CN105561788A - SCR (Selective Catalytic Reduction) catalyst module ash cleaning device - Google Patents
SCR (Selective Catalytic Reduction) catalyst module ash cleaning device Download PDFInfo
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- CN105561788A CN105561788A CN201510922125.4A CN201510922125A CN105561788A CN 105561788 A CN105561788 A CN 105561788A CN 201510922125 A CN201510922125 A CN 201510922125A CN 105561788 A CN105561788 A CN 105561788A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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Abstract
The invention belongs to the technical field of SCR (Selective Catalytic Reduction) catalyst systems, and particularly relates to an SCR catalyst module ash cleaning device, which comprises a dedusting bin, a scavenging unit arranged on the upper end in the dedusting bin, and a negative pressure dust collecting unit arranged on the bottom part of the dedusting bin, wherein the negative pressure dust collecting unit is connected with a stock bin arranged outside the dedusting bin; the stock bin and the scavenging unit are connected with a dynamic air supply system arranged outside the dedusting bin. Large-flow air scavenging is combined with negative pressure high-efficient dust collecting, so that the SCR catalyst module can be cleaned thoroughly, the cleaning wastewater output is reduced, the secondary pollution of dust accumulation on the SCR catalyst module is avoided, and the cost of regeneration engineering is reduced.
Description
Technical field
The invention belongs to SCR catalyst systems technology field, be specifically related to a kind of SCR catalyst module deashing device.
Background technology
Nitrogen oxide (NOx) is one of main component of atmosphere pollution, and the 70% direct burning coming from coal in the discharge capacity of China's nitrogen oxide, boiler smoke is one of main source of NOx emission.It is one of major tasks of China " 12 " that discharged nitrous oxides controls, and carry out the control of Industrial Nitrogen oxide contaminant, denitration becomes the binding indicator.SCR denitration regeneration has become one of important step in prevention and control, and catalyst regeneration process comprises: cleaning ash disposal, water or pickling recover acidic site, the active material several process of load again.Have a large amount of flue dust in used catalyst, SCR denitration blocks the ammonium salt formed in the granule of mainly flue dust flying dust and course of reaction, and they are deposited in the aperture of catalyst surface, hinders NOx, NH
3and O
2arrival catalyst activity surface, causes catalyst structure.Thus, in catalyst regeneration process, catalyst module surface preparation and surperficial ash disposal necessary, this link main purpose of traditional handicraft is only thought of as its follow-up active material of again implanting and creates clean surface, process means are more single, device is adopted to be high-power vacuum sweeper dust suction ash disposal, this process efficiency is low, clear up not thorough, usually, after being disposed, still a lot of at catalyst duct internal residual dust stratification, the process of ash disposal link is not in place, just the subsequent treatment process of reengineer is produced serious influence, cause the huge increasing of regeneration financial cost.
Can find out from following Fig. 6, when adopting the reengineer sequential production of existing the aspiration of negative pressure mode deashing, SCR catalyst can produce a large amount of waste water in prerinse+pressure pulse cleaning link, so a large amount of waste water is in the processing procedure of waste water, in technology, economically, all have suitable pressure for construction party or user, waste water must must process again, and relevant environment standard will be met, increase the cost of reengineer undoubtedly.Sum up through a large amount of engineering experience, as long as find that the dedusting of SCR catalyst module is clean, duct is substantially without blocking dust stratification, the useless muddy water produced when prerinse+pressure pulse cleaning can significantly decline, the pressure of wastewater treatment can reduce greatly, therefore, improve SCR catalyst module ash-removal effect to solve with the problems demand reducing waste water output.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned defect, a kind of SCR catalyst module deashing device is provided, mass flow air blows ash in conjunction with sub-pressure high-efficient dust suction, it is more thorough that SCR catalyst module is cleaned, reduce cleaning waste water output, and avoid the secondary pollution of laying dust to SCR catalyst module, reduce the cost of reengineer.
The technical scheme that the present invention solves the employing of its technical problem is as follows:
A kind of SCR catalyst module deashing device, comprise dedusting cabin, the purging unit being arranged on dedusting cabin inner upper end and the aspiration of negative pressure unit be arranged on bottom dedusting cabin, the aspiration of negative pressure unit connects the feed bin of dedusting cabin outer setting, feed bin, purge the power gas source system that unit connects dedusting cabin outer setting, mass flow air purges in the duct of SCR catalyst module top to SCR catalyst Modular surface and inside, laying dust is blown off, the dust blown off is discharged by the aspiration of negative pressure unit of bottom timely, improve effect and the efficiency of SCR catalyst module deashing, and avoid dust to cause secondary pollution to SCR catalyst module, it is thorough that laying dust is removed, be convenient to the cleaning of follow-up SCR catalyst module, and the waste water output reduced greatly in cleaning process, reduce costs.
Further, described power gas source system is made up of vacuum roots blower, air-introduced machine, air-introduced machine is connected with purging unit with pipeline, vacuum roots blower is connected with feed bin with pipeline, air-introduced machine is for purging unit air feed, and vacuum roots blower is bled and produced negative pressure and make dust be expelled to feed bin by the aspiration of negative pressure unit to collect, and dust focuses on, avoid dust to overflow, cause secondary pollution.
Further, feed bin top is provided with roof scrubber, and the air of roof scrubber to the suction of vacuum roots blower processes, and prevents roof scrubber from damaging, and avoids dust to overflow simultaneously.
Further, the Turbogrid plates of carrying SCR catalyst module are provided with bottom described dedusting cabin, dedusting cabin bottom face is protruding to dedusting cabin bottom side, and the most convex place of bottom face is dedusting cabin bottom face center, and dedusting cabin leading flank is provided with door, described the aspiration of negative pressure unit is the aspiration of negative pressure mouth, the aspiration of negative pressure mouth corresponds to dedusting cabin bottom face center, is also provided with the dirt unit that shakes bottom dedusting cabin, and bottom face is protruding to bottom side, the dust being convenient to blow off collects, and promotes the quick extraction of dust.
Further, dedusting cabin bottom face is downward tapered protrusion face or downward arc convex face.
Further, described purging unit comprises purging device, controls the translation mechanism that purging device moves horizontally and the height adjustment mechanism adjusting the vertical height of purging device, translation mechanism two ends are connected with dedusting cabin upper end inwall, height adjustment mechanism upper end is connected with translation mechanism, height adjustment mechanism bottom is connected with purging device, purging device can move in the exposure level of translation mechanism, the purging scope of purging device is made to cover SCR catalyst module, the height that height adjustment mechanism can regulate purging device to be applicable on SCR catalyst module top, improves the effect purged.
Further, described purging device longitudinal section is isosceles trapezoid, purging device dual-side tilts to the inside from top to bottom and forms the blowing mouth to canyon in purging device bottom, blowing mouth both sides are provided with rubber beams aerofoil, purging device side is provided with air inlet, the wind that air-introduced machine can be carried by the structure of purging device assembles pressurization, improve the effect purged, rubber beams aerofoil reduces blowing mouth both sides spacing further, concentrate wind bundle further, improve the wind speed at this place, breeze up, improve the effect purged further.
Further, described translation mechanism comprises the slide on slide rail, slide rail, slide rail two ends are connected with dedusting cabin upper end inwall, slide is provided with the driving mechanism driving slide to slide on slide rail, described height adjustment mechanism comprise vertically arrange on heighten plate, under heighten plate, above heighten plate top and be connected with slide, under heighten plate bottom and be connected with purging device, on heighten plate, under heighten plate and be equipped with the mounting hole cooperatively interacted, be provided with lock-screw in mounting hole.
Further, described driving mechanism comprises the transmission device of the motor be arranged on slide, motor output shaft, transmission device comprise be arranged on motor output end gear, slide rail is arranged with the tooth bar of gears meshing.
Further, the described dirt unit that shakes comprises multiple vibrator, and multiple vibrator is evenly distributed in dedusting cabin bottom face bottom side.
Beneficial effect acquired by the present invention is: adopt such scheme, SCR catalyst module is in closed dedusting cabin, the purging that its upper end is carried out back and forth with mass flow air to SCR catalyst module, laying dust in SCR catalyst Modular surface and duct is blown off to dedusting cabin, by the sucking-off of the aspiration of negative pressure mouth to feed bin, laying dust is collected, mass flow air purges in conjunction with sub-pressure high-efficient dust suction, substantially increase the ash-removal effect to SCR catalyst module, what SCR catalyst module laying dust was removed is thoroughly clean, simultaneously, the laying dust sucking-off that negative pressure will be blown off, effectively avoid laying dust to the secondary pollution of SCR catalyst module, deashing is thorough, waste water output is greatly reduced in the cleaning that SCR catalyst module is follow-up, reduce the cost of reengineer.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention will become apparent.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of dedusting cabin of the present invention;
Fig. 3 is the structural representation of translation mechanism of the present invention;
Fig. 4 is the structural representation of height adjustment mechanism of the present invention;
Fig. 5 is the structural representation of purging device of the present invention.
Fig. 6 is waste water output and wastewater treatment in the SCR catalyst reengineer using traditional dust arrester;
Fig. 7 is for using SCR catalyst reengineer waste water output of the present invention and wastewater treatment.
In accompanying drawing:
1 is dedusting cabin;
2 is feed bin, and 2.1 is roof scrubber;
3 is vacuum roots blower;
4 is air-introduced machine, and 4.1 is air supply duct;
5 is the aspiration of negative pressure mouth, and 5.1 is dust sucting pipeline;
6 is vibrator;
7 is purging device, and 7.1 is blowing mouth, 7.2 rubber beams aerofoils, 7.3 air inlets;
8 is translation mechanism, and 8.1 is slide rail, 8.2 slides, and 8.3 is motor, and 8.4 is gear, and 8.5 is tooth bar;
9 is height adjustment mechanism, 9.1 on heighten plate, 9.2 be under heighten plate, 9.3 is lock-screw.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment 1: a kind of SCR catalyst module deashing device as shown in Figure 1, comprise dedusting cabin 1, the purging unit being arranged on dedusting cabin 1 inner upper end and the aspiration of negative pressure unit be arranged on bottom dedusting cabin 1, the aspiration of negative pressure unit connects the feed bin 2 of dedusting cabin 1 outer setting, feed bin 2, purge the power gas source system that unit connects dedusting cabin 1 outer setting, power gas source system is by vacuum roots blower 3, air-introduced machine 4 is formed, air-introduced machine 4 is connected with purging unit with air supply duct 4.1, vacuum roots blower 3 is connected with feed bin 2 with air draft pipe, SCR catalyst module is placed in closed dedusting cabin 1, purge unit to purge with mass flow air in the duct of SCR catalyst module top to SCR catalyst Modular surface and inside, laying dust is being blown off and is collecting in the bottom of dedusting cabin 1, and in time dust is discharged by the aspiration of negative pressure unit, purge dedusting, the aspiration of negative pressure combines the effect and efficiency that improve SCR catalyst module deashing, and avoid dust to cause secondary pollution to SCR catalyst module, it is thorough that laying dust is removed, be convenient to the cleaning of follow-up SCR catalyst module, and the waste water output reduced greatly in cleaning process, greatly reduce costs.
As shown in Figure 2, 15-20% design is amplified by market maximum catalyst module 1.5*1.5*1.2 (L*W*H) appearance and size in the dedusting region of dedusting cabin 1, the leading flank of dedusting cabin 1 is provided with the door that activity is opened, door is provided with sealing ring, after ensureing that door is closed, dedusting cabin 1 inside is airtight space, SCR catalyst module is placed in dedusting cabin 1, the duct of SCR catalyst module keeps vertically, the bottom of dedusting cabin 1 is provided with carrying SCR catalyst Turbogrid plates 1.1, air supply duct 4.1 passes into from dedusting cabin 1 side, air supply duct 4.1 blows with the purging unit of dedusting cabin 1 inner upper end and is connected, the air of large discharge is improved for purging unit,
The purging unit of dedusting cabin 1 inner upper end is made up of purging device 7, the height adjustment mechanism 9 that controls the vertical height of translation mechanism 8 that purging device 7 moves horizontally and adjustment purging device 7, translation mechanism 8 two ends are connected with the upper end inwall of dedusting cabin 1, the upper end of height adjustment mechanism 9 is connected with translation mechanism 8, the bottom of height adjustment mechanism 9 is connected with purging device 7, purging device 7 can be controlled by translation mechanism 7 to move horizontally all around in the dedusting region of dedusting cabin 1, comprehensively to purge SCR catalyst module.In Fig. 2, the translation mechanism of the present embodiment is arranged along dedusting cabin 1 length direction, control purging device 1 and move purging along deduster 1 length direction, the length direction of purging device 1 is vertical with SCR catalyst block length direction, the length of purging device 1 is not less than the width of SCR catalyst module, concrete, translation mechanism 8 as shown in Figure 3 comprises slide rail 8.1, slide 8.2 on slide rail 8.1, the two ends of slide rail 8.1 are connected with dedusting cabin 1 upper end inwall, slide 8.2 is provided with the driving mechanism driving slide 8.2 to slide on slide rail 8.1, driving mechanism comprises the motor 8.3 be arranged on slide 8.2, motor 8.3 exports shaft drive, transmission device comprises the gear 8.4 being arranged on motor 8.3 output, the tooth bar 8.5 engaged with gear 8.4 that slide rail 8.1 is arranged, motor 8.3 is fixed on the bottom of slide 8.2 with motor cabinet, reducing gear is provided with between motor 8.3 output shaft and transmission mechanism, with the speed well making slide 8.2 slide, height adjustment mechanism 9 as shown in Figure 4 comprise vertically arrange on heighten plate 9.1, under heighten plate 9.2, on heighten plate 9.1 top and be connected with slide 8.2, under heighten plate 9.2 bottom and be connected with purging device 7, on heighten plate 9.1, under heighten plate 9.2 and be slidably matched, on heighten plate 9.1 with under heighten plate 9.2 to opposite be provided with coordinate under heighten the groove of plate 9.2, under heighten plate 9.2 and slide in groove, on heighten plate 9.1, under heighten plate 9.2 and be equipped with the mounting hole cooperatively interacted, lock-screw 9.3 is provided with in mounting hole, lock with lock-screw 9.3 after adjustment height and heighten plate 9.1, under heighten the relative position of plate 9.2, to control the height of purging device 7, the height of purging device 7 is coordinated with SCR catalyst module height, purging device 7 is suspended at above SCR catalyst module and is applicable to height, ensure that purging effect can reach maximization.
As shown in Figure 5, purging device 7 longitudinal section is in their length direction isosceles trapezoid, the two sides, front and back of purging device 7 tilt to the inside from top to bottom and form the blowing mouth 7.1 to canyon in purging device 7 bottom, both sides, blowing mouth 7.1 place are provided with relative rubber beams aerofoil 7.2, two rubber beams aerofoils 7.2 tilt to install, rubber beams aerofoil 7.2 bottom is close to each other, or rubber beams aerofoil 7.2 is arc, radian is relative, constraint direction is carried out to the air-flow flow through, improve wind speed, purging device 7 is provided with air inlet 7.3 near the side of air supply duct 4.1, intake stack 4.1 is connected with air inlet 7.3 with air supply hose, air supply hose is preferably ripple struction, be convenient to tension and compression, be convenient to purging device 7 in translation time ensure that the wind energy sent here of air supply duct 4.1 gets at and reach purging device 7, the effect ensureing air-supply and purge, the structure of purging device 7 can play the effect of bundle wind pressurization, rubber beams aerofoil 7.2 improves the effect of bundle wind pressurization further, and when regulating the height of purging device 7, rubber beams aerofoil 7.2 plays buffer protection effect, avoid regulating transition that purging device 7 and SCR catalyst module are collided, avoid damaging, the air-flow that air-introduced machine 4 blasts is after the pressurization of purging device bundle wind, the purge air quantity at blowing mouth 7.1 place is 2000-2800m
3/ h, purging pressure is 0.1-0.4MPa, the duct of SCR catalyst module is vertical, no matter the structure in SCR catalyst module duct is honeycomb fashion, flat, corrugated plate dst or other structures, duct is vertical, and the purging device 7 above SCR catalyst module blows out the mass flow air of 0.1-0.4MPa, can run through SCR catalyst module duct, the laying dust on duct and surface is blown off downwards, laying dust is collected bottom dedusting cabin 1.
As shown in Figure 2, collect for the ease of laying dust, the bottom face of dedusting cabin 1 is the crowning of the curved projection in bottom to dedusting cabin 1, the center in arc convex face is the center of dedusting cabin 1 bottom face, the aspiration of negative pressure unit is the aspiration of negative pressure mouth 5 being arranged on dedusting cabin 1 bottom face center, the aspiration of negative pressure mouth 5 connects feed bin 2 with dust sucting pipeline 5.1, the top of feed bin 2 is provided with roof scrubber 2.1, the bottom of feed bin 2 is inverted cone-shaped structure, feed bin 2 supports with support, bottom inverted cone-shaped structure is provided with material outlet, be convenient to collect laying dust, laying dust is got a proper arrangement, avoid laying dust diffuse pollution environment, roof scrubber 2.1 is connected with vacuum roots blower 3 with air draft pipe, vacuum roots blower 3 is bled generation negative pressure, maximum rate of air sucked in required controls as 2000-2800m
3/ h, the negative pressure value at the aspiration of negative pressure mouth 5 place is-300 ~-500mmHg, a Negative Pressure Dust Collecting System hour slip is less than 1%, vacuum roots blower 3 is bled negative pressure, the aspiration of negative pressure mouth 5 is made to be drawn in feed bin 2 by the dust of dedusting cabin 1 congregate by dust sucting pipeline 5.1, dust collects in feed bin 2, and packed with packaging bag by the material outlet discharge of bottom, avoid dust effusion contaminated environment, the air that roof scrubber 2.1 is pumped into vacuum roots blower 3 from feed bin 2 end carries out dust removal and filtration, ensure to enter the clean of vacuum roots blower 3 air, avoid dust to overflow simultaneously, the bottom of dedusting cabin 1 is also provided with the dirt unit that shakes, the dirt unit that shakes comprises two vibrators 6, vibrator 6 symmetry be arranged on dedusting cabin 1 two bottom sides, the vibration frequency of vibrator 6 is 60-180 time/min, upper and lower amplitude is 3-8mm, preferably, the position of vibrator 6 corresponds to 1/2nd one-sided positions of dedusting cabin 1 bottom face, dedusting cabin 1 bottom face is cambered surface, preferably, angle and this place of dedusting cabin 1 bottom face of vibrator 6 are 90 degree of angles, be arranged on 1/2nd places that bottom face is one-sided, the experience of experimentally testing and summing up in activity in production, dust collects on the conical surface of dedusting cabin 1 bottom, when laying dust is extracted out by negative pressure, still have the dust of a small amount of part can remain on cambered surface inwall, and remain in cambered surface center, vibrator 6 is arranged on this place, and be an angle of 90 degrees with this place, the vibration effect of vibrator 6 farthest can be delivered to dedusting cabin 1 bottom face, obtain maximum dirt effect of shaking, remaining dust is shaken and drops down onto the aspiration of negative pressure mouth 5, the aspiration of negative pressure unit can run-in synchronism with the dirt unit that shakes, also can asynchronously operate, purged the dust that unit blows off when ensureing the aspiration of negative pressure to be cleaned, dust is avoided to carry out secondary pollution to SCR catalyst module.This deashing device is compared and prior art, breach the aspiration of negative pressure mode that tradition is single, adopt and blow ash with mass flow air on SCR catalyst top in airtight dedusting cabin 1, SCR catalyst bottom the aspiration of negative pressure combines, dedusting cabin bottom mechanical shake dirt is assisted, be applicable to all types, specification catalyst, increase substantially the ash-removal effect of SCR catalyst, not only the laying dust on SCR catalyst surface is cleaned out, two and by clean for removing same for the laying dust in duct, the laying dust blown off is by negative pressure sucking-off timely, avoid the secondary pollution of dust to SCR catalyst, deashing is more thorough.
Be illustrated in fig. 7 shown below, comparison diagram 6, significantly, after adopting this device to remove SCR catalyst module laying dust, in prerinse+pressure pulse cleaning link, waste water output reduces greatly, and the solid black dirt that deashing technique produces is after testing containing minute quantity tungsten, vanadium nuisance, meet National Environmental solid waste discharge standard, directly can press general solid waste process, in the follow-up cleaning of SCR catalyst, reduce waste water output greatly, reduce the cost of reengineer.This device realizes efficient, the thorough ash disposal in SCR catalyst Modular surface and duct in SCR catalyst regeneration technology, for follow-up active material of again implanting creates more desirable cleaning interface, add chemism medicament contact area, effect is implanted in enhanced activity agent; Secondly, after the efficient ash disposal of catalyst surface, wash in pre-flush, in the subsequent operation such as pressure pulse cleaning, not only reduce the operating time, also considerably reduce waste water output, directly reduce wastewater treatment pressure, reduce reengineer cost; 3rd, reduce in dust collecting process process or avoid secondary pollution.
Embodiment 2: a kind of SCR catalyst module deashing device as shown in Figure 1, comprise dedusting cabin 1, the purging unit being arranged on dedusting cabin 1 inner upper end and the aspiration of negative pressure unit be arranged on bottom dedusting cabin 1, the aspiration of negative pressure unit connects the feed bin 2 of dedusting cabin 1 outer setting, feed bin 2 is connected with the vacuum roots blower 3 of air draft pipe with dedusting cabin 1 outer setting, purge unit to be then connected with dedusting cabin 1 outer setting air-introduced machine 4 with air supply duct 4.1, SCR catalyst module is placed in closed dedusting cabin 1, purge unit to purge with mass flow air in the duct of SCR catalyst module top to SCR catalyst Modular surface and inside, laying dust is being blown off and is collecting in the bottom of dedusting cabin 1, and in time dust is discharged by the aspiration of negative pressure unit, purge dedusting, the aspiration of negative pressure combines the effect and efficiency that improve SCR catalyst module deashing, and avoid dust to cause secondary pollution to SCR catalyst module, it is thorough that laying dust is removed, be convenient to the cleaning of follow-up SCR catalyst module, and the waste water output reduced greatly in cleaning process, greatly reduce costs.
As shown in Figure 2, 15-20% design is amplified by market maximum catalyst module 1.5*1.5*1.2 (L*W*H) appearance and size in the dedusting region of dedusting cabin 1, the leading flank of dedusting cabin 1 is provided with the door that activity is opened, door is provided with sealing ring, after ensureing that door is closed, dedusting cabin 1 inside is airtight space, SCR catalyst module is placed in dedusting cabin 1, the duct of SCR catalyst module keeps vertically, the bottom of dedusting cabin 1 is provided with carrying SCR catalyst Turbogrid plates 1.1, air supply duct 4.1 passes into from dedusting cabin 1 side, air supply duct 4.1 blows with the purging unit of dedusting cabin 1 inner upper end and is connected, the air of large discharge is improved for purging unit,
The purging unit of dedusting cabin 1 inner upper end is made up of purging device 7, the height adjustment mechanism 9 that controls the vertical height of translation mechanism 8 that purging device 7 moves horizontally and adjustment purging device 7, translation mechanism 8 two ends are connected with the upper end inwall of dedusting cabin 1, the upper end of height adjustment mechanism 9 is connected with translation mechanism 8, the bottom of height adjustment mechanism 9 is connected with purging device 7, purging device 7 can be controlled by translation mechanism 7 to move horizontally all around in the dedusting region of dedusting cabin 1, comprehensively to purge SCR catalyst module.Translation mechanism 8 as shown in Figure 3 comprises slide rail 8.1, slide 8.2 on slide rail 8.1, the two ends of slide rail 8.1 are connected with dedusting cabin 1 upper end inwall, slide 8.2 is provided with the driving mechanism driving slide 8.2 to slide on slide rail 8.1, driving mechanism comprises the motor 8.3 be arranged on slide 8.2, the roller of motor 8.3 output, slide rail 8.1 is provided with the track coordinating roller, motor 8.3 is fixed on the bottom of slide 8.2 with motor cabinet, reducing gear is provided with between motor 8.3 output shaft and roller, with the speed well making slide 8.2 slide, height adjustment mechanism 9 is Pneumatic extension bar, the height regulating purging device 7 is convenient in pneumatic control, the height of purging device 7 is coordinated with SCR catalyst module height, purging device 7 is suspended at above SCR catalyst module and is applicable to height, ensure that purging effect can reach maximization.
As shown in Figure 5, purging device 7 longitudinal section is in their length direction isosceles trapezoid, the two sides, front and back of purging device 7 tilt to the inside from top to bottom and form the blowing mouth 7.1 to canyon in purging device 7 bottom, both sides, blowing mouth 7.1 place are provided with relative rubber beams aerofoil 7.2, two rubber beams aerofoils 7.2 tilt to install, rubber beams aerofoil 7.2 bottom is close to each other, or rubber beams aerofoil 7.2 is arc, radian is relative, constraint direction is carried out to the air-flow flow through, improve wind speed, purging device 7 is provided with air inlet 7.3 near the side of air supply duct 4.1, intake stack 4.1 is connected with air inlet 7.3 with air supply hose, air supply hose is preferably ripple struction, be convenient to tension and compression, be convenient to purging device 7 in translation time ensure that the wind energy sent here of air supply duct 4.1 gets at and reach purging device 7, the effect ensureing air-supply and purge, the structure of purging device 7 can play the effect of bundle wind pressurization, rubber beams aerofoil 7.2 improves the effect of bundle wind pressurization further, and when regulating the height of purging device 7, rubber beams aerofoil 7.2 plays buffer protection effect, avoid regulating transition that purging device 7 and SCR catalyst module are collided, avoid damaging, the air-flow that air-introduced machine 4 blasts is after the pressurization of purging device bundle wind, the purge air quantity at blowing mouth 7.1 place is 2000-2800m
3/ h, purging pressure is 0.1-0.4MPa, the duct of SCR catalyst module is vertical, structure regardless of SCR catalyst module duct is honeycomb fashion, flat, corrugated plate dst or other structures, duct is vertical, purging device 7 above SCR catalyst module blows out the mass flow air of 0.1-0.4MPa, SCR catalyst module duct can be run through, the laying dust on duct and surface is blown off downwards, laying dust is collected bottom dedusting cabin 1, in order to strengthen the effect purging deashing, laying dust in SCR catalyst module duct is more thoroughly removed, purging device 7 place is provided with downward acoustic wave ash ejector, acoustic wave ash ejector auxiliary air blows the black dirt that ash peels off bonding further.
As shown in Figure 2, collect for the ease of laying dust, the bottom face of dedusting cabin 1 is the crowning of the tapered projection in bottom to dedusting cabin 1, the center in tapered protrusion face is the center of dedusting cabin 1 bottom face, the aspiration of negative pressure unit is the aspiration of negative pressure mouth 5 being arranged on dedusting cabin 1 bottom face center, the aspiration of negative pressure mouth 5 connects feed bin 2 with dust sucting pipeline 5.1, the top of feed bin 2 is provided with roof scrubber 2.1, the bottom of feed bin 2 is inverted cone-shaped structure, feed bin 2 supports with support, bottom inverted cone-shaped structure is provided with material outlet, be convenient to collect laying dust, laying dust is got a proper arrangement, avoid laying dust diffuse pollution environment, roof scrubber 2.1 is connected with vacuum roots blower 3 with air draft pipe, vacuum roots blower 3 is bled generation negative pressure, maximum rate of air sucked in required controls as 2000-2800m
3/ h, the negative pressure value at the aspiration of negative pressure mouth 5 place is-300 ~-500mmHg, a Negative Pressure Dust Collecting System hour slip is less than 1%, vacuum roots blower 3 is bled negative pressure, the aspiration of negative pressure mouth 5 is made to be drawn in feed bin 2 by the dust of dedusting cabin 1 congregate by dust sucting pipeline 5.1, dust collects in feed bin 2, and packed with packaging bag by the material outlet discharge of bottom, avoid dust effusion contaminated environment, the air that roof scrubber 2.1 is pumped into vacuum roots blower 3 from feed bin 2 end carries out dust removal and filtration, ensure to enter the clean of vacuum roots blower 3 air, avoid dust to overflow simultaneously, the bottom of dedusting cabin 1 is also provided with the dirt unit that shakes, the dirt unit that shakes comprises four vibrators 6, four vibrators 6 are arranged on bottom dedusting cabin 1 uniformly, the vibration frequency of vibrator 6 is 60-180 time/min, upper and lower amplitude is 3-8mm, preferably, the position of vibrator 6 corresponds to 1/2nd one-sided positions of dedusting cabin 1 bottom face, dedusting cabin 1 bottom face is the conical surface, preferably, angle and this place of dedusting cabin 1 bottom face of vibrator 6 are 90 degree of angles, be arranged on 1/2nd places that bottom face is one-sided, the experience of experimentally testing and summing up in activity in production, dust collects on the conical surface of dedusting cabin 1 bottom, when laying dust is extracted out by negative pressure, still have the dust of a small amount of part can remain on conical surface inwall, and remain in conical surface center, vibrator 6 is arranged on this place, and be an angle of 90 degrees with this place, the vibration effect of vibrator 6 farthest can be delivered to dedusting cabin 1 bottom face, obtain maximum dirt effect of shaking, remaining dust is shaken and drops down onto the aspiration of negative pressure mouth 5, the aspiration of negative pressure unit can run-in synchronism with the dirt unit that shakes, also can asynchronously operate, purged the dust that unit blows off when ensureing the aspiration of negative pressure to be cleaned, dust is avoided to carry out secondary pollution to SCR catalyst module.This deashing device is compared and prior art, breach the aspiration of negative pressure mode that tradition is single, adopt and blow ash with mass flow air on SCR catalyst top in airtight dedusting cabin 1, SCR catalyst bottom the aspiration of negative pressure combines, dedusting cabin bottom mechanical shake dirt is assisted, be applicable to all types, specification catalyst, increase substantially the ash-removal effect of SCR catalyst, not only the laying dust on SCR catalyst surface is cleaned out, two and by clean for removing same for the laying dust in duct, the laying dust blown off is by negative pressure sucking-off timely, avoid the secondary pollution of dust to SCR catalyst, deashing is more thorough, waste water output is reduced greatly in the follow-up cleaning of SCR catalyst, reduce the cost of reengineer.
Embodiment 3: a kind of SCR catalyst module deashing device as shown in Figure 1, comprise dedusting cabin 1, the purging unit being arranged on dedusting cabin 1 inner upper end and the aspiration of negative pressure unit be arranged on bottom dedusting cabin 1, the aspiration of negative pressure unit connects the feed bin 2 of dedusting cabin 1 outer setting, the outside of dedusting cabin 1 is provided with vacuum roots blower 3, the top of feed bin 2 is provided with roof scrubber 2.1, roof scrubber 2.1 is connected with the suction opeing of air draft pipe with vacuum roots blower 3, feed bin 2 connects the aspiration of negative pressure unit with dust sucting pipeline 5.1, purge unit to be then connected with the air outlet of air supply duct 4.1 with vacuum roots blower 3, vacuum roots blower 3, feed bin 2, the closed circuit circulatory system is formed between dedusting cabin 1, in order to ensure the normal operation of vacuum roots blower 3, vacuum roots blower 3 place is provided with the automatic temperature control equipment making vacuum roots blower 3 keep constant temperature, automatic temperature control equipment can also impel closed circuit circulatory system temperature, simultaneously, in order to ensure that large discharge purges, effectively carrying out of the aspiration of negative pressure, air-supply end adds air-introduced machine, to ensure the effect that large discharge purges, and the reliable of the aspiration of negative pressure effectively realizes.SCR catalyst module is placed in closed dedusting cabin 1, purge unit to purge with mass flow air in the duct of SCR catalyst module top to SCR catalyst Modular surface and inside, laying dust is being blown off and is collecting in the bottom of dedusting cabin 1, and in time dust is discharged by the aspiration of negative pressure unit, purge dedusting, the aspiration of negative pressure combines the effect and efficiency that improve SCR catalyst module deashing, and avoid dust to cause secondary pollution to SCR catalyst module, it is thorough that laying dust is removed, be convenient to the cleaning of follow-up SCR catalyst module, and the waste water output reduced greatly in cleaning process, greatly reduce costs.
As shown in Figure 2, 15-20% design is amplified by market maximum catalyst module 1.5*1.5*1.2 (L*W*H) appearance and size in the dedusting region of dedusting cabin 1, the leading flank of dedusting cabin 1 is provided with the door that activity is opened, door is provided with sealing ring, after ensureing that door is closed, dedusting cabin 1 inside is airtight space, SCR catalyst module is placed in dedusting cabin 1, the duct of SCR catalyst module keeps vertically, the bottom of dedusting cabin 1 is provided with carrying SCR catalyst Turbogrid plates 1.1, air supply duct 4.1 passes into from dedusting cabin 1 side, air supply duct 4.1 blows with the purging unit of dedusting cabin 1 inner upper end and is connected, the air of large discharge is improved for purging unit,
The purging unit of dedusting cabin 1 inner upper end is made up of purging device 7, the height adjustment mechanism 9 that controls the vertical height of translation mechanism 8 that purging device 7 moves horizontally and adjustment purging device 7, translation mechanism 8 two ends are connected with the upper end inwall of dedusting cabin 1, the upper end of height adjustment mechanism 9 is connected with translation mechanism 8, the bottom of height adjustment mechanism 9 is connected with purging device 7, purging device 7 can be controlled by translation mechanism 7 to move horizontally all around in the dedusting region of dedusting cabin 1, comprehensively to purge SCR catalyst module.In Fig. 2, the translation mechanism of the present embodiment is arranged along dedusting cabin 1 length direction, control purging device 1 and move purging along deduster 1 length direction, the length direction of purging device 1 is vertical with SCR catalyst block length direction, the length of purging device 1 is not less than the width of SCR catalyst module, concrete, translation mechanism 8 as shown in Figure 3 comprises slide rail 8.1, slide 8.2 on slide rail 8.1, the two ends of slide rail 8.1 are connected with dedusting cabin 1 upper end inwall, slide 8.2 is provided with the driving mechanism driving slide 8.2 to slide on slide rail 8.1, driving mechanism comprises the motor 8.3 be arranged on slide 8.2, motor 8.3 exports shaft drive, transmission device comprises the gear 8.4 being arranged on motor 8.3 output, the tooth bar 8.5 engaged with gear 8.4 that slide rail 8.1 is arranged, motor 8.3 is fixed on the bottom of slide 8.2 with motor cabinet, reducing gear is provided with between motor 8.3 output shaft and transmission mechanism, with the speed well making slide 8.2 slide, height adjustment mechanism 9 as shown in Figure 4 comprise vertically arrange on heighten plate 9.1, under heighten plate 9.2, on heighten plate 9.1 top and be connected with slide 8.2, under heighten plate 9.2 bottom and be connected with purging device 7, on heighten plate 9.1, under heighten plate 9.2 and be slidably matched, on heighten plate 9.1 with under heighten plate 9.2 to opposite be provided with coordinate under heighten the groove of plate 9.2, under heighten plate 9.2 and slide in groove, on heighten plate 9.1, under heighten plate 9.2 and be equipped with the mounting hole cooperatively interacted, lock-screw 9.3 is provided with in mounting hole, lock with lock-screw 9.3 after adjustment height and heighten plate 9.1, under heighten the relative position of plate 9.2, to control the height of purging device 7, the height of purging device 7 is coordinated with SCR catalyst module height, purging device 7 is suspended at above SCR catalyst module and is applicable to height, ensure that purging effect can reach maximization.
As shown in Figure 5, purging device 7 longitudinal section is in their length direction isosceles trapezoid, the two sides, front and back of purging device 7 tilt to the inside from top to bottom and form the blowing mouth 7.1 to canyon in purging device 7 bottom, both sides, blowing mouth 7.1 place are provided with relative rubber beams aerofoil 7.2, two rubber beams aerofoils 7.2 tilt to install, rubber beams aerofoil 7.2 bottom is close to each other, or rubber beams aerofoil 7.2 is arc, radian is relative, constraint direction is carried out to the air-flow flow through, improve wind speed, purging device 7 is provided with air inlet 7.3 near the side of air supply duct 4.1, intake stack 4.1 is connected with air inlet 7.3 with air supply hose, air supply hose is preferably ripple struction, be convenient to tension and compression, be convenient to purging device 7 in translation time ensure that the wind energy sent here of air supply duct 4.1 gets at and reach purging device 7, the effect ensureing air-supply and purge, the structure of purging device 7 can play the effect of bundle wind pressurization, rubber beams aerofoil 7.2 improves the effect of bundle wind pressurization further, and when regulating the height of purging device 7, rubber beams aerofoil 7.2 plays buffer protection effect, avoid regulating transition that purging device 7 and SCR catalyst module are collided, avoid damaging, the air-flow that air-introduced machine 4 blasts is after the pressurization of purging device bundle wind, the purge air quantity at blowing mouth 7.1 place is 2000-2800m
3/ h, purging pressure is 0.1-0.4MPa, the duct of SCR catalyst module is vertical, no matter the structure in SCR catalyst module duct is honeycomb fashion, flat, corrugated plate dst or other structures, duct is vertical, and the purging device 7 above SCR catalyst module blows out the mass flow air of 0.1-0.4MPa, can run through SCR catalyst module duct, the laying dust on duct and surface is blown off downwards, laying dust is collected bottom dedusting cabin 1.
As shown in Figure 2, collect for the ease of laying dust, the bottom face of dedusting cabin 1 is the crowning of the tapered projection in bottom to dedusting cabin 1, the center in tapered protrusion face is the center of dedusting cabin 1 bottom face, the aspiration of negative pressure unit is the aspiration of negative pressure mouth 5 being arranged on dedusting cabin 1 bottom face center, the aspiration of negative pressure mouth 5 connects feed bin 2 with dust sucting pipeline 5.1, the top of feed bin 2 is provided with roof scrubber 2.1, the bottom of feed bin 2 is inverted cone-shaped structure, feed bin 2 supports with support, bottom inverted cone-shaped structure is provided with material outlet, be convenient to collect laying dust, laying dust is got a proper arrangement, avoid laying dust diffuse pollution environment, roof scrubber 2.1 is connected with vacuum roots blower 3 with air draft pipe, vacuum roots blower 3 is bled generation negative pressure, maximum rate of air sucked in required controls as 2000-2800m
3/ h, the negative pressure value at the aspiration of negative pressure mouth 5 place is-300 ~-500mmHg, a Negative Pressure Dust Collecting System hour slip is less than 1%, vacuum roots blower 3 is bled negative pressure, the aspiration of negative pressure mouth 5 is made to be drawn in feed bin 2 by the dust of dedusting cabin 1 congregate by dust sucting pipeline 5.1, dust collects in feed bin 2, and packed with packaging bag by the material outlet discharge of bottom, avoid dust effusion contaminated environment, the air that roof scrubber 2.1 is pumped into vacuum roots blower 3 from feed bin 2 end carries out dust removal and filtration, ensure to enter the clean of vacuum roots blower 3 air, avoid dust to overflow simultaneously, the bottom of dedusting cabin 1 is also provided with the dirt unit that shakes, the dirt unit that shakes comprises two vibrators 6, vibrator 6 symmetry be arranged on dedusting cabin 1 two bottom sides, preferably, the position of vibrator 6 corresponds to 1/2nd one-sided positions of dedusting cabin 1 bottom face, dedusting cabin 1 bottom face is the conical surface, preferably, angle and this place of dedusting cabin 1 bottom face of vibrator 6 are 90 degree of angles, be arranged on 1/2nd places that bottom face is one-sided, the experience of experimentally testing and summing up in activity in production, dust collects on the conical surface of dedusting cabin 1 bottom, when laying dust is extracted out by negative pressure, still have the dust of a small amount of part can remain on conical surface inwall, and remain in conical surface center, vibrator 6 is arranged on this place, and be an angle of 90 degrees with this place, the vibration frequency of vibrator 6 is 60-180 time/min, upper and lower amplitude is 3-8mm, the vibration effect of vibrator 6 farthest can be delivered to dedusting cabin 1 bottom face, obtain maximum dirt effect of shaking, remaining dust is shaken and drops down onto the aspiration of negative pressure mouth 5, the aspiration of negative pressure unit can run-in synchronism with the dirt unit that shakes, also can asynchronously operate, purged the dust that unit blows off when ensureing the aspiration of negative pressure to be cleaned, dust is avoided to carry out secondary pollution to SCR catalyst module.This deashing device is compared and prior art, breach the aspiration of negative pressure mode that tradition is single, adopt and blow ash with mass flow air on SCR catalyst top in airtight dedusting cabin 1, SCR catalyst bottom the aspiration of negative pressure combines, dedusting cabin bottom mechanical shake dirt is assisted, dedusting cabin 1, feed bin 2, closed circuit circulatory system between vacuum roots blower 3, more energy-conservation, be applicable to all types, specification catalyst, increase substantially the ash-removal effect of SCR catalyst, not only the laying dust on SCR catalyst surface is cleaned out, two and by clean for removing same for the laying dust in duct, the laying dust blown off is by negative pressure sucking-off timely, avoid the secondary pollution of dust to SCR catalyst, deashing is more thorough, waste water output is reduced greatly in the follow-up cleaning of SCR catalyst, reduce the cost of reengineer.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a SCR catalyst module deashing device, it is characterized in that: comprise dedusting cabin, be arranged on the purging unit of dedusting cabin inner upper end and be arranged on the aspiration of negative pressure unit bottom dedusting cabin, the aspiration of negative pressure unit connects the feed bin of dedusting cabin outer setting, and feed bin, purging unit connect the power gas source system of dedusting cabin outer setting.
2. a kind of SCR catalyst module deashing device according to claim 1, it is characterized in that: described power gas source system is made up of vacuum roots blower, air-introduced machine, air-introduced machine is connected with purging unit with pipeline, and vacuum roots blower is connected with feed bin with pipeline.
3. a kind of SCR catalyst module deashing device according to claim 1, is characterized in that: feed bin top is provided with roof scrubber.
4. a kind of SCR catalyst module deashing device according to claim 1, it is characterized in that: the Turbogrid plates being provided with carrying SCR catalyst module bottom described dedusting cabin, dedusting cabin bottom face is protruding to dedusting cabin bottom side, the most convex place of bottom face is dedusting cabin bottom face center, dedusting cabin leading flank is provided with door, described the aspiration of negative pressure unit is the aspiration of negative pressure mouth, and the aspiration of negative pressure mouth corresponds to dedusting cabin bottom face center, is also provided with the dirt unit that shakes bottom dedusting cabin.
5. a kind of SCR catalyst module deashing device according to claim 4, is characterized in that: dedusting cabin bottom face is downward tapered protrusion face or downward arc convex face.
6. a kind of SCR catalyst module deashing device according to claim 1, it is characterized in that: described purging unit comprises purging device, controls the translation mechanism that purging device moves horizontally and the height adjustment mechanism adjusting the vertical height of purging device, translation mechanism two ends are connected with dedusting cabin upper end inwall, height adjustment mechanism upper end is connected with translation mechanism, and height adjustment mechanism bottom is connected with purging device.
7. a kind of SCR catalyst module deashing device according to claim 6, it is characterized in that: described purging device longitudinal section is isosceles trapezoid, purging device dual-side tilts to the inside from top to bottom and forms the blowing mouth to canyon in purging device bottom, blowing mouth both sides are provided with rubber beams aerofoil, and purging device side is provided with air inlet.
8. a kind of SCR catalyst module deashing device according to claim 6, it is characterized in that: described translation mechanism comprises the slide on slide rail, slide rail, slide rail two ends are connected with dedusting cabin upper end inwall, slide is provided with the driving mechanism driving slide to slide on slide rail, described height adjustment mechanism comprise vertically arrange on heighten plate, under heighten plate, on heighten plate top and be connected with slide, under heighten plate bottom and be connected with purging device, on heighten plate, under heighten plate and be equipped with the mounting hole cooperatively interacted, be provided with lock-screw in mounting hole.
9. a kind of SCR catalyst module deashing device according to claim 8, it is characterized in that: described driving mechanism comprises the transmission device of the motor be arranged on slide, motor output shaft, transmission device comprise be arranged on motor output end gear, slide rail is arranged with the tooth bar of gears meshing.
10. a kind of SCR catalyst module deashing device according to claim 4, is characterized in that: the described dirt unit that shakes comprises multiple vibrator, and multiple vibrator is evenly distributed in dedusting cabin bottom face bottom side.
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| CN113440966A (en) * | 2021-07-26 | 2021-09-28 | 广东吉康环境系统科技有限公司 | Automatic bottom dedusting system and method for sludge low-temperature drying equipment |
| CN114351085A (en) * | 2021-12-30 | 2022-04-15 | 苏州吉恒纳米科技有限公司 | Heat treatment blowing equipment before vacuum coating |
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| CN114904590A (en) * | 2022-05-05 | 2022-08-16 | 安徽工程大学 | Honeycomb type SCR catalyst repairing device and splicing repairing method |
| CN114904590B (en) * | 2022-05-05 | 2023-09-22 | 安徽工程大学 | Honeycomb SCR catalyst repairing device and splicing repairing method |
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