CN212327928U - Device for removing SO3 in flue gas of coal-fired boiler by using white mud and red mud - Google Patents
Device for removing SO3 in flue gas of coal-fired boiler by using white mud and red mud Download PDFInfo
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- CN212327928U CN212327928U CN201921923499.8U CN201921923499U CN212327928U CN 212327928 U CN212327928 U CN 212327928U CN 201921923499 U CN201921923499 U CN 201921923499U CN 212327928 U CN212327928 U CN 212327928U
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Abstract
The utility model discloses a coal-fired boiler flue gas SO removal by white mud and red mud3The device of (2), including the rubbing crusher, the discharge gate fixedly connected with lifting machine of rubbing crusher, the discharge gate on lifting machine top passes through the feed inlet of a pipeline fixed connection feed bin, the discharge gate of feed bin bottom passes through the feed inlet of two fixed connection screw feeders of pipeline, the discharge gate of screw feeder passes through the feed inlet of three fixed connection ball mills of pipeline, the discharge gate of ball mill passes through the feed inlet of four fixed connection graders of pipeline, the feed inlet of five fixed connection screw reclaimers of pipeline is passed through to the bottom of grader, the feed inlet of six fixed connection ball mills of pipeline is passed through to the discharge gate of screw reclaimer. The device has scientific and reasonable structure, can make the white mud and the red mud into ultrafine powder, and can lead the white mud fine powder, the red mud fine powder and SO in the flue gas3Fully react to SO in the flue gas3Good removing effect, changes the white mud and the red mud into valuable, and greatly reduces the flue gas SO of the coal-fired boiler3The cost is removed, and the method is suitable for popularization and application.
Description
Technical Field
The utility model relates to a desorption coal fired boiler flue gas SO3In particular to a device for removing SO in flue gas of a coal-fired boiler by using white mud and red mud3The apparatus of (1).
Background
SO is contained in flue gas of coal-fired boiler of power plant3Need to be removed, and currently, the SO in the flue gas of coal burning boilers3The cost of removal is high, mainly more alkaline materials are consumed. The white mud is solid waste residue generated in the alkali recovery process of pulping and papermaking enterprises, and the main component of the white mud is CaCO3At present, most of white mud generated by pulping and papermaking enterprises in China is buried, on one hand, land resources are occupied, and on the other hand, the cost of the buried disposal is high; the red mud is the polluting waste residue discharged when the aluminum oxide is extracted in the aluminum production industry, generally 1 ton of aluminum oxide is produced on average, 1.0-2.0 tons of red mud are additionally produced, China is used as the 4 th alumina producing country in the world, the red mud discharged every year is up to millions of tons, a large amount of red mud is piled up and occupies the land, the ecological environment is damaged, the alkalinity of the red mud is high, and the attached alkali of the red mud and CaO and Al in the red mud are utilized2O3，Na2O and the like can effectively remove SO in the flue gas3White mud and red mud can be used as SO in coal-fired flue gas3The material can be removed, thereby changing waste into valuable and greatly reducing SO in the coal-fired flue gas3The cost of desorption, for this reason, the utility model provides an utilize white mud, red mud desorption coal fired boiler flue gas SO3The apparatus of (1).
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a method for removing the flue gas SO of a coal-fired boiler by using white mud and red mud3The device solves the problem of SO in the existing coal-fired flue gas3The removal needs more alkaline materials and has higher cost.
The utility model provides a technical scheme that above-mentioned problem adopted is: method for removing SO in flue gas of coal-fired boiler by using white mud and red mud3The device comprises a pulverizer and is characterized in that a discharge port of the pulverizer is fixedly connected with an elevator, a discharge port at the top end of the elevator is fixedly connected with a feed inlet of a bin through a first pipeline, a discharge port at the bottom end of the bin is fixedly connected with a feed inlet of a spiral feeder through a second pipeline, a discharge port of the spiral feeder is fixedly connected with a feed inlet of a ball mill through a third pipeline, a discharge port of the ball mill is fixedly connected with a feed inlet of a classifier through a fourth pipeline, a bottom end of the classifier is fixedly connected with a feed inlet of a spiral material returning machine through a fifth pipeline, a discharge port of the spiral material returning machine is fixedly connected with a feed inlet of the ball mill through a sixth pipeline, a discharge port of the classifier is fixedly connected with a feed inlet of a cyclone collector through a seventh pipeline, and a discharge port, pulse collector's discharge gate department fixedly connected with fan, cyclone collector and pulse collector's bottom difference fixedly connected with pipeline nine and pipeline ten, the bottom difference fixedly connected with storage tank of pipeline nine and pipeline ten, the gas outlet of pipeline eleven fixed connection air pumps is passed through to one side of storage tank, discharging pipe fixedly connected with main pipeline is passed through to the bottom of storage tank, the bottom fixedly connected with branch pipeline of main pipeline says, divide the pipeline to say thatThe bottom of the spraying pipe is uniformly and fixedly connected with a plurality of spraying pipes, and the bottom of each spraying pipe is fixedly connected with a plurality of spray heads respectively.
Further, the ball mill is an ultra-fine ball mill.
Furthermore, electromagnetic valves are respectively and fixedly installed on the fifth pipeline, the ninth pipeline and the tenth pipeline.
Further, the air pump is a high-pressure air pump.
Further, the branch pipeline is of an inverted T-shaped structure, and a plurality of branch pipelines are arranged.
Furthermore, a plurality of material spraying pipes at the bottom end of the branch pipeline are distributed in a step shape according to length.
Compared with the prior art, the utility model, have following advantage and effect:
1. dry method for removing SO by using white mud and red mud3The white mud and the red mud are used as consumed alkaline materials, so that waste is treated by waste, and the cost is greatly reduced.
2. Adopt superfine ball mill and grader to make the alkaline absorbent granule that white mud and red mud were prepared be less than 10 mu m, alkaline absorbent granule particle diameter is the smaller moreover, and is higher with sulfur trioxide's degree of contact to the reaction effect is better, and whole device can be opened promptly simultaneously, convenient operation.
3. For current wet process injection technique, the utility model discloses the preparation does not increase the water content in the flue gas to can not cause the flue gas temperature to reduce, avoid causing the flue afterbody to corrode.
4. The grid type injection system can fully mix the fine white mud powder and the fine red mud powder with the flue gas in the flue SO as to treat SO in the flue gas3The removal is carried out very well.
Drawings
Fig. 1 is a schematic view of the overall structure of an apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of a material storage box according to an embodiment of the present invention;
fig. 3 is a schematic structural view of the device of the embodiment of the present invention applied to a flue system of a coal-fired boiler.
In the figure: 1-pulverizer, 2-elevator, 3-pipeline one, 4-bunker, 5-spiral feeder, 6-ball mill, 7-pipeline two, 8-pipeline three, 9-pipeline four, 10-classifier, 11-pipeline five, 12-spiral material-returning machine, 13-pipeline six, 14-electromagnetic valve, 15-pipeline seven, 16-cyclone collector, 17-pipeline eight, 18-pulse dust remover, 19-blower, 20-pipeline nine, 21-pipeline ten, 22-material storage box, 23-pipeline eleven, 24-air pump, 25-discharge pipe, 26-main pipeline, 27-branch pipeline, 28-spray pipe, 29-spray head, 30-coal-fired boiler, 31-flue, 32-economizer, 33-SCR reactor, 34-air preheater, 35-electric dust removal, 36-desulfurizing tower and 37-chimney.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1 to 3, it can be known that: in the embodiment, the white mud and the red mud are utilized to remove the SO in the flue gas of the coal-fired boiler3The device of (1), including rubbing crusher 1, rubbing crusher 1 can smash cubic lime mud and red mud, the discharge gate fixedly connected with lifting machine 2 of rubbing crusher 1, lifting machine 2 can carry the material in feed bin 4, the discharge gate on 2 tops of lifting machine passes through the feed inlet of pipeline 3 fixed connection feed bin 4, the discharge gate of 4 bottoms of feed bin passes through the feed inlet of two 7 fixed connection screw feeder 5 of pipeline, screw feeder 5 can be toward defeated pay-off in the ball mill 6, the discharge gate of screw feeder 5 passes through the feed inlet of three 8 fixed connection ball mills 6 of pipeline, ball mill 6 can be ground the material intoPowder, the discharge hole of the ball mill 6 is fixedly connected with the feed inlet of the classifier 10 through a pipeline four 9, the classifier 10 can carry out thickness classification on the powder of the white mud and the red mud, the bottom end of the classifier 10 is fixedly connected with the feed inlet of the spiral material returning machine 12 through a pipeline five 11, the spiral material returning machine 12 can send the powder with larger particles back to the feed inlet of the ball mill 6, the discharge hole of the spiral material returning machine 12 is fixedly connected with the feed inlet of the ball mill 6 through a pipeline six 13, the discharge hole of the classifier 10 is fixedly connected with the feed inlet of the cyclone collector 16 through a pipeline seven 15, the cyclone collector 16 can dry and primarily collect the ultrafine powder of the white mud and the red mud, the discharge hole of the cyclone collector 16 is fixedly connected with the feed inlet of the pulse dust collector 18 through a pipeline eight 17, the pulse dust collector 18 can completely collect the ultrafine powder of the white mud and the red mud, and, the fan 19 can provide the power of collecting the powder for pulse dust collector 18, the bottom of cyclone 16 and pulse dust collector 18 is fixedly connected with pipeline nine 20 and pipeline ten 21 respectively, the bottom of pipeline nine 20 and pipeline ten 21 is fixed connection to material storage box 22 respectively, material storage box 22 can save the superfine powder of lime mud and red mud, the gas outlet of pipeline eleven 23 fixed connection air pump 24 is passed through to one side of material storage box 22, air pump 24 can provide power for spouting the material, material storage box 22's bottom is through discharging pipe 25 fixedly connected with main pipeline 26, the bottom fixedly connected with branch pipeline 27 of main pipeline 26, the even fixedly connected with in bottom of branch pipeline 27 spouts a plurality of material pipes 28, the bottom of a plurality of material pipes 28 is fixedly connected with a plurality of shower nozzles 29 respectively, shower nozzle 29 is convenient for spout the material.
The ball mill 6 is an ultrafine ball mill, which is convenient for grinding the white mud and red mud powder into particles with the diameter less than 10 mu m; the pipeline five 11, the pipeline nine 20 and the pipeline ten 21 are respectively and fixedly provided with an electromagnetic valve 14, so that the discharging is conveniently controlled; the air pump 24 is a high-pressure air pump, so that the powder injection effect is good; the branch pipelines 27 are of an inverted T-shaped structure, and are provided with a plurality of pipelines, so that the material can be conveniently divided into a plurality of groups for spraying; the plurality of material spraying pipes 28 at the bottom end of the branch pipe 27 are distributed in a step shape according to the length, so that the white mud and the red mud powder can be uniformly sprayed into the flue 31.
The electrical components in this embodiment are all electrically connected to an external master controller and 220V mains, and the master controller may be a conventional known device such as a computer for controlling.
The utility model discloses a theory of operation and advantage: a coal economizer 32, an SCR reactor 33, an air preheater 34, an electric dust remover 35, a desulfurizing tower 36 and a chimney 37 are sequentially arranged on a flue 31 of a coal-fired boiler 30 in a power plant, a material spraying pipe 28 is respectively and fixedly arranged in the flue 31 between the coal economizer 32 and the SCR reactor 33, the flue 31 between the SCR reactor 33 and the air preheater 34, the flue 31 between the air preheater 34 and the electric dust remover 35 and the flue 31 between the electric dust remover 35 and the desulfurizing tower 36, when in work, large white mud or red mud is put into a crusher 1 for crushing, then white mud or red mud fragments are lifted by a lifter 2, the white mud or red mud enters a bin 4 through a pipeline I3, white mud or red mud fragments in the bin 4 enter a spiral feeder 5 through a pipeline II 7 and then enter a ball mill 6 through a pipeline III 8, the white mud or red mud fragments are ground into powder by the ball mill 6, become alkaline absorbent particles, then the alkaline absorbent particles enter a classifier 10 through a pipeline four 9, the classifier 10 classifies the alkaline absorbent particles, the alkaline absorbent particles with the diameter larger than 10 mu m enter a pipeline five 11, enter a spiral material returning machine 12 through an electromagnetic valve 14, return to a ball mill 6 through a spiral material returning machine 12 and a pipeline six 13, and then are continuously ground into powder, the alkaline absorbent particles with the diameter smaller than 10 mu m in the classifier 10 enter a cyclone collector 16 through a pipeline seven 15, the cyclone collector 16 dries and collects the alkaline absorbent particles, then the alkaline absorbent particles pass through the electromagnetic valve 14 through a pipeline nine 20 and are conveyed into a storage box 22, some ultra-fine alkaline absorbent particles are absorbed by a pulse dust collector 18 in the cyclone collector 16, the pulse dust collector 18 collects the ultra-fine alkaline absorbent particles and then passes through the electromagnetic valve 14 through a pipeline ten 21 and is conveyed into the storage box 22, the fan 19 provides power for collecting alkaline absorbent particles for the device, the alkaline absorbent particles in the storage box 22 pass through the discharge pipe 25, the main pipe 26, the branch pipes 27 and the spray pipe 28 under the action of the air pump 24 and then are sprayed out from the spray head 29, and the alkaline absorbent particles sprayed out from the spray head 29 are uniformly distributed in the flue 31 and are filled in the flue 31With SO in flue gas in flue duct 313Reaction is carried out, and the reaction product is removed. The utility model has the advantages of being scientific and reasonable in structure, can make white mud and red mud into superfine powder, and can let the SO in white mud farine and red mud farine and flue gas3Fully react to SO in the flue gas3Good removing effect, changes the white mud and the red mud into valuable, and greatly reduces the flue gas SO of the coal-fired boiler 303The cost is removed, and the method is suitable for popularization and application.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should not be construed as being limited to the scope of the present invention, and any modifications and alterations made by those skilled in the art without departing from the spirit and scope of the present invention should fall within the scope of the present invention.
Claims (6)
1. Method for removing SO in flue gas of coal-fired boiler by using white mud and red mud3The device comprises a pulverizer (1) and is characterized in that a discharge port of the pulverizer (1) is fixedly connected with an elevator (2), a discharge port at the top end of the elevator (2) passes through a feed inlet of a first pipeline (3) fixedly connected with a bin (4), a discharge port at the bottom end of the bin (4) passes through a feed inlet of a second pipeline (7) fixedly connected with a spiral feeder (5), a discharge port of the spiral feeder (5) passes through a feed inlet of a third pipeline (8) fixedly connected with a ball mill (6), a discharge port of the ball mill (6) passes through a feed inlet of a fourth pipeline (9) fixedly connected with a classifier (10), a bottom end of the classifier (10) passes through a feed inlet of a fifth pipeline (11) fixedly connected with a spiral material returning machine (12), and a discharge port of the spiral material returning machine (12) passes through a feed inlet of a sixth pipeline (13) fixedly connected with a ball mill (6), the discharge port of the classifier (10) is fixedly connected with the feed port of the cyclone collector (16) through a seventh pipeline (15), the discharge port of the cyclone collector (16) is fixedly connected with the feed port of the pulse dust collector (18) through an eighth pipeline (17), and the discharge port of the pulse dust collector (18) is fixedly connected with a fan (1)9) The utility model discloses a cyclone collector (16) and pulse dust collector (18) bottom difference fixedly connected with pipeline nine (20) and pipeline ten (21), the bottom difference fixedly connected with storage tank (22) of pipeline nine (20) and pipeline ten (21), the gas outlet of pipeline eleven (23) fixed connection air pump (24) is passed through to one side of storage tank (22), discharging pipe (25) fixedly connected with main pipeline (26) are passed through to the bottom of storage tank (22), the bottom fixedly connected with branch pipeline (27) of main pipeline (26), the even fixedly connected with in bottom of branch pipeline (27) spouts material pipe (28), and is a plurality of the bottom difference fixedly connected with a plurality of shower nozzles (29) of spouting material pipe (28).
2. The method for removing SO from flue gas of coal-fired boiler by using white mud and red mud according to claim 13The device is characterized in that the ball mill (6) is an ultra-fine ball mill.
3. The method for removing SO from flue gas of coal-fired boiler by using white mud and red mud according to claim 13The device is characterized in that the pipeline five (11), the pipeline nine (20) and the pipeline ten (21) are respectively and fixedly provided with an electromagnetic valve (14).
4. The method for removing SO from flue gas of coal-fired boiler by using white mud and red mud according to claim 13The device is characterized in that the air pump (24) is a high-pressure air pump.
5. The method for removing SO from flue gas of coal-fired boiler by using white mud and red mud according to claim 13The device is characterized in that the branch pipeline (27) is of an inverted T-shaped structure, and a plurality of branch pipelines (27) are arranged.
6. The method for removing SO from flue gas of coal-fired boiler by using white mud and red mud according to claim 13The device is characterized in that a plurality of material spraying pipes (28) at the bottom ends of the branch pipes (27) are distributed in a step shape according to the length.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921923499.8U CN212327928U (en) | 2019-11-08 | 2019-11-08 | Device for removing SO3 in flue gas of coal-fired boiler by using white mud and red mud |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921923499.8U CN212327928U (en) | 2019-11-08 | 2019-11-08 | Device for removing SO3 in flue gas of coal-fired boiler by using white mud and red mud |
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| CN212327928U true CN212327928U (en) | 2021-01-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841467A (en) * | 2019-11-08 | 2020-02-28 | 华电电力科学研究院有限公司 | Method for removing SO in flue gas of coal-fired boiler by using white mud and red mud3Apparatus and method of |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110841467A (en) * | 2019-11-08 | 2020-02-28 | 华电电力科学研究院有限公司 | Method for removing SO in flue gas of coal-fired boiler by using white mud and red mud3Apparatus and method of |
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