CN101695617B - Dust removal filter for high-temperature flue gas - Google Patents

Dust removal filter for high-temperature flue gas Download PDF

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Publication number
CN101695617B
CN101695617B CN2009100193836A CN200910019383A CN101695617B CN 101695617 B CN101695617 B CN 101695617B CN 2009100193836 A CN2009100193836 A CN 2009100193836A CN 200910019383 A CN200910019383 A CN 200910019383A CN 101695617 B CN101695617 B CN 101695617B
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CN
China
Prior art keywords
dust removal
flue gas
filter
temperature flue
metal shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009100193836A
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Chinese (zh)
Other versions
CN101695617A (en
Inventor
魏春城
刘曙光
田贵山
孟凡涛
冯柳
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Shandong University of Technology
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Shandong University of Technology
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Publication date
Application filed by Shandong University of Technology filed Critical Shandong University of Technology
Priority to CN2009100193836A priority Critical patent/CN101695617B/en
Publication of CN101695617A publication Critical patent/CN101695617A/en
Application granted granted Critical
Publication of CN101695617B publication Critical patent/CN101695617B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention provides a dust removal filter for high-temperature flue gas, which comprises a metal shell and a filtering barrel, wherein the metal shell is provided with an air inlet, and the filtering barrel is arranged in the metal shell and provided with a sealed bottom. The dust removal filter for high-temperature flue gas is characterized in that a ceramic filtering barrel is used as a filtering barrel; a fan and a pressure alarm are added, wherein the fan is arranged in the metal shell and fixed on a top cover of the metal shell, and air holes and the pressure alarm are arranged on the top cover, during the dust removal and filtration, the fan rotates forward and extracts air from the outside, after working for a certain time, the pressure in the filtering barrel is reduced to a certain value, the pressure alarm alarms and the fan rotates backward and feeds air in, then the dust on the outer wall of the filtering barrel falls off. The dust removal filter for high-temperature flue gas has high flue gas filtering precision, simple operation, long service life and no secondary pollution to environment.

Description

Dust removal filter for high-temperature flue gas
Technical field
The invention provides a kind of dust removal filter for high-temperature flue gas, belong to the environmental protection dust collection method.
Background technology
Smoke filter mainly contains high-performance mechanical deduster (as cyclone dust collectors), electrostatic precipitator, places 4 kinds of mechanical dust collector preceding acoustic agglomeration deduster, high-performance blocking type filters.Cyclone dust collectors operating cost is minimum, but general as pre-cleaner; Electrostatic precipitator efficient can reach 90%~99.6%, but remains in problems such as corona stabilization, stability of material, material coefficient of thermal expansion; Acoustic agglomeration can place the preceding reunion dust of cyclone dust collectors, has increased the ability of cyclone dust collectors, but has not been used for industrial experiment as yet.High-performance blocking type filter can be divided into ceramic filter, Bed Filtration device, metal felt filter.Bed Filtration device efficiency of dust collection reaches 99%, but when at high temperature moving, bed stops up easily; Ceramic filter adopts the air blast super charge, the malleation dedusting, air blast separates with cleaner, take up an area of greatly, ceramic filter can not move after installing, and ceramic filter mainly is the purification that is used in the heating gas that is used for IGCC power plant, used device is more than up to ten million, complicated operation has high input, and is not suitable for the high temperature fume dust removal of medium and small factories and miness.Bag-type dust since cloth bag can only use at low temperature can not be to the direct dedusting of high-temperature flue gas; Patent CN2539563Y " fume dust remover " adopts the water treatment flue gas, causes secondary pollution.
Summary of the invention
The purpose of this invention is to provide a kind of dust removal filter for high-temperature flue gas that can overcome above-mentioned defective, filtering accuracy height, simple to operate, long service life, environment not caused secondary pollution.Its technical scheme is:
Comprise the metal shell that is provided with air inlet and be arranged in the metal shell, the filter vat of bottom lock, it is characterized in that: filter vat adopts the ceramic filter bucket, set up blower fan and pressure alarm, wherein blower fan is positioned at metal shell and is fixed on the top cover of metal shell, top cover is provided with pore and pressure alarm, during dust removal and filtration, blower fan is just turning to outer bleeding, when treating that pressure is reduced to certain value in work certain hour, the filter vat, pressure alarm is reported to the police, supply gas in the blower fan counter steer, the dust on the filter vat outer wall comes off.
Described dust removal filter for high-temperature flue gas, the material of filter vat are aluminium oxide, carborundum or silicon nitride.
Described dust removal filter for high-temperature flue gas, the cross section of filter vat is rounded, and sidewall is assembled by the polylith arc; Perhaps the cross section of filter vat is polygon, and sidewall is assembled by the straight plate of polylith.
Described dust removal filter for high-temperature flue gas, the sidewall of filter vat adopts single layer structure; Perhaps the sidewall of filter vat adopts sandwich construction, and the filtering holes on the sidewall increases from outside to inside successively.
Described dust removal filter for high-temperature flue gas, pressure alarm adopts Pressure gauge or pressure sensor.
Its operation principle is: flue gas is entered in the metal shell by air inlet, and during dust removal and filtration, the blower fan that is fixed on the metal shell top cover is just turning to outer bleeding, and dust is adsorbed on the filter vat outer wall; Treat the work certain hour, the dust thickening on the filter vat outer wall stops up filtering holes, and pressure reduces in the filter vat, efficiency of dust collection reduces, and treats that pressure is reduced to certain value, and pressure alarm is reported to the police, supply gas in the blower fan counter steer, the dust on the filter vat outer wall comes off, and collects dust.One-period is finished, and goes round and begins again.
The present invention compared with prior art has following advantage:
1, the aperture of filter vat of the present invention is controlled, can be according to the size of different smoke dusts, and design filter vat aperture.
2, the present invention is owing to adopt the negative pressure dust suction, and equipment is integrated, portable use.
3, the present invention can be at high-temperature dust removal owing to using filter vat.
4, the ceramic filter bucket clean convenient, reusable, long service life, and do not cause secondary right to environment.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the A-A profile of metal shell and filter vat in the embodiment of the invention 1;
Fig. 3 is the A-A profile of metal shell and filter vat in the embodiment of the invention 2.
Among the figure: 1, air inlet 2, metal shell 3, filter vat 4, blower fan 5, pressure alarm 6, top cover 7, pore 8, mouth gathers dust
The specific embodiment
In the embodiment shown in fig. 1: the filter vat 3 of bottom lock is arranged in the metal shell 2 that is provided with air inlet 1, filter vat 3 adopts the ceramic filter bucket of aluminium oxide material, blower fan 4 is positioned at metal shell 2 and is fixed on the top cover 6 of metal shell 2, and top cover 6 is provided with pore 7 and pressure alarm 5.
In the embodiment shown in Figure 2: the cross section of filter vat 3 is rounded, and sidewall is assembled by the polylith arc.
In the embodiment shown in fig. 3: the cross section of filter vat 3 is rounded, and sidewall adopts double-layer structure, and the filtering holes on the outer sidewall is littler than the filtering holes on the internal layer sidewall.

Claims (7)

1. dust removal filter for high-temperature flue gas, comprise the metal shell (2) that is provided with air inlet (1) and be arranged in the metal shell (2), the filter vat of bottom lock (3), it is characterized in that: filter vat (3) adopts the ceramic filter bucket, set up blower fan (4) and pressure alarm (5), wherein blower fan (4) is positioned at metal shell (2) and is fixed on the top cover (6) of metal shell (2), top cover (6) is provided with pore (7) and pressure alarm (5), during dust removal and filtration, blower fan (4) is just turning to outer bleeding, treat the work certain hour, when the interior pressure of filter vat (3) is reduced to certain value, pressure alarm (5) is reported to the police, supply gas in blower fan (4) counter steer, the dust on filter vat (3) outer wall comes off.
2. dust removal filter for high-temperature flue gas as claimed in claim 1 is characterized in that: the material of filter vat (3) is aluminium oxide, carborundum or silicon nitride.
3. dust removal filter for high-temperature flue gas as claimed in claim 1 is characterized in that: the cross section of filter vat (3) is rounded, and sidewall is assembled by the polylith arc.
4. dust removal filter for high-temperature flue gas as claimed in claim 1 is characterized in that: the cross section of filter vat (3) is polygon, and sidewall is assembled by the straight plate of polylith.
5. dust removal filter for high-temperature flue gas as claimed in claim 1 is characterized in that: the sidewall of filter vat (3) adopts single layer structure.
6. dust removal filter for high-temperature flue gas as claimed in claim 1 is characterized in that: the sidewall of filter vat (3) adopts sandwich construction, and the filtering holes on the sidewall increases from outside to inside successively.
7. dust removal filter for high-temperature flue gas as claimed in claim 1 is characterized in that: pressure alarm (5) adopts Pressure gauge or pressure sensor.
CN2009100193836A 2009-10-23 2009-10-23 Dust removal filter for high-temperature flue gas Expired - Fee Related CN101695617B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100193836A CN101695617B (en) 2009-10-23 2009-10-23 Dust removal filter for high-temperature flue gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100193836A CN101695617B (en) 2009-10-23 2009-10-23 Dust removal filter for high-temperature flue gas

Publications (2)

Publication Number Publication Date
CN101695617A CN101695617A (en) 2010-04-21
CN101695617B true CN101695617B (en) 2011-05-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100193836A Expired - Fee Related CN101695617B (en) 2009-10-23 2009-10-23 Dust removal filter for high-temperature flue gas

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580420A (en) * 2012-01-29 2012-07-18 山东理工大学 Household filter for filtering inhalable particles in air

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012119298A1 (en) * 2011-03-07 2012-09-13 深圳市兴日生实业有限公司 Liquid filtering and purifying device using ceramic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102580420A (en) * 2012-01-29 2012-07-18 山东理工大学 Household filter for filtering inhalable particles in air

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Granted publication date: 20110504

Termination date: 20121023