emission standard is by imperative (the industrial furnace NOx of newest publication
Discharge standard is reduced to 100mg/m3)。
Fig. 1, Fig. 2 are please referred to, Fig. 1 is a kind of structural schematic diagram of the pulverized coal gun of typical LIME DOUBLE thorax shaft kiln；Fig. 2 is figure
The schematic diagram that a longitudinal passages are connected with lateral duct shown in 1.
As shown, the full lime stone to be roasted of kiln body interior accumulation of LIME DOUBLE thorax shaft kiln, coal dust leads in production
It crosses coal dust general pipeline to enter in pulverized coal gun, finally be sprayed inside lime stone layer, high-temperature area is formed in ejiction opening, to lime
Stone carries out high-temperature roasting to form product.
Coal dust shunting not yet in effect in this pulverized coal gun, in production, coal dust are whole from spray gun penetrating lime building stones
Layer is internal to participate in burning production, local long term high temperature, oxygen-enriched combustion zone is easily formed in lime stone layer, thus at this
Region generates a large amount of thermal NO x, will cause NOx concentration in the flue gas of limekiln and remains high, to a whole set of lime kiln system
Qualification production is brought a negative impact.
Therefore, the NOx emission concentration for how further decreasing limekiln becomes this field technical problem urgently to be resolved.
Utility model content
The purpose of the utility model is to provide a kind of cyclone separating coal dusts to shunt spray gun.The spray gun can effectively reduce lime
The NOx discharge of the lime generation equipments such as kiln, so that it be made to meet environmental requirements when producing lime.
The another object of the utility model is to provide a kind of lime production equipped with the cyclone separating pulverized coal gun and sets
It is standby.
To achieve the above object, the utility model provides a kind of cyclone separating coal dust and shunts spray gun, including coal pipe and
Separation chamber；The coal pipe is connected to the separation chamber from side, and the bottom of the separation chamber is connected to expansion chamber, the separation chamber
Top be connected to drainage tube；The pulverized coal injection mouth of the expansion chamber bottom forms or is connected with the first coal chute road, the drainage tube
Including uplink section, section and downlink section are turned to, the downlink section forms the second coal chute road, and the defeated coal on first coal chute road is dense
Degree is greater than the defeated coal concentration on second coal chute road, and the coal dust spout on first coal chute road is higher than the described second defeated coal
The coal dust spout of pipeline.
Preferably, the length on second coal chute road is greater than first coal chute road.
Preferably, several baffles for being separated to coal dust are equipped in the separation chamber.
Preferably, the baffle uniform array is distributed in inside the separation chamber.
Preferably, the coal dust of the separation chamber sprays into direction perpendicular to the wind deflector of each baffle.
Preferably, the expansion chamber is in up big and down small funnel shaped.
Preferably, the coal dust spout of the expansion chamber bottom is deviated to second coal chute road side.
Preferably, first coal chute road parallel arrangement adjacent with the second coal chute road.
To realize above-mentioned another object, the utility model provides a kind of low NOx lime generation equipment, including being equipped with kiln thorax
Limekiln ontology, the kiln thorax have burning zone and are equipped with the burner to burning zone input fuel to be calcined, institute
Stating burner is that cyclone separating coal dust described in any of the above embodiments shunts spray gun.
Preferably, the limekiln ontology is equipped with the first temperature in the position for corresponding to first coal chute road coal dust spout
Detection device is spent, and is equipped with second temperature detection device in the position for corresponding to second coal chute road coal dust spout.
Pulverized coal gun provided by the utility model has diverter function, and it is heavy that the bottom and top of separation chamber are respectively communicated with
Room and drainage tube drop, and the bottom of expansion chamber is formed or the first coal chute road of connection, and the downlink section of drainage tube forms the second coal chute
Road, when carrying out actual production, the coal dust beam that spray comes from the direction coal powder injection general pipeline can be automatically separated into two strands not behind separation chamber
With a fluid stream, a fluid stream in the first coal chute road is rich coal a fluid stream, and a fluid stream in the second coal chute road is lean stream beam, wherein rich coal
The outlet of a fluid stream add compared with the outlet port of meager coal a fluid stream it is top, thus in limekiln formed two positions two bursts of concentration not
Blowing with coal dust beam is distributed, to realize bias combustion of the limekiln in production, and then is effectively inhibited in limekiln
The production quantity of NOx can effectively reduce the NOx discharge of the lime generation equipments such as limekiln, it is made to meet ring when producing lime
Guaranteed request.
Low NOx lime generation equipment provided by the utility model is equipped with above-mentioned cyclone separating coal dust and shunts spray gun, by
Spray gun is shunted in the cyclone separating coal dust to have above-mentioned technique effect, then is equipped with the cyclone separating coal dust and shunts spray gun
Low NOx lime generation equipment should also have corresponding technical effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the pulverized coal gun of typical LIME DOUBLE thorax shaft kiln；
Fig. 2 is the schematic diagram that a longitudinal passages shown in Fig. 1 are connected with lateral duct；
Fig. 3 is a kind of structural schematic diagram of cyclone separating coal dust shunting spray gun disclosed in the utility model embodiment；
Fig. 4 is the structural schematic diagram that another kind cyclone separating coal dust disclosed in the utility model embodiment shunts spray gun；
Fig. 5 is the structural schematic diagram that another cyclone separating coal dust disclosed in the utility model embodiment shunts spray gun.
In figure:
1. 2. coal powder injection general pipeline of limekiln body, 3. pulverized coal gun, 4. cyclone separating coal dust shunts 41. coal pipe of spray gun
42. separation chamber, 47. second coal chute road, 43. expansion chamber, 44. drainage tube, 45. baffle, 46. first coal chute road
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Herein, the terms such as " upper and lower, inside and outside " are positional relationships based on the figure and establishment, with reference to the accompanying drawings
Difference, corresponding positional relationship is also possible to change therewith, therefore, can not be understood as to the exhausted of protection scope
To restriction；Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relationship or
Sequentially.
Referring to FIG. 3, Fig. 3 is a kind of structure of cyclone separating coal dust shunting spray gun disclosed in the utility model embodiment
Schematic diagram.
As shown, in a specific embodiment, cyclone separating coal dust provided by the utility model shunts spray
Rifle 4 includes coal pipe 41, separation chamber 42, expansion chamber 43 and drainage tube 44, in actual installation, each lime generation equipment, and example
Such as double-hearth lime kiln, multiple groups cyclone separating coal dust can be uniformly arranged in the circumferential direction in inside and shunts spray gun 4.
Coal pipe 41 is connected to separation chamber 42 from side, and the bottom of separation chamber 42 is connected to expansion chamber 43, the top of separation chamber 42
Portion is connected to drainage tube 44；The coal dust nozzle position of 43 bottom of expansion chamber forms the first coal chute road 46, the first coal chute when work
The a fluid stream of 46 internal transmission of road is rich coal a fluid stream, and drainage tube 44 includes uplink section, turns to section and downlink section, generally in inverted " u "
The length of shape, uplink section is shorter, and the length of downlink section is larger, is downwardly extending the second coal chute road 47 always, when work
The a fluid stream of two coal chute roads, 47 internal transmission is meager coal a fluid stream, and the defeated coal concentration on the first coal chute road 46 is greater than the second coal chute road
47 defeated coal concentration, and the coal dust spout on the first coal chute road 46 is higher than the coal dust spout on the second coal chute road 47.
It is equipped with several baffles 45 in separation chamber 42, the coal dust a fluid stream for blocking and blowing from side high speed can be played, make its powder gas
Isolated effect, 45 uniform array of baffle are distributed in inside separation chamber 42, and the coal dust of separation chamber 42 sprays into direction perpendicular to each gear
The wind deflector of piece 45 arranges as shown in the figure for three rows three, amounts to nine baffles 45, its quantity as needed can also further increase
Or it reduces.
Expansion chamber 43 is in up big and down small funnel shaped, and the coal dust nozzle position of bottom is to 47 side of the second coal chute road
Offset, thus the first coal chute road 46 formed, the first coal chute road 46 is closely packed together with the second coal chute road 47, it is adjacent simultaneously
Arrangement is set, and from sectional view, the side of expansion chamber is inclined skew wall, and the side against the second coal chute road 47 is longitudinal
Straight wall.
First coal chute road 46 and the second coal chute road 47 are used to spray into coal dust to the inside of the kiln thorax in limekiln, to form combustion
Area is burnt, quick lime is calcined, region corresponding to the coal dust spout on the first coal chute road 46 forms main burning area, and second is defeated
Region corresponding to the coal dust spout of coal pipeline 47 forms the combustion zone again for being located at main burning area downstream.
When carrying out actual production, the coal dust beam that spray comes from 2 direction coal powder injection general pipeline enters separation chamber 42 by coal pipe 41,
Under the action of baffle 45, larger and heavier pulverized coal particle can be separated from coal dust a fluid stream, by gravity down into heavy
Room 43 is dropped, the higher rich coal dust a fluid stream of coal powder density is re-formed in expansion chamber 43, finally from the first of 43 bottom of expansion chamber
Coal chute road 46 sprays.At the same time, the smaller and lighter pulverized coal particle in separation chamber 42 will continue to raw coal powder a fluid stream
It moves ahead, enters in drainage tube 44 at the top of separation chamber 42, the lower meager coal powder a fluid stream of coal powder density is formed, finally from drainage tube 44
The second coal chute road 47 that downlink section is formed sprays.Raw coal powder a fluid stream is effectively thus divided into rich stream beam and lean stream beam two
Stock forms the blowing distribution of two strands of concentration difference coal dust beams in limekiln, so that it is dense in production to realize limekiln
Light burning, and then effectively inhibit the production quantity of NOx in limekiln.
Above-described embodiment is only the preferred embodiment of the utility model, is specifically not limited thereto, on this basis can basis
Actual needs is made having and targetedly be adjusted, to obtain different embodiments.For example, inside separation chamber 42, it is adjacent
Two column baffles 45 can be misplaced up and down (see Fig. 4), and from left to right, the baffle 45 of secondary series just corresponds between first row baffle 45
Gap, and so on；Alternatively, the further connecting pipe in the bottom of expansion chamber 43 is to form the first coal chute road 46 become apparent
(see Fig. 5), etc..Since mode in the cards is more, just no longer illustrate one by one here.
In addition to above-mentioned coal dust shunts spray gun, the utility model also provides a kind of low NOx lime generation equipment, specially double thoraxes
Limekiln, the limekiln body including being equipped with kiln thorax, kiln thorax have burning zone and are equipped with to burning zone input fuel to carry out
The burner of calcining, burner are cyclone separating coal dust shunting spray gun above, and refer to the prior art for remaining structure.
Further, limekiln body is equipped with upper coal powder injection position temperature in the position for corresponding to the first coal chute road coal dust spout
Detection device, and lower coal powder injection position temperature-detecting device, such as S type are equipped in the position for corresponding to the second coal chute road coal dust spout
Thermocouple etc. with its effect of the upper and lower temperature of coal powder injection position inside kiln thorax described in real-time monitoring is sprayed above and below in real-time monitoring kiln
The temperature of coal position provides data for the self adaptive control in production and supports.
Spray gun is shunted to coal dust provided by the utility model above and low NOx lime generation equipment has carried out detailed Jie
It continues.Specific case used herein is expounded the principles of the present invention and embodiment, and above embodiments are said
The bright core concept for being merely used to help understand the utility model.It should be pointed out that for those skilled in the art
For, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, these
Improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (10)
1. a kind of cyclone separating coal dust shunts spray gun, which is characterized in that including coal pipe and separation chamber；The coal pipe is from side
Face is connected to the separation chamber, and the bottom of the separation chamber is connected to expansion chamber, and the top of the separation chamber is connected to drainage tube；It is described
The pulverized coal injection mouth of expansion chamber bottom forms or is connected with the first coal chute road, the drainage tube include uplink section, turn to section and under
Row section, the downlink section form the second coal chute road, and the defeated coal concentration on first coal chute road is greater than second coal chute
The defeated coal concentration on road, and the coal dust spout on first coal chute road is higher than the coal dust spout on second coal chute road.
2. cyclone separating coal dust according to claim 1 shunts spray gun, which is characterized in that second coal chute road
Length is greater than first coal chute road.
3. cyclone separating coal dust according to claim 1 shunts spray gun, which is characterized in that if being equipped in the separation chamber
Do the baffle for being separated to coal dust.
4. cyclone separating coal dust according to claim 3 shunts spray gun, which is characterized in that the baffle uniform array point
Cloth is inside the separation chamber.
5. cyclone separating coal dust according to claim 4 shunts spray gun, which is characterized in that the pulverized coal injection of the separation chamber
Enter direction perpendicular to the wind deflector of each baffle.
6. cyclone separating coal dust according to claim 1 shunts spray gun, which is characterized in that under the expansion chamber is presented greatly
Small funnel shaped.
7. cyclone separating coal dust according to claim 6 shunts spray gun, which is characterized in that the coal of the expansion chamber bottom
Powder spout is deviated to second coal chute road side.
8. cyclone separating coal dust according to claim 7 shunts spray gun, which is characterized in that first coal chute road with
The adjacent parallel arrangement in second coal chute road.
9. a kind of low NOx lime generation equipment, the limekiln ontology including being equipped with kiln thorax, the kiln thorax have burning zone and are equipped with
To burner of the burning zone input fuel to be calcined, which is characterized in that the burner be the claims 1 to
8 described in any item cyclone separating coal dusts shunt spray gun.
10. low NOx lime generation equipment according to claim 9, which is characterized in that the limekiln ontology is corresponding to
The position of first coal chute road coal dust spout is equipped with the first temperature-detecting device, and is corresponding to second coal chute road
The position of coal dust spout is equipped with second temperature detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821684610.8U CN208898757U (en) | 2018-10-17 | 2018-10-17 | A kind of cyclone separating coal dust shunting spray gun and low NOx lime generation equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821684610.8U CN208898757U (en) | 2018-10-17 | 2018-10-17 | A kind of cyclone separating coal dust shunting spray gun and low NOx lime generation equipment |
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| Publication Number | Publication Date |
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| CN208898757U true CN208898757U (en) | 2019-05-24 |
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| CN201821684610.8U Active CN208898757U (en) | 2018-10-17 | 2018-10-17 | A kind of cyclone separating coal dust shunting spray gun and low NOx lime generation equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590194A (en) * | 2019-10-08 | 2019-12-20 | 江苏北山建材有限公司 | Lime production system |
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2018
- 2018-10-17 CN CN201821684610.8U patent/CN208898757U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590194A (en) * | 2019-10-08 | 2019-12-20 | 江苏北山建材有限公司 | Lime production system |
| CN110590194B (en) * | 2019-10-08 | 2021-10-08 | 江苏北山建材有限公司 | Lime production system |
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