CN104226070B - Immobilized particles layer deduster - Google Patents
Immobilized particles layer deduster Download PDFInfo
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- CN104226070B CN104226070B CN201410560212.5A CN201410560212A CN104226070B CN 104226070 B CN104226070 B CN 104226070B CN 201410560212 A CN201410560212 A CN 201410560212A CN 104226070 B CN104226070 B CN 104226070B
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- deduster
- grain bed
- baffle plate
- expansion chamber
- exhaust outlet
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Abstract
The invention discloses a kind of immobilized particles layer deduster, comprise dusty gas air inlet, expansion chamber, cyclone dust collectors, grain bed deduster, exhaust outlet and media regeneration system; Described grain bed deduster comprises shell, particle baffle plate, and it is the layout of tilting; The top of described particle baffle plate is pinnacle shape, lower sides has the air channel be arranged in order; Described particle baffle plate fixes place of bottom surface longitudinal center in the enclosure.Described media regeneration system comprises the pressure detecting system detecting the differential manometer composition of two ends pressure reduction between exhaust outlet and air inlet end, airslide conveyor and the by-pass valve control and particles circulating pipeline that are arranged on described grain bed deduster; Granule filter material piling height in described grain bed deduster is higher than described air channel.The feature of fixed bed and moving bed combines to solve by the present invention, reaches the technical problems such as high efficiency dedusting, continuously operation.
Description
Technical field
The invention belongs to the treatment technology of industrial dusty gas, be particularly applicable to the gravel bed filter of cleaning high-temp, non-adhesive dust.
Background technology
Gravel bed filter is with the cleaner of bulk material as filter medium, formed the filter course of thick 100 ~ 150mm with the bulk material of quartz sand or slag, coke, lime stone etc., dust laden air is deposited in bulk material or filtering layer surface by the grit in air-flow during filtering layer under the compound actions such as inertial collision, diffusion precipitin, gravitational settling, sieving.Dust to be deposited increases, and filtering layer filtration resistance is increased to 1000 ~ 2000Pa gradually, removes the dust stratification in filtering layer, then reenter filtration condition through blowback or vibration.Gravel bed filter is applicable to cleaning high-temp, non-adhesive dust, and as the flue dust of dolomite calcining kiln, coal-burning boiler, sintering machine tail, furnace cupola etc., its efficiency of dust collection can reach 92% ~ 99%.Flue-gas temperature is allowed to reach 200 ~ 350 DEG C.
Existing gravel bed filter is divided into according to duty: fixed bed, moving bed two kinds.
Fixed bed efficiency of dust collection is high, but wants intermittent duty, and equipment volume is huge, skewness weighing apparatus after dust collection in stratum granulosum, and operational efficiency is low; Moving bed solves the contradiction that can not run continuously of fixed bed, but moving bed particle exists particle in moving process misplaces the dust break-off caused, not high to the efficiency of dust collection of ultra-fine grain.Drop into granular bed filter technology many employings fixed bed filtering of application at present, but all realized the regeneration of filtrate by intermittent duty.
Summary of the invention
The object of this invention is to provide a kind of immobilized particles layer deduster, to solve, the feature of fixed bed and moving bed is combined, reach the technical problems such as high efficiency dedusting, continuously operation.
In order to realize foregoing invention object, the technical solution adopted in the present invention is as follows:
Immobilized particles layer deduster, comprises dusty gas air inlet, expansion chamber, cyclone dust collectors, grain bed deduster, exhaust outlet and media regeneration system; Described dusty gas air scoop aft is expansion chamber, and expansion chamber is connected with cyclone dust collectors by airduct, and the outlet of cyclone dust collectors is connected with grain bed deduster by airduct; Described grain bed deduster comprises shell, particle baffle plate, and it is the layout of tilting; The top of described particle baffle plate is pinnacle shape, lower sides has the air channel be arranged in order; Described particle baffle plate fixes place of bottom surface longitudinal center in the enclosure, and there is sealing plate its upper end, and bottom is connected with shell seal; On shell wall outside the space, particle baffle plate place that described air inlet is arranged on shell lower semisection; Exhaust outlet is located at shell upper end and is connected with the upper end seal plate of particle baffle plate; Described media regeneration system comprises the pressure detecting system detecting the differential manometer composition of two ends pressure reduction between exhaust outlet and air inlet end, airslide conveyor and the by-pass valve control and particles circulating pipeline that are arranged on described grain bed deduster; Granule filter material piling height in described grain bed deduster is higher than described air channel.
Described expansion chamber is two, first expansion chamber has dusty gas air inlet, its sidewall has the granular materials loop head be connected with airslide conveyor, and the bottom of this first expansion chamber is connected with the particulate material inlet on grain bed outer case of dust remover top by particle rotation valve.
At described exhaust outlet, one point of gas circuit is had to be connected with airslide conveyor by pipeline.
The inclination angle of described grain bed deduster and horizontal direction is 25 °-35 °.
The housing of institute's grain bed deduster is rectangle.
Advantage of the present invention be system can high efficiency dedusting, run continuously, media regeneration system can coordinate and adopts the PLC control mode of electromechanical integration, the full-automation of realization flow.The advantage that grain bed is in tilted layout is: can form the filter course parallel with particle packing angle of repose; Can flow under gravity during granule filter material regeneration, facilitate the conveying of granule filter material.If horizontal or vertical layout, all can not meet above-mentioned two kinds of functions simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the cross-sectional configuration schematic diagram of grain bed deduster of the present invention.
Fig. 3 is particle baffle arrangement schematic diagram of the present invention.
Fig. 4 is the sectional view along A-A direction of Fig. 3.
Detailed description of the invention
Immobilized particles layer deduster of the present invention comprises dusty gas air inlet, expansion chamber, cyclone dust collectors, grain bed deduster, exhaust outlet and media regeneration system.Described dusty gas air scoop aft is expansion chamber, and expansion chamber is connected with cyclone dust collectors by airduct, and the outlet of cyclone dust collectors is connected with grain bed deduster by airduct; Described grain bed deduster comprises shell, particle baffle plate, and it is the layout of tilting, and its inclination angle is 25 °-35 °.Described expansion chamber is two, first expansion chamber has dusty gas air inlet, its sidewall has the granular materials loop head be connected with airslide conveyor, and the bottom of this first expansion chamber is connected with the particulate material inlet on grain bed outer case of dust remover top by particle rotation valve.
Shown in Fig. 2,3,4, the top of described particle baffle plate is pinnacle shape, lower sides has the air channel be arranged in order.Shown in Figure 1, described particle baffle plate fixes place of bottom surface longitudinal center in the enclosure, and there is sealing plate its upper end, and bottom is connected with shell seal; On shell wall outside the space, particle baffle plate place that described air inlet is arranged on shell lower semisection; Exhaust outlet is located at shell upper end and is connected with the upper end seal plate of particle baffle plate; The housing of institute's grain bed deduster is rectangle.
The pressure detecting system detecting the differential manometer composition of two ends pressure reduction between exhaust outlet and air inlet end, airslide conveyor and the by-pass valve control and particles circulating pipeline that are arranged on described grain bed deduster is comprised see media regeneration system described in Fig. 1; Granular materials piling height in described grain bed deduster is higher than described air channel.
Composition graphs 1, is expressed as follows concrete structure of the present invention:
The present invention by have granules regeneration function expansion chamber 11,14, cyclone dust collectors 21, grain bed deduster 33 and the granules regeneration circulatory system 39 form.Expansion chamber is made up of two room sections, and expansion chamber 11 carries outlet 10 two imports by the gas of dusty gas import 12 and granule filter material, has baffle plate 13 in expansion chamber.Cyclone dust collectors are conventional structure.
Grain bed deduster 33 has the structure of inclination, inner by being placed on the particle baffle plate 34 of base plate, dusty gas import 35, clean gas export 32, the import 31 of granule filter material, the outlet 36 of granule filter material form.Exhaust outlet and air inlet termination have the differential manometer 40 detecting two ends pressure reduction.
Dust pelletizing system is composed in parallel by two or more described immobilized particles layer deduster unit module.
The circulation of granule filter material is completed by airslide conveyor 39, carries the outlet clean gas of gas from gravel bed filter of filtrate.
Specific works principle:
1, dust collecting process flow process:
Dusty gas is under air-introduced machine forms the guiding of negative pressure, entered by air inlet 12, oarse-grained separation is carried out by two rooms of expansion chamber, enter cyclone dust collectors 21 by airduct 17 again to filter (more than 20um is separated at this), the dust of such 80% filters out, remaining dusty gas enters gravel bed filter 33 by airduct 22, when dusty gas is by stratum granulosum filtrate, the dust-laden particle of 99% is caught by granule filter material to be collected, gas is discharged by exhaust outlet 32, completes dust removal process.The dust collected draws off at unloading valve 16 and 23.Remaining particle dust enters gravel bed filter and collects.
2, granules regeneration flow process:
When system cloud gray model differential manometer 40 detects stratum granulosum pressure reduction more than 2000pa, show that the dust inside filtrate is saturated, need to carry out media regeneration.PLC control system output order, first closes particulate charge flashboard, and open gas conveying fan 39 and particle rotation valve 15, filtrate enters recurrent state.When being transported to outlet 10 after by pipeline 38, the granule filter material of dust-laden is separated under conveying wind and the acting in conjunction of ash-laden gas, and filtrate falls into the first Room of expansion chamber, completes the regeneration of particulate material, ready for upgrading filtrate.Pipeline 37 is connected with between exhaust outlet 32 to airslide conveyor 39.
Conveying regeneration gas in regenerative process again enters cyclone separator after being separated and again enters filtration system together with flue gas, maximum minimizing dust emission.
The granule filter material of media regeneration system dumps totally, and close discharging flashboard, open charging flashboard, the filtrate after regeneration rejoins the filter space of module, and the regeneration completing granule filter material is changed.Finally open valve of giving vent to anger again to come into operation.
Each granules regeneration, only closes one of them immobilized particles layer deduster unit module, little on the impact of system fluctuation, there is not moving granular bed and misplace the phenomenon of the dust spilling caused.
3, control module
Native system adopts PLC module to control.Performer is become with air-flow conveying mechanism by operated pneumatic valve, pneumatic flashboard push rod; Position control has proximity switch to complete, and records the data target of discharge simultaneously; Technology maturation is reliable.There is HMI operation interface and communication interface, convenient access higher level's DCS system and record service data.
Said system combines cyclone dust removal and granule filter material dedusting, plays maximum feature separately, and synthetic operation forms dust pelletizing system.
Claims (5)
1. immobilized particles layer deduster, comprises dusty gas air inlet, expansion chamber, cyclone dust collectors, grain bed deduster, exhaust outlet and media regeneration system; It is characterized in that, described dusty gas air scoop aft is expansion chamber, and expansion chamber is connected with cyclone dust collectors by airduct, and the outlet of cyclone dust collectors is connected with grain bed deduster by airduct; Described grain bed deduster comprises shell, particle baffle plate, and it is the layout of tilting; The top of described particle baffle plate is pinnacle shape, lower sides has the air channel be arranged in order; Described particle baffle plate fixes place of bottom surface longitudinal center in the enclosure, and there is sealing plate its upper end, and bottom is connected with shell seal; On shell wall outside the space, particle baffle plate place that described air inlet is arranged on shell lower semisection; Exhaust outlet is located at shell upper end and is connected with the upper end seal plate of particle baffle plate; Described media regeneration system comprises the pressure detecting system detecting the differential manometer composition of two ends pressure reduction between exhaust outlet and air inlet end, airslide conveyor and the by-pass valve control and particles circulating pipeline that are arranged on described grain bed deduster; Granule filter material piling height in described grain bed deduster is higher than described air channel.
2. immobilized particles layer deduster according to claim 1, it is characterized in that, described expansion chamber is two, first expansion chamber has dusty gas air inlet, its sidewall has the granule filter material loop head be connected with airslide conveyor, and the bottom of this first expansion chamber is connected with the granule filter material entrance on grain bed outer case of dust remover top by particle rotation valve.
3. immobilized particles layer deduster according to claim 1 and 2, is characterized in that, at described exhaust outlet, has one point of gas circuit to be connected with airslide conveyor by pipeline.
4. immobilized particles layer deduster according to claim 1 and 2, is characterized in that, the inclination angle of described grain bed deduster and horizontal direction is 25 °-35 °.
5. immobilized particles layer deduster according to claim 1 and 2, is characterized in that, the housing of institute's grain bed deduster is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560212.5A CN104226070B (en) | 2014-10-21 | 2014-10-21 | Immobilized particles layer deduster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410560212.5A CN104226070B (en) | 2014-10-21 | 2014-10-21 | Immobilized particles layer deduster |
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| Publication Number | Publication Date |
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| CN104226070A CN104226070A (en) | 2014-12-24 |
| CN104226070B true CN104226070B (en) | 2015-11-18 |
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| CN201410560212.5A Expired - Fee Related CN104226070B (en) | 2014-10-21 | 2014-10-21 | Immobilized particles layer deduster |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105296014A (en) * | 2015-09-24 | 2016-02-03 | 郭英姿 | High-temperature and high-pressure granular-bed filter device and filter material regenerating method |
| CN107096335B (en) * | 2017-05-09 | 2019-03-29 | 北京科技大学 | A kind of inclination Bed Filtration device and method |
| CN107096370A (en) * | 2017-06-30 | 2017-08-29 | 大唐环境产业集团股份有限公司 | A kind of slurrying tapping equipment |
| CN108654290A (en) * | 2018-07-20 | 2018-10-16 | 宁波国电龙高科环境工程技术有限公司 | A kind of powder cabin dust pelletizing system of nearly zero dust leakage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6383263B1 (en) * | 1998-11-05 | 2002-05-07 | Francis A. L. Dullien | Device intended for mechanical separation of high-temperature sand present in a gas stream |
| CN102078732A (en) * | 2009-11-26 | 2011-06-01 | 刘柏谦 | Irregular multi-size uniform fluctuation grain bed |
| FR2959428A1 (en) * | 2010-05-03 | 2011-11-04 | Pigeon Entpr S | Stone sands dry fines eliminating device for e.g. ready-mixed concrete from pulverulent materials by suction, has elimination column to which upwelling current is applied to recover large solid particles at lower end of column |
| CN203469714U (en) * | 2013-08-30 | 2014-03-12 | 山东纳瑞环保科技有限公司 | Granular bed deduster capable of automatic counter-blowing for removing dust |
| CN103949122A (en) * | 2014-04-25 | 2014-07-30 | 中冶华天工程技术有限公司 | Moving bed granular layer dust fog removing device |
| CN204107267U (en) * | 2014-10-21 | 2015-01-21 | 北京弘扬紫东环保科技有限公司 | Immobilized particles layer deduster |
-
2014
- 2014-10-21 CN CN201410560212.5A patent/CN104226070B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6383263B1 (en) * | 1998-11-05 | 2002-05-07 | Francis A. L. Dullien | Device intended for mechanical separation of high-temperature sand present in a gas stream |
| CN102078732A (en) * | 2009-11-26 | 2011-06-01 | 刘柏谦 | Irregular multi-size uniform fluctuation grain bed |
| FR2959428A1 (en) * | 2010-05-03 | 2011-11-04 | Pigeon Entpr S | Stone sands dry fines eliminating device for e.g. ready-mixed concrete from pulverulent materials by suction, has elimination column to which upwelling current is applied to recover large solid particles at lower end of column |
| CN203469714U (en) * | 2013-08-30 | 2014-03-12 | 山东纳瑞环保科技有限公司 | Granular bed deduster capable of automatic counter-blowing for removing dust |
| CN103949122A (en) * | 2014-04-25 | 2014-07-30 | 中冶华天工程技术有限公司 | Moving bed granular layer dust fog removing device |
| CN204107267U (en) * | 2014-10-21 | 2015-01-21 | 北京弘扬紫东环保科技有限公司 | Immobilized particles layer deduster |
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| CN104226070A (en) | 2014-12-24 |
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Granted publication date: 20151118 Termination date: 20201021 |