CN210425070U - Tertiary conveying system of coal fired power plant boiler dry slag removal - Google Patents
Tertiary conveying system of coal fired power plant boiler dry slag removal Download PDFInfo
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- CN210425070U CN210425070U CN201920797798.5U CN201920797798U CN210425070U CN 210425070 U CN210425070 U CN 210425070U CN 201920797798 U CN201920797798 U CN 201920797798U CN 210425070 U CN210425070 U CN 210425070U
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Abstract
The utility model discloses a boiler dry slag removal three-stage conveying system of a coal-fired power plant, wherein a large slag pre-crushing device is arranged at a slag outlet at the lower end of a slag removal hopper of a boiler, steel belt conveyors in a primary slag remover, a secondary slag remover and a tertiary slag remover all comprise a horizontal section and an inclined section which is tilted upwards, which are connected with each other, 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 one-level slag remover is arranged at the outlet of the large slag pre-crushing device, the slag receiving end of the second-level slag remover is arranged below the slag discharging end of the one-level slag remover, the slag receiving end of the third-level slag remover is arranged below the slag discharging end of the second-level slag remover, the slag crusher is arranged at the outlet of the slag discharging end of the third-level slag remover, 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 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
Technical Field
The utility model relates to a tertiary conveying system of coal fired power plant boiler dry slag removal.
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 boiler dry slag removal three-level conveying system of a coal-fired power plant, which can not only greatly reduce the temperature of slag reaching a slag crusher and completely avoid 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, 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 the 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 one-level slag remover is established big sediment breaker exit in advance, the slag receiving end of second grade slag remover is established in the below of the end of slagging tap of one-level slag remover, the slag receiving end of tertiary slag remover is established in the end below of slagging tap of second grade slag remover, the slag crusher setting is in the exit of the end of slagging tap of tertiary slag remover, store up the slag bin setting below the slag crusher, the slag after smashing by the slag crusher falls into storing up the slag bin, the slag bin unloads the sediment device and is connected with storing up the slag bin, control system respectively with big sediment breaker, one-level slag remover, second grade slag remover, tertiary slag remover, slag crusher and slag bin unload sediment device electric connection.
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 end of slagging tap of one-level slagging-off machine is equipped with first excessive sediment fill down, and the lower extreme export of first excessive sediment fill is connected with the sediment end that connects of second grade slagging-off machine, and the end of slagging tap of second grade slagging-off machine is equipped with the excessive sediment fill of second down, and the lower extreme export of the excessive sediment fill of second is connected with the sediment end that connects of tertiary slagging-off machine, and the end of slagging tap of tertiary slagging-off machine is equipped with the excessive sediment fill of third down, and the lower extreme export of the excessive sediment fill of third and the upper end access connection of slag crusher. Therefore, the first-stage slag remover, the second-stage slag remover and the third-stage slag remover can be better connected, and the slag is more reliably conveyed.
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 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.
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.
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.
Reference numerals:
1-a boiler slag discharge hopper; 1.1-lower end slag outlet; 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 dry slag removal three-stage conveying system of a boiler of a coal-fired power plant, which can be applied to a first-stage 3X210MW unit of a power plant of a sand-corner a, and comprises a slag removal hopper 1 of the boiler, 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 slag receiving end of one-level slag remover 3 is established in big sediment breaker 2 exit in advance, the slag receiving end of second grade slag remover 5 is established in the below of the end of slagging tap of one-level slag remover 3, the end of slagging tap of tertiary slag remover 7 is established in the end below of slagging tap of second grade slag remover 5, slag crusher 14 sets up the exit at the end of slagging tap of tertiary slag remover 7, store up the setting of cinder bin 9 below slag crusher 14, the last bin mouth of cinder bin 9 corresponds with the lower export of slag crusher 14, the slag after being broken by slag crusher 14 falls into in storing up cinder bin 9, the cinder bin is unloaded the sediment device and is connected with storing up cinder bin 9, control system is breaker 2 in advance with big sediment respectively, one-level slag remover 3, second grade slag remover 5, tertiary slag remover 7, slag crusher 14 and cinder bin are unloaded sediment device electric connection.
In the operation process, the temperature of the slag falling from a slag outlet 1.1 at the lower end of a slag discharging hopper 1 of the boiler is about 850 ℃, the slag is pre-crushed by a large slag pre-crushing device 2, the pre-crushed slag falls into a slag receiving end of a primary slag remover 3 and falls onto a 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 into the slag receiving end of a secondary slag remover 5 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 a tertiary slag remover 7 and falls onto the steel belt conveyor of the tertiary slag remover 7 for conveying, the slag conveyed to the slag discharging end of the tertiary slag remover 7 falls into a slag crusher 14 for crushing, the temperature of the slag falling into the slag crusher 14 falls below 150 ℃, and the crushed slag falls into a slag storage bin 9, when the slag storage bin 9 is used for transferring and storing slag and 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 a 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.
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.
In order to better connect one-level slagging-off machine 3, second grade slagging-off machine 5 and tertiary slagging-off machine 7, make the transport of slag more reliable, it is equipped with first excessive slag fill 4 down to hold at the slagging-off of one-level slagging-off machine 3, the lower extreme export of first excessive slag fill 4 is held with the sediment that connects of second grade slagging-off machine 5 and is connected, the end of slagging-off of second grade slagging-off machine 5 is equipped with the excessive slag fill 6 of second down, the lower extreme export of the excessive slag fill 6 of second is held with the sediment that connects of tertiary slagging-off machine 7 and is connected, the end of slagging-off of tertiary slagging-off machine 7 is equipped with the excessive slag fill 8 of third down, the lower extreme export of the excessive slag fill 8 of third is held with the upper end. The slag is free falling through the excess hopper.
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 conveniently discharge the slag, the three-stage dry slag removal conveying system 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-type 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-type dust collector 10 is connected with the slag discharge workshop and used for absorbing dust in the slag discharge workshop and avoiding dust raising in a 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 three-level conveying system for dry slag removal of the boiler of the coal-fired power plant is provided with a hydraulic station 22, and the hydraulic station 22 is connected with hydraulic devices in a hydraulic shutoff door, a first-level slag remover 3, a second-level slag remover 5 and a three-level slag remover 7 through a hydraulic 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 for the coal-fired power plant boiler can achieve the following performance indexes:
the utility model discloses a coal fired power plant boiler removes 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 (10)
1. The utility model provides a tertiary conveying system of coal fired power plant boiler dry slag removal, 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 the 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 one-level slag remover is arranged at the outlet of the large slag pre-crushing device, the slag receiving end of the second-level slag remover is arranged below the slag discharging end of the one-level slag remover, the slag receiving end of the third-level slag remover is arranged below the slag discharging end of the second-level slag remover, the slag crusher is arranged at the outlet of the slag discharging end of the third-level slag remover, the slag storage bin is arranged below the slag crusher, slag crushed by the slag crusher falls into the slag storage bin, the slag bin unloading device is connected with the slag storage bin, and the control system is respectively connected with the large slag pre-crushing device, the one-level slag remover, the second-level slag remover, the third-level slag remover, the slag crusher and the slag bin unloading device in advance.
2. The coal fired power plant boiler dry slag tertiary delivery system of claim 1, characterized in that: the first-to-third-stage slag removers are arranged in a straight line shape.
3. The coal fired power plant boiler dry slag tertiary delivery system of claim 1, characterized in that: the first-third slag removers are arranged in a zigzag mode.
4. The coal fired power plant boiler dry slag tertiary delivery system of claim 1, characterized in that: the first-third slag removers are arranged in a U shape.
5. The coal fired power plant boiler dry slag tertiary delivery system of claim 1, characterized in that: the end of slagging tap of one-level slagging-off machine is equipped with the first excessive sediment fill down, the lower extreme export of first excessive sediment fill is connected with the sediment end that connects of second grade slagging-off machine, the end of slagging tap of second grade slagging-off machine is equipped with the excessive sediment fill of second down, the lower extreme export of the excessive sediment fill of second is connected with the sediment end that connects of tertiary slagging-off machine, the end of slagging tap of tertiary slagging-off machine is equipped with the excessive sediment fill of third down, the lower extreme export of the excessive sediment fill of third and the upper end access connection of slag crusher.
6. The coal fired power plant boiler dry slag three stage conveying system of claim 5, 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.
7. The coal fired power plant boiler dry slag tertiary delivery system of claim 1, characterized in that: the large slag pre-crushing device is a hydraulic shutoff door.
8. The coal fired power plant boiler dry slag three stage conveying system of claim 7, 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.
9. The coal fired power plant boiler dry slag tertiary delivery 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.
10. The coal fired power plant boiler dry slag tertiary delivery system of claim 9, 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111672874A (en) * | 2020-06-12 | 2020-09-18 | 陕西正元环保科技产业(集团)有限公司 | Method for recycling slag and fly ash and boiler system of coal-fired power plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672874A (en) * | 2020-06-12 | 2020-09-18 | 陕西正元环保科技产业(集团)有限公司 | Method for recycling slag and fly ash and boiler system of coal-fired power plant |
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Granted publication date: 20200428 |