CN105823038A - Coal conveying system used for circulating fluidized bed boiler and large-ratio coal slurry mixed burning - Google Patents
Coal conveying system used for circulating fluidized bed boiler and large-ratio coal slurry mixed burning Download PDFInfo
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- CN105823038A CN105823038A CN201610317186.2A CN201610317186A CN105823038A CN 105823038 A CN105823038 A CN 105823038A CN 201610317186 A CN201610317186 A CN 201610317186A CN 105823038 A CN105823038 A CN 105823038A
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- coarse crushing
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- broken bits
- slime
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/30—Separating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/50—Blending
- F23K2201/501—Blending with other fuels or combustible waste
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a coal conveying system used for a circulating fluidized bed boiler and large-ratio coal slurry mixed burning. The coal conveying system comprises a coal slurry conveying system, a raw coal conveying system, two mixing belt conveyors, a coarse crushing system, a coal slurry auxiliary conveying system, a coarse crushing, material distributing and conveying system, a fine crushing system, a fine crushing, material distributing and conveying system, a coal storing and conveying system and a compound dust removal device. The coal conveying system has the beneficial effects that an existing coal conveying system is used for conveying high-viscosity coal without being damaged, and compared with pure raw coal conveying, surplus electricity consumption is not added, and the cost of coal blending and mixed burning is reduced to minimum; raw coal and coal slurry are mixed on the same belt at the source; coal feeding manners are diverse and flexible; the applicability of the coal slurry moisture is wide; and the coal slurry can be preprocessed to be used by various boilers and accessory equipment, the mixed burning range is wider, and the use range is also wider.
Description
Technical field:
The present invention relates to a kind of Coal Conveying System of Power Plant, particularly relate to a kind of CFBB vast scale and mix burning coal slime coal handling system.
Background technology:
Coal in China yield leaps to the first in the world, and the degree of depth of Coal dressing and range are all in fast development, and various atures of coal are complicated and changeable, especially coal slime, and the yield of coal slime rises year by year, and the comprehensive utilization of coal slime has become problem in the urgent need to address.Owing to coal slime is a kind of emission in coal washing process, granule contained therein is very thin (the most all at below 0.5mm), overall character is high-moisture (water content is between 25%～40%), high viscosity, high retentiveness, high ash, simultaneously because coal slime is as garbage in coal washery, colliery, foreign material in coal slime are more, comprise quartz sand, dense medium metal dust.Just because of there is many unfavorable conditions, coal slime is difficulty with large-scale commercial Application, very long-term in kept outside of the door by power consumer, sell for main outlet with civilian.Improvement is constantly reformed along with technology, domestic all conglomeraties, all attempting and exploring the maximum gain that coal slime utilizes, therefore, the coal mixing combustion Cheng Liao designing institute of boiler and an important topic of power plant's research of technique including power industry.Current domestic a lot of electricity power enterprises all have employed various scheme and attempted, and have failure, have technology jejune, the most also have different proportion to mix burning successfully, it should be noted that as long as carrying out coal mixing combustion, the most all to achieve certain economic benefit.So, it suffices to say that coal mixing combustion is to have the highest economic worth in the application of Thermal Power Generation Industry, adding and turn waste into wealth, beneficially the advantage such as environmental protection, this technique has very far reaching significance.
Coal slime mixes burning at present two kinds of typical techniques, one is that coal slime uses independent pipeline, directly enter the co-combustion method of boiler, but the impurity of coal slime is required the highest, strict to the moisture control of coal slime, and the complexity etc. of conveyance conduit equipment, cause cost of investment huge and the operation expense of great number, although mixing burning rate can reach about 50% at present, but its comprehensive economic benefit being general, system run all right is the best.Another kind is to mix in raw coal by coal slime; boiler is entered by normal coal supply channel; but this scheme is perplexed by viscous bridging; to result in serious coal breakage the most smooth for the burning of mixing of small scale; dredging cost is high, and even by forced-stopping machine, economic loss is serious; although therefore this technique uses the earliest, but come to a halt.Along with coal supply technology and the development of constantly bringing forth new ideas of auxiliary equipment, market occurs in that many equipment targetedly, can solve the problems such as stifled, viscous, knot, the technical characterstic of these equipment comprehensive, allowing coal slime mix and burn the forward position again having shifted technology onto, as long as the problem of feed blocking can be solved smoothly, coal slime mixes burning will be with minimum cost, stable operating mode is taken the course of its own in industry, then raw coal direct blending combustion coal slime (including many combustion of mixed coals) technique will the progress of making a breakthrough property.Solving the conveying of worst coal slime and the problem used, the use for other coals will be the most handy.
Summary of the invention:
It is an object of the invention to provide a kind of vast scale and mix burning coal slime coal handling system, be capable of raw coal and coal slime or other coals uniformly mix after smooth and easy, the most quantitative be transported to feeder or boiler, provide the CFBB vast scale of basic condition to mix burning coal slime coal handling system for coal mixing combustion.
The present invention is implemented by following technical scheme: CFBB vast scale mixes burning coal slime coal handling system, and it includes coal slime induction system, conveyer system of raw coal, two mixing ribbon conveyers, coarse crushing system, coal slime auxiliary induction system, coarse crushing cloth induction system, fine break, cloth induction system in small, broken bits, coal storage induction system, compound dust-collection devices；Two delivery ends of the coal slime discharging tee joint elephant trunk of described coal slime induction system are respectively placed in above two described mixing ribbon conveyers；Two delivery ends of the raw coal discharging tee joint elephant trunk of described conveyer system of raw coal are respectively placed in above two described mixing ribbon conveyers；The delivery end of two described mixing ribbon conveyers is corresponding respectively to be placed in above two scalping machine inlets of described coarse crushing system；The discharging opening of two coarse crushing coal spouts of described coarse crushing system is corresponding respectively to be placed in above two coarse crushing discharge belt conveyors of described coarse crushing cloth induction system；The discharging opening correspondence respectively of two scalping coal spouts of described coarse crushing system is placed in above two described coarse crushing discharge belt conveyors；The delivery end of two coarse crushing ribbon conveyers of described coarse crushing cloth induction system is respectively placed in above two remove impurity sieve charging apertures of described fine break；Two discharge ports of the coal slime auxiliary discharging tee joint elephant trunk of described coal slime auxiliary induction system are respectively placed in above two described coarse crushing ribbon conveyers；The discharging opening of two coal spouts in small, broken bits of described fine break is corresponding respectively to be placed in above two discharge belt conveyors in small, broken bits of described cloth induction system in small, broken bits；The discharging opening correspondence respectively of two dusting cover coal spouts of described fine break is placed in above two described discharge belt conveyors in small, broken bits；Two delivery ends of the discharging tee joint elephant trunk in small, broken bits of described cloth induction system in small, broken bits are respectively placed in above two coal storage ribbon conveyers of described coal storage system；It is provided with described compound dust-collection device between two delivery ends and described coal storage ribbon conveyer of described discharging tee joint elephant trunk in small, broken bits.
Described coal slime induction system includes two set coal slurry conveying equipments, and often set coal slurry conveying equipment includes ground coal bunker, vibration coal feeder, coal slime ribbon conveyer, a described coal slime discharging tee joint elephant trunk；The discharging opening of described ground coal bunker is placed in the top of described vibration coal feeder；Described vibration coal feeder is placed in the top of coal slime ribbon conveyer；The delivery end of described coal slime ribbon conveyer is connected with the feed end of described coal slime discharging tee joint elephant trunk.
Described conveyer system of raw coal includes two set raw coal conveying equipments；Often overlap described raw coal conveying equipment and include a raw coal ribbon conveyer, a spiral material separator；One described raw coal discharging tee joint elephant trunk and a foreign material conveyer belt；The delivery end of described raw coal ribbon conveyer is placed in the charging aperture of described spiral material separator；The feeding end of described foreign material conveyer belt is placed in the miscellaneous object outlet of described spiral material separator；The discharging opening of described spiral material separator is connected with the feed end of described raw coal discharging tee joint elephant trunk.
Described spiral material separator includes casing and separates motor, and being externally provided with described separation motor in described casing, in described casing, level is provided with rotating shaft, and described separation motor is connected with described rotating shaft transmission；In described rotating shaft in described casing, uniform parallel arrangement is provided with some pieces of tooth plates；The sidewall that described casing is relative is respectively equipped with the described charging aperture relative with described tooth plate end face and miscellaneous object outlet；The bottom of described casing is provided with described discharging opening；It is arranged over double-edged fine-toothed comb with described foreign material conveyer belt below described tooth plate in described casing；Described rotating shaft in described casing is respectively arranged at two ends with circular end plate, and described circular end plate is placed between described tooth plate and described casing；The top of described raw coal ribbon conveyer is placed between two pieces of described circular end plate.Arranging end plate at the two ends of rotating shaft, raw coal only falls within the tooth plate between end plate, and when solving the work of existing material separator, coarse coal, spoil etc. are easily stuck in the problem between tooth plate and casing.
Described coarse crushing system includes two set coarse smash equipments, often overlaps described coarse smash equipment and includes scalping machine, boulder crusher and described coarse crushing coal spout；The oversize discharging opening of described scalping machine is connected by pipeline with the charging aperture of described boulder crusher, is provided with described coarse crushing coal spout on the discharging opening of described boulder crusher, is provided with described scalping coal spout on the siftage discharging opening of described scalping machine.
Described coarse crushing cloth induction system includes two described coarse crushing discharge belt conveyors that be arranged in parallel；Two described coarse crushing ribbon conveyers that be arranged in parallel；Described coarse crushing discharge belt conveyor is vertically arranged with described coarse crushing ribbon conveyer；Above two described coarse crushing discharge belt conveyors, the most up and down coarse fodder that is provided with is distributed coal plough；Coarse crushing distribution coal spout it is provided with below coarse crushing discharge belt conveyor below each described coarse fodder distribution coal plough, the discharging opening of two described coarse crushing distribution coal spouts is placed in above a described coarse crushing ribbon conveyer, and another described coarse crushing ribbon conveyer is placed in below the afterbody of two described coarse crushing discharge belt conveyors.Thus realize two coarse crushing discharge belt conveyors and two coarse crushing ribbon conveyers and intersect intercommunication, greatly enrich the coal handling system method of operation, improve the safe and reliable property of coal handling system.
Described coal slime auxiliary induction system includes vibration coal feeder, coal slime auxiliary ribbon conveyer, described coal slime auxiliary discharging tee joint elephant trunk, the discharging opening of described vibration coal feeder is placed in above described coal slime auxiliary ribbon conveyer, and the charging aperture of described coal slime auxiliary discharging tee joint elephant trunk is placed in below the delivery end of described coal slime auxiliary ribbon conveyer.
Described fine break includes two set fine crushing device, often overlaps described fine crushing device and includes remove impurity sieve, electric three passes, dusting cover machine, fine crusher, shunt valve；The siftage discharging opening of described remove impurity sieve connects with the charging aperture of described electric three passes；One discharging opening of described electric three passes is connected by pipeline with the charging aperture of described dusting cover machine；The oversize discharging opening of described dusting cover machine is connected by pipeline with the charging aperture of described fine crusher, and the discharging opening at described fine crusher is provided with described coal spout in small, broken bits；The siftage discharging opening of described dusting cover machine is provided with described dusting cover coal spout；Another discharging opening of described electric three passes is connected by described shunt valve with described dusting cover coal spout.By installing dusting cover machine, fine crusher bypass coal spout, can make that coal slime is the most screened, broken is directly entered run coal bin, raw coal mixes with coal slime after passage sieving approach is transported on another road.Not only reduce the chute blockage frequency of dusting cover machine, fine crusher, and make the method for operation more motility, safety and the reliability of coal handling system.
Described cloth induction system in small, broken bits includes two described discharge belt conveyors in small, broken bits that be arranged in parallel；Two described ribbon conveyers in small, broken bits that be arranged in parallel；Described discharge belt conveyor in small, broken bits is vertically arranged with described ribbon conveyer in small, broken bits；Above two described discharge belt conveyors in small, broken bits, the most up and down fines that is provided with is distributed coal plough；It is provided with distribution coal spout in small, broken bits below discharge belt conveyor in small, broken bits below each described fines distribution coal plough, the discharging opening of two described distribution coal spouts in small, broken bits is placed in above a described ribbon conveyer in small, broken bits, another described ribbon conveyer in small, broken bits is placed in below the afterbody of two described discharge belt conveyors in small, broken bits, is provided with described discharging tee joint elephant trunk in small, broken bits below the delivery end of ribbon conveyer in small, broken bits every described.Thus realize two discharge belt conveyors in small, broken bits and two ribbon conveyers in small, broken bits and intersect intercommunication, greatly enrich the coal handling system method of operation, improve the safe and reliable property of coal handling system.
Described coal storage system includes two described coal storage ribbon conveyers be arrangeding in parallel and more than one coal store, described coal store is placed in below described coal storage ribbon conveyer, the most up and down above described coal storage ribbon conveyer above described coal store charging aperture it is provided with overflow-proof coal coal plough, described overflow-proof coal coal plough includes coal plough main body and main plough, main plough Middle face in described main plough both sides is the most vertically provided with a jointer, and the jointer face of each described jointer and the angle α in corresponding described main plough face are 120 °-150 °.In order to disperse part of coal stream, make the coal stream falling into hopper axially opposing uniformly at belt feeder, thus reach to reduce chute blockage and overflow the number of times of coal, coal efficiency in raising.
Described compound dust-collection device includes the deflector chute being located at coal storage ribbon conveyer top, it is provided with return duct in the middle part of described discharging tee joint elephant trunk in small, broken bits with described deflector chute, the delivery end of described discharging tee joint elephant trunk in small, broken bits is placed in described deflector chute, it is provided with dust-break curtain at described deflector chute inner homogeneous, it is provided with sack cleaner at described deflector chute end top, the inlet scoop of described sack cleaner is internal with described deflector chute discharge end to be connected, it is provided with aspiration channel between the inside, front end of the inlet scoop of described sack cleaner and described deflector chute, the probe of anemobiagraph it is provided with in described deflector chute terminus inner, the outfan of described anemobiagraph is connected with the input of controller, the outfan of described controller is connected with the fan frequency converter of described sack cleaner；Being equipped with shower nozzle in terminus inner and the described coal storage ribbon conveyer both sides of described deflector chute, the described shower nozzle of described coal storage ribbon conveyer both sides is towards the work surface of described coal storage ribbon conveyer and non-working surface；Described shower nozzle is all connected with water source by water pipe, is provided with spraying electromagnetic valve on described water pipe.
Advantages of the present invention: utilize and do not destroy original coal delivering member system, carrying out the conveying of high viscosity ature of coal, compared with simple conveying raw coal, not increasing unnecessary power consumption, make the cost of coal mixing combustion be preferably minimized；Source same belt realizes the mixing of raw coal and coal slime；The multiformity of upper coal mode, motility；The wide suitability of moisture of coal fines；Coal slime can carry out pretreatment, to meet the use of various boiler and auxiliary device, mix burning wider, the scope of use is the most extensive；Realize coal mixing combustion, utilize coal, coal slime etc. inferior, respond national energy-saving environmental protection, the call of comprehensive utilization of resources, enjoy the preferential policies such as state tax revenue, turn waste into wealth, joint wound effect.
Accompanying drawing illustrates:
Fig. 1 is the integrated connection schematic diagram of the present invention.
Fig. 2 is ground coal bunker, coal slime ribbon conveyer and the scheme of installation of vibration coal feeder.
Fig. 3 is the overall schematic of spiral material separator.
Fig. 4 is the A-A generalized section of Fig. 3.
Fig. 5 is the use schematic diagram of spiral material separator.
Fig. 6 is the overall schematic of coarse crushing system.
Fig. 7 is the side view of Fig. 6.
Fig. 8 is the schematic diagram of coarse crushing cloth induction system.
Fig. 9 is that the B of Fig. 8 is to side view.
Figure 10 is the overall schematic of fine break.
Figure 11 is the side view of Figure 10.
Figure 12 is the schematic diagram of cloth induction system in small, broken bits.
Figure 13 is that the C of Figure 12 is to side view.
Figure 14 is the front view of overflow-proof coal coal plough.
Figure 15 is the top view of Figure 14.
Figure 16 is the overall schematic of compound dust-collection device.
Coal slime induction system 1, coal bunker 101, coal slime ribbon conveyer 102, coal slime discharging tee joint elephant trunk 103, vibration coal feeder 104, conveyer system of raw coal 2, raw coal ribbon conveyer 201, spiral material separator 202；nullRaw coal discharging tee joint elephant trunk 203、Foreign material conveyer belt 204、Casing 205、Separate motor 206、Rotating shaft 207、Tooth plate 208、Charging aperture 209、Miscellaneous object outlet 210、Discharging opening 211、Double-edged fine-toothed comb 212、Circular end plate 213、Mixing ribbon conveyer 3、Coarse crushing system 4、Scalping machine 401、Boulder crusher 402、Coarse crushing coal spout 403、Scalping coal spout 404、Coarse crushing cloth induction system 5、Coarse crushing discharge belt conveyor 501、Coarse crushing ribbon conveyer 502、Coarse fodder distribution coal plough 503、Coarse crushing distribution coal spout 504、Coal slime auxiliary induction system 6、Vibration coal feeder 601、Coal slime auxiliary ribbon conveyer 602、Coal slime auxiliary discharging tee joint elephant trunk 603、Fine break 7、Remove impurity sieve 701、Electric three passes 702、Dusting cover machine 703、Fine crusher 704、Shunt valve 705、Coal spout 706 in small, broken bits、Dusting cover coal spout 707、Cloth induction system 8 in small, broken bits、Discharge belt conveyor 801 in small, broken bits、Ribbon conveyer 802 in small, broken bits、Fines distribution coal plough 803、Distribution coal spout 804 in small, broken bits、Discharging tee joint elephant trunk 805 in small, broken bits、Coal storage induction system 9、Coal storage ribbon conveyer 901、Coal store 902、Overflow-proof coal coal plough 903、Coal plough main body 904、Main plough 905、Jointer 906、Compound dust-collection device 10、Deflector chute 1001、Return duct 1002、Dust-break curtain 1003、Sack cleaner 1004、Aspiration channel 1005、Anemobiagraph 1006、Controller 1007、Fan frequency converter 1008、Shower nozzle 1009.
Detailed description of the invention:
Embodiment 1:
As it is shown in figure 1, coal handling system includes that coal slime induction system 1,2, two mixing ribbon conveyers 3 of conveyer system of raw coal, coarse crushing system 4, coarse crushing cloth induction system 5, coal slime assist induction system 6, fine break 7, cloth induction system 8 in small, broken bits, coal storage induction system 9.
Wherein, coal slime induction system 1 includes two ground 101, two coal slime ribbon conveyers of coal bunker, 103, two vibration coal feeders 104 of 102, two coal slime discharging tee joint elephant trunks；Two ground coal bunkers 101 are respectively placed in above two coal slime ribbon conveyers 102 be arrangeding in parallel, as in figure 2 it is shown, be provided with vibration coal feeder 104 below ground coal bunker 101, the discharging opening of ground coal bunker 101 seals with the charging aperture of vibration coal feeder 104 and connects；The discharging opening of vibration coal feeder 104 is placed in the top of coal slime ribbon conveyer 102, and the feed end of the delivery end of every coal slime ribbon conveyer 102 and a coal slime discharging tee joint elephant trunk 103 is connected.
Conveyer system of raw coal 2 includes two set raw coal conveying equipments；Often set raw coal conveying equipment includes a raw coal ribbon conveyer 202, raw coal discharging tee joint elephant trunk 203 of 201, spiral material separator and a foreign material conveyer belt 204；As shown in Figures 3 to 5, spiral material separator 202 includes casing 205 and separates motor 206, is externally provided with separation motor 206 in casing 205, and in casing 205, level is provided with rotating shaft 207, separates motor 206 and is in transmission connection with rotating shaft 207；In rotating shaft 207 in casing 205, uniform parallel arrangement is provided with some pieces of tooth plates 208；The sidewall that casing 205 is relative is respectively equipped with the charging aperture 209 relative with tooth plate 208 end face and miscellaneous object outlet 210；The bottom of casing 205 is provided with discharging opening 211；It is arranged over double-edged fine-toothed comb 212 with foreign material conveyer belt 204 below tooth plate 208 in casing 205；Rotating shaft 207 in casing 205 is respectively arranged at two ends with circular end plate 213, and circular end plate 213 is placed between tooth plate 208 and casing 205；The top of raw coal ribbon conveyer 201 is placed between two pieces of circular end plate 213.
The delivery end of raw coal ribbon conveyer 201 is placed in the charging aperture 209 of spiral material separator；The feeding end of foreign material conveyer belt 204 is placed in the miscellaneous object outlet 210 of spiral material separator；The discharging opening 211 of spiral material separator is connected with the feed end of raw coal discharging tee joint elephant trunk 203.
As shown in Figure 6 and Figure 7, coarse crushing system 4 includes two set coarse smash equipments, and often set coarse smash equipment includes scalping machine 401, boulder crusher 402, coarse crushing coal spout 403 and scalping coal spout 404；The oversize discharging opening of scalping machine 401 is connected by pipeline with the charging aperture of boulder crusher 402, is provided with coarse crushing coal spout 403 on the discharging opening of boulder crusher 402, is provided with scalping coal spout 404 on the siftage discharging opening of scalping machine 401.
As shown in Figure 8 and Figure 9, coarse crushing cloth induction system 5 includes two coarse crushing discharge belt conveyors 501 that be arranged in parallel；Two coarse crushing ribbon conveyers 502 that be arranged in parallel；Coarse crushing discharge belt conveyor 501 is vertically arranged with coarse crushing ribbon conveyer 502；Coarse crushing discharge belt conveyor 501 is placed in above coarse crushing ribbon conveyer 502；Above two coarse crushing discharge belt conveyors 501, the most up and down coarse fodder that is provided with is distributed coal plough 503；Coarse crushing distribution coal spout 504 it is provided with below coarse crushing discharge belt conveyor 501 below each coarse fodder distribution coal plough 503, the discharging opening of two coarse crushing distribution coal spouts 504 is placed in above a coarse crushing ribbon conveyer 502, and another coarse crushing ribbon conveyer 502 is placed in below the afterbody of two coarse crushing discharge belt conveyors 501.
As shown in Figure 10 and Figure 11, coal slime auxiliary induction system 6 includes vibration coal feeder 601, coal slime auxiliary ribbon conveyer 602, coal slime auxiliary discharging tee joint elephant trunk 603, the discharging opening of vibration coal feeder 601 is placed in above coal slime auxiliary ribbon conveyer 602, and the charging aperture of coal slime auxiliary discharging tee joint elephant trunk 603 is placed in below the delivery end of coal slime auxiliary ribbon conveyer 602；Fine break 7 includes two set fine crushing device, often overlaps described fine crushing device and includes remove impurity sieve 701, electric three passes 702, dusting cover machine 703, fine crusher 704, shunt valve 705；The siftage discharging opening of remove impurity sieve 701 connects with the charging aperture of electric three passes 702；One discharging opening of electric three passes 702 is connected by pipeline with the charging aperture of dusting cover machine 703；The oversize discharging opening of dusting cover machine 703 is connected by pipeline with the charging aperture of fine crusher 704, and the discharging opening at fine crusher 704 is provided with coal spout 706 in small, broken bits；The siftage discharging opening of dusting cover machine 703 is provided with dusting cover coal spout 707；Another discharging opening of electric three passes 702 is connected by shunt valve 705 with dusting cover coal spout 707.
As shown in Figure 12 and Figure 13, cloth induction system 8 in small, broken bits includes two discharge belt conveyors 801 in small, broken bits that be arranged in parallel；Two ribbon conveyers 802 in small, broken bits that be arranged in parallel；Discharge belt conveyor 801 in small, broken bits is vertically arranged with ribbon conveyer 802 in small, broken bits；Discharge belt conveyor 801 in small, broken bits is placed in above ribbon conveyer 802 in small, broken bits；Above two discharge belt conveyors 801 in small, broken bits, the most up and down fines that is provided with is distributed coal plough 803；It is provided with distribution coal spout 804 in small, broken bits below discharge belt conveyor in small, broken bits 801 below each fines distribution coal plough 803, the discharging opening of two distribution coal spouts 804 in small, broken bits is placed in above a ribbon conveyer 802 in small, broken bits, another ribbon conveyer 802 in small, broken bits is placed in below the afterbody of two discharge belt conveyors 801 in small, broken bits, is provided with discharging tee joint elephant trunk 805 in small, broken bits below the delivery end of every ribbon conveyer 802 in small, broken bits.
Coal storage system 9 includes two coal storage ribbon conveyers be arrangeding in parallel 901 and three coal stores 902, coal store 902 is placed in below coal storage ribbon conveyer 901, the most up and down above coal storage ribbon conveyer 901 above coal store 902 charging aperture it is provided with overflow-proof coal coal plough 903, as shown in Figure 14 and Figure 15, overflow-proof coal coal plough 903 includes coal plough main body 904 and main plough 905, the most vertically being provided with a jointer 906 in the middle part of the main plough face 907 of main plough 905 both sides, the jointer face 908 of each jointer 906 and the angle α in corresponding main plough face are 120 °-150 °.
Two delivery ends of the coal slime discharging tee joint elephant trunk 103 of coal slime induction system 1 are respectively placed in above two mixing ribbon conveyers 3；Two delivery ends of the raw coal discharging tee joint elephant trunk 203 of conveyer system of raw coal 2 are respectively placed in above two mixing ribbon conveyers 3；The delivery end of two mixing ribbon conveyers 3 is corresponding respectively to be placed in above two scalping machine 401 charging apertures of coarse crushing system 4；The discharging opening of two coarse crushing coal spouts 403 of coarse crushing system 4 is corresponding respectively to be placed in above two coarse crushing discharge belt conveyors 501 of coarse crushing cloth induction system 5；The discharging opening correspondence respectively of two scalping coal spouts 404 of coarse crushing system 5 is placed in above two coarse crushing discharge belt conveyors 501；The delivery end of two coarse crushing ribbon conveyers 502 of coarse crushing cloth induction system 5 is respectively placed in two remove impurity of fine break 7 and sieves above 701 charging apertures；Two discharge ports of the coal slime auxiliary discharging tee joint elephant trunk 603 of coal slime auxiliary induction system 6 are respectively placed in above two coarse crushing ribbon conveyers 502；The discharging opening of two coal spouts 706 in small, broken bits of fine break 7 is corresponding respectively to be placed in above two discharge belt conveyors 801 in small, broken bits of cloth induction system 8 in small, broken bits；The discharging opening correspondence respectively of two dusting cover coal spouts 707 of fine break 7 is placed in above two discharge belt conveyors 801 in small, broken bits；Two delivery ends of the discharging tee joint elephant trunk 805 in small, broken bits of cloth induction system 8 in small, broken bits are respectively placed in above two coal storage ribbon conveyers 901 of coal storage system 9；It is provided with compound dust-collection device 10 between the delivery end and coal storage ribbon conveyer 901 of discharging tee joint elephant trunk 805 in small, broken bits.
As shown in figure 16, compound dust-collection device 10 includes the deflector chute 1001 being located at coal storage ribbon conveyer 901 top, it is provided with return duct 1002 in the middle part of deflector chute 1001 at discharging tee joint elephant trunk 805 in small, broken bits, the delivery end of discharging tee joint elephant trunk 805 in small, broken bits is placed in deflector chute 1001, it is provided with dust-break curtain 1003 at deflector chute 1001 inner homogeneous, deflector chute 1001 makes dust energy successively decrease step by step, and a part of coal dust drops on lower floor's belt at the barrier effect of dust-break curtain 1003；During deflector chute 1001 can prevent coal dust from being dropped to lower floor's belt by upper strata belt, coal dust flies upward；Coal dust can produce downward induced air during being fallen downwards by discharging tee joint elephant trunk 805 in small, broken bits, negative pressure is produced in discharging tee joint elephant trunk 805 in small, broken bits, and in return duct 1002, produce air-flow upwards, therefore coal dust can produce circulating current in discharging tee joint elephant trunk 805 in small, broken bits and return duct 1002, until the coal dust in air-flow is fallen on lower floor's belt under gravity, it is achieved self-declining type dedusting；It is provided with sack cleaner 1004 at deflector chute 1001 end top, the inlet scoop of sack cleaner 1004 connects with deflector chute terminus inner, aspiration channel 1005 it is provided with between the inside, front end of the inlet scoop of sack cleaner 1004 and deflector chute 1001, aspiration channel 1005 one end is internal with the feed end of deflector chute 1001 to be connected, and the other end of aspiration channel 1005 connects with the inlet scoop of sack cleaner 1004；Make deflector chute 1001 feed end and discharge end dust suction simultaneously, dispersion deflector chute 1001 front end suction by sack cleaner 1004, effectively maintain the balance of induced air reflux cycle, reduce induced air air quantity and take dust quantity, preventing flour dust overflow；Be provided with the probe of anemobiagraph 1006 in deflector chute 1001 terminus inner, the outfan of anemobiagraph 1006 is connected with the input of controller 1007, and the outfan of controller 1007 is connected with the fan frequency converter 1008 of sack cleaner 1004, and controller 1007 is single-chip microcomputer；At deflector chute 1001 end, anemobiagraph 1006 is installed, it is possible to regulate the wind speed of sack cleaner 1004 according to the gas flow rate in deflector chute 1001, by whole for dust-contained airflow suction filters, prevent dust from overflowing, improve labor operation environment, it is to avoid environmental pollution, stop the waste of coal dust, reduce production cost；Overflowing along with return belt in order to avoid a small amount of coal dust, be equipped with shower nozzle 1009 in terminus inner and coal storage ribbon conveyer 901 both sides of deflector chute 1001, the shower nozzle 1009 of coal storage ribbon conveyer 901 both sides is towards the work surface of coal storage ribbon conveyer 901；Shower nozzle 1009 is all connected with water source by water pipe, is provided with spraying electromagnetic valve on water pipe.By spraying water to the non-working surface of belt, make coal storage ribbon conveyer 901 have certain humidity, prevent the dust on return belt from dissipating and overflow, avoid environmental pollution further.
Simultaneously coal slime discharging tee joint elephant trunk 103 with mix between ribbon conveyer 3, raw coal discharging tee joint elephant trunk 203 with mix between ribbon conveyer 3, between coarse crushing discharge belt conveyor 501 and coarse crushing ribbon conveyer 502, coal slime assist between discharging tee joint elephant trunk 603 and coarse crushing ribbon conveyer 502, between discharge belt conveyor in small, broken bits 801 and ribbon conveyer in small, broken bits 802, compound dust-collection device 10 can also be installed, avoid environmental pollution further.
Claims (11)
1. CFBB vast scale mixes burning coal slime coal handling system, it is characterized in that, it includes coal slime induction system, conveyer system of raw coal, two mixing ribbon conveyers, coarse crushing system, coal slime auxiliary induction system, coarse crushing cloth induction system, fine break, cloth induction system in small, broken bits, coal storage induction system, compound dust-collection devices；Two delivery ends of the coal slime discharging tee joint elephant trunk of described coal slime induction system are respectively placed in above two described mixing ribbon conveyers；Two delivery ends of the raw coal discharging tee joint elephant trunk of described conveyer system of raw coal are respectively placed in above two described mixing ribbon conveyers；The delivery end of two described mixing ribbon conveyers is corresponding respectively to be placed in above two scalping machine inlets of described coarse crushing system；The discharging opening of two coarse crushing coal spouts of described coarse crushing system is corresponding respectively to be placed in above two coarse crushing discharge belt conveyors of described coarse crushing cloth induction system；The discharging opening correspondence respectively of two scalping coal spouts of described coarse crushing system is placed in above two described coarse crushing discharge belt conveyors；The delivery end of two coarse crushing ribbon conveyers of described coarse crushing cloth induction system is respectively placed in above two remove impurity sieve charging apertures of described fine break；Two discharge ports of the coal slime auxiliary discharging tee joint elephant trunk of described coal slime auxiliary induction system are respectively placed in above two described coarse crushing ribbon conveyers；The discharging opening of two coal spouts in small, broken bits of described fine break is corresponding respectively to be placed in above two discharge belt conveyors in small, broken bits of described cloth induction system in small, broken bits；The discharging opening correspondence respectively of two dusting cover coal spouts of described fine break is placed in above two described discharge belt conveyors in small, broken bits；Two delivery ends of the discharging tee joint elephant trunk in small, broken bits of described cloth induction system in small, broken bits are respectively placed in above two coal storage ribbon conveyers of described coal storage system；It is provided with described compound dust-collection device between two delivery ends and described coal storage ribbon conveyer of described discharging tee joint elephant trunk in small, broken bits.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterized in that, described coal slime induction system includes two set coal slurry conveying equipments, and often set coal slurry conveying equipment includes ground coal bunker, vibration coal feeder, coal slime ribbon conveyer, a described coal slime discharging tee joint elephant trunk；Being provided with described vibration coal feeder below described ground coal bunker, the discharging opening of described ground coal bunker seals with the charging aperture of described vibration coal feeder and connects；The discharging opening of described vibration coal feeder is placed in the top of described coal slime ribbon conveyer；The delivery end of described coal slime ribbon conveyer is connected with the feed end of described coal slime discharging tee joint elephant trunk.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterised in that described conveyer system of raw coal includes two set raw coal conveying equipments；Often overlap described raw coal conveying equipment and include a raw coal ribbon conveyer, a spiral material separator；One described raw coal discharging tee joint elephant trunk and a foreign material conveyer belt；The delivery end of described raw coal ribbon conveyer is placed in the charging aperture of described spiral material separator；The feeding end of described foreign material conveyer belt is placed in the miscellaneous object outlet of described spiral material separator；The discharging opening of described spiral material separator is connected with the feed end of described raw coal discharging tee joint elephant trunk.
CFBB vast scale the most according to claim 3 mixes burning coal slime coal handling system, it is characterized in that, described spiral material separator includes casing and separates motor, it is externally provided with described separation motor in described casing, in described casing, level is provided with rotating shaft, and described separation motor is connected with described rotating shaft transmission；In described rotating shaft in described casing, uniform parallel arrangement is provided with some pieces of tooth plates；The sidewall that described casing is relative is respectively equipped with the described charging aperture relative with described tooth plate end face and miscellaneous object outlet；The bottom of described casing is provided with described discharging opening；It is arranged over double-edged fine-toothed comb with described foreign material conveyer belt below described tooth plate in described casing；Described rotating shaft in described casing is respectively arranged at two ends with circular end plate, and described circular end plate is placed between described tooth plate and described casing；The top of described raw coal ribbon conveyer is placed between two pieces of described circular end plate.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterised in that described coarse crushing system includes two set coarse smash equipments, often overlaps described coarse smash equipment and includes scalping machine, boulder crusher and described coarse crushing coal spout；The oversize discharging opening of described scalping machine is connected by pipeline with the charging aperture of described boulder crusher, is provided with described coarse crushing coal spout on the discharging opening of described boulder crusher, is provided with described scalping coal spout on the siftage discharging opening of described scalping machine.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterised in that described coarse crushing cloth induction system includes two described coarse crushing discharge belt conveyors that be arranged in parallel；Two described coarse crushing ribbon conveyers that be arranged in parallel；Described coarse crushing discharge belt conveyor is vertically arranged with described coarse crushing ribbon conveyer；Above two described coarse crushing discharge belt conveyors, the most up and down coarse fodder that is provided with is distributed coal plough；Coarse crushing distribution coal spout it is provided with below coarse crushing discharge belt conveyor below each described coarse fodder distribution coal plough, the discharging opening of two described coarse crushing distribution coal spouts is placed in above a described coarse crushing ribbon conveyer, and another described coarse crushing ribbon conveyer is placed in below the afterbody of two described coarse crushing discharge belt conveyors.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterized in that, described coal slime auxiliary induction system includes vibration coal feeder, coal slime auxiliary ribbon conveyer, described coal slime auxiliary discharging tee joint elephant trunk, the discharging opening of described vibration coal feeder is placed in above described coal slime auxiliary ribbon conveyer, and the charging aperture of described coal slime auxiliary discharging tee joint elephant trunk is placed in below the delivery end of described coal slime auxiliary ribbon conveyer.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterised in that described fine break includes two set fine crushing device, often overlaps described fine crushing device and includes remove impurity sieve, electric three passes, dusting cover machine, fine crusher, shunt valve；The siftage discharging opening of described remove impurity sieve connects with the charging aperture of described electric three passes；One discharging opening of described electric three passes is connected by pipeline with the charging aperture of described dusting cover machine；The oversize discharging opening of described dusting cover machine is connected by pipeline with the charging aperture of described fine crusher, and the discharging opening at described fine crusher is provided with described coal spout in small, broken bits；The siftage discharging opening of described dusting cover machine is provided with described dusting cover coal spout；Another discharging opening of described electric three passes is connected by described shunt valve with described dusting cover coal spout.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterised in that described cloth induction system in small, broken bits includes two described discharge belt conveyors in small, broken bits that be arranged in parallel；Two described ribbon conveyers in small, broken bits that be arranged in parallel；Described discharge belt conveyor in small, broken bits is vertically arranged with described ribbon conveyer in small, broken bits；Above two described discharge belt conveyors in small, broken bits, the most up and down fines that is provided with is distributed coal plough；It is provided with distribution coal spout in small, broken bits below discharge belt conveyor in small, broken bits below each described fines distribution coal plough, the discharging opening of two described distribution coal spouts in small, broken bits is placed in above a described ribbon conveyer in small, broken bits, another described ribbon conveyer in small, broken bits is placed in below the afterbody of two described discharge belt conveyors in small, broken bits, is provided with described discharging tee joint elephant trunk in small, broken bits below the delivery end of ribbon conveyer in small, broken bits every described.
CFBB vast scale the most according to claim 1 mixes burning coal slime coal handling system, it is characterized in that, described coal storage system includes two described coal storage ribbon conveyers be arrangeding in parallel and more than one coal store, described coal store is placed in below described coal storage ribbon conveyer, the most up and down above described coal storage ribbon conveyer above described coal store charging aperture it is provided with overflow-proof coal coal plough, described overflow-proof coal coal plough includes coal plough main body and main plough, main plough Middle face in described main plough both sides is the most vertically provided with a jointer, the jointer face of each described jointer and the angle α in corresponding described main plough face are 120 °-150 °.
null11. CFBB vast scales according to claim 1 mix burning coal slime coal handling system，It is characterized in that，Described compound dust-collection device includes the deflector chute being located at coal storage ribbon conveyer top，It is provided with return duct in the middle part of described discharging tee joint elephant trunk in small, broken bits with described deflector chute，The delivery end of described discharging tee joint elephant trunk in small, broken bits is placed in described deflector chute，It is provided with dust-break curtain at described deflector chute inner homogeneous，It is provided with sack cleaner at described deflector chute end top，The inlet scoop of described sack cleaner is internal with described deflector chute discharge end to be connected，It is provided with aspiration channel between the inside, front end of the inlet scoop of described sack cleaner and described deflector chute，The probe of anemobiagraph it is provided with in described deflector chute terminus inner，The outfan of described anemobiagraph is connected with the input of controller，The outfan of described controller is connected with the fan frequency converter of described sack cleaner；Being equipped with shower nozzle in terminus inner and the described coal storage ribbon conveyer both sides of described deflector chute, the described shower nozzle of described coal storage ribbon conveyer both sides is towards the work surface of described coal storage ribbon conveyer and non-working surface；Described shower nozzle is all connected with water source by water pipe, is provided with spraying electromagnetic valve on described water pipe.
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