CN211903501U - Coal slime slag mixing and drying device - Google Patents
Coal slime slag mixing and drying device Download PDFInfo
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- CN211903501U CN211903501U CN202020466115.0U CN202020466115U CN211903501U CN 211903501 U CN211903501 U CN 211903501U CN 202020466115 U CN202020466115 U CN 202020466115U CN 211903501 U CN211903501 U CN 211903501U
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Abstract
The utility model relates to a coal slime fast drying technical field, concretely relates to coal slime slag mixes drying device. Including mixing heat transfer storehouse, sediment storehouse, coal slime and storing transport storehouse, overgrate air input pipeline and start bed feed bin, set up slag inlet and coal slime import on the lateral wall about mixing heat transfer storehouse respectively, correspond through the pipeline respectively and be connected to sediment storehouse and coal slime and store the transport storehouse, the slag notch has been seted up to the bottom in sediment storehouse, the flue gas discharge port has been seted up at the top in mixing heat transfer storehouse, through pipe connection to afterbody flue, the overgrate air input port has been seted up to the bottom in mixing heat transfer storehouse, overgrate air input port and overgrate air input pipeline intercommunication, install extraction air temperature heating device on the overgrate air input pipeline on the position that is close to the overgrate air input port, mix the heat transfer storehouse and seted up the mixture delivery outlet on being close to the lateral wall of bottom, communicate to start bed feed bin through the pipeline. The utility model discloses, simple to operate has great economic benefits and productivity effect.
Description
Technical Field
The utility model relates to a coal slime fast drying technical field, concretely relates to coal slime slag mixes drying device.
Background
Nowadays, with the new energy such as wind-powered electricity generation and photovoltaic power generation popularized gradually, traditional thermal power plant lifts step and difficultly, adds present environmental protection pressure surge for coal cost of transportation greatly increases, and the cost of electricity generation promotes by a wide margin. After the 'deep peak regulation' transformation of the circulating fluidized bed unit, the output of equipment is greatly idle in the deep peak regulation period (the load of the unit is reduced to 30% of the rated load), and no effective utilization means is available. Many thermal power plants use regional advantages to mix and burn local coal slime for reducing power generation cost. But the coal slime has larger water content, a large amount of coal slime is not sent into a hearth by a feasible method, and a small amount of mixed combustion has no obvious help to reduce the cost.
Therefore, it is necessary to solve the above problems.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a coal slime slag mixes drying device has solved current thermal power plant and can't a large amount of, the problem of fast drying when mixing and burning the coal slime, the utility model discloses a technical scheme as follows:
the utility model provides a coal slime slag mixes drying device, stores transport bin, overgrate air input pipeline and start bed feed bin including mixing heat transfer storehouse, sediment storehouse, coal slime, mix and seted up slag inlet and coal slime import on the lateral wall about the heat transfer storehouse respectively, correspond through the pipeline respectively and be connected to sediment storehouse and coal slime and store transport bin, the slag notch has been seted up to the bottom in sediment storehouse, the flue gas discharge port has been seted up at the top in mixing heat transfer storehouse, through the pipe connection to afterbody flue, the overgrate air input port has been seted up to the bottom in mixing heat transfer storehouse, overgrate air input port and overgrate air input pipeline intercommunication, install extraction air temperature heating device on the overgrate air input pipeline on the position that is close to the overgrate air input port, mix the heat transfer storehouse and seted up the mixture delivery outlet on being close to the lateral wall of bottom, communicate to start bed feed bin through the pipeline.
An air bag dust removal device is mounted on a pipeline between a flue gas outlet at the top of the mixed heat exchange bin and a tail flue, the bottom of the air bag dust removal device is connected with a material return pipe, and the air bag dust removal device is connected with the mixed heat exchange bin through the material return pipe.
And a pneumatic actuator is arranged on a pipeline communicated between the slag bin and the mixed heat exchange bin, and the pneumatic actuator is an electromagnetic control valve and can control the starting and stopping of the discharging.
And a coal slime screw feeder is arranged on a pipeline communicated between the coal slime storage and conveying bin and the mixed heat exchange bin, and can quantitatively guide the coal slime into the mixed heat exchange bin.
And a bin pump is arranged on a pipeline from the mixture output port to the starting bed bin, generates compressed air and quickly conveys mixed particles to the starting bed bin.
And a blast cap is arranged above the secondary air input port and used for compressing and pressurizing secondary air entering the mixed heat exchange bin.
The positions of the mixed heat exchange bin close to the bottom and the top are respectively provided with a temperature measuring element, and the temperature measuring elements are used for performing anti-abrasion treatment and monitoring the temperature of the upper mixture and the lower mixture in real time.
And a humidity sensor is also arranged on the flue gas output pipeline at the top of the mixed heat exchange bin to judge the humidity of the slag and coal slime mixture.
The steam extraction air temperature heating device is a 5-extraction heat exchanger.
Compared with the prior art, the utility model discloses the beneficial effect who has does:
1. the utility model discloses a slag and the coal slime of circulating fluidized bed boiler mix, and the overgrate air double heat transfer after 5 sections steam extraction heat exchanger heat exchanges mixes, can furthest improve heat transfer speed, makes the drying rate of coal slime faster.
2. The utility model discloses utilize circulating fluidized bed boiler to discharge the high characteristics of slag temperature, mix through slag and coal slime, make full use of boiler slag waste heat realizes the waste heat recovery of slag, makes the heat transfer process more energy-conserving.
3. The utility model discloses a overgrate air and hood dual action make coal slime and slag be in the fluidization suspended state in the heat exchanger, obtain the intensive mixing, and the heat transfer is even more quick, makes the stoving of coal slime and slag more even.
4. The utility model discloses an utilize the dual detection effect of temperature measurement component and moisture detector, the coal slime degree of drying is judged to the accuracy more, avoids the stoving time too short or overlength, makes the stoving process more intelligent.
To sum up, the utility model relates to an ingenious, simple to operate has great economic benefits and productivity effect, is fit for using widely on a large scale at circulating fluidized bed thermal power plant.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: the system comprises a mixed heat exchange bin 1, a slag bin 2, a coal slime storage and conveying bin 3, a secondary air input pipeline 4, a start bed bin 5, a steam extraction air temperature heating device 6, an air bag dust removal device 7, a material return pipe 8, a pneumatic actuator 9, a coal slime screw feeder 10, a bin pump 11, an air cap 12, a temperature measuring element 13 and a humidity sensor 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the utility model provides a coal slime slag mixes drying device, store transport bin 3, overgrate air input pipeline 4 and start-up bed feed bin 5 including mixing heat transfer bin 1, sediment storehouse 2, coal slime, the body of mixing heat transfer bin 1 adopt the structure similar to circulating fluidized bed boiler, seted up slag inlet and coal slime import on controlling the lateral wall respectively, correspond to be connected to sediment storehouse 2 and coal slime through the pipeline respectively and store transport bin 3, the slag notch has originally been seted up to the bottom in sediment storehouse 2, the utility model discloses in an export is opened in addition on the right side of original slag notch, through pipe connection to mixing heat transfer bin 1 to adopt opening of pneumatic actuator 9 control blowing to open and stop, pneumatic actuator 9 is solenoid electric valve, can realize automatic control.
The coal slime is stored and is provided with coal slime screw feeder 10 on the pipeline of intercommunication between transport storehouse 3 and the mixed heat transfer storehouse 1, can carry out quantitative control to the coal slime of leading-in mixed heat transfer storehouse 1, and when the coal slime in the storehouse was not discharged, the coal slime was not leading-in mixed heat transfer storehouse 1.
The top of the mixed heat exchange bin 1 is provided with a flue gas outlet and is connected to the tail flue through a pipeline, an air bag dust removal device 7 is installed on the pipeline between the flue gas outlet at the top of the mixed heat exchange bin 1 and the tail flue, the bottom of the air bag dust removal device 7 is connected with a material return pipe 8, and the air bag dust removal device 7 is connected with the mixed heat exchange bin 1 through the material return pipe 8. Dust and flue gas that produce after the mixed heat transfer filter through the sack dust collector 7 of upper right corner connection, get rid of dust and flue gas, and large granule slag is carried once more to mixed heat transfer storehouse 1 heat transfer once more through feed back pipe 8, realizes the circulation stoving coal slime.
The bottom of the mixed heat exchange bin 1 is provided with a secondary air input port, the secondary air input port is communicated with a secondary air input pipeline 4, a steam extraction air temperature heating device 6 is arranged on the position, close to the secondary air input port, of the secondary air input pipeline 4, in the utility model, the steam extraction air temperature heating device 6 uses a 5-extraction heat exchanger, the 5-extraction heat exchanger of the utility model heats secondary air by utilizing 5-stage steam extraction of a steam turbine intermediate pressure cylinder, a header device is adopted, a loop-shaped heating pipe is arranged inside, 5-stage steam extraction is circulated in the pipe, secondary air heated by an air preheater is circulated in the header, blown secondary air is rapidly dehydrated while ensuring rapid mixing of slag and coal slime, the overall efficiency of the heat exchanger is improved to realize the temperature rise of the secondary air, the secondary air is guided into the mixed heat exchange bin 1 for drying the coal slime, and the extracted steam after heat exchange is sent into a deaerator to continuously participate in acting, and the heated air temperature is automatically adjusted through the drain door. Furthermore, a blast cap 12 is arranged above the secondary air input port, and secondary air entering the mixed heat exchange bin 1 is compressed and pressurized, so that the slag and coal slime mixture is rotationally mixed in the heat exchanger at a high speed.
Mix and seted up the mixture delivery outlet on the lateral wall that the heat transfer storehouse 1 is close to the bottom, communicate to start-up bed feed bin 5 through the pipeline, install bin pump 11 on the pipeline of mixture delivery outlet to start-up bed feed bin 5, bin pump 11 is used for the transport of stoving coal slime slag mixing particle, and under the compressed air effect, the mixture granule is the fluidization state, is convenient for dry mixing particle and carries to giving start-up bed feed bin 5 fast.
The positions of the mixed heat exchange bin 1 close to the bottom and the top are respectively provided with a temperature measuring element 13, and the temperature measuring elements 13 are used for performing anti-abrasion treatment and monitoring the temperature of an upper mixture and a lower mixture in real time; still install humidity transducer 14 on the flue gas output pipeline at mixed heat transfer storehouse top, judge slag coal slime mixture humidity, will reach the coal slime slag mixture of appointed requirement and carry to for starting bed feed bin 5 through storehouse pump 11, further send into the boiler burning.
The design principle of the utility model is that:
the utility model utilizes the slag of the circulating fluidized bed boiler and the coal slime to carry out mixed heat exchange, the coal slime is stored in the conveying bin 3 and is used for storing the coal slime, the slag bin 2 is internally stored with the slag, during the operation, the coal slime is conveyed into the mixed heat exchange bin 1 and is simultaneously mixed with the waste slag, the coal slime is prevented from being adhered in the feeder due to large water content to block the feeder, the coal slime can be conveniently mixed in the heat exchanger, the reliable supply of the coal slime is ensured, the secondary air after 5 sections of steam extraction and heating is utilized to stir and dry the mixture, the pressure is applied through the air cap 12, the purpose of quickly drying the coal slime is achieved, the temperature measuring element 13 is arranged at the upper and lower mixture positions in the mixed heat exchange bin,
a humidity detector 14 is arranged in front of a bag-type dust collector in an upper flue, the drying degree of coal slime is comprehensively judged, and the coal slime reaches the standard and is conveyed to a starting bed material bin 5 through a bin pump 12 and a pipeline connected with the bin pump for combustion of a boiler.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (9)
1. The utility model provides a coal slime slag mixes drying device which characterized in that: comprises a mixed heat exchange bin (1), a slag bin (2), a coal slime storage conveying bin (3), a secondary air input pipeline (4) and a starting bed bin (5), wherein a slag inlet and a coal slime inlet are respectively formed in the left side wall and the right side wall of the mixed heat exchange bin (1), the mixed heat exchange bin is correspondingly connected to the slag bin (2) and the coal slime storage conveying bin (3) through pipelines respectively, a slag outlet is formed in the bottom of the slag bin (2), a flue gas outlet is formed in the top of the mixed heat exchange bin (1), the mixed heat exchange bin is connected to a tail flue through a pipeline, a secondary air input port is formed in the bottom of the mixed heat exchange bin (1), the secondary air input port is communicated with the secondary air input pipeline (4), a steam extraction air temperature heating device (6) is installed on the position, close to the secondary air input port, of the mixed heat exchange bin (1) is close to the side wall of the bottom, and a mixture output port, is communicated to a starting bed bin (5) through a pipeline.
2. The coal slime slag mixing and drying device of claim 1, which is characterized in that: an air bag dust removal device (7) is mounted on a pipeline between a flue gas outlet at the top of the mixed heat exchange bin (1) and a tail flue, a material return pipe (8) is connected to the bottom of the air bag dust removal device (7), and the air bag dust removal device (7) is connected with the mixed heat exchange bin (1) through the material return pipe (8).
3. The coal slime slag mixing and drying device of claim 1, which is characterized in that: and a pneumatic actuator (9) is arranged on a pipeline communicated between the slag bin (2) and the mixed heat exchange bin (1), and the pneumatic actuator (9) is an electromagnetic control valve and can control the starting and stopping of the discharging.
4. The coal slime slag mixing and drying device of claim 1, which is characterized in that: and a coal slime screw feeder (10) is arranged on a pipeline communicated between the coal slime storage and conveying bin (3) and the mixed heat exchange bin (1), and can quantitatively guide coal slime into the mixed heat exchange bin (1).
5. The coal slime slag mixing and drying device of claim 1, which is characterized in that: the device is characterized in that a bin pump (11) is installed on a pipeline from the mixture output port to the starting bed material bin (5), the bin pump (11) generates compressed air, and mixed particles are rapidly conveyed to the starting bed material bin (5).
6. The coal slime slag mixing and drying device of claim 1, which is characterized in that: and a blast cap (12) is arranged above the secondary air input port, and is used for compressing and pressurizing secondary air entering the mixed heat exchange bin (1).
7. The coal slime slag mixing and drying device of claim 1, which is characterized in that: the mixed heat exchange bin (1) is close to the positions of the bottom and the top and is respectively provided with a temperature measuring element (13), and the temperature measuring element (13) is used for performing anti-abrasion treatment and monitoring the temperature of the upper mixture and the lower mixture in real time.
8. The coal slime slag mixing and drying device of claim 1, which is characterized in that: and a humidity sensor (14) is also arranged on the flue gas output pipeline at the top of the mixed heat exchange bin to judge the humidity of the slag and coal slime mixture.
9. The coal slime slag mixing and drying device of claim 1, which is characterized in that: the steam extraction air temperature heating device (6) is a 5-extraction heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466115.0U CN211903501U (en) | 2020-04-02 | 2020-04-02 | Coal slime slag mixing and drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020466115.0U CN211903501U (en) | 2020-04-02 | 2020-04-02 | Coal slime slag mixing and drying device |
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| CN211903501U true CN211903501U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020466115.0U Active CN211903501U (en) | 2020-04-02 | 2020-04-02 | Coal slime slag mixing and drying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432408A (en) * | 2021-08-25 | 2021-09-24 | 山东蓝湾新材料有限公司 | Polyacrylamide is dry with segmentation heating heat baker |
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2020
- 2020-04-02 CN CN202020466115.0U patent/CN211903501U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432408A (en) * | 2021-08-25 | 2021-09-24 | 山东蓝湾新材料有限公司 | Polyacrylamide is dry with segmentation heating heat baker |
| CN113432408B (en) * | 2021-08-25 | 2021-11-05 | 山东蓝湾新材料有限公司 | Polyacrylamide is dry with segmentation heating heat baker |
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