CN211399799U - Dry-type slag discharging system for waste incineration slag - Google Patents
Dry-type slag discharging system for waste incineration slag Download PDFInfo
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- CN211399799U CN211399799U CN201922107881.8U CN201922107881U CN211399799U CN 211399799 U CN211399799 U CN 211399799U CN 201922107881 U CN201922107881 U CN 201922107881U CN 211399799 U CN211399799 U CN 211399799U
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Abstract
The utility model relates to a dry slag discharging system for waste incineration slag, which comprises an incinerator body, a slag discharging machine and an air locking device, the slag extractor comprises a shell, a first feeding hole, a first discharging hole, a roller shaft and a driving motor, wherein the first feeding hole is arranged at the upper part of the shell, and the first feed port is connected with an incinerator slag outlet of the incinerator body, the first discharge port is arranged at the bottom of the shell, the roll shaft is arranged in the shell, the roll shaft is hollow, two ends of the roll shaft are respectively provided with a first water inlet and a first water outlet, one end of the roll shaft is fixedly connected with an output shaft of the driving motor, the interior of the shell is of a hollow structure, and the upper part of one end of the shell is provided with a second water inlet, the lower part of the other end of the shell is provided with a second water outlet, the air-lock device is arranged on the first discharge hole, and a humidifier is arranged at the discharge end of the air-lock device. Adopt dry-type slag tapping system can retrieve the heat, practice thrift a large amount of water resources.
Description
Technical Field
The utility model relates to a waste incinerator sediment handles technical field, especially relates to a dry-type slag discharging system of waste incinerator sediment.
Background
The waste incineration power generation is widely applied in China, and the technology is mature and reliable. The garbage incineration power generation is one of the main methods for treating the urban garbage because the garbage incineration power generation has obvious reduction effect, saves land, can eliminate various pathogens, converts toxic and harmful substances into harmless substances, and can be used for generating power by using the heat energy after the garbage incineration. By the end of 2018, 439 waste incineration power generation projects are put into production in 28 provinces (regions and cities) in China, at present, domestic waste incineration equipment mainly comprises a grate furnace and a fluidized bed furnace, the waste heat value is improved along with the rise of the living standard, a feeding system with tight grate furnace and stable operation hours enable the grate furnace to occupy more than 75% of the waste incineration power plant.
The domestic grate type waste incinerator generally all adopts the Martin mucking machine to slag tap, adopts general industry cooling water direct addition slag to get into the slag pit after cooling the slag from 500 ℃ to about 100 ℃, and this kind of mode has following problem:
1) a certain amount of water is consumed in the wet slag discharging mode, and about 0.4t of water is consumed by each ton of slag, so that the waste of water resources is caused;
2) industrial water is adopted for cooling, so that the heat of the slag cannot be utilized, and energy loss is caused;
3) in order to ensure the negative pressure of the hearth, the Martin slag extractor generally adopts water seal, and water vapor also enters the hearth when industrial water cools slag, so that the humidity of smoke in the furnace is increased, and the corrosion strength and the dust deposition strength of the boiler are improved;
4) the cooled slag enters the slag pit and is also provided with a part of water vapor, dust and water vapor are combined, so that fog in the slag pit is heavy, the visibility is reduced to below 10m in some seasons, and a slag crane operator cannot perform remote control operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a waste incinerator sediment dry-type slag discharging system adopts indirect water cooling system, reduces the water consumption, retrieves the stove heat.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a dry slag discharging system for waste incinerator slag, which comprises an incinerator body, a slag discharging machine and an air lock, the slag extractor comprises a shell, a first feeding hole, a first discharging hole, a roller shaft and a driving motor, wherein the first feeding hole is arranged at the upper part of the shell, and the first feed port is connected with a slag outlet of the incinerator body, the first discharge port is arranged at the bottom of the shell, the roll shaft is arranged in the shell, the roll shaft is hollow, two ends of the roll shaft are respectively provided with a first water inlet and a first water outlet, one end of the roll shaft is fixedly connected with an output shaft of the driving motor, the interior of the shell is of a hollow structure, and the upper part of one end of the shell is provided with a second water inlet, the lower part of the other end of the shell is provided with a second water outlet, the air-lock device is arranged on the first discharge hole, and a humidifier is arranged at the discharge end of the air-lock device.
By adopting the technical scheme, cooling water is introduced through the first water inlet and the second water inlet before slag discharging, then discharging the slag of the incinerator through a slag outlet into a first feeding hole, starting a driving motor, driving a roller shaft to rotate by the driving motor, wherein the roller shaft has the functions of conveying and crushing the slag, the slag is crushed by the roller shaft and conveyed to a first discharging hole, in the conveying process, the cooling water flowing between the shell and the roller shaft indirectly cools the slag, the cooled slag enters the air lock through the first discharge hole, the air lock can prevent external air from entering the slag extractor and discharging the cooled and crushed slag, the humidifier is arranged at the outlet end of the air locker, the slag is discharged through the air locker after being wetted by the humidifier, the wetted slag can prevent the dust from flying to cause environmental pollution, and the hot water discharged from the first water outlet and the second water outlet is conveyed to a heat recovery system of a power plant for heat recovery and utilization.
Preferably, the roller is conveyed by a single-shaft screw or a double roller.
Adopt above-mentioned technical scheme, according to different demands, can adopt the roller of unipolar or biax.
Preferably, the driving motor is a three-in-one motor.
Adopt above-mentioned technical scheme, adopt trinity motor, have characteristics such as compact structure, transmission moment of torsion are big, work is steady, the noise is low, longe-lived, be fit for as the drive arrangement of mucking machine.
Preferably, the airlock is a star-shaped discharge valve or a screw conveyor.
Preferably, the airlock comprises a discharge motor, a screw rod, a second feed inlet and a second discharge outlet, the discharge motor drives the screw rod to rotate, the second feed inlet is connected with the first discharge outlet, and the humidifier is arranged at the second discharge outlet.
By adopting the technical scheme, after the furnace slag is cooled and crushed, the furnace slag enters the second feeding hole through the first discharging hole, the motor drives the screw rod to rotate, the screw rod conveys the furnace slag to the second discharging hole, and the humidifier at the second discharging hole humidifies the furnace slag and then the furnace slag is discharged through the second discharging hole.
Preferably, valves are arranged at the first water inlet, the first water outlet, the second water inlet and the second water outlet.
By adopting the technical scheme, the valve is opened to circulate the cooling water before the slag discharging machine works, and the valve is closed after the work is finished.
Preferably, a slag outlet of the incinerator body is provided with a material level controller, and the material level controller is in communication connection with the slag discharging machine and the gas locking device.
By adopting the technical scheme, the material level controller in the prior art is adopted, and the motors of the slag extractor and the gas locker are instructed to rotate to start working according to the material level information fed back by the material level controller.
The utility model has the advantages that:
1. the invention recovers the sensible heat of the slag and improves the heat utilization efficiency of the whole plant. The furnace slag is discharged from the furnace grate at about 400 ℃ (complete combustion), if the furnace slag is not completely combusted, the temperature may be 400-500 ℃, and the temperature of the slag cooler discharged from the slag pit is 60-80 ℃. The dry slag tapping system can recover heat and save energy.
2. The invention adopts a fully-closed slag conveying system, thereby avoiding generating water vapor and dust which pollute the environment.
3. The invention uses indirect water cooling system, which saves a large amount of water resource; the wet slag tapping mode needs to consume a certain amount of water, and each ton of slag needs to consume about 0.4t of water, so that the waste of water resources is caused.
4. The invention uses an indirect water cooling system to avoid the moisture of the smoke in the furnace, the corrosion intensity of the boiler and the dust deposition intensity caused by the water vapor entering the hearth when the wet slag is cooled.
Drawings
FIG. 1 is a top view of the dry slag tapping system of the present invention;
FIG. 2 is a front view of the dry slag tapping system of the present invention;
fig. 3 is a schematic cross-sectional view of the slag extractor of the present invention.
Shown in the figure: 1-a slag extractor; 11-a housing; 111-a second water inlet; 112-a second water outlet; 12-a drive motor; 13-a roll shaft; 131-a first water inlet; 132-a first water outlet; 14-a first discharge port; 15-a first feed port; 2-air lock; 21-a discharge motor; 22-screw rod; 23-a second feed port; 24-a second discharge port; and 3, a humidifier.
Detailed Description
As shown in fig. 1-3, an embodiment of the present invention provides a dry slag discharging system for waste incineration slag, which includes an incinerator body (not shown in the figure), a slag discharging machine 1 and an air lock 2, the incinerator is a waste incinerator of a waste power plant in the prior art, a slag outlet of the incinerator is connected to a first feed inlet 15 of the slag discharging machine 1, the slag discharging machine 1 includes a housing 11, the first feed inlet 15, a first discharge outlet 14, a roller 13 and a driving motor 12, the housing 11 of the slag discharging machine 1 is hollow, a second water inlet 111 is formed at an upper portion of one end of the housing 11, the second water inlet 111 penetrates through the housing 11 to be connected with the interior hollow, the second water inlet 111 is connected with a water source of cooling water, a second water outlet 112 connected with the interior hollow is formed at a bottom of the other end of the housing 11, the second water outlet 112 is connected to a, the inside roller 13 that is equipped with of casing 11, the inside cavity of roller 13, roller 13 both ends are equipped with first water inlet 131 and first delivery port 132 respectively, first water inlet 131 is connected with the water source of cooling water, first delivery port 132 leads to pipe connects to the heat recovery system of power plant, roller 13 wherein one end is connected with driving motor 12's output, driving motor 12 drives roller 13 and rotates, there is integrated into one piece's screw on roller 13 surface, a transportation and broken slag, casing 11 bottom is equipped with first discharge gate 14, 14 end connection of first discharge gate has airlock 2, the discharge end of airlock 2 is connected with humidifier 3, airlock 2 is used for discharging the slag, humidifier 3 wets it before the slag is discharged and prevents the smoke and dust from wafting.
In one embodiment, the roller shafts 13 are conveyed by single-shaft screws or double roller shafts 13, and in the embodiment, double roller shaft 13 conveying, namely two roller shafts 13 arranged in parallel, is adopted, so that the conveying efficiency and the crushing effect of the slag are improved.
In one embodiment, the driving motor 12 is a three-in-one motor, and the three-in-one motor has the characteristics of compact structure, large transmission torque, stable work and the like, and is suitable for driving the roller shaft 13 to rotate.
In one embodiment, the airlock 2 is a star discharge valve or a screw conveyor, and in this embodiment, the airlock 2 is a screw conveyor.
The gas locking device 2 comprises a discharging motor 21, a screw rod 22, a second feeding hole 23 and a second discharging hole 24, the second feeding hole 23 is connected with the first discharging hole 14, furnace slag enters the second feeding hole 23 through the first discharging hole 14, the furnace slag enters the gas locking device 2 through the second feeding hole 23, the discharging motor 21 drives the screw rod 22 to rotate to transport the furnace slag, a humidifier 3 is arranged at a position close to the second discharging hole 24, and the furnace slag is discharged from the second discharging hole 24 after being humidified.
In one embodiment, valves are disposed at the first water inlet 131, the first water outlet 132, the second water inlet 111 and the second water outlet 112.
In one embodiment, a material level controller (not shown in the figure) is arranged at a slag outlet of the incinerator body, the material level controller is in communication connection with the slag tapping machine 1 and the gas locking device 2, the material level controller is a material level controller in the prior art, the discharging speed of the slag in the incinerator is controlled, and the slag tapping machine 1 and the gas locking device 2 are started to work according to material level information fed back by the material level controller.
The utility model discloses a theory of operation: slag enters the slag extractor 1 from the incinerator through the first feeding hole 15, cooling water enters the slag extractor 1 through the first water inlet 131 and the second water inlet 111 respectively and enters the slag extractor 1 in two paths, one path enters the central sleeve of the roller shaft 13, and the other path enters the jacket of the shell of the slag extractor 1. The cooling water after absorbing heat is discharged to the heat recovery system of the power plant through the first water outlet 132 and the second water outlet 112. After being cooled, the slag is discharged to the air lock 2 through a slag discharge port and then is discharged to a slag pool through a humidifier.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. The utility model provides a waste incinerator sediment dry-type slag tapping system which characterized in that: including burning furnace body, mucking machine and air-lock ware, the mucking machine includes casing, first feed inlet, first discharge gate, roller and driving motor, first feed inlet set up in casing upper portion, just first feed inlet and the slag exit linkage who burns burning furnace body, first discharge gate set up in the casing bottom, the roller set up in inside the casing, the inside cavity of roller and both ends are equipped with first water inlet and first delivery port respectively, roller one end with driving motor's output shaft fixed connection, the casing is inside to be the cavity formula structure, just the upper portion of casing one end is equipped with the second water inlet, the lower part of the casing other end is equipped with the second delivery port, the air-lock ware set up in on the first discharge gate, the discharge end of air-lock ware is equipped with the humidifier.
2. The dry slag tapping system for waste incineration slag according to claim 1, wherein: the roller is conveyed by a single-shaft screw or a double-roller shaft.
3. The dry slag tapping system for waste incineration slag according to claim 1, wherein: the driving motor is a three-in-one motor.
4. The dry slag tapping system for waste incineration slag according to claim 1, wherein: the air lock is a star-shaped discharge valve or a screw conveyor.
5. The dry slag tapping system for waste incineration slag according to claim 4, wherein: the gas locking device comprises a discharge motor, a screw rod, a second feed inlet and a second discharge outlet, the discharge motor drives the screw rod to rotate, the second feed inlet is connected with the first discharge outlet, and the humidifier is arranged at the second discharge outlet.
6. The dry slag tapping system for waste incineration slag according to claim 1, wherein: and valves are arranged at the first water inlet, the first water outlet, the second water inlet and the second water outlet.
7. The dry slag tapping system for waste incineration slag according to claim 1, wherein: and a slag outlet of the incinerator body is provided with a material level controller, and the material level controller is in communication connection with the slag extractor and the gas locker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922107881.8U CN211399799U (en) | 2019-11-29 | 2019-11-29 | Dry-type slag discharging system for waste incineration slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922107881.8U CN211399799U (en) | 2019-11-29 | 2019-11-29 | Dry-type slag discharging system for waste incineration slag |
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| Publication Number | Publication Date |
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| CN211399799U true CN211399799U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922107881.8U Active CN211399799U (en) | 2019-11-29 | 2019-11-29 | Dry-type slag discharging system for waste incineration slag |
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| CN (1) | CN211399799U (en) |
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