CN101259352A - Sound wave ashing coal gas bag-type dust remover - Google Patents
Sound wave ashing coal gas bag-type dust remover Download PDFInfo
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- CN101259352A CN101259352A CNA2007101854131A CN200710185413A CN101259352A CN 101259352 A CN101259352 A CN 101259352A CN A2007101854131 A CNA2007101854131 A CN A2007101854131A CN 200710185413 A CN200710185413 A CN 200710185413A CN 101259352 A CN101259352 A CN 101259352A
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Abstract
The invention relates to an ash-cleaning coal gas bag-type dust remover by sound wave. the structure of the dust remover is that a filter bag is arranged on a baffle inside the box body of the dust remover; an ash valve is arranged on an ash opening at the bottom of the box body; pressure sensors are positioned inside the inlet and the outlet of the box body; a signal wire-z of the sensor is connected with a differential pressure controller; a sound wave duct is connected at the position of opening at the side wall of the box body in a sealing way; the other end of the sound wave duct is connected with a sound generator via a air-powered ball valve; a normally closed solenoid valve is connected at the air inlet of the sound generator; an inlet valve is connected with the inlet of the dust remover; a work drive motor of the sound generator, the differential pressure controller, the inlet valve of the dust remover, the air-powered ball valve and an electric control cable of the normally closed solenoid valve are all connected with a control mechanism. The dust remover of the invention has the advantages of good dust removing effect no damage to the filter bag, low operation cost and no damage to the environment and human body and has the advantages that the operational service life of the filter bag can be prolonged and the protect and maintenance are simple and convenient.
Description
Technical field
The present invention relates to a kind of industrial sack cleaner, specifically a kind of sound wave ashing coal gas bag-type dust remover.
Background technology
At production industries such as metallurgy, chemical industry, electric power, municipal administrations, all need the dust-laden coal gas that produces is carried out purifying and dedusting, used deduster is based on sack cleaner.Its structure is in the casing of deduster dividing plate to be housed, be lifted with some filter bags below the dividing plate, the ash discharging hole of bottom half is equipped with ash-valve, in the import of wall box and outlet pressure sensor is housed respectively, and the holding wire of two sensors is connected on the differential pressure controller.Dust-laden coal gas enters in the deduster casing via the import of deduster, after the filter bag that passes through each lifting is with dust-filtering, enters the cabinet space on dividing plate top, utilizes after the outlet output by deduster then again.Along with the increase of filtration time, the dust of filter bag surface adhesion also just constantly increases, and filter capacity constantly descends, and filtration resistance then constantly rises thereupon, thus the operate as normal of the work system of having influence on and deduster.Therefore various sack cleaners all must be equipped with deashing device, handle in time filter bag is carried out deashing, in time clean out the dust that sticks on the filter bag, make the deduster recovery and keep normal dust collection capacity.Sack cleaner mostly also all is now to distinguish and name with the purge mode that is adopted.
The purge mode that is adopted on coal gas bag-type dust remover at present mainly includes two types of anti-blow cleaning dust and pulse dust cleanings.
The anti-blow cleaning dust mode is to adopt sequence controller to control opening and turn-offing of booster fan and each valve, impels the airflow direction in the deduster to change, thereby filter bag is constantly held round repeatedly and flattens, and reaches the purpose of anti-blow cleaning dust thus.The anti-blow cleaning dust mode all can produce certain influence to operate as normal, purified gas content, life-span of the filter bag, filtration load and the environmental pollution of deduster.Particularly can cause during blowback wind the radial expansion amount of filter bag to strengthen, in this process, the circular mounting at filter bag two ends with squeeze flat changeover portion and can be subjected to the bigger power of tearing, the filter bag fibr tissue that makes this section frequent is holding round, is squeezing under the flat role of tear power and occur easily fractureing or fracture phenomena, thereby badly influences the service life of filter bag.
The pulse dust cleaning mode is to adopt pulse valve burst pressure gas, forms air pulse, and filter bag is carried out deashing.For improving impulsive force, the deashing device that has also has been equipped with injector when adopting pulse valve, so that the dust that sticks on the filter bag is carried out the air-flow injection simultaneously.But the pulse dust cleaning mode is less to the float force that filter bag produced, so filter bag is long more, and ash-removal effect is just undesirable more.Dust composition more complicated in the special coal gas also contains certain moisture, and the deashing difficulty that this has just increased the pulse dust cleaning mode causes the ash-removal effect of this purge mode relatively poor.
In addition, the auxiliary equipment of these two kinds of soot cleaning systems is more complicated also, and acquisition cost is relative with operating cost higher, and ash-removal effect is not ideal.
Summary of the invention
Purpose of the present invention just provide a kind of brand-new, utilize low-frequency sound wave coal gas bag-type dust remover to be carried out the sound wave ashing coal gas bag-type dust remover of deashing, to overcome the deficiency that existing coal gas bag-type dust remover soot cleaning system exists, improve the ash-removal effect and the operating efficiency of coal gas bag-type dust remover.
The object of the present invention is achieved like this: a kind of sound wave ashing coal gas bag-type dust remover, in the casing of deduster, dividing plate is housed, be lifted with some filter bags below the dividing plate, on the ash discharging hole of bottom half, ash-valve is installed, in the import of wall box and outlet pressure sensor is housed respectively, the holding wire of two sensors is connected to differential pressure controller; Lower sidewall at casing is provided with opening, and at the opening part acoustic waveguide tube that is tightly connected, the other end of acoustic waveguide tube connects sonic generator through pneumatic ball valve, is connected to normally closed solenoid valve on the air inlet of sonic generator; In the import of deduster, be connected to the deduster imported valve; The electrical control lines of the work drive motor of sonic generator, differential pressure controller and deduster imported valve, pneumatic ball valve and normally closed solenoid valve all is connected on the controlling organization.
Design philosophy of the present invention is exactly that a cover low-frequency sound wave generating means is installed on coal gas bag-type dust remover, utilizes low-frequency sound wave that filter bag is carried out deashing.
The operation principle of apparatus of the present invention is: send low-frequency sound wave by sonic generator, this low-frequency sound wave imports by acoustic waveguide tube in the casing of deduster, forms the high strength sound field.Under the large amplitude oscillation action of this high strength sound field, the interfibrous adhesion of adhesion, dust particle and filter bag in the filter bag dust stratification layer between dust particle and the surface tension of dust stratification layer etc. all can decrease.Afterwards, " acoustic fatigue " phenomenon will occur in the effect regular hour (Millisecond is to a second level), make the grey piece fragmentation on the filter bag dust stratification layer, and peel off mutually with the filter bag fiber.In addition, because the radial dimension of filter bag is much smaller than the wavelength of low-frequency sound wave, so the fluctuation of filter bag in this high strength sound field, just be similar to the fluctuation of a kind of " extension ripple " of sugarcoated haws shape, the filter bag surface will produce along the moving of axial crest of filter bag and trough, and forms filter bag " heaving " and " contraction " repeatedly.This motion mode not only has been subjected to as the shake active force of trembling cloth bag the dust stratification layer on the filter bag, but also is subjected to a kind of alternating action power of pushing and stretching that the filter bag bag gives.Under the synergy of these two kinds of active forces, fragmentation will appear in the dust stratification layer on the bag, and " being trembled " fallen.Filter bag, dust stratification layer and dust particle owing to there are differences on the physical characteristics such as composition, structure, density and tension force, under the effect of this low-frequency sound wave high strength sound field, also can produce relative displacement, make the dust stratification layer on the filter bag be easy to fragmentation and be stripped from.
For above-mentioned reasons, low-frequency sound wave is better than these two kinds of existing purge modes of pulse dust cleaning and anti-blow cleaning dust to the ash-removal effect of sack cleaner.
Simultaneously, also have the effect of " acoustic agglomerator " in the sound field of low-frequency sound wave, this effect can make dust particle phase inter coagulation and volume (being granularity) in floating increase, thereby quickens sedimentation.Phenomenon that dust behind the deashing is adsorbed once more by filter bag in infall process is eased and alleviates, also promoted the ash-removal effect of sack cleaner thus from another point of view, alleviated the live load of filter bag, made corresponding being improved of dedusting operating efficiency of deduster.
The purpose of the one end configuration pneumatic ball valve of the acoustic waveguide tube in the sound wave ashing coal gas bag-type dust remover of the present invention, mainly be to prevent that the coal gas in the deduster casing from flowing in the sonic generator by acoustic waveguide tube, this is the necessary means that ensures the sonic generator operate as normal, do not produce accidental explosion, is to guarantee that sound wave ashing coal gas bag-type dust remover of the present invention is able to a requisite measure of operate as normal.
Major advantage of the present invention is:
One, prolonged the service life of filter bag.
Sack cleaner is when adopting the low-frequency sound wave deashing, the bag surface of filter bag is rendered as " the extension ripple " of similar sugarcoated haws shape under the high sound intensity field action of low-frequency sound wave, formed a kind of shake, just as manually trembling cloth bag, the dust stratification layer on the filter bag is shaked off.In this process, the radial expansion amount of filter bag is less, the bigger power of tearing that the filter bag part is caused unlike the anti-blow cleaning dust mode, thereby also just be not easy to produce corresponding stress fatigue phenomenon, institute is so that life of bag filter can prolong one to two times at least.
Two, improve ash-removal effect and efficiency of dust collection.
Filter bag in the deduster and dust stratification layer, dust particle on it, owing to exist bigger difference at aspects such as composition, structure, density and tension force, therefore under the high-strength sound field effect of low-frequency sound wave, the three can produce relative displacement, and this just makes the dust stratification layer on the filter bag be easy to fragmentation and be stripped from.Because the diffusivity of sound wave conduction, make whole filter bags in the deduster all can realize comprehensive deashing of whole piece filter bag.And anti-blow cleaning dust mode and the pulse dust cleaning mode used at present all have more dead angle in to the filter bag ash removal process, can not remove the whole dust stratification layers on the filter bag more up hill and dale.Therefore, the low-frequency sound wave purge mode than the ash-removal effect of anti-blow cleaning dust mode and pulse dust cleaning mode all to get well many.And because the raising of ash-removal effect makes filter bag good through the filterability behind the deashing, processing contains culm tolerance and just can strengthen thereupon, and efficiency of dust collection is also just improved.Simultaneously, adopt the low-frequency sound wave purge mode because ash-removal effect is good, the filter bag load is little, efficiency of dust collection is high, thereby can carry out one time deashing every four, five hours, each deashing time only continues the several seconds, so the present invention has the advantages that the deashing gap periods is long and the deashing working time is short.And general two hours of anti-blow cleaning dust mode will deashing once, and each deashing working time is much longer.
The low-frequency sound wave deashing is compared with other purge modes, because the deashing gap periods is long, and the deashing working time is short, thereby can guarantee that deduster has the more dedusting working time, has also improved the efficiency of dust collection of deduster thus.After tested, on sack cleaner, adopt the low-frequency sound wave purge mode, can improve efficiency of dust collection 10-15% than anti-blow cleaning dust mode and pulse dust cleaning mode.
Three, reduce the integrated cost of deashing.
The sack cleaner of equipped anti-blow cleaning dust device or pulse ash remover is removed outside sack cleaner and the deashing device, also need dispose some other auxiliary equipment.As the anti-blow cleaning dust sack cleaner, also need to be provided with related facilities such as booster fan and control damper door.The pulse dust cleaning sack cleaner then will be equipped with pulse valve, the subsidiary again injector on each pulse valve that has.And the low-frequency sound wave soot cleaning system is relatively simple for structure, and all installs in that the deduster casing is outside, is easy to maintaining, and other auxiliary equipment is few.
In addition, each deashing duration of low-frequency sound wave deashing is the several seconds only, and the gap periods time of deashing is long, therefore, compare from the integrated cost of manufacturing cost, acquisition cost, use cost and maintenance cost or the like, the integrated cost than anti-blow cleaning dust sack cleaner and pulse dust cleaning sack cleaner of sound wave ashing coal gas bag-type dust remover of the present invention can reduce about 20%.
The ash-removal effect of sound wave ashing coal gas bag-type dust remover of the present invention is better than anti-blow cleaning dust sack cleaner and pulse dust cleaning sack cleaner, to the filter bag not damaged, can prolong the operation service life of filter bag and cleaner significantly, deashing device is externally installed, Automatic Control, reliable, operating cost is low, maintenance and repair is easy, to environment and body harmless.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
Sound wave ashing coal gas bag-type dust remover of the present invention, horizontal dividing plate 3 is equipped with on the top in the casing 5 of deduster, on dividing plate 3 plurality of opening is arranged, and connects filter bag 4 of lifting below each tapping, and filter bag is sagging, and the lower end can be fixed on the relevant position.The lower end of deduster casing 5 is an ash bucket, is provided with ash hole at the ash bucket lowest part, and ash-valve 8 is housed on the ash hole, and the dust that accumulates in the ash bucket can be discharged by ash-valve 8.Be provided with import 7 and outlet 2 on casing 5 sidewalls, in import 7 and outlet 2 pressure sensor be housed respectively, the holding wire of two sensors is connected to differential pressure controller 1.Sidewall at casing 5 also is provided with an opening, and at the opening part acoustic waveguide tube 10 that is tightly connected, the another port of acoustic waveguide tube 10 connects sonic generator 12 through pneumatic ball valve 11.Be connected to normally closed solenoid valve 13 on the air inlet 14 of sonic generator 12, its outside can connect the high pressure nitrogen source of the gas.In the import 7 of deduster, be connected to deduster imported valve 6.The electrical control lines of the work drive motor of sonic generator 12, differential pressure controller 1 and electric cleaner imported valve 6, pneumatic ball valve 11 and normally closed solenoid valve 13 all is connected on the controlling organization 15.Controlling organization 15 can adopt cyclelog or have the intelligence control circuit of computer chip (as single-chip microcomputer).Controlling organization 15 can be installed in the rack, constitutes switch board.
The sound wave ashing course of work of low-frequency sound wave ashing coal gas bag-type dust remover of the present invention is:
After the surface adhesion of deduster work a period of time, filter bag 4 has more dust, deduster import 7 and the differential pressure that exports between 2 increase thereupon, when this differential pressure reaches certain numerical value, differential pressure controller 1 action, to signal of telecommunication of controlling organization 15 outputs, start the deashing operation sequence, controlling organization 15 begins to control associated components according to the working procedure of setting and carries out deashing.
At first, controlling organization 15 sends the signal of telecommunication, closes deduster imported valve 6, makes dust-laden coal gas no longer enter deduster casing 5; Then starting the work drive motor of sonic generator 12, open normally closed solenoid valve 13, make pressure nitrogen gas enter sonic generator 12, carry out gas by sonic generator--sound is changed, and is modulated to the low frequency large amplitude sound wave of CF.
Then, controlling organization 15 sends the signal of telecommunication, opens pneumatic ball valve 11.This moment, the low-frequency sound wave of sonic generator 12 generations entered in the casing 5 by pneumatic ball valve 11 and acoustic waveguide tube 10, formed the high strength sound field, and all filter bags 4 are carried out sound wave ashing.The deashing time generally continues 5-20 second, and the concrete time can be adjusted according to different situations.
After the time that arrives the deashing end, controlling organization 15 sends the signal of telecommunication successively, the work drive motor of orderly close-down pneumatic ball valve 11, magnetic valve 13 and sonic generator 12, stop sound wave ashing, and after keeping a period of time, waiting for that the basic sedimentation of falling clearly of dust finishes, controlling organization 15 sends the signal of telecommunication, opens deduster imported valve 6, makes dust-laden coal gas reenter deduster.This moment, a complete deashing course of work finished, and deduster recovers normal dedusting work.
Wait for that dust settling should continue certain blanking time.If blanking time is too short, dust then after deduster recovers normal dedusting work, will make floating dust be adsorbed onto on the filter bag once more also floating, thereby influences the effect of deashing.Can consider according to multiple combined factors such as the composition of the moisture of the dust granules size in the coal gas, coal gas and dust and sinking speed this blanking time, specifically determine.
Because sound wave ashing is to carry out in the deduster that dust coal gas is filtered, so explosion-proof item is the problem that must consider.Its major measure is:
1, the work drive motor of deduster imported valve 6, pneumatic ball valve 11, normally closed solenoid valve 13 and sonic generator 12 etc. all should be to adopt the explosion-proof type structure;
2, some related components on the sonic generator 12 also will be taked explosion precaution.
The switch board of differential pressure controller 1 and controlling organization 15 is if be placed on centralized control room and away from the deduster scene, then can not take explosion precaution; If place, then also should take explosion precaution on-the-spot installation of deduster.The pressed gas that sound wave ashing uses should adopt nitrogen or other inert gases.
Low-frequency sound wave ashing coal gas bag-type dust remover of the present invention is also applicable to the dedusting of other dusty gases.
Claims (1)
1, a kind of sound wave ashing coal gas bag-type dust remover, in the casing (5) of deduster, dividing plate (3) is housed, be lifted with some filter bags (4) below the dividing plate (3), on the ash discharging hole of casing (5) bottom, ash-valve (8) is installed, in the import (7) of casing (5) sidewall and outlet (2), pressure sensor is housed respectively, the holding wire of two sensors is connected to differential pressure controller (1), it is characterized in that being provided with opening in the lower sidewall of casing (5), at the opening part acoustic waveguide tube (10) that is tightly connected, the other end of acoustic waveguide tube connects sonic generator (12) through pneumatic ball valve (11), is connected to normally closed solenoid valve (13) on the air inlet (14) of sonic generator (12); In the import (7) of deduster, be connected to deduster imported valve (6); The electrical control lines of the work drive motor of sonic generator (12), differential pressure controller (1) and deduster imported valve (6), pneumatic ball valve (11) and normally closed solenoid valve (13) all is connected on the controlling organization (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101854131A CN100558444C (en) | 2007-12-18 | 2007-12-18 | Sound wave ashing coal gas bag-type dust remover |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101854131A CN100558444C (en) | 2007-12-18 | 2007-12-18 | Sound wave ashing coal gas bag-type dust remover |
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| Publication Number | Publication Date |
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| CN101259352A true CN101259352A (en) | 2008-09-10 |
| CN100558444C CN100558444C (en) | 2009-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007101854131A Expired - Fee Related CN100558444C (en) | 2007-12-18 | 2007-12-18 | Sound wave ashing coal gas bag-type dust remover |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032018A1 (en) * | 2013-09-04 | 2015-03-12 | 江苏绿叶机械有限公司 | Compartmentalized dust remover |
| CN105436153A (en) * | 2014-08-29 | 2016-03-30 | 宝山钢铁股份有限公司 | Online ash removing method for gas pressure machine and sound wave ash remover thereof |
| CN106110768A (en) * | 2016-08-26 | 2016-11-16 | 陈美青 | Coordinated signals automatic back blow cleaner unit and the coordinated signals strategy of cleaner unit |
| CN109570154A (en) * | 2019-02-02 | 2019-04-05 | 上海通和海天材料科技有限公司 | A kind of SCR reactor deashing device peculiar to vessel and application method |
| CN110026028A (en) * | 2019-04-11 | 2019-07-19 | 浙江聚英环保科技有限公司 | A kind of collection apparatus for ash of deduster |
| CN110523172A (en) * | 2019-08-27 | 2019-12-03 | 贵州大学 | A kind of source PM2.5 particlate trap system and its tele-control system |
| CN111589237A (en) * | 2020-05-23 | 2020-08-28 | 浙江方远力鑫真空设备有限公司 | Bag type dust collector |
| CN112387020A (en) * | 2020-10-10 | 2021-02-23 | 江苏德彦环保设备有限公司 | Unpowered dust remover |
-
2007
- 2007-12-18 CN CNB2007101854131A patent/CN100558444C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015032018A1 (en) * | 2013-09-04 | 2015-03-12 | 江苏绿叶机械有限公司 | Compartmentalized dust remover |
| CN105436153A (en) * | 2014-08-29 | 2016-03-30 | 宝山钢铁股份有限公司 | Online ash removing method for gas pressure machine and sound wave ash remover thereof |
| CN106110768A (en) * | 2016-08-26 | 2016-11-16 | 陈美青 | Coordinated signals automatic back blow cleaner unit and the coordinated signals strategy of cleaner unit |
| CN109570154A (en) * | 2019-02-02 | 2019-04-05 | 上海通和海天材料科技有限公司 | A kind of SCR reactor deashing device peculiar to vessel and application method |
| CN109570154B (en) * | 2019-02-02 | 2024-03-22 | 上海通和船用设备有限公司 | Marine SCR reactor ash removal device and use method |
| CN110026028A (en) * | 2019-04-11 | 2019-07-19 | 浙江聚英环保科技有限公司 | A kind of collection apparatus for ash of deduster |
| CN110523172A (en) * | 2019-08-27 | 2019-12-03 | 贵州大学 | A kind of source PM2.5 particlate trap system and its tele-control system |
| CN111589237A (en) * | 2020-05-23 | 2020-08-28 | 浙江方远力鑫真空设备有限公司 | Bag type dust collector |
| CN112387020A (en) * | 2020-10-10 | 2021-02-23 | 江苏德彦环保设备有限公司 | Unpowered dust remover |
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| Publication number | Publication date |
|---|---|
| CN100558444C (en) | 2009-11-11 |
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Granted publication date: 20091111 Termination date: 20131218 |