CN105381716B - A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method - Google Patents

A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method Download PDF

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Publication number
CN105381716B
CN105381716B CN201510943164.2A CN201510943164A CN105381716B CN 105381716 B CN105381716 B CN 105381716B CN 201510943164 A CN201510943164 A CN 201510943164A CN 105381716 B CN105381716 B CN 105381716B
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Prior art keywords
catalyst
ultrasonic
cleaning
main body
scr denitration
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CN105381716A (en
Inventor
杨广华
王洪明
黄丽明
余立清
赖永花
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Longyan Cercis Innovation Research Institute
Fujian Cercis Environment Project Co Ltd
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Longyan Cercis Innovation Research Institute
Fujian Cercis Environment Project Co Ltd
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
    • B01J38/60—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using acids
    • 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
    • B01D53/565—Nitrogen oxides by treating the gases with solids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/06—Washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J38/00—Regeneration or reactivation of catalysts, in general
    • B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
    • B01J38/64—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using alkaline material; using salts
    • B01J38/66—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using alkaline material; using salts using ammonia or derivatives thereof

Abstract

The present invention relates to a kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method, the activation device includes regeneration main body case, ultrasonic ultrasonic delay line memory, catalyst rotary turnplate and tiny structure aspirator；The regenerative system includes blow device, cleaning device, the first drying device and the above-mentioned activation device being sequentially connected.The present invention can realize the regeneration of decaying catalyst, and compared with general regeneration technology, this technique soot blowing is more thorough, and cleaning is more complete, while the utilization rate of cleaning fluid and regenerated liquid can also be greatly improved, and farthest recover surface and the pore structure of decaying catalyst.

Description

A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and Corresponding method
Technical field
The invention belongs to catalyst regeneration techniques field, and in particular to a kind of blow device of inactivation SCR denitration catalyst, Activate device and regenerative system and corresponding method.
Background technology
The industrialized environmental problem getting worse such as deterioration, haze that environment is also exacerbated while develop rapidly, with " 12 " plan the implementation of emission reduction tasks, and national discharged nitrous oxides standard is stricter, accelerates the development of denitration technology. Due to SCR (Selective catalytic reduction, SCR) denitration technology mature and reliable, therefore SCR Denitration technology is always in occupation of the very big market share, but catalyst cost therein is too high, and general commercial catalysts make Be 3-5 with the life-span, if directly more catalyst changeout will greatly increase its denitration cost, with caused waste catalyst due to Environment is polluted into branch containing heavy metal etc., therefore the regeneration issues for studying SCR denitration are significant.
SCR denitration in the process of running, due to reasons such as surface area reduction, the passage of activating agent and poisonings, is urged Agent activity gradually reduces, and when its activity reduces to a certain extent, when can not meet the needs of SCR denitration system, we claim Be " inactivation SCR denitration catalyst ", when this inactivation can not reduce, we term it " discarded SCR denitration ".
Catalyst regeneration is its activity is obtained certain journey using certain technological means for inactivation SCR denitration catalyst The recovery of degree.With the amount of the putting into operation increase of SCR denitration system, the increase of SCR denitration dosage, its regeneration requirements is also increasingly Greatly, SCR denitration regeneration market, the domestic annual catalyst regeneration ten thousand stere of market about 20 or so have been gradually formed.From From the point of view of reducing SCR denitration system operating cost and reducing the discarded aspect of SCR denitration solid waste two, it is required to greatly develop The regeneration industry of SCR denitration.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of very high mistake of regeneration efficiency of economizing type The blow device of SCR denitration living, activate device and regenerative system and corresponding method.
To achieve these goals, the present invention provides following technical scheme：
A kind of blow device of inactivation SCR denitration catalyst, the blow device include purging main body case, air compressor machine, rotation Air blown device, shock wave soot blower and shock wave soot blower control device；The rotary air blowing device is positioned at purging main body Top inside case, and be connected by pipeline with the air compressor machine outside purging main body case；The shock wave soot blower is used for clear Except the dust stratification of inactivation SCR denitration catalyst, the both sides inside purging main body case, the shock wave soot blower passes through shock-wave ash blowing Device control device is controlled, and the shock wave soot blower is connected also by pipeline with above-mentioned air compressor machine.
Wherein, the shock wave soot blower is n, and n is more than or equal to 1, and the n shock wave soot blower passes through pipeline respectively P1 ..., Pn be connected with a total pipeline P0, the pipeline P1 ..., be respectively arranged with a valve on Pn and (be, for example, Air inlet stop valve), the shock wave soot blower is connected by the total pipeline P0 with described air compressor machine；The shock wave soot blower leads to Same shock wave soot blower control device control is crossed, every shock wave soot blower is pressed by the different controls on the control device Button, which is realized, to be started, and carries out shock-wave ash blowing.
Wherein, the quantity n of the shock wave soot blower can determine according to actual conditions, such as 2-8, preferably 4-6.It is preferred that , the shock wave soot blower is set as four, the on both sides of the middle being separately positioned on inside purging main body case and top both sides.
Wherein, persevering airflow apparatus is set on the pipeline that rotary air blowing device is connected with air compressor machine.Preferably, also It is provided with stop valve, air inlet adjustment valve and pressure gauge.
Wherein, the bottom inside the purging main body case is provided with flue-dust retainer, is set in the bottom half of purging main body case There is the ash hole being connected with the flue-dust retainer.The inactivation SCR denitration catalyst is placed in the collection ash by netted steel construction Bucket top, the surface dirt of the inactivation SCR denitration catalyst are automatically fallen into flue-dust retainer after purging.
Wherein, during work, start air compressor machine, open into the air inlet stop valve on the pipeline of shock wave soot blower, work as shock wave After the pressure value of the pressure gauge of soot blower control device reaches suitable pressure value (such as 0.8-1.2MPa), pass through shock-wave ash blowing Device control device starts shock wave soot blower and purges the inactivation SCR denitration catalyst；After shock-wave ash blowing terminates, pass through shock-wave ash blowing Device control device closes shock wave soot blower, simultaneously closes off the air inlet stop valve of shock wave soot blower.Open rotary air blowing device Air inlet adjustment valve, with air compressor machine adjust pressure to (such as 0.4-0.6MPa) after suitable pressure value, be blown by rotary air Device purges the inactivation SCR denitration catalyst, and flying dust is collected into flue-dust retainer, and can be discharged by ash hole.
The present invention also provides following technical scheme：
A kind of blowing method of inactivation SCR denitration catalyst, it uses above-mentioned blow device, and the blowing method includes Following steps：
Inactivation SCR denitration catalyst is placed in blow device (such as the inactivation SCR denitration catalyst passes through net-shaped steel Structure is placed in the flue-dust retainer top), start air compressor machine, open into the air inlet stop valve on the pipeline of shock wave soot blower, adjust The pressure of shock wave soot blower is saved to (such as 0.8-1.2MPa) after suitable pressure value, is started by shock wave soot blower control device Shock wave soot blower purges the inactivation SCR denitration catalyst；After shock-wave ash blowing terminates, shock wave soot blower is closed, is simultaneously closed off sharp The air inlet stop valve of ripple soot blower；The air inlet adjustment valve of rotary air blowing device is opened, is sprayed with air compressor machine regulation rotary air The pressure of blowing apparatus passes through rotary air blowing device and purges the inactivation to (such as 0.4-0.6MPa) after suitable pressure value SCR denitration, flying dust are collected into flue-dust retainer, and are discharged by ash hole.
Wherein, if four shock wave soot blowers, then shock wave soot blower is started by shock wave soot blower control device and purges institute The step of stating inactivation SCR denitration catalyst be specifically：First start the soot blower of on both sides of the middle by shock wave soot blower control device Purging 2-5 times, the shock wave soot blower for restarting top both sides purge 3-5 times.
Wherein, it is described that the inactivation SCR denitration catalyst 5-10min is purged by rotary air blowing device.
The present invention also provides following technical scheme：
A kind of activation device of inactivation SCR denitration catalyst, the activation device include regeneration main body case, ultrasonic atomization Device, catalyst rotary turnplate and tiny structure aspirator, ultrasonic ultrasonic delay line memory and catalyst rotary turnplate are arranged on regeneration main body The box house of case, tiny structure aspirator are arranged on the casing of regeneration main body case, and wherein ultrasonic ultrasonic delay line memory is arranged on again The top of raw main body case box house, ultrasonic ultrasonic delay line memory lower section are provided with ultrasonic atomizatio nozzle for liquid；Catalyst rotary turnplate position Below ultrasonic atomizatio nozzle for liquid；The casing side of regeneration main body case is provided with regeneration liquid waste outlet.
Further, during work, inactivation SCR denitration catalyst to be activated is placed in above catalyst rotary turnplate, in horse Catalyst rotary turnplate drives the catalyst to rotate under the driving reached.
Further, the tiny structure aspirator is internally formed tiny structure environment in regeneration main body case；Ultrasonic fog Change device under tiny structure environment by ultrasonic wave of the ultrasonic atomizatio nozzle for liquid to catalyst sprinkling using clean air as carrier gas The micron order mist particles regeneration activity liquid of atomization, with catalyst described in semidry method regeneration activating.
Wherein, the regeneration activity liquid is by bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, work Property component auxiliary agent, acid and deionized water composition.It is formulated and dosage can configure according to actual conditions.Wherein, bleeding agent is selected from and oozed Saturating agent JFC；Surfactant is selected from OP-10；Complexing agent is selected from polyvinyl alcohol or triethanolamine；Active component auxiliary agent is selected from secondary tungsten Sour ammonium；Acid is the one or more in oxalic acid, acetic acid or carbonic acid.
The present invention further provides following technical scheme：
A kind of activation method of inactivation SCR denitration catalyst, it uses above-mentioned activation device, and its processing step includes： Inactivation SCR denitration catalyst to be activated is placed in above the catalyst rotary turnplate of the activation device, in tiny structure environment The lower ultrasonic fog sprayed with ultrasonic ultrasonic delay line memory by ultrasonic atomizatio nozzle for liquid to the catalyst using clean air as carrier gas The micron order mist particles regeneration activity liquid of change, with catalyst described in semidry method regeneration activating.
Further, the time of regeneration activating is 1-5h, preferably 2-3h.Specifically, the semidry method regeneration activating is： The tiny structure aspirator is internally formed tiny structure environment in regeneration main body case；Ultrasonic ultrasonic delay line memory under tiny structure environment, Sprayed by ultrasonic atomizatio nozzle for liquid to the catalyst using clean air as vaporific of the micron order of the ultrasonic atomization of carrier gas Grain regeneration activity liquid, activates 10-50min, and the wherein condensation rate of ultrasonic ultrasonic delay line memory is 0.05L/min-1L/min, flow rate of carrier gas For 0.1m3/h-5m3/ h, ultrasonic ultrasonic delay line memory frequency are 1.0MHz-4.5MHz.
The present invention further provides following technical scheme：
A kind of regenerative system of inactivation SCR denitration catalyst is blow device that the regenerative system includes being sequentially connected, clear Cleaning device, the first drying device and activation device, wherein blow device purge to inactivation SCR denitration catalyst；Cleaning dress Put and the catalyst after blow device purges is cleaned；First drying device is to the catalysis after the cleaning of cleaned device Agent is dried；The activation device carries out regeneration activating processing to dried catalyst；
Wherein, the blow device is above-mentioned blow device.
The present invention further provides following technical scheme：
A kind of renovation process of inactivation SCR denitration catalyst, it uses the regeneration system of above-mentioned inactivation SCR denitration catalyst System, this method comprise the following steps：
(1) inactivation SCR denitration catalyst is placed in blow device (such as the inactivation SCR denitration catalyst passes through net Shape steel construction is placed in the flue-dust retainer top) and carry out following steps：Start air compressor machine, open the pipeline into shock wave soot blower On air inlet stop valve, adjust the pressure of shock wave soot blower to (such as 0.8-1.2MPa) after suitable pressure value, pass through shock wave Soot blower control device starts shock wave soot blower and purges the inactivation SCR denitration catalyst；After shock-wave ash blowing terminates, shock wave is closed Soot blower, simultaneously close off the air inlet stop valve of shock wave soot blower；Rotary air blowing device air inlet adjustment valve is opened, uses air compressor machine The pressure for adjusting rotary air blowing device is arrived after suitable pressure value (such as 0.4-0.6MPa), passes through rotary air injection dress The purging inactivation SCR denitration catalyst is put, flying dust is collected into flue-dust retainer, and is discharged by ash hole.
(2) catalyst after step (1) processing, which is placed in cleaning device, is cleaned；
(3) it is dried through the catalyst that step (2) was cleaned in first drying device；
(4) it is placed in regeneration activating in activation device through the dried catalyst of step (3).
In the step (1), if four shock wave soot blowers, then shock-wave ash blowing is started by shock wave soot blower control device Device purge the inactivation SCR denitration catalyst the step of be specifically：On both sides of the middle is first started by shock wave soot blower control device Soot blower purge 2-5 time, restart top both sides shock wave soot blower purging 3-5 times.
It is described that the inactivation SCR denitration catalyst 5- is purged by rotary air blowing device in the step (1) 10min。
The present invention further provides following technical scheme：
A kind of regenerative system of inactivation SCR denitration catalyst is blow device that the regenerative system includes being sequentially connected, clear Cleaning device, the first drying device and activation device, wherein blow device purge to inactivation SCR denitration catalyst；Cleaning dress Put and the catalyst after blow device purges is cleaned；First drying device is to the catalysis after the cleaning of cleaned device Agent is dried；The activation device carries out regeneration activating processing to dried catalyst；
Wherein, the activation device is above-mentioned activation device.
Wherein, the blow device is above-mentioned blow device, and the activation device is above-mentioned activation device.
Wherein, the cleaning device in above-mentioned regenerative system is closed cleaning device, and the closed cleaning device includes cleaning Main body case, ultrasonic ultrasonic delay line memory, supersonic cleaning machine, microbubble generator, catalyst wash rotating disk and tiny structure aspirator； Wherein, ultrasonic wave conductive plate will clean inside main body case and be separated into upper and lower part, and the ultrasonic ultrasonic delay line memory is arranged on cleaning master The upper area of body upper box part, ultrasonic ultrasonic delay line memory lower section are provided with ultrasonic atomizatio nozzle for liquid；Catalyst wash rotating disk is used to put The catalyst is put, catalyst wash rotating disk and the catalyst are respectively positioned on below ultrasonic atomizatio nozzle for liquid；Tiny structure suction dress Above catalyst wash rotating disk and the catalyst；Motor is installed below the catalyst wash rotating disk；Microbubble Generator joint air pump produce microbubble, by pipeline by microbubble from cleaning main body lower box part via cleaning main body case outside It is incorporated into cleaning main body upper box part and is higher than the position of the catalyst, then is incorporated into by pipeline near motor, can be again for pair Raw catalyst is cleaned；The casing side of cleaning main body upper box part is provided with sour entrance, and opposite side is provided with liquid outlet and gone Ion water inlet, or deionized water entrance and sour entrance, in the same side, liquid outlet is in opposite side；Sour entrance and deionized water enter Mouth is less than the position of the catalyst, and liquid outlet is positioned at the bottom of cleaning main body upper box part.
The present invention further provides following technical scheme：
A kind of renovation process of inactivation SCR denitration catalyst, it uses the regeneration system of above-mentioned inactivation SCR denitration catalyst System, this method comprise the following steps：
(1) inactivation SCR denitration catalyst is placed in blow device and purged；
(2) catalyst after step (1) processing is placed in cleaning device, is cleaned；
(3) it is dried through the catalyst that step (2) was cleaned in first drying device；
(4) it is placed in regeneration activating in activation device through the dried catalyst of step (3).
The beneficial effects of the invention are as follows：
The present invention relates to the activation device and regenerative system and method for a kind of inactivation SCR denitration catalyst, using the work The activation that can realize the catalyst is put in makeup, and the regeneration of the catalyst can be realized using the system and method.With Existing regenerative system is compared with method, and the utilization rate of regeneration activity liquid can be greatly improved in system and method for the invention, maximum Recover to degree surface and the pore structure of the inactivation SCR denitration catalyst.
The present invention relates to a kind of blow device of inactivation SCR denitration catalyst and regenerative system and method, with it is existing again Raw system and method are compared, and using the blow device of the present invention, shock-wave ash blowing and rotary air purging are combined, and compressed air swashs Ripple soot blowing is produced the energy of sincere fast fluid shock (shock wave) using moment, is removed catalysis using pressure release outburst release tech The dust stratification of agent, soot blowing intensity is higher, in addition can also loose obstinate dust, soot blowing is more after being purged with reference to rotary air blowing device Thoroughly, clean, can effectively remove the dust of adhesion on a catalyst.The blow device that the other present invention designs can be effectively Dust is collected, reduces flying dust.
The present invention relates to a kind of cleaning device of inactivation SCR denitration catalyst and regenerative system and method, using described clear Cleaning device can realize the cleaning of inactivation SCR denitration catalyst, can realize that inactivation SCR denitration is urged using the system and method The regeneration of agent.Compared with existing regenerative system and method, system and method for the invention cleaning is more thorough, more complete, together When the utilization rate of cleaning fluid can also be greatly improved, farthest recover surface and the pore structure of inactivation SCR denitration catalyst.
The present invention relates to a kind of regenerative system of inactivation SCR denitration catalyst and method, employed in the system above-mentioned Blow device, cleaning device and activation device.Inactivation SCR denitration catalyst can be realized using the system and method again It is raw.Compared with existing regenerative system and method, system and method soot blowing of the invention is more thorough, and cleaning is more complete, also simultaneously The utilization rate of cleaning fluid and regenerated liquid can be greatly improved, farthest recover surface and the hole of inactivation SCR denitration catalyst Structure.
Brief description of the drawings
A kind of preferable process chart of Fig. 1 present invention；
The blow device structure chart of Fig. 2 present invention；
The closed cleaning device structure chart of Fig. 3 present invention；
The semidry method ultrasonic activation structure drawing of device of Fig. 4 present invention；
The structural representation of the regenerative system of the inactivation SCR denitration catalyst of Fig. 5 present invention.
Wherein, 1 cleaning main body case, 11 sour entrances, 12 deionized water entrances, 13 liquid outlets, 2 ultrasonic ultrasonic delay line memories, 21 surpasses Fog nozzle for liquid, 3 supersonic cleaning machines, 4 microbubble generators, 41 air pumps, 5 catalyst wash rotating disks, 51 motors, 6 can be again Raw catalyst, 7 tiny structure aspirators
8 purging main body cases, 9 air compressor machines, 10 permanent airflow apparatus, 14 stop valves, 15 regulating valves, 16 pressure gauges, 17 rotations are empty Gas blowout blowing apparatus, 18 shock wave soot blower control devices, 19 shock wave soot blowers, 20 stop valves, 22 ash holes, 23 flue-dust retainers, 24 can Regenerated catalyst
32 ultrasonic ultrasonic delay line memories, 33 regeneration main body cases, the outlet of 34 regeneration liquid wastes, 35 atomization nozzle for liquid, the rotation of 36 catalyst Rotating disk, 38 motors, 39 tiny structure aspirators
Embodiment
[related definition]
" inactivation SCR denitration catalyst " of the present invention refers to, SCR denitration in the process of running, due to urging Agent dust stratification, active component passage and active sites poisoning etc. reason, catalyst activity gradually reduce, when its activity is reduced to can not When meeting the needs of SCR denitration system, just it is referred to as " inactivation SCR denitration catalyst ".Specifically, SCR denitration is being just Inactivation occurs after often operation certain time, its reason mainly has：
A. alkali metal, alkaline-earth metal, heavy metal etc. make the quantity and intensity decreases of catalyst surface acidic site；
B. the blocking catalyst duct such as flue gas flying dust, sulphur ammonium salt；
C. long-lasting catalytic operation causes sintering of catalyst, etc..
Wherein, the decaying catalyst as caused by reason a, b, belong to the reproducible inactivation SCR denitration alleged by the present invention and urge Agent, also referred to as inactivation SCR denitration catalyst or Regenrable catalyzed.
The known SCR denitration that the SCR denitration uses in the prior art.
The part contacted in the present invention with water or acid uses corrosion-resistant, acidproof material, or using corrosion-resistant, acidproof Material cladding.
[blow device and blowing method]
As it was previously stated, the invention provides a kind of blow device of inactivation SCR denitration catalyst.It is as shown in Fig. 2 of the invention Blow device include purging main body case 8, air compressor machine 9, rotary air blowing device 17, shock wave soot blower 19 and shock wave soot blower Control device 18.
Top of the rotary air blowing device 17 inside purging main body case 8, and pass through pipeline and outside sky Press 9 connects；Permanent airflow apparatus 10, stop valve 14, air inlet adjustment valve 15 and pressure gauge can be arranged as required on the pipeline 16 etc..
The shock wave soot blower 19 is used for the dust stratification for removing inactivation SCR denitration catalyst, and its quantity can be according to actual conditions Set.Four shock wave soot blowers are shown a case that in Fig. 2, illustrate shock wave soot blower by taking this four shock wave soot blowers as an example below Position and annexation.
This four shock wave soot blowers are separately positioned on both sides of the middle and top both sides inside purging main body case, all shock waves Soot blower is controlled by same shock wave soot blower control device 18, four shock wave soot blowers respectively by pipeline P1, P2, P3 and P4 is connected with a total pipeline P0, and the shock wave soot blower is connected by main pipe rail P0 with above-mentioned air compressor machine 9.Every shock wave Soot blower is realized by the different control buttons on the control device 18 to be started, and carries out shock-wave ash blowing.The pipeline P1, Valve (being, for example, air inlet stop valve) 20 can also be respectively set on P2, P3 and P4, shock-wave ash blowing is realized by the valve and air compressor machine Stress control in device.
It is described purging main body case 8 inside bottom be provided with flue-dust retainer 23, purging main body case 8 bottom half provided with The ash hole 22 that the flue-dust retainer 23 is connected, inactivation SCR denitration catalyst 24 are placed in the flue-dust retainer by netted steel construction Top.
Wherein, during work, inactivation SCR denitration catalyst is placed in (such as the inactivation SCR denitration in purging main body case 8 Catalyst is placed in the flue-dust retainer top by netted steel construction), start air compressor machine 9, open the air inlet into shock wave soot blower Stop valve 20, the pressure gauge of shock wave soot blower control device is observed, after pressure is suitable (such as 0.8-1.2MPa), passes through shock wave The soot blower that soot blower control device starts on both sides of the middle purges 2-5 times, restarts the shock wave soot blower purging 3-5 of top both sides It is secondary；After shock-wave ash blowing terminates, shock wave soot blower is closed, simultaneously closes off the air inlet adjustment on P1, P2, P3 and P4 of shock wave soot blower Valve 20.The air inlet adjustment valve 15 of rotary air blowing device 17 is opened, pressure is adjusted to 0.4-0.6MPa with air compressor machine, passes through rotation Turn air blown device 17 and purge 5-10min, flying dust is collected into flue-dust retainer, and can be discharged by ash hole.
[cleaning device and cleaning method]
The invention also provides a kind of closed cleaning device of inactivation SCR denitration catalyst, as shown in figure 3, the present invention The closed cleaning device of inactivation SCR denitration catalyst includes cleaning main body case 1, ultrasonic ultrasonic delay line memory 2, supersonic cleaning machine 3, micro- gas Steep generator 4, catalyst wash rotating disk 5 and tiny structure aspirator 7.Ultrasonic wave conductive plate will clean the inside points of main body case 1 every Into upper and lower part, ultrasonic ultrasonic delay line memory 2 and catalyst wash rotating disk 5 are arranged on the top for cleaning main body case 1, supersonic cleaning machine 3 and microbubble generator 4 be arranged on the bottom of cleaning main body case 1, tiny structure aspirator 7 is arranged on cleaning main body case 1 top Casing on.Wherein, ultrasonic ultrasonic delay line memory 2 is arranged on the upper area on cleaning main body case 1 top, the lower section of ultrasonic ultrasonic delay line memory 2 Ultrasonic atomizatio nozzle for liquid 21 is provided with, the clear of ultrasonic atomization is sprayed into cleaning main body case 1 by ultrasonic atomizatio nozzle for liquid 21 Washing lotion；Catalyst wash rotating disk 5 is used to place catalyst 6, and catalyst wash rotating disk 5 and catalyst 6 are respectively positioned on ultrasonic atomizatio liquid The lower section of nozzle 21；The lower section of catalyst wash rotating disk 5 is provided with motor 51；Tiny structure aspirator 7 is located at catalyst wash rotating disk 5 With the top of catalyst 6；Microbubble generator 4 combine air pump 41 produce microbubble, by pipeline by microbubble from cleaning main body The position that the bottom of case 1 is higher than catalyst 6 via cleaning main body case 1 top is incorporated into outside cleaning main body case 1, then drawn by pipeline Enter near motor 51, for being cleaned to catalyst 6；The casing side on cleaning main body case 1 top is provided with sour entrance 11 With deionized water entrance 12, opposite side is provided with liquid outlet 13, and sour entrance 11 and deionized water entrance 12 are less than the position of catalyst 6 Put, liquid outlet 13 is easy to discharge acid solution or deionized water positioned at the bottom on cleaning main body case 1 top；Alternatively, deionized water Entrance 12 can also be arranged on the side of liquid outlet 13.
The technological process of the cleaning device is as shown in some processes flow in Fig. 1.During work, inactivation SCR denitration catalysis Agent 6 is placed in the top of catalyst wash rotating disk 5, and catalyst wash rotating disk 5 drives 6 turns of the catalyst under the driving of motor 51 It is dynamic；Microbubble is produced by air pump 41 by the microbubble generator 4 first, is burst with microbubble and impacts ablution cleaning The catalyst 6, air pump 41 is closed after the completion of cleaning；Then by tiny structure aspirator 7 in the cleaning inside shape of main body case 1 Into tiny structure environment；Ultrasonic atomization is sprayed by ultrasonic atomizatio nozzle for liquid 21 with ultrasonic ultrasonic delay line memory 2 under tiny structure environment Cleaning fluid, the catalyst 6 is cleaned with semidry method, ultrasonic ultrasonic delay line memory 2 is closed after the completion of cleaning；It is logical that sour entrance 11 is opened again Sour entrance 11 is closed after entering appropriate acid solution, the supersonic cleaning machine 3 cleans the catalyst under ultrasound condition with acid dip 6, after the completion of dipping, pass through liquid outlet 13 and discharge acid solution；Finally open deionized water entrance 12 and be passed through deionized water, the ultrasound Cleaning machine 3 washs the catalyst 6 under ultrasound condition with flow deionized water, and the deionized water after washing passes through liquid outlet 13 Discharge, deionized water entrance 12 is closed after the completion of washing.
A kind of cleaning method of inactivation SCR denitration catalyst is also provided in the present invention, it uses above-mentioned closed cleaning to fill Put, its processing step includes：The inactivation SCR denitration catalyst is placed in the catalyst wash rotating disk of the closed cleaning device On, burst by the microbubble generator with microbubble and impact ablution cleaning, then use ultrasonic wave under tiny structure environment Atomizer is cleaned with semidry method, then is cleaned by the supersonic cleaning machine under ultrasound condition with acid dip, finally again with flowing Deionized water is washed.
Wherein, microbubble explosion impact cleaning 10-50min is first carried out, then uses ultrasonic atomization under tiny structure environment Device cleans 10-50min with semidry method, then cleans 5-10min with acid dip under ultrasound condition, finally uses flow deionized water again Wash 3-5min.
Wherein, it is described using microbubble burst impact ablution cleaning time as 10-50min, preferably 20-30min.Specifically For, it is described with microbubble burst impact cleaning be under ultrasound condition, with microbubble generator and air pump synergy 10-50min is cleaned, its supersonic frequency is 30KHz-40KHz, and the flow of air pump is 0.4m3/h-0.8m3/h。
Wherein, with ultrasonic ultrasonic delay line memory using the time that semidry method is cleaned as 10-50min, preferably 20-30min.It is specific and Speech, the semidry method cleaning are：The tiny structure aspirator is internally formed tiny structure environment in cleaning main body case；Ultrasonic fog Change device under tiny structure environment, the micron order mist particles cleaning fluid using clean air as carrier gas cleans 10-50min, wherein super The condensation rate of Sonic nebulizers is 0.05L/min-1L/min, flow rate of carrier gas 0.1m3/h-5m3/ h, ultrasonic ultrasonic delay line memory frequency For 1.0MHz-4.5MHz.
Wherein, the time cleaned with acid dip is 5-10min.
Wherein, the time washed with flow deionized water is 3-5min.
[activation device and activation method]
As it was previously stated, the invention provides a kind of activation device of inactivation SCR denitration catalyst.As shown in figure 4, the work Makeup is put including regeneration main body case 33, ultrasonic ultrasonic delay line memory 32, catalyst rotary turnplate 36 and tiny structure aspirator 39, ultrasound Ripple atomizer 32 and catalyst rotary turnplate 36 are arranged on the box house of regeneration main body case 33, and tiny structure aspirator 39 is set On the casing of regeneration main body case 33, wherein ultrasonic ultrasonic delay line memory 32 is arranged on the top of regeneration main body case 33, ultrasonic atomization The lower section of device 32 is provided with ultrasonic atomizatio nozzle for liquid 35；Catalyst rotary turnplate 36 is positioned at the middle part of regeneration main body case 33；Regeneration master The casing side of body case 33 is provided with regeneration liquid waste outlet 34.
During work, inactivation SCR denitration catalyst to be activated is placed in the top of catalyst rotary turnplate 36, in the drive of motor 38 Dynamic lower catalyst rotary turnplate 36 drives the catalyst to rotate.The tiny structure aspirator 39 is inside regeneration main body case 33 Form tiny structure environment；Ultrasonic ultrasonic delay line memory 32 is sprayed under tiny structure environment by ultrasonic atomizatio nozzle for liquid 35 to the catalyst The micron order mist particles regeneration activity liquid using clean air as the ultrasonic atomization of carrier gas is spilt, with described in semidry method regeneration activating Catalyst.Wherein, the regeneration activity liquid is by bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, work Property component auxiliary agent, acid and deionized water composition.It is formulated and dosage can configure according to actual conditions.Wherein, bleeding agent is selected from and oozed Saturating agent JFC；Surfactant is selected from OP-10；Complexing agent is selected from polyvinyl alcohol or triethanolamine；Active component auxiliary agent is selected from secondary tungsten Sour ammonium；Acid is the one or more in oxalic acid, acetic acid or carbonic acid.
[regenerative system and renovation process]
Present invention also offers a kind of regenerative system of inactivation SCR denitration catalyst, the regenerative system includes connecting successively Blow device, cleaning device, the first drying device and the activation device connect, wherein blow device is to inactivation SCR denitration catalyst Purged；Cleaning device cleans to the catalyst after blow device purges；First drying device is to cleaned Catalyst after device cleaning is dried；The activation device carries out regeneration activating processing to dried catalyst.
Wherein, the blow device is above-mentioned blow device of the invention.
Wherein, the cleaning device is above-mentioned closed cleaning device of the invention.
Wherein, the activation device is above-mentioned activation device of the invention.
Wherein, the blow device is above-mentioned blow device of the invention, and the cleaning device is the above-mentioned present invention Closed cleaning device.
Wherein, the blow device is above-mentioned blow device of the invention, and the activation device is the above-mentioned present invention Activation device.
Wherein, the cleaning device is above-mentioned closed cleaning device of the invention, and the activation device is above-mentioned sheet The activation device of invention.
Wherein, the blow device is above-mentioned blow device of the invention, and the cleaning device is the above-mentioned present invention Closed cleaning device, it is described activation device be above-mentioned activation device of the invention.
Wherein, also include the second drying device after the activation device, second drying device to activated device at Catalyst after reason is dried, is calcined and cooling treatment.
Wherein, first drying device or the second drying device are baking oven or catalyst drying machine.
Wherein, the activation device is regeneration activity load device.
As shown in figure 1, the present invention a kind of renovation process of inactivation SCR denitration catalyst is also provided, its use it is above-mentioned again Raw system；The processing step of the renovation process includes：
(1) inactivation SCR denitration catalyst is placed in blow device, purged；
(2) catalyst after step (1) processing is placed in the cleaning device and cleaned；
(3) it is dried through the catalyst that step (2) was cleaned in first drying device；
(4) it is placed in activation device and regenerates through the dried catalyst of step (3).
Wherein, methods described further comprises the steps：
(5) catalyst regenerated through step (4) dried in the second drying device, be calcined, cooling is regenerated SCR denitration.
Wherein, in step (1), purged using clean air, pressure 0.4-0.6MPa, time 10-20min.
Wherein, in step (2), cleaned using the closed cleaning device of the present invention, including following four steps：Microbubble explosion punching Cleaning, semidry method cleaning, acid dip cleaning and flowing water is hit to rinse.
Wherein, in step (2), microbubble explosion impact cleaning 10-50min (preferably 20-30min), Ran Hou are first carried out 10-50min (preferably 20-30min) is cleaned with semidry method with ultrasonic ultrasonic delay line memory under tiny structure environment, then used under ultrasound condition 5-10min is cleaned in acid dip, finally washs 3-5min with flow deionized water again.
Wherein, the microbubble explosion impact cleaning in step (2) is under ultrasound condition, with microbubble generator and air 10-50min (preferably 20-30min) is cleaned under pump synergy, its supersonic frequency is 30KHz-40KHz, and the flow of air pump is 0.4m3/h-0.8m3/h。
Wherein, the semidry method in step (2), which is cleaned, is：The tiny structure aspirator is internally formed micro- in cleaning main body case Subnormal ambient；Ultrasonic ultrasonic delay line memory is clear as the micron order mist particles cleaning fluid of carrier gas using clean air under tiny structure environment 10-50min (preferably 20-30min) is washed, the wherein condensation rate of ultrasonic atomizer is 0.05L/min-1L/min, and flow rate of carrier gas is 0.1m3/h-5m3/ h, ultrasonic atomizer frequency are 1.0MHz-4.5MHz.
The present invention combines microbubble explosion impact cleaning, and its advantage is rushed using surface energy produced by microbubble explosion Surface and the micropore of catalyst are hit, the dust of absorption is peeled off, so as to reach cleaning performance.
Wherein, in step (3), 3-5h is dried at 80-110 DEG C.
Wherein, in step (4), the activation device is regeneration activity load device, is lived again by described device The catalyst that property liquid loaded.
Wherein, in step (4), the activation device is the activation device of the present invention, is lived again by described device The catalyst that property liquid loaded.
Wherein, in step (5), the catalyst that (4) regeneration activity liquid loaded will be passed through and dried at a temperature of 80-120 DEG C 4-6h, 4-6h is then calcined at 400-600 DEG C, cools down the SCR denitration regenerated.
The present invention is cleaned using micron order atomization cleaning liquid to catalyst, and its advantage is to improve cleaning fluid utilization rate Surface and the pore structure of inactivation SCR denitration catalyst can farthest be recovered simultaneously.
The present invention is activated using micron order atomization regeneration activity liquid to catalyst, and its advantage is to improve regeneration activity liquid Surface and the pore structure of the inactivation SCR denitration catalyst can farthest be recovered while utilization rate.
Below by way of specific embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention's Scope is only limitted to following example.In the case where not departing from above method thought of the present invention, known according to ordinary skill Know the various replacements or change made with customary means, should be included in the scope of the present invention.
In following examples it is raw materials used unless otherwise specified, be the commercial people in the art that can be commercially available Product known to member.
The regeneration activity liquid used in following embodiments is existing in the prior art to be regenerated for SCR denitration Active liquid, by bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, active component auxiliary agent, acid and go from Sub- water composition.It is formulated and dosage can configure according to actual conditions.Wherein, bleeding agent is selected from penetrating agent JFC；Surfactant selects From OP-10；Complexing agent is selected from polyvinyl alcohol or triethanolamine；Active component auxiliary agent is selected from ammonium paratungstate；Acid for oxalic acid, acetic acid or One or more in carbonic acid.
Embodiment 1-1
Realize that denitration activity is reduced to 18Nm/h, specific surface area is reduced to 41.2m by the method and system shown in Fig. 1-52/g Catalyst (being designated as decaying catalyst A) regeneration treatment：
(1) decaying catalyst A is placed in the blow device shown in Fig. 2 and purged with shock wave soot blower, shock-wave ash blowing number For 7 times (wherein, the soot blowing of on both sides of the middle 4 times, the soot blowings of top both sides 3 times), soot blowing dead angle is few, can dispel out obstinate dust Come, the clean air for being again then 0.55MPa with pressure purges 20min；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.6m to method cleaning 22min3/ h), then used under tiny structure environment With semidry method cleaning 26min, (wherein, for 0.3L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 2.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 2.5MHz), then 6min is cleaned with acid dip under ultrasound condition, finally again with flowing Deionized water washs 4.5min；
(3) catalyst for cleaning (2) 90 DEG C of dry 3h in the first drying device；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.3L/min to liveliness proof liquid ultrasonic spray regeneration activity liquid, and flow rate of carrier gas is 2.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 2.5MHz) regeneration 3h；
(5) catalyst loaded by regeneration activity liquid is dried into 4h in the second drying device at a temperature of 105 DEG C, so 4.5h is calcined at 450 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Denitration efficiency and its specific surface area of detection, regenerated outcome such as following table 1-1：
Table 1-1
Embodiment 1-2
Realize that denitration activity is reduced to 18Nm/h, specific surface area is reduced to 41.2m by the method and system shown in Fig. 1-52/g Catalyst (being designated as decaying catalyst A) regeneration treatment：
(1) decaying catalyst A is placed in the blow device shown in Fig. 1 and purged with shock wave soot blower, shock-wave ash blowing number It is empty for 7 times (wherein, the soot blowing of on both sides of the middle 4 times, the soot blowings of top both sides 3 times), the cleaning for being again then 0.55MPa with pressure 20min is swept in air-blowing；
(2) catalyst after (1) is handled, which is placed in cleaning device, is cleaned by ultrasonic 20-50min；
(3) catalyst for cleaning (2) 90 DEG C of dry 3h in the first drying device；
(4) (3) dried catalyst is placed in known active device, regenerates 3h with regeneration activity liquid；
(5) catalyst loaded by regeneration activity liquid is dried into 4h in the second drying device at a temperature of 105 DEG C, so 4.5h is calcined at 450 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Denitration efficiency and its specific surface area of detection, regenerated outcome such as following table 1-2：
Table 1-2
Embodiment 2
Realize that denitration activity is reduced to 25Nm/h, specific surface area is reduced to 37.8m by the method and system shown in Fig. 1-52/g Catalyst (being designated as decaying catalyst B) regeneration treatment：
(1) decaying catalyst B is placed in the blow device shown in Fig. 2 and purged with shock wave soot blower, shock-wave ash blowing number For 8 times (wherein, the soot blowing of on both sides of the middle 4 times, the soot blowings of top both sides 4 times), soot blowing dead angle is few, can dispel out obstinate dust Come, the clean air for being again then 0.45MPa with pressure purges 15min；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.5m to method cleaning 20min3/ h), then used under tiny structure environment With semidry method cleaning 25min, (wherein, for 0.1L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 1.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 4.0MHz), then 7min is washed with acid dip under ultrasound condition, finally gone with flowing Ion water washing 3.5min；
(3) catalyst for cleaning (2) dries 3h in the first drying device at 110 DEG C；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.8L/min to liveliness proof liquid ultrasonic spray regeneration activity liquid, and flow rate of carrier gas is 2.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 2MHz) regeneration 2.5h；
(5) catalyst loaded by regeneration activity liquid is dried into 4.5h in the second drying device at a temperature of 100 DEG C, Then 4h is calcined at 550 DEG C, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Regenerated catalyst performance and its specific surface area of detection, regenerated outcome such as table 2 below：
Table 2
Embodiment 3-1
Realize that denitration activity is reduced to 20Nm/h, specific surface area is reduced to 45.4m by the method and system shown in Fig. 1-52/g Catalyst (being designated as decaying catalyst C) regeneration treatment：
(1) decaying catalyst C is placed in the blow device shown in Fig. 2 and purged with shock wave soot blower, shock-wave ash blowing number For 10 times (wherein, the soot blowing of on both sides of the middle 5 times, the soot blowings of top both sides 5 times)；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.7m to method cleaning 20min3/ h), then used under tiny structure environment With semidry method cleaning 20min, (wherein, for 0.9L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 4.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 1.0MHz), then 10min is cleaned with acid dip under ultrasound condition, finally with stream Dynamic deionized water washing 5min；
(3) catalyst for cleaning (2) dries 5h in the first drying device at 100 DEG C；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, flow rate of carrier gas 2m to liveliness proof liquid ultrasonic spray regeneration activity liquid3/ H, ultrasonic ultrasonic delay line memory frequency are 3MHz) regeneration 2h；
(5) catalyst loaded by regeneration activity liquid is dried into 5h in the second drying device at a temperature of 110 DEG C, so 4h is calcined at 500 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Regenerate denitrating catalyst performance and detect its specific surface area, regenerated outcome such as following table 3-1：
Table 3-1
Embodiment 3-2
Realize that denitration activity is reduced to 20Nm/h, specific surface area is reduced to 45.4m by the method and system shown in Fig. 1-52/g Catalyst (being designated as decaying catalyst C) regeneration treatment：
(1) decaying catalyst C is placed in the clean air for being 0.4MPa with pressure in blow device and purges 15min；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.7m to method cleaning 20min3/ h), then used under tiny structure environment With semidry method cleaning 20min, (wherein, for 0.9L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 4.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 1.0MHz), then 10min is cleaned with acid dip under ultrasound condition, finally with stream Dynamic deionized water washing 5min；
(3) catalyst for cleaning (2) dries 5h in the first drying device at 100 DEG C；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, flow rate of carrier gas 2m to liveliness proof liquid ultrasonic spray regeneration activity liquid3/ H, ultrasonic ultrasonic delay line memory frequency are 3MHz) regeneration 2h；
(5) catalyst loaded by regeneration activity liquid is dried into 5h in the second drying device at a temperature of 110 DEG C, so 4h is calcined at 500 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Regenerate denitrating catalyst performance and detect its specific surface area, regenerated outcome such as following table 3-2：
Table 3-2
Embodiment 3-3
Realize that denitration activity is reduced to 20Nm/h, specific surface area is reduced to 45.4m by the method and system shown in Fig. 1-52/g Catalyst (being designated as decaying catalyst C) regeneration treatment：
(1) decaying catalyst C is placed in the blow device shown in Fig. 2 and purged with shock wave soot blower, shock-wave ash blowing number It is empty for 10 times (wherein, the soot blowing of on both sides of the middle 5 times, the soot blowings of top both sides 5 times), the cleaning for being again then 0.4MPa with pressure 15min is swept in air-blowing；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.7m to method cleaning 20min3/ h), then used under tiny structure environment With semidry method cleaning 20min, (wherein, for 0.9L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 4.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 1.0MHz), then 10min is cleaned with acid dip under ultrasound condition, finally with stream Dynamic deionized water washing 5min；
(3) catalyst for cleaning (2) dries 5h in the first drying device at 100 DEG C；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, flow rate of carrier gas 2m to liveliness proof liquid ultrasonic spray regeneration activity liquid3/ H, ultrasonic ultrasonic delay line memory frequency are 3MHz) regeneration 2h；
(5) catalyst loaded by regeneration activity liquid is dried into 5h in the second drying device at a temperature of 110 DEG C, so 4h is calcined at 500 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Regenerate denitrating catalyst performance and detect its specific surface area, regenerated outcome such as following table 3-3：
Table 3-3
Embodiment 4
Realize that denitration activity is reduced to 18Nm/h, specific surface area is reduced to by the method and system shown in Fig. 1-2,4-5 41.2m2The regeneration treatment of/g catalyst (being designated as decaying catalyst A)：
(1) decaying catalyst A is placed in the blow device shown in Fig. 2 and purged with shock wave soot blower, shock-wave ash blowing number It is empty for 7 times (wherein, the soot blowing of on both sides of the middle 4 times, the soot blowings of top both sides 3 times), the cleaning for being again then 0.55MPa with pressure 20min is swept in air-blowing；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.6m to method cleaning 22min3/ h), then used under tiny structure environment With semidry method cleaning 26min, (wherein, for 0.3L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 2.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 2.5MHz), then 6min is cleaned with acid dip under ultrasound condition, finally with flowing Deionized water washs 4.5min；
(3) catalyst for cleaning (2) 90 DEG C of dry 3h in the first drying device；
(4) (3) dried catalyst is placed in known active device, regenerates 3h with regeneration activity liquid；
(5) catalyst loaded by regeneration activity liquid is dried into 4h in the second drying device at a temperature of 105 DEG C, so 4.5h is calcined at 450 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Denitration efficiency and its specific surface area of detection, regenerated outcome such as table 4 below：
Table 4
Embodiment 5
Realize that denitration activity is reduced to 25Nm/h, specific surface area is reduced to 37.8m by the method and system shown in Fig. 1-3,52/ The regeneration treatment of g catalyst (being designated as decaying catalyst B)：
(1) decaying catalyst B is placed in the clean air for being 0.45MPa with pressure in purging pond and purges 15min；
(2) catalyst after (1) is handled, which is placed in the closed cleaning device shown in Fig. 3 to burst with microbubble, impacts cleaning (wherein, supersonic frequency 35KHz, the flow of air pump is 0.5m to method cleaning 20min3/ h), then used under tiny structure environment With semidry method cleaning 25min, (wherein, for 0.1L/min, flow rate of carrier gas is the condensation rate of ultrasonic ultrasonic delay line memory ultrasonic ultrasonic delay line memory 1.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 4.0MHz), then 7min is washed with acid dip under ultrasound condition, finally gone with flowing Ion water washing 3.5min；
(3) catalyst for cleaning (2) dries 3h in the first drying device at 110 DEG C；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.8L/min to liveliness proof liquid ultrasonic spray regeneration activity liquid, and flow rate of carrier gas is 2.5m3/ h, ultrasonic ultrasonic delay line memory frequency are 2MHz) regeneration 2.5h；
(5) catalyst loaded by regeneration activity liquid is dried into 4.5h in the second drying device at a temperature of 100 DEG C, Then 4h is calcined at 550 DEG C, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Regenerated catalyst performance and its specific surface area of detection, regenerated outcome such as table 5 below：
Table 5
Embodiment 6
Realize that denitration activity is reduced to 20Nm/h, specific surface area is reduced to 45.4m by the method and system shown in Fig. 1,3-52/ The regeneration treatment of g catalyst (being designated as decaying catalyst C)：
(1) decaying catalyst C is placed in the blow device shown in Fig. 2 and purged with shock wave soot blower, shock-wave ash blowing number It is empty for 10 times (wherein, the soot blowing of on both sides of the middle 5 times, the soot blowings of top both sides 5 times), the cleaning for being again then 0.4MPa with pressure 15min is swept in air-blowing；
(2) catalyst after (1) is handled, which is placed in cleaning device, is cleaned by ultrasonic 20-50min；
(3) catalyst for cleaning (2) dries 5h in the first drying device at 100 DEG C；
(4) (3) dried catalyst is placed in the activation device shown in Fig. 4, be atomized again with micron order with semidry method (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, flow rate of carrier gas 2m to liveliness proof liquid ultrasonic spray regeneration activity liquid3/ H, ultrasonic ultrasonic delay line memory frequency are 3MHz) regeneration 2h；
(5) catalyst loaded by regeneration activity liquid is dried into 5h in the second drying device at a temperature of 110 DEG C, so 4h is calcined at 500 DEG C afterwards, cools down the SCR denitration regenerated.
SCR denitration after regeneration treatment is placed in SCR denitration activity test unit, tested under simulated flue gas Regenerate denitrating catalyst performance and detect its specific surface area, regenerated outcome such as table 6 below：
Table 6

Claims (22)

1. the activation device of a kind of inactivation SCR denitration catalyst, it is characterised in that the activation device includes regeneration main body case, surpassed Sonic nebulizers, catalyst rotary turnplate and tiny structure aspirator, ultrasonic ultrasonic delay line memory and catalyst rotary turnplate are arranged on The box house of main body case is regenerated, tiny structure aspirator is arranged on the casing of regeneration main body case, wherein ultrasonic ultrasonic delay line memory The top of regeneration main body case box house is arranged on, ultrasonic atomizatio nozzle for liquid is provided with below ultrasonic ultrasonic delay line memory；Catalyst revolves Disk of walking around is located at below ultrasonic atomizatio nozzle for liquid；The casing side of regeneration main body case is provided with regeneration liquid waste outlet.
2. activation device according to claim 1, it is characterised in that during work, inactivation SCR denitration catalyst to be activated It is placed in above catalyst rotary turnplate, catalyst rotary turnplate drives the catalyst to rotate under the driving of motor.
3. activation device according to claim 1, it is characterised in that the tiny structure aspirator is in regeneration main body case Portion forms tiny structure environment；Ultrasonic ultrasonic delay line memory is sprayed under tiny structure environment by ultrasonic atomizatio nozzle for liquid to the catalyst Micron order mist particles regeneration activity liquid using clean air as the ultrasonic atomization of carrier gas, to be urged described in semidry method regeneration activating Agent.
4. activation device according to claim 3, it is characterised in that the regeneration activity liquid is by bleeding agent, surface-active Agent, complexing agent, regeneration activity composition ammonium metavanadate, active component auxiliary agent, acid and deionized water composition.
5. activation device according to claim 4, it is characterised in that bleeding agent is selected from penetrating agent JFC；Surfactant selects From OP-10；Complexing agent is selected from polyvinyl alcohol or triethanolamine；Active component auxiliary agent is selected from ammonium paratungstate；Acid for oxalic acid, acetic acid or One or more in carbonic acid.
6. a kind of activation method of inactivation SCR denitration catalyst, it uses the activation device described in claim any one of 1-5, Its processing step includes：Inactivation SCR denitration catalyst to be activated is placed in the catalyst rotary turnplate of the activation device Side, under tiny structure environment with ultrasonic ultrasonic delay line memory by ultrasonic atomizatio nozzle for liquid to the catalyst spray using clean air as The micron order mist particles regeneration activity liquid of the ultrasonic atomization of carrier gas, with catalyst described in semidry method regeneration activating.
7. activation method according to claim 6, it is characterised in that the time of regeneration activating is 1-5h.
8. activation method according to claim 7, it is characterised in that the time of regeneration activating is 2-3h.
9. activation method according to claim 6, it is characterised in that the semidry method regeneration activating is：The tiny structure Aspirator is internally formed tiny structure environment in regeneration main body case；Ultrasonic ultrasonic delay line memory passes through ultrasonic mist under tiny structure environment Change micron order mist particles regeneration activity of the nozzle for liquid to catalyst sprinkling using clean air as the ultrasonic atomization of carrier gas Liquid, 10-50min is activated, the wherein condensation rate of ultrasonic ultrasonic delay line memory is 0.05L/min-1L/min, flow rate of carrier gas 0.1m3/h- 5m3/ h, ultrasonic ultrasonic delay line memory frequency are 1.0MHz-4.5MHz.
It is blow device that the regenerative system includes being sequentially connected, clear 10. a kind of regenerative system of inactivation SCR denitration catalyst Cleaning device, the first drying device and activation device, wherein blow device purge to inactivation SCR denitration catalyst；Cleaning dress Put and the catalyst after blow device purges is cleaned；First drying device is to the catalysis after the cleaning of cleaned device Agent is dried；The activation device carries out regeneration activating processing to dried catalyst；
Wherein, the activation device is the activation device described in claim any one of 1-5.
11. regenerative system according to claim 10, it is characterised in that the blow device includes purging main body case, sky Press, rotary air blowing device, shock wave soot blower and shock wave soot blower control device；The rotary air blowing device is located at The top inside main body case is purged, and is connected by pipeline with the air compressor machine outside purging main body case；The shock-wave ash blowing Device is used for the dust stratification for removing inactivation SCR denitration catalyst, the both sides inside purging main body case, and the shock wave soot blower passes through Shock wave soot blower control device is controlled, and the shock wave soot blower is connected also by pipeline with above-mentioned air compressor machine.
12. regenerative system according to claim 11, it is characterised in that the shock wave soot blower is n, and n is more than or equal to 1, the n shock wave soot blower respectively by pipeline P1 ..., Pn be connected with a total pipeline P0, in the pipeline P1 ..., a valve is respectively arranged with Pn, the shock wave soot blower passes through the total pipeline P0 and connected with described air compressor machine Connect；The shock wave soot blower is controlled by same shock wave soot blower control device, and every shock wave soot blower passes through the control Different control buttons on device, which are realized, to be started, and carries out shock-wave ash blowing.
13. regenerative system according to claim 12, it is characterised in that the quantity n of the shock wave soot blower is 2-8.
14. regenerative system according to claim 12, it is characterised in that the shock wave soot blower is set as four, respectively The on both sides of the middle being arranged on inside purging main body case and top both sides.
15. regenerative system according to claim 11, it is characterised in that be connected in rotary air blowing device with air compressor machine Pipeline on persevering airflow apparatus is set.
16. regenerative system according to claim 15, it is characterised in that be connected in rotary air blowing device with air compressor machine Pipeline on be additionally provided with stop valve, air inlet adjustment valve and pressure gauge.
17. regenerative system according to claim 11, it is characterised in that the bottom inside the purging main body case is set There is flue-dust retainer, the ash hole being connected with the flue-dust retainer, the inactivation SCR denitration are provided with the bottom half of purging main body case Catalyst is placed in the flue-dust retainer top by netted steel construction, and the surface dirt of the inactivation SCR denitration catalyst is through over-blowing Automatically fallen into after sweeping in flue-dust retainer.
18. regenerative system according to claim 10, it is characterised in that the cleaning device in above-mentioned regenerative system is closed Cleaning device, the closed cleaning device include clean main body case, ultrasonic ultrasonic delay line memory, supersonic cleaning machine, microbubble generator, Catalyst wash rotating disk and tiny structure aspirator；Wherein, ultrasonic wave conductive plate will clean inside main body case and be separated into top And bottom, the ultrasonic ultrasonic delay line memory are arranged on the upper area of cleaning main body upper box part, are provided with below ultrasonic ultrasonic delay line memory super Sound is atomized nozzle for liquid；Catalyst wash rotating disk is used to place the catalyst, catalyst wash rotating disk and the equal position of the catalyst Below ultrasonic atomizatio nozzle for liquid；Tiny structure aspirator is located above catalyst wash rotating disk and the catalyst；It is described to urge Motor is installed below agent cleaning rotating disk；Microbubble generator joint air pump produces microbubble, by pipeline by microbubble From the position that cleaning main body lower box part is higher than the catalyst via cleaning main body upper box part is incorporated into outside cleaning main body case, then It is incorporated into by pipeline near motor, for being cleaned to Regenrable catalyzed；Clean the casing side peace of main body upper box part Equipped with sour entrance, opposite side is provided with liquid outlet and deionized water entrance, or deionized water entrance and sour entrance be in the same side, Liquid outlet is in opposite side；Sour entrance and deionized water entrance are less than the position of the catalyst, and liquid outlet is positioned at cleaning main body case The bottom on top.
19. a kind of renovation process of inactivation SCR denitration catalyst, it uses the inactivation SCR described in claim any one of 10-18 The regenerative system of denitrating catalyst, this method comprise the following steps：
(1) inactivation SCR denitration catalyst is placed in blow device, purged；
(2) catalyst after step (1) processing is placed in cleaning device, is cleaned；
(3) it is dried through the catalyst that step (2) was cleaned in first drying device；
(4) it is placed in regeneration activating in activation device through the dried catalyst of step (3).
20. renovation process according to claim 19, it is characterised in that step (1) specifically includes following steps：
Inactivation SCR denitration catalyst is placed in blow device, starts air compressor machine, is opened on the pipeline of shock wave soot blower Air inlet stop valve, the pressure of shock wave soot blower is adjusted to after suitable pressure value, is started by shock wave soot blower control device and swashed Ripple soot blower purges the inactivation SCR denitration catalyst；After shock-wave ash blowing terminates, shock wave soot blower is closed, simultaneously closes off shock wave The air inlet stop valve of soot blower；The air inlet adjustment valve of rotary air blowing device is opened, is blown with air compressor machine regulation rotary air The pressure of device purges the inactivation SCR denitration catalyst, flying dust to after suitable pressure value, passing through rotary air blowing device It is collected into flue-dust retainer, and is discharged by ash hole.
21. renovation process according to claim 19, it is characterised in that the activation of step (4) is appointed using claim 6-9 Activation method described in one.
22. renovation process according to claim 19, it is characterised in that the cleaning method of step (2) is：It uses right It is required that the closed cleaning device described in 18, its processing step include：The inactivation SCR denitration catalyst is placed in described closed On the catalyst wash rotating disk of cleaning device, burst by the microbubble generator with microbubble and impact ablution cleaning, so Cleaned with semidry method with ultrasonic ultrasonic delay line memory under tiny structure environment, then used by the supersonic cleaning machine under ultrasound condition afterwards Acid dip is cleaned, and is finally washed again with flow deionized water.
CN201510943164.2A 2015-09-11 2015-12-16 A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method Expired - Fee Related CN105381716B (en)

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