CN208253645U - Biomass couples pulverized coal combustion system - Google Patents
Biomass couples pulverized coal combustion system Download PDFInfo
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- CN208253645U CN208253645U CN201820399792.8U CN201820399792U CN208253645U CN 208253645 U CN208253645 U CN 208253645U CN 201820399792 U CN201820399792 U CN 201820399792U CN 208253645 U CN208253645 U CN 208253645U
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Abstract
The utility model discloses a kind of biomass coupling pulverized coal combustion system, including coal burner, roots blower, igniter fuel storage tank and main fuel storage tank, roots blower is connect by igniter fuel conveying pipeline with the igniter fuel interface on coal burner, igniter fuel storage tank accesses in igniter fuel conveying pipeline, roots blower also passes through main fuel conveying pipeline and connect with the main fuel interface on coal burner, and main fuel storage tank accesses main fuel conveying pipeline；The periphery of coal burner is equipped with intermediate frequency heater and thermocouple.Biomass coupling pulverized coal combustion system and its control method in the utility model, can under the conditions of black furnace direct firing coal-dust burner, allow to use colm, biomass or biomass mixed coal powder as fuel, operating cost is low, safe and reliable.
Description
Technical field
The utility model relates to coal powder burning technology fields, couple pulverized coal combustion system more particularly to a kind of biomass.
Background technique
Existing pulverized coal combustion system, the overwhelming majority cannot under the conditions of black furnace direct firing coal-dust burner, need according to
Production run is carried out with means such as burnings by oil gun preheating burner hearth, auxiliary fuel.Using diesel oil or other oil products as fuel preheating
The pulverized coal combustion system of burner hearth has the following disadvantages: the dark smoke that oil plant imperfect combustion generates when (1) lighting a fire directly is arranged
To atmosphere, environment is seriously polluted；(2) make fuel ignition and heating furnace, operating cost height, deficiency in economic performance with oil product；(3) it uses
Oil product makees the auxiliary equipment such as fuel requirement oil storage tank, oil pipe, and there are security risks.
There is a kind of technology that plasma-arc directly lights coal dust in boiler furnace, but this technology is currently not very
Maturation can only use super sea coal as fuel, not be available colm or biomass fuel.Plasma-arc is directly by burner hearth
Because its " electrode " material is Kufil, general continuous use will be replaced the technology that interior coal dust is lighted for two hours, be unable to satisfy
Quantity-produced demand, and the cost used is very high.
Utility model content
The purpose of the utility model is to provide a kind of biomass to couple pulverized coal combustion system, is deposited with solving the above-mentioned prior art
The problem of, can be allowed with firing coal-dust burner direct under the conditions of black furnace using colm, biomass or biomass Mixture Density Networks
For powder as fuel, operating cost is low, safe and reliable.
To achieve the above object, the utility model provides following scheme: the utility model provides a kind of biomass coupling
Pulverized coal combustion system, including coal burner, roots blower, igniter fuel storage tank and main fuel storage tank, Roots's wind
Machine is connect by igniter fuel conveying pipeline with the igniter fuel interface on the coal burner, and the igniter fuel storage tank connects
Enter in the igniter fuel conveying pipeline, the roots blower also passes through the main combustion on main fuel conveying pipeline and the coal burner
Expect interface connection, the main fuel storage tank accesses the main fuel conveying pipeline；During the periphery of the coal burner is equipped with
Frequency heater and thermocouple.
Optionally, the igniter fuel storage tank is connect by igniter fuel feeding controller and igniter fuel feeding stop valve
Enter the igniter fuel conveying pipeline.
Optionally, igniter fuel feeding wind regulating valve, igniter fuel feeding are also equipped on the igniter fuel conveying pipeline
Distinguished and admirable meter and igniter fuel stop valve.
Optionally, the main fuel storage tank passes through described in main fuel feeding controller and the access of main fuel feeding stop valve
Main fuel conveying pipeline.
Optionally, main fuel air-supply regulating valve, main fuel feeding wind flowmeter are also equipped on the main fuel conveying pipeline
With main fuel stop valve.
It optionally, further include having air blower, the air blower passes through combustion-supporting air piping and helping on the coal burner
The connection of wind interface is fired, is also equipped with combustion air regulating valve in the combustion-supporting air piping.
Optionally, the air blower also passes through cooling wind pipeline and connect with the cooling wind interface on the coal burner,
Cooling wind regulating valve is also equipped on the cooling wind pipeline.
The utility model achieves following technical effect compared with the existing technology:
Biomass in the utility model couples pulverized coal combustion system, in coal burner periphery installation intermediate frequency heater and
Thermocouple, thermocouple are used to detect the temperature inside coal burner, and intermediate frequency heater starting speed is fast, heating power is big, can
To ensure that coal burner, can be with reliable ignition when using colm, biomass fuel；It can direct point under the conditions of black furnace
Burning coal power combustor allows to use colm, biomass or biomass mixed coal powder as fuel, operating cost is low, safety can
It leans on.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the overall structure diagram that the utility model biomass couples pulverized coal combustion system；
Fig. 2 is the structural schematic diagram of coal burner in the utility model；
Fig. 3 is the control flow of pulverized coal combustion system；
Wherein, 1 roots blower, 2 igniter fuel conveying pipelines, 3 igniter fuel feeding wind regulating valves, 4 igniter fuel feeding winds
Flowmeter, 5 igniter fuel storage tanks, 6 igniter fuel feeding controllers, 7 igniter fuel feeding stop valves, the cutting of 8 igniter fuels
Valve, 9 coal burners, 10 main fuel conveying pipelines, 11 main fuel feeding wind regulating valves, 12 main fuel feeding wind flowmeters, 13 is main
Fuel storage tank, 14 main fuel feeding controllers, 15 main fuel feeding stop valves, 16 main fuel stop valves, 17 air blowers, 18 help
Combustion air piping, 19 cooling wind pipelines, 20 combustion air regulating valves, 21 cooling wind regulating valves, 22 igniter fuel interfaces, 23 main fuels connect
Mouthful, 24 cooling wind interfaces, 25 combustion air interfaces, 26 intermediate frequency heaters, 27 thermocouples.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of biomass to couple pulverized coal combustion system, is deposited with solving the above-mentioned prior art
The problem of, can be allowed with firing coal-dust burner direct under the conditions of black furnace using colm, biomass or biomass Mixture Density Networks
For powder as fuel, operating cost is low, safe and reliable.
Biomass provided by the utility model couples pulverized coal combustion system, including coal burner, roots blower, igniting combustion
Expect that storage tank and main fuel storage tank, roots blower pass through the igniter fuel interface on igniter fuel conveying pipeline and coal burner
Connection, igniter fuel storage tank access in igniter fuel conveying pipeline, and roots blower also passes through main fuel conveying pipeline and coal dust firing
Main fuel interface connection on device, main fuel storage tank access main fuel conveying pipeline；The periphery of coal burner is equipped with intermediate frequency
Heater and thermocouple.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Please refer to Fig. 1-3, wherein Fig. 1 is the overall structure signal that the utility model biomass couples pulverized coal combustion system
Figure；Fig. 2 is the structural schematic diagram of coal burner in the utility model；Fig. 3 is the control flow of pulverized coal combustion system.
As shown in Figure 1-3, the utility model provides a kind of biomass coupling pulverized coal combustion system, including roots blower 1, point
Fiery fuel conveying pipeline 2, igniter fuel feeding wind regulating valve 3, igniter fuel feeding wind flowmeter 4, igniter fuel storage tank 5, point
Fiery fuel feeding controller 6, igniter fuel feeding stop valve 7, igniter fuel stop valve 8, coal burner 9, main fuel conveying
Pipe 10, main fuel feeding wind regulating valve 11, main fuel feeding wind flowmeter 12, main fuel storage tank 13, main fuel feeding control
Device 14, main fuel stop valve 16, air blower 17, combustion-supporting air piping 18, cooling wind pipeline 19, helps main fuel feeding stop valve 15
Fire wind regulating valve 20, cooling wind regulating valve 21.
Roots blower 1 is connect by igniter fuel conveying pipeline 2 with the igniter fuel interface 22 on coal burner 9.Igniting
Fuel storage tank 5 accesses igniter fuel conveying pipeline 2 by igniter fuel feeding controller 6 and igniter fuel feeding stop valve 7.Point
Igniter fuel feeding wind regulating valve 3, igniter fuel feeding wind flowmeter 4 and igniter fuel are also equipped on fiery fuel conveying pipeline 2
Stop valve 8.Igniter fuel feeding controller 6 is used to adjust the size of feeding amount；Igniter fuel feeding stop valve 7 for quickly,
Reliable cutting coal dust feeding；Igniter fuel feeding wind regulating valve 3 is for adjusting feeding wind flow；Igniter fuel feeding wind flowmeter
4 for detecting feeding wind flow；Igniter fuel stop valve 8 for quickly, reliably cut off igniter fuel.
Meanwhile roots blower 1 is also connect by main fuel conveying pipeline 10 with the main fuel interface 23 on coal burner 9.
Main fuel storage tank 13 accesses main fuel conveying pipeline 10 by main fuel feeding controller 14, main fuel feeding stop valve 15.It is main
Main fuel feeding wind regulating valve 11, main fuel feeding wind flowmeter 12, main fuel stop valve are also equipped on fuel conveying pipeline 10
16.Main fuel feeding controller 14 is used to adjust the size of feeding amount；Main fuel feeding stop valve 15 is for quickly, reliably cutting off
Coal dust feeding；Main fuel feeding wind regulating valve 11 is for adjusting feeding wind flow；Main fuel feeding wind flowmeter 12 is for detecting
Feeding wind flow；Main fuel stop valve 16 for quickly, reliably cut off main fuel.
Air blower 17 is connect by combustion-supporting air piping 18 with the combustion air interface 25 on coal burner 9.Combustion-supporting air piping
Combustion air regulating valve 20 is also equipped on 18.Combustion air regulating valve 20 is for adjusting the combustion-supporting wind flow of main burner.
Meanwhile air blower 17 is also connect by cooling wind pipeline 19 with the cooling wind interface 24 on coal burner 9.It is cooling
Cooling wind regulating valve 21 is also equipped in air piping 19.Cooling wind regulating valve 21 is for adjusting start-up burner cooling airflow amount.
As shown in Fig. 2, coal burner 9 includes: igniter fuel interface 22, main fuel interface 23, cooling wind interface 24, helps
Fire wind interface 25, intermediate frequency heater 26, thermocouple 27.Setting igniting fuel interface 22, main fuel interface on coal burner 9
23, cooling wind interface 24, combustion air interface 25, respectively with igniter fuel conveying pipeline 2, main fuel conveying pipeline 10, cooling wind pipeline
19, combustion-supporting air piping 18 connects.9 periphery installation intermediate frequency heater 26 of coal burner, in startup stage heating coal dust combustion
Burner 9 and the material entered.Thermocouple 27 is installed, for detecting the temperature inside coal burner 9 on coal burner 9.
Control method applied to above-mentioned biomass coupling pulverized coal combustion system, comprising the following steps: biomass couples coal
Before the igniting of powder combustion system, by roots blower 1, the starting operation of air blower 17, coal dust firing first is preheated using intermediate frequency heater 26
Device 9 detects temperature using thermocouple 27；Reach firing temperature when coal burner 9 is preheating to 700 DEG C~900 DEG C, starts to throw
Enter igniter fuel.
When igniter fuel storage tank 5 conveys fuel to coal burner 9, igniter fuel feeding controller 6, igniting are opened
Fuel feeding stop valve 7.The control conveying doses of igniter fuel feeding controller 6 is fixed value 5kg/min~10kg/min, is not required to
Speed regulation.According to combustion position, cooling wind regulating valve 21 is adjusted, keeps cooling air quantity appropriate；Cooling wind is also that igniter fuel helps simultaneously
Fire wind.
After igniter works normally 30s~120s, stop intermediate frequency heater 26, according to boiler heating curve, to put into
Main fuel.When main fuel storage tank 13 conveys fuel to coal burner 9, main fuel feeding controller 14, main fuel are opened
Feeding stop valve 15；By adjusting 14 frequency size of main fuel feeding controller, to adjust delivery of main fuel flow and coal dust combustion
The power output of burner 9.According to combustion position, combustion air regulating valve 20 is adjusted, keeps main fuel combustion air volume appropriate.
In the operation of coal burner 9, if thermocouple 27 detects temperature and is lower than 750 DEG C, intermediate frequency heater should be restarted
26 heating stop intermediate frequency heater 26 when thermocouple 27 detects when temperature is higher than 850 DEG C.
Fig. 3 shows the process that the control method of pulverized coal combustion system is coupled according to the biomass of the utility model embodiment
Figure.
When coal burner 9 normally stops working, it is initially switched off main fuel feeding controller 14, main fuel feeding stop valve
15, purge main fuel conveying pipeline 10, purge time 3min~5min；Igniter fuel feeding controller 6 is cut off again, igniter fuel is sent
Expect stop valve 7, purges igniter fuel conveying pipeline 2, while cooling coal burner 9, purging, 3min~5min cooling time；Most
Roots blower 1, air blower 17 are closed afterwards.
When the work of 9 emergent stopping of coal burner, while cutting off main fuel feeding controller 14, main fuel feeding cutting
Valve 15, main fuel stop valve 16, igniter fuel feeding controller 6, igniter fuel feeding stop valve 7, igniter fuel stop valve 8,
Close roots blower 1, cooling coal burner 9, cooling time 3min~5min；Finally close air blower 17.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. a kind of biomass couples pulverized coal combustion system, it is characterised in that: including coal burner, roots blower, igniter fuel
Storage tank and main fuel storage tank, the roots blower are fired by the igniting on igniter fuel conveying pipeline and the coal burner
Expect interface connection, the igniter fuel storage tank accesses in the igniter fuel conveying pipeline, and the roots blower also passes through main combustion
Material conveying pipeline is connect with the main fuel interface on the coal burner, and the main fuel storage tank accesses the main fuel conveying
Pipe；The periphery of the coal burner is equipped with intermediate frequency heater and thermocouple.
2. biomass according to claim 1 couples pulverized coal combustion system, it is characterised in that: the igniter fuel storage tank
The igniter fuel conveying pipeline is accessed by igniter fuel feeding controller and igniter fuel feeding stop valve.
3. biomass according to claim 1 couples pulverized coal combustion system, it is characterised in that: the igniter fuel conveying pipeline
On be also equipped with igniter fuel feeding wind regulating valve, igniter fuel feeding wind flowmeter and igniter fuel stop valve.
4. biomass according to claim 1 couples pulverized coal combustion system, it is characterised in that: the main fuel storage tank is logical
It crosses main fuel feeding controller and main fuel feeding stop valve accesses the main fuel conveying pipeline.
5. biomass according to claim 1 couples pulverized coal combustion system, it is characterised in that: on the main fuel conveying pipeline
It is also equipped with main fuel air-supply regulating valve, main fuel feeding wind flowmeter and main fuel stop valve.
6. biomass according to claim 1 couples pulverized coal combustion system, it is characterised in that: it further include having air blower, institute
It states air blower and is connect by combustion-supporting air piping with the combustion air interface on the coal burner, also pacified in the combustion-supporting air piping
Equipped with combustion air regulating valve.
7. biomass according to claim 6 couples pulverized coal combustion system, it is characterised in that: the air blower also passes through cold
But air piping is connect with the cooling wind interface on the coal burner, and cooling wind adjusting is also equipped on the cooling wind pipeline
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820399792.8U CN208253645U (en) | 2018-03-23 | 2018-03-23 | Biomass couples pulverized coal combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820399792.8U CN208253645U (en) | 2018-03-23 | 2018-03-23 | Biomass couples pulverized coal combustion system |
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| Publication Number | Publication Date |
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| CN208253645U true CN208253645U (en) | 2018-12-18 |
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| CN201820399792.8U Active CN208253645U (en) | 2018-03-23 | 2018-03-23 | Biomass couples pulverized coal combustion system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253447A (en) * | 2018-03-23 | 2018-07-06 | 山西文龙中美环能科技股份有限公司 | Biomass couples pulverized coal combustion system and its control method |
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2018
- 2018-03-23 CN CN201820399792.8U patent/CN208253645U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253447A (en) * | 2018-03-23 | 2018-07-06 | 山西文龙中美环能科技股份有限公司 | Biomass couples pulverized coal combustion system and its control method |
| CN108253447B (en) * | 2018-03-23 | 2023-10-20 | 山西文龙中美环能科技股份有限公司 | Biomass coupling pulverized coal combustion system and control method thereof |
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