CN209310407U - A kind of drying of lignite inertia and sorting unit for station boiler - Google Patents
A kind of drying of lignite inertia and sorting unit for station boiler Download PDFInfo
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- CN209310407U CN209310407U CN201822210632.7U CN201822210632U CN209310407U CN 209310407 U CN209310407 U CN 209310407U CN 201822210632 U CN201822210632 U CN 201822210632U CN 209310407 U CN209310407 U CN 209310407U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model relates to brown coal drying and upgrading technical fields, specially a kind of drying of lignite inertia and sorting unit 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 utility model relates to brown coal drying and upgrading technical field, specially a kind of lignite inertia for station boiler is dry
Dry and sorting unit.
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.
Utility model content
Aiming at the problems existing in the prior art, the utility model provide it is a kind of design rationally, simple process, system safety
Property it is high, lignite inertia drying for station boiler and the sorting unit of lignite utilization rate can be effectively improved.
The utility model 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.
Compared with prior art, the utility model has technical effect beneficial below:
The feature that the utility model is low by the furnace cigarette oxygen content using station boiler, temperature is high carries out lignite lazy
Property dry and sorting, the thin lignite for being not easy to secondary use is sent to the boiler for combustion utilizations, is carried out after remaining thick lignite collection
Secondary use effectively improves lignite utilization rate, and the lignite quality filtered out is high；Meanwhile whole system is in inertia flue gas ring
In border, lignite and its volatile matter spontaneous combustion is effectively prevent to explode, and drying carries part lignite with high-temperature flue gas and comes back to furnace
In thorax, equivalent to increase flue gas recirculation, boiler economics are influenced smaller；Moreover, introducing fan using by low-temperature furnace smoke
Blower mill entrance furnace smoke temperature degree can be effectively reduced in the mode of coal pulverizer inlet, protect blower mill blade,
Brown-coal burner by being arranged in the inside of OFA burner by the utility model, height needed for meeting lignite burning
Mild oxygen, and OFA burner is located at the main burner the top of boiler furnace, lignite burning does not influence boiler original burner again
Burning.
Cant timber is arranged by rotating inner walls in drying device in the utility model, and lignite is rotated with drying device,
Cant timber 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
Downstream under device.
The utility model by the way that conveyor belt is arranged inside collection device, can will screening collect the thick lignite of high-quality and
When send out collection device, carry out secondary use.
The utility model can be cooled down effectively brown in collection device in such a way that low-temperature furnace smoke is introduced collection device outlet
Coal prevents lignite from meeting air spontaneous combustion in collection device exit, further increases the security reliability of system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the utility model embodiment.
Fig. 2 is that inertia is dry in the utility model 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
The utility model is described in further detail below with reference to specific embodiment, described is to the utility model
Explanation rather than limit.
Embodiment 1
A kind of lignite inertia for station boiler of the utility model is dry and sorting unit wraps as depicted in figs. 1 and 2
Include inertia drying and sorting 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 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.
Claims (5)
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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822210632.7U CN209310407U (en) | 2018-12-27 | 2018-12-27 | A kind of drying of lignite inertia and sorting unit for station boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822210632.7U CN209310407U (en) | 2018-12-27 | 2018-12-27 | A kind of drying of lignite inertia and sorting unit for station boiler |
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| Publication Number | Publication Date |
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| CN209310407U true CN209310407U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822210632.7U Active CN209310407U (en) | 2018-12-27 | 2018-12-27 | A kind of drying of lignite inertia and sorting unit for station boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458809A (en) * | 2018-12-27 | 2019-03-12 | 西安热工研究院有限公司 | A kind of drying of lignite inertia and sorting unit and method for station boiler |
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2018
- 2018-12-27 CN CN201822210632.7U patent/CN209310407U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458809A (en) * | 2018-12-27 | 2019-03-12 | 西安热工研究院有限公司 | A kind of drying of lignite inertia and sorting unit and method for station boiler |
| CN109458809B (en) * | 2018-12-27 | 2024-01-23 | 西安热工研究院有限公司 | Lignite inert drying and sorting device and method for power station boiler |
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