CN209588082U - A kind of the ball type pulverizer system using furnace cigarette Single Medium - Google Patents
A kind of the ball type pulverizer system using furnace cigarette Single Medium Download PDFInfo
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- CN209588082U CN209588082U CN201920219330.8U CN201920219330U CN209588082U CN 209588082 U CN209588082 U CN 209588082U CN 201920219330 U CN201920219330 U CN 201920219330U CN 209588082 U CN209588082 U CN 209588082U
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Abstract
The utility model belongs to generating plant pulverized coal boiler pulverized coal preparation system field, specially a kind of the ball type pulverizer system using furnace cigarette Single Medium, including furnace cigarette draw-out device and powder conveying device processed；Furnace cigarette draw-out device include the high temperature for extracting boiler tail flue gas, in mild low-temperature furnace smoke pipeline, the output end in three road stove pipe roads is separately connected the entrance of Single Medium pipeline；The feeder outlet connection coal pulverizer inlet of powder conveying device processed, coal pulverizer inlet connect the outlet of Single Medium pipeline, and coal pulverizer discharge connects tailing separator entrance；Tailing separator gaseous phase outlet connects pulverized-coal collector entrance, the coarse powder outlet connection coal pulverizer inlet after separation；Pulverized-coal collector discharge connects air and powder mixer coal powder entrance, pulverized-coal collector lack of gas outlet connection row powder fan entrance；Exhaust fan exports divide two-way connection air and powder mixer medium inlet and coal pulverizer lack of gas entrance；Air and powder mixer outlet connection wind snout entrance of main burner.
Description
Technical field
The utility model belongs to generating plant pulverized coal boiler pulverized coal preparation system field, specially a kind of using in furnace cigarette Single Medium
Storage formula pulverized coal preparation system.
Background technique
Pulverized coal preparation system is the important component of generating plant pulverized coal boiler combustion system, main function be coal dust preparation and
Conveying, the coal dust of qualified fineness and the wind powder mixture of suitable temperature are provided for boiler.Pulverized-coal fired boiler according to fuel performance not
Together, meager coal anthracite-fired boiler, bituminous coal fired boiler and boiler using brown coal can be divided into, the design of pulverized coal preparation system is carried out according to the difference of coal
Type selecting, usually a kind of pulverized coal preparation system are only applicable to a kind of coal of property.
Conventional intermediate warehouse formula low speed coal mill system is reliable for operation, and coal adaptability is stronger, can both grind smokeless
Coal and meager coal can also grind soft coal, but not be suitable for high-volatile bituminous coal and lignite.The coal that boiler uses once is selected
It is fixed, a kind of coal of property will be may be only available for, single meager coal, anthracite or single bituminous coal cannot be considered in terms of, and make coal in this way
Adaptation range is limited by very large.
The dry pulverized coal preparation system of intermediate warehouse formula whether by hot wind as Single Medium, or utilize furnace cigarette, hot wind
The dry pulverized coal preparation system of intermediate warehouse formula as second medium, or using furnace cigarette, hot wind and lack of gas as in the drying of three media
Between the dry pulverized coal preparation system of warehouse formula, can only adapt to grinding and conveying for meager coal, anthracite or soft coal, cannot take into account.In
Under current coal market variation is complicated and the frequent situation of coal price risk, lignite, meager coal, the price of anthracite and bituminous coal are past
It is past to have larger gap, and fluctuating range is larger, this pulverized coal preparation system for being only applicable to single coal largely affects
The coal-fired buying economy and fuel supply security of power plant.
Utility model content
Aiming at the problems existing in the prior art, the utility model provides a kind of middle storage formula system using furnace cigarette Single Medium
Powder system so that bin storage type pulverizing system can safety and stability grind moisture and volatile content coal in extensive range.
The utility model is to be achieved through the following technical solutions:
A kind of the ball type pulverizer system using furnace cigarette Single Medium, including furnace cigarette draw-out device and powder conveying device processed；
The furnace cigarette draw-out device includes the three road stove pipe roads for extracting boiler tail flue gas, is all the way connection economizer
The high-temperature furnace smoke pipeline of gas approach is all the way the moderate oven smoke pipeline for connecting economizer exit flue, connects air preheater all the way
The low-temperature furnace smoke pipeline of exhaust pass；The output end on three roads stove pipe road is separately connected the entrance of Single Medium pipeline；
The powder conveying device processed includes feeder, coal pulverizer, tailing separator, pulverized-coal collector and row powder fan；
The entrance of the outlet connection coal pulverizer of feeder, the outlet of the entrance connection Single Medium pipeline of coal pulverizer, the coal dust of coal pulverizer
The entrance of outlet connection tailing separator；The entrance of the gaseous phase outlet connection pulverized-coal collector of tailing separator is thick after separation
The entrance of powder outlet connection coal pulverizer；The coal powder entrance of the discharge connection air and powder mixer of pulverized-coal collector, fine powder separation
The entrance of the lack of gas outlet connection row powder fan of device；The outlet of row powder fan is divided into two-way, and the first via connects air and powder mixer and is situated between
Matter entrance, the second tunnel connect the lack of gas entrance of coal pulverizer；Wind snout of the outlet connection main burner of air and powder mixer enters
Mouthful.
It preferably, further include coal bunker, the entrance of the outlet connection feeder of coal bunker, for being feeder coal supply.
Preferably, air-introduced machine and low-temperature furnace smoke air door are disposed on the low-temperature furnace smoke pipeline.
Preferably, it is provided with high-temperature flue gas air door on high-temperature furnace smoke pipeline, moderate oven cigarette is provided on moderate oven smoke pipeline
Air door.
Preferably, furnace cigarette blender door, furnace cigarette mixing cut-off gate are disposed on Single Medium pipeline.
Preferably, it is provided with powder cabin between the discharge and air and powder mixer of pulverized-coal collector, for storing separation
Fine powder.
Compared with prior art, the utility model has technical effect beneficial below:
A kind of the ball type pulverizer system using furnace cigarette Single Medium of the utility model, without increasing system capital equipment
With to existing system carry out under the premise of being transformed on a large scale can safety and stability grind moisture and the extensive coal of volatile content
Kind, boiler and pulverized coal preparation system are improved to the adaptability of coal, are widened the coal-fired buying range of power plant, are improved the operation effect of power plant
Benefit guarantees safety and economy that boiler and pulverized coal preparation system are run when using, preparing different types of coal.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of pulverized coal preparation system described in the utility model.
In figure: 1 is pressure fan, and 2 be air preheater, and 3 be coal bunker, and 4 be feeder, and 5 be coal pulverizer, and 6 separate for coarse powder
Device, 7 be pulverized-coal collector, and 8 be powder cabin, and 9 be row powder fan, and 10 be air and powder mixer, and 11 be OFA burner, and 12 be main burning
Device, 13 be boiler, and 14 be high-temperature flue gas air door, and 15 be moderate oven cigarette air door, and 16 be low-temperature furnace smoke air door, and 17 be furnace cigarette mixing wind
Door, 18 be furnace cigarette mixing cut-off gate, and 19 be air-introduced machine, and 20 be economizer.
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.
A kind of the ball type pulverizer system using furnace cigarette Single Medium of the utility model is a kind of utilization furnace cigarette Single Medium
The dry the ball type pulverizer system for grinding bituminous coal lignite, based on conventional intermediate warehouse formula low speed coal mill, by boiler 13
Tail flue gas directed to coal pulverizer inlet through stove pipe road as dry and ventilation medium, furnace cigarette using coal pulverizer inlet negative pressure
After dry raw coal, pass through air and powder mixer as powder delivery medium after tailing separator 6, pulverized-coal collector 7 and row powder fan 9
10 mixed with coal dust after pulverized coal conveying.The bin storage type pulverizing system of the utility model had been only capable of grinding anthracite and poor originally
On the basis of coal, it is able to satisfy the requirement of high-moisture bituminous coal and lignite to drying capacity and explosion-proof aspect, is greatly broadened powder processed
The coal adaptability of system.
Referring to Fig. 1, a kind of the ball type pulverizer system using furnace cigarette Single Medium of the utility model, including pressure fan 1, it is empty
Air preheater 2, coal bunker 3, feeder 4, coal pulverizer 5, tailing separator 6, pulverized-coal collector 7, powder cabin 8, row powder fan 9, wind powder
Mixer 10, OFA burner 11, main burner 12, boiler 13, high-temperature flue gas air door 14, moderate oven cigarette air door 15, low-temperature furnace smoke
Air door 16, furnace cigarette blender door 17, furnace cigarette mixing cut-off gate 18, air-introduced machine 19, economizer 20；OFA burner 11 is after-flame
Wind combustor.
Wherein, the entrance of the outlet connection air preheater 2 of pressure fan 1, the hot Secondary Air outlet of air preheater 2 are divided into
Two-way connects the hot Secondary Air entrance of main burner 12 all the way, and another way connects the hot Secondary Air entrance of OFA burner 11, point
The tail flue gas of boiler 13 is extracted on three tunnels, is all the way the high-temperature flue gas for connecting 20 gas approach of economizer, saves coal all the way for connection
The moderate oven cigarette of 20 exhaust pass of device is all the way the low-temperature furnace smoke for connecting 19 output end of air-introduced machine, and the input terminal of air-introduced machine 19 connects
It connects 2 exhaust pass of air preheater and is discharged into atmosphere after remaining flue gas desulfurization after output end provides low-temperature furnace smoke；Three road flue gases are equal
Coal pulverizer inlet is connected as dry and explosion-proof medium, coal bunker 3 is used to be 4 coal supply of feeder, and the outlet of feeder 4 connects coal-grinding
The entrance of machine 5.
It is provided with high-temperature flue gas air door 14 on the pipeline of connection 20 gas approach of economizer, is exported in connection economizer 20
It is provided with moderate oven cigarette air door 15 on the pipeline of flue, is provided with low-temperature furnace smoke on the pipeline of connection 19 exhaust pass of air-introduced machine
Air door 16, in the Single Medium pipeline that the collection conduits of high-temperature flue gas, moderate oven cigarette and low-temperature furnace smoke are connect with coal pulverizer inlet
On set gradually furnace cigarette blender door 17 and furnace cigarette mixing cut-off gate 18, the furnace smoke temperature degree for being sent into coal pulverizer 5 can pass through high temperature furnace
Cigarette air door 14, moderate oven cigarette air door 15 and low-temperature furnace smoke air door 16 carry out proportion adjusting, and the air quantity into coal pulverizer 5 can pass through furnace
Cigarette blender door 17 is adjusted, and coal pulverizer 5 can be isolated with boiler 13 by furnace cigarette mixing cut-off gate 18；
The entrance of the discharge connection tailing separator 6 of coal pulverizer 5, the gaseous phase outlet of tailing separator 6 connect fine powder
The entrance of separator 7, the entrance of the coarse powder connection coal pulverizer 5 after separation；The outlet of pulverized-coal collector 7 is divided into lack of gas outlet and coal
Powder outlet, the entrance of the lack of gas outlet connection row powder fan 9 of pulverized-coal collector 7, the lack of gas outlet of row powder fan 9 are divided into two-way,
The first via connects the lack of gas entrance of coal pulverizer 5, and the lack of gas of entrance are as pumped (conveying) medium and form negative pressure and play the role of transport coal dust,
No drying effect, the second tunnel is connected with the powder delivery medium entrance of air and powder mixer 10；The discharge of pulverized-coal collector 7 connects powder
The entrance in storehouse 8, the coal powder entrance of the outlet connection air and powder mixer 10 of powder cabin 8；The outlet of air and powder mixer 10 is connected by pipeline
A wind snout entrance of main burner 12 is connect, powder delivery medium forms the mixing of wind powder after mixing in air and powder mixer 10 with coal dust
Object, wind powder mixture, which is sent into the burner hearth of boiler 13 in main burner 12 by the tissue of a wind snout, to burn.Mill
The entrance of coal machine 5 is coal powder entrance, can be separated with lack of gas entrance or for the same entrance.
Claims (6)
1. a kind of the ball type pulverizer system using furnace cigarette Single Medium, it is characterised in that: including furnace cigarette draw-out device and powder processed
Conveying device；
The furnace cigarette draw-out device includes the three road stove pipe roads for extracting boiler (13) tail flue gas, is all the way connection economizer
(20) high-temperature furnace smoke pipeline of gas approach is all the way the moderate oven smoke pipeline for connecting economizer (20) exhaust pass, connects all the way
Connect the low-temperature furnace smoke pipeline of air preheater (2) exhaust pass；The output end on three roads stove pipe road is separately connected Single Medium pipeline
Entrance；
The powder conveying device processed includes feeder (4), coal pulverizer (5), tailing separator (6), pulverized-coal collector (7) and row
Powder blower (9)；The entrance of the entrance of outlet connection coal pulverizer (5) of feeder (4), coal pulverizer (5) connects Single Medium pipeline
Outlet, coal pulverizer (5) discharge connection tailing separator (6) entrance；The gaseous phase outlet of tailing separator (6) connects
The entrance of pulverized-coal collector (7), the entrance of coarse powder outlet connection coal pulverizer (5) after separation；The coal dust of pulverized-coal collector (7) goes out
The coal powder entrance of mouth connection air and powder mixer (10), the entrance of lack of gas outlet connection row powder fan (9) of pulverized-coal collector (7)；
The outlet of row powder fan (9) is divided into two-way, and the first via connects air and powder mixer (10) medium inlet, and the second tunnel connects coal pulverizer
(5) lack of gas entrance；Wind snout entrance of outlet connection main burner (12) of air and powder mixer (10).
2. a kind of the ball type pulverizer system using furnace cigarette Single Medium according to claim 1, it is characterised in that: also wrap
It includes coal bunker (3), the entrance of outlet connection feeder (4) of coal bunker (3), for being feeder (4) coal supply.
3. a kind of the ball type pulverizer system using furnace cigarette Single Medium according to claim 1, it is characterised in that: described
Low-temperature furnace smoke pipeline on be disposed with air-introduced machine (19) and low-temperature furnace smoke air door (16).
4. a kind of the ball type pulverizer system using furnace cigarette Single Medium according to claim 1, it is characterised in that: high temperature
It is provided on stove pipe road high-temperature flue gas air door (14), moderate oven cigarette air door (15) is provided on moderate oven smoke pipeline.
5. a kind of the ball type pulverizer system using furnace cigarette Single Medium according to claim 1, it is characterised in that: single
Furnace cigarette blender door (17), furnace cigarette mixing cut-off gate (18) are disposed on medium pipeline.
6. a kind of the ball type pulverizer system using furnace cigarette Single Medium according to claim 1, it is characterised in that: fine powder
Powder cabin (8) are provided between the discharge and air and powder mixer (10) of separator (7), for storing isolated fine powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920219330.8U CN209588082U (en) | 2019-02-20 | 2019-02-20 | A kind of the ball type pulverizer system using furnace cigarette Single Medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920219330.8U CN209588082U (en) | 2019-02-20 | 2019-02-20 | A kind of the ball type pulverizer system using furnace cigarette Single Medium |
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| CN209588082U true CN209588082U (en) | 2019-11-05 |
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| CN201920219330.8U Active CN209588082U (en) | 2019-02-20 | 2019-02-20 | A kind of the ball type pulverizer system using furnace cigarette Single Medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654524A (en) * | 2019-02-20 | 2019-04-19 | 西安西热锅炉环保工程有限公司 | It is a kind of using furnace cigarette as the bin storage type pulverizing system of Single Medium and method |
| CN111256107A (en) * | 2020-03-31 | 2020-06-09 | 国电南京电力试验研究有限公司 | Explosion-proof system for grinding high-volatile coal by double-inlet and double-outlet coal mill and working method |
-
2019
- 2019-02-20 CN CN201920219330.8U patent/CN209588082U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109654524A (en) * | 2019-02-20 | 2019-04-19 | 西安西热锅炉环保工程有限公司 | It is a kind of using furnace cigarette as the bin storage type pulverizing system of Single Medium and method |
| CN111256107A (en) * | 2020-03-31 | 2020-06-09 | 国电南京电力试验研究有限公司 | Explosion-proof system for grinding high-volatile coal by double-inlet and double-outlet coal mill and working method |
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