CN102728161A - Pulse reverse-blowing ash-removing device with flexible blowing pipes - Google Patents
Pulse reverse-blowing ash-removing device with flexible blowing pipes Download PDFInfo
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- CN102728161A CN102728161A CN2012102419716A CN201210241971A CN102728161A CN 102728161 A CN102728161 A CN 102728161A CN 2012102419716 A CN2012102419716 A CN 2012102419716A CN 201210241971 A CN201210241971 A CN 201210241971A CN 102728161 A CN102728161 A CN 102728161A
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Abstract
The invention discloses a pulse reverse-blowing ash-removing device with flexible blowing pipes. The pulse reverse-blowing ash-removing device comprises a plurality of blowing pipelines; the bottom side of each blowing pipeline is provided with a plurality of nozzles; each nozzle is arranged above a gas ejector of a corresponding filtering unit; each blowing pipeline is respectively communicated with a reverse-blowing gas storage tank through a corresponding pulse reverse-blowing valve; each blowing pipeline is composed of an inner pipe and an outer pipe which are arranged in a sealing and sliding mode; the nozzles are arranged on the outer pipes; a blowing hole is formed on the bottom side of the pipe wall at the tail end of each inner pipe; and the other end of each inner pipe is connected with each pulse reverse-blowing valve through a gas supply pipe. When the device disclosed by the invention is used for removing ash in pulse reverse-blowing manner, the inner pipes in the blowing pipelines are controlled to move axially and flexibly relative to the outer pipes, thus the blowing holes on the inner pipes are ensured to be correspondingly coincided with only on nozzle on the outer pipes, and only the nozzle blows high-pressure gases to the corresponding gas ejector, so that the ash removing efficiency and reverse blowing intensity can be improved; and air flow in blowing can be corrected automatically, and thus the phenomenon of deviation of blown air flow is avoided.
Description
Technical field
The invention relates to a kind of gas-solid separating device, relate in particular to a kind of pulse backblowing deashing device that is applicable to having of rigid filter element of telescopic winding-up pipe.
Background technology
In chemical industry, oil, metallurgy, electric power and other industries, often produce high temperature dust gas; Because different process need recover energy and reach environmental emission standard, all needs these high temperature dust gas is carried out dedusting.Gas cleaning at high temperature is under hot conditions, directly to carry out gas solid separation, realizes a technology of gas purification, and it can farthest utilize the physics sensible heat of gas; Potential chemical heat and kinetic force; Improve energy utilization rate, simplify technical process simultaneously, save equipment investment.
Rigid filter elements such as porous sintered metal filter element of processing by metal dust or metallic fiber or ceramic porous filter element; Have good seismic resistance, mechanical strength, high temperature resistant (operating temperature is generally all greater than 500 ℃), corrosion-resistant and thermal shock resistance properties; Simultaneously because they have higher filtering accuracy (basic Ex-all is greater than the particle more than the 5 μ m) and filter efficiency (filter efficiency is up to 99.9%); Therefore be widely used in gas cleaning at high temperature and field of purification; Be used for protecting upstream device, realize the technology separation or reach environmental regulations.
After high temperature dust gas gets into filter; Dust granules thing in the air-flow is intercepted at the outer surface of filter element, forms cake layer, and gas enters into subsequent technique through the porous channel in the filter element; Gas after filtering is clean gas, and dust concentration is very little.Along with the carrying out of filtration time, the muffin layer progressive additive of filter element outer surface causes the pressure drop of filter element to increase, and at this moment need adopt the mode of blowback to realize the quality rebuilding of filter element; The direction and the filtered airflow of blowback air-flow are in the opposite direction; High pressure blowback air-flow moment enters into the inside of filter element; The muffin layer that relies on the transient energy that produces will be attached to filter element surface is peeled off; Make state when the resistance of filter element returns to initial filtration basically, thereby realize the regeneration of filter element performance.
The pulse backblowing mode is the important channel of realizing the filter element circular regeneration, and the pulse backblowing device is the important assurance and crucial composition of filter stable operation.Shown in Fig. 4 A, be the refractory ceramics filter of existing commercial Application or the structural representation of high temperature sintering metallic filter and pulse backblowing device thereof.The filter tube sheet 94 of said filter 9 is divided into top clean gas chamber and bottom dusty gas chamber with the inner space of ceramic filter; Filter tube sheet 94 is a square structure, on tube sheet 94, installs tens usually to hundreds of root filter element 95; Filter element 95 is arranged according to the equidistant mode of ranks on square tube sheet 94, shown in Fig. 4 B; Filter element 95 is that unit is divided into some groups with " OK ", and common every row is provided with several to tens filter elements; The pulse backblowing device mainly is made up of purge gas storage tank 91, pulse backblowing valve 92, blowback pipeline 93 and nozzle 931; Winding-up pipeline 93 is positioned at the clean gas chamber interior of filter; Every capable filter element 95 corresponding winding-up pipelines 93, each winding-up pipeline 93 is provided with a plurality of nozzles 931, corresponding filter element 95 under each nozzle 931; The nozzle 931 of said blowback pipeline 93 keeps certain distance with filter element 95 tops; The technology ash-laden gas is entered into the inside of filter by air inlet pipeline 96; After air-flow arrives filter element 95; The dust granules thing is intercepted at the outer surface of porous filter elements 95; Gas then is pooled to the clean gas chamber behind the internal capillary through filter element 95, is clean gas through the gas that filters after element 95 filters, and clean gas gets into subsequent technique through export pipeline 97.
Dust granules thing in the technology ash-laden gas builds up at the outer surface of filter element 95, along with the carrying out of filtration time, and the dust layer progressive additive of filter element outer surface; The resistance that filters increases; The pressure drop that shows as filter element increases, and when pressure drop is increased to a certain degree, just needs to adopt the mode of pulse backblowing to remove the dust layer attached to filter element surface; The dust that is blown off by the blowback air-flow falls into the ash bucket 98 of filter, regularly removes.This process is called the pulse backblowing regenerative process of filter element.
During the pulse backblowing deashing; The pulse backblowing valve 92 that is in normally off opens that (this process duration is very short; Be generally 200ms 300ms), (according to technological requirement can be compressed air, nitrogen or other purge gas that meets the demands to the gas that is higher than filter operation pressure twice in the purge gas storage tank 91.Usually; For satisfying the requirement of deashing; The pressure of purge gas will be higher than more than the twice of filter operation pressure) moment gets in the winding-up pipelines 93 through pulse backblowing valve 92; Then through winding-up each nozzle 931 on the pipeline to the very high blowback air-flow (shown in the filled arrows among Fig. 4 A) of filter element 95 internal spray speed, utilize the energy of the transient state of blowback air-flow that the dust layer of filter element 95 outer surfaces is peeled off, realized the quality rebuilding of filter element.
Above-mentioned blowback process is that unit divides into groups to carry out with " OK "; After the i.e. first horizontal pulse back-flushing valve, 92 corresponding winding-up pipeline 93 blowbacks finish this row filter element; Pulse backblowing valve 92 through second row behind the certain hour is opened, and the filter element of blowback second row is opened through the third line pulse backblowing valve behind the certain hour 92 again; The filter element of blowback the third line ... By that analogy, move in circles.
The injection hole (nozzle) of existing such pulse backblowing device is opened on the winding-up pipeline, controls the delegation's filter element while deashing under the pulse jet pipeline through a pulse backblowing valve during deashing, so be referred to as the horizontal pulse winding-up again.But mainly there is following several problem in the pulse backblowing device of this capable blowing type that existing industrial filter adopts:
(1) the blowback air-flow is inhomogeneous.
As shown in Figure 5; After high pressure purge gas (among the figure shown in the arrow) gets into winding-up pipeline 93; Air-flow in the winding-up pipeline flows to the b direction along a, and the air velocity in the pipeline of jetting this moment is very high, and the blowback process is a very short transient process of duration; Purge gas can be compressed in winding-up pipeline terminal position b process of flowing, causes the inhomogeneous of interior speed of pipeline and pressure of jetting; Along blowing direction; The axial velocity of air-flow reduces gradually, static pressure increases gradually; Make gas energy constantly superpose in this process; When causing air-flow by 931 ejections of each nozzle, there is very big difference in gas flow, near the throughput of the nozzle 931 of the pulse backblowing valve 92 1 ends throughput less than the nozzle 931 of the terminal equivalent diameter of winding-up pipeline.Therefore; When 931 pairs of filter elements of nozzle 95 carry out reverse gas cleaning; The blowback air flow that comes out from each nozzle differs bigger; Because the stream pressure and the mass flow discrepancy of the ejection of each nozzle will cause with in delegation's filter element, corresponding those ejection stream pressures and flow are better than those corresponding stream pressures and the flow filter element than small nozzle than the suffered deashing energy of the filter element of giant.The filter element that suffered deashing energy is strong is thorough with deashing, and resistance is little behind the deashing, and incomplete deashing can appear in the weak filter element of deashing energy, makes its filtration resistance constantly increase and causes premature failure.Along with the filter increase of running time, this uneven difference can be more and more obvious, finally can influence the monolithic stability operation of filter.
(2) blowback air-flow skewness is serious.
In the pulse dust cleaning winding-up pipeline, along the winding-up airflow direction, dynamic pressure converts static pressure gradually into, and spout place flow velocity also raises gradually, and has certain eccentric angle; Reason is that the interior air velocity of winding-up pipeline is axial, at winding-up mouthful place, produces a radial velocity by static pressure, and speed is synthesized its direction of back and an angle is radially arranged, and therefore can have certain eccentric angle, thereby produces the air-flow skewness of jetting.During pulse dust cleaning, velocity attitude and angle radially are big more, and air-flow is serious more to the impact of filter element.Along winding-up pipeline blowing direction, axial velocity reduces in the pipeline, and static pressure increases, and the terminal axial velocity of winding-up pipe is almost nil.By the radial velocity increase that differential static pressure produces, air velocity direction and angle radially also just reduce gradually, and the increase of the interior static pressure of winding-up pipe helps the blowback air-flow and jets vertically downward.Therefore, this " a winding-up pipeline is provided with a plurality of structure of nozzle " causes the air-flow of each nozzle ejection to have skewness in various degree, and the closer to the nozzle of pulse backblowing valve one end, the air-flow skewness during its blowback is serious more.When skewness takes place; Pulse backblowing air-flow after coming out from nozzle can not get into filter element inside fully, influences ash-removal effect, and the winding-up air-flow that pipeline sprayed tilts; Will cause the deflection air-flow that the brute force of filter element is impacted, influence the normal service life of filter element.
(3) the deashing intensity and the cleaning efficiency of blowback air-flow are low.
Ash-removal effect mainly is reflected on deashing intensity and the cleaning efficiency; Pressure peak, pressure climbing speed in the filter element is two important indicators weighing ash-removal effect.Pressure peak is meant pulse jet moment, the maximum pressure that the deashing air-flow of back-blowing device ejection produces; When the pressure climbing speed was meant winding-up, certain point pressure peak value and pressure were from the ratio that is raised to peak value institute elapsed-time standards above freezing in the filter element.Pressure peak is high, and the pressure climbing speed is favourable to ash-removal effect soon.
The ash-removal effect of pulse backblowing is by the energy decision of the gas of each nozzle ejection.During pulse backblowing; Except " jet " of depending nozzle ejection; " secondary drainage " that produces when also needing an air-flow high-speed motion; Described secondary drainage depends on the energy size of a jet, and the gas energy of the two generation gets into filter element inside jointly, accomplishes the reverse gas cleaning operation.
This multi-jet project organization in the prior art; " amount of jet " of each nozzle is less; Can not induce the more clean gas of nozzle to form the deashing air-flow, " secondary drainage " of its generation is very limited, so can not make pressure peak and pressure climbing speed in the filter element arrive higher value; Therefore the intensity and the cleaning efficiency of reverse gas cleaning are all undesirable, influence the effect of pulse backblowing deashing.Simultaneously; Because the blowback air-flow directly gets into the inside of filter element; There are certain temperature difference in the temperature of purge gas and the temperature of filter operation, so easily filter element is caused bigger thermal shock, will cause filter element situation such as fatigue failure and fracture to occur when serious.
Thus, the inventor relies on experience and the practice of being engaged in relevant industries for many years, proposes a kind of pulse backblowing deashing device that has telescopic winding-up pipe, to overcome the defective of prior art.
Summary of the invention
The object of the present invention is to provide a kind of pulse backblowing deashing device that has telescopic winding-up pipe, problem such as air-flow deflection during in the hope of the maldistribution that overcomes blowback air-flow in the prior art and blowback, thus increase the cleaning efficiency and the blowback intensity of pulse backblowing.
Another object of the present invention is to provide a kind of pulse backblowing deashing device that has telescopic winding-up pipe, it is provided with the throughput that gas ejector can significantly increase secondary injection, and can reduce the thermal shock of purge gas to filter element.
The objective of the invention is to realize like this; A kind of pulse backblowing deashing device that has telescopic winding-up pipe; Said pulse backblowing deashing device is arranged on the top of filter; The tube sheet of said filter is provided with multirow and is the filter element that longitudinal separation is arranged, and is provided with mutually the number and the filter element of setting on the same group at interval in every row; The corresponding every group of filter element of tube sheet upside is provided with a gas ejector; The filter tube sheet is the clean gas chamber on top and the dusty gas chamber of bottom with the filter sealed separation; Said pulse backblowing deashing device include the top that is horizontally set on filter and with the corresponding a plurality of winding-up pipelines that laterally arrange of each row filter element; The said pipeline bottom side of respectively jetting is provided with a plurality of nozzles, and said nozzle is by the filter top end portion of inserting into the inner and fixing, and each nozzle is arranged on the gas ejector top of corresponding filter element; The said pipeline of respectively jetting is communicated in a blowback air accumulator through a corresponding pulse backblowing valve respectively separately; Interior pipe and outer tube that the said pipeline of respectively jetting is established by sealed sliding constitute; Said nozzle is arranged on the outer tube, and the terminal tube wall bottom side of said interior pipe is provided with an injection hole, and the other end of said interior pipe passes through air supply pipe and is connected with the pulse backblowing valve.
In a preferred embodiments of the present invention, comprise a filter element in said every group of filter element at least.
In a preferred embodiments of the present invention, said filter element is the rigid filter element; Said rigid filter element is ceramic chimney filter or sintering metal chimney filter.
In a preferred embodiments of the present invention, the interior external diameter of pipe of said winding-up pipeline is identical with outer tube diameter, and said interior pipe is a matched in clearance with outer tube.
In a preferred embodiments of the present invention, the diameter of said injection hole is identical with the diameter of nozzle.
In a preferred embodiments of the present invention, said blowback air accumulator is arranged on the axially movable straight line mobile device of outer tube.
In a preferred embodiments of the present invention, said linear moving apparatus is made up of a slideway.
In a preferred embodiments of the present invention, said linear moving apparatus is made up of a track and mobile in orbit wheel seat; Said blowback air accumulator is arranged on the said wheel seat.
In a preferred embodiments of the present invention, said gas ejector from top to bottom order includes infundibulate air inlet, cylindrical changeover portion, flaring cone body section and rectangle bottom; Said flaring cone body section upper end is connected with cylindrical changeover portion, and the lower end is connected with the rectangle bottom.
From the above mentioned; The present invention has the pulse backblowing deashing device of telescopic winding-up pipe in the pulse backblowing deashing process; Interior pipe through in the control winding-up pipeline moves as axial stretching with respect to outer tube, guarantee at synchronization, the injection hole on the interior pipe only with outer tube on the corresponding coincidence of a nozzle; And only by the gas ejector winding-up gases at high pressure of this nozzle to correspondence; Flowed energy is concentrated and is acted on the corresponding filter element of this gas ejector, can overcome the uneven defective of blowback air-flow in the prior art, and cleaning efficiency and blowback intensity are increased greatly; Simultaneously; Under the situation of having only a nozzle winding-up; The interior pipe of winding-up pipeline is equivalent to a plenum chamber, and air-flow with automatic guiding the phenomenon of air-flow deflection of the prior art can not take place when therefore jetting; Deflection air-flow when having reduced blowback can improve the service life of rigid filter element thus to the impact of filter element.
Description of drawings
Following accompanying drawing only is intended to the present invention is done schematic illustration and explanation, not delimit the scope of the invention.Wherein:
Figure 1A: the structural representation that has the pulse backblowing deashing device of telescopic winding-up pipe for the present invention.
Figure 1B: the structural representation that on tube sheet, is provided with for filter element among the present invention.
Fig. 2: be the structural representation of telescopic winding-up pipeline among the present invention.
Fig. 3: be the structural representation of gas ejector among the present invention.
Fig. 4 A: be the refractory ceramics filter of existing commercial Application or the structural representation of high temperature sintering metallic filter and pulse backblowing device thereof.
Fig. 4 B: be the arrangement mode sketch map on tube sheet of filter element in the prior art.
Fig. 5: be the structural representation of winding-up pipeline in the prior art.
The specific embodiment
To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast the description of drawings specific embodiment of the present invention at present.
Shown in Figure 1A; The present invention proposes a kind of pulse backblowing deashing device 100 that has telescopic winding-up pipe; Said pulse backblowing deashing device 100 is arranged on the top of filter 200; The tube sheet 21 of said filter 200 is provided with multirow and is the filter element 22 that longitudinal separation is arranged, and is provided with mutually the number and the filter element of setting on the same group at interval in every row; The corresponding every group of filter element 22 of tube sheet 21 upsides is provided with a gas ejector 23; Filter tube sheet 21 is the clean gas chamber 24 on top and the dusty gas chamber 25 of bottom with the filter sealed separation, and dusty gas chamber 25 is provided with ash-laden gas import 26, and clean gas chamber 24 is provided with clean gas outlet 27, and filter bottom is provided with ash bucket 28; Said pulse backblowing deashing device 100 include the top that is horizontally set on filter 100 and with each row filter element 22 corresponding a plurality of winding-up pipeline 11 that laterally arrange; Said pipeline 11 bottom sides of respectively jetting are provided with a plurality of nozzles 1121, and said nozzle 1121 is by the filter 100 top portions of inserting into the inner and fixing, and each nozzle 1121 is arranged on gas ejector 23 tops of corresponding filter element 22; The said pipeline 11 of respectively jetting is communicated in a blowback air accumulator 13 through a corresponding pulse backblowing valve 12 respectively separately; As shown in Figure 2, the interior pipe 111 that the said pipeline 11 of respectively jetting is established by sealed sliding constitutes with outer tube 112; Said nozzle 1121 is arranged on the outer tube 112, and said interior pipe 111 terminal tube wall bottom sides are provided with an injection hole 1111, and the other end of said interior pipe 111 passes through air supply pipe 14 and is connected with pulse backblowing valve 12.In this embodiment, in said every group of filter element 22 one or more filter element 221 can be set, many filter elements 221 can be by square region setting (shown in Figure 1B), also can be by circle or elliptical region setting; Said filter element 221 is ceramic chimney filter or porous sintered metal chimney filter.
Shown in Figure 1A, the high-temperature technology ash-laden gas enters into the inside of filter 100 by ash-laden gas import 26, after dust-contained airflow arrives filter element 221; Through the mode of filtering; The dust granules thing is intercepted at the outer surface of porous filter elements 221, and gas then through the internal capillary of filter element 221, is pooled to clean gas chamber 24 through behind the gas ejector 23; Gas through filtering after element 221 filters is clean gas, and clean gas gets into subsequent technique through clean gas outlet 27.Because the dust layer thickness of filter element surface increases, cause the resistance of filter element 221 to increase, when resistance is increased to a certain degree, need to use the pulse backblowing deashing device to carry out deashing, the muffin on filter element 221 surfaces is peeled off, make its quality rebuilding.When the pulse backblowing deashing; The interior pipe 111 of control winding-up pipeline 11 moves axially along outer tube 112; Pipe 111 every distances that move an appointment at regular intervals in making; The spacing of adjacent two nozzles 1121 equates on the distance of said this appointment and the outer tube 112, so whenever move the distance of an appointment after, said injection hole 1111 is overlapped with each nozzle 1121 in order; Pipe 111 these terminal injection holes 1111 align with the nozzle 1121 of outer tube terminal (high order end among Fig. 2) and overlap in supposing at this moment; The pulse backblowing valve 12 that is in normally off is opened; Gases at high pressure in the blowback air accumulator 13 get in the interior pipe 111 of winding-up pipeline 11 through winding-up pipeline air supply pipe 14 and pulse backblowing valve 12 afterwards; Get into the ejection of these nozzles 1121 back through the injection hole of interior pipe 111 1111, reaching under the jet action of purge gas at a high speed under the drainage of gas ejector 23, jet and a large amount of secondary gas flows enter in the gas ejector 23; After in gas ejector 23, carrying out diffusion and rectification; Get into the inside of filter element 221, the transient energy of utilizing purge gas to produce is peeled off the muffin layer of filter element 221 outer surfaces, realizes filter element 221 quality rebuildings.Injection hole 1111 because jet this moment on the interior pipe 111 of pipeline 11 does not overlap with other nozzles 1121; Can only from a nozzle 1121 of outer tube end, spray with regard to all air-flows in the pipe 111 in making like this; All flowed energies are concentrated and are affacted the filter element corresponding with this nozzle 22, and cleaning efficiency and blowback intensity are increased greatly.Through behind the certain hour; The interior pipe 111 of winding-up pipeline 11 moves the distance of an appointment again, and the injection hole 1111 on the at this moment interior pipe 111 and another adjacent nozzle 1121 corresponding coincidences of the terminal nozzle of outer tube are carried out the pulse backblowing deashing to this group filter element 22; Deashing process is same as described above; By that analogy, move in circles, all accomplish the pulse backblowing deashing process up to each group filter element 22.
From the above mentioned; The present invention has the pulse backblowing deashing device of telescopic winding-up pipe in the pulse backblowing deashing process; Interior pipe through in the control winding-up pipeline moves as axial stretching with respect to outer tube, guarantee at synchronization, the injection hole on the interior pipe only with outer tube on the corresponding coincidence of a nozzle; And only by the gas ejector winding-up gases at high pressure of this nozzle to correspondence; Flowed energy is concentrated and is acted on the corresponding filter element of this gas ejector, can overcome the uneven defective of blowback air-flow in the prior art, and cleaning efficiency and blowback intensity are increased greatly; Simultaneously, under the situation of having only a nozzle winding-up, the interior pipe of winding-up pipeline is equivalent to a plenum chamber, and air-flow with automatic guiding the phenomenon of air-flow deflection of the prior art can not take place when therefore jetting, and can improve the service life of rigid filter element thus.
Further; In this embodiment; Interior pipe 111 external diameters of said winding-up pipeline 11 are identical with outer tube 112 internal diameters; Pipe 111 is a matched in clearance with outer tube 112 in said, and interior pipe 111 and outer tube 112 are provided with sealing ring near the link position of pulse backblowing valve 12 1 sides, to guarantee the seal request in sliding process; When interior pipe moved, interior pipe 111 can directly not contact the inner surface of outer tube 112, can reduce friction the gas leak phenomenon when avoiding blowback simultaneously between interior pipe and the outer tube.
In this embodiment, the diameter of said injection hole 1111 is identical with the diameter of nozzle 1121; Shown in Figure 1A, said each blowback air accumulator 13 is arranged on outer tube 112 axially movable straight line mobile devices 15.In this embodiment, each winding-up pipeline 11 a corresponding pulse backblowing valve 12 and purge gas air supply pipe 14, each winding-up pipeline 11 is provided with a blowback air accumulator 13 and linear moving apparatus 15 separately.
Said linear moving apparatus 15 can be made up of a slideway, and said each blowback air accumulator 13 is set directly on this slideway, and is pressed the distance that certain hour moves an appointment at interval by control.
Shown in Figure 1A, in the another embodiment of this embodiment, said linear moving apparatus 15 also can be made up of a track 151 and the wheel seat 152 that on track 151, moves; Said blowback air accumulator 13 is arranged on the said wheel seat 152; Said wheel seat 152 is regulated (not shown) by a control system, can control the distance that horizontal direction moves accurately.
As shown in Figure 3, in this embodiment, said gas ejector 23 from top to bottom order includes infundibulate air inlet 231, cylindrical changeover portion 232, flaring cone body section 233 and rectangle bottom 234; Said flaring cone body section 233 upper ends are connected with cylindrical changeover portion 232, and the lower end is connected with rectangle bottom 234.Tapered air inlet and flaring tapering part be owing to adopted columniform changeover portion, reduced the irreversible loss in jet and the secondary drainage mixed process, effectively increased energy and momentum-exchange between the two; In diffuser, the kinetic energy of fluid-mixing be converted into pressure can, the diffusion of injector outlet fully mixing and the deashing air-flow that exchanged energy evenly distributes and is delivered to filter element, reaches ash-removal effect; Simultaneously the deashing kinetic energy of filter element is evenly distributed, reduce the thermal shock of deashing air-flow, help prolonging the service life of filter element.
The pulse backblowing deashing device that the present invention has telescopic winding-up pipe compared with prior art has the following advantages:
1. overcome the uneven phenomenon of blowback air-flow.
The uneven phenomenon of blowback air-flow during to the back-blowing device deashing of " piece a winding-up pipeline on have a plurality of injection holes " in the prior art; The present invention starts with from the structure of winding-up pipeline; Propose a kind of pulse backblowing device that has telescopic winding-up pipe, fundamentally solved this problem.Simultaneously; The arrangement mode that filter element in the filter of the prior art is divided into groups according to " OK "; Proposed filter element is arranged in the arrangement mode that a plurality of square region are divided into groups; Synchronization has only the gas ejector winding-up gases at high pressure of a nozzle to correspondence, and flowed energy can be concentrated and act on the corresponding filter element of this gas ejector, helps the long-term stability operation of filter.
2. air-flow deflection when avoiding blowback takes place.
Synchronization has only under the situation of a nozzle winding-up; The interior pipe of winding-up pipeline is equivalent to a plenum chamber; Air-flow is with automatic guiding during winding-up; The phenomenon of air-flow deflection of the prior art can not take place, and the air-flow deflection when having reduced blowback is to the thermal shock of filter element, so the service life that can improve the rigid filter element.
3. improve the deashing intensity and the cleaning efficiency of blowback air-flow.
The present invention is provided with gas ejector above filter element; Compare prior art; Pulse backblowing device of the present invention flowed energy owing to a jet when blowback is high; And injector can increase the tolerance of secondary drainage, makes jet air-flow and secondary drainage from nozzle get into the gas ejector air inlet together, through in main paragraph, carrying out diffusion and rectification behind the changeover portion; Get into filter element inside then, completion can improve pressure peak and the pressure climbing speed in the filter element when reverse gas cleaning of filter element is operated largely.Therefore, can improve the deashing intensity and the cleaning efficiency of blowback air-flow; Simultaneously; Because the secondary drainage effect of injector makes energy and the temperature of purge gas in injector mix, the temperature difference when having reduced the operation of purge gas and filter element; Therefore can reduce the thermal shock of deashing air-flow, help prolonging filter element service life.
The above is merely the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.
Claims (9)
1. pulse backblowing deashing device that has telescopic winding-up pipe; It is characterized in that: said pulse backblowing deashing device is arranged on the top of filter; The tube sheet of said filter is provided with multirow and is the filter element that longitudinal separation is arranged, and is provided with mutually the number and the filter element of setting on the same group at interval in every row; The corresponding every group of filter element of tube sheet upside is provided with a gas ejector; The filter tube sheet is the clean gas chamber on top and the dusty gas chamber of bottom with the filter sealed separation; Said pulse backblowing deashing device include the top that is horizontally set on filter and with the corresponding a plurality of winding-up pipelines that laterally arrange of each row filter element; The said pipeline bottom side of respectively jetting is provided with a plurality of nozzles, and said nozzle is by the filter top end portion of inserting into the inner and fixing, and each nozzle is arranged on the gas ejector top of corresponding filter element; The said pipeline of respectively jetting is communicated in a blowback air accumulator through a corresponding pulse backblowing valve respectively separately; Interior pipe and outer tube that the said pipeline of respectively jetting is established by sealed sliding constitute; Said nozzle is arranged on the outer tube, and the terminal tube wall bottom side of said interior pipe is provided with an injection hole, and the other end of said interior pipe passes through air supply pipe and is connected with the pulse backblowing valve.
2. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 1 is characterized in that: comprise a filter element in said every group of filter element at least.
3. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 2 is characterized in that: said filter element is the rigid filter element; Said rigid filter element is ceramic chimney filter or sintering metal chimney filter.
4. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 1 is characterized in that: the interior external diameter of pipe of said winding-up pipeline is identical with outer tube diameter, and said interior pipe is a matched in clearance with outer tube.
5. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 1 is characterized in that: the diameter of said injection hole is identical with the diameter of nozzle.
6. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 1 is characterized in that: said blowback air accumulator is arranged on the axially movable straight line mobile device of outer tube.
7. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 6, it is characterized in that: said linear moving apparatus is made up of a slideway.
8. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 6 is characterized in that: said linear moving apparatus is made up of a track and mobile in orbit wheel seat; Said blowback air accumulator is arranged on the said wheel seat.
9. the pulse backblowing deashing device that has telescopic winding-up pipe as claimed in claim 1 is characterized in that: said gas ejector from top to bottom order includes infundibulate air inlet, cylindrical changeover portion, flaring cone body section and rectangle bottom; Said flaring cone body section upper end is connected with cylindrical changeover portion, and the lower end is connected with the rectangle bottom.
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| CN2012102419716A CN102728161A (en) | 2012-07-12 | 2012-07-12 | Pulse reverse-blowing ash-removing device with flexible blowing pipes |
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| CN2012102419716A CN102728161A (en) | 2012-07-12 | 2012-07-12 | Pulse reverse-blowing ash-removing device with flexible blowing pipes |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110316565A (en) * | 2018-03-28 | 2019-10-11 | 诺特克智能设备南京有限公司 | A kind of sending cans of built-in dust pelletizing system |
| CN110410181A (en) * | 2019-08-06 | 2019-11-05 | 浙江玖昱科技有限公司 | A kind of exhaust gas processing device with carbon distribution blowing function |
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| CN111841115A (en) * | 2020-08-10 | 2020-10-30 | 浙江独山能源有限公司 | Novel metal sintering filter cleaning device |
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| WO2014079160A1 (en) * | 2012-11-22 | 2014-05-30 | 中国石油大学(北京) | Self-oscillating nozzle and pulse-aided back-flushing ash cleaning apparatus of filter equipped with self-oscillating nozzle |
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| CN102961934A (en) * | 2012-11-22 | 2013-03-13 | 中国石油大学(北京) | Self-oscillation nozzle and filter pulse jet cleaning ash-removing device with same |
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| CN103205284A (en) * | 2013-05-03 | 2013-07-17 | 袁源 | Coal gasification ash content treatment device and method |
| CN103528931A (en) * | 2013-10-11 | 2014-01-22 | 河南理工大学 | Dedusting experimental apparatus for ceramic filter core |
| CN104107603A (en) * | 2014-07-11 | 2014-10-22 | 中国石油大学(北京) | Filter device for purifying high-temperature gas |
| CN104107603B (en) * | 2014-07-11 | 2015-07-08 | 中国石油大学(北京) | Filter device for purifying high-temperature gas |
| CN105521662A (en) * | 2014-09-30 | 2016-04-27 | 上海安赐环保科技股份有限公司 | Filter unit and technique applicable to gas purification in organosilicon industry |
| CN105233582A (en) * | 2015-10-09 | 2016-01-13 | 岳波 | Filter bag dust remover with self-circulating ash removal device |
| CN106902589A (en) * | 2017-03-21 | 2017-06-30 | 中磁科技股份有限公司 | Moveable high-pressure back-blowing device |
| CN107149831A (en) * | 2017-06-29 | 2017-09-12 | 宿州冬宇环保科技有限公司 | A kind of industrial filter cartridge type cleaner |
| CN107321088B (en) * | 2017-08-22 | 2018-07-03 | 新乡市新垣防腐保温制品有限公司 | A kind of high efficiency dust processor |
| CN107335297A (en) * | 2017-08-23 | 2017-11-10 | 中国华能集团清洁能源技术研究院有限公司 | A kind of compact pulse backblowing cleaning ash filter |
| CN107376619A (en) * | 2017-09-01 | 2017-11-24 | 苏州百硕自动化环保设备有限公司 | A kind of flue gas desulfurization device |
| CN110316565A (en) * | 2018-03-28 | 2019-10-11 | 诺特克智能设备南京有限公司 | A kind of sending cans of built-in dust pelletizing system |
| CN109621569A (en) * | 2019-01-10 | 2019-04-16 | 中国石油大学(北京) | From tuning recurrent pulses jet nozzle and filter |
| CN109621569B (en) * | 2019-01-10 | 2024-02-02 | 中国石油大学(北京) | Self-direction-regulating periodic pulse jet nozzle and filter |
| CN109971497A (en) * | 2019-03-02 | 2019-07-05 | 汤宇 | Ram vehicle-mounted dust removing system with wind curtain type hood |
| CN110410181A (en) * | 2019-08-06 | 2019-11-05 | 浙江玖昱科技有限公司 | A kind of exhaust gas processing device with carbon distribution blowing function |
| CN111054158A (en) * | 2019-12-25 | 2020-04-24 | 郴州旗滨光伏光电玻璃有限公司 | Back-blowing cleaning system and method for filter element of filter house of glass melting furnace |
| CN111841115A (en) * | 2020-08-10 | 2020-10-30 | 浙江独山能源有限公司 | Novel metal sintering filter cleaning device |
| CN111841115B (en) * | 2020-08-10 | 2021-09-21 | 浙江独山能源有限公司 | Novel metal sintering filter cleaning device |
| CN117029486A (en) * | 2023-10-08 | 2023-11-10 | 湘潭锐华电瓷电器制造有限公司 | Oxide ceramic product sintering furnace |
| CN117029486B (en) * | 2023-10-08 | 2023-12-19 | 湘潭锐华电瓷电器制造有限公司 | Oxide ceramic product sintering furnace |
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Application publication date: 20121017 |