CN210425071U - Coal-fired power plant boiler dry slag removal three-level conveying system with stronger adaptability - Google Patents

Abstract

The utility model discloses a coal-fired power plant boiler dry deslagging three-level conveying system with stronger adaptability, wherein the end where the horizontal section of a steel belt conveyor in a primary deslagging machine, a secondary deslagging machine and a three-level deslagging machine is positioned is a slag receiving end, and the end where the inclined section is positioned is a slag discharging end; the slag receiving end of the first-stage slag remover is arranged at the outlet of the large slag pre-crushing device, the slag discharging end of the first-stage slag remover is provided with a first excessive slag hopper connected with the slag receiving end of the second-stage slag remover, the slag discharging end of the second-stage slag remover is provided with a second excessive slag hopper connected with the slag receiving end of the third-stage slag remover, the slag discharging end of the third-stage slag remover is provided with a third excessive slag hopper connected with the upper end inlet of the slag crusher, the slag storage bin is arranged below the slag crusher, and the slag bin slag discharging device is connected with the slag storage bin; the center of the slag outlet at the lower end of the slag discharging hopper of the boiler is relatively deviated from the center of the slag inlet at the upper end of the slag discharging hopper of the boiler. The utility model discloses can be so that the slag temperature greatly reduced who reachs the slag crusher can also adapt to various power boiler arrangement forms.

Description

Coal-fired power plant boiler dry slag removal three-level conveying system with stronger adaptability

Technical Field

The utility model relates to a tertiary conveying system of coal fired power plant boiler dry slag removal that adaptability is stronger.

Background

98 percent of deslagging systems of coal-fired power plants put into production before 2006 are hydraulic deslagging systems. The hydraulic deslagging system consumes huge water and electricity, and does not meet the requirement of the modern power plant on environmental protection. In 2006, a dry slag removal system is adopted in a power plant successively, and the system has absolute advantages in the aspects of water saving, energy saving, comprehensive utilization of ash and slag resources and the like, and meets the national requirement on environmental protection of the power plant.

The traditional dry deslagging process of the deslagging system of the coal-fired power plant is basically a primary conveying system. When the boiler is running, hot slag at about 850 ℃ is conveyed on a traditional one-stage dry type slag remover. Because the slag pile is thick, the cooling air flow can only contact with the surface of the slag pile, the central temperature of the slag pile can not be effectively reduced, and when the slag passing through the primary slag remover is crushed by the slag crusher, the temperature is very high, so that the working temperature of the slag crusher is extremely high, the performance reduction of wear-resistant parts and bearings of the slag crusher is often caused, the service life is very short, and the service life is usually below 3000 h. When the boiler is coked seriously, the crushed coke blocks and slag can be sintered in the slag storage machine for the second time, so that the slag bin is blocked during discharging.

Moreover, the domestic coal-fired power plant boiler field is small, the arrangement form is complex, and the transformation can not be carried out according to the existing one-level dry deslagging process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a dry deslagging three-level conveying system of a coal-fired power plant boiler, which has stronger adaptability, not only greatly reduces the temperature of slag reaching a slag crusher and completely avoids secondary sintering; the method can also be suitable for various power plant boiler arrangement forms, has small site requirement and less water and power consumption, and meets the requirements of modern power plants on environmental protection in the aspects of water saving, energy saving, comprehensive utilization of resources and the like.

Solve above-mentioned technical problem, the utility model discloses the technical scheme who adopts as follows:

the utility model provides a tertiary conveying system of coal fired power plant boiler dry slag removal that adaptability is stronger, includes that the boiler arranges sediment fill and big sediment breaker in advance, big sediment breaker installs in advance in the lower extreme slag notch department that sediment was fought to the boiler for carry out breakage characterized by in advance to the slag: the slag extractor also comprises a first-stage slag extractor, a second-stage slag extractor, a third-stage slag extractor, a slag crusher, a slag storage bin, a slag bin slag unloading device and a control system; the steel belt conveyors in the first-stage slag remover, the second-stage slag remover and the third-stage slag remover respectively comprise a horizontal section and an inclined section which is tilted upwards, wherein the end where the horizontal section is located is a slag receiving end, and the end where the inclined section is located is a slag discharging end; the slag receiving end of the first-stage slag remover is arranged at the outlet of the large slag pre-crushing device, the slag discharging end of the first-stage slag remover is provided with a first downward excessive slag hopper, the lower end outlet of the first excessive slag hopper is connected with the slag receiving end of the second-stage slag remover, the slag discharging end of the second-stage slag remover is provided with a second downward excessive slag hopper, the lower end outlet of the second excessive slag hopper is connected with the slag receiving end of the third-stage slag remover, the slag discharging end of the third-stage slag remover is provided with a third downward excessive slag hopper, the lower end outlet of the third excessive slag hopper is connected with the upper end inlet of the slag crusher, the slag storage bin is arranged below the slag crusher, slag crushed by the slag crusher falls into the slag storage bin, and the slag bin discharging device is connected with the slag storage bin; wherein, the center of the lower slag outlet of the boiler slag discharging hopper is relatively deviated from the center of the upper slag inlet thereof; the control system is respectively and electrically connected with the large slag pre-crushing device, the primary slag remover, the secondary slag remover, the tertiary slag remover, the slag crusher and the slag bin slag discharging device.

The first-stage slag remover to the third-stage slag remover are arranged in a straight line shape, and the defects that the first-stage direct conveying distance is too long, the conveying belt deviates and slips and the like can be overcome.

The first-third-stage slag removers are arranged in a zigzag mode, and the form can be suitable for coal-fired power plants with limited sites which cannot be transformed by the traditional dry slag removers.

The first-third slag removers are arranged in a U shape, and the coal-fired power plant with limited site which cannot be transformed by the traditional dry slag removers can be realized in the form.

The slag discharging end of the first-stage slag remover, the slag discharging end of the second-stage slag remover and the slag discharging end of the third-stage slag remover are respectively provided with an emergency slag discharging channel, and a pneumatic valve is arranged on the emergency slag discharging channel.

The large slag pre-crushing device is a hydraulic shutoff door.

The boiler slag discharging hopper is provided with two lower end slag outlets, and each lower end slag outlet is provided with three hydraulic turn-off doors respectively.

The slag bin slag unloading device comprises a slag unloading pipe, a manual gate valve and a pneumatic gate valve, wherein the slag unloading pipe is connected with the bottom of the slag storage bin, and the manual gate valve and the pneumatic gate valve are respectively arranged on the slag unloading pipe.

The tertiary conveyor system of coal fired power plant boiler dry slagging-off that adaptability is stronger still includes unloads the sediment workshop and pulsed sack dust catcher, unload in the slag tap end of sediment pipe penetrates the sediment workshop, pulsed sack dust catcher with unload the sediment workshop and be connected for absorb the dust in the sediment workshop of unloading.

When the boiler operates, hot slag at about 850 ℃ is conveyed on the primary slag remover, the air flow is in surface contact with a slag pile and then falls from the primary slag remover into the secondary slag remover for conveying, the slag freely falls down and impacts on a steel belt of the secondary slag remover to be scattered, the scattered slag can be better cooled, the air flow in the secondary slag remover is in surface contact with the slag pile and continues to reduce the temperature of the slag, and when the slag freely falls down and impacts on the steel belt of the tertiary slag remover for conveying from an outlet of the secondary slag remover into the tertiary slag remover for conveying, the scattered slag can be better cooled, the air flow in the tertiary slag remover is in surface contact with the slag pile and continues to reduce the temperature of the slag, and finally the temperature of the slag conveyed to the slag outlet of the tertiary slag remover can be reduced to be below 150 ℃.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses set up one-level slagging-off machine, second grade slagging-off machine and tertiary slagging-off machine, can fully break up and cool down the slag, the slag after through three slagging-off machines is when getting into the slag crusher breakage, and the temperature of slag will fall to below 150 ℃, and effectual extension that has prolonged slag crusher life just can not be in the sediment storehouse secondary sintering, and the slag crusher wearing parts life-span is usually more than 15000 h. The slag transported by the utility model has better sale condition.

Just the technical scheme of the utility model can arrange in a flexible way, arrange into multiple form, the less dry slagging-off environmental protection of old power plant of specially adapted place space reforms transform. The utility model discloses a system is simple, and the equipment flow is few, and operating stability is high, and the consumption is few.

Additionally, the utility model discloses still set up first excessive sediment fill, the excessive sediment fill of second and the excessive sediment fill of third for connect more stably, the transport of slag is more smooth and easy reliable, and adaptability is stronger, and the center of the lower extreme slag notch of the sediment fill of boiler and the center of its upper end slag inlet are skew relatively, make the utility model discloses can adapt to more complicated places, need not align between one-level slagging-off machine and the sediment fill of boiler, and skew back can carry out preliminary buffering and break up to initial slag.

Drawings

FIG. 1 is a schematic view of the components and connections of the present invention;

fig. 2 is a schematic layout diagram of a first embodiment of the present invention;

fig. 3 is a schematic layout diagram of a second embodiment of the present invention;

fig. 4 is a schematic layout diagram of a third embodiment of the present invention;

fig. 5 is a schematic side view of the slag discharging hopper of the boiler of the present invention.

Reference numerals:

1-a boiler slag discharge hopper; 1.1-lower end slag outlet; 1.2-a slag inlet at the upper end; 2-big slag pre-crushing device; 3-a first-stage slag remover; 4-a first transition slag hopper; 5-a second-stage slag remover; 6-a second transition slag hopper; 7-a three-stage slag remover; 8-a third transition slag hopper; 9-a slag storage bin; 10-pulse type bag dust collector; 11-emergency slag discharge channel; 12-an electrical wire; 14-a slag crusher; 15-a bin wall vibrator; 16-a slag discharge pipe; 17-manual gate valve; 18-pneumatic gate valves; 19-a vehicle; 20-the slag discharging end of the slag discharging pipe; 21-trachea; 22-a hydraulic station; 23-a hydraulic tube; 24-a lighting lamp; 25-a camera; 26-a horizontal section; 27-inclined section.

Detailed Description

The present invention will be further described with reference to the following examples.

The first embodiment is as follows:

taking the first-stage 3X210MW unit of the power plant of sand corner a as an example, the first-stage 3X210MW unit of the power plant of sand corner a adopts a hydraulic deslagging system at present, and has the defects of many accessory equipment, large maintenance workload, high energy consumption, serious water resource waste, high sewage treatment cost and the like.

The dry slag removal system can improve the current situation, greatly reduce the energy consumption, comprehensively utilize the output dry slag, save energy, improve efficiency, create income and achieve civilized production, thereby achieving multiple purposes. The dry slag removal technology is advanced, mature and reliable, is widely applied to domestic and foreign coal-fired power plants, and obtains good economic benefit through operation. And the dry-type slagging-off technique has the problem mentioned in the background art, the utility model discloses will carry out further innovation.

Fig. 1 shows an embodiment of a boiler dry slag removal three-stage conveying system of a coal-fired power plant with stronger adaptability, which can be applied to a first-stage 3X210MW unit of a power plant of a sand-corner a, and comprises a boiler slag removal hopper 1, a large slag pre-crushing device 2, a first-stage slag remover 3, a second-stage slag remover 5, a third-stage slag remover 7, a slag crusher 14, a slag storage bin 9, a slag bin slag discharging device and a control system. Of course, the primary slag remover 3, the secondary slag remover 5 and the tertiary slag remover 7 are all dry slag removers.

Wherein, big sediment is breaker 2 in advance installs in the lower extreme slag notch 1.1 department of boiler sediment slag hopper 1 for carry out the breakage in advance to the slag of great piece, the steel band conveyer in one-level slagging-off machine 3, second grade slagging-off machine 5 and the tertiary slagging-off machine 7 all includes the horizontal segment 26 that is connected and the slope section of perk that makes progress, and wherein, the end at horizontal segment 26 place is for connecing the end at sediment end, slope section 27 place to be the end of slagging tap. The sediment end that connects of one-level slagging-off machine 3 is established in big sediment 2 exits of breaker in advance, and the sediment end that connects of second grade slagging-off machine 5 is established in the below of the end of slagging tap of one-level slagging-off machine 3, is equipped with first excessive sediment fill 4 down at the end of slagging tap of one-level slagging-off machine 3, and the lower extreme export of first excessive sediment fill 4 is held with the sediment that connects of second grade slagging-off machine 5 and is connected. The slag receiving end of the three-stage slag remover 7 is arranged below the slag discharging end of the two-stage slag remover 5, the slag discharging end of the two-stage slag remover 5 is provided with a second downward excessive slag hopper 6, and the lower end outlet of the second excessive slag hopper 6 is connected with the slag receiving end of the three-stage slag remover 7. The slag crusher 14 is arranged below the slag discharging end of the three-stage slag remover 7, the slag discharging end of the three-stage slag remover 7 is provided with a downward third excessive slag hopper 8, and the lower end outlet of the third excessive slag hopper 8 is connected with the upper end inlet of the slag crusher 14. The slag is free falling through the excess hopper. The slag storage bin 9 is arranged below the slag crusher 14, an upper bin mouth of the slag storage bin 9 corresponds to a lower outlet of the slag crusher 14, slag crushed by the slag crusher 14 falls into the slag storage bin 9, the slag bin slag discharging device is connected with the slag storage bin 9, and the control system is respectively electrically connected with the large slag pre-crushing device 2, the one-level slag remover 3, the two-level slag remover 5, the three-level slag remover 7, the slag crusher 14 and the slag bin slag discharging device. As shown in fig. 5, the center of the lower slag outlet 1.1 of the boiler slag discharging hopper is relatively deviated from the center of the upper slag inlet 1.2 thereof, that is, the lower slag outlet 1.1 of the boiler slag discharging hopper is relatively staggered from the upper slag inlet 1.2 thereof.

In the operation process, because the center of the lower end slag outlet of the boiler slag discharging hopper is relatively deviated from the center of the upper end slag inlet, when the slag passes through the boiler slag discharging hopper, the slag can be preliminarily buffered and pre-scattered, the temperature of the slag falling from the lower end slag outlet 1.1 of the boiler slag discharging hopper 1 is about 850 ℃, the slag is firstly pre-crushed by the large slag pre-crushing device 2, the slag after pre-crushing falls into the slag receiving end of the primary slag remover 3 and falls onto the steel belt conveyor of the primary slag remover for low-speed conveying, the speed is about 0.5-5 m/min, the slag conveyed to the slag discharging end of the primary slag remover 3 falls downwards into the slag receiving end of the secondary slag remover 5 through the first transition slag hopper 4 and falls onto the steel belt conveyor of the secondary slag remover 5 for conveying, the slag conveyed to the slag discharging end of the secondary slag remover 5 falls into the slag receiving end of the tertiary slag remover 7 through the second transition slag hopper 6, and the slag falls on a steel belt conveyor of the three-stage slag remover 7 for conveying, the slag conveyed to the slag discharging end of the three-stage slag remover 7 falls into the slag crusher 14 through the third transition slag hopper 8 for crushing, the temperature of the slag falling into the slag crusher 14 is reduced to below 150 ℃, the crushed slag falls into the slag storage bin 9, the slag storage bin 9 is used for transferring and storing, and when the slag in the slag storage bin 9 needs to be loaded, the slag in the slag storage bin is discharged onto a vehicle through the slag bin slag discharging device and is transported outwards by the vehicle. In the process of conveying the slag in the slag remover, the slag is cooled by cold air sucked by negative pressure, the slag is completely combusted, the cold air exchanges heat with the high-temperature slag, the cold air absorbs the latent heat of the slag and the heat released by the combustion of combustible again, and the temperature is raised to 340-410 ℃ and then is returned to the hearth. The slag can be scattered due to the impact force when impacting on the steel belt conveyors of the first-level slag remover, the second-level slag remover and the third-level slag remover, so that the slag can be cooled better.

In order to prevent the slag storage bin 9 from being blocked, two bin wall rappers 15 are arranged on the side wall of the slag storage bin 9.

The control system of this embodiment includes PLC, is controlled by PLC, can realize automaticly.

As shown in the schematic diagram of fig. 2, the first-stage slag remover 3, the second-stage slag remover 5 and the third-stage slag remover 7 of the embodiment are arranged in a straight line, and the form can overcome the defects of overlong first-stage direct conveying distance, deviation and slippage of a conveying belt and the like.

This embodiment still is equipped with urgent slag discharging channel 11 respectively at the end of slagging tap of one-level slagging-off machine 3, the end of slagging tap of second grade slagging-off machine 5 and the end of slagging tap of tertiary slagging-off machine 7, is equipped with the pneumatic valve on urgent slag discharging channel 11, through opening and closing of urgent slag discharging channel 11 of pneumatic valve control. The slag and dust discharge may be performed through the emergency slag discharge passage 11 in the case of an emergency stop of the steel belt conveyor.

The big slag pre-crushing device 2 of this embodiment is a hydraulic shutoff door, and slag hopper 1 is arranged at the boiler and is equipped with two lower extreme slag outlets 1.1, and every lower extreme slag outlet 1.1 punishment is equipped with three hydraulic shutoff door respectively, sets up three hydraulic shutoff door and can guarantee to smash the slag to the granule size when broken in advance and be below 5 cm.

The slag bin slag unloading device comprises a slag unloading pipe 16, a manual gate valve 17 and a pneumatic gate valve 18, the slag unloading pipe 16 is connected with the bottom of the slag storage bin 9, and the manual gate valve 17 and the pneumatic gate valve 18 are respectively arranged on the slag unloading pipe 16, so that manual control and electrical control over the slag unloading pipe 16 can be realized.

In order to facilitate the discharge of the slag, the three-stage dry slag removal conveying system with higher adaptability for the boiler of the coal-fired power plant further comprises a slag discharge workshop (the slag discharge workshop is not shown in the figure) and a large pulse type bag dust collector 10, wherein the slag discharge workshop is a closed space, a slag discharge end 20 of a slag discharge pipe 16 penetrates into the slag discharge workshop, and the pulse type bag dust collector 10 is connected with the slag discharge workshop and used for absorbing dust in the slag discharge workshop and avoiding dust emission in the loading environment. The pipeline of the pulse type bag dust collector 10 is also provided with a manual gate valve and a pneumatic gate valve. When loading is required, the vehicle 19 is driven into the slag discharge workshop and slag is discharged from the slag discharge end 20 of the slag discharge pipe 16 and falls into the vehicle.

Wherein, the first-stage slag remover 3 is an independent cleaning chain type, and consists of 15 sections of standard sections, 1 section of tensioning section, 2 sections of arc starting sections and 1 section of driving shaft section, the upward tilting angle of the arc starting sections is 20 degrees and 40 degrees, the total length of the steel strip is about 67m, and the central line deviates towards the rear of the furnace compared with the central line of the hearth. The two-stage slag remover 5 is of a steel belt self-cleaning type and comprises 2 sections of standard sections, 1 section of tensioning section, 3 sections of arc starting sections and 1 section of driving shaft section, the upward tilting angle of the arc starting sections is 27 degrees, and the total length of the steel belt is about 22 m. The three-stage slag remover 7 is of a steel belt self-cleaning type and comprises 20 standard sections, 1 tensioning section, 3 arc starting sections and 1 driving shaft section, the upward tilting angle of the arc starting sections is 25 degrees and 30 degrees, the total length of the steel belt is about 89m, and the central line of the steel belt is parallel to the central line of the one-stage slag remover.

The tertiary conveying system of coal fired power plant boiler dry slag removal that adaptability is stronger of this embodiment sets up hydraulic pressure station 22, and hydraulic pressure station 22 is connected with hydraulic pressure shutoff door, hydraulic pressure device in one-level slagging-off machine 3, second grade slagging-off machine 5 and the tertiary slagging-off machine 7 through hydraulic pressure pipe 23. The pneumatic gate valve 18 and the pneumatic valve are also connected with an external pneumatic device through an air pipe 21. For monitoring, a plurality of illuminating lamps 24 and a plurality of cameras 25 are further arranged, and the illuminating lamps 24 and the cameras 25 are connected with a power supply through the electric wires 12.

The three-stage dry deslagging conveying system with stronger adaptability for the boiler of the coal-fired power plant can achieve the following performance indexes:

rated slag output per hour: 10t/h

Maximum slag yield per hour: 30t/h

The running speed of the steel strip: 0.4 to 6m/min

The heat-resisting temperature of the steel strip is as follows: 900 deg.C

Slag temperature at the outlet of the slag remover: less than 150 deg.C

The running noise of the equipment is as follows: less than 60dB (1m)

The utility model discloses a coal fired power plant boiler that adaptability is stronger removes the tertiary conveying system of sediment futilely and puts into operation the back, need not the ash field, can reduce the pollution of dust to peripheral area, and the ash sediment activity is high futilely, and the metal chemistry nature in the former coal can not destroyed, can regard as the main raw materials of building materials such as cement and heat preservation. The cement produced by the raw materials has short solidification period and stable solidification, shortens the construction period of the construction industry, really realizes the comprehensive utilization of wastes, promotes and promotes the development of circular economy and improves the social benefit.

The following is a simple economic analysis: (wherein the annual power generation time is 300 days, 5500 hours, calculated according to a single furnace)

1. Comprehensive utilization of dry slag: the average amount of the discharged slag is 6t/h, the price of the dry slag is 80 yuan/t, the price of the wet slag is 20 yuan/t, and 6 x (80-20) x 5500-1980000 yuan can be saved every year

2. Water saving amount: the power plant of sand corner A uses the hydraulic deslagging system at present, the average water consumption is 90t/h, the water price is 0.3 yuan/t, and then the water is saved by 0.3 multiplied by 90 multiplied by 5500 to 148500 yuan every year.

3. Saving electric quantity: the total amount of a slag flushing pump, a sewage pump, a slag crusher, an overflow pump and the like is about 300Kw, the total power of a dry slag system is about 90Kw, the electricity price is 0.35 yuan/Kwh, and the annual electricity consumption is (300-90) × 24 × 0.35 × 300 days which is 529200 yuan;

4. when the furnace efficiency is improved by 0.20%, the total annual power generation amount is increased by 250000 multiplied by 5500 multiplied by 0.44 multiplied by 0.20% ═ 1210000 yuan (the average power generation amount is 25 ten thousand KW/h)

5. The maintenance cost is saved: 80-20 ═ 60 ten thousand/year

Use the utility model discloses afterwards, can practice thrift each item total cost every year and be about: 1980000+148500+529200+1210000+600000 as 4467700-membered.

Example two:

fig. 3 is a schematic diagram of the second embodiment, in which the primary slag remover 3, the secondary slag remover 5 and the tertiary slag remover 7 are arranged in a zigzag manner, and this form can be adapted to a coal-fired power plant with limited site where the conventional dry slag remover cannot be modified.

Example three:

fig. 4 is a schematic diagram of the third embodiment, in which the primary slag remover 3, the secondary slag remover 5 and the tertiary slag remover 7 are arranged in a U-shape, and this form can achieve a coal-fired power plant with limited site, which cannot be transformed by the conventional dry slag remover.

Claims (9)

1. The utility model provides a tertiary conveying system of coal fired power plant boiler dry slag removal that adaptability is stronger, includes that the boiler arranges sediment fill and big sediment breaker in advance, big sediment breaker installs in advance in the lower extreme slag notch department that sediment was fought to the boiler for carry out breakage characterized by in advance to the slag: the slag extractor also comprises a first-stage slag extractor, a second-stage slag extractor, a third-stage slag extractor, a slag crusher, a slag storage bin, a slag bin slag unloading device and a control system; the steel belt conveyors in the primary slag remover, the secondary slag remover and the tertiary slag remover respectively comprise a horizontal section and an upward tilting section which are connected, wherein the end where the horizontal section is located is a slag receiving end, and the end where the tilting section is located is a slag discharging end; the slag receiving end of the primary slag remover is arranged at the outlet of the large slag pre-crushing device, the slag discharging end of the primary slag remover is provided with a first downward excessive slag hopper, the lower end outlet of the first excessive slag hopper is connected with the slag receiving end of the secondary slag remover, the slag discharging end of the secondary slag remover is provided with a second downward excessive slag hopper, the lower end outlet of the second excessive slag hopper is connected with the slag receiving end of the tertiary slag remover, the slag discharging end of the tertiary slag remover is provided with a third downward excessive slag hopper, the lower end outlet of the third excessive slag hopper is connected with the upper end inlet of the slag crusher, the slag storage bin is arranged below the slag crusher, slag crushed by the slag crusher falls into the slag storage bin, and the slag bin discharging device is connected with the slag storage bin; the center of a slag outlet at the lower end of the boiler slag discharging hopper is relatively deviated from the center of a slag inlet at the upper end of the boiler slag discharging hopper; and the control system is respectively and electrically connected with the large slag pre-crushing device, the primary slag remover, the secondary slag remover, the tertiary slag remover, the slag crusher and the slag bin slag discharging device.

2. The more adaptable coal fired power plant boiler dry slag three stage transport system of claim 1, characterized in that: the first-to-third-stage slag removers are arranged in a straight line shape.

3. The more adaptable coal fired power plant boiler dry slag three stage transport system of claim 1, characterized in that: the first-third slag removers are arranged in a zigzag mode.

4. The more adaptable coal fired power plant boiler dry slag three stage transport system of claim 1, characterized in that: the first-third slag removers are arranged in a U shape.

5. The more adaptable coal fired power plant boiler dry slag three stage transport system of claim 1, characterized in that: the slag discharging end of the first-stage slag remover, the slag discharging end of the second-stage slag remover and the slag discharging end of the third-stage slag remover are respectively provided with an emergency slag discharging channel, and a pneumatic valve is arranged on the emergency slag discharging channel.

6. The more adaptable coal fired power plant boiler dry slag three stage transport system of claim 1, characterized in that: the large slag pre-crushing device is a hydraulic shutoff door.

7. The more adaptable coal fired power plant boiler dry slag tertiary delivery system of claim 6, characterized in that: the boiler slag discharging hopper is provided with two lower end slag outlets, and each lower end slag outlet is provided with three hydraulic turn-off doors respectively.

8. The more adaptable coal fired power plant boiler dry slag three stage transport system of claim 1, characterized in that: the slag bin slag unloading device comprises a slag unloading pipe, a manual gate valve and a pneumatic gate valve, wherein the slag unloading pipe is connected with the bottom of the slag storage bin, and the manual gate valve and the pneumatic gate valve are respectively arranged on the slag unloading pipe.

9. The more adaptable coal fired power plant boiler dry slag tertiary delivery system of claim 8, characterized in that: the three-stage dry slag removal conveying system for the boiler of the coal-fired power plant further comprises a slag unloading workshop and a pulse type bag dust collector, wherein a slag discharging end of the slag unloading pipe penetrates into the slag unloading workshop, and the pulse type bag dust collector is connected with the slag unloading workshop and used for absorbing dust in the slag unloading workshop.

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