CN203428454U - Fine-ash pneumatic conveying system for converter gas dry dedusting - Google Patents
Fine-ash pneumatic conveying system for converter gas dry dedusting Download PDFInfo
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- CN203428454U CN203428454U CN201320381702.XU CN201320381702U CN203428454U CN 203428454 U CN203428454 U CN 203428454U CN 201320381702 U CN201320381702 U CN 201320381702U CN 203428454 U CN203428454 U CN 203428454U
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Abstract
The utility model relates to a fine-ash pneumatic conveying system for converter gas dry dedusting. The fine-ash pneumatic conveying system for converter gas dry dedusting comprises a dry bag dust collector (1), an ash discharging pipe (5), a bin pump (10), a pneumatic conveying pipe (16) and a fine-ash bin (17), wherein the dry bag dust collector (1), the ash discharging pipe (5), the bin pump (10), the pneumatic conveying pipe (16) and the fine-ash bin (17) are connected in sequence. The pneumatic conveying pipe (16) is connected with a gas storage tank (13). An inlet of the gas storage tank (13) is connected with a first nitrogen pipe (12). An inlet of the first nitrogen pipe (12) is connected with a nitrogen general pipe. The bin pump (10) is connected with the fine-ash bin (17) through the pneumatic conveying pipe (16). According to the fine-ash pneumatic conveying system for converter gas dry dedusting, the dry bag dust collector is applied, spark discharge does not exist, and the problem that an electrostatic precipitator is prone to explosion venting is solved; the link of conveyance of fine ash is omitted, the fault rate of the device is greatly reduced, and ash storage and ash conveyance of the fine-ash bin are not limited by a field and a distance.
Description
Technical field
The utility model relates to environmental protection equipment field, more particularly, relates to the thin grey air-transport system of a kind of dry dedusting of converter.
Background technology
Along with the continuous reinforcement of environmental consciousness, converter newly-built and reconstruction adopts dry method dust mostly.The existing thin grey conveying technology of dry method dust is: the thin ash that electrostatic precipitator is collected is delivered to the thin ash silo outside main building by built-in chain-linked conveyer, pneumatic gate valve, pneumatic double-layer flap valve, outside chain conveyer, conveyor screw, bucket elevator, and thin ash is directly transported outward comprehensive application by vacuum suction and discharge tank car.
The problem that the existing thin grey conveying technology of dry method dust mainly exists: the one, the easy venting of dust explosion of electrostatic precipitator, equipment easily damages, and has a strong impact on converter and normally produces; The 2nd, outside thin grey load transfer device fault rate is high, and often card ash, has a strong impact on converter and normally produce; The 3rd, the storage ash of thin ash and fortune ash are subject to the restriction of place and distance; The 4th, each the price of vacuum suction and discharge tank car of the grey use of fortune is 1,000,000 yuan of left and right, and investment cost is higher.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned defect of prior art, provides a kind of dry dedusting of converter thin grey air-transport system.
The utility model solves the technical scheme that its technical matters adopts: construct the thin grey air-transport system of a kind of dry dedusting of converter, comprise dry-process filter bag dust remover, the first horizontal chain conveyer, the second horizontal chain conveyer, cut out chain-linked conveyer, ash-unloading tube, storehouse pump, pneumatic carrier and thin ash silo;
Described the first horizontal chain conveyer and the second horizontal chain conveyer are horizontally set on described dry-process filter bag dust remover below; The described chain-linked conveyer that cuts out is horizontally set on the first horizontal chain conveyer and the second horizontal chain conveyer below;
Described in described storehouse pump is arranged on, cut out the below of chain-linked conveyer, described in cut out chain-linked conveyer cinder-discharging port and storehouse pump intake by described, unload ash supervisor and be connected, described in unload ash and be responsible for and be provided with pneumatic gate valve and the first Pneumatic double gate valve; Pump top, described storehouse is provided with the first vacuum pressure Dump valve;
Described pneumatic carrier is connected with storage tank, and the entrance of described storage tank is connected with the first nitrogen tube, and the entrance of described the first nitrogen tube is connected with nitrogen header pipe; Described storehouse pump is connected by pneumatic carrier with thin ash silo, and described pneumatic carrier is provided with the second Pneumatic double gate valve, and pump bottom in described storehouse is provided with first class device;
The nitrogen tube of described storage tank outlet is divided into two-way ，Yi road and is connected with described first class device, and another road is connected with described pneumatic carrier, between described storage tank and storehouse pump, is provided with pneumatic ball valve;
Described thin ash silo top is provided with top, storehouse bag dust collector and the second vacuum pressure Dump valve, under described thin ash silo, in cone bucket, be provided with second gasifying device, the cinder-discharging port of the lower cone bucket of described thin ash silo bottom is connected with the second hand operated gate valve entrance, and described the second hand operated gate valve outlet is connected with dust humidifying agitator entrance; The outlet of described dust humidifying agitator is connected by ash releasing tube with canvas hose entrance;
Described nitrogen header pipe is also connected with the second nitrogen tube entrance, and described the second nitrogen tube outlet is divided into two-way ，Yi road and is connected with second gasifying device, and another Lu Yucang top bag dust collector connects;
Between the second nitrogen tube and second gasifying device, establish pressure regulating valve and electromagnetic valve.
In the thin grey air-transport system of dry dedusting of converter described in the utility model, described in cut out chain-linked conveyer and be provided with the first accident and unload ash supervisor, described the first accident is unloaded ash supervisor and is provided with the first hand operated gate valve.
In the thin grey air-transport system of dry dedusting of converter described in the utility model, under described thin ash silo, cone bucket is provided with the second accident and unloads ash supervisor, and described the second accident is unloaded ash supervisor and is provided with the 5th hand operated gate valve.
In the thin grey air-transport system of dry dedusting of converter described in the utility model, pump bottom in described storehouse is provided with drain hose.
Implement the thin grey air-transport system of dry dedusting of converter of the present utility model, there is following beneficial effect:
1, the utility model adopts dry-process filter bag dust remover, and no spark discharges, and has thoroughly solved the problem of the easy venting of dust explosion of electrostatic precipitator.
2, the utility model has reduced the conveying process of thin ash, has greatly reduced the fault rate of equipment.
3, thin ash silo both can be placed in converter main building, also can be placed on outside converter main building, and storage ash and fortune ash are not subject to the restriction of place and distance.
4, the present invention adopts after dust humidifying agitator, can adopt common bulk cement truck fortune ash, greatly reduces investment, cost-saving.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the thin grey air-transport system of the utility model dry dedusting of converter.
The specific embodiment
For technical characterictic of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing and describe the specific embodiment of the present utility model in detail.
As shown in Figure 1, the thin grey air-transport system of dry dedusting of converter of the present utility model comprise dry-process filter bag dust remover 1, the first horizontal chain conveyer 2, the second horizontal chain conveyer 3, cut out chain-linked conveyer 4, ash-unloading tube 5, storehouse pump 10, pneumatic carrier 16 and thin ash silo 17.
Horizontal chain conveyer 2 and the second horizontal chain conveyer 3 are horizontally set on dry-process filter bag dust remover 1 below, cut out chain-linked conveyer 4 and be horizontally set on the first horizontal chain conveyer 2 and the second horizontal chain conveyer 3 belows, storehouse pump 10 is arranged on the below that cuts out chain-linked conveyer 4, and the cinder-discharging port that cuts out chain-linked conveyer 4 is connected by unloading ash supervisor 5 with storehouse pump 10 entrances.Unload ash supervisor 5 and be provided with pneumatic gate valve 6 and the first Pneumatic double gate valve 7.When pneumatic gate valve 6 and the first Pneumatic double gate valve 7 are opened, the thin ash cutting out in chain-linked conveyer 4 enters in storehouse pump 10 by unloading ash supervisor 5.Pump 10 tops in storehouse are provided with the first vacuum pressure Dump valve 11, can prevent that pump 10 internal pressures in storehouse are excessive.
Pneumatic carrier 16 is connected with storage tank 13, and the entrance of storage tank 13 is connected with the first nitrogen tube 12, and the entrance of the first nitrogen tube 12 is connected with nitrogen header pipe.Storehouse pump 10 is connected by pneumatic carrier 16 with thin ash silo 17, and pneumatic carrier 16 is provided with the second Pneumatic double gate valve 15, and pump 10 bottoms in storehouse are provided with first class device.
The nitrogen tube of storage tank 13 outlets is divided into two-way ，Yi road and is connected with first class device, and another road is connected with pneumatic carrier 16, between storage tank 13 and storehouse pump 10, is provided with pneumatic ball valve 14.
Thin ash silo 17 tops are provided with top, storehouse bag dust collector 18 and the second vacuum pressure Dump valve 19.Top, storehouse bag dust collector 18 is for collecting the dust at thin ash silo 17 tops.The second vacuum pressure Dump valve 19 is excessive for preventing thin ash silo 17 internal pressures.In 17 times cone buckets of thin ash silo, be provided with second gasifying device 29, the cinder-discharging port of 17 times cone buckets of thin ash silo is connected with the second hand operated gate valve 20 entrances, the second hand operated gate valve 20 outlets are connected with dust humidifying agitator 21 entrances, and the outlet of dust humidifying agitator 21 is connected by ash releasing tube 22 with canvas hose 23 entrances.
Nitrogen header pipe is also connected with the second nitrogen tube 26 entrances, and the second nitrogen tube 26 outlets are divided into two-way ，Yi road and are connected with second gasifying device 29, and another Lu Yucang top bag dust collector 18 connects.Between the second nitrogen tube 26 and second gasifying device 29, establish pressure regulating valve 27 and electromagnetic valve 28.
In the utility model, the thin grey air-transport system of dry dedusting of converter carries the technological process of thin ash as follows:
Dry-process filter bag dust remover 1 → the first horizontal chain conveyer 2/ second horizontal chain conveyer 3 → cut out chain-linked conveyer 4 cinder-discharging ports → ash-unloading tube 5 → pneumatic gate valve 6 → the first Pneumatic double gate valve 7 → storehouse pump 10 → the second Pneumatic double gate valve 15 → pneumatic carriers 16 → thin ash silo 17 → the second hand operated gate valve 20 → dust humidifying agitator 21 → ash releasing tube 22 → canvas hoses 23.
Dust-laden raw coke oven gas is when the dry-process filter bag dust remover 1, and 65%～75%(is generally 70%) particle dust under filtration, by filter bag, trapped, by falling into horizontal chain conveyer after nitrogen blowback or mechanical vibrator; Particle dust temperature is 100～200 ℃ (being generally 150 ℃); Particle dust bulk density 1.3～1.8t/m3; Particle dust water ratio 1%～2%.
Cut out chain-linked conveyer 4 and converter process chain, in the operation of smelting period.Thin ash enters storehouse pump 10 through wet cooling tower 1 time cone bucket cinder-discharging port, ash-unloading tube 5, pneumatic gate valve 6 and the first Pneumatic double gate valve 7, the first horizontal chain conveyer 2 or the second horizontal chain conveyer 3, cut out chain-linked conveyer 4 cinder-discharging ports, ash-unloading tube 5, pneumatic gate valve 6 and the first Pneumatic double gate valve 7 and enter storehouse pump 10, after pump 10 material in storehouse are full, after first class device fluidisation, by pneumatic carrier 16, deliver to thin ash silo 17.In storehouse pump 10, also level-sensing device 3 can be set, by level-sensing device 3, detect the thin ash amount in storehouse pump 10.While opening electromagnetic valve 28, second gasifying device 29 spray low-pressure nitrogens, can reduce the temperature of thin ash silo 17 interior thin ashes, also can fluidisation ash carefully, be convenient to unload ash.The thin ash that top, storehouse bag dust collector 18 is collected is delivered to thin ash silo 17 bottoms by the second nitrogen tube 26, guarantees the thin ash discharging fully fast in thin ash silo 17, reduces residual.By pressure regulating valve 27, can regulate the intake of nitrogen.Unload ash and adopt common bulk cement truck fortune ash, thin ash, after dust humidifying agitator 21 humidifications, joins in bulk cement truck by ash releasing tube 22 and canvas hose 23.
Further, cut out chain-linked conveyer 4 and be provided with the first accident and unload ash supervisor 8, described the first accident is unloaded ash supervisor 8 and is provided with the first hand operated gate valve 9.During 10 maintenance of storehouse pump, thin ash is discharged from the first accident ash-unloading tube 8 and the first hand operated gate valve 9.
Further, pump 10 bottoms in storehouse also can arrange drain hose, for discharging the ponding in storehouse pump 10.
Further, 17 times cone buckets of thin ash silo are provided with the second accident ash-unloading tube 24, the second accident ash-unloading tubes 24 and are provided with the 3rd hand operated gate valve 25.During thin ash silo 17 maintenance, thin ash is discharged through thin ash silo 17 times cone bucket accident cinder-discharging ports, the second accident ash-unloading tube 24 and the 3rd hand operated gate valves 25.
Further, pump 10 materials in storehouse are 16MnR or Q235B or spheroidal graphite iron or corrosion-resistant steel.Storehouse pump 10 capacity: 1.0～10m
3; Storehouse pump 10 quantity>=1, can a plurality ofly be used in combination.Pneumatic carrier 16 adopts containing manganese solid drawn pipe, elbow, threeway wear-resistant ceramic of lining material, and pipe bending radius >=10 times pipe diameter, pipeline has choke preventing function.
Storehouse pump 10 adopts the mode of carrying of being interrupted, and every conveying is thin ash once, is a cyclic process, and each circulation is divided into 4 steps:
1, charging: pneumatic gate valve 6 and the first Pneumatic double gate valve 7 are opening, pneumatic ball valve 14 and the second Pneumatic double gate valve 15 are closed, thin ash enters storehouse pump 10 under Action of Gravity Field, when level-sensing device 3 that storehouse pump 10 carries detect material full after, send signal and pass through PLC programming control, automatically close the first Pneumatic double gate valve 7, fill process finishes.
2, fluidisation: pneumatic ball valve 14 is opened, nitrogen enters the first class device in storehouse pump 10 from storage tank 13, the abundant fluidisation of thin ash in storehouse pump 10, pressure constantly raises, when pressure rises to setting operation pressure, by PLC programming control, automatically open second Pneumatic double gate valve 15 at storehouse pump 10 sidepiece discharging opening places, fluid mapper process finishes, and enters course of conveying.
3, carry: after the second Pneumatic double gate valve 15 is opened, the uniform gas ash of fluidisation compound is delivered to thin ash silo 17 by pneumatic carrier 16, and now the pressure in storehouse pump 10 keeps stable.After gas ash compound in storehouse pump 10 has been carried, the resistance of pneumatic carrier 16 declines, the pressure of pneumatic carrier 16 starts to reduce, when being reduced to the threshold pression of setting, course of conveying finishes, enter purge, now pneumatic ball valve 14 and the second Pneumatic double gate valve 15 still remain on opening.
4, purge: nitrogen continues purge bin pump 10 and pneumatic carrier 16, now storehouse pump 10 is interior without flying dust, gas ash compound in pneumatic carrier 16 reduces gradually, all almost finally nitrogen, systemic resistance continues to decline and after a period of stabilisation, purge finishes, and closes pneumatic ball valve 14 and the second Pneumatic double gate valve 15, then open the first Pneumatic double gate valve 7, storehouse pump 10 recovers feed state.So far, comprise that a delivery cycle of step finishes, restart next circulation.
Converter in the thin grey air-transport system of the utility model dry dedusting of converter is defined as: decarburization converter or dephosphorization converter or lava homogenizing furnace or stainless steel.Air-transport system of the present utility model is applicable to the conveying of the thin ash of a dry fume dedusting of 80t～300t converter.The about 300m of its fed distance, the about 30m of climb altitude.Its pumped (conveying) medium adopts low-pressure nitrogen, nitrogen pressure >=0.6MPa.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (4)
1. the thin grey air-transport system of dry dedusting of converter, it is characterized in that, comprise dry-process filter bag dust remover (1), the first horizontal chain conveyer (2), the second horizontal chain conveyer (3), cut out chain-linked conveyer (4), ash-unloading tube (5), storehouse pump (10), pneumatic carrier (16) and thin ash silo (17);
Described the first horizontal chain conveyer (2) and the second horizontal chain conveyer (3) are horizontally set on described dry-process filter bag dust remover (1) below; The described chain-linked conveyer (4) that cuts out is horizontally set on the first horizontal chain conveyer (2) and the second horizontal chain conveyer (3) below;
Described in being arranged on, described storehouse pump (10) cuts out the below of chain-linked conveyer (4), the described cinder-discharging port that cuts out chain-linked conveyer (4) and storehouse pump (10) entrance are unloaded ash supervisor (5) and are connected by described, described in unload ash and be responsible for (5) and be provided with pneumatic gate valve (6) and the first Pneumatic double gate valve (7); Described storehouse pump (10) top is provided with the first vacuum pressure Dump valve (11);
Described pneumatic carrier (16) is connected with storage tank (13), and the entrance of described storage tank (13) is connected with the first nitrogen tube (12), and the entrance of described the first nitrogen tube (12) is connected with nitrogen header pipe; Described storehouse pump (10) is connected by pneumatic carrier (16) with thin ash silo (17), and described pneumatic carrier (16) is provided with the second Pneumatic double gate valve (15), and described storehouse pump (10) bottom is provided with first class device;
The nitrogen tube of described storage tank (13) outlet is divided into two-way ，Yi road and is connected with described first class device, and another road is connected with described pneumatic carrier (16), between described storage tank (13) and storehouse pump (10), is provided with pneumatic ball valve (14);
Described thin ash silo (17) top is provided with top, storehouse bag dust collector (18) and the second vacuum pressure Dump valve (19), in the lower cone bucket of described thin ash silo (17), be provided with second gasifying device (29), the cinder-discharging port of the lower cone bucket of described thin ash silo (17) bottom is connected with the second hand operated gate valve (20) entrance, and described the second hand operated gate valve (20) outlet is connected with dust humidifying agitator (21) entrance; The outlet of described dust humidifying agitator (21) is connected by ash releasing tube (22) with canvas hose (23) entrance;
Described nitrogen header pipe is also connected with the second nitrogen tube (26) entrance, and described the second nitrogen tube (26) outlet is divided into two-way ，Yi road and is connected with second gasifying device (29), and another Lu Yucang top bag dust collector (18) connects;
Between the second nitrogen tube (26) and second gasifying device (29), establish pressure regulating valve (27) and electromagnetic valve (28).
2. the thin grey air-transport system of dry dedusting of converter according to claim 1, it is characterized in that, the described chain-linked conveyer (4) that cuts out is provided with the first accident and unloads ash supervisor (8), and described the first accident is unloaded ash supervisor (8) and is provided with the first hand operated gate valve (9).
3. the thin grey air-transport system of dry dedusting of converter according to claim 1, it is characterized in that, the lower cone bucket of described thin ash silo (17) is provided with the second accident and unloads ash supervisor (24), and described the second accident is unloaded ash supervisor (24) and is provided with the 3rd hand operated gate valve (25).
4. the thin grey air-transport system of dry dedusting of converter according to claim 1, is characterized in that, described storehouse pump (10) bottom is provided with drain hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381702.XU CN203428454U (en) | 2013-06-28 | 2013-06-28 | Fine-ash pneumatic conveying system for converter gas dry dedusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381702.XU CN203428454U (en) | 2013-06-28 | 2013-06-28 | Fine-ash pneumatic conveying system for converter gas dry dedusting |
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| Publication Number | Publication Date |
|---|---|
| CN203428454U true CN203428454U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320381702.XU Withdrawn - After Issue CN203428454U (en) | 2013-06-28 | 2013-06-28 | Fine-ash pneumatic conveying system for converter gas dry dedusting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332458A (en) * | 2013-06-28 | 2013-10-02 | 中冶南方工程技术有限公司 | Pneumatic conveying system for removing dust and fine ash in dry process of converter gas |
-
2013
- 2013-06-28 CN CN201320381702.XU patent/CN203428454U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103332458A (en) * | 2013-06-28 | 2013-10-02 | 中冶南方工程技术有限公司 | Pneumatic conveying system for removing dust and fine ash in dry process of converter gas |
| CN103332458B (en) * | 2013-06-28 | 2015-09-02 | 中冶南方工程技术有限公司 | The thin grey air-transport system of a kind of dry dedusting of converter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140212 Effective date of abandoning: 20150902 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140212 Effective date of abandoning: 20150902 |
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| RGAV | Abandon patent right to avoid regrant |