CN111703922B - Method and device for combining low-rank coal conveying processing and coal storage system - Google Patents
Method and device for combining low-rank coal conveying processing and coal storage system Download PDFInfo
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- CN111703922B CN111703922B CN202010659688.XA CN202010659688A CN111703922B CN 111703922 B CN111703922 B CN 111703922B CN 202010659688 A CN202010659688 A CN 202010659688A CN 111703922 B CN111703922 B CN 111703922B
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- 239000003245 coal Substances 0.000 title claims abstract description 237
- 238000012545 processing Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012216 screening Methods 0.000 claims abstract description 59
- 238000003763 carbonization Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 9
- 238000007873 sieving Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 3
- 238000000197 pyrolysis Methods 0.000 abstract description 3
- 239000011335 coal coke Substances 0.000 abstract description 2
- 239000000571 coke Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/24—Unloading land vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/02—Jaw crushers or pulverisers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G27/00—Jigging conveyors
- B65G27/10—Applications of devices for generating or transmitting jigging movements
- B65G27/16—Applications of devices for generating or transmitting jigging movements of vibrators, i.e. devices for producing movements of high frequency and small amplitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/34—Devices for discharging articles or materials from conveyor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/045—Sand, soil and mineral ore
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Aviation & Aerospace Engineering (AREA)
- Disintegrating Or Milling (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a method and a device for combining a low-rank coal conveying processing and coal storage system, which belong to the field of coal coke storage and transportation of medium-low temperature pyrolysis of medium-small-scale low-rank coal, and comprise the following steps: when the granularity of the automobile coal is more than or equal to 300mm, directly unloading the automobile coal to a primary screening device for screening, and directly coarsely breaking the raw coal with the granularity of more than or equal to 300 mm; when the granularity of the coal coming from the automobile is less than 300mm, directly unloading the coal into a coal unloading pit; step two: raw coal can be sent to the raw coal fine screening and crushing system in one way, and sent to the coal storage system in the other way; step three: raw coal is processed by a fine screening and fine crushing system, and then a 10-80mm screen is fed into the vertical carbonization furnace A as qualified coal; raw coal in the storage system of the storage yard can also be sent to the fine screening and crushing system for treatment. The invention combines the raw coal conveying and processing system with the coal storage system, so as to ensure stable and continuous feeding of the subsequent vertical carbonization furnace to the maximum extent; the coal storage system shares the raw coal conveying and processing system, so that the process is simplified, the investment is reduced, and the stability of the coal for the vertical carbonization furnace is ensured.
Description
Technical Field
The invention belongs to the field of coal coke storage and transportation of medium-low temperature pyrolysis of medium-small-scale low-rank coal, and particularly relates to a method and a device for combining low-rank coal conveying processing and coal storage systems.
Background
The low-rank coal is coal in a low deterioration stage and mainly comprises lignite, long flame coal, weak caking coal, non-caking coal and the like. The low-rank coal can be subjected to fractional and quality-classifying conversion in a medium-low pyrolysis mode, and three energy products of coal gas, coal tar and semi-coke (semicoke) are obtained. The semi-coke production generally adopts an internal heating type vertical carbonization furnace, and the raw materials of the vertical carbonization furnace are required to be lump coal with a fixed specification or above due to the requirement of working environment.
Raw coal conveying processing and coal storage are feeding supply systems of vertical carbonization furnaces, and are important for maintaining stable production of furnace sets. The common feeding system process of the small and medium-sized semi-coke plants at home and abroad comprises the following steps: raw coal is directly unloaded into single or multiple coal receiving pits from an off-site automobile transportation yard, and then is conveyed to a coal screening room by a belt conveyor under the coal pits for screening, and qualified coal entering the coal screening yard is conveyed to an upright furnace group. Generally, the process is simple, equipment is less, the arrangement is compact, and the operation is convenient. However, the process requires that the granularity of the coal cannot exceed the maximum lump requirement of the coal entering the furnace, meanwhile, the coal storage of the coal yard adopts a stacking mode of automobile dumping and forklift matching, on one hand, the height of the coal is limited, the occupation area utilization rate of the coal yard is low, on the other hand, the raw coal is seriously damaged, a large amount of pulverized coal is easy to generate, the burden of a raw coal processing system is increased, the qualification rate of the raw coal is reduced, and the raw coal cost of a semi-coke plant is increased.
Disclosure of Invention
The invention aims at: aiming at the problems, the invention provides a method and a device for combining a low-rank coal conveying processing and coal storage system, which provide an economic and reasonable method for storing, taking and processing ultra-large lump coal of medium and small-scale raw coal and a stable raw coal supply device for medium and small-scale semi-coke production.
The technical scheme adopted by the invention is as follows:
a method for combining low-rank coal conveying processing and coal storage systems comprises the following steps:
Step one: when the granularity of the coal coming from the automobile is more than or equal to 300mm, the automobile can be driven to a high platform and directly discharged to the primary screening device; raw coal with the granularity more than or equal to 300mm and raw coal with the granularity less than or equal to 300mm are sieved by the primary sieving device, the tail end of the primary sieving device is connected with a receiving hopper of the coarse crushing device, raw coal with the granularity more than or equal to 300mm on the primary sieving device directly enters the coarse crushing device for coarse crushing, and ultra-large block of raw coal is crushed to the granularity less than 300mm; the raw coal after the screen blanking and coarse breaking of the primary screening device falls onto a first belt conveyor; when the granularity of the automobile coal is less than 300mm, the automobile coal can be directly discharged into a coal discharging pit, raw coal can pass through a first electrohydraulic gate valve and a first vibrating feeder below the coal discharging pit, and the raw coal falls onto a first belt conveyor;
step two: after being output from the first belt conveyor, raw coal is conveyed to a raw coal fine screening and crushing system through an electrohydraulic three-way distributor through a second belt conveyor, and the raw coal is conveyed to a coal storage system through a fifth belt conveyor;
Step three: the fine screening and fine crushing system of raw coal comprises a primary screening device and a secondary screening device; separating two kinds of mixed coals with the diameter of 80-300mm and less than 80mm by primary screening, wherein the large coal with the diameter of 80-300mm enters a fine crushing device, and is crushed and then is combined with the coal with the diameter of less than 80mm and enters secondary screening together; after secondary screening, feeding the materials with the size of 10-80mm into qualified coal, and conveying the qualified coal to an upright carbonization furnace A through a third belt conveyor; the screen offal of <10mm is sent to a pulverized coal bin through a fourth belt conveyor;
raw coal in the storage system of the storage yard can also be fed to a second belt conveyor from a second electrohydraulic gate valve and a second vibration feeder below a coal receiving pit and then sent to a fine screening and crushing system for treatment.
Preferably, the lower outlet of the pulverized coal bin is provided with an electro-hydraulic jaw gate, and the pulverized coal is connected with the outside of the loading machine or is sent to the subsequent working section B.
The utility model provides a low rank coal conveying processing and coal storage system allies oneself with device, includes raw coal conveying processing system and coal storage system, raw coal conveying processing system includes coal unloading hole, primary screening plant, first belt conveyor, sets up coarse grinding device, tee bend tripper, second belt conveyor, fifth belt conveyor, sixth belt conveyor and fine screen fine crushing system in primary screening plant below, the below of the feed opening of primary screening plant and coarse grinding device feed opening is provided with first belt conveyor, first belt conveyor tail end is provided with the tee bend tripper, the tee bend tripper below is provided with second belt conveyor and fifth belt conveyor respectively, the second belt conveyor below is provided with fine screen fine crushing system, fifth belt conveyor below is provided with coal storage system, coal storage system below is provided with sixth belt conveyor.
Preferably, the fine screening and crushing system sequentially comprises a primary vibrating screen, a double-toothed roller crusher, a secondary vibrating screen, a third belt conveyor and a fourth belt conveyor, wherein a pulverized coal bin is arranged at the tail end of the fourth belt conveyor.
Preferably, the tail end of the third belt conveyor is provided with an upright carbonization furnace A.
Preferably, an electro-hydraulic jaw gate is arranged at the outlet of the pulverized coal bin.
Preferably, the coal storage system comprises a raw coal storage yard arranged below the fifth belt conveyor, a coal receiving pit, a second electrohydraulic gate valve arranged at an outlet of the coal receiving pit and a second vibrating feeder arranged below the second electrohydraulic gate valve, wherein the discharged material of the second vibrating feeder flows into the sixth belt conveyor.
Preferably, a first electro-hydraulic gate valve is arranged at the outlet of the coal unloading pit, a first vibrating feeder is arranged below the first electro-hydraulic gate valve, and the discharged material of the first vibrating feeder flows into the first belt conveyor.
Preferably, the primary screening device is a fixed sliding screen, the installation angle of the fixed sliding screen is 40-55 degrees, the width of the fixed sliding screen is 2.5-3.5 times of the length of the fixed sliding screen, a grid section screen is arranged in the fixed sliding screen, and the grid section screen is trapezoid in shape.
Preferably, the coarse crushing device is a jaw crusher.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention combines direct processing and use of the coal with storage and taking of a coal yard (namely, the combination of a raw coal conveying and processing system and a coal storage system), thereby ensuring stable and continuous feeding of a subsequent vertical carbonization furnace to the maximum extent; the coal storage system shares the coarse crushing device, the primary screening device and the fine screening and fine crushing system for raw coal conveying processing, so that the process is simplified, the investment is reduced, and meanwhile, the stability of the coal for the vertical carbonization furnace is ensured.
(2) The fixed sliding screen adopted by the invention has larger screen surface width, can meet the unloading requirement of the dump truck, has larger effective length of the screen surface which is about 3 times of the width, is installed at a large angle (more than 40 ℃), adopts a trapezoid section with wide upper part and narrow lower part, has simple integral structure, does not consume power, is ideal in screening efficiency as a primary screen, and can save the construction cost of a high platform by combining favorable topography;
(3) According to the invention, the coal is discharged from the coal receiving pit and the coal is discharged from the high platform, wherein the high platform is correspondingly provided with the fixed sliding screen, the side screen frame of the sliding screen is heightened and reinforced to prevent side overflow, and the receiving hopper of the crusher at the tail end of the sliding screen is heightened and reinforced to resist the impact of tail end material flow; the coal receiving pit receives coal with the feed less than 300mm, and the requirements of different coals can be met by adopting the coal receiving pit for coal unloading and the high-stage coal unloading; the two coal unloading modes are arranged separately, so that the processing capacity of the device can be saved, the equipment type selection is degraded, the equipment capital investment is saved, and the system is more beneficial to stable operation, equipment inspection and maintenance and civil engineering matching;
(4) The jaw crusher selected by the invention can process 1.2m ultra-large coal at maximum, and has wider range of adapting to coal; the double-toothed-roller crusher can adjust the distance between toothed rollers, so that the crushing rate is reduced to the maximum extent, and the lump coal occupation ratio within 80mm is ensured;
Drawings
FIG. 1 is a schematic diagram of a coal handling and storage system for low rank coal according to the present invention;
Marked in the figure as: 1-fixed slide sieve, 2-jaw crusher, 3-first belt conveyor, 4-coal unloading pit, 5-first electrohydraulic gate valve, 6-first vibration feeder, 7-tee distributor, 8-second belt conveyor, 9-primary vibrating sieve, 10-double-toothed roller crusher, 11-secondary vibrating sieve, 12-third belt conveyor, 13-fourth belt conveyor, 14-pulverized coal bunker, 15-electrohydraulic jaw gate, 16-fifth belt conveyor, 17-raw coal storage yard, 18-coal receiving pit, 19-second electrohydraulic gate valve, 20-second vibration feeder, 21-sixth belt conveyor, 22-coal storage system, 23-high table, 24-vertical carbonization furnace A, 25-subsequent section B.
Detailed Description
The present invention will be described in further detail in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention.
Example 1
The invention combines direct processing and use of the coal with storage and taking of a coal yard (namely, the combination of a raw coal conveying and processing system and a coal storage system 22), thereby ensuring stable and continuous feeding of a subsequent vertical carbonization furnace to the maximum extent; the coal storage system 22 shares a coarse crushing device, a primary screening device and a fine screening and fine crushing system for raw coal conveying processing, so that the process is simplified, the investment is reduced, and meanwhile, the stability of the coal for the vertical carbonization furnace is ensured. A method for combining low-rank coal conveying processing and coal storage systems comprises the following specific steps:
Step one: when the granularity of the coal coming from the automobile is more than or equal to 300mm, the automobile can be driven onto the high platform 23 and directly discharged onto the primary screening device; raw coal with the granularity more than or equal to 300mm and raw coal with the granularity less than 300mm are sieved by the primary sieving device, the tail end of the primary sieving device is connected with a receiving hopper of the coarse crushing device, raw coal with the granularity more than or equal to 300mm on the sieve directly enters the coarse crushing device for coarse crushing, and oversized raw coal is crushed to the granularity less than 300mm; raw coal after the primary screening device screen blanking and coarse breaking falls to a first belt conveyor 3; when the granularity of the coal coming from the automobile is less than 300mm, the coal can be directly discharged into the coal discharging pit 4, and the raw coal falls onto the first belt conveyor 3 through the first electro-hydraulic gate valve 5 and the first vibration feeder 6 under the coal discharging pit 4;
Step two: after being output from the first belt conveyor 3, raw coal is sent to a raw coal fine screening and crushing system through an electrohydraulic three-way distributor 7, one path of raw coal is sent to a raw coal storage yard 17 through a second belt conveyor 8, and the other path of raw coal is sent to a raw coal storage yard 16 through a fifth belt conveyor 16;
step three: the fine screening and fine crushing system of raw coal comprises primary screening, fine crushing and secondary screening; two kinds of mixed coals with the diameter of 80-300mm and the diameter of less than 80mm are sieved out once, wherein, large coals with the diameter of 80-300mm enter a double-toothed roller crusher 10, and are crushed and then are combined with coals with the diameter of less than 80mm and enter secondary sieving together; after secondary screening, the 10-80mm screen material is qualified into the furnace coal, and the qualified coal is sent to an upright carbonization furnace A24 through a third belt conveyor 12; the screen reject of <10mm is sent to a pulverized coal bin 14 by a fourth belt conveyor 13; raw coal of a storage yard coal storage system 22 can be fed to the second belt conveyor 8 from a second electrohydraulic gate valve 19 and a second vibration feeder 20 below the coal receiving pit 18 and sent to a raw coal crushing and screening chamber.
Further, an electro-hydraulic jaw gate 15 is arranged at the lower outlet of the pulverized coal bin 14, and the pulverized coal is connected to the outside of a truck for transportation or sent to a subsequent working section B25; raw coal is discharged to a raw coal storage yard 17 by an overhead belt conveyor (a fifth belt conveyor 16) with a discharging car, and the raw coal is discharged by a discharging car to travel back and forth;
Example 2
In order to ensure stable and continuous feeding of the subsequent vertical carbonization furnace to the maximum extent, the process is simplified, the investment is reduced, and meanwhile, the stability of the coal for the vertical carbonization furnace is ensured. The invention provides a combined device of a low-rank coal conveying processing system and a coal storage system, which comprises a raw coal conveying processing system and a coal storage system 22, wherein the raw coal conveying processing system comprises a coal unloading pit 4, a primary screening device, a first belt conveyor 3, a coarse crushing device, a three-way distributor 7, a second belt conveyor 8, a fifth belt conveyor 16, a sixth belt conveyor 21 and a fine screening fine crushing system which are arranged below the primary screening device, the first belt conveyor 3 is arranged below a feed opening of the primary screening device and a feed opening of the coarse crushing device, the three-way distributor 7 is arranged at the tail end of the first belt conveyor 3, the second belt conveyor 8 and the fifth belt conveyor 16 are respectively arranged below the three-way distributor 7, the fine screening fine crushing system is arranged below the second belt conveyor 8, the coal storage system 22 is arranged below the fifth belt conveyor 16, and the sixth belt conveyor 21 is arranged below the coal storage system 22.
Example 3
On the basis of the embodiment 1, further, the fine screening and crushing system sequentially comprises a primary vibrating screen 9, a double-toothed roller crusher 10, a secondary vibrating screen 11, a third belt conveyor 12 and a fourth belt conveyor 13, wherein the tail end of the fourth belt conveyor 13 is provided with a pulverized coal bin 14.
Example 4
Further on the basis of embodiment 2, the tail end of the third belt conveyor 12 is provided with an upstanding carbonization furnace a24. Further, an electro-hydraulic jaw gate 15 is arranged at the outlet of the pulverized coal bin 14.
Example 5
Further, on the basis of embodiment 1, the coal storage system 22 includes a raw coal yard 17 disposed below the fifth belt conveyor 16, a coal receiving pit 18, a second electro-hydraulic gate valve 19 disposed at an outlet of the coal receiving pit 18, and a second vibratory feeder 20 disposed below the second electro-hydraulic gate valve 19, wherein a discharge of the second vibratory feeder 20 flows into the sixth belt conveyor 21.
Example 6
On the basis of embodiment 1, further, a first electro-hydraulic gate valve 5 is arranged at the outlet of the coal unloading pit 4, a first vibrating feeder 6 is arranged below the first electro-hydraulic gate valve 5, and the discharged material of the first vibrating feeder 6 flows into the first belt conveyor 3.
Example 7
On the basis of the embodiment 1, further, the primary screening device is a fixed sliding screen 1, the installation angle of the fixed sliding screen 1 is 40-55 degrees, the width of the fixed sliding screen 1 is 2.5-3.5 times of the length, and a grid screen is arranged in the fixed sliding screen 1 and is trapezoid. Further, on the basis of embodiment 1, the coarse crushing device is a coarse crushing device.
The above examples merely illustrate specific embodiments of the application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the technical idea of the application, which fall within the scope of protection of the application.
Claims (7)
1. The method for combining the low-rank coal conveying processing and coal storage system is characterized by comprising the following steps of:
Step one: when the granularity of the automobile coal is more than or equal to 300mm, directly unloading the automobile coal to a primary screening device; raw coal with the granularity more than or equal to 300mm and raw coal with the granularity less than or equal to 300mm are sieved by the primary sieving device, the tail end of the primary sieving device is connected with a receiving hopper of the coarse crushing device, raw coal with the granularity more than or equal to 300mm on the primary sieving device directly enters the coarse crushing device for coarse crushing, and ultra-large block of raw coal is crushed to the granularity less than 300mm; the raw coal after the screen blanking and coarse breaking of the primary screening device falls onto a first belt conveyor (3); when the granularity of the coal coming from the automobile is less than 300mm, the raw coal can be directly discharged into a coal discharging pit (4), and the raw coal can fall onto a first belt conveyor (3) through a first electrohydraulic gate valve (5) and a first vibrating feeder (6) under the coal discharging pit (4);
Step two: after being output from the first belt conveyor (3), raw coal is sent to a raw coal fine screening and crushing system through an electro-hydraulic three-way distributor (7), one path of raw coal is sent to a coal storage system (22) through a second belt conveyor (8), and the other path of raw coal is sent to a fifth belt conveyor (16);
Step three: the fine screening and fine crushing system of raw coal comprises a primary screening device and a secondary screening device; separating two kinds of mixed coals with the diameter of 80-300mm and less than 80mm by primary screening, wherein the large coal with the diameter of 80-300mm enters a fine crushing device, and is crushed and then is combined with the coal with the diameter of less than 80mm and enters secondary screening together; after secondary screening, feeding the materials with the size of 10-80mm into qualified coal, and conveying the qualified coal to an upright carbonization furnace A (24) through a third belt conveyor (12); the screen offal of <10mm is sent to a pulverized coal bin (14) through a fourth belt conveyor (13);
Raw coal in the storage system (22) of the storage yard can also be fed to the second belt conveyor (8) from the second electrohydraulic gate valve (19) and the second vibration feeder (20) under the coal receiving pit (18) to be sent to the fine screening and crushing system for treatment.
2. The method for combining low-rank coal conveying processing and coal storage system according to claim 1, wherein,
The lower outlet of the pulverized coal bin (14) is provided with an electro-hydraulic jaw gate (15), and the pulverized coal is loaded and transported to the outside or to a subsequent working section B (25).
3. The low-rank coal conveying processing and coal storage system combined device based on the method for combining the low-rank coal conveying processing and coal storage system according to claim 1 is characterized by comprising a raw coal conveying processing system and a coal storage system (22), wherein the raw coal conveying processing system comprises a coal unloading pit (4), a primary screening device, a first belt conveyor (3), a coarse crushing device, a three-way distributor (7), a second belt conveyor (8), a fifth belt conveyor (16), a sixth belt conveyor (21) and a fine screening fine crushing system, a first belt conveyor (3) is arranged below a feed opening of the primary screening device and a feed opening of the coarse crushing device, a three-way distributor (7) is arranged at the tail end of the first belt conveyor (3), a second belt conveyor (8) and a fifth belt conveyor (16) are respectively arranged below the three-way distributor (7), a fine screening belt conveyor (21) is arranged below the second belt conveyor (8), and a fine coal storage system (22) is arranged below the fifth belt conveyor (16);
The fine screening and crushing system sequentially comprises a primary vibrating screen (9), a double-toothed roller crusher (10), a secondary vibrating screen (11), a third belt conveyor (12) and a fourth belt conveyor (13), wherein a pulverized coal bin (14) is arranged at the tail end of the fourth belt conveyor (13);
The tail end of the third belt conveyor (12) is provided with an upright carbonization furnace A (24);
the coal storage system (22) comprises a raw coal storage yard (17) arranged below the fifth belt conveyor (16), a coal receiving pit (18), a second electro-hydraulic gate valve (19) arranged at the outlet of the coal receiving pit (18) and a second vibrating feeder (20) arranged below the second electro-hydraulic gate valve (19), wherein the discharged material of the second vibrating feeder (20) flows into the sixth belt conveyor (21).
4. A combination device for low-rank coal conveying processing and coal storage system according to claim 3, wherein an electro-hydraulic jaw gate (15) is arranged at the outlet of the pulverized coal bin (14).
5. The combination device of the low-rank coal conveying processing and coal storage system according to claim 3, wherein a first electrohydraulic gate valve (5) is arranged at the outlet of the coal unloading pit (4), a first vibrating feeder (6) is arranged below the first electrohydraulic gate valve (5), and the discharged material of the first vibrating feeder (6) flows into the first belt conveyor (3).
6. The combination device of the low-rank coal conveying processing and coal storage system according to claim 3, wherein the primary screening device is a fixed sliding screen (1), the installation angle of the fixed sliding screen (1) is 40-55 degrees, the width of the fixed sliding screen (1) is 2.5-3.5 times of the length, a grate screen is arranged in the fixed sliding screen (1), and the grate screen is trapezoid.
7. A combination low rank coal conveying processing and coal storage system as claimed in claim 3, wherein the coarse crushing device is a jaw crusher (2).
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955824A (en) * | 2010-09-06 | 2011-01-26 | 江苏秋林重工股份有限公司 | Complete two-stage slurry production equipment of water-coal-slurry and gasified water-coal-slurry by using low-rank coal fuel |
| CN204892084U (en) * | 2015-08-28 | 2015-12-23 | 中国电力工程顾问集团西北电力设计院有限公司 | Coal conveying system's tertiary screening system |
| CN206544998U (en) * | 2016-11-10 | 2017-10-10 | 神雾环保技术股份有限公司 | The system for handling low-order coal |
| CN107362896A (en) * | 2017-08-31 | 2017-11-21 | 陕西冶金设计研究院有限公司 | A kind of technological process of production and equipment of railway superfine rubble railway ballast |
| CN108855546A (en) * | 2018-07-12 | 2018-11-23 | 河南省振源科技有限公司 | Outdoor coal crushing sieve classification production system |
| CN110358556A (en) * | 2019-07-25 | 2019-10-22 | 内蒙古万众炜业科技环保股份公司 | A kind of raw coal cracking energy comprehensive utilization system |
| CN212355794U (en) * | 2020-07-09 | 2021-01-15 | 陕西冶金设计研究院有限公司 | Low order coal is carried processing and is stored up coal system and unite and use device |
-
2020
- 2020-07-09 CN CN202010659688.XA patent/CN111703922B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955824A (en) * | 2010-09-06 | 2011-01-26 | 江苏秋林重工股份有限公司 | Complete two-stage slurry production equipment of water-coal-slurry and gasified water-coal-slurry by using low-rank coal fuel |
| CN204892084U (en) * | 2015-08-28 | 2015-12-23 | 中国电力工程顾问集团西北电力设计院有限公司 | Coal conveying system's tertiary screening system |
| CN206544998U (en) * | 2016-11-10 | 2017-10-10 | 神雾环保技术股份有限公司 | The system for handling low-order coal |
| CN107362896A (en) * | 2017-08-31 | 2017-11-21 | 陕西冶金设计研究院有限公司 | A kind of technological process of production and equipment of railway superfine rubble railway ballast |
| CN108855546A (en) * | 2018-07-12 | 2018-11-23 | 河南省振源科技有限公司 | Outdoor coal crushing sieve classification production system |
| CN110358556A (en) * | 2019-07-25 | 2019-10-22 | 内蒙古万众炜业科技环保股份公司 | A kind of raw coal cracking energy comprehensive utilization system |
| CN212355794U (en) * | 2020-07-09 | 2021-01-15 | 陕西冶金设计研究院有限公司 | Low order coal is carried processing and is stored up coal system and unite and use device |
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