CN104654342B - Coal mixing combustion anti-block apparatus and coal mixing combustion method - Google Patents
Coal mixing combustion anti-block apparatus and coal mixing combustion method Download PDFInfo
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- CN104654342B CN104654342B CN201510045286.XA CN201510045286A CN104654342B CN 104654342 B CN104654342 B CN 104654342B CN 201510045286 A CN201510045286 A CN 201510045286A CN 104654342 B CN104654342 B CN 104654342B
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- blanking tube
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Abstract
The present invention relates to a kind of coal mixing combustion anti-block apparatus and coal mixing combustion method, it is characterized in：（1）Conveyer belt and raw coal, which are sent to, by broken coal or through cleaning, dry the coal slime of pre-treatment enters coal bunker, formation Mixture Density Networks together；（2）Mixture Density Networks in coal bunker fall in bearing chassis after decompression is bored, and drive device drives unloading arm to make revolution at a slow speed and acted, and forces scraping underseam to center discharging opening；（3）Mixture Density Networks are connected with other equipment through up-small and down-big material blanking tube by discharging opening or through tilting material blanking tube, are finally sent to boiler；When the Mixture Density Networks in material blanking tube are in high charge level, top unloader slows down while tup hits the tube wall of material blanking tube, to remove the coal charge of material blanking tube internal bond；（4）When detection means detects disconnected coal during coal charge normally conveys, anti-blocking sprayer transmitting water jets under high pressure, block clearing is carried out to coal bunker and inclination material blanking tube.The present invention, which can realize, smooth, quantitative in order after raw coal and coal slime or the mixing of other coals is transported to feeder or boiler.
Description
Technical field
The present invention relates to a kind of coal mixing combustion anti-block apparatus and coal mixing combustion method, belongs to Thermal Power Enterprises coal handling system equipment
Technical field.
Background technology
Coal in China yield is leapt to the first in the world, and the depth and range of Coal dressing are all answered in fast development, various atures of coal
Miscellaneous changeable, especially coal slime, the yield of coal slime rise year by year, and the comprehensive utilization of coal slime turns into the problem of in the urgent need to address.
Because coal slime is a kind of emission in coal washing process, particle contained therein is very thin（Generally all in below 0.5mm）, it is overall
Character is high-moisture（Water content is between 25% ~ 40%）, high viscosity, high retentiveness, high ash content, simultaneously because coal slime is washed in colliery
Coal works is as discarded object, and the debris in coal slime is more, including stone, metalwork.Just because of many unfavorable conditions, coal slime be present
Large-scale commercial Application is difficult to realize, it is very interior for a long time to be kept outside of the door by power consumer, with civilian sell for main outlet.With
The continuous innovation of technology is improved, and domestic all conglomeraties, including power industry are all received in the maximization attempted and exploration coal slime utilizes
Benefit, therefore, the coal mixing combustion of boiler is into designing institute and an important topic of power plant's research of technique.Many generatings domestic at present
Enterprise all employs various schemes and attempted, and has failure, there is that technology is jejune, also has different proportion to mix certainly and burns till
Work(, it should be noted that as long as carrying out coal mixing combustion, more or less all achieve certain economic benefit.So can be with
Certainly coal mixing combustion of saying in the application of Thermal Power Generation Industry is to have very high economic value, plus turning waste into wealth, beneficial to environmental protection etc.
Advantage, the technique have very far reaching significance.
Coal slime, which mixes burning, at present two kinds of typical techniques, and one kind is that coal slime uses independent pipeline, and that directly enters boiler mixes burning
Method, but very high is required to the impurity of coal slime, it is strict to the moisture control of coal slime, and complexity of conveyance conduit equipment etc.,
Cause cost of investment huge and the operation expense of great number, although 50% or so can be reached at present by mixing burning rate, it is integrated
Economic benefit it is general, system run all right is bad.Another kind is to mix coal slime in raw coal, by normally entering to coal channel
Enter boiler, but this scheme is perplexed by viscous bridging, to result in serious coal breakage not smooth for the burning of mixing of small scale, dredges cost
Height, or even by forced-stopping machine, economic loss is serious, although therefore the technique use earliest, come to a halt.With to coal technology and
There are many targetedly equipment in the development of constantly bringing forth new ideas of auxiliary equipment, market, and it is many to can solve stifled, viscous, knot etc.
Problem, the technical characterstic of these comprehensive equipment, allows coal slime to mix the forward position burnt and shifted technology onto again, as long as material can be solved smoothly
The problem of blocking, coal slime mixes burning will be with minimum cost, and stable operating mode is taken the course of its own in industry, then raw coal direct blending combustion coal
Mud（Including more combustion of mixed coal）Technique will making a breakthrough property progress.Solve the conveying of worst coal slime and what is used ask
Topic, the use for other coals will be even more handy.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of coal mixing combustion anti-block apparatus and coal blending
Co-combustion method, can realize raw coal and coal slime or other coals uniformly after mixing it is smooth, in order it is quantitative be transported to feeder or
Boiler, basic condition is provided for coal mixing combustion, completes the committed step of coal mixing combustion technique.
According to technical scheme provided by the invention, a kind of coal mixing combustion anti-block apparatus, it is characterized in：It is clear including coal bunker and water cannon
Block apparatus, the bottom connection bearing chassis of coal bunker, bearing chassis centre are provided with discharging opening, and discharge outlet is provided with material blanking tube, described
Coal bunker is connected by material blanking tube with feeder or scrapper conveyor, and the discharging opening connection of feeder or scrapper conveyor tilts material blanking tube；Institute
Installation decompression cone inside coal bunker is stated, decompression cone is erected at the inside center of coal bunker, and decompression cone is hollow structure, depressurizes the vertex of a cone of cone
Upward, depressurize and unloading arm is installed between the bottom of cone and bearing chassis, the power output axis connection of unloading arm and drive device；Institute
Stating water cannon blockage-clearing device includes water-storing device, and water-storing device delivery port sets filter, and the delivery port of water-storing device passes through pipe
Road connects one end of high-pressure pump, and the other end of high-pressure pump connects anti-blocking sprayer by pressure duct, and anti-blocking sprayer is arranged in coal bunker
Perisporium and tilt material blanking tube tube wall on；In the material blanking tube disposed outside pneumatic hammer.
Further, the pneumatic hammer includes mounting bracket, and cylinder, the piston rod connection hammer of cylinder are installed in mounting bracket
Head.
Further, the region contacted on the material blanking tube with tup sets protection device.
Further, the material blanking tube presents small lower big structure.
Further, the coal bunker bottom is semicircle or arc.
The coal mixing combustion method, it is characterized in that, comprise the following steps：
（1）Broken coal or the coal slime by removal of impurities, drying pre-treatment are uniformly sent to conveyer belt and raw coal and entered together
Enter coal bunker, form Mixture Density Networks, the largest particles of Mixture Density Networks is not more than 100mm, and the moisture content of Mixture Density Networks is not higher than 20%；
（2）Mixture Density Networks in coal bunker fall in bearing chassis after decompression is bored, and drive device drives unloading arm to return at a slow speed
Rotate and make, the rotating speed of unloading arm is 0.3-3 revs/min, forces scraping underseam to center discharging opening；
（3）Mixture Density Networks are connected with other equipment through up-small and down-big material blanking tube by discharging opening or through tilting material blanking tube, finally
It is sent to boiler；When the Mixture Density Networks in material blanking tube are in high charge level, top unloader slows down while tup hits the pipe of material blanking tube
Wall, to remove the coal charge of material blanking tube internal bond；The high charge level refers to that Mixture Density Networks exceed the 80% of material blanking tube volume, and pneumatic hammer is adopted
With 0.4~0.8MPa compressed air, the impulsive force of hammer head is 1000kg, and air consumption is not more than 0.0015 m3；
（4）When detection means detects disconnected coal during coal charge normally conveys, anti-blocking sprayer transmitting water jets under high pressure, to coal bunker and incline
Oblique material blanking tube carries out block clearing, and the pressure of water jets under high pressure is 0.8-1.6MPa, effective range 0-15m.
The present invention has advantages below：（1）Give effective anti-blocking, the anti-stifled measure such as coal using power, it is ensured that coal handling system
Without blocking, basis is provided for coal mixing combustion；（2）Using and do not destroy original coal delivering member and unite, carry out the conveying of high viscosity ature of coal,
It is preferably minimized the cost of coal mixing combustion；（3）Coal slime can be pre-processed, to meet the use of various boilers and auxiliary device,
Mix burn scope it is wider, the scope used is also more extensive；（4）Coal mixing combustion is realized, utilizes coal inferior, coal slime etc., response country
The call of energy-conserving and environment-protective, the preferential policies such as state tax revenue are enjoyed, are turned waste into wealth, section branch wound effect.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of water cannon blockage-clearing device.
Fig. 3 is the structural representation of block clearing pneumatic hammer.
Embodiment
With reference to specific accompanying drawing, the invention will be further described.
As shown in FIG. 1 to 3：The coal mixing combustion anti-block apparatus includes coal bunker 1, decompression cone 2, drive device 3, unloading arm
4th, bearing chassis 5, material blanking tube 6, water cannon blockage-clearing device 7, water-storing device 7-1, filter 7-2, high-pressure pump 7-3, anti-blocking sprayer
7-4, pressure duct 7-5, pneumatic hammer 8, cylinder 8-1, tup 8-2, mounting bracket 8-3, protection device 8-4 etc..
As shown in figure 1, the present invention includes coal bunker 1, the bottom connection bearing chassis 5 of coal bunker 1, the middle part of bearing chassis 5 is provided with
Discharging opening, discharge outlet are provided with material blanking tube 6；The installation decompression cone 2 inside the coal bunker 1, decompression cone 2 is erected at the interior of coal bunker 1
Portion center, decompression cone 2 is hollow structure, and the vertex of a cone of decompression cone 2 upward, depressurizes the bottom installation drive device 3 of cone 2, driving dress
Put installation unloading arm 4 on 3 power output shaft；The unloading arm 4 is driven by drive device 3 to turn round, and unloading arm 4 is strong when turning round
System equably scrapes coal the center of bearing chassis 5, and coal bunker 1 is discharged by blanking port；The coal bunker 1 passes through material blanking tube 6 and its
His equipment（Such as feeder, scrapper conveyor or belt feeder）It is connected, the discharging opening connection of feeder or scrapper conveyor tilts material blanking tube 9；
As shown in figure 1, the material blanking tube 6 presents small lower big structure, no blocking sequelae；To prevent the inner pressure relief of coal bunker 1
There is knot arch and blocked in the position of the top of cone 2, installation water cannon blockage-clearing device 7, is removed and blocked using the long-range impact energy of water under high pressure；Such as
Shown in Fig. 2, the water cannon blockage-clearing device 7 includes water-storing device 7-1, and water-storing device 7-1 delivery ports set filter 7-2, store
Water installations 7-1 delivery port connects high-pressure pump 7-3 one end by pipeline, and the high-pressure pump 7-3 other end passes through pressure duct 7-5
Anti-blocking sprayer 7-4 is connected, anti-blocking sprayer 7-4 is arranged in coal bunker 1 and tilts the perisporium of material blanking tube 9；Water source enters after initial filter to be stored
Water installations 7-1 is standby, and after starting water-storing device 7-1, high-pressure pump 7-3 is pressurized from the filtered device 7-2 water suctions of water-storing device 7-1
Each anti-blocking sprayer 7-4, anti-blocking sprayer 7-4 spout alignment knot arch material, water jets under high pressure are sent to by pressure duct 7-5 afterwards
Directly effect, which is removed, blocks；In addition, can equally arrange anti-blocking sprayer in the material blanking tube gone out to coal etc., the stifled of the region is prevented
Plug problem；
To prevent that viscous coal from occurring viscous wall in material blanking tube 6 or extruding blocks, pneumatic hammer 8 is arranged outside material blanking tube 6, utilizes compression
Air push tup makees hammering action to the tube wall of material blanking tube 6, easily removes and blocks；As shown in figure 3, the pneumatic hammer 8 includes installation
Support 8-3, cylinder 8-1, cylinder 8-1 piston rod connection tup 8-2 are installed on mounting bracket 8-3；On the material blanking tube 6
The region contacted with tup 8-2 sets protection device 8-4, can protect the stress point deformation of material blanking tube 6；The pneumatic hammer 8 one to
Used simultaneously by a pair or two pairs, when being connected to jam signal, pneumatic hammer 8 starts, and compressed air enters cylinder 8-1, and cylinder 8-1 is high
Speed promotion tup 8-2 hits the protection device 8-4 of the outer wall of material blanking tube 6, and material falls in vibration blanking pipe 6；
The bottom of coal bunker 1 is semicircle or arc, is avoided with extruding angle；Coal bunker 1 is not more than if any closing in, its inclination angle
20°.The bearing chassis 5 is enhancing structure, can bear the weight of whole storehouse coal；The inside of coal bunker 1 and the inner surface of bearing chassis 5
Do stainless steel paste or abrasionproof processing, finish Ra be not more than 3.2.
The present invention the course of work and operation principle be：Coal slime carries out suitable pre-treatment as needed, such as removal of impurities, drying
Deng（Meet that moisture content is not higher than 20% requirement）, then uniformly it is sent to conveyer belt and raw coal and enters coal bunker 1 together, was falling
Coal slime and raw coal further mix in journey, and Mixture Density Networks fall in bearing chassis 5 after decompression cone 2, and drive device 3 drives unloading arm
4, which make revolution at a slow speed, acts, and forcing scraping underseam, discharging opening is using up-small and down-big material blanking tube 6 and its to center discharging opening
He is connected or into elephant trunk at equipment, is finally sent to boiler.To prevent knot arch occurs in the position of top in coal bunker 1 from blocking, in coal bunker 1
Perisporium arranges anti-blocking sprayer 7-4, is removed and blocked using the long-range impact energy of water under high pressure；To prevent viscous coal from occurring in material blanking tube 6
Viscous wall or extruding are blocked, and pneumatic hammer 8 is arranged outside material blanking tube 6, promote tup to make hammering action to tube wall using compressed air, easily
Remove and block.Feeder or belt feeder outlet blanking pipe outer wall can also arrange anti-blocking sprayer 7-4, be increased by few press water
Block clearing while adding lubricity.Apparatus control system is directly connected to Power Plant DCS, and automaticity is high, is controlled using converter technique
Discharging speed, and pass through the automatic start-stop of each block clearing equipment of PLC logic controls, it is ensured that the coal slime and raw coal mixture of high viscosity are suitable
Freely it is transported to boiler.
The coal mixing combustion method, specifically includes following steps：
（1）Broken coal or the coal slime by removal of impurities, drying pre-treatment are uniformly sent to conveyer belt and raw coal and entered together
Enter coal bunker 1, form Mixture Density Networks, the largest particles of Mixture Density Networks is not more than 100mm, and the moisture content of Mixture Density Networks is not higher than 20%；
（2）Mixture Density Networks in coal bunker 1 fall in bearing chassis 5 after decompression cone 2, and drive device 3 drives unloading arm 4 to make slowly
Fast revolution action, the rotating speed of unloading arm 4 is 0.3-3 revs/min, forces scraping underseam to center discharging opening；
（3）Mixture Density Networks are connected with other equipment through up-small and down-big material blanking tube 6 by discharging opening or through tilting material blanking tube 9, most
After be sent to boiler；When the Mixture Density Networks in material blanking tube 6 are in high charge level, top unloader slows down while tup 8-2 hits blanking
The tube wall of pipe 6, to remove the coal charge of the internal bond of material blanking tube 6；The high charge level refers to that Mixture Density Networks exceed material blanking tube volume
80%, pneumatic hammer 8 is using 0.4~0.8MPa compressed air, and hammer head 8-2 impulsive force is 1000kg, and air consumption is not more than
0.0015 m³；
（4）When detection means detects disconnected coal during coal charge normally conveys, anti-blocking sprayer 7-4 transmitting water jets under high pressure, to coal bunker 1
Block clearing is carried out with material blanking tube 9 is tilted, the pressure of water jets under high pressure is 0.8-1.6MPa, effective range 0-15m.
Present system is concise, rationally, stably, and for equipment effectively using former defeated coal delivery system, space-consuming is few, equipment letter
It is single, minimum, the optimal transport scheme for not only meet run coal bin first in first out, quantitatively conveying is invested, while meet high viscosity ature of coal
The requirement of conveying, in that context it may be convenient to realize the requirement of coal mixing combustion and each ature of coal blending transportation.The present invention is blocked up with solving caking coal
Plug induction system is starting point, cleverly with current advanced anti-blocking anti-plug equipment, reaches wanting for the various atures of coal of smooth delivery of power
Ask, lay the foundation for power industry large-scale promotion coal mixing combustion, not only in resource, environmental protection, even more in each side such as economy, benefits
Face etc. has very far-reaching influence.
Claims (1)
1. a kind of coal mixing combustion anti-block apparatus, including coal bunker（1）With water cannon blockage-clearing device（7）, it is characterized in that：Coal bunker（1）Bottom
Portion connects bearing chassis（5）, bearing chassis（5）Centre is provided with discharging opening, and discharge outlet is provided with material blanking tube（6）；In the coal bunker
（1）Inside installation decompression cone（2）, decompression cone（2）It is erected at coal bunker（1）Inside center, decompression cone（2）For hollow structure, subtract
Pressure cone（2）The vertex of a cone upward, decompression cone（2）Bottom and bearing chassis（5）Between unloading arm is installed（4）, unloading arm（4）With drive
Dynamic device（3）Power output axis connection；Anti-blocking sprayer（7-4）It is arranged in coal bunker（1）Perisporium and tilt material blanking tube（9）Pipe
On wall；In the material blanking tube（6）Disposed outside pneumatic hammer（8）；
The pneumatic hammer（8）Including mounting bracket（8-3）, in mounting bracket（8-3）Upper installation cylinder（8-1）, cylinder（8-1）Work
Stopper rod connects tup（8-2）；In the material blanking tube（6）Upper and tup（8-2）The region of contact sets protection device（8-4）；Institute
State coal bunker（1）Pass through material blanking tube（6）It is connected with feeder or scrapper conveyor, the discharging opening connection of feeder or scrapper conveyor tilts blanking
Pipe（9）, the delivery port setting filter of water-storing device（7-2）；
The material blanking tube（6）Present small lower big structure；The coal bunker（1）Bottom is semicircle or arc；
Coal bunker（1）Interior Mixture Density Networks are bored through decompression（2）After fall in bearing chassis（5）On, drive device（3）Drive unloading arm（4）
Make revolution at a slow speed to act, force scraping underseam to center discharging opening；Mixture Density Networks are by discharging opening through up-small and down-big material blanking tube
（6）It is connected with other equipment or through tilting material blanking tube（9）, finally it is sent to boiler；Work as material blanking tube（6）Interior Mixture Density Networks are in high and expected
During position, top unloader slows down while tup hits material blanking tube（6）Tube wall, to remove material blanking tube（6）The coal charge of internal bond；
When detection means detects disconnected coal during coal charge normally conveys, anti-blocking sprayer transmitting water jets under high pressure, to coal bunker（1）With inclination material blanking tube
（9）Carry out block clearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045286.XA CN104654342B (en) | 2015-01-28 | 2015-01-28 | Coal mixing combustion anti-block apparatus and coal mixing combustion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045286.XA CN104654342B (en) | 2015-01-28 | 2015-01-28 | Coal mixing combustion anti-block apparatus and coal mixing combustion method |
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| Publication Number | Publication Date |
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| CN104654342A CN104654342A (en) | 2015-05-27 |
| CN104654342B true CN104654342B (en) | 2018-01-23 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423309A (en) * | 2015-12-14 | 2016-03-23 | 鹤山市凤台菱精密铸造有限公司 | Combustion preheating device |
| CN109896306B (en) * | 2019-04-28 | 2024-04-19 | 英飞智信（苏州）科技有限公司 | Distributing device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2633806Y (en) * | 2003-09-10 | 2004-08-18 | 周利庆 | Dredging device for coal bunker blocking water cannon |
| CN201448860U (en) * | 2009-03-26 | 2010-05-05 | 方逸庆 | Biomass stokehold bottomless adjustable duplex silo |
| CN101564730A (en) * | 2009-05-25 | 2009-10-28 | 上海大屯能源股份有限公司 | Method for recycling sludge in coal washery and online direct recycling process |
| CN201517880U (en) * | 2009-09-27 | 2010-06-30 | 济南市琦泉热电有限责任公司 | Coal slime drying system |
| CN102072499B (en) * | 2011-01-30 | 2012-02-08 | 杨祥良 | Flue gas low temperature denitriding and coal slime drying combined circulating system |
| CN102506421B (en) * | 2011-10-31 | 2014-02-05 | 徐州华美坑口环保热电有限公司 | Circulating fluid bed (CFB) boiler coal supply system for blending combustion of middling coal |
| CN103086096B (en) * | 2013-02-18 | 2014-12-03 | 赵东楼 | Hopper bin wall vibrating air hammer |
| CN104085625A (en) * | 2014-07-07 | 2014-10-08 | 无锡市华通环保设备有限公司 | Full-automatic coal bunker water cannon dredging device |
| CN104150242B (en) * | 2014-08-04 | 2016-08-03 | 无锡市华通环保设备有限公司 | The silo center unloader that motor internal drives |
| CN204611815U (en) * | 2015-01-28 | 2015-09-02 | 无锡市华通环保设备有限公司 | Coal slime mixes burning anti-block apparatus |
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