CN203790715U - Gravitational dust remover - Google Patents
Gravitational dust remover Download PDFInfo
- Publication number
- CN203790715U CN203790715U CN201420167273.0U CN201420167273U CN203790715U CN 203790715 U CN203790715 U CN 203790715U CN 201420167273 U CN201420167273 U CN 201420167273U CN 203790715 U CN203790715 U CN 203790715U
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- Prior art keywords
- cylindrical shell
- air inlet
- gravitational precipitator
- top cylindrical
- dust
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Abstract
The utility model provides a gravitational dust remover which comprises a body, an intake pipe diameter, an intake pipe, an outlet pipe, a debris cleaning door and a dust discharging device, wherein the body comprises an upper barrel and a lower taper; the lower taper is connected to the lower part of the upper barrel, so that the body forms a cavity structure; the intake pipe diameter is positioned in the upper barrel; the intake pipe is connected with the intake pipe diameter to feed crude gas; the outlet pipe is connected with the upper barrel to discharge flue gas subjected to dust removal; the debris cleaning door is positioned on the sidewall of the lower taper; the dust discharging device is connected to the bottom end of the lower taper; at least one of the inner and outer walls of the intake pipe diameter and the inner wall of the body is coated with an anticorrosive and high-temperature-resistant protective layer; the lower end face of the intake pipe diameter is lower than a joint of the outlet pipe and the upper barrel. According to the gravitational dust remover, large-grained dust and large debris can be effectively isolated and rapidly cleaned.
Description
Technical field
The utility model relates to dedusting technology field, particularly relates to a kind of gravitational precipitator.
Background technology
In blast furnace ironmaking process, discharge a large amount of coal gas from furnace roof, wherein contain the fuel gas such as CO, can be used as the fuel of hot-blast stove, coke oven, heating furnace etc., but the raw gas temperature that furnace roof is discharged is 150 DEG C, mark state contains the about 10-40g/m of dust
3if, directly use, understand blocking pipe, and can cause the erosion damage of the firebrick lining such as hot-blast stove and burner, must after deduster dedusting, could use as fuel.Raw coke oven gas enters in deduster, and bulky grain dust is deposited to bottom under the effect of gravity and inertia, discharges comparatively clean flue gas.
Deduster is the equipment that dust is separated from flue gas, and gravitational precipitator is a kind of conventional mechanical collector.From the angle of operation principle, gravitational precipitator is the gravitational settling by means of dust, reduces suddenly air-flow velocity and change to flow to, larger dust granules is under gravity and inertia force effect, separate with flue gas, be deposited to deduster cone bottom point, thereby dust is separated from gas.For improving gravitational dust collection effect, often need to strengthen the height of gravitational precipitator body, take up space large, operating cost is high.In addition, gravitational precipitator is generally used for the comparatively primary treatment of mal-condition gas, process gas conventionally with the characteristic such as high temperature, corrosion, need be at inner body wall anticorrosion with painting or exotic material for processing this type of gas, be subject to the effects such as air scour, there will be part obscission at dedusting spray paint in service, very easily cause the fault of jam ash-removing valve to occur.
The patent No. is that 02273236.5 Chinese patent discloses a kind of gas gravity dust arrester for blast furnace, it comprises: housing, raw coke oven gas enter pipe, purified gas goes out pipe, purified gas outlet, unloading valve, below purified gas outlet, a funnel type baffle plate is installed, by improving the collision between swirl strength and increase grit and the baffle plate of coal gas in deduster, significantly improve dust removal efficiency.But this gas gravity dust arrester for blast furnace does not relate to the reply treatment measures to the mal-condition such as high temperature, corrosion gas, and effectively isolate, remove fast bulk foreign material method and apparatus.
Other Patents dedusting technologies relate to the improvement of cinerary device more, as: the Chinese patent that the patent No. is 201220138464 discloses a kind of gravitational dust collection cinerary device, it is included in cue ball valve and the flat spin mixer that install gravitational precipitator ash bucket bottom, the bottom discharge mouth of cue ball valve is vertically connecting a conveying pipeline that secondary ball valve is housed by a pitch cone shape ash bucket, the lower end of conveying pipeline is connected with flat spin mixer, and relief valve and manual ash removing opening are installed respectively on the two side of taper ash bucket.This type of technology does not also relate to the reply treatment measures to the mal-condition such as high temperature, corrosion gas, and effectively isolates, removes fast bulk foreign material method and apparatus.
Utility model content
The purpose of this utility model is to provide a kind of gravitational precipitator, the problem that is difficult to effective isolation, removes fast bulky grain dust and bulk foreign material to solve existing gravitational precipitator.
In order to address the above problem, the utility model provides a kind of gravitational precipitator, and its technical scheme is as follows:
A kind of gravitational precipitator, comprising: body, and this body comprises top cylindrical shell, bottom cone, described bottom cone is connected in cylindrical shell bottom, described top and makes described body form a cavity structure; Air inlet caliber, is arranged in described top cylindrical shell; Air inlet pipe, is connected to input raw coke oven gas with described air inlet caliber; Escape pipe, be connected to export dedusting with described top cylindrical shell after flue gas; Impurity removing door, is positioned on the sidewall of described bottom cone; Cinerary device, is connected in the bottom of described bottom cone; It is characterized in that, be coated with corrosion-resistant high-temperature protective layer at least one party of inwall, outer wall and the described inner body wall of described air inlet caliber, the lower surface of described air inlet caliber is lower than the junction of described escape pipe and described top cylindrical shell.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, described gravitational precipitator also comprises: upper grid plate, be installed on the gas outlet place that described top cylindrical shell is connected with described escape pipe, and the gas outlet of the overall space size of described upper grid plate and described top cylindrical shell coincide; Lower lattice plate, be installed on the centre position of described bottom cone the height lower than described impurity removing door, and the cross section of the overall space size of described lower lattice plate and described bottom cone coincide, described centre position is the arbitrary position in 1/3～2/3 altitude range of described bottom cone.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, vibrator, is installed on the outer wall that described top cylindrical shell is corresponding with described upper grid plate, vibrates described upper grid plate remove dust stratification for interval.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, the bore size on described upper grid plate is greater than the diameter of the largest particles dust, to reduce the resistance of described upper grid plate to dedusting gas,
In a kind of preferred embodiment of above-mentioned gravitational precipitator, the bore size on described lower lattice plate is between 5-15cm.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, the perforate surrounding that the described bottom cone of described impurity removing door is installed is coated with airtight dust-removal cloth-bag to guarantee sealing effectiveness.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, described top inner barrel is stretched into from the upper surface of described top cylindrical shell in the upper surface sealing of described air inlet caliber, bottom, and described air inlet pipe is connected with described air inlet caliber in described top cylindrical shell outside; Described escape pipe is connected in the top of described top cylindrical shell.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, the perforate on described upper grid plate is rounded, and the perforate on described lower lattice plate is quadrangle.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, described top cylindrical shell is made up of upper conical portion and lower cylindrical part, junction from described upper conical portion and described lower cylindrical part is counted, and the lower surface of described air inlet caliber is between the 1/3-2/3 of described lower cylindrical part height.
In a kind of preferred embodiment of above-mentioned gravitational precipitator, the lower surface of described air inlet caliber is positioned at 1/2 At The Height of described lower cylindrical part,
Described escape pipe is connected with described top cylindrical shell in described upper conical portion.
Analyze knownly, bulky grain dust and bulk foreign material can effectively be isolated, be removed fast to the utility model, meets current enterprise cleaner production demand, is particularly useful for the primary treatment of mal-condition gas.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model preferred embodiment;
Fig. 2 is the structural representation of the upper grid plate of the utility model preferred embodiment;
Fig. 3 is the structural representation of the lower lattice plate of the utility model preferred embodiment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, the utility model preferred embodiment mainly comprises body, air inlet pipe 3, escape pipe 4, air inlet caliber 5, upper grid plate 6, vibrator 7, lower lattice plate 8, impurity removing door 9, cinerary device 10.
Wherein, body mainly comprises top cylindrical shell 1, bottom cone 2.Bottom cone 2 is connected in top cylindrical shell 1 bottom by connected modes such as welding, flanges, makes body form a cavity structure.Top cylindrical shell 1 inside (lower surface of air inlet caliber 5 will lower than escape pipe 4 connecting portion with top cylindrical shell 1) is stretched in the 5 upper surfaces sealings of air inlet caliber, bottom from the upper surface of top cylindrical shell 1, air inlet pipe 3 is connected with air inlet caliber 5 in the outside of top cylindrical shell 1, for by raw coke oven gas input air inlet caliber 5 high to high temperature, dustiness.4 of escape pipes are connected in the top of top cylindrical shell 1, are directly communicated with, to export the flue gas after dedusting with the cavity structure of body interior.Impurity removing door 9 is positioned on the sidewall of bottom cone 2; Cinerary device 10 is connected in the bottom of bottom cone 2.
As a preferred embodiment of above-mentioned embodiment, can make top cylindrical shell 1 be formed by upper conical portion and lower cylindrical part as shown in Figure 1, the lower surface of air inlet caliber 5 is positioned at the middle part of lower cylindrical part, such as counting from upper conical portion and lower cylindrical part junction, between the 1/3-2/3 of lower cylindrical part height, be preferably 1/2 At The Height.Now escape pipe 4 is preferably connected with top cylindrical shell 1 in described upper conical portion.
The mal-condition such as high temperature, corrosion gas enters air inlet caliber 5 from the air inlet of air inlet pipe 3, along with air descend, larger particles dust is deposited to bottom cone 2 under gravity and inertia force effect, and the gas separating after dedusting enters escape pipe 4 or next stage treating apparatus from the gas outlet of top cylindrical shell 1.
For fear of thering is the raw coke oven gas infringement air inlet caliber 5 of high temperature, etching characteristic, body even; therefore; at least need again the inner-wall spraying of air inlet caliber 5 to have corrosion-resistant high-temperature protective layer (not shown); for utmost point mal-condition gas; can optionally expand the area of spraying air inlet caliber 5, body, such as also can be to the inner-wall spraying corrosion-resistant high-temperature protective layer of the outer wall of air inlet caliber and body.This corrosion-resistant high-temperature protective layer is preferably high aluminium paint, and (composition comprises high-alumina fly, ethanol as liquid-carrier; As the bentonite of suspending agent; As the novolac resin of binding agent; In addition, also can add a certain amount of n-butanol is defoamer, and adding a certain amount of mica powder, feldspar powder etc. is agglutinant; Wherein high-alumina fly is as fire resistant infilling, and high-alumina fly has another name called bauxite powder, and each component content is except requiring Al
2o
3content should be up to 55-65wt%, and even higher, other can be with reference to prior art; The different Al of different hot conditions capable of regulatings
2o
3content, should suitably raise Al along with temperature raises
2o
3content, such as the porch temperature altitude of air inlet caliber 5, requires Al
2o
3content reaches 65wt%, and at least more than 64wt%, and the relatively low place of other temperature can be used Al
2o
3the high aluminium paint that content is relatively low, the Al in the high aluminium paint being coated with in certain position
2o
3content reduces along with the reduction of the flue-gas temperature through this position).Be subject to the effects such as air scour, in service in dedusting, may there is part obscission in corrosion-resistant high-temperature protective layer, causes the faults such as jam cinerary device to occur, and Given this, this preferred embodiment also comprises upper grid plate 6, lower lattice plate 8.Wherein, upper grid plate 6 is installed on the gas outlet place that top cylindrical shell 1 is connected with escape pipe 4, and the overall space size of upper grid plate 6 and the gas outlet of top cylindrical shell 1 coincide.Lower lattice plate 8 is installed on the centre position of bottom cone 2, for example, between the 1/3-2/3 height of bottom cone 2 or 1/2 At The Height, and the height of lower lattice plate 8 is the ash-removing mouth (be positioned at the bottom of bottom cone 2, be connected with cinerary device 10) higher than bottom cone 2 lower than impurity removing door 9.In addition, the overall space size of lower lattice plate 8 and the cross section of bottom cone 2 coincide, to avoid any bulky grain dust, foreign material to fall the bottom dust export of bottom cone 2 from the edge of lower lattice plate 8.
Upper grid plate 6 is arranged on the air outlet side of top cylindrical shell 1, is mainly bearing the effect of filtering larger particles dust.Preferably, as Fig. 2, its by perforate grid one by one according to circumference, multi-turn distribution and constitution, grid in perforate is preferably rounded, its diameter dimension is greater than bulky grain dust diameter (after primary settling above, can guarantee that bulky grain dust enters ash silo, meet gravitational dust collection technological requirement; Upper grid plate role is herein to remove as much as possible some relatively large dusts in gas after primary settling again; if although the undersized dust removing effects of lattice board diameter is better; but can strengthen dedusting fan load; and then reduction dedusting cost performance; so require again its diameter dimension more preferably greater than bulky grain dust diameter); the outer lattice spacing of perforate is chosen minimum of a value tolerance band planted agent, to reduce the resistance of upper grid plate 6 to dedusting gas as far as possible.
Preferably, as Fig. 3, lower lattice plate 8 is also made up of perforate grid one by one, in perforate, grid is preferably square, its size generally can be got 5-15cm, in the tolerance band that guarantees effectively to tackle bulk foreign material, chooses maximum, to reduce the resistance of lower lattice plate 8 to sinking dust stratification as far as possible.
In order to remove in time the dust stratification on upper grid plate 6, this preferred embodiment is involving vibrations device 7 also, and it is installed on the outer wall that top cylindrical shell 1 is corresponding with upper grid plate 6, to remove dust stratification, avoids upper grid plate 6 dust stratifications to affect efficiency of dust collection for interval vibration upper grid plate 6.
Impurity removing door 9 is installed on the top position of the lower lattice plate 8 on bottom cone 2 outer walls, and for remove the foreign material of piling up on lower lattice plate 8 in good time, preferably, impurity removing door 9 adopts the material identical with bottom cone 2 to make.For guaranteeing the sealing effectiveness under impurity removing door 9 closed conditions, the perforate surrounding in impurity removing door 9 can cover parcel with airtight dust-removal cloth-bag, and the soft feature of cloth bag can be guaranteed sealing effectiveness.
This preferred embodiment not only can be fabricated to completely new product, and can transform existing equipment, for example, and can be as follows to the coal gas gravitational precipitator transformation of an existing blast furnace:
The first step, utilize former gravitational precipitator top cylindrical shell 1(φ 4000mm × 15000cm), bottom cone 2(φ 4000mm × 2000mm) composition body, the external air inlet pipe 3(φ of top cylindrical shell 1 1800mm), escape pipe 4(φ 1800mm), the interior air inlet caliber 5(φ 2000mm × 5000mm that arranges of top cylindrical shell 1), air inlet caliber 5 inner-wall spraying high-temperature resistant anti-corrosive materials (high aluminium paint).
Second step, the upper grid plate 6 that is 30mm with 3mm steel plate cutting aperture, the diameter of upper grid plate 6 is 1800mm, coincide with the gas outlet size of top cylindrical shell 1, is arranged on the air outlet side in top cylindrical shell 1.
The 3rd step, the lower lattice plate 8 that is 100mm with 10mm steel plate cutting aperture, is arranged on the centre position of bottom cone 2 downside ash-removing mouths, and lower lattice plate 8 overall space sizes and bottom cone 2 cross sections are identical, can effectively tackle bulk foreign material.
The 4th step is installed vibrator 7 on the outer wall at upper grid plate 6 places, interval vibration upper grid plate 6.
The 5th step, on bottom cone 2 outer walls at lower lattice plate 8 places, impurity removing door 9 is installed in perforate, impurity removing door 9 adopts the material of same bottom cone 2 to make, and the perforate surrounding in impurity removing door 9 covers parcel with airtight dust-removal cloth-bag, and its soft cloth bag feature can guarantee that obturation effect is good.
The 6th step, cinerary device 10 adopts the cinerary device of former gravitational precipitator, and it is mainly made up of ash-removing valve, humidifier and airtight spiral ash machine.
After above-mentioned steps improvement, installation, can operate in accordance with the following steps:
1, after determining that deduster is shut down, open impurity removing door 9; 2, cleaning covers the dust stratification on the airtight dust-removal cloth-bag that wraps up impurity removing door 9; 3, with long handle instrument, the foreign material of piling up on lower lattice plate 8 are taken out, and the dust stratification on lattice plate 8 under cleaning; 4, again cover parcel impurity removing door 9 with dust-removal cloth-bag, close impurity removing door 9, reply holding state.
To sum up, bulky grain dust and bulk foreign material can effectively be isolated, be removed fast to the utility model, met preferably current enterprise cleaner production demand, is particularly useful for the primary treatment of mal-condition gas.And the utility model is simple in structure, cheap, installation, maintenance is convenient.
As known by the technical knowledge, the utility model can be realized by other the embodiment that does not depart from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, and is not only.Allly within the scope of the utility model or in the change being equal in scope of the present utility model, be all included in the utility model.
Claims (10)
1. a gravitational precipitator, comprising:
Body, comprises top cylindrical shell, bottom cone, and described bottom cone is connected in cylindrical shell bottom, described top and makes described body form a cavity structure;
Air inlet caliber, is arranged in described top cylindrical shell;
Air inlet pipe, is connected to input raw coke oven gas with described air inlet caliber;
Escape pipe, be connected to export dedusting with described top cylindrical shell after flue gas;
Impurity removing door, is positioned on the sidewall of described bottom cone;
Cinerary device, is connected in the bottom of described bottom cone;
It is characterized in that, be coated with corrosion-resistant high-temperature protective layer at least one party of inwall, outer wall and the described inner body wall of described air inlet caliber, the lower surface of described air inlet caliber is lower than the junction of described escape pipe and described top cylindrical shell.
2. gravitational precipitator according to claim 1, is characterized in that,
Described gravitational precipitator also comprises:
Upper grid plate, is installed on the gas outlet place that described top cylindrical shell is connected with described escape pipe, and the gas outlet of the overall space size of described upper grid plate and described top cylindrical shell coincide;
Lower lattice plate, is installed on the centre position of described bottom cone the height lower than described impurity removing door, and the cross section of the overall space size of described lower lattice plate and described bottom cone is identical,
Described centre position is the arbitrary position in 1/3～2/3 altitude range of described bottom cone.
3. gravitational precipitator according to claim 2, is characterized in that, also comprises:
Vibrator, is installed on the outer wall that described top cylindrical shell is corresponding with described upper grid plate, vibrates described upper grid plate remove dust stratification for interval.
4. gravitational precipitator according to claim 2, is characterized in that,
Bore size on described upper grid plate is greater than the diameter of the largest particles dust, to reduce the resistance of described upper grid plate to dedusting gas.
5. gravitational precipitator according to claim 2, is characterized in that,
Bore size on described lower lattice plate is between 5-15cm.
6. gravitational precipitator according to claim 1, is characterized in that,
The perforate surrounding that the described bottom cone of described impurity removing door is installed is coated with airtight dust-removal cloth-bag to guarantee sealing effectiveness.
7. gravitational precipitator according to claim 1, is characterized in that,
Described top inner barrel is stretched into from the upper surface of described top cylindrical shell in the upper surface sealing of described air inlet caliber, bottom, and described air inlet pipe is connected with described air inlet caliber in described top cylindrical shell outside;
Described escape pipe is connected in the top of described top cylindrical shell.
8. gravitational precipitator according to claim 2, is characterized in that,
Perforate on described upper grid plate is rounded, and the perforate on described lower lattice plate is quadrangle.
9. gravitational precipitator according to claim 1, it is characterized in that, described top cylindrical shell is made up of upper conical portion and lower cylindrical part, counts from the junction of described upper conical portion and described lower cylindrical part, and the lower surface of described air inlet caliber is between the 1/3-2/3 of described lower cylindrical part height.
10. gravitational precipitator according to claim 9, is characterized in that,
The lower surface of described air inlet caliber is positioned at 1/2 At The Height of described lower cylindrical part,
Described escape pipe is connected with described top cylindrical shell in described upper conical portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167273.0U CN203790715U (en) | 2014-04-04 | 2014-04-04 | Gravitational dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167273.0U CN203790715U (en) | 2014-04-04 | 2014-04-04 | Gravitational dust remover |
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| Publication Number | Publication Date |
|---|---|
| CN203790715U true CN203790715U (en) | 2014-08-27 |
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ID=51372990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420167273.0U Expired - Fee Related CN203790715U (en) | 2014-04-04 | 2014-04-04 | Gravitational dust remover |
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| CN (1) | CN203790715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933786A (en) * | 2014-04-04 | 2014-07-23 | 莱芜钢铁集团有限公司 | Gravity dust collector |
| CN114410335A (en) * | 2021-12-29 | 2022-04-29 | 东南大学 | Device for preventing oil gas condensation from blocking |
| CN116929081A (en) * | 2023-09-18 | 2023-10-24 | 赣州有色冶金机械有限公司 | Dust collection and discharging device and rotary reduction furnace with same |
-
2014
- 2014-04-04 CN CN201420167273.0U patent/CN203790715U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103933786A (en) * | 2014-04-04 | 2014-07-23 | 莱芜钢铁集团有限公司 | Gravity dust collector |
| CN114410335A (en) * | 2021-12-29 | 2022-04-29 | 东南大学 | Device for preventing oil gas condensation from blocking |
| CN116929081A (en) * | 2023-09-18 | 2023-10-24 | 赣州有色冶金机械有限公司 | Dust collection and discharging device and rotary reduction furnace with same |
| CN116929081B (en) * | 2023-09-18 | 2023-12-01 | 赣州有色冶金机械有限公司 | Dust collection and discharging device and rotary reduction furnace with same |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20170404 |
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| CF01 | Termination of patent right due to non-payment of annual fee |