CN106277856B - Coal-fired lime sleeve kiln combusting room device and its Slagoff method - Google Patents
Coal-fired lime sleeve kiln combusting room device and its Slagoff method Download PDFInfo
- Publication number
- CN106277856B CN106277856B CN201610686905.8A CN201610686905A CN106277856B CN 106277856 B CN106277856 B CN 106277856B CN 201610686905 A CN201610686905 A CN 201610686905A CN 106277856 B CN106277856 B CN 106277856B
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- China
- Prior art keywords
- flue
- ash
- combustion chamber
- coal
- dust retainer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/108—Treatment or selection of the fuel therefor
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The invention discloses a kind of coal-fired lime sleeve kiln combusting room device and its Slagoff methods, the combusting room device includes the cannular combustion chamber being obliquely installed, chamber temperature detector is equipped at the top of cannular combustion chamber, cannular combustion chamber bottom is equipped with diversion trench, diversion trench lower end is equipped with ash discharging hole, collection apparatus for ash is equipped with below ash discharging hole, collecting apparatus for ash includes flue-dust retainer, flue-dust retainer side wall is equipped with cool air hose, flue-dust retainer temperature monitor is equipped with inside flue-dust retainer, flue-dust retainer lower end is equipped with ash gate, and ash gate connects revolving plow reclaimer.The combusting room device Slagoff method: during coal dust is burnt, ash content in coal dust is fired into molten slag and falls into diversion trench, then it is fallen into flue-dust retainer through ash discharging hole, cold front heavy rain is passed through as solid, powdery and scoriform object by cool air hose in flue-dust retainer, is then discharged by flue-dust retainer lower end revolving plow reclaimer.The problem of clearing up is difficult to after slagging and slagging in combustion chamber when the present invention solves sleeve kiln fire coal.
Description
Technical field
The present invention relates to lime sleeve kiln coal combustion technology field, especially a kind of coal-fired lime with slag tap function
Sleeve kiln combusting room device and its Slagoff method.
Background technique
For annular lime kiln because occupied area is small, finished product activity of lime is high, and the porosity is high, the raw low advantage of burning rate and it is wide
The general lime production enterprise for being applied to metallurgy, chemical industry and building materials field.The traditional fuel of annular lime kiln is coal gas, such as coke-oven coal
Gas, coal gas of converter or blast furnace coke oven mixed gas etc..In recent years, with the latent and energy saving and cost lowering requirement of deep-cutting of industry, and permitted
Multiple enterprises are used for lime production without enough coal gas because of the limitation of area surroundings.Therefore, lime production producer is for annular
Sleeve kiln is persistently increased using coal dust as the attention rate of fuel, and the country has also gradually started to annular lime kiln coal combustion technology
Theoretical Proof and practical exploration.
Annular lime kiln fire coal is main problem is encountered that slagging in combustion chamber in production.Coal dust is sprayed into through burner to burn
Burning, the high temperature for generation of burning are softened or melted the ash content in coal dust rapidly after indoor, and a part of ash content is attached to burning
Cooling and solidifying forms slagging on the resistance to material in room, builds up from level to level in this way, indoor slagging amount of burning is more and more.
It needs to stop burner combustion by manually or mechanically mode scarfing cinder, waits burning room temperature to reduce, the knot of softening
After slag becomes fragile, it can clear up.This manner of cleaning up influences the continuous production operation in limekiln, and to the resistance to material service life of combustion chamber
There is adverse effect.And if not clearing up combustion chamber for a long time, on the one hand, combustion chamber ventilation resistance increases, flow field is destroyed, and influences lime
The calcine technology of sleeve kiln；On the other hand, flame flows into kiln after melting part coal ash burning, and slag is easy to be formed on resistance to material and hang
Wall and lime stone is caused to agglomerate, influence lime quality, once causing viscous kiln, will also have to stop kiln processing agglomeration.
Summary of the invention
Goal of the invention: it is difficult to after slagging and slagging in combustion chamber when the invention aims to solve sleeve kiln fire coal
The problem of cleaning, provides a kind of coal-fired lime sleeve kiln combusting room device and its Slagoff method with slag tap function.
To achieve the goals above, present invention employs the following technical solutions: a kind of fire coal lime sleeve kiln combustion chamber
Device, including burner block, burning chamber shell, cannular combustion chamber, burner block are arranged in burning chamber shell end, and burner block is equipped with
Burner, cannular combustion chamber are arranged on the inside of burning chamber shell；The cannular combustion chamber is obliquely installed, and is equipped at the top of cannular combustion chamber
Chamber temperature detector, cannular combustion chamber bottom offer the diversion trench of strip along central axes direction, and diversion trench lower end is set
There is the ash discharging hole through burning chamber shell, collection apparatus for ash is equipped with below ash discharging hole, collection apparatus for ash includes the flue-dust retainer being vertically arranged,
Flue-dust retainer upper end connects ash discharging hole, and flue-dust retainer side wall is equipped with cool air hose, and cool air hose is equipped with flowmeter and electric control valve, flue-dust retainer
Inside is equipped with flue-dust retainer temperature monitor, and flue-dust retainer lower end is equipped with ash gate, and ash gate connects revolving plow reclaimer.
Further, the cannular combustion chamber is equipped with driving air duct close to one end of burner block, and driving air duct is in volute, drives
The air inlet in dynamic air duct is located on burning chamber shell, drives the air outlet in air duct to be located at cannular combustion chamber, and drive air duct
Section is gradually become smaller by air inlet to air outlet.
Further, the ash discharging hole flare, the big mouth down of ash discharging hole.
Further, cannular combustion chamber central axes angle with horizontal plane is 10 °.
According to the Slagoff method of above-mentioned combusting room device: spraying into the mistake that cannular combustion chamber burns through burner in coal dust
Cheng Zhong, the ash content in coal dust are fired into molten slag and fall into diversion trench, and the ash discharging hole then through diversion trench lower end is fallen into
In flue-dust retainer, molten slag is passed through cold front heavy rain as solid, powdery and scoriform object by cool air hose in flue-dust retainer, then passes through
The discharge of flue-dust retainer lower end revolving plow reclaimer.
Further, the ash content ash fusion point in the coal dust is less than 1200 DEG C, fineness of pulverized coal R75 < 10%, coal dust firing
In the process, cannular combustion chamber temperature is not less than 1200 DEG C.
The utility model has the advantages that (1) present invention can be achieved in coal-fired lime sleeve kiln combustion chamber the online slag tap of slagging and from
Cleaning；(2) compared with traditional sleeve kiln combustion chamber, slagging in manual cleaning combustion chamber is not needed, does not need to stop kiln cleaning yet
Slagging improves the production operational availability of sleeve kiln；(3) collection provided with coal ash melt cinder and outer arranging device, melt cinder may not flow into
Wall built-up and sizing are caused in kiln, but is expelled directly out outside kiln, and any adverse effect is not generated to production；(4) the coal ash knot collected
Slag be solid particulate matter or powder, it is easy to clean；(5) have to temperature in chamber temperature, coal dust ash fusion point sum aggregate ash bucket clear
It is required that realizing the automation control of combustion chamber liquid deslagging.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of combusting room device of the present invention；
Fig. 2 is the structural schematic diagram of diversion trench；
Fig. 3 is driving air channel structure schematic diagram；
Fig. 4 is the structural schematic diagram for collecting apparatus for ash.
In figure: 1- burner, 2- burner block, 3- burning chamber shell, the resistance to material of 4-, 5- drive air duct, 5-1- air inlet, and 5-2- goes out
Air port, 6- cannular combustion chamber, 7- diversion trench, 8- chamber temperature detector, 9- ash discharging hole, 10- collection apparatus for ash, 11- impeller are given
Material machine, 12- flue-dust retainer, 13- cool air hose, 14- flowmeter, 15- flue-dust retainer temperature monitor, 16- electric control valve, 17- deslagging
Door, 18- kiln shell.
Specific embodiment:
Further explanation is done to the present invention with reference to the accompanying drawing.
As illustrated in fig. 1 and 2, a kind of coal-fired lime sleeve kiln combusting room device of the invention, including burner block 2, combustion chamber
Shell 3, cannular combustion chamber 6.Burning chamber shell 3 is fixed on the kiln shell 18 of sleeve kiln.Burner block 2 is arranged in burning chamber shell 3
End, burner block 2 are equipped with burner 1, and the setting of cannular combustion chamber 6 is in 3 inside of burning chamber shell, and cannular combustion chamber 6 is close to burner
One end of brick 2 is equipped with driving air duct 5.3 outer wall of burning chamber shell and 6 inner wall of cannular combustion chamber are equipped with resistance to material 4.
The cannular combustion chamber 6 is obliquely installed, and 6 central axes angle with horizontal plane of cannular combustion chamber is 10 °.Cannular combustion chamber
The resistance to material 4 at 6 tops is equipped with chamber temperature detector 8, opens up on the resistance to material 4 of 6 bottom of cannular combustion chamber along central axes direction
There is the diversion trench 7 of strip, 7 lower end of diversion trench is equipped with the ash discharging hole 9 through burning chamber shell 3, institute close to the position of kiln shell 18
State 9 flare of ash discharging hole, the big mouth down of ash discharging hole 9.Collection apparatus for ash 10 is equipped with below ash discharging hole 9.
As shown in figure 3, the cannular combustion chamber 6 is equipped with driving air duct 5 close to one end of burner block 2, driving air duct 5 is in snail
The air inlet 5-1 of shape, driving air duct 5 is located on burning chamber shell 3, and the air outlet 5-2 in driving air duct 5 is located at cannular combustion chamber 6,
And the section in air duct 5 is driven to be gradually become smaller by air inlet 5-1 to air outlet 5-2.After external wind introduces driving air duct 5, along
The rotation of volute line accelerates, and then passes to cannular combustion chamber 6, the flame in cannular combustion chamber 6 can be wrapped up and allow combustion air and fire
Flame is rotated in cannular combustion chamber 6, to facilitate coal dust full combustion.
As shown in figure 4, the collection apparatus for ash 10 includes the flue-dust retainer 12 being vertically arranged, 12 upper end of flue-dust retainer connects ash discharging hole
9,12 side wall of flue-dust retainer is equipped with cool air hose 13, and cool air hose 13 is equipped with flowmeter 14 and electric control valve 16, in flue-dust retainer 12
Portion is equipped with flue-dust retainer temperature monitor 15, and 12 lower end of flue-dust retainer is equipped with ash gate 17, and ash gate 17 connects revolving plow reclaimer 11.
When coal dust is when cannular combustion chamber 6 is burnt, generation negative pressure in cannular combustion chamber 6, outside air can be through cold wind
Pipe 13 enters flue-dust retainer 12, and temperature in flue-dust retainer 12 can be monitored in real time in flue-dust retainer temperature monitor 15, by cool air hose 13
Gas flow can be adjusted in real time according to temperature in flue-dust retainer 12.Revolving plow reclaimer 11 uses sealed construction, it is ensured that without outer
Boundary's air is entered in flue-dust retainer 12 by revolving plow reclaimer 11.
According to the Slagoff method of above-mentioned combusting room device: spraying into the mistake that cannular combustion chamber 6 burns through burner 1 in coal dust
Cheng Zhong, the ash content in coal dust are fired into molten slag and fall into diversion trench 7, and the ash discharging hole 9 then through 7 lower end of diversion trench is fallen
Entering in flue-dust retainer 12, molten slag, which is passed through cold front heavy rain by cool air hose 13 in flue-dust retainer 12, becomes solid, powdery and scoriform object,
Then it is discharged by 12 lower end revolving plow reclaimer 11 of flue-dust retainer.In order to guarantee that the ash content in coal dust can in cannular combustion chamber 6
Sufficiently melting, the ash content ash fusion point in the coal dust is less than 1200 DEG C, fineness of pulverized coal R75 < 10%, during coal dust firing,
6 temperature of cannular combustion chamber is not less than 1200 DEG C.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. a kind of fire coal lime sleeve kiln combusting room device, including burner block (2), burning chamber shell (3), cannular combustion chamber (6),
Burner block (2) setting is equipped with burner (1) in burning chamber shell (3) end, burner block (2), and cannular combustion chamber (6) setting is being fired
It burns on the inside of room housing (3)；It is characterized by: the cannular combustion chamber (6) is obliquely installed, combustion is equipped at the top of cannular combustion chamber (6)
It burns room temperature detector (8), cannular combustion chamber (6) bottom offers the diversion trench (7) of strip, diversion trench along central axes direction
(7) lower end is equipped with the ash discharging hole (9) through burning chamber shell (3), is equipped with collection apparatus for ash (10) below ash discharging hole (9), collects ash dress
Setting (10) includes the flue-dust retainer (12) being vertically arranged, and flue-dust retainer (12) upper end connects ash discharging hole (9), and flue-dust retainer (12) side wall is equipped with
Cool air hose (13), cool air hose (13) are equipped with flowmeter (14) and electric control valve (16), are equipped with flue-dust retainer inside flue-dust retainer (12)
Temperature monitor (15), flue-dust retainer (12) lower end are equipped with ash gate (17), and ash gate (17) connects revolving plow reclaimer (11).
2. a kind of coal-fired lime sleeve kiln combusting room device according to claim 1, it is characterised in that: the tubular burning
Room (6) is equipped with driving air duct (5) close to the one end of burner block (2), and driving air duct (5) is in volute, drives the air inlet of air duct (5)
(5-1) is located on burning chamber shell (3), and the air outlet (5-2) of driving air duct (5) is located at cannular combustion chamber (6), and drives wind
The section in road (5) is gradually become smaller by air inlet (5-1) to air outlet (5-2).
3. a kind of coal-fired lime sleeve kiln combusting room device according to claim 1 or 2, it is characterised in that: the ash discharge
Mouth (9) flare, the big mouth down of ash discharging hole (9).
4. a kind of coal-fired lime sleeve kiln combusting room device according to claim 3, it is characterised in that: the tubular burning
Room (6) central axes angle with horizontal plane is 10 °.
5. the Slagoff method of combusting room device according to claim 1, it is characterised in that: sprayed into coal dust through burner (1)
During cannular combustion chamber (6) is burnt, the ash content in coal dust is fired into molten slag and falls into diversion trench (7),
Then the ash discharging hole (9) through diversion trench (7) lower end is fallen into flue-dust retainer (12), and molten slag is in flue-dust retainer (12) by cool air hose
(13) cold front heavy rain is passed through as solid, powdery and scoriform object, is then arranged by flue-dust retainer (12) lower end revolving plow reclaimer (11)
Out.
6. the Slagoff method of combusting room device according to claim 5, it is characterised in that: the ash content ash in the coal dust is molten
O'clock less than 1200 DEG C, fineness of pulverized coal R75 < 10%, during coal dust firing, cannular combustion chamber (6) temperature is not less than 1200 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686905.8A CN106277856B (en) | 2016-08-17 | 2016-08-17 | Coal-fired lime sleeve kiln combusting room device and its Slagoff method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610686905.8A CN106277856B (en) | 2016-08-17 | 2016-08-17 | Coal-fired lime sleeve kiln combusting room device and its Slagoff method |
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| CN106277856A CN106277856A (en) | 2017-01-04 |
| CN106277856B true CN106277856B (en) | 2019-03-08 |
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| CN106705035B (en) * | 2017-01-16 | 2019-07-12 | 大峘集团有限公司 | A kind of sleeve kiln upper combustion chamber coal dust combustion method and device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205893099U (en) * | 2016-08-17 | 2017-01-18 | 大峘集团有限公司 | Coal -fired lime sleeve kiln combustor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2050929U (en) * | 1989-01-04 | 1990-01-10 | 东北工学院 | Cyclone combustion furnace for coal power |
| DE19843820A1 (en) * | 1998-09-24 | 2000-03-30 | Adolf Schmidt | Process for operating a shaft kiln for burning limestone uses natural gas, heating oil or coal dust as fuel in two combustion periods |
| CN201940176U (en) * | 2011-03-04 | 2011-08-24 | 湖南湘达环保工程有限公司 | Double-alkali integrated device for flue gas desulfurization, regeneration, separation and slag discharge |
| CN102875037A (en) * | 2012-10-23 | 2013-01-16 | 石家庄市新华工业炉有限公司 | Ash discharging system for sleeve kiln |
| CN104058608B (en) * | 2014-06-15 | 2016-04-06 | 石家庄新华能源环保科技股份有限公司 | A kind of shaft furnace of partition heated material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205893099U (en) * | 2016-08-17 | 2017-01-18 | 大峘集团有限公司 | Coal -fired lime sleeve kiln combustor device |
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