CN103528931A - Dedusting experimental apparatus for ceramic filter core - Google Patents
Dedusting experimental apparatus for ceramic filter core Download PDFInfo
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- CN103528931A CN103528931A CN201310471915.6A CN201310471915A CN103528931A CN 103528931 A CN103528931 A CN 103528931A CN 201310471915 A CN201310471915 A CN 201310471915A CN 103528931 A CN103528931 A CN 103528931A
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Abstract
The invention provides a dedusting experimental apparatus for a ceramic filter core. The apparatus comprises a charging unit, a spiral feeder, an interference unit, a granularity measuring instrument, a flowmeter, a filter tank, an air compressor, an air storage tank, a freeze drying machine and a host computer, wherein the air compressor is connected with the air storage tank, the air storage tank is connected with the freeze drying machine, the freeze drying machine is connected with one end of a ball valve group, the other end of the ball valve group is connected with one end of a pulse back-flushing valve group, the other end of the pulse back-flushing valve group is connected with a back-flushing inlet of the filter tank, the charging unit is communicated with the filter tank and with the spiral feeder, the spiral feeder is communicated with the exterior through an air pump and simultaneously connected with the interference unit and the granularity measuring instrument, the interference unit is connected with the flowmeter, the flowmeter is connected with a feed inlet of the filter tank and with the host computer, and the granularity measuring instrument and the filter tank are both connected with the host computer. The dedusting experimental apparatus provided by the invention can be used for research on filtration efficiency of the ceramic filter core and prediction of the service life of the ceramic filter core and is widely applicable to the technical field of gas-solid separation.
Description
Technical field
The present invention relates to dedusting technology, particularly relate to a kind of ceramic element dedusting experimental provision.
Background technology
Along with social development and progress, people are originally higher on the attention rate of life impact on atmospheric environment, also more and more higher to the requirement of pollutant emission standard in atmosphere, such as, PM2.5, PM10.At present, high temperature air filtration technology has been subject to extensive concern in numerous industrial processs, and it adopts high-temperature gas membrane filtration pattern conventionally.The filter medium of high-temperature gas membrane filtration pattern mainly comprises ceramic element, metal filtering core, fabric filter element; Wherein, ceramic element is due to features such as its filtering accuracy is high and high temperature resistant, high pressure resistant, resistance to chemical attack, ageing-resistant, physical strength is high, regeneration is simple, long service life, therefore can work under the unaffordable rugged surroundings such as metal filtering core, fabric filter element.In practical application, ceramic element is widely used in the processes such as gas solid separation, Separation of Solid and Liquid and gas purification in the fields such as Aero-Space, petrochemical complex, metallurgy.But, along with the increase of filtration cycle number of times, having there is inhomogeneous, the thorough phenomenon of filter cake removing, there is filter cake on ceramic element surface still Local residues, even produces filter cake and builds bridge, and causes ceramic element to lose efficacy because pressure drop is too high.At present, there is no method according to ceramic element in the course of the work inner flow location form, filter cake form with the rule that comes off and improve filtering efficiency and prediction ceramic element serviceable life.
As can be seen here, in prior art, still by stream field form, filter cake, do not form the ceramic element dedusting experimental facilities of developing with the research of the rule that comes off.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of and studies ceramic element filtering efficiency, predicts the ceramic element ceramic element dedusting experimental provision in serviceable life.
In order to achieve the above object, the technical scheme that the present invention proposes is:
A dedusting experimental provision, comprising: for by the coal ash from outside, from filter tank coal ash, drop into the cast feeder of screw feeder; The the first coal ash air mixture obtaining after mixing for the coal ash that the air of outside air pump input is carried with cast feeder is sent to the screw feeder of interference unit, particle size measuring instrument; For the first coal ash air mixture that screw feeder is sent being applied to the second coal ash air mixture obtaining after interference, through flowmeter, be sent to the interference unit of filter tank charging aperture; For the input sample information obtaining respectively after the cleaned air of the first coal ash air mixture of screw feeder transmission, filter tank output is sampled, the particle size measuring instrument that output sample information is sent to host computer; For the filter tank charging aperture recording the second coal ash air mixture flow being sent to the flowmeter of host computer; For by after adopting ceramic element group to carry out dedusting to the second coal ash air mixture from interference unit under the effect of the blowback air sending in pulse backblowing valve group, obtain through dedusting gas, be sent to respectively particle size measuring instrument, cast feeder through dedusting coal ash, and the upper end pressure that blowback air is formed in described filter tank, intermediate pressure, lower end pressure, upper end flow velocity, middle flow velocity, lower end flow velocity are sent to the filter tank of host computer; For the pressurized air obtaining after extraneous air is compressed being sent to the air compressor of gas-holder; Be used for the pressurized air that buffer-stored air compressor sends, and pressurized air be sent to the gas-holder of cooling driers; For the dry cooling-air pressurized air to from gas-holder being dried, obtain after cooling, by ball valve group, pulse backblowing valve group, be sent to successively the cooling driers of filter tank; The the second coal ash air mixture flow sending for the input sample information that sends according to particle size measuring instrument and output sample information, flowmeter and from upper end pressure, intermediate pressure, lower end pressure, upper end flow velocity, middle flow velocity, the lower end flow velocity of filter tank, the air pressure and the regularity of distribution of flow velocity in filter tank and the host computer of blowback completeness that obtain coal ash concentration in the first coal ash air mixture, coal ash particle diameter, filter homogeneity, blowback air produce; Wherein,
Air compressor output terminal is connected with gas-holder input end, gas-holder output terminal is connected with cooling driers input end, cooling driers output terminal is connected with ball valve group one end, and the ball valve group other end is connected with pulse backblowing valve group one end, and the pulse backblowing valve group other end is connected with filter tank blowback import.
Cast feeder input port is communicated with filter tank the first outlet, and cast feeder delivery outlet is communicated with screw feeder the first input port; Screw feeder the second input port is communicated with outside by air pump, and screw feeder output terminal is connected with interference unit input end, particle size measuring instrument first input end simultaneously; Interference unit output terminal connection traffic meter input end, flowmeter the first output terminal connects filter tank charging aperture, and flowmeter the second output terminal connects host computer first input end; Particle size measuring instrument the second input end connects filter tank the second outlet, and particle size measuring instrument output terminal connects host computer the second input end; Filter tank the first output terminal, the second output terminal connect respectively host computer the 3rd input end, four-input terminal.
In sum, in ceramic element dedusting experimental provision of the present invention, ceramic element is porous structure, and these apertures are normally invisible to the naked eye.In actual applications, the air that contains dust or dust enters filter tank, ceramic element in filter tank filters the air that contains dust or dust, dust forms filter cake on ceramic element surface, and the filter cake dust coming off during blowback enters cast feeder to recycle these dusts or dust in experiment by ash bucket; Meanwhile, the cleaned air obtaining is by filter tank the second outlet output.At ceramic element, filter in the process of work, filter cake can stop up the aperture on ceramic element, causes ceramic element filter effect to reduce, and even filters and loses efficacy; Therefore add purge gas by filter tank blowback import, to eliminate the filter cake that sticks on ceramic element inside.Here, the uninterrupted of purge gas can be controlled by pulse backblowing valve group, ball valve group.Based on above-mentioned composition structure, the present invention can realize the research of process, mechanism and effect to dedusting, such as, the air pressure and the regularity of distribution and the blowback completeness of flow velocity in filter tank that can obtain coal ash concentration in the first coal ash air mixture, coal ash particle diameter, filter homogeneity, blowback air produce, the while can be predicted the serviceable life of ceramic element.
Accompanying drawing explanation
Fig. 1 is the main assembly structural representation of ceramic element dedusting experimental provision of the present invention.
Fig. 2 is the composition structural representation of filter tank of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the accompanying drawings and the specific embodiments.
Fig. 1 is the main assembly structural representation of ceramic element dedusting experimental provision of the present invention.As shown in Figure 1, ceramic element dedusting experimental provision of the present invention, comprising: for by the coal ash from outside, from filter tank 6 coal ash, drop into the cast feeder 10 of screw feeders 11; The the first coal ash air mixture obtaining after mixing for the coal ash that the air of outside air pump input is carried with cast feeder 10 is sent to the screw feeder 11 of interference unit 9, particle size measuring instrument 7; For the first coal ash air mixture that screw feeder 11 is sent being applied to the second coal ash air mixture obtaining after interference, through flowmeter 8, be sent to the interference unit 9 of filter tank 6 charging apertures; For the input sample information obtaining respectively after the cleaned air of the first coal ash air mixture of screw feeder 11 transmissions, filter tank 6 outputs is sampled, the particle size measuring instrument 7 that output sample information is sent to host computer 13; For the filter tank recording 6 charging aperture the second coal ash air mixture flows being sent to the flowmeter 8 of host computer 13; For by after adopting ceramic element group to carry out dedusting to the second coal ash air mixture from interference unit 9 under the effect of the blowback air sending in pulse backblowing valve group 5, obtain through dedusting gas, be sent to respectively particle size measuring instrument 7, cast feeder 10 through dedusting coal ash, and upper end pressure, intermediate pressure, lower end pressure, upper end flow velocity, middle flow velocity, lower end flow velocity that blowback air is formed in described filter tank 6 are sent to the filter tank 6 of host computer 13; For the pressurized air obtaining after extraneous air is compressed being sent to the air compressor 1 of gas-holder 2; Be used for the pressurized air that buffer-stored air compressor 1 sends, and pressurized air be sent to the gas-holder 2 of cooling driers 3; For the dry cooling-air pressurized air to from gas-holder 2 being dried, obtain after cooling, by ball valve group 4, pulse backblowing valve group 5, be sent to successively the cooling driers 3 of filter tank 6; The the second coal ash air mixture flow sending for the input sample information that sends according to particle size measuring instrument 7 and output sample information, flowmeter 8 and from upper end pressure, intermediate pressure, lower end pressure, upper end flow velocity, middle flow velocity, the lower end flow velocity of filter tank 6, the air pressure and the regularity of distribution of flow velocity in filter tank 6 and the host computer 13 of blowback completeness that obtain coal ash concentration in the first coal ash air mixture, coal ash particle diameter, filter homogeneity, blowback air produce; Wherein,
Air compressor 1 output terminal is connected with gas-holder 2 input ends, gas-holder 2 output terminals are connected with cooling driers 3 input ends, cooling driers 3 output terminals are connected with ball valve group 4 one end, and ball valve group 4 other ends are connected with pulse backblowing valve group 5 one end, and pulse backblowing valve group 5 other ends are connected with filter tank 6 blowback imports.
Cast feeder 10 input ports are communicated with filter tank 6 first outlets, and cast feeder 10 delivery outlets are communicated with screw feeder 11 first input ports; Screw feeder 11 second input ports are communicated with outside by air pump 122, and screw feeder 11 output terminals are connected with interference unit 9 input ends, particle size measuring instrument 7 first input ends simultaneously; Interference unit 9 output terminal connection traffic meter 8 input ends, flowmeter 8 first output terminals connect filter tank 6 charging apertures, and flowmeter 8 second output terminals connect host computer 13 first input ends; Particle size measuring instrument 7 second input ends connect filter tank 6 second outlets, and particle size measuring instrument 7 output terminals connect host computer 13 second input ends; Filter tank 6 first output terminals, the second output terminal connect respectively host computer the 3rd input end, four-input terminal.
In the present invention, interference unit 9 is for further mix dust and air, the interference producing in simulated field environment simultaneously.
In a word, in ceramic element dedusting experimental provision of the present invention, ceramic element is porous structure, and these apertures are normally invisible to the naked eye.In actual applications, the air that contains dust or dust enters filter tank, ceramic element in filter tank filters the air that contains dust or dust, dust forms filter cake on ceramic element surface, and the filter cake coming off during blowback enters cast feeder to recycle these dusts or dust in experiment by ash bucket; Meanwhile, the cleaned air obtaining is by filter tank the second outlet output.At ceramic element, filter in the process of work, filter cake can stop up the aperture on ceramic element, causes ceramic element filter effect to reduce, and even filters and loses efficacy; Therefore add purge gas by filter tank blowback import, to eliminate the filter cake that sticks on ceramic element inside.Here, the uninterrupted of purge gas can be controlled by pulse backblowing valve group, ball valve group.Based on above-mentioned composition structure, the present invention can realize the research of process, mechanism and effect to dedusting, such as, the air pressure and the regularity of distribution and the blowback completeness of flow velocity in filter tank that can obtain coal ash concentration in the first coal ash air mixture, coal ash particle diameter, filter homogeneity, blowback air produce, the while can be predicted the serviceable life of ceramic element.
Fig. 2 is the composition structural representation of filter tank of the present invention.As shown in Figure 2, in the present invention, filter tank 6 comprises collection chamber 6A, dirt pocket 6B, ash bucket 6C, between collection chamber 6A and dirt pocket 6B, by tube sheet 60, separates; On collection chamber 6A, be provided with blowback import 61, the second outlet 62, collection chamber 6A inside is equiped with three above injectors; In dirt pocket 6B, be provided with three above filter core groups, wherein arbitrary filter core group 65i upper end is provided with upper end knotmeter 66i1, upper end pressure transducer 69i1, knotmeter 66i2, intermediate pressure sensor 69i2 in the middle of being provided with in the middle of arbitrary filter core group 65i, arbitrary filter core group 65i lower end is provided with lower end knotmeter 66i3, lower end pressure transducer 69i3, is also provided with charging aperture 63, the first output terminal 67, the second output terminal 68 on dirt pocket 6B; Ash bucket 6C lower end is provided with the first delivery outlet 66; Wherein,
A corresponding filter core group 65i of injector 64i, and injector 64i is arranged on filter core group 65i upper end; A pulse backblowing valve 5i of an injector 64i respective pulses back-flushing valve group 5, injector 64i nozzle is connected to the described pulse backblowing valve 5i other end by blowback import 61; Blowback import 61, the second outlet 62 are separately positioned on collection chamber 6A both sides; Charging aperture 63 is arranged on dirt pocket 6B bottom.
In practical application, the ceramic element number in the group number of ceramic element group, each ceramic element group all can be determined voluntarily according to actual conditions.In each ceramic element group, select wherein a ceramic element with installing upper end pressure transducer, intermediate pressure sensor, lower end pressure transducer, select wherein another root ceramic element with installing upper end knotmeter, middle knotmeter, lower end knotmeter.Filter tank of the present invention comprises 4 ceramic element groups, and each ceramic element group comprises 3 ceramic elements; During actual use, can on a ceramic element in each ceramic element group, be installed on upper end pressure transducer, intermediate pressure sensor, lower end pressure transducer, upper end knotmeter, middle knotmeter, lower end knotmeter simultaneously; Also can on a ceramic element of each ceramic element group, install upper end pressure transducer, intermediate pressure sensor, lower end pressure transducer, on another root ceramic element of each ceramic element group, install upper end knotmeter, middle knotmeter, lower end knotmeter, specifically install situation and can determine voluntarily according to actual conditions.
In practical application, on tube sheet 60, offer for fixing the circular hole of each filter core group.
In practical application, in ceramic element group, each ceramic element upper port is positioned on tube sheet 60 circular holes.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. a ceramic element dedusting experimental provision, is characterized in that, described experimental provision comprises: for by the coal ash from outside, from filter tank coal ash, drop into the cast feeder of screw feeder; The the first coal ash air mixture obtaining after mixing for the coal ash that the air of outside air pump input is carried with cast feeder is sent to the screw feeder of interference unit, particle size measuring instrument; For the first coal ash air mixture that screw feeder is sent being applied to the second coal ash air mixture obtaining after interference, through flowmeter, be sent to the interference unit of filter tank charging aperture; For the input sample information obtaining respectively after the cleaned air of the first coal ash air mixture of screw feeder transmission, filter tank output is sampled, the particle size measuring instrument that output sample information is sent to host computer; For the filter tank charging aperture recording the second coal ash air mixture flow being sent to the flowmeter of host computer; For by after adopting ceramic element group to carry out dedusting to the second coal ash air mixture from interference unit under the effect of the blowback air sending in pulse backblowing valve group, obtain through dedusting gas, be sent to respectively particle size measuring instrument, cast feeder through dedusting coal ash, and the upper end pressure that blowback air is formed in described filter tank, intermediate pressure, lower end pressure, upper end flow velocity, middle flow velocity, lower end flow velocity are sent to the filter tank of host computer; For the pressurized air obtaining after extraneous air is compressed being sent to the air compressor of gas-holder; Be used for the pressurized air that buffer-stored air compressor sends, and pressurized air be sent to the gas-holder of cooling driers; For the dry cooling-air pressurized air to from gas-holder being dried, obtain after cooling, by ball valve group, pulse backblowing valve group, be sent to successively the cooling driers of filter tank; The the second coal ash air mixture flow sending for the input sample information that sends according to particle size measuring instrument and output sample information, flowmeter and from upper end pressure, intermediate pressure, lower end pressure, upper end flow velocity, middle flow velocity, the lower end flow velocity of filter tank, the air pressure and the regularity of distribution of flow velocity in filter tank and the host computer of blowback completeness that obtain coal ash concentration in the first coal ash air mixture, coal ash particle diameter, filter homogeneity, blowback air produce; Wherein,
Air compressor output terminal is connected with gas-holder input end, gas-holder output terminal is connected with cooling driers input end, cooling driers output terminal is connected with ball valve group one end, and the ball valve group other end is connected with pulse backblowing valve group one end, and the pulse backblowing valve group other end is connected with filter tank blowback import;
Cast feeder input port is communicated with filter tank the first outlet, and cast feeder delivery outlet is communicated with screw feeder the first input port; Screw feeder the second input port is communicated with outside by air pump, and screw feeder output terminal is connected with interference unit input end, particle size measuring instrument first input end simultaneously; Interference unit output terminal connection traffic meter input end, flowmeter the first output terminal connects filter tank charging aperture, and flowmeter the second output terminal connects host computer first input end; Particle size measuring instrument the second input end connects filter tank the second outlet, and particle size measuring instrument output terminal connects host computer the second input end; Filter tank the first output terminal, the second output terminal connect respectively host computer the 3rd input end, four-input terminal.
2. ceramic element dedusting experimental provision according to claim 1, is characterized in that, described filter tank comprises collection chamber, dirt pocket, ash bucket, between collection chamber and dirt pocket, by tube sheet, separates; On collection chamber, be provided with blowback import, the second outlet, collection chamber inside is equiped with three above injectors; In dirt pocket, be provided with three above filter core groups, wherein arbitrary filter core group upper end is provided with upper end knotmeter, upper end pressure transducer, knotmeter, intermediate pressure sensor in the middle of being provided with in the middle of arbitrary filter core group, arbitrary filter core group lower end is provided with lower end knotmeter, lower end pressure transducer, is also provided with charging aperture, the first output terminal, the second output terminal on dirt pocket; Ash bucket lower end is provided with the first delivery outlet; Wherein,
A corresponding filter core group of injector, and injector is arranged on filter core group upper end; A pulse backblowing valve of a corresponding described pulse backblowing valve group of injector, injector nozzle is connected to the described pulse backblowing valve other end by blowback import; Blowback import, the second outlet are separately positioned on collection chamber both sides; Charging aperture is arranged on dirt pocket bottom.
3. ceramic element dedusting experimental provision according to claim 2, is characterized in that, offers for fixing the circular hole of filter core group described in each on described tube sheet.
4. ceramic element dedusting experimental provision according to claim 3, is characterized in that, in described ceramic element group, each ceramic element upper port is positioned on described tube sheet circular hole.
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Inventor after: Li Haixia Inventor after: Lin Long Inventor after: Chen Junjie Inventor after: Gao Bingguang Inventor after: Song Jun Inventor before: Li Haixia Inventor before: Gao Bingguang Inventor before: Chen Junjie Inventor before: Lin Long Inventor before: Song Jun |
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Application publication date: 20140122 |