CN109458809A - A kind of drying of lignite inertia and sorting unit and method for station boiler - Google Patents
A kind of drying of lignite inertia and sorting unit and method for station boiler Download PDFInfo
- Publication number
- CN109458809A CN109458809A CN201811607898.3A CN201811607898A CN109458809A CN 109458809 A CN109458809 A CN 109458809A CN 201811607898 A CN201811607898 A CN 201811607898A CN 109458809 A CN109458809 A CN 109458809A
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- Prior art keywords
- lignite
- drying
- inertia
- sorting unit
- coal
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- 239000003077 lignite Substances 0.000 title claims abstract description 160
- 238000001035 drying Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 54
- 230000010354 integration Effects 0.000 claims abstract description 25
- 239000003245 coal Substances 0.000 claims abstract description 22
- 238000013459 approach Methods 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 31
- 239000003546 flue gas Substances 0.000 claims description 31
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 235000019504 cigarettes Nutrition 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000002817 coal dust Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 238000001704 evaporation Methods 0.000 description 6
- 230000002269 spontaneous effect Effects 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
- F23L15/02—Arrangements of regenerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- 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 present invention relates to brown coal drying and upgrading technical fields, specially a kind of drying of lignite inertia and sorting unit and method for station boiler, including inertia drying and sorting integration apparatus, its raw coal entrance is connected by the air preheater gas approach of high-temperature furnace smoke pipeline and station boiler, thick lignite outlet is exported with thin lignite to be connected by low-temperature furnace smoke pipeline with air preheater exhaust pass, and discharge is connected by pipeline with the brown-coal burner being located on boiler furnace；Inertia is dry and sorting integration apparatus includes the charging gear being successively tightly connected, drying device, sorting unit, blower mill and the collection device being connected to sorting unit bottom；Drying device inner wall is equipped with cant timber；The thin lignite outlet of sorting unit is connected to blower mill entrance, and the thick lignite outlet in bottom is connected to collection device；Charging gear entrance is connect by high-temperature furnace smoke pipeline with air preheater gas approach；Blower mill outlet is discharge, is connect with brown-coal burner.
Description
Technical field
The present invention relates to brown coal drying and upgrading technical field, specially a kind of lignite inertia for station boiler it is dry and
Sorting unit and method.
Background technique
The global resources total value of lignite is about 4.35 trillion tons, accounts for the 21% of worldwide coal resource gross reserves.Lignite conduct
Low-order coal, belongs to the coal formed after the paludification stage, does not undergo large-scale high temperature and pressure incoalation, thus, lignite
Still remain with a large amount of moisture (wet basis content is about in 30%-60%).Different upgradings have pan feeding lignite moisture using technology
Different requirement, for gasification process, it is desirable that for lignite moisture in 5%-15%, pulverized coal friring furnace technology then requires lignite moisture control
Make the range in 12%-15%.
Drying and dehydrating has become the premise and key link that lignite high-efficiency cleaning utilizes.Brown coal drying not only makes subsequent technique
Index is easier to realize, and can achieve preferable environment and economic benefit.The state removed according to drying and dehydrating process moisture
Difference, brown coal drying and dehydrating technology can be divided into evaporation drying dehydration and non-evaporation drying is dehydrated two major classes.However, non-evaporating dehydrolysis
Technology presently, there are huge be limited in that in its production process can generate a large amount of high concentrated organic wastewaters, it is difficult to pass through through
Effective mode of helping carries out purified treatment to it, then becomes the side of effective processing brown coal drying and dehydrating using evaporation drying
Formula.Due to advantages such as evaporation drying mode wide adaptability, the fast, consecutive productions easy to accomplish of rate of drying, steamed with hot wind or water
Vapour is that the evaporation drying dewatering process of dried medium is still the most commonly used application form of current brown coal drying, but this lignite
The disadvantages such as the generally existing system complex of drying mode, safety be low.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provide it is a kind of design rationally, simple process, security of system
Height, can effectively improve lignite utilization rate the lignite inertia for station boiler is dry and sorting unit and method.
The present invention is to be achieved through the following technical solutions:
A kind of drying of lignite inertia and sorting unit for station boiler, including inertia is dry and sorting integration is set
Standby, brown-coal burner, high-temperature furnace smoke pipeline and low-temperature furnace smoke pipeline；
The inertia is dry and sorts the sky that integration apparatus raw coal entrance passes through high-temperature furnace smoke pipeline and station boiler
Pre- device gas approach connection, thick lignite outlet is exported with thin lignite to be connected by low-temperature furnace smoke pipeline with air preheater exhaust pass,
Discharge is connected by pipeline with the brown-coal burner on the boiler furnace that station boiler is arranged in；
The inertia is dry and sorting integration apparatus includes the charging gear being successively tightly connected, drying device, divides
Screening device, blower mill and the collection device being connected to sorting unit bottom；The charging gear entrance enters for raw coal
Mouthful；The drying device inner wall is provided with cant timber, the outlet of one end and charging gear, the other end and sorting unit
Entrance connection；The thin lignite outlet of the sorting unit side is connected to the entrance of blower mill, and the thick lignite of bottom goes out
Mouth is connected to collection device；
The entrance of the charging gear is connect by high-temperature furnace smoke pipeline with air preheater gas approach；The fan mill
The outlet of coal machine is discharge, is connect by pipeline with brown-coal burner；
The brown-coal burner setting is set on boiler furnace side wall or quadrangle, and with the OFA burner of station boiler
It sets in the same combustion zone of boiler furnace.
Preferably, the inside of OFA burner is arranged in the brown-coal burner.
Preferably, the drying device includes the rotary drive motor for rotating shell and rotation hull outside being arranged in；
The rotation shell is in hollow cylindrical shape, and input terminal rotary seal connects charging gear, output end rotary seal connection point
The entrance of screening device；Rotation inner walls are provided with cant timber.
Preferably, the collection device is internally provided with conveyor belt, and the tail portion of conveyor belt is provided with outlet.
Preferably, the exit of the collection device is connected by the exhaust pass of low-temperature furnace smoke pipeline and air preheater.
A kind of drying of lignite inertia and method for separating for station boiler, includes the following steps,
A. in air preheater gas approach extracting high-temperature low oxygen content furnace cigarette, it is dry that inertia is sent to by high-temperature furnace smoke pipeline
Dry and sorting integration apparatus raw coal entrance, while lignite being sent into inertia drying and sorting integration with high-temperature flue gas and is set
It is standby；High-temperature flue gas provides heat source for brown coal drying, and is in whole system in inertia flue gas atmosphere, lignite inertia it is dry and
Sorting integration apparatus in dry out, while lignite thrown in drying device by cant timber after fall, between lignite mutually
Collision is broken, and lignite downward downstream under cant timber effect；
B. enter sorting unit through dry and broken lignite, it is smaller for partial size and be not easy to the thin brown of secondary use
Coal continues to be carried to export through thin lignite by high-temperature flue gas to enter in blower mill, coal dust is further milled into, by high-temperature flue gas
It carries the discharge feeding through blower mill and is arranged in the brown-coal burner of boiler furnace utilization of burning；For partial size compared with
Big thick lignite then passes through thick lignite outlet and falls into collection device, is transported by conveyor belt, Collection utilization.
Preferably, in the step b, low-temperature furnace smoke is taken in air preheater exhaust pass, is sent to by low-temperature furnace smoke pipeline
The thin lignite of sorting unit side exports, and the furnace smoke temperature degree entered in blower mill is adjusted.
Preferably, in the step b, low-temperature furnace smoke is taken in air preheater exhaust pass, is sent by low-temperature furnace smoke pipeline
Collection device exit cools down the lignite in collection device, prevents lignite from meeting air spontaneous combustion in collection device exit.
Compared with prior art, the invention has the following beneficial technical effects:
It is dry to carry out inertia to lignite for the feature that the present invention is low by the furnace cigarette oxygen content using station boiler, temperature is high
Dry and sorting, is sent to the boiler for combustion utilization for the thin lignite for being not easy to secondary use, remaining thick lignite carries out secondary after collecting
It utilizes, effectively improves lignite utilization rate, and the lignite quality filtered out is high；Meanwhile whole system is in inertia flue gas environment,
It effectively prevent lignite and its volatile matter spontaneous combustion to explode, and drying carries part lignite with high-temperature flue gas and comes back in burner hearth,
Equivalent to increase flue gas recirculation, boiler economics are influenced smaller；Moreover, introducing blower mill using by low-temperature furnace smoke
Blower mill entrance furnace smoke temperature degree can be effectively reduced in the mode of entrance, protect blower mill blade,
The present invention by the way that brown-coal burner to be arranged in the inside of OFA burner, high temperature needed for meeting lignite burning and
Oxygen, and OFA burner is located at the main burner the top of boiler furnace, lignite burning does not influence the combustion of boiler original burner again
It burns.
Cant timber is arranged by rotating inner walls in drying device in the present invention, and lignite is rotated with drying device, in diagonal rib
Plate is acted on after lower lignite is tossed and being fallen, and makes bulk brown coal crushing, while cant timber can make lignite in rotation to drying device
Lower downstream.
The present invention can be sent in time the thick lignite of high-quality that screening is collected by the way that conveyor belt is arranged inside collection device
Collection device out carries out secondary use.
The present invention can effectively cool down lignite in collection device in such a way that low-temperature furnace smoke is introduced collection device outlet,
It prevents lignite from meeting air spontaneous combustion in collection device exit, further increases the security reliability of system.
The drying of lignite inertia and method for separating that the present invention uses, the furnace cigarette and lignite of high temperature low oxygen content are sent into simultaneously
It being dried, is crushed, sorting process in inertia drying and sorting integration apparatus, high-temperature flue gas provides heat source for brown coal drying,
It is in whole system in inertia flue gas atmosphere, high system safety.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the embodiment of the present invention.
Fig. 2 is that inertia is dry in the present invention and sorts the structural schematic diagram of integration apparatus.
In figure: inertia is dry and sorts integration apparatus 1, brown-coal burner 2, high-temperature furnace smoke pipeline 3, low-temperature furnace smoke pipeline
4, charging gear 5, drying device 6, rotation shell 61, rotary drive motor 62, sorting unit 7, blower mill 8, collection dress
Set 9, boiler furnace 10, air preheater 11, main burner 12, OFA burner 13, SOFA burner 14.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Embodiment 1
A kind of drying of lignite inertia and sorting unit for station boiler of the present invention, as depicted in figs. 1 and 2, including it is lazy
Property dry and sorting integration apparatus 1, brown-coal burner 2, high-temperature furnace smoke pipeline 3, low-temperature furnace smoke pipeline 4, charging gear 5, dry
Dry device 6, rotation shell 61, rotary drive motor 62, sorting unit 7, blower mill 8 and collection device 9；
The charging gear 5, drying device 6, sorting unit 7, blower mill 8 are successively tightly connected, and sort dress
Inertia drying and sorting integration apparatus 1 are formed after setting the collection device 9 of 7 bottoms connection；
5 entrance of charging gear is raw coal entrance, and raw coal entrance passes through high-temperature furnace smoke pipeline 3 and 11 entrance of air preheater
Flue connection；The charging gear 5 is connect with drying device 6；
The drying device 6 includes the rotary drive motor 62 for rotating shell 61 and being arranged in outside rotation shell 61；
The rotation shell 61 is in hollow cylindrical shape, and input terminal rotary seal connects charging gear 5, output end rotary seal connection
The entrance of sorting unit 7；Rotation 61 inner wall of shell is provided with cant timber；
The sorting unit 7 is connect with blower mill 8, and 7 side of sorting unit is the outlet of thin lignite, and bottom is thick brown
Coal export, thin lignite outlet are connected to the entrance of blower mill 8, and thick lignite outlet is connected to collection device 9, and collection device
9 outlets are connected by low-temperature furnace smoke pipeline 4 with 11 exhaust pass of air preheater, and collection device 9 is internally provided with conveyor belt；It is described
Sorting unit 7 internal diameter be greater than drying device 6 internal diameter, 7 side of sorting unit thin lignite outlet in necking be arranged, pass through
Horizontally disposed conical pipeline is connect with blower mill 8；
The outlet of the blower mill 8 is discharge, and discharge is by pipeline and station boiler is arranged in
Brown-coal burner 2 on boiler furnace 10 connects 8 entrance of blower mill and exports cigarette by low-temperature furnace smoke pipeline 4 and air preheater 11
Road connection；The inside of OFA burner 13 is arranged in the brown-coal burner 2, and the setting of OFA burner 13 with station boiler exists
The same combustion zone of boiler furnace 10；The axis of the blower mill 8 is lower than the axis of thin lignite outlet；
In actual use, concrete operations mode is as follows:
1. being sent in 11 inlet flue gas pipeline extracting high-temperature low oxygen content furnace cigarette of boiler air preheater by high-temperature furnace smoke pipeline 3
5 entrance of charging gear, lignite enter inertia drying and sorting integration apparatus 1, lignite with high-temperature flue gas through charging gear 5
It dries out in inertia drying and sorting integration apparatus 1；
2. high-temperature flue gas provides heat source for brown coal drying, and is in whole system in inertia flue gas atmosphere, lignite is prevented
And its volatile matter spontaneous combustion explosion；
3. lignite initially enters drying device 6 with high-temperature flue gas, drying device rotation inner walls are disposed with cant timber, brown
Coal is fallen after being tossed after rotating together under cant timber drive with rotation shell, and the biggish lignite of volume is carried out broken place
Reason, at the same lignite under cant timber effect to downstream under drying device；
4. broken lignite enters sorting unit 7, the tiny lignite in part is carried along into blower mill 8 by high-temperature flue gas
It is further milled into fine breeze, realizes the sorting of lignite；
5. the lignite for being not easy to secondary use is further milled into fine breeze in blower mill 8, taken by high-temperature flue gas
It is utilized with burning in the brown-coal burner 2 for being arranged in boiler furnace 10 is sent into, brown-coal burner 2 is arranged in boiler original OFA burning
In device 13, the region fire box temperature is higher, and 13 inner second air of OFA burner is air, meets condition needed for lignite burns；
6. the biggish lignite of partial size is transported in collection device 9 by conveyor belt, Collection utilization；
7. take low-temperature furnace smoke to be sent to 8 entrance of blower mill by low-temperature furnace smoke pipeline 4 in the outlet of air preheater 11, adjust into
Enter the furnace smoke temperature degree in blower mill 8, protects the blade of blower mill 8；
8. take low-temperature furnace smoke to be sent in collection device 9 by low-temperature furnace smoke pipeline 4 in the outlet of air preheater 11, it is cooling to collect dress
Interior lignite is set, prevents lignite from meeting air spontaneous combustion explosion.
Embodiment 2
A kind of drying of lignite inertia and method for separating for station boiler of the present invention, includes the following steps:
A. it in 11 gas approach extracting high-temperature low oxygen content furnace cigarette of air preheater, is sent to by high-temperature furnace smoke pipeline 3 lazy
Property dry and sorting 1 raw coal entrance of integration apparatus, while lignite being sent into high-temperature flue gas to inertia is dry and sorting one
Body equipment 1；High-temperature flue gas provides heat source for brown coal drying, and is in whole system in inertia flue gas atmosphere, and lignite is lazy
Property dry and sorting integration apparatus 1 in dry out, while lignite is tossed in drying device 6 with the rotation of rotation shell
After fall, strengthen lignite and high-temperature flue gas and exchange heat, and make relatively large brown coal crushing；
B. sorting unit 7 is downstream moved under cant timber effect through dry and broken lignite, for partial size
Thin lignite that is smaller and being not easy to secondary use continues to be carried to export through thin lignite by high-temperature flue gas to enter in blower mill 8,
It is further milled into coal dust, the discharge feeding through blower mill 8 is carried by high-temperature flue gas and is arranged in boiler furnace 10
Burning utilizes in brown-coal burner 2；Thick lignite biggish for partial size then passes through thick lignite outlet and falls into collection device 9, by defeated
Send belt-conveying, Collection utilization.
Wherein, in step b, low-temperature furnace smoke is taken in 11 exhaust pass of air preheater, sorting dress is sent to by low-temperature furnace smoke pipeline 4
The thin lignite outlet for setting 7 sides, is adjusted the furnace smoke temperature degree entered in blower mill 8.
Wherein, in step b, low-temperature furnace smoke is taken in 11 exhaust pass of air preheater, is sent by low-temperature furnace smoke pipeline 4 and collects dress
9 exits are set, the lignite in collection device 9 is cooled down, prevents lignite from meeting and is fired certainly in 9 exit of collection device chance air
It is fried.
In practical applications, extracting high-temperature furnace cigarette enters high-temperature furnace smoke pipeline system 3 specially before air preheater 11, and will
High-temperature flue gas is passed through 5 inlet of charging gear of the drying of lignite inertia and sorting integration apparatus 1, and lignite raw coal is with high-temperature flue gas
Enter the drying of lignite inertia together and sorting integration apparatus 1, lignite slough most of moisture under the action of high-temperature flue gas；It is brown
The cant timber that coal raw coal is disposed in rotation 61 inner wall of shell in drying device 6 is fallen after throwing, and bulk lignite raw coal is mutual
It is crushed under phase squeezing action；Broken lignite downstream moves into sorting unit 7 under cant timber induced effect, wherein carefully
Lignite enters blower mill 8 with high-temperature flue gas, and thin lignite is further milled into fine breeze in blower mill 8, by high temperature
Furnace cigarette is carried along into the burning of brown-coal burner 2 for being arranged in boiler furnace 10；Thick lignite enters collection device 9 in sorting unit 7,
The belt for being disposed in collection device 9 carries transport, forms high-quality lignite and carries out secondary use；It is taken in the outlet of air preheater 11 low
Warm furnace cigarette introduces 8 entrance of blower mill to low-temperature furnace smoke pipe-line system 4, is adjusted into the furnace smoke temperature of blower mill 8
Degree protects 8 blade of blower mill；It takes low-temperature furnace smoke to low-temperature furnace smoke pipe-line system 4 in the outlet of air preheater 11, and introduces collection
Device 9 is imported and exported, and lignite in cooling collection device plays explosion-proof；Whole system is under inert gas atmosphere, is prevented brown
Coal and its volatile matter spontaneous combustion explosion.
Claims (8)
1. a kind of drying of lignite inertia and sorting unit for station boiler, it is characterised in that: including inertia drying and sorting
Integration apparatus (1), brown-coal burner (2), high-temperature furnace smoke pipeline (3) and low-temperature furnace smoke pipeline (4)；
The inertia is dry and sorting integration apparatus (1) raw coal entrance passes through high-temperature furnace smoke pipeline (3) and station boiler
The connection of air preheater (11) gas approach, thick lignite outlet and the outlet of thin lignite pass through low-temperature furnace smoke pipeline (4) and air preheater (11)
Exhaust pass connection, discharge pass through pipeline and the brown-coal burner (2) being arranged on the boiler furnace (10) of station boiler
Connection；
The inertia is dry and sorting integration apparatus (1) includes charging gear (5), the drying device being successively tightly connected
(6), sorting unit (7), blower mill (8) and the collection device (9) being connected to sorting unit (7) bottom；Described gives
Material device (5) entrance is raw coal entrance；Described drying device (6) inner wall is provided with cant timber, one end and charging gear (5)
Outlet, the other end are connected to the entrance of sorting unit (7)；The thin lignite of described sorting unit (7) side exports and wind
The entrance connection of coal pulverizer (8) is fanned, the thick lignite outlet of bottom is connected to collection device (9)；
The entrance of the charging gear (5) is connect by high-temperature furnace smoke pipeline (3) with air preheater (11) gas approach；Described
The outlet of blower mill (8) is discharge, is connect by pipeline with brown-coal burner (2)；
The brown-coal burner (2) is arranged on boiler furnace (10) side wall or quadrangle, and the OFA burner with station boiler
(13) it is arranged in the same combustion zone of boiler furnace (10).
2. a kind of drying of lignite inertia and sorting unit for station boiler according to claim 1, it is characterised in that:
Inside of brown-coal burner (2) setting in OFA burner (13).
3. a kind of drying of lignite inertia and sorting unit for station boiler according to claim 1, it is characterised in that:
The drying device (6) includes the rotary drive motor (62) of rotation shell (61) and setting in rotation shell (61) outside；
The rotation shell (61) is in hollow cylindrical shape, and input terminal rotary seal connects charging gear (5), output end rotary seal
Connect the entrance of sorting unit (7)；Rotation shell (61) inner wall is provided with cant timber.
4. a kind of drying of lignite inertia and sorting unit for station boiler according to claim 1, it is characterised in that:
The collection device (9) is internally provided with conveyor belt, and the tail portion of conveyor belt is provided with outlet.
5. a kind of lignite inertia for station boiler according to claim 1 or 4 is dry and sorting unit, feature exist
In: the exit of the collection device (9) is connect by low-temperature furnace smoke pipeline (4) with the exhaust pass of air preheater (11).
6. a kind of drying of lignite inertia and method for separating for station boiler, it is characterised in that: as claim 1-5 is any one
Device described in kind, includes the following steps,
A. it in air preheater (11) gas approach extracting high-temperature low oxygen content furnace cigarette, is sent to by high-temperature furnace smoke pipeline (3) lazy
Property dry and sorting integration apparatus (1) raw coal entrance, while lignite being sent into high-temperature flue gas to inertia is dry and sorting
Integration apparatus (1)；High-temperature flue gas provides heat source for brown coal drying, and is in whole system in inertia flue gas atmosphere, lignite
Inertia is dry and sorting integration apparatus (1) in dry out, while after lignite is thrown in drying device (6) by cant timber
It falls, mutually collision is broken between lignite, and lignite downward downstream under cant timber effect；
B. enter sorting unit (7) through dry and broken lignite, it is smaller for partial size and be not easy to the thin brown of secondary use
Coal continues to be carried to export through thin lignite by high-temperature flue gas to enter in blower mill (8), coal dust is further milled into, by high temperature
Furnace cigarette carries the discharge through blower mill (8) and is sent into burning in the brown-coal burner (2) for being arranged in boiler furnace (10)
It utilizes；Thick lignite biggish for partial size then passes through thick lignite outlet and falls into collection device (9), is transported, is collected by conveyor belt
It utilizes.
7. a kind of drying of lignite inertia and method for separating for station boiler according to claim 6, it is characterised in that:
In the step b, in air preheater (11), exhaust pass takes low-temperature furnace smoke, is sent to sorting unit by low-temperature furnace smoke pipeline (4)
(7) the thin lignite outlet of side, is adjusted the furnace smoke temperature degree entered in blower mill (8).
8. a kind of drying of lignite inertia and method for separating for station boiler according to claim 6, it is characterised in that:
In the step b, in air preheater (11), exhaust pass takes low-temperature furnace smoke, is sent into collection device by low-temperature furnace smoke pipeline (4)
(9) exit cools down the lignite in collection device (9), prevents lignite from meeting air certainly in collection device (9) exit
Combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607898.3A CN109458809B (en) | 2018-12-27 | 2018-12-27 | Lignite inert drying and sorting device and method for power station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811607898.3A CN109458809B (en) | 2018-12-27 | 2018-12-27 | Lignite inert drying and sorting device and method for power station boiler |
Publications (2)
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498546A (en) * | 2009-03-04 | 2009-08-05 | 上海泽玛克敏达机械设备有限公司 | Slewing drum shaped multi-pipe drying mechanism and its use in drying water-containing lignite |
| CN102889608A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite fan mill |
| CN102889607A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke drying lignite coal fan mill |
| CN104359107A (en) * | 2014-11-13 | 2015-02-18 | 上海理工大学 | Superheated steam drying powder making type coal-fired boiler machine unit |
| CN205481081U (en) * | 2016-01-26 | 2016-08-17 | 京隆发电有限责任公司 | Integrated air -look device's flue gas adverse current cylinder drying equipment |
| CA3053976A1 (en) * | 2017-03-03 | 2018-09-07 | Douglas Technical Limited | Apparatus and method for continuously drying bulk goods, in particular wood chips and/or wood fibers comprising a hot gas cyclone |
| CN209310407U (en) * | 2018-12-27 | 2019-08-27 | 西安热工研究院有限公司 | A kind of drying of lignite inertia and sorting unit for station boiler |
-
2018
- 2018-12-27 CN CN201811607898.3A patent/CN109458809B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101498546A (en) * | 2009-03-04 | 2009-08-05 | 上海泽玛克敏达机械设备有限公司 | Slewing drum shaped multi-pipe drying mechanism and its use in drying water-containing lignite |
| CN102889608A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite fan mill |
| CN102889607A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke drying lignite coal fan mill |
| CN104359107A (en) * | 2014-11-13 | 2015-02-18 | 上海理工大学 | Superheated steam drying powder making type coal-fired boiler machine unit |
| CN205481081U (en) * | 2016-01-26 | 2016-08-17 | 京隆发电有限责任公司 | Integrated air -look device's flue gas adverse current cylinder drying equipment |
| CA3053976A1 (en) * | 2017-03-03 | 2018-09-07 | Douglas Technical Limited | Apparatus and method for continuously drying bulk goods, in particular wood chips and/or wood fibers comprising a hot gas cyclone |
| CN209310407U (en) * | 2018-12-27 | 2019-08-27 | 西安热工研究院有限公司 | A kind of drying of lignite inertia and sorting unit for station boiler |
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