CN106287785A - A kind of process used solid fuel on sleeve kiln - Google Patents
A kind of process used solid fuel on sleeve kiln Download PDFInfo
- Publication number
- CN106287785A CN106287785A CN201610793586.0A CN201610793586A CN106287785A CN 106287785 A CN106287785 A CN 106287785A CN 201610793586 A CN201610793586 A CN 201610793586A CN 106287785 A CN106287785 A CN 106287785A
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- CN
- China
- Prior art keywords
- solid fuel
- kiln
- sleeve kiln
- burner
- fuel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0003—Heating elements or systems with particulate fuel, e.g. aspects relating to the feeding
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a kind of process used solid fuel on sleeve kiln, the method is: will put in kiln from sleeve kiln top containing the mixed material of solid fuel with raw material by feeding system, mixed material is along with the discharging of kiln bottom moves down in kiln and is gradually heated by thermal current in kiln, after the solid fuel in mixed material reaches burning-point, the oxygen in thermal current is utilized to burn, by burner on solid fuel mating sleeve kiln and the use of lower burner, calcining raw materials.The present invention can solve the problem that when sleeve kiln produces, gas supply is not enough, gas cost is high, solid fuel low cost, and proportioner is simple, and former sleeve kiln transformation amount is few, is that a kind of of sleeve kiln user well selects, has higher economic benefit.
Description
Technical field
The present invention relates to fuel combustion in a kind of annular lime kiln and use technique, use on sleeve kiln particularly to one
The process of solid fuel.
Background technology
Sleeve kiln is as the kiln type of a kind of advanced technology, good product quality, and energy consumption is low, is negative pressure, without powder during production in kiln
Arranging outside dirt, the feature of environmental protection is good.The most domestic have hundreds of sleeve kilns running, and the overwhelming majority is with coal gas as fuel.In iron and steel enterprise
Or coal chemical industry enterprises, it is possible to use the tail gas of industrial furnace, as coke-stove gas, coal gas of converter, mixed gas, tail of semi coke etc. are made
For the fuel of sleeve kiln, the most minimal amount of sleeve kiln is with coal dust as fuel.
Before several years, various industrial gas utilize less, and a large amount of coal gas directly burn as industrial waste gas and diffuse.In recent years,
The upgrading tapped the potential and upgrade technologically production technology along with each enterprise, the application of coal gas is more and more extensive, industrial waste gas become a kind of
High-quality, resource in short supply, many enterprises face the situation that gas supply is not enough, gas cost is high, and fuel problem has become sleeve
The obstacle that kiln normally produces, time often result in the sleeve kiln underproduction and even stop production, affect the properly functioning of enterprise.It addition, for plan
The enterprise of new upper limekiln project, owing to not having extra gas supply, fuel problem also contributes to business decision, becomes obstruction
The factor of sleeve kiln Popularization And Development.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of process used solid fuel on sleeve kiln, solves
The problem that sleeve kiln gas supply is not enough, gas cost is high.
To achieve these goals, present invention employs following technical scheme: a kind of use solid combustion on sleeve kiln
The process of material, will put in kiln from sleeve kiln top containing the mixed material of solid fuel with raw material by feeding system,
Mixed material is along with the discharging of kiln bottom moves down in kiln and is gradually heated by thermal current in kiln, when the solid in mixed material
After fuel reaches burning-point, the oxygen in thermal current is utilized to burn, by burner on solid fuel mating sleeve kiln and lower burning
The use of mouth, calcining raw materials.
Further, described feeding system includes scale hooper, oscillating feeder, feeding cart, track, belt feeder of weighing,
Solid fuel sends into scale hooper by belt feeder of weighing, and raw material sends into scale hooper, the mixing in scale hooper by oscillating feeder
Material by feeding cart along lifting track to sleeve kiln top after input sleeve kiln in.
Further, on described solid fuel mating sleeve kiln, the use of burner and lower burner includes following three kinds of situations:
1) not using burner and lower burner, only use solid fuel production；
2) do not use burner, use lower burner and solid fuel to produce；
3) use upper burner, lower burner and and solid fuel production simultaneously；
Further, lump coal or the coke that described solid fuel uses fuel granularity to be 5～80mm；Described raw material is Calx
Stone, dolomite or magnesite；The fuel that described upper burner and lower burner use is coal gas, natural gas or coal dust.
Further, described solid fuel unit interval usage amount is according to sleeve kiln yield, sleeve kiln heat consumption, solid combustion
Heat accounts for fuel total amount of heat ratio to material, solid fuel calorific value determines, solid fuel unit interval usage amount computing formula is:
M=125*D*w*k/ (3*h), in formula, m is solid fuel unit interval usage amount, unit K g/h；D is sleeve kiln
Yield, unit t/d；W is sleeve kiln heat consumption, and unit is Kcal/Kg；K is that solid fuel heat accounts for fuel total amount of heat ratio；H is
Solid fuel calorific value, unit is Kcal/Kg.
Beneficial effect: the present invention can solve the problem that when sleeve kiln produces, gas supply is not enough, gas cost is high, solid fires
Material low cost, proportioner is simple, and former sleeve kiln transformation amount is few, is that a kind of of sleeve kiln user well selects, has higher
Economic benefit.
Accompanying drawing explanation
Fig. 1 is the structural representation of feeding system of the present invention；
Fig. 2 is the A direction view in Fig. 1；
In figure: 1-scale hooper, 2-oscillating feeder, 3-weigh belt feeder, 4-feeding cart, 5-track, 6-mixed material.
Detailed description of the invention:
Below in conjunction with the accompanying drawings the present invention is done and further explain.
A kind of process used solid fuel on sleeve kiln of the present invention, will be fired containing solid by feeding system
Material puts in kiln from sleeve kiln top with the mixed material of raw material, and mixed material moves down also in kiln along with the discharging of kiln bottom
Gradually heated by thermal current in kiln, after the solid fuel in mixed material reaches burning-point, utilize the oxygen in thermal current to carry out
Burning, by burner on solid fuel mating sleeve kiln and the use of lower burner, calcining raw materials.
As illustrated in fig. 1 and 2, described feeding system includes scale hooper 1, oscillating feeder 2, feeding cart 4, track 5, weighs
Belt feeder 3.Wherein scale hooper 1, oscillating feeder 2, feeding cart 4, track 5 belong to the original proportioner of sleeve kiln, skin of weighing
The solid fuel proportioner of increase is belonged to machine 3.Solid fuel sends into scale hooper 1 by belt feeder 3 of weighing, and raw material is by shaking
Scale hooper 1 sent into by dynamic batcher 2, and the mixed material 6 in scale hooper 1 rises to sleeve kiln top by feeding cart 4 along track 5
In rear input sleeve kiln.
Belt feeder 3 of weighing is chain by automated procedures with oscillating feeder 2, automatically same when scale hooper 1 needs feed
Shi Yunhang realizes feed, scale hooper 1 reach setting weight need stop feed time, the most out of service.Weigh belt
On machine 3, doses is accurately reached when it is out of service, each with oscillating feeder 2 by combining the weight of scale hooper 1 setting
Time needed for feeding adjusts the parameter of belt feeder 3 of weighing, it is achieved above-mentioned purpose.
On solid fuel mating sleeve kiln, the use of burner and lower burner includes following Three models:
1) not using burner and lower burner, only use solid fuel production；
2) do not use burner, use lower burner and solid fuel to produce；
3) use upper burner, lower burner and and solid fuel production simultaneously；
Lump coal or the coke that described solid fuel uses fuel granularity to be 5～80mm；Described raw material is limestone, dolomite
Or magnesite；The fuel that described upper burner and lower burner use is coal gas, natural gas or coal dust.
Described solid fuel unit interval usage amount is to account for according to sleeve kiln yield, sleeve kiln heat consumption, solid fuel heat
Fuel total amount of heat ratio, solid fuel calorific value determine, solid fuel unit interval usage amount computing formula is:
M=125*D*w*k/ (3*h), in formula, m is solid fuel unit interval usage amount, unit K g/h；D is sleeve kiln
Yield, unit t/d；W is sleeve kiln heat consumption, and unit is Kcal/Kg；K is that solid fuel heat accounts for fuel total amount of heat ratio；H is
Solid fuel calorific value, unit is Kcal/Kg.
The teachings of k can be 0～1, but during actual production burner firing rate too low can not normal combustion, and solid
Fuel quantity is too low will lose operational meaning, so recommending k value to arrange scope is 0.15～0.7；
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (5)
1. the process used solid fuel on sleeve kiln, it is characterised in that: will be containing solid by feeding system
Fuel puts in kiln from sleeve kiln top with the mixed material of raw material, and mixed material moves down in kiln along with the discharging of kiln bottom
And gradually heated by thermal current in kiln, after the solid fuel in mixed material reaches burning-point, utilize the oxygen in thermal current to enter
Row burning, by burner on solid fuel mating sleeve kiln and the use of lower burner, calcining raw materials.
A kind of process used solid fuel on sleeve kiln the most according to claim 1, it is characterised in that: described
Feeding system includes scale hooper (1), oscillating feeder (2), feeding cart (4), track (5), belt feeder of weighing (3), and solid fires
Expecting to send into scale hooper (1) by belt feeder of weighing (3), raw material sends into scale hooper (1), scale hooper (1) by oscillating feeder (2)
In mixed material (6) rise to sleeve kiln top by feeding cart (4) along track (5) after put in sleeve kiln.
A kind of process used solid fuel on sleeve kiln the most according to claim 1 and 2, it is characterised in that:
On described solid fuel mating sleeve kiln, the use of burner and lower burner includes following Three models:
1) not using burner and lower burner, only use solid fuel production；
2) do not use burner, use lower burner and solid fuel to produce；
3) use upper burner, lower burner and and solid fuel production simultaneously.
A kind of process used solid fuel on sleeve kiln the most according to claim 3, it is characterised in that: described
Lump coal or the coke that solid fuel uses fuel granularity to be 5～80mm；Described raw material is limestone, dolomite or magnesite；Institute
The fuel stating burner and the use of lower burner is coal gas, natural gas or coal dust.
A kind of process used solid fuel on sleeve kiln the most according to claim 4, it is characterised in that: described
Solid fuel unit interval usage amount is to account for fuel total amount of heat ratio according to sleeve kiln yield, sleeve kiln heat consumption, solid fuel heat
Example, solid fuel calorific value determine, solid fuel unit interval usage amount computing formula is:
M=125*D*w*k/ (3*h), in formula, m is solid fuel unit interval usage amount, unit K g/h；D is sleeve kiln yield,
Unit t/d；W is sleeve kiln heat consumption, and unit is Kcal/Kg；K is that solid fuel heat accounts for fuel total amount of heat ratio；H is solid combustion
Material calorific value, unit is Kcal/Kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610793586.0A CN106287785A (en) | 2016-08-30 | 2016-08-30 | A kind of process used solid fuel on sleeve kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610793586.0A CN106287785A (en) | 2016-08-30 | 2016-08-30 | A kind of process used solid fuel on sleeve kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106287785A true CN106287785A (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610793586.0A Pending CN106287785A (en) | 2016-08-30 | 2016-08-30 | A kind of process used solid fuel on sleeve kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513451A (en) * | 2017-07-10 | 2017-12-26 | 管理 | A kind of stalk coal stone talc particles formula of magnesium catalytic combustion-supporting comprehensive energy boiler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008053136A1 (en) * | 2008-10-24 | 2010-05-20 | Maerz Ofenbau Ag | Annular shaft kiln |
| CN102303956A (en) * | 2011-07-22 | 2012-01-04 | 石家庄市新华工业炉有限公司 | Sleeve-type lime kiln |
| CN203284334U (en) * | 2013-03-07 | 2013-11-13 | 上海宝冶建设工业炉工程技术有限公司 | Energy-saving twin-tube vertical lime kiln |
| CN105776904A (en) * | 2016-03-08 | 2016-07-20 | 江苏中圣园科技股份有限公司 | Combustion method of fuel in shaft kiln |
-
2016
- 2016-08-30 CN CN201610793586.0A patent/CN106287785A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008053136A1 (en) * | 2008-10-24 | 2010-05-20 | Maerz Ofenbau Ag | Annular shaft kiln |
| CN102303956A (en) * | 2011-07-22 | 2012-01-04 | 石家庄市新华工业炉有限公司 | Sleeve-type lime kiln |
| CN203284334U (en) * | 2013-03-07 | 2013-11-13 | 上海宝冶建设工业炉工程技术有限公司 | Energy-saving twin-tube vertical lime kiln |
| CN105776904A (en) * | 2016-03-08 | 2016-07-20 | 江苏中圣园科技股份有限公司 | Combustion method of fuel in shaft kiln |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513451A (en) * | 2017-07-10 | 2017-12-26 | 管理 | A kind of stalk coal stone talc particles formula of magnesium catalytic combustion-supporting comprehensive energy boiler |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |
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| RJ01 | Rejection of invention patent application after publication |