CN207412968U - Novel dust collection device on aluminium oxide extraction process from coal ash - Google Patents
Novel dust collection device on aluminium oxide extraction process from coal ash Download PDFInfo
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- CN207412968U CN207412968U CN201721064773.1U CN201721064773U CN207412968U CN 207412968 U CN207412968 U CN 207412968U CN 201721064773 U CN201721064773 U CN 201721064773U CN 207412968 U CN207412968 U CN 207412968U
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Abstract
A kind of Novel dust collection device on aluminium oxide extraction process from coal ash, include the ash bucket of supporting rack support installation, the bottom installation high temperature unloading valve of ash bucket, the one side of ash bucket is equipped with air hose, dust-contained airflow enters at air hose in ash bucket, lower box is installed at the top of the ash bucket, the top is equipped with upper box by flange, the top of the lower box is equipped with more equally distributed porous ceramic pipes by porous plate, the one side of the upper box connects high-temperature blower by pipeline, is clean gas flow in the pipeline.Filtering dust is completed by acting in babinet for porous ceramic pipe, so as to the air discharge being purified.The utility model is mainly used for the gas dust-removing device used in coal ash for manufacturing alumina technology, due to the heat resisting corrosion-proof of porous ceramic filter pipe, it can be used for high temperature and the occasion containing corrosive gas, and the precision in dust removal process due to ceramic tube is very high, and dust-collecting efficiency is that other dust collecting techniques cannot compare.
Description
Technical field
The utility model is related to high temperature fume dust removal, gas improvement, valuable dust recovery technology field, especially a kind of use
In the Novel dust collection device on aluminium oxide extraction process from coal ash.
Background technology
Chinese electric 1,700,000,000 tons of the coal of annual consumption, generates 400,000,000 tons of flyash, this solid being made of countless microspheres gives up
Gurry, containing there are many harmful components, stockpiling is with high costs, and dust pollution is serious, for so huge solid waste fine coal
How ash is handledWhether can recycle turning waste into wealthIt has been investigated that aluminium oxide in domestic many fly ash in electric power plant
Content be up to 50% or so, cost permission in the range of by fly ash in electric power plant refine aluminium oxide be possibly realized.In flyash
It is an essential and very important flow to produce alumina technology high temperature gas cleaning, is directly related to returning for aluminium oxide
Yield height and this technique are to the pollution level of environment.
Traditional industrial dedusting field is in spite of many mature technologies at present, such as：Dust removal with machine, wet dedusting, pocket type
Dedusting, electric precipitation and electrostatic bag type composite dedusting etc..Dust removal with machine is to utilize the mechanical devices such as dust-settling compartment, cyclone separator
The method for carrying out dedusting, wet dedusting are the methods that dedusting is carried out using spray column, water dust scrubber or venturi scrubber, often
The processing larger-size gas of dust granules is seen, for needing to remove subparticle and the higher occasion of gas temperature, machinery
Dedusting and wet dedusting are all difficult to be competent at；Bag-type dusting is although efficiency of dust collection is very high, and non-refractory is it occur frequently that " burning bag " thing
Therefore, it is impossible to it applies in high-temperature flue gas process field；Electric precipitation is also that current very common and efficient dedusting means, this method are
First in gas dust charged, then it from air-flow is removed by electric field force and is fixed on electrode plate surface dedusting
Method, this method is handled available for high-temp waste gas, and the only pressure drop resistance of very little, but its shortcoming is the conduction to dust
Rate, gas humidity all there are certain requirements, it is difficult to high temperature and containing a large amount of fine alumina dust HCL gas technologies on carry out
Using.
It is ripe day by day with industrial porous ceramic technology, there is very reliable porous ceramic filter pipe for industry
The dust-filtering of exhaust gas, since ceramic tube thermal stability is high, corrosion resistance and good can be used for the occasion of high temperature air filtration,
For this special process of coal ash for manufacturing aluminium oxide, the flow behavior of preparation and fluid to micropore ceramics supporter, heating power are special
Theoretical research in terms of property, new generation low cost, high temperature resistant, high intensity, the ceramic film filtering element of low voltage difference and phase
Mating filtration system and device is imperative.We extract the operational characteristic of aluminium oxide according to flyash, it is proposed that High Temperature Gas
The new solution of fine dust is removed in body, some industrialization guidances are provided for similar technique.
Utility model content
The shortcomings that the applicant is directed in above-mentioned existing production technology provides a kind of for aluminium oxide extraction process from coal ash
On Novel dust collection device, so as to make it have low vapour lock, high throughput, corrosion resistant advantage, it may be convenient to recycle fine coal
Dedusting after grey high-temperature calcination containing small alumina particle in HCL gases.
Technical solution is as follows used by the utility model：
A kind of Novel dust collection device on aluminium oxide extraction process from coal ash includes the ash of supporting rack support installation
Bucket, the bottom installation high temperature unloading valve of the ash bucket, the one side of the ash bucket are equipped with air hose, and dust-contained airflow enters at air hose
In ash bucket, lower box is installed at the top of the ash bucket, the top is equipped with upper box by flange, the lower box
Top is equipped with more equally distributed porous ceramic pipes by porous plate, and the one side of the upper box connects high temperature by pipeline
Wind turbine, the interior pipeline is clean gas flow.
As being further improved for above-mentioned technical proposal：
The mounting structure of the porous ceramic pipe is：The porous ceramic pipe is fixed on lower box into U-shaped structure, porous plate
Top, multiple through holes to match with porous ceramic pipe are provided on the porous plate, porous ceramic pipe is vertical to be prevented described
In through hole, sealing ring is prevented between porous plate and porous ceramic pipe, pressure strip is installed at the top of porous ceramic pipe；Positioned at top box
Side portion is additionally provided with blowback gas bag, and the blowback air is wrapped sets several blowback jet pipes by pulse valve.
The porous ceramic pipe inner skeleton material is the ceramic material of SiC, cordierite, Mo Laishi.
50~400mm of caliber of the porous ceramic pipe, length 1m~3m, porosity 15%~80%, average pore ruler
Very little 0.3 μm~100 μm.
The beneficial effects of the utility model are as follows：
The utility model is compact-sized, reasonable, easy to operate, completes to filter by acting in babinet for porous ceramic pipe
Dust, so as to the air discharge being purified.The utility model is mainly used for the gas used in coal ash for manufacturing alumina technology
Dust-extraction unit due to the heat resisting corrosion-proof of porous ceramic filter pipe, can be used for high temperature and the occasion containing corrosive gas, and
And the precision in dust removal process due to ceramic tube is very high, dust-collecting efficiency is that other dust collecting techniques cannot compare.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the scheme of installation of the utility model porous ceramic pipe.
Wherein：1st, porous ceramic pipe；2nd, blowback gas bag；3rd, pulse valve；4th, upper box；5th, clean gas flow；6th, high-temperature blower；
7th, high temperature unloading valve；8th, ash bucket；9th, dust-contained airflow；10th, lower box；11st, porous plate；12nd, sealing ring；13rd, pressure strip；14th, it is anti-
Blow and spray pipe；15th, blowback air-flow.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.
As depicted in figs. 1 and 2, the Novel dust collection device being used on aluminium oxide extraction process from coal ash of the present embodiment, bag
The ash bucket 8 of supporting rack support installation is included, the bottom installation high temperature unloading valve 7 of ash bucket 8, the one side of ash bucket 8 is equipped with air hose, dust-laden
Air-flow 9 enters at air hose in ash bucket 8, and the top of ash bucket 8 is equipped with lower box 10, top upper box is equipped with by flange
4, the top of lower box 10 is equipped with more equally distributed porous ceramic pipes 1 by porous plate 11, and the one side of upper box 4 passes through
Pipeline connects high-temperature blower 6, is clean gas flow 5 in pipeline.
The mounting structure of porous ceramic pipe 1 is：Porous ceramic pipe 1 is fixed on lower box 10 into U-shaped structure, porous plate 11
Top is provided with multiple through holes to match with porous ceramic pipe 1 on porous plate 11, and porous ceramic pipe 1 is vertical to be prevented in through hole,
Sealing ring 12 is prevented between porous plate 11 and porous ceramic pipe 1, pressure strip 13 is installed at the top of porous ceramic pipe 1；Positioned at upper
4 side of babinet is additionally provided with blowback gas bag 2, and several blowback jet pipes 14 are set by pulse valve 3 on blowback gas bag 2.Blow out blowback
Air-flow 15.
1 inner skeleton material of porous ceramic pipe is the ceramic material of SiC, cordierite, Mo Laishi.
50~400mm of caliber of porous ceramic pipe 1, length 1m~3m, porosity 15%~80%, average pore size
0.3 μm~100 μm.
In practical work process, including following operating procedure：
The first step：Dust-contained airflow 9 enters in ash bucket 8, and largely nowel is upwardly under suction function in dust-contained airflow 9
In body 10, the dust of small part larger particles is conducting oneself with dignity and is directly being settled down to 8 bottom of ash bucket under collision effect in dust-contained airflow 9；
Second step：Into most of dust-contained airflow 9 in lower box 10, the relatively fine dust in dust-contained airflow 9 is then blocked
And the outer wall in porous ceramic pipe 1 is adsorbed, enter through 1 purified clean gas flow 5 of porous ceramic pipe in porous ceramic pipe 1
Portion, hence into upper box 4；
3rd step：Clean gas flow 5 imports road work under air passage is delivered to row outside high-temperature blower 6 or enters under suction function
Sequence；
4th step：With the progress of filtering operating mode, the dust on 1 surface of porous ceramic pipe reaches thickness requirement, porous plate 11
When front and rear pressure difference reaches the Resistance Value of setting, starting impulse valve 3, the compressed air of blowback gas bag 2 is by pulse valve 3, by blowback
Jet pipe 14 makees the injection of moment to porous ceramic pipe 1, vibrates and reversely blow porous ceramic pipe 1, accumulates 1 surface of porous ceramic pipe
Dust layer crush to come off and fall into 8 bottom of ash bucket, this state is sequentially completed by pulse request；
5th step：After operation, when the dust of 8 bottom of ash bucket runs up to setting value, high temperature unloading valve 7 opens outside ash discharge.
In 4th step, the scope of Resistance Value is 1000~5000Pa.
Using the ceramic filter tube with micropore performance as the filter medium for removing chalk dust removing, used porous ceramics mistake
The inner skeleton material of chimney filter is SiC, not cordierite, the ceramic materials such as Lay stone, according to removal dust particles characteristic, is made pottery in skeleton
Ceramic material surface coats more tiny ceramic material film layer and realizes its filtering accuracy, and position on the upper side sets more than one in the middle part of deduster
Orifice plate 11 opens several through holes to match with ceramic filter tube on porous plate 11, and ceramic tube is vertical to be placed in porous,
Seal washer is placed between porous plate 11 and ceramic tube, placement clamping backing plate plays fixed and sealing ceramic tube on ceramic tube
Effect, has the upper box 4 of a collection clean gas on 11 top of porous plate, sets a blowback gas bag 2 in 4 side of upper box, is
Reverse gas cleaning provides compressed air, and several row's injection tubes are set by pulse valve 3 on blowback gas bag 2, rises to ceramic tube high pressure
The effect of reverse gas cleaning has a lower box 10 and ash bucket 8,10 device smooth air of lower box and pre-separation powder in 11 lower part of porous plate
The effect of dirt, ash bucket 8 mainly play a part of to collect dust, in equipment bottommost a unloading valve are set to play in a system outside dust
The effect of row.
The porous ceramic filter pipe can recycle tiny micro mist aluminium oxide, first, the rate of recovery of aluminium oxide is improved,
Second is that reduce the influence to environment and next procedure.
Clean HCL gases are obtained, well stable process conditions are provided to the concentration of subsequent hydrochloric acid.
System be not required to reduce temperature can direct dedusting, save energy consumption, corrosion resistance and good, service life is long.
50~400mm of caliber of used porous ceramic filter pipe, length 1m~3m, porosity 15%~80% are put down
Equal 0.3 μm~100 μm of pore size.
Name use " a step acid extracting " technique coal ash for manufacturing oxidation of Zhun Neng resource synthetic developments Co., Ltd of Shenhua
The case study on implementation of aluminium, to further understand the utility model：
High temperature containing fine alumina dust flue gas of the crystal aluminum chloride after rotary kiln baking is filtered recycling, the project
Exhaust gas volumn 17000m3/h, 350 DEG C of temperature, alumina powder dust content 5g/m3.According to the specific requirement of dust collecting process, porous ceramics
The detailed design parameter of 1 cleaner of pipe is as follows：Porous ceramic pipe is burnt till using SiC aggregates as supporter, surface coating height
Warm pellumina, porous ceramic pipe appearance and size Φ 60 × 1500, the porosity 40%, 0.3 μm of filtering accuracy, flexural strength >=
20MPa using 968 porous ceramic pipes, divides 88 groups, every group 11；The deduster design wind speed 1.05m/ of porous ceramic pipe 1
Min, dust chamber two, 0.6~0.8MPa of jetting pressure, dust remover resistance 3000KPa export dustiness ＜ 5mg/m3, dedusting
Device case material uses inconel600, deduster length × width × height size position 5500 × 3300 × 520.
Arrow direction in Fig. 1 and Fig. 2 give the dust removal method frame mode and air-flow in porous ceramic pipe 1
Trend, but any restrictions are not formed to the ceramic material of porous ceramic filter pipe, arrangement mode, length in the technical solution,
As long as porous ceramic pipe 1 has certain porosity and intensity, dust-contained airflow 9 can uniformly flow into porous ceramic filter pipe surface
.Meanwhile Fig. 2 is not also to gases at high pressure back blow port position, blowback nozzle style and the porous ceramics mistake of the dust-extraction unit
The sealing means of chimney filter and the connection mode of end socket form any restrictions.
Above description is the explanation to the utility model, is not the restriction to utility model, what the utility model was limited
Scope within the scope of protection of the utility model, can make any type of modification referring to claim.
Claims (3)
1. a kind of Novel dust collection device on aluminium oxide extraction process from coal ash, it is characterised in that：It is supported including supporting rack
The ash bucket (8) of installation, the bottom installation high temperature unloading valve (7) of the ash bucket (8), the one side of the ash bucket (8) are equipped with air hose,
Dust-contained airflow (9) enters at air hose in ash bucket (8), and lower box (10), the top are equipped at the top of the ash bucket (8)
Upper box (4) is equipped with by flange, the top of the lower box (10) is equipped with more by porous plate (11) and is uniformly distributed
Porous ceramic pipe (1), the one side of the upper box (4) connects high-temperature blower (6) by pipeline, is clean gas in the pipeline
It flows (5).
2. as described in claim 1 for the Novel dust collection device on aluminium oxide extraction process from coal ash, it is characterised in that：Institute
The mounting structure for stating porous ceramic pipe (1) is：The porous ceramic pipe (1) is fixed on lower box into U-shaped structure, porous plate (11)
(10) top is provided with multiple through holes to match with porous ceramic pipe (1), porous ceramic pipe (1) on the porous plate (11)
It is vertical to prevent in the through hole, sealing ring (12) is prevented between porous plate (11) and porous ceramic pipe (1), in porous ceramic pipe
(1) top installation pressure strip (13)；Blowback gas bag (2), the blowback gas bag (2) are additionally provided with positioned at upper box (4) side
It is upper that several blowback jet pipes (14) are set by pulse valve (3).
3. as described in claim 1 for the Novel dust collection device on aluminium oxide extraction process from coal ash, it is characterised in that：Institute
State 50~400mm of caliber of porous ceramic pipe (1), length 1m~3m, porosity 15%~80%, 0.3 μm of average pore size
~100 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721064773.1U CN207412968U (en) | 2017-08-23 | 2017-08-23 | Novel dust collection device on aluminium oxide extraction process from coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721064773.1U CN207412968U (en) | 2017-08-23 | 2017-08-23 | Novel dust collection device on aluminium oxide extraction process from coal ash |
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| Publication Number | Publication Date |
|---|---|
| CN207412968U true CN207412968U (en) | 2018-05-29 |
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ID=62315188
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721064773.1U Active CN207412968U (en) | 2017-08-23 | 2017-08-23 | Novel dust collection device on aluminium oxide extraction process from coal ash |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335296A (en) * | 2017-08-23 | 2017-11-10 | 江苏省宜兴非金属化工机械厂有限公司 | Novel dust collection device and its method on aluminium oxide extraction process from coal ash |
| CN108554045A (en) * | 2018-06-27 | 2018-09-21 | 广东正来科技有限公司 | Independent dust removal equipment of concrete production line |
| CN109289375A (en) * | 2018-10-18 | 2019-02-01 | 倍杰特集团股份有限公司 | A kind of dust-extraction unit and high-temp waste gas processing equipment |
-
2017
- 2017-08-23 CN CN201721064773.1U patent/CN207412968U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107335296A (en) * | 2017-08-23 | 2017-11-10 | 江苏省宜兴非金属化工机械厂有限公司 | Novel dust collection device and its method on aluminium oxide extraction process from coal ash |
| CN108554045A (en) * | 2018-06-27 | 2018-09-21 | 广东正来科技有限公司 | Independent dust removal equipment of concrete production line |
| CN109289375A (en) * | 2018-10-18 | 2019-02-01 | 倍杰特集团股份有限公司 | A kind of dust-extraction unit and high-temp waste gas processing equipment |
| CN109289375B (en) * | 2018-10-18 | 2021-05-11 | 倍杰特集团股份有限公司 | Dust collector and high temperature exhaust-gas treatment equipment |
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