CN204555552U - A kind of coal slime drying system - Google Patents

Abstract

The utility model discloses a coal slime drying system, aiming at providing a coal slime drying system with high drying quality and high efficiency. It includes filter press, coal slime scraper conveyor, feeding bucket elevator, first feeding scraper conveyor, coal slime buffer bin, feeding screw conveyor, second feeding scraper conveyor, drying device , spoiler valve, cyclone dust collector, bag filter, first induced draft fan, second induced draft fan, first desulfurization tower, chimney, first screw conveyor, second screw conveyor, third screw conveyor, dust recovery warehouse, electric feeder, granulator, finished product belt conveyor, finished product bucket elevator, three-way distributing valve, finished product reloading belt conveyor, finished product buffer warehouse, finished product electric feeder, coal-fired scraper conveyor, Coal-fired bunker, coal-fired feeder, thermal device, bypass valve, water curtain dust collector, safety valve, second blower, first blower, slag remover, slag bucket elevator, slag bin, workshop dust collector , the second desulfurization tower and the gas collecting hood.

Description

A coal slime drying system

technical field

The utility model relates to the technical field of coal slime drying treatment equipment, in particular to a coal slime drying system.

Background technique

At present, there are many domestic drying processes and equipment. In the field of coal slime drying in the coal industry, there are three major categories: coal slime drum drying process, tunnel drying process (including flap dryer and mesh belt dryer) and airflow drying process.

Drum dryer is one of the earliest drying equipment. It is not only used for drying coal, but also widely used in metallurgy, building materials, chemical industry and other fields. The disadvantage of the drum drying process machine is that the drying temperature of this type of drying process is above 700 ° C, and the oxygen content in the drying process cannot be effectively controlled. Far higher than the ignition point of lignite and long-flame coal at 278°C, it is not suitable for drying lignite and long-flame coal slime.

The tunnel drying process is suitable for drying block and strip materials. There are flap device and metal mesh belt device. After the slime is extruded into strips, it can be dried on the metal mesh belt dryer. The disadvantage of this drying process is that it is not suitable for drying bulk coal slime, and the drying efficiency is low.

The airflow drying process uses the heating medium (hot air, flue gas, etc.) to directly contact the wet material particles, and makes the solid particles suspend in the heating medium fluid, which strengthens the mass transfer and heat transfer process. Applied to the drying of bulk materials. To dry the coal slime in the coal industry, it must be "granulated" or "formed" first. The disadvantage of this drying process is that the industrial practice of drying coal slime is not effective, and generally this process is not used to dry coal slime.

Utility model content

The utility model overcomes the shortcomings of the prior art and provides a coal slime drying system with high drying quality and high efficiency.

In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

A coal slime drying system, including a filter press, a coal slime scraper conveyor, a coal slime belt conveyor, a feeding bucket elevator, a first feeding scraper conveyor, a coal slime buffer bin, and a feeding screw conveyor , the second feeding scraper conveyor, feeding air locker, drying device, spoiler valve, cyclone dust collector, bag filter, first induced draft fan, second induced draft fan, first desulfurization tower, chimney, first Air locker, second air locker, first screw conveyor, second screw conveyor, third screw conveyor, recycling dust bin, electric feeder, granulator, finished product belt conveyor, finished product bucket elevator , three-way distribution valve, finished product transfer belt conveyor, finished product buffer warehouse, finished product electric feeder, coal-fired scraper conveyor, coal-fired bin, coal-fired feeder, thermal device, bypass valve, water curtain dust removal device, safety valve, second blower, first blower, slag remover, slag removal belt conveyor, slag discharge bucket elevator, slag bin, workshop dust collector, second desulfurization tower and gas collection hood;

The outlet of the filter press is connected to the inlet of the feeding bucket elevator through the coal slime scraper conveyor and the coal slime belt conveyor; the outlet of the feeding bucket elevator is connected to the coal slime through the first feeding scraper conveyor buffer bin; the discharge port of the coal slime buffer bin is connected to the feed port of the drying device through a feeding screw conveyor and a second feeding scraper conveyor; mouth; the spoiler valve is arranged at the air outlet of the drying device; the discharge port of the drying device is connected to the finished product belt conveyor; the air outlet of the drying device is connected to the inlet of the cyclone dust collector through a pipeline; the cyclone The first air lock is set at the material outlet of the dust collector, and the finished product belt conveyor is connected through the first screw conveyor; the air outlet of the cyclone dust collector is connected to the inlet of the bag filter through a pipeline; the material of the bag filter A second air lock is installed at the exit, and is connected to the recovery dust bin through a second screw conveyor; the bag filter is connected to the inlet of the first induced draft fan through a pipeline; the outlet of the first induced draft fan is connected to the first desulfurization The inlet of the tower; the outlet of the first desulfurization tower communicates with the chimney through a pipeline; the dust collector of the workshop is connected with the inlet of the second induced draft fan; the outlet of the second induced draft fan is communicated with the chimney; the second induced draft fan The inlet of the second desulfurization tower is connected to the outlet of the second desulfurization tower through a pipeline; the inlet of the second desulfurization tower is connected to the gas collection hood through a pipeline; the outlet of the dust collector in the workshop is connected to the recovery dust bin through the third screw conveyor; An electric feeder is installed at the outlet of the recovery dust bin, and is connected with the inlet of the granulator; the outlet of the granulator is connected with the finished product belt conveyor; the discharge end of the finished product belt conveyor is connected with the finished product bucket elevator The outlet of the finished product bucket elevator is provided with a three-way distributing valve; one outlet of the three-way distributing valve is connected to the finished product buffer warehouse through the finished product transfer belt conveyor; the finished product electric feeder is set on the finished product at the discharge port of the buffer bin; the other outlet of the three-way distribution valve is connected to the coal-fired bunker through a coal-fired scraper conveyor; a coal-fired feeder is set at the discharge port of the coal-fired bunker, and The feed port of the thermal energy device is connected; the thermal energy device is provided with a first blower and a second blower; the hot flue gas outlet of the thermal energy device is connected to the air inlet of the drying device through a pipeline; the hot flue gas of the thermal energy device The outlet is connected to the water curtain dust collector through a pipeline to form a bypass, and a bypass valve is set at the connection between the bypass and the hot flue gas outlet of the thermal energy device; the gas outlet of the water curtain dust collector is connected to the chimney through a pipeline, and A safety valve is set; a slag remover is installed at the slag outlet of the thermal energy device; the outlet of the slag remover is connected to the entrance of the slag discharge bucket elevator through a slag removal belt conveyor; the outlet of the slag discharge bucket elevator is connected to The slag bin; the gas collecting hood is arranged above the slag remover.

Preferably, the drying device is provided with an oxygen meter.

Preferably, the bag filter is provided with a temperature measuring instrument.

Preferably, the drying device includes a base, a sealed housing mounted on the base, two rotating shafts that are parallel to each other, rotatably arranged on the base and pass through the lower part of the housing, and a geared motor that drives and connects the rotating shafts; The upper part of one end of the casing is provided with a feed air locker and an air inlet pipe, the lower part of the other end is provided with a discharge air locker, and the upper part is provided with an air outlet; the shaft is provided with a plurality of copying boards in a certain form; The lower part of the housing is two parallel arc-shaped bottom shells, two rotating shafts are respectively arranged above the two bottom shells and the two axes are parallel, and the copying board on the rotating shaft is close to the bottom wall of the bottom shell; The top wall in the housing is provided with an upper baffle plate extending downward, and the bottom wall is provided with a lower baffle plate extending upward, and the upper baffle plate and the lower baffle plate are arranged alternately; the material inlet of the discharge air locker The part is higher than the copy board on the rotating shaft.

Preferably, an explosion-proof door is provided on the upper part of the housing.

Preferably, the copying board includes a web fixedly connected to the rotating shaft and whose surface is parallel to the section of the rotating shaft, and a lifting plate fixedly connected to the end of the web and whose surface coincides with the axis of the rotating shaft.

Preferably, the copying board includes a web fixedly connected to the rotating shaft and whose surface is parallel to the section of the rotating shaft, and a lifting plate fixedly connected to the end of the web and whose surface coincides with the axis of the rotating shaft.

Preferably, the end of the lifting plate is provided with a wear strip.

Preferably, the webs are arranged symmetrically in pairs, and are fixedly connected to the rotating shaft through two semicircular hoops.

Compared with the prior art, the utility model has the following advantages:

1) The drying material of this utility model has a wide application range, high drying quality and efficiency, adopts hot flue gas to directly contact the material to be dried, has sufficient heat exchange, good drying effect, strong one-time precipitation ability, high output, and a single set of equipment can reach 40-60t/h. And it occupies a small area, and the investment cost is low.

2) The utility model uses the dried coal to provide heat, so there is no need to apply special coal. The oxygen content of the drying system can be monitored online, which is safe and reliable.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the utility model.

Fig. 3 is a sectional view of A-A in Fig. 2 .

Fig. 4 is a structural schematic diagram of the copying board installed on the rotating shaft in Fig. 2 .

Fig. 5 is a left side view of Fig. 2 .

In the figure: 1—filter press; 2—coal slime scraper conveyor; 3—coal slime belt conveyor; 4—feeding bucket elevator; 5—first feeding scraper conveyor; 6—coal slime buffer Bin; 7—feeding screw conveyor; 8—second feeding scraper conveyor; 9—feeding air locker; 10—drying device; 11—spoiler valve; 12—cyclone dust collector; 13—bag dust collector 14a—first induced draft fan; 14b—second induced draft fan; 15—first desulfurization tower; 16—chimney; 17a—first air locker; 17b—second air locker; 18a first screw conveyor; 18b—second screw conveyor; 18c third screw conveyor; 19—recovery dust bin; 20—electric feeder; 21—granulator; 22—finished product belt conveyor; 23—finished product bucket elevator; 24— Three-way distributing valve; 25—finished product transfer belt conveyor; 26—finished product buffer warehouse; 27—finished product electric feeder; 28—coal-fired scraper conveyor; 29—coal-fired bunker; 30—coal-fired feeder ; 31—heat energy device; 32—bypass valve; 33—water curtain dust collector; 34—safety valve; 35—second blower; 36—first blower; 37—slagging machine; 38—slagging belt conveyor; 39—slag bucket elevator; 40—slag bin; 41—automobile; 42—dust collector in workshop; 43—second desulfurization tower; 44—gathering hood; 45—oxygen meter; 46—thermometer; 51 —base; 52—housing; 53—rotating shaft; 54—reduction motor; 55—feed air locker; 56—inlet air pipe; —upper baffle; 61—lower baffle; 62—material inlet part of discharge air locker; 63—explosion-proof door; 64—air outlet; 81—width plate; 82—lifting plate; 83—wear-resistant strip; 84—Hoop.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The coal slime drying system shown in Fig. 1 includes a filter press 1, a coal slime scraper conveyor 2, a coal slime belt conveyor 3, a feeding bucket elevator 4, a first feeding scraper conveyor 5, a coal slime Buffer bin 6, feeding screw conveyor 7, second feeding scraper conveyor 8, feeding air locker 9, drying device 10, spoiler valve 11, cyclone dust collector 12, bag dust collector 13, first suction Fan 14a, second induced draft fan 14b, first desulfurization tower 15, chimney 16, first air lock 17a, second air lock 17b, first screw conveyor 18a, second screw conveyor 18b, third screw conveyor machine 18c, recovery dust bin 19, electric feeder 20, granulator 21, finished product belt conveyor 22, finished product bucket elevator 23, three-way distributing valve 24, finished product transfer belt conveyor 25, finished product buffer warehouse 26, Finished product electric feeder 27, coal-fired scraper conveyor 28, coal-fired bin 29, coal-fired feeder 30, thermal energy device 31, bypass valve 32, water curtain dust collector 33, safety valve 34, second blower 35 , the first blower 36, the slag remover 37, the slag removal belt conveyor 38, the slag discharge bucket elevator 39, the slag bin 40, the workshop dust collector 42, the second desulfurization tower 43 and the gas collection hood 44;

The outlet of the filter press 1 is connected to the inlet of the feeding hopper elevator 4 through the coal slime scraper conveyor 2 and the coal slime belt conveyor 3; the outlet of the feeding bucket elevator 4 passes through the first feeding scraper Conveyor 5 connects coal slime buffer bin 6; The discharge port of described coal slime buffer bin 6 is connected the feed port of drying device 10 by feeding screw conveyor 7 and the second feeding scraper conveyor 8; The material air locker 9 is arranged at the feed inlet of the drying device 10; the spoiler valve 11 is arranged at the air outlet of the drying device 10; the discharge port of the drying device 10 is connected to the finished product belt conveyor 22; The air outlet of drying device 10 is connected to the inlet of cyclone dust collector 12 by pipeline; The material outlet of described cyclone dust collector 12 is provided with the first wind locker 17a, and is connected with finished product belt conveyor 22 by the first screw conveyor 18a; The air outlet of the cyclone dust collector 12 is connected to the inlet of the bag filter 13 through a pipeline; the second air lock 17b is arranged at the material outlet of the bag filter 13, and the recovery dust bin 19 is connected through the second screw conveyor 18b; The bag filter 13 is connected to the inlet of the first induced draft fan 14a through a pipeline; the outlet of the first induced draft fan 14a is connected to the inlet of the first desulfurization tower 15 through a pipeline; the outlet of the first desulfurization tower 15 is connected to the chimney through a pipeline 16; the workshop dust collector 42 is connected to the inlet of the second induced draft fan 14b; the outlet of the second induced draft fan 14b is communicated with the chimney 16; the inlet of the second induced draft fan 14b is connected to the second desulfurization tower 43 through a pipeline The outlet of the second desulfurization tower 43 is connected to the gas collection hood 44 through a pipeline; the outlet of the workshop dust collector 42 is connected to the recovery dust bin 19 through the third screw conveyor 18c; the recovery dust bin 19 An electric feeder 20 is set at the outlet of the granulator, and is connected with the inlet of the granulator 21; the outlet of the granulator 21 is connected with the finished product belt conveyor 22; the discharge end of the finished product belt conveyor 22 is connected with the finished product hopper The inlet of elevator 23 is connected; the outlet of described finished product bucket elevator 23 is provided with three-way distributing valve 24; An outlet of described three-way distributing valve 24 is connected finished product buffer storehouse 26 by finished product reloading belt conveyor 25; The finished product electric feeder 27 is arranged at the discharge port of the finished product buffer bin 26; the other outlet of the three-way distributing valve 24 is connected to the coal-fired bunker 29 through the coal-fired scraper conveyor 28; the coal-fired bin 29 A coal-fired feeder 30 is set at the discharge port of the fuel tank, and communicates with the feed port of the thermal energy device 31; the thermal energy device 31 is provided with a first blower 36 and a second blower 35; the hot smoke of the thermal energy device 31 Gas outlet connects the air inlet of drying device 10 through pipeline; The connection is provided with a bypass valve 32; the air outlet of the water curtain dust collector 33 is connected to the chimney 16 through a pipeline, and a safety valve 34 is provided on the pipeline; a slag remover 37 is provided at the slag outlet of the thermal energy device 31; The outlet of the slag remover 37 passes through the slag remover The belt conveyor 38 is connected to the entrance of the slag discharge bucket elevator 39; the exit of the slag discharge bucket elevator 39 is connected to the slag bin 40;

Wherein, the drying device 10 is provided with an oxygen meter 45 . The bag filter 13 is provided with a temperature measuring instrument 46 .

As shown in Figures 2-5, the drying device 10 includes a base 51, a sealed housing 52 mounted on the base 51, and two rotating shafts 53 that are parallel to each other, are rotatably arranged on the base 51 and pass through the lower part of the housing 52 , and drive the reduction motor 54 connected to the rotating shaft 53; the upper part of one end of the housing 52 is provided with a feed air locker 55 and an air inlet pipe 56, the lower part of the other end is provided with a discharge air locker 57, and the upper part is provided with an outlet air locker. tuyere 64; the rotating shaft 53 is provided with a plurality of copying boards 80 in a certain form; the lower part of the housing 52 is two parallel arc-shaped bottom shells 59, and the two rotating shafts 53 are respectively arranged on the two bottoms. Above the shell 59 and the two axes are parallel, the copying plate 80 on the rotating shaft 53 is close to the bottom wall of the bottom shell 59; the top wall in the shell 52 is provided with an upper baffle plate 60 extending downward, and the bottom wall is provided with There is a lower baffle plate 61 extending upward, and the upper baffle plate 60 and the lower baffle plate 61 are alternately arranged; the material inlet part 62 of the discharge air locker 57 is higher than the outer edge of the copying plate 80 on the rotating shaft 53 .

Wherein, the upper part of the casing 52 is provided with an explosion-proof door 63 . The copying plate 80 includes a web 81 fixedly connected to the rotating shaft 53 and whose surface is parallel to the section of the rotating shaft 53 , and a lifting plate 82 fixedly connected to the end of the web 81 and whose surface coincides with the axis of the rotating shaft 53 . The end of the lifting plate 82 is provided with a wear strip 83 . The webs 81 are symmetrically arranged in pairs, and are fixedly connected to the rotating shaft 53 through two semicircular hoops 84 .

When using the drying device 10 to dry the coal slime, the two parallel rotating shafts rotate in reverse during operation, driving the copying plate to rotate and throw the coal slime material outside, and the speed of the rotating shaft can be adjusted by a frequency converter to adjust the speed of the coal slime material in the shell. Sprinkle speed, and then adjust the temperature of the hot flue gas in the heat exchange process and the internal oxygen content. In the actual production process, it also cooperates with the wind pressure of the induced draft fan, which can improve the heat exchange efficiency of the material in the cavity space, reduce the resistance of the material during the dissolution or polymerization process along the motion curve, and further achieve the control of the moisture content of the material drying and save energy consumption. , to achieve the controllability of product quality.

The material movement speed of the drying device 10 is fast, and the upward throwing of the coal slime material is realized through the copying board, and the heat exchange with the hot air is sufficient. The hot air and the material flow form an S-shaped direction through the upper baffle and the lower baffle, and the exchange efficiency is high. , low energy consumption; at the same time, the upper baffle and the lower baffle divide the shell into multiple positions. Only when the particle size and dry humidity reach a certain level can they enter the latter position. Materials with large particle size and high humidity are due to their heavy weight. , unable to move with the hot air into the next position, continue to fall into the current position and be stirred by the copying plate to achieve upward throwing, and realize the continuous crushing of large particles of coal slime. The crushing is caused by the impact of the copying plate, upper baffle and particles And the edge impact of the web (rotary impact cutting) is jointly realized, and finally reaches the discharge air lock after the transition of multiple positions to ensure that the particle size of the finished product is uniform and the humidity meets the requirements. At the same time, by controlling the oxygen content of the hot air entering the air inlet pipe, the oxygen content inside the shell can be effectively controlled during drying, so that no explosion will occur even under high temperature and high dust working conditions, and the safety is extremely high; materials The water content is well controlled, and the particle size of the material is uniform, which effectively guarantees the quality of the dried product.

work process:

The coal slime water in the coal washing plant is pressed into a coal slime with a water content of 28%-35% by the filter press 1. Through the slime scraper conveyor 2, the slime belt conveyor 3 is transferred to the feed bucket elevator 4. The feeding bucket elevator 4 lifts the coal slime into the first feeding scraper conveyor 5, and then transfers it to the coal slime buffer bin 6 through the first feeding scraper conveyor 5 for buffering. By controlling the feeding screw conveyor 7, quantitatively feed the coal to the second feeding scraper conveyor 8, and the feeding air locker 9 evenly feeds the coal slime transported by the second feeding scraper conveyor 8 into the drying device 10, and completes Coal slime feeding process.

The coal-fired feeder 30 feeds the coal into the furnace of the thermal energy device 31. After ignition, the first air blower 36 is used to support combustion, and the second air blower 35 blows again to fully burn the unburned coal. The high-temperature flue gas produced is passed through The negative pressure of the first induced draft fan 14a at the end of the bag filter 13 is sucked into the drying device 10 and directly contacts with the coal slime and a strong heat exchange occurs. The qualified products after drying are discharged to the finished product belt conveyor through the outlet of the drying device 10 twenty two.

The qualified products after drying are transported to the finished product bucket elevator 23 through the finished product belt conveyor 22. The outlet of the finished product bucket elevator 23 is equipped with a three-way distributing valve 24. Divided into coal-fired scraper conveyor 28, coal-fired scraper conveyor 28 is delivered to coal-fired bunker 29, and coal-fired feeder 30 is given to the fire grate of thermal energy device 31. When coal is not needed, the three-way distributing valve 24 changes direction to distribute the material to the finished product transfer belt conveyor 25, and the finished product transfer belt conveyor 25 transports the finished coal slime to the finished product buffer bin 26, and the finished product feeder feeds the material Discharged and transported to power plants for power coal and other purposes.

Under the action of the negative pressure of the first induced draft fan 14a, the exhaust gas generated in the drying process enters the environmental protection dust removal subsystem through the spoiler valve 11, and first passes through the cyclone dust collector 12 to recover the coarse particle dust in the exhaust gas, and the recycled coarse particle dust passes through the The first screw conveyor 18a transports to the finished product belt conveyor 22 as finished coal slime. The waste gas containing finer dust continues to pass through the bag filter 13 to purify the waste gas containing finer dust, and the clean flue gas is discharged into the atmosphere through the bag filter, desulfurization tower, and chimney 16 . The finer dust recovered is conveyed into the recovered dust bin 19 through the second air lock 17b and the second screw conveyor 18b. The electric feeder 20 feeds the material quantitatively and at a constant speed, mixes with an appropriate amount of water, and granulates and shapes through the granulator 21 . Collect to finished product belt conveyor 22 as finished coal slime.

The slag produced by the thermal energy device 31 is pushed to the slag remover 37 for cooling through the fire grate, and then transported to the slag bin 40 by the slag removal belt conveyor 38 and the slag discharge bucket elevator 39 . Use automobile 42 to be transported to cinder block factory again and make raw material.

Under the negative pressure of the second induced draft fan 14b, the dust and waste gas generated at each reloading point in the material transportation process are sucked into the dust collector 42 of the workshop through the dust collection pipe, and the dust-containing waste gas is purified, and the clean flue gas passes through The chimney 16 vents to atmosphere. The recovered dust is delivered to the recovered dust bin 19 by the third screw conveyor 18c. Quantitative and uniform feeding by electric feeder 20, coupled with an appropriate amount of granulation and molding by granulator 21. Collect to finished product belt conveyor 22 as finished coal slime.

The whole process of the system runs under low oxygen negative pressure. In order to ensure the safety and reliability of the drying process, the oxygen content inside the drying system is always controlled below 8% in a low oxygen negative pressure environment. The high-temperature flue gas is equipped with a bypass system on the main air duct. The operation of the system is completed by the upper control computer measurement and control subsystem. The measurement and control subsystem monitors the temperature and oxygen content parameters in the system in real time to prevent the possibility of explosion during the drying process and ensure safe and reliable drying operation.

The hot flue gas generated by the low heat energy device 31 is sucked into the drying device 10 by the negative pressure of the first induced draft fan 14a. Bypass venting pipe, when shutting down or suspending production, the bypass venting pipe controls the first induced draft fan 14a, the first blower 36, the second blast, the spoiler valve 11, the bypass valve 32, and the water curtain dust removal through the program . Ensure safety and reliability after drying shutdown.

The sewage produced by the water curtain dedusting and spraying is used to flush the slag ash produced by the thermal energy device 31, and flows into the slag remover 37 through the slag tank. The overflowing sewage and the wastewater from the washing workshop are pumped into the concentration tank. After the sewage is concentrated and precipitated in the concentration tank, the underflow is pumped into the filter press 1 by the feed pump of the filter press 1, and the filtrate water is recycled for production water and Use water for washing the workshop to prevent sewage from being discharged outside.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (9)

1. a coal slime drying system, comprises filter press, coal slime drag conveyor, coal slurry belt conveyer, charging bucket elevator, first charging drag conveyor, coal slime surge bunker, feeding spiral conveyer, second charging drag conveyor, feeding air-locked valve, drying device, flow-disturbing valve, cyclone dust collectors, sack cleaner, first air-introduced machine, second air-introduced machine, first desulfurizing tower, chimney, first lock wind apparatus, second lock wind apparatus, first conveying worm, second conveying worm, 3rd conveying worm, reclaim dust cabin, electric feeder, comminutor, finished belt conveyer, finished product bucket elevator, T-piece splitting valve, finished product reprints belt conveyor, finished product surge bunker, finished product electric feeder, coal-fired drag conveyor, coal bunker, coal-fired batcher, heat energy apparatus, by-passing valve, screen collector, safety valve, second air blast, first air blast, slag remover, slagging-off belt conveyor, to slag tap bucket elevator, slag storehouse, workshop dust-precipitator, second desulfurizing tower and gas skirt, it is characterized in that:

The outlet of described filter press connects the entrance of charging bucket elevator by coal slime drag conveyor and coal slurry belt conveyer; The outlet of described charging bucket elevator connects coal slime surge bunker by the first charging drag conveyor; The discharging opening of described coal slime surge bunker connects the charging aperture of drying device by feeding spiral conveyer and the second charging drag conveyor; Described feeding air-locked valve is arranged at the charging aperture place of drying device; Described flow-disturbing valve is arranged at the air outlet place of drying device; The discharging opening of described drying device connects finished product belt conveyor; The air outlet of described drying device connects the entrance of cyclone dust collectors by pipeline; The material outlet place of described cyclone dust collectors arranges the first lock wind apparatus, and connects finished product belt conveyor by the first conveying worm; The air outlet of described cyclone dust collectors connects the entrance of sack cleaner by pipeline; The material outlet place of described sack cleaner arranges the second lock wind apparatus, and connects recovery dust cabin by the second conveying worm; Described sack cleaner connects the entrance of the first air-introduced machine by pipeline; The outlet of described first air-introduced machine connects the entrance of the first desulfurizing tower by pipeline; The outlet of described first desulfurizing tower is by pipeline communication chimney; Described workshop dust-precipitator is connected with the entrance of the second air-introduced machine; The outlet of described second air-introduced machine is communicated with chimney; The entrance of described second air-introduced machine connects the outlet of the second desulfurizing tower by pipeline; The entrance of described second desulfurizing tower connects gas skirt by pipeline; The discharging opening of described workshop dust-precipitator connects recovery dust cabin by the 3rd conveying worm; The exit of described recovery dust cabin arranges electric feeder, and is connected with the entrance of comminutor; The outlet of described comminutor is connected with finished belt conveyer; The discharge end of described finished belt conveyer is connected with the entrance of finished product bucket elevator; The outlet of described finished product bucket elevator arranges T-piece splitting valve; An outlet of described T-piece splitting valve is reprinted belt conveyor by finished product and is connected finished product surge bunker; Described finished product electric feeder is arranged at the discharge outlet of finished product surge bunker; Another outlet of described T-piece splitting valve connects coal bunker by coal-fired drag conveyor; The discharge outlet of described coal bunker arranges coal-fired batcher, and is communicated with the feeding mouth of heat energy apparatus; Described heat energy apparatus is provided with the first air blast and the second air blast; The heat smoke outlet of described heat energy apparatus connects the air inlet of drying device by pipeline; The heat smoke exit of described heat energy apparatus connects screen collector by pipeline and forms bypass, and arranges by-passing valve in the junction that the heat smoke of bypass and heat energy apparatus exports; The gas outlet of described screen collector by pipeline communication chimney, and pipeline arranges safety valve; The slag notch place of described heat energy apparatus arranges slag remover; The outlet of described slag remover connects the entrance of bucket elevator of slagging tap by slagging-off belt conveyor; The outlet of described bucket elevator of slagging tap connects slag storehouse; Described gas skirt is arranged at the top of slag remover.

2. coal slime drying system according to claim 1, is characterized in that: described drying device be provided with oxygen analyser.

3. coal slime drying system according to claim 1, is characterized in that: described sack cleaner is provided with temperature measurer.

4. coal slime drying system according to claim 1, it is characterized in that: described drying device comprises base, be installed on the housing of the sealing on base, two are parallel to each other, rotate the rotating shaft be arranged at also through lower housing portion on base, and drive the reducing motor of connection rotating shaft; The top, one end of described housing is provided with feeding air-locked valve and blast pipe, and the bottom of the other end is provided with discharging wind stopping device, and top is provided with air outlet; Described rotating shaft is provided with multiple copy plate by certain forms; The bottom of described housing is the drain pan of two circular arcs arranged side by side, and two rotating shafts to be arranged at above two drain pans and the two axis being parallel respectively, and the copy plate in described rotating shaft is close to the diapire of drain pan; Roof in described housing is provided with the upper plate washer to downward-extension, and diapire is provided with the lower baffle upwards extended, and described upper plate washer and lower baffle are crisscross arranged; The material inlet part of described discharging wind stopping device is higher than the copy plate in rotating shaft.

5. coal slime drying system according to claim 4, is characterized in that: described housing upper is provided with explosion proof door.

6. coal slime drying system according to claim 4, is characterized in that: described copy plate comprises and to be fixedly connected with rotating shaft and the former of surface and rotating shaft cross-section parallel and be fixedly connected on former end and the surperficial lifting blade overlapped with shaft axis.

7. coal slime drying system according to claim 5, is characterized in that: described copy plate comprises and to be fixedly connected with rotating shaft and the former of surface and rotating shaft cross-section parallel and be fixedly connected on former end and the surperficial lifting blade overlapped with shaft axis.

8. coal slime drying system according to claim 6, is characterized in that: the end of described lifting blade is provided with wear rib.

9., according to the arbitrary described coal slime drying system of claim 6-8, it is characterized in that: described former is symmetrical arranged between two, and be fixedly connected with rotating shaft by two semi arch anchor ears.