CN109654527A - A kind of three-waste mixed fired boiler uniform coal feeding device - Google Patents
A kind of three-waste mixed fired boiler uniform coal feeding device Download PDFInfo
- Publication number
- CN109654527A CN109654527A CN201811506085.5A CN201811506085A CN109654527A CN 109654527 A CN109654527 A CN 109654527A CN 201811506085 A CN201811506085 A CN 201811506085A CN 109654527 A CN109654527 A CN 109654527A
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- Prior art keywords
- coal
- feeding device
- combustion furnace
- mixed combustion
- coal feeding
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- 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
- F23K3/16—Over-feed arrangements
- F23K3/18—Spreader stokers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/005—Regulating fuel supply using electrical or electromechanical means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
本发明公开了一种三废混燃炉生产中给煤装置,包括有混燃炉和给煤机，由所述给煤机将煤料输送到混燃炉中，其特征在于：在所述混燃炉的左侧设置有两个给煤口，同时在所述混燃炉的右侧也设置有两个给煤口，每个所述给煤口上均连接有给煤机，所述给煤口的高度高于混燃炉的水平中心点高度；通过在混燃炉的两侧均设置有给煤机，将生产中不易送达燃煤区域均匀给煤，从而达到给煤均匀，促使炉膛温度易控，操作简便，稳定生产。
The invention discloses a coal feeding device in the production of a three-waste mixed combustion furnace, comprising a mixed combustion furnace and a coal feeder, and the coal feeder transports coal into the mixed combustion furnace, and is characterized in that: in the mixed combustion furnace There are two coal feed ports on the left side of the burner, and two coal feed ports are also provided on the right side of the co-firing furnace. Each coal feed port is connected with a coal feeder. The height of the mouth is higher than the height of the horizontal center point of the co-firing furnace; by setting the coal feeder on both sides of the co-firing furnace, the coal is evenly fed to the coal-burning area that is not easy to reach in production, so as to achieve uniform coal feeding and promote the furnace chamber. The temperature is easy to control, the operation is simple, and the production is stable.
Description
Technical field
The present invention relates to uniform in three-waste mixed fired boiler process equipment technical field more particularly to a kind of production of three-waste mixed fired boiler
Coal feeder.
Background technique
In recent years, due to the raising of people's life Happiness Index, higher, chemical industry enterprise is required ecological environmental protection
Industry Environmental Protection Situation is severe, and exhaust gas, the waste residue etc. that chemical company generates prevent random discharge, to carry out to exhaust gas, waste residue of generation etc.
Secondary use turns waste into wealth.Simultaneously because domestic three-waste mixed fired boiler technology reaches its maturity, and in recent years each chemical company it is new on
The many intermediate items of horse.
In three-waste mixed fired boiler production, combustion furnace furnace diameter mostly uses Φ 5400mm, is required according to my company's condition of production
It is designed as Φ 6000mm;500mm partition wall is built among burner hearth together, 1#, 2#, 3#, 4# coal feeding hole are in combustion furnace burner hearth when original designs
Coal height 1300mm is given in side, and in actual moving process, coal is thrown into burner hearth under wind effect of delivering coal, in the gas of blast cap blowout
Under stream effect, part coal is run to burner hearth coal feeding hole opposite, since burner hearth is big, when coal arrives the coal feeding hole other side under fluidized state
Due to time and combustion reason, cause coal feeding hole other side temperature low, the working of a furnace is difficult to control, will cause combustion furnace and partly or entirely puts out
Fire, operating difficulties.
Also, existing three wastes furnace is spherical hearth, and double-wind chamber cloth wind mode, it is all that four screw-type coal distributors are distributed in combustion furnace
It encloses, every screw-type coal distributor matches a set of flat belt coal supply system.Screw-type coal distributor uses motor driven, and centre is connected with copy wheel
It connects, coal is pushed and burnt into combustion furnace by bearing support, continuous running by screw-type coal distributor body part.Due to screw-type coal distributor
Sleeve uses totally enclosed type, bonds and accumulates in sleeve inner to coal, increases spiral to the abrasion of coal auger and to coal resistance, especially
, in coal tide and doping colm and clinker, situation is more serious for it, brings hidden danger to screw-type coal distributor safe operation.It is every at present
The service life of platform screw-type coal distributor is about 2 months, and when each screw-type coal distributor auger breaks, corresponding points temperature is difficult to be maintained,
Load could must be maintained to coal manually in time, therefore the careless slightly temperature that is possible to cause the to collapse furnace that goes out solves this kind of ask
Topic is particularly important.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of three-waste mixed fired boiler uniform coal feeding devices, by the two of mixed combustion furnace
Side is provided with feeder, will be not easy to be sent to coal-fired region in production and spares to coal, to reach uniform to coal, promotes burner hearth temperature
Spend easily-controllable, easy to operate, steady production.
To solve the above problems, including mixed combustion furnace the present invention provides coal feeder in a kind of production of three-waste mixed fired boiler
And feeder, coal charge is transported in mixed combustion furnace by the feeder, it is characterised in that: be provided on the left of the mixed combustion furnace
Two coal feeding holes, while being also provided on the right side of the mixed combustion furnace there are two coal feeding hole, it is respectively connected on each coal feeding hole
Feeder, the height of the coal feeding hole are higher than the horizontal centre point height of mixed combustion furnace.
Further improvement lies in that: it is placed according to site requirements the position of the feeder.
Further improvement lies in that: the feeder includes motor and auger, drives auger operation by the motor, described
It is coated with closed sleeve on the outside of auger, is provided with coal bunker above the sleeve.
Further improvement lies in that: it is provided with humidity sensor in the coal bunker, is arranged in the sleeve every a distance
There is electromagnetic pneumatic blowing valve, the humidity sensor and the electromagnetic pneumatic blowing valve are both connected in PLC controller.
Further improvement lies in that: the gas source of the electromagnetic pneumatic blowing valve is supplied by instrument air, and pressure is in 0.4-
0.8MPa。
Further improvement lies in that: the electromagnetic pneumatic blowing valve include there are three types of operating mode, respectively low frequency mode, in
Frequency mode and high frequency mode.
Further improvement lies in that: under the low frequency mode, it is blown time interval 100s, is blown time 0.3s every time, by
Yellow indicator lamp instruction.
Further improvement lies in that: under the intermediate frequency mode, it is blown time interval 50s, time 0.5s is blown every time, by green
The instruction of color indicator light.
Further improvement lies in that: under high frequency mode, it is blown time interval 20s, time 0.8s is blown every time, is referred to by red
Show that lamp indicates.
The beneficial effects of the present invention are: the present invention is provided with feeder by the two sides in mixed combustion furnace, make fire coal by mixing
One side of burner burner hearth, which fluidizes to deliver coal into burner hearth, becomes Multipoint Uniform fluidisation transmission fire coal, so that coal-fired layout is more reasonable, it is coal-fired
Reaching burner hearth, the time is short everywhere, and temperature is easier to control everywhere, and simpler in operation, regulating measure is more, considerably beyond other equipment
Runing time, equipment are able to continuous long-term operation, are summarized as having the advantage that
1, after present invention transformation, using 4 points to coal, uniform to coal point, under wind effect of delivering coal, fire coal is shed position and is increased, and falls
Point is more reasonable, and fire coal reaches burner hearth each point and participates in burning time shortening；Temperature is more uniform in burner hearth, reduces operation difficulty；
2, the case where improving equipment operation stability, avoiding coking, cutoff generation；
3, labor intensity is reduced, production cost is saved.
4, the present invention has the function of automatic block clearing, and the frequent chute blockage of auger is contained from source, and serious wear, service life are short, with
And the problems such as feeder is big to coal abnormal sound, and motor high loaded process is generated heat.
Detailed description of the invention
Fig. 1 is main view of the invention.
Fig. 2 is top view of the invention.
Fig. 3 is the structure chart of feeder of the invention.
Wherein: 1- mixed combustion furnace, 2- feeder, 3- coal feeding hole, 4- motor, 5- auger, 6- sleeve, 7- coal bunker, 8- humidity pass
Sensor, 9- electromagnetic pneumatic blowing valve.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is further described below in conjunction with embodiment, the present embodiment
For explaining only the invention, it is not intended to limit the scope of the present invention..
Embodiment one
As shown in Figure 1, 2, a kind of three-waste mixed fired boiler uniform coal feeding device is present embodiments provided, includes mixed combustion furnace 1 and to coal
Coal charge is transported in mixed combustion furnace 1 by machine 2 by the feeder 2, is arranged in the left side of the mixed combustion furnace 1 there are two coal feeding hole 3,
It is also provided on the right side of the mixed combustion furnace simultaneously there are two coal feeding hole 3, is respectively connected with feeder 2, institute on each coal feeding hole 3
The height for stating coal feeding hole 3 is higher than the horizontal centre point height of mixed combustion furnace 1.The height of coal feeding hole is 1900mm, combustion in the present embodiment
The diameter for burning furnace burner hearth is Φ 6000mm.
In three-waste mixed fired boiler production, fire coal is uniformly shed into burner hearth, under 780-800 DEG C of high temperature furnace slag heat effect
It burns, temperature is at 970 ± 20 DEG C in burner hearth, and the high-temperature flue gas of generation is discharged under the action of air-introduced machine to back segment, in discharge
Heat exchange is carried out with demineralized water in water screen tube in the process, to achieve the purpose that generate steam.
It is provided with feeder by the two sides in mixed combustion furnace, using 4 points to coal, makes fire coal by mixed combustion furnace burner hearth side
Into burner hearth, fluidisation, which is delivered coal, becomes Multipoint Uniform fluidisation transmission fire coal, so that coal-fired layout is more reasonable, fire coal reaches burner hearth everywhere
Time is short, and temperature is easier to control everywhere, and simpler in operation, regulating measure is more, considerably beyond other equipment runing time, equipment
It is able to continuous long-term operation.
Embodiment two
As shown in figure 3, the feeder 2 includes motor 4 and auger 5, auger 5 is driven to run by the motor 4, the auger
5 outside is coated with closed sleeve 6, is provided with coal bunker 7 above the sleeve 6.Humidity sensor is provided in the coal bunker 7
Device 8, the sleeve 6 is interior to be provided with electromagnetic pneumatic blowing valve 9, the motor 4, humidity sensor 8 and electromagnetism every 400mm distance
Pneumatic blowing valve 9 is both connected in PLC controller.The gas source of the electromagnetic pneumatic blowing valve 9 is supplied by instrument air, and is pressed
Power is in 0.6MPa.The electromagnetic pneumatic blowing valve 9 includes that there are three types of operating modes, respectively low frequency mode, intermediate frequency mode and height
Frequency mode.Under the low frequency mode, it is blown time interval 100s, time 0.3s is blown every time, is indicated by yellow indicator lamp.?
Under the intermediate frequency mode, it is blown time interval 50s, time 0.5s is blown every time, is indicated by green indicator light.In high frequency mode
Under, it is blown time interval 20s, time 0.8s is blown every time, is indicated by red indicating light.
The present invention has the function of automatic block clearing, and the frequent chute blockage of auger is contained from source, and serious wear, service life are short, and
The problems such as feeder is big to coal abnormal sound, and motor high loaded process is generated heat.
According to current three wastes furnace operating condition and coal-fired analysis report, moisture 10% or so, screw-type coal distributor electric current 7.0A is left
It is right.When moisture is less than 8% or electric current is less than 6.5A, DSC control system automatically switches to low frequency operating mode；When moisture is in 8%-
12% or electric current be 6.5A-7.5A when, control system automatically switches to intermediate frequency operating mode；When moisture is greater than 12% or electric current is greater than
When 7.5A, control system automatically switches to high-frequency work mode.
Every the suitable for reading of screw auger is fitted with three electromagnetic pneumatic blowing valves 9, is respectively connected to DCS control system, often
4 electric current of motor of platform auger 5 equally accesses, while the humidity sensor 8 of coal bunker is connected to the PLC control of DCS control system simultaneously
Device processed；The blowing frequency is opened according to the height of electric current when control system detects the variation of auger electric current, is blown the height of the frequency
It is low to carry out dynamic adjustment also according to the data of auger current of electric and the humidity sensor of coal bunker, to keep automatic blow out system
Accomplish energy-efficient；Realization device of the present invention gives coal efficient blockage clearing, substantially prolongs the service life of coal feeder, eliminates tide
Coal blocking auger causes equipment damage and disconnected the coal temperature that collapses to go out the Influence of production of furnace.Boiler operating efficiency is improved, maintenance and behaviour are mitigated
The workload of work.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506085.5A CN109654527B (en) | 2018-12-10 | 2018-12-10 | Uniform coal feeding device of three-waste mixed combustion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811506085.5A CN109654527B (en) | 2018-12-10 | 2018-12-10 | Uniform coal feeding device of three-waste mixed combustion furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109654527A true CN109654527A (en) | 2019-04-19 |
| CN109654527B CN109654527B (en) | 2020-05-05 |
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ID=66113828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811506085.5A Active CN109654527B (en) | 2018-12-10 | 2018-12-10 | Uniform coal feeding device of three-waste mixed combustion furnace |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0370144A1 (en) * | 1987-09-03 | 1990-05-30 | Kawasaki Jukogyo Kabushiki Kaisha | Coal-moisture control process |
| CN201808842U (en) * | 2010-09-14 | 2011-04-27 | 新会双水发电(B厂)有限公司 | Coal bucket coal injection device |
| KR20120018466A (en) * | 2010-08-23 | 2012-03-05 | 한국에너지기술연구원 | Feed equipment of low rank coal with high moisture |
| CN102901090A (en) * | 2011-07-26 | 2013-01-30 | 中国科学院工程热物理研究所 | Large circulating fluidized bed boiler having cyclone separators |
| CN202880189U (en) * | 2012-11-14 | 2013-04-17 | 张金才 | Vertical single rotary raw coal bunker dredging device |
| CN205820280U (en) * | 2016-06-29 | 2016-12-21 | 陈玉 | A kind of feeder |
| CN207214030U (en) * | 2017-09-20 | 2018-04-10 | 东方电气集团东方锅炉股份有限公司 | A kind of coal supply system for using low calorie fuels CFBB |
-
2018
- 2018-12-10 CN CN201811506085.5A patent/CN109654527B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0370144A1 (en) * | 1987-09-03 | 1990-05-30 | Kawasaki Jukogyo Kabushiki Kaisha | Coal-moisture control process |
| KR20120018466A (en) * | 2010-08-23 | 2012-03-05 | 한국에너지기술연구원 | Feed equipment of low rank coal with high moisture |
| CN201808842U (en) * | 2010-09-14 | 2011-04-27 | 新会双水发电(B厂)有限公司 | Coal bucket coal injection device |
| CN102901090A (en) * | 2011-07-26 | 2013-01-30 | 中国科学院工程热物理研究所 | Large circulating fluidized bed boiler having cyclone separators |
| CN202880189U (en) * | 2012-11-14 | 2013-04-17 | 张金才 | Vertical single rotary raw coal bunker dredging device |
| CN205820280U (en) * | 2016-06-29 | 2016-12-21 | 陈玉 | A kind of feeder |
| CN207214030U (en) * | 2017-09-20 | 2018-04-10 | 东方电气集团东方锅炉股份有限公司 | A kind of coal supply system for using low calorie fuels CFBB |
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| CN109654527B (en) | 2020-05-05 |
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