CN205170889U - Modular dry -type dust collecting equipment - Google Patents
Modular dry -type dust collecting equipment Download PDFInfo
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- CN205170889U CN205170889U CN201521009809.7U CN201521009809U CN205170889U CN 205170889 U CN205170889 U CN 205170889U CN 201521009809 U CN201521009809 U CN 201521009809U CN 205170889 U CN205170889 U CN 205170889U
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Abstract
The utility model provides a modular dry -type dust collecting equipment, box, shutoff including the tube -shape are in the head and the shutoff of box upper shed department are in the ash bucket of box under shed department, set up a sack structure in the box, the lower extreme of sack structure is equipped with the air current entry, it runs through to set up one on the head head and edge the drainage tube that the box axial set up, the upper end of drainage tube is arranged in the outside of head, the under shed of drainage tube is less than the air current entry still set up purified gas export on the head. The utility model discloses enabling the air current and being cushioned in the box, flowing of air current is stable, and the pressure oscillation is less, and has prolonged the life of sack.
Description
Technical field
The utility model relates to the technical field of ferrous metallurgy, particularly a kind of equipment of the dry method dust by textural association.
Background technology
Dry-type dedusting equipment is the visual plant of blast furnace dedusting, and its major function is the dedusting of coal gas dust removal for furnace top even pressure coal-gas recovering technique and other coal gas, thus makes blast furnace all press coal gas to be reclaimed, and production process is continued.Can built-up type dry-type dedusting equipment has stablized the main dependence of all pressing coal-gas recovering technique, all press coal-gas recovering explained hereafter direct motion, efficient and low consumption have very important effect to blast furnace.
Main use three kinds of dry collectors in current blast furnace technology: gravitational precipitator, tornado dust collector, sack cleaner.The dust collection capacity of three kinds of fly-ash separators is successively: cloth bag, whirlwind and gravity.Wherein gravitational precipitator and tornado dust collector are used for raw gas dedusting, and sack cleaner is used for the meticulous dedusting of dry method.
Conventional blast furnace roof all presses coal-gas recovering technological process as follows: after shaft furnace charging system enters batch can charging, coal gas in batch can is not entered air, but all pressures coal gas of discharging from batch can is entered surge tank through coal gas recovery valve etc., then after cloth envelop collector dedusting, enter purified gas pipe network.When the pressure of surge tank and batch can pressure tend to balance, naturally reclaim and just substantially terminate, cut off recovery system by setting pressure, and then by shaft furnace charging program, the coal gas in batch can is diffused.
Coal gas is carried out recovery and enters purified gas pipe network by this technique depended on pressure difference, and owing to devising surge tank, pressure surge is very little on the impact of gaspipe network.But often there is no location arrangements surge tank in actual design and production, make all to press the result of use of the technique of coal-gas recovering influenced.All coal gas is pressed to be pulsed, through accurate calculation coal gas from batch can to surge tank, by intrasystem gaseous equilibrium, before criticality, coal gas in batch can flows to surge tank with local velocity of sound, if do not have surge tank to cushion, certainly not little to the impact of gaspipe network, this all presses coal-gas recovering can not the major reason of life-time service just both at home and abroad.
In addition, traditional dry bag-type dust remover is the filter type that side is entered side and gone out, and the shortcoming that side goes out is entered in side: air-flow is flowing instability in cylinder, and gas is even not, and repeated stock cloth bag, is unfavorable for the life-span of sack cleaner.
Utility model content
For the technical problem solved, the utility model proposes a kind of built-up type dry-type dedusting equipment, air-flow can be made to be buffered in casing, the flowing of air-flow is stablized, and pressure surge is less, and extends the work-ing life of cloth bag.
A kind of built-up type dry-type dedusting equipment of the present utility model, comprises the casing of tubular, shutoff at the end socket of described casing upper shed place and the shutoff ash bucket at described casing lower opening;
In described casing, arrange a cloth bag structure, the lower end of described cloth bag structure is provided with air flow inlet; Described end socket arranges one and runs through described end socket and the drainage tube axially arranged along described casing, the upper end of described drainage tube is placed in the outside of described end socket, the lower opening of described drainage tube, lower than described air flow inlet, described end socket also arranges a purified gas outlet.
Further, described drainage tube comprises the diversion section and breeze way that connect successively from top to bottom, and described diversion section is cylindrical shape, and the frustum-like shape of described breeze way diametrically downward flaring, the lower opening of described breeze way is positioned at the below of described air flow inlet.
Further, described drainage tube is vertically applied in the center of described end socket.
Further, the top of described cloth bag structure arranges a back-blowing mechanism, and described back-blowing mechanism comprises at least two loading lines be arranged on described casing, and one end of each described loading line is placed in described casing, and the other end is placed in outside described casing; Each described loading line arranges pulse valve respectively, and described pulse valve is placed in the outside of described casing, is controlled the flow of gas in described loading line by described pulse valve.
Further, described loading line is evenly arranged along the circumference of described casing.
Further, described loading line is placed in one end in described casing near the upper end of described cloth bag structure.
Further, described cloth bag structure comprises the multiple turbogrid plates be vertically fixed on respectively on described cabinet wall and the multiple filter bags be hung on each described turbogrid plates; Multiple described turbogrid plates are evenly laid along the radial direction of described casing and surround gas channel, and multiple described filter bag is arranged along the axially spaced-apart of described casing on each described turbogrid plates, and described air flow inlet is arranged on the lower opening of described gas channel.
Further, described filter bag adopts polyfluortetraethylefilm film coated or hydrophobic nature filter paper.
Further, described ash bucket, in the taper of reducing from top to bottom, the outer wall of described ash bucket arranges steam coils.
Further, the sidewall of described casing arranges at least two through quick opening manholes, and each described quick opening manhole is arranged along the axially spaced-apart of described casing.
The utility model is compared to the beneficial effect of prior art: the utility model is in drainage tube and in the bottom of casing and in the formation buffer area, below of cloth bag structure, have the effect of similar surge tank.Arrange cloth bag structure at the middle part of casing, emission coal gas is buffered backward upper inflow cloth bag structure, is exported export after cloth bag structured filter by the purified gas on end socket.Therefore, built-up type dry-type dedusting equipment of the present utility model by the function i ntegration of surge tank and dry bag-type dust remover to together with, do not need to arrange independently surge tank for buffer gas flow, save space and cost, alleviate the nervous problem of land used, also there is the function of the thick dedusting of gravity, the dedusting of dry bag-type essence.
Simultaneously, air-flow is mode that jacking ejects in built-up type dry-type dedusting equipment, the mode that side goes out is entered compared to prior art side, the jiggly air-flow of high speed is buffered in casing, release certain pressure, stability of flow is high, air pressure evenly, can not repeated stock cloth bag structure, extend the work-ing life of cloth bag structure.Structure of the present utility model is simple, simply can transform, provide cost savings on the basis of existing dust removal installation.
Accompanying drawing explanation
Fig. 1 is the structural representation of built-up type dry-type dedusting equipment of the present utility model;
Fig. 2 is the air motion direction schematic diagram of built-up type dry-type dedusting equipment of the present utility model.
Reference numeral:
10-casing; 12-quick opening manhole; 20-end socket; 30-ash bucket; 40-drainage tube; 42-diversion section;
44-breeze way; 50-purified gas exports; 60-cloth bag structure; 62-turbogrid plates; 64-filter bag;
70-back-blowing mechanism; 72-loading line; 74-pulse valve; 80-steam coils.
Embodiment
Below in conjunction with accompanying drawing, to above-mentioned being clearly and completely described with other technical characteristic and advantage of the utility model, obviously, described embodiment is only section Example of the present utility model, instead of whole embodiment.
Refer to shown in Fig. 1, a kind of built-up type dry-type dedusting equipment, comprise the casing 10 of tubular, end socket 20 and ash bucket 30, end socket 20 shutoff is in casing 10 upper shed place, and ash bucket 30 shutoff is at casing 10 lower opening.In casing 10, arrange a cloth bag structure 60, the lower end of cloth bag structure 60 is provided with air flow inlet.End socket 20 arranges the drainage tube 40 of consistent Chuanfeng 20, drainage tube 40 is axially arranged along casing 10, the upper end of drainage tube 40 is placed in the outside of end socket 20, and the lower opening of drainage tube 40, lower than the air flow inlet of cloth bag structure 60, end socket 20 also arranges a purified gas outlet 50.
Refer to shown in Fig. 2, the upper end of drainage tube 40 is connected by pipeline with extraneous batch can, as shown by the arrows in Figure 2, in casing 10, inputs emission coal gas, and purified gas outlet 50 is for carrying purified gas to purified gas pipe network.The utility model is in drainage tube 40 and in the formation buffer area, below of cloth bag structure 60, have the effect of similar surge tank.The air flow inlet of the lower end of cloth bag structure 60 is higher than the lower opening of drainage tube 40, in the present embodiment, cloth bag structure 60 is arranged on the middle part of casing 10, emission coal gas after the bottom of casing 10 is buffered on flow into the air flow inlet of cloth bag structure 60, export from the upper end of cloth bag structure after cloth bag structure 60 is filtered, then export 50 outputs by the purified gas on end socket 20.As shown in the arrow of bottom in Fig. 2, drop on the gas ash in ash bucket 30 and discharge from the taper osculum of ash bucket 30 lower end.
Blast furnace all presses coal-gas recovering processing requirement dust removal device to have following performance: 1, have sufficient buffer area, reduces the pressure surge of gas; 2, during work, the impact of high flow rate can be resisted; 3, cost is low, maintenance management is convenient, technique is simple.
Built-up type dry-type dedusting equipment of the present utility model by the function i ntegration of surge tank and dry bag-type dust remover to together with, do not need to arrange independently surge tank for buffer gas flow, save space and cost, alleviate the nervous problem of land used, also there is the function of the thick dedusting of gravity, the dedusting of dry bag-type essence.Simultaneously, air-flow is mode that jacking ejects in built-up type dry-type dedusting equipment, the mode that side goes out is entered compared to prior art side, the jiggly air-flow of high speed is buffered in casing 10, release certain pressure, stability of flow is high, air pressure evenly, can not repeated stock cloth bag structure 60, extend the work-ing life of cloth bag structure 60.Structure of the present utility model is simple, simply can transform, provide cost savings on the basis of existing dust removal installation.
Further, drainage tube 40 comprises the diversion section 42 and breeze way 44 that connect successively from top to bottom, and diversion section 42 is in cylindrical shape, and the frustum-like shape of breeze way 44 diametrically flaring downwards, the lower opening of breeze way 44 is positioned at the below of the air flow inlet of cloth bag structure 60.Breeze way 44 makes emission coal gas evenly be spread in the bottom of casing 10, thus reaches the object of buffering.
Further, drainage tube 40 is vertically applied in the center of end socket 20, and drainage tube 40 is for injecting emission coal gas, and drainage tube 40 is arranged on the center of end socket 20, be conducive to emission coal gas and be evenly diffused into the surrounding of drainage tube 40 in the bottom of casing 10, make buffering more abundant.
Further, the top of cloth bag structure 60 arranges a back-blowing mechanism 70, and back-blowing mechanism 70 comprises at least two loading lines 72 be arranged on casing 10, and one end of each loading line 72 is placed in casing 10, and the other end is placed in outside casing 10; Each loading line 72 arranges pulse valve 74 respectively, and pulse valve 74 is placed in the outside of casing 10, is controlled the flow of gas in loading line 72 by pulse valve 10.
Further, loading line 72 is evenly arranged along the circumference of casing 10.Central authorities due to casing 10 are provided with drainage tube 40, air-flow is injected by the upper end of drainage tube 40, air-flow loss everywhere can enter the air flow inlet of cloth bag structure 60 from all directions, loading line 72 is evenly arranged in the axis of casing 10, purge gas arrives the regional of cloth bag structure 60 to avoid drainage tube 40 to stop, blowback air physical efficiency enters cloth bag structure 60 uniformly and stably, thus alleviates the impact to cloth bag structure 60.
Further, loading line 72 is placed in one end in casing 10 near the upper end of cloth bag structure 60, and the rapid contact action of purge gas can be made in cloth bag structure 60.
Further, cloth bag structure 60 comprises the multiple turbogrid plates 62 be vertically fixed on respectively on casing 10 inwall and the multiple filter bags 64 be hung on each turbogrid plates 62.Multiple turbogrid plates 62 are evenly laid along the radial direction of casing 10 and surround gas channel, and multiple filter bag 64 is arranged along the axially spaced-apart of casing 10 on each turbogrid plates 62, and air flow inlet is arranged on the lower opening of gas channel.Because drainage tube 40 is positioned at the center of gas channel in the present embodiment, gas channel ringwise.Usually the mode of automatic back blow or manual blowback can be adopted, when on filter bag 64, the dust of deposition reaches certain resistance, automatic or manual opens pulse valve, purge gas (as nitrogen) is filled with in filter bag 64, reach the object of filtering deashing, the dust under clear is directly to falling into ash bucket 30.
Further, filter bag 64 adopts polyfluortetraethylefilm film coated (i.e. PTFE overlay film) or hydrophobic nature filter paper, can effectively prevent from boning between filter bag 64.
Built-up type dry-type dedusting equipment of the present utility model is first in the thick dedusting of bottom gravity of casing 10, remove the coke grain of oarse-grained grit and burning, avoid burn coke and macrobead grit to the damage of cloth bag, recycling cloth bag structure 60 carries out smart dedusting, the coal gas of recovery is entered purified gas pipe network, and combine with gravitational dust collection after the lower buffer of casing 10, make pressure surge very little on the impact of gaspipe network.This structure is well suited for the low discharge of furnace top even pressure coal-gas recovering, HI high impact, multi-frequency (pressure-equalizing and discharging per hour 10 ~ 12 times), and pressure surge is large, and the stock gas that dust quantity is little reclaims operating mode.
Built-up type dry-type dedusting equipment of the present utility model possesses sufficient surge capability and good dust removal performance simultaneously, meets and all presses coal gas to carry out the double requirements of dedusting recovery simultaneous buffering gas pressure to blast furnace roof.Overcome that blast furnace roof all presses that coal-gas recovering pressure surge is large, air-flow periodically, multiple requesting that instantaneous delivery is large, be applicable to furnace top even pressure coal-gas recovering technique.In addition, do not change existing cloth bag structure 60, do not need to relate to complicated device aperture.Comprehensively it seems, the utility model can save equipment cost, and unit area building cost is about 60% of surge tank and dry bag-type dust remover overall cost, and be about 1.1 times of common dry bag-type dust remover, cost performance is high.
Further, ash bucket 30, in the taper of reducing from top to bottom, the outer wall of ash bucket arranges steam coils 80.
Further, the sidewall of casing 10 arranges at least two through quick opening manholes 12, and each quick opening manhole 12 is arranged along the axially spaced-apart of casing 10.On casing 10, the state of each part in casing 10 can be observed by opening quick opening manhole 12, also conveniently can carry out routine maintenance.
Use procedure of the present utility model is as follows:
The coal gas (all pressing coal gas) of dust-laden is entered by the upper shed of the drainage tube 40 of built-up type dry-type dedusting equipment, lower opening through the breeze way 44 (tubaeform) of flaring is derived, because the cross-sectional area sudden enlargement of breeze way 44 can suitable buffer gas flow, buffering is continued in the bottom that air-flow enters casing 10, air-flow velocity is reduced, air flow direction can turn an angle, by revolving the air flow inlet that turnback upwards flows into cloth bag structure 60 vertically downward when entering, thick grit in coal gas and the coke grain of burning are then because quality is larger, subsiding movement is done under the effect of mass force, be deposited to the ash bucket 30 of shutoff below built-up type dry-type dedusting equipment, realize dirt, gas is separated, thus reach the object of thick dedusting.
After the stream pressure of dust-laden half purified gas of above-mentioned process reduces, cloth bag structure 60 is entered by the air flow inlet of cloth bag structure 60 lower end, carry out Bag filter dedusting, coal gas passes the wall of filter bag 64 by under dust filter, exported by the outlet of cloth bag structure 60 upper end, again enter casing 10 and become purified gas by purified gas outlet 50 output on end socket 20.Coal gas after filter bag 64 dedusting enters purified gas pipe network from purified gas outlet 50 through piping.Pressure through the clean gas of built-up type dry-type dedusting equipment formation is comparatively balanced, purified gas pipe network is not almost had to the impact of pressure surge.
When the grey film on filter bag 64 thickens impact filtration, start back-blowing mechanism 70 and carry out blowback.Simultaneously because gas volume during thick dedusting increases, pressure reduces, thus reduces the impact of high pressure gas to filter bag 64, improves the work-ing life of filter bag 64.
Above-described specific embodiment; further detailed description has been carried out to the purpose of this utility model, technical scheme and beneficial effect; should be appreciated that and the foregoing is only specific embodiment of the utility model, and be not used in restriction protection domain of the present utility model.Particularly point out, to those skilled in the art, all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a built-up type dry-type dedusting equipment, is characterized in that, described built-up type dry-type dedusting equipment comprises the casing of tubular, shutoff at the end socket of described casing upper shed place and the shutoff ash bucket at described casing lower opening;
In described casing, arrange a cloth bag structure, the lower end of described cloth bag structure is provided with air flow inlet; Described end socket arranges one and runs through described end socket and the drainage tube axially arranged along described casing, the upper end of described drainage tube is placed in the outside of described end socket, the lower opening of described drainage tube, lower than described air flow inlet, described end socket also arranges a purified gas outlet.
2. built-up type dry-type dedusting equipment according to claim 1, it is characterized in that, described drainage tube comprises the diversion section and breeze way that connect successively from top to bottom, described diversion section is cylindrical shape, the frustum-like shape of described breeze way diametrically downward flaring, the lower opening of described breeze way is positioned at the below of described air flow inlet.
3. built-up type dry-type dedusting equipment according to claim 1, is characterized in that, described drainage tube is vertically applied in the center of described end socket.
4. built-up type dry-type dedusting equipment according to claim 1, it is characterized in that, the top of described cloth bag structure arranges a back-blowing mechanism, described back-blowing mechanism comprises at least two loading lines be arranged on described casing, one end of each described loading line is placed in described casing, and the other end is placed in outside described casing; Each described loading line arranges pulse valve respectively, and described pulse valve is placed in the outside of described casing, is controlled the flow of gas in described loading line by described pulse valve.
5. built-up type dry-type dedusting equipment according to claim 4, is characterized in that, described loading line is evenly arranged along the circumference of described casing.
6. built-up type dry-type dedusting equipment according to claim 4, is characterized in that, described loading line is placed in one end in described casing near the upper end of described cloth bag structure.
7. built-up type dry-type dedusting equipment according to claim 1, is characterized in that, described cloth bag structure comprises the multiple turbogrid plates be vertically fixed on respectively on described cabinet wall and the multiple filter bags be hung on each described turbogrid plates; Multiple described turbogrid plates are evenly laid along the radial direction of described casing and surround gas channel, and multiple described filter bag is arranged along the axially spaced-apart of described casing on each described turbogrid plates, and described air flow inlet is arranged on the lower opening of described gas channel.
8. built-up type dry-type dedusting equipment according to claim 7, is characterized in that, described filter bag adopts polyfluortetraethylefilm film coated or hydrophobic nature filter paper.
9. built-up type dry-type dedusting equipment according to claim 1, is characterized in that, described ash bucket, in the taper of reducing from top to bottom, the outer wall of described ash bucket arranges steam coils.
10. the built-up type dry-type dedusting equipment according to any one of claim 1 to 8, is characterized in that, the sidewall of described casing arranges at least two through quick opening manholes, and each described quick opening manhole is arranged along the axially spaced-apart of described casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009809.7U CN205170889U (en) | 2015-12-08 | 2015-12-08 | Modular dry -type dust collecting equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521009809.7U CN205170889U (en) | 2015-12-08 | 2015-12-08 | Modular dry -type dust collecting equipment |
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| CN205170889U true CN205170889U (en) | 2016-04-20 |
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| CN201521009809.7U Active CN205170889U (en) | 2015-12-08 | 2015-12-08 | Modular dry -type dust collecting equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349723A (en) * | 2015-12-08 | 2016-02-24 | 中冶京诚工程技术有限公司 | Combined type dry dust removal equipment |
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2015
- 2015-12-08 CN CN201521009809.7U patent/CN205170889U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105349723A (en) * | 2015-12-08 | 2016-02-24 | 中冶京诚工程技术有限公司 | Combined type dry dust removal equipment |
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