CN207035105U - A kind of fine coal all-oxygen combustion device on smelting kiln - Google Patents
A kind of fine coal all-oxygen combustion device on smelting kiln Download PDFInfo
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- CN207035105U CN207035105U CN201721003417.9U CN201721003417U CN207035105U CN 207035105 U CN207035105 U CN 207035105U CN 201721003417 U CN201721003417 U CN 201721003417U CN 207035105 U CN207035105 U CN 207035105U
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- oxygen
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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
Abstract
The utility model discloses a kind of fine coal all-oxygen combustion device smelted on kiln, including burner, burner is arranged on kiln, and burner side is fixed in burner fixed plate, combustor external is provided with burner protection tile, coal dust channel and oxygen channel are provided with burner, pulverized coal injection mouth is installed in coal dust channel, oxygen jet head is installed in oxygen channel, the utility model structural principle is simple, automaticity is high, a kind of coal dust pure oxygen combustion technology is provided, improving Combustion Efficiency of Coal Powder, while reducing burning pollutant discharge, combustion flame stabilization and even dispersion, produced in kiln without high temperature hotspot, uniformity of temperature profile.
Description
Technical field
It the utility model is related to and smelt kiln technical field, specially a kind of fine coal all-oxygen combustion dress smelted on kiln
Put.
Background technology
Main energy sources of the coal as China at present, account for more than 70% always in a productive consumption, and it is foreseeable not
Come, status of the coal in China's energy resource structure will be stable and firm.Coal in production application exist largely make
With the problems such as efficiency is low, pollutant emission is high, produced in metallurgical industry, fire coal is safe, high as one of important energy source consumption
Effect, clean utilization are particularly important.
Pulverized coal combustion passes through years development, and certain journey is obtained in terms of improving efficiency of combustion and reducing pollutant emission
The development of degree, but in application of the pulverized coal combustion conventional at present on metallurgical furnace, Combustion Efficiency of Coal Powder is low, unstable combustion
Fixed, burning pollutant discharges the problems such as high, greatly influences and restricts metallurgical production efficiency and cost.
Oxygen-enriched combustion technology injects as a kind of means of current relatively advanced raising efficiency of combustion in combustion air
A certain amount of pure oxygen reaches the effect (between usual oxygen-rich concentration 22.5% ~ 50%) of oxygen-enriched combustion-supporting wind, in the feelings that thermic load is constant
Under condition, combustion product gases amount will be reduced substantially, but in oxygen-enriched atmosphere coal dust burning velocity than fast several times in atmosphere so that combustion
The small and dense reality of the flame that makes a fire, for flame temperature more than 2000 DEG C, so high temperature has a strong impact on the life-span of kiln, and because of Combustion Energy
Amount is local to be discharged, and temperature distribution gradients are big in kiln, is unfavorable for optimizing production efficiency.
Utility model content
The purpose of this utility model is to provide a kind of fine coal all-oxygen combustion device smelted on kiln, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the utility model provides following technical scheme：A kind of fine coal total oxygen combustion on smelting kiln
Device, including burner are burnt, the burner is arranged on kiln, and the burner side is fixed on burner fixed plate
On, the combustor external is provided with burner protection tile, and coal dust channel and oxygen channel, the coal dust are provided with the burner
Pulverized coal injection mouth is installed in passage, oxygen jet head is installed in the oxygen channel.
Preferably, the pulverized coal injection mouth front end is provided with burning oxygen entrance and coal powder entrance, the coal nozzle cephalic par
Ignitor is installed, the auxiliary oxygen entrance of burning torch, burning torch combustion gas are sequentially installed between the ignitor and coal powder entrance
Entrance and the main oxygen entrance of burning torch.
Preferably, the oxygen jet cephalic par is provided with burning torch nozzle, and the burning torch nozzle is provided with volume oxygen uptake
Entrance.
Compared with prior art, the beneficial effects of the utility model are：The utility model structural principle is simple, automates journey
Degree is high, there is provided a kind of coal dust pure oxygen combustion technology, while improving Combustion Efficiency of Coal Powder, reducing burning pollutant discharge, and combustion
Flame stabilization and even dispersion are burnt, is produced in kiln without high temperature hotspot, uniformity of temperature profile；Compared with prior art, its is notable
Advantage is, due to instead of air as combustion adjuvant using oxygen, reduces the thermal loss that nitrogen is taken away, improves thermal effect
Rate, fuel consumption is significantly saved, fuel consumption 40-50% can be reduced；Simultaneously because employ the oxygen and Fuel lance of uniqueness
Design and the optimization to spray gun installation site and angle, improve chute firing rate and being heated evenly property, reduce because
Idle cost caused by clearing up melt bonding and residual, reduces labor strength, improves product quality and production efficiency；
And due to exhaust gas volumn be greatly reduced with controllable NOx emission, substantially improve execute-in-place environment.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is side view of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-2 is referred to, the utility model provides a kind of technical scheme：A kind of fine coal all-oxygen combustion dress on smelting kiln
Put, including burner, the burner is arranged on kiln, and the burner side is fixed in burner fixed plate 11,
The combustor external is provided with burner protection tile 10, and coal dust channel and oxygen channel, the coal dust are provided with the burner
Pulverized coal injection mouth 8 is installed in passage, oxygen jet first 9 is installed in the oxygen channel.
In the utility model, the front end of pulverized coal injection mouth 8 is provided with burning oxygen entrance 2 and coal powder entrance 1, the pulverized coal injection mouth
8 ends are provided with ignitor 7, and the auxiliary oxygen entrance 6 of burning torch, point are sequentially installed between the ignitor 7 and coal powder entrance 1
Firelock fuel gas inlet 4 and the main oxygen entrance 5 of burning torch；First 9 end of oxygen jet is provided with burning torch nozzle 12, the burning torch spray
Mouth 12 is provided with volume oxygen uptake entrance 3.
Operation principle：Coal dust and two-way oxygen are delivered into the burner on kiln respectively to spray into stove, two
After person's partial pre-mix, with inner flue gas of the stove is secondary mix while, burnt.One pure oxygen is installed at pulverized coal injection mouth center
Combustion-supporting natural gas superhigh temperature burner, when starting the high temperature burner, can quick igniting coal dust, to obtain stable flame structure.
Coal dust is exported by the solid material conveyer of a variable output quantity, after conveyer is left, by pressure all the way and stream
The adjustable clean compressed air of amount, according to the difference of coal dust output quantity, adjusts carrier gas flux and pressure as injection carrier gas
Power, it is ensured that before coal dust enters burner, be evenly distributed and flow speed stability in carrier gas Midst density.
For pure oxygen as combustion adjuvant, concentration is 80% ~ 99%, and valve group is adjusted by oxygen flux control, through gas filtration, voltage stabilizing,
After pressure and temp detection, pass through two-way flow control tube line：Wherein oxygen enters pulverized coal injection mouth as burning oxygen all the way, another
Road oxygen enters oxygen jet head as volume oxygen uptake.The characteristics of natural gas superhigh temperature burner of pure oxygen combustion-supporting is that flame is concentrated, is thin
Long and temperature is up to more than 2000 DEG C, and body is from coal dust burner centrally through when burner starts, coal dust being made quickly to be ignited.
Regular air or oxygenized air combustion supporting are replaced using pure oxygen, the invalid gas of 30%-70% in combustion air is eliminated, is reducing
While amount of flue gas emission, avoid a large amount of flue gases and take away fired coal combustion heat of reaction,
Fuel and oxygen in the present invention can be sprayed into respectively by one or more two concentric metal sleeve spray guns
Chute carries out mixed combustion, can also spray into chute progress by having individually Fuel lance and oxygen lance at regular intervals
The combination of mixed combustion, or both.There is the lance head of threaded connection spray gun front end, for controlling speed and the direction of air-flow.
The quantity of spray gun depends on the length of heating chute.Fuel and oxygen lance are typically placed in chute cover plate center, and and slip
Into certain angle of inclination, the selection at angle of inclination is by the size according to chute, the melt depth flowed through, and slips in slot length direction
The height of tank cover plate optimizes regulation.Due to proposing higher requirement to processing safety as combustion adjuvant using oxygen,
In order to ensure the safety of mixed combustion, automatic ignition and flame detector system are configured with, and has independent valve group and PLC automatic
Control system carries out flow, the pressure of oxygen and fuel, and safety interlocking control.
The utility model structural principle is simple, and automaticity is high, there is provided a kind of coal dust pure oxygen combustion technology, is improving coal
While powder efficiency of combustion, reduction burning pollutant discharge, combustion flame is stable and even dispersion, kiln are interior without high temperature hotspot production
It is raw, uniformity of temperature profile；Compared with prior art, its remarkable advantage is, due to instead of air as combustion-supporting using oxygen
Agent, reduce the thermal loss that nitrogen is taken away, improve the thermal efficiency, significantly save fuel consumption, fuel consumption 40- can be reduced
50%；Simultaneously because employing oxygen and Fuel lance design and the optimization to spray gun installation site and angle of uniqueness, improve
The firing rate and being heated evenly property of chute, reduce the idle cost caused by cleaning melt bonding and residual, reduce
Labor strength, improve product quality and production efficiency；And due to being greatly reduced and controllable NOx rows for exhaust gas volumn
Put, substantially improve execute-in-place environment.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of fine coal all-oxygen combustion device smelted on kiln, including burner, it is characterised in that：The burner installation
On kiln, and the burner side is fixed on burner fixed plate（11）On, the combustor external is protected provided with burner
Protect brick（10）, the burner is interior to be provided with coal dust channel and oxygen channel, and pulverized coal injection mouth is provided with the coal dust channel
（8）, oxygen jet head is installed in the oxygen channel（9）.
A kind of 2. fine coal all-oxygen combustion device smelted on kiln according to claim 1, it is characterised in that：The coal dust
Nozzle head（8）Front end is provided with burning oxygen entrance（2）And coal powder entrance（1）, the pulverized coal injection mouth（8）End is provided with ignition power
Pole（7）, the ignitor（7）With coal powder entrance（1）Between be sequentially installed with the auxiliary oxygen entrance of burning torch（6）, burning torch combustion gas
Entrance（4）With the main oxygen entrance of burning torch（5）.
A kind of 3. fine coal all-oxygen combustion device smelted on kiln according to claim 1, it is characterised in that：The oxygen
Nozzle head（9）End is provided with burning torch nozzle（12）, the burning torch nozzle（12）It is provided with volume oxygen uptake entrance（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721003417.9U CN207035105U (en) | 2017-08-11 | 2017-08-11 | A kind of fine coal all-oxygen combustion device on smelting kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721003417.9U CN207035105U (en) | 2017-08-11 | 2017-08-11 | A kind of fine coal all-oxygen combustion device on smelting kiln |
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| Publication Number | Publication Date |
|---|---|
| CN207035105U true CN207035105U (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721003417.9U Active CN207035105U (en) | 2017-08-11 | 2017-08-11 | A kind of fine coal all-oxygen combustion device on smelting kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300170A (en) * | 2017-08-11 | 2017-10-27 | 云汇环保科技南通有限公司 | A kind of fine coal all-oxygen combustion device on smelting kiln |
-
2017
- 2017-08-11 CN CN201721003417.9U patent/CN207035105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107300170A (en) * | 2017-08-11 | 2017-10-27 | 云汇环保科技南通有限公司 | A kind of fine coal all-oxygen combustion device on smelting kiln |
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