CN107940475A - A kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device - Google Patents
A kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device Download PDFInfo
- Publication number
- CN107940475A CN107940475A CN201711394123.8A CN201711394123A CN107940475A CN 107940475 A CN107940475 A CN 107940475A CN 201711394123 A CN201711394123 A CN 201711394123A CN 107940475 A CN107940475 A CN 107940475A
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- Prior art keywords
- combustion chamber
- exhaust gas
- combustion
- combustible
- chamber
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- 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
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
A kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device of the present invention, device includes ignition smooth combustion regenerative apparatus, overfire air device, combustion chamber, combustible exhaust gas entrance, one end connection combustible exhaust gas entrance of the combustion chamber, the other end exports for combustion product gases, ash discharging hole is equipped with the bottom of combustion chamber, wear-resisting boss is equipped with the inner wall of combustion chamber, exit is equipped with barricade in the combustion chamber, in the circumferentially disposed wall in the combustion chamber of the overfire air device；The ignition smooth combustion regenerative apparatus is arranged on combustible exhaust gas entrance, leads to combustion chamber, and the combustible exhaust gas entrance is contraction diffusion structure.Compared with prior art, the beneficial effects of the invention are as follows：Exhaust-gas treatment is the safe exhaust gas without combustible for technological requirement and exhaust gas constituents by the present invention, the exhaust gas after burning is carried out heat recovery by heat recovery equipments such as waste heat boilers, while ensure qualified discharge.
Description
Technical field
The present invention relates to vanadium titanium prereduction rotary kiln exhaust-gas treatment field, more particularly to a kind of processing vanadium titanium reduction rotary kiln
The chamber structure and technique of exhaust device.
Background technology
Pre-reduction treatment can be carried out to schreyerite by rotary kiln device in a kind of vanadium titanium production process.Rotary kiln
Interior is positive pressure reducing atmosphere, without O2.Rotary kiln air outlet requires control micro-positive pressure (10~30pa).After prereduction reaction
It can produce containing a small amount of H2, CO (combustible content≤15%) and higher dustiness (about 20~30g/Nm3) high temperature (600~
700 DEG C) combustible exhaust gas.Contain substantial amounts of carbon dust (C) in ash content, this portion can just discharge after having to pass through processing.By
Very low in combustible content, high temperature air and the mixed temperature of cold air are about 350 DEG C, and due to the shadow of noncombustible matter
Ring, so such a exhaust gas is not easy to stablize completely burned.
The content of the invention
The object of the present invention is to provide a kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device, pin
By exhaust-gas treatment it is the safe exhaust gas without combustible to technological requirement and exhaust gas constituents, makes the exhaust gas after burning can be by waste heat pot
The heat recovery equipments such as stove carry out heat recovery, while ensure qualified discharge.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of chamber structure for handling vanadium titanium reduction rotary kiln exhaust device, including it is ignition smooth combustion regenerative apparatus, secondary
Wind apparatus, combustion chamber, combustible exhaust gas entrance, one end connection combustible exhaust gas entrance of the combustion chamber, the other end is combustion product gases
Outlet, is equipped with ash discharging hole in the bottom of combustion chamber, wear-resisting boss is equipped with the inner wall of combustion chamber, exit is set in the combustion chamber
There is a barricade, in the circumferentially disposed wall in the combustion chamber of the overfire air device；The ignition smooth combustion regenerative apparatus is arranged on flammable useless
Gas entrance, lead to combustion chamber, and the combustible exhaust gas entrance is contraction diffusion structure.
The overfire air device include Secondary Air entrance, Secondary Air manifold, Secondary Air branch pipe, overfire air jet, described two
Secondary wind entrance is introduced from combustion chamber end, connects Secondary Air manifold, and Secondary Air manifold is circumferentially disposed in the inner wall of combustion chamber, if
Axially in the inner wall of combustion chamber, the end connection Secondary Air of Secondary Air branch pipe is total for setting, radial equipartition for dry Secondary Air branch pipe
Manage, several overfire air jets and combustion chamber are provided with Secondary Air branch pipe, the overfire air jet is axial along burner
Distribution and combustion chamber radial skew are set, and the incline direction of all overfire air jets is consistent.
The overfire air jet is axially of the firing chamber with different tube diameters packet layout.
A kind of burning process for handling vanadium titanium reduction rotary kiln exhaust gas：
Lighted a fire by ignition smooth combustion regenerative apparatus, flame kept burning day and night is formed into combustion chamber in combustible exhaust gas entrance, to burning
Room carries out warming temperature, and it is 0~-50Pa to control combustion chambers burn smoke outlet pressure；Combustible exhaust gas is entered by injection to burn
Indoor Combustion；Overfire air fan is opened when chamber temperature reaches 800~900 DEG C, it is combustion-supporting that swirl flow is passed through into combustion chamber
Wind, adjusts Secondary Air air quantity, and it is 850~950 DEG C to control combustion chambers burn flue gas exit temperature；Non-combustible dust is in combustion chamber
Burning zone and after-flame section are divided to two sections to be settled, and the non-combustible grit in burning zone collides the wear-resisting boss of roof and falls during exercise
Fall and fall into ash discharging hole, the non-combustible dust of after-flame section is stopped by barricade, dust is fallen into last ash discharging hole；Without flammable
The safe exhaust gas of thing exports discharge from the combustion product gases of combustion chamber.
Compared with prior art, the beneficial effects of the invention are as follows：
The structure of the present invention is simple, is easy to Project Realization.
1) present invention has two-stage dedusting function, using gravitational dust collection principle, is divided to two sections of progress in burning zone and after-flame section
Dedusting, can effectively remove more than 50% non-combustible dust, reduce influence of the follow-up workshop section to equipment.It is non-combustible in burning zone
Grit is fallen down when colliding roof high spot during exercise falls into second, third ash bucket.It is resistance to that fire resisting is equipped with after-flame section
Barricade is ground, stops flue dust, flue dust is fallen into the 4th ash bucket.
2) secondary air system of the invention is radial direction tangential firing, and Secondary Air is in the combustion chamber vortex flow field, makes gas
Agitation is violent, and oxygen and combustible are uniformly mixed, and burning is complete.
3) Secondary Air of the invention has the function of preheating and heat-insulation and heat-preservation, and secondary air channel is distributed among the interlayer of combustion chamber,
Play the role of cooled furnace wall in heating process, the consumption of heat-barrier material can be saved, save equipment investment 15%.
4) present invention is equipped with ignition smooth combustion, regenerative apparatus, and 900 DEG C of high temperature can be maintained for more than in lighting-up tuyere, ensures combustion
Stablizing for material is flammable, adapts to larger propellant composition change.
5) present invention is negative pressure operational outfit, environmental-friendly, does not burn with anger, does not reveal pollutant.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the A-A sectional drawings of Fig. 1.
Fig. 3 is the B-B sectional drawings of Fig. 1.
Fig. 4 is the overall appearance figure of the present invention.
In figure：1 First air heat exchange induction apparatus, 2 combustible exhaust gas entrances, 3 ignition smooth combustion regenerative apparatuses, 4 overfire air devices,
5 combustion chambers, 2-1 wear-resistant temperature-resistant layers, 2-2 recuperation layers, 2-3 thermal insulation layers, 4-1 Secondary Air entrances, 4-2 Secondary Airs manifold, 4-3 bis- times
Wind branch pipe, 4-4 overfire air jets, 5-1 refractory materials, 5-2 barricades, 5-3 scuff-resistant coatings, the outlet of 5-4 combustion product gases, 5-5 second, the
Three ash discharging holes, the 4th ash discharging holes of 5-6, the wear-resisting boss of 5-7,5-8 manhole doors.
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings：
See Fig. 1-Fig. 4, a kind of chamber structure for handling vanadium titanium reduction rotary kiln exhaust device, including ignition smooth combustion accumulation of heat
Device 3, overfire air device 4, combustion chamber 5, combustible exhaust gas entrance 2, one end connection combustible exhaust gas entrance 2 of the combustion chamber 5, separately
One end exports 5-4 for combustion product gases, is equipped with ash discharging hole in the bottom of combustion chamber 5, wear-resisting boss is equipped with the inner wall of combustion chamber 5
5-7, is equipped with barricade 5-2 at 5 inner outlet of combustion chamber, and the overfire air device 4 is circumferentially disposed in 1 inner wall of combustion chamber；It is described
Ignition smooth combustion regenerative apparatus 3 is arranged on combustible exhaust gas entrance 2, leads to combustion chamber 5, and the combustible exhaust gas entrance 2 spreads to shrink
Structure.
Combustible exhaust gas entrance 2 is followed successively by wear-resistant temperature-resistant layer 2-1 by accumulation of heat brick masonry from inside to outside, recuperation layer 2-2, heat-insulated
Layer 2-3.
The overfire air device 4 includes Secondary Air entrance 4-1, Secondary Air manifold 4-2, Secondary Air branch pipe 4-3, Secondary Air spray
Mouth 4-4, the Secondary Air entrance 4-1 are introduced from 5 end of combustion chamber, and connection Secondary Air manifold 4-2, Secondary Air manifold 4-2 are circumferential
Be arranged in the inner wall of combustion chamber 5, several Secondary Air branch pipes 4-3 axially set, radial equipartition in the inner wall of combustion chamber 5,
Several overfire air jets 4-4 is provided with end connection the Secondary Air manifold 4-2, Secondary Air branch pipe 4-3 of Secondary Air branch pipe 4-3
Being connected with combustion chamber 5, the overfire air jet 4-4 is set along the axial distribution of burner 5, with 5 radial skew of combustion chamber, and all two
The incline direction of secondary wind nozzle 4-4 is consistent.The Secondary Air entrance 4-1 of overfire air device 4 is arranged in the both sides of combustion chamber 5, secondary
Wind manifold 4-2 are circumferentially disposed in 5 end of combustion chamber.
The overfire air jet 4-4 is axial with different tube diameters packet layout along combustion chamber 5.
The shape of overfire air device 4 is not limited to the circular cross-section shown in figure or square or other shapes.It is secondary
Wind manifold 4-2 and Secondary Air branch pipe 4-3 are coated in the refractory material 5-1 of 5 inner wall of combustion chamber.
Combustion chamber 5 surrounds tubular by refractory material 5-1, is additionally provided with inspection manhole door 5-8 on combustion chamber 5, outside combustion chamber 5
Shape is not limited to the circular cross-section shown in figure or square.Combustion chamber 5 exports barricade 5-2 parallel to the burning of combustion chamber 5 cigarette
Gas exports 5-4, and misplace arrangement up and down, highly not less than combustion chamber cylinder inside radius, if combustion chamber is rectangle, is highly not less than
The half of combustion chamber elevation, it is minimum dimension to be up to shown in diameter or interior 2/3 high, Fig. 2.
The present invention also sets up combustor exit temperature meter, combustor exit pressure gauge.Combustor exit pressure gauge and burning
Room outlet temperature meter is located at combustion chamber 5 combustion product gases outlet 5-4.
The air force of 5 outlet pressure of combustion chamber wind turbine as selected by user is adjusted and is controlled.
Ignition smooth combustion regenerative apparatus 3 uses high heating value fuel gas or liquid, is arranged in combustible exhaust gas entrance 2, combustion chamber 5
Inlet.Ignition smooth combustion regenerative apparatus 3 uses combustor or gas burner or oil burner.Ignition smooth combustion regenerative apparatus 3
Contain igniting wind turbine, flame detector, burner, gas fuel control valve and proportional controller.
The heat accumulation function of steady combustion regenerative apparatus 3 is provided by the recuperation layer 2-1 used in combustible exhaust gas entrance 2, recuperation layer 2-1
Built by laying bricks or stones using heat-storing material, the temperature at burner can be kept to be higher than 900 DEG C, ensure fuel gas stablizes burning.
A kind of burning process for handling vanadium titanium reduction rotary kiln exhaust gas：
It must be purged before equipment initial launch, the wind turbine that the setting of 5-4 rears is exported by 5 combustion product gases of combustion chamber will
Fuel gas inside combustion chamber 5 extracts.
Lighted a fire by ignition smooth combustion regenerative apparatus 3, flame kept burning day and night is formed into combustion chamber 5 in combustible exhaust gas entrance 2, to combustion
Burn room 5 and carry out warming temperature, it is 0~-50Pa to control pressure at combustion chamber 5 combustion product gases outlet 5-4；Combustible exhaust gas by injection into
Enter burning in combustion chamber 5；Overfire air fan is opened when 5 temperature reaches 800~900 DEG C when combustion chamber, is passed through into combustion chamber 5 secondary
Eddy flow combustion air, adjusts Secondary Air air quantity, and it is 850~950 DEG C to control combustion chamber 5 combustion product gases outlet 5-4 temperature；Can not burnning ash
Burning zone and after-flame section of the dirt in combustion chamber 5 are divided to two sections to be settled, and the non-combustible grit in burning zone collides during exercise
The wear-resisting boss 5-7 of roof, which is fallen down, falls into ash discharging hole, and the non-combustible dust of after-flame section is stopped by barricade 5-2, falls into dust
Last ash discharging hole；Combustion product gases outlet 5-4 discharge of the safe exhaust gas without combustible from combustion chamber 5.
Combustible exhaust gas entrance 2 connects First air heat exchange induction apparatus 1, and combustible exhaust gas is introduced into First air heat exchange induction apparatus
1, combustible exhaust gas injection is entered by combustible exhaust gas entrance 2 by First air heat exchange induction apparatus 1.
Claims (4)
1. a kind of chamber structure for handling vanadium titanium reduction rotary kiln exhaust device, it is characterised in that including ignition smooth combustion accumulation of heat
Device, overfire air device, combustion chamber, combustible exhaust gas entrance, one end connection combustible exhaust gas entrance of the combustion chamber, the other end are
Combustion product gases export, and are equipped with ash discharging hole in the bottom of combustion chamber, wear-resisting boss are equipped with the inner wall of combustion chamber, in the combustion chamber
Exit is equipped with barricade, in the circumferentially disposed wall in the combustion chamber of the overfire air device；The ignition smooth combustion regenerative apparatus is set
In combustible exhaust gas entrance, lead to combustion chamber, the combustible exhaust gas entrance is contraction diffusion structure.
2. a kind of chamber structure for handling vanadium titanium reduction rotary kiln exhaust device according to claim 1, its feature exist
In the overfire air device includes Secondary Air entrance, Secondary Air manifold, Secondary Air branch pipe, overfire air jet, and the Secondary Air enters
Mouth is introduced from combustion chamber end, connects Secondary Air manifold, Secondary Air manifold is circumferentially disposed in the inner wall of combustion chamber, several two
Axially setting, radial equipartition are in the inner wall of combustion chamber for secondary wind branch pipe, and the end connection Secondary Air manifold of Secondary Air branch pipe is secondary
Be provided with several overfire air jets and combustion chamber on wind branch pipe, the overfire air jet along burner axially distribution, with
Combustion chamber radial skew is set, and the incline direction of all overfire air jets is consistent.
3. a kind of chamber structure for handling vanadium titanium reduction rotary kiln exhaust device according to claim 2, its feature exist
In the overfire air jet is axially of the firing chamber with different tube diameters packet layout.
A kind of 4. burning of pattern handling vanadium titanium reduction rotary kiln exhaust gas using as described in claim 1-3 wherein any one
Technique, it is characterised in that：
Lighted a fire by ignition smooth combustion regenerative apparatus, flame kept burning day and night formed into combustion chamber in combustible exhaust gas entrance, to combustion chamber into
Row warming temperature, it is 0~-50Pa to control combustion chambers burn smoke outlet pressure；Combustible exhaust gas is entered in combustion chamber by injection
Burning；Overfire air fan is opened when chamber temperature reaches 800~900 DEG C, swirl flow combustion air is passed through into combustion chamber, is adjusted
Secondary Air air quantity is saved, it is 850~950 DEG C to control combustion chambers burn flue gas exit temperature；Burning of the non-combustible dust in combustion chamber
Section and after-flame section are divided to two sections to be settled, and the non-combustible grit in burning zone collides the wear-resisting boss of roof and drops down during exercise
To fall into ash discharging hole, the non-combustible dust of after-flame section is stopped by barricade, dust is fallen into last ash discharging hole；Without combustible
Safe exhaust gas exports discharge from the combustion product gases of combustion chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394123.8A CN107940475A (en) | 2017-12-21 | 2017-12-21 | A kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394123.8A CN107940475A (en) | 2017-12-21 | 2017-12-21 | A kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device |
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| Publication Number | Publication Date |
|---|---|
| CN107940475A true CN107940475A (en) | 2018-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711394123.8A Pending CN107940475A (en) | 2017-12-21 | 2017-12-21 | A kind of chamber structure and technique for handling vanadium titanium reduction rotary kiln exhaust device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4141327A4 (en) * | 2020-04-22 | 2023-12-27 | Tserendorj, Munkhbaatar | Device for reburning furnace combustion products |
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| US4063870A (en) * | 1974-11-06 | 1977-12-20 | Stein Industrie | Combustion of hot gases of low calorific power |
| SU1395902A2 (en) * | 1986-10-21 | 1988-05-15 | Всесоюзный Научно-Исследовательский И Проектный Институт Вторичных Цветных Металлов | Chamber for reburning gases |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4141327A4 (en) * | 2020-04-22 | 2023-12-27 | Tserendorj, Munkhbaatar | Device for reburning furnace combustion products |
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