CN105381716A - Deactivated SCR denitration catalyst purging device, activation device and regeneration system and corresponding methods - Google Patents

Deactivated SCR denitration catalyst purging device, activation device and regeneration system and corresponding methods Download PDF

Info

Publication number
CN105381716A
CN105381716A CN201510943164.2A CN201510943164A CN105381716A CN 105381716 A CN105381716 A CN 105381716A CN 201510943164 A CN201510943164 A CN 201510943164A CN 105381716 A CN105381716 A CN 105381716A
Authority
CN
China
Prior art keywords
catalyst
scr denitration
shock wave
soot blower
ultrasonic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510943164.2A
Other languages
Chinese (zh)
Other versions
CN105381716B (en
Inventor
杨广华
王洪明
黄丽明
余立清
赖永花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Longyan Cercis Innovation Research Institute
Fujian Cercis Environment Project Co Ltd
Original Assignee
Longyan Cercis Innovation Research Institute
Fujian Cercis Environment Project Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Longyan Cercis Innovation Research Institute, Fujian Cercis Environment Project Co Ltd filed Critical Longyan Cercis Innovation Research Institute
Priority to CN201510943164.2A priority Critical patent/CN105381716B/en
Publication of CN105381716A publication Critical patent/CN105381716A/en
Application granted granted Critical
Publication of CN105381716B publication Critical patent/CN105381716B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

The present invention relates to a deactivated SCR denitration catalyst purging device, an activation device and a regeneration system and corresponding methods, the activation device includes a regeneration main body tank, an ultrasonic atomization device, a catalyst rotating turntable and a micro negative pressure suction device; and the regeneration system includes the purging device, a cleaning device, a first drying device and the activation device which are connected in turn. The regeneration system can achieve deactivated catalyst regeneration, and compared with the normal regeneration process, the process is more thorough in purging and more complete in cleaning, also greatly improves the utilization ratio of a cleaning solution and a regeneration solution, and maximizes recovery of surface and pore structure of a deactivated catalyst.

Description

A kind of blow device of inactivation SCR denitration catalyst, activating apparatus and regenerative system and corresponding method
Technical field
The invention belongs to catalyst regeneration techniques field, be specifically related to a kind of blow device of inactivation SCR denitration catalyst, activating apparatus and regenerative system and corresponding method.
Background technology
Industrialized develop rapidly while also exacerbate the deterioration of environment, the environmental problems such as haze are day by day serious, and along with the implementation of " 12 " planning emission reduction tasks, national discharged nitrous oxides standard is more strict, accelerates the development of denitration technology.Due to SCR (Selectivecatalyticreduction, SCR) denitration technology mature and reliable, therefore SCR denitration technology is always in occupation of the very large market share, but catalyst cost is wherein too high, and the service life of general commercial catalysts is 3-5, if directly more catalyst changeout will increase its denitration cost widely, the waste catalyst simultaneously produced due to containing heavy metal Deng Cheng branch to environment, the regeneration issues therefore studying SCR denitration is significant.
SCR denitration is in running, due to surface area reduce, the passage of activating agent and the reason such as poisoning, catalyst activity reduces gradually, when its activity is reduced to a certain degree, when cannot meet the needs of SCR denitration system, we are referred to as " inactivation SCR denitration catalyst ", and when this inactivation cannot reduce, we are referred to as " discarded SCR denitration ".
Catalyst regeneration adopts certain technological means to make its active recovery obtained to a certain extent for inactivation SCR denitration catalyst.Along with the amount of putting into operation of SCR denitration system increases, SCR denitration consumption increases, and its regeneration requirements is also increasing, defines SCR denitration regeneration market gradually, about the ten thousand stere of domestic annual catalyst regeneration market about 20.From the viewpoint of reduction SCR denitration system operating cost and the discarded SCR denitration solid waste two of minimizing, all need the regeneration industry greatly developing SCR denitration.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, the blow device of the inactivation SCR denitration catalyst that a kind of regeneration efficiency of economizing type is very high, activating apparatus and regenerative system and corresponding method are provided.
To achieve these goals, the invention provides following technical scheme:
A blow device for inactivation SCR denitration catalyst, this blow device comprises purging main body case, air compressor machine, rotary air blowing device, shock wave soot blower and shock wave soot blower control device; Described rotary air blowing device is positioned at and purges the top of main body case inside, and by pipeline be positioned at the air compressor machine purging main body case outside and be connected; Described shock wave soot blower is for removing the dust stratification of inactivation SCR denitration catalyst, and be positioned at the both sides purging main body case inside, described shock wave soot blower is controlled by shock wave soot blower control device, and described shock wave soot blower is also connected with above-mentioned air compressor machine by pipeline.
Wherein, described shock wave soot blower is n, n is more than or equal to 1, this n shock wave soot blower respectively by pipeline P1 ..., Pn is connected with a total pipeline P0, described pipeline P1 ..., Pn is respectively arranged with a valve (being such as air inlet stop valve), described shock wave soot blower is connected with described air compressor machine by described total pipeline P0; Described shock wave soot blower is controlled by same shock wave soot blower control device, and every platform shock wave soot blower realizes starting by the different control button on described control device, carries out shock-wave ash blowing.
Wherein, the quantity n of described shock wave soot blower can determine according to actual conditions, as 2-8, and preferred 4-6.Preferably, described shock wave soot blower is set as four, is separately positioned on the both sides, middle part and both sides, top that purge main body case inside.
Wherein, the pipeline be connected with air compressor machine at rotary air blowing device arranges persevering airflow apparatus.Preferably, stop valve, air inlet adjustment valve and Pressure gauge is also provided with.
Wherein, the bottom of described purging main body case inside is provided with flue-dust retainer, is provided with at the bottom half purging main body case the ash hole be connected with described flue-dust retainer.Described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure, and the surface dirt of described inactivation SCR denitration catalyst automatically falls into flue-dust retainer after purging.
Wherein, during work, start air compressor machine, open the air inlet stop valve entered on the pipeline of shock wave soot blower, as (such as 0.8-1.2MPa) after the force value that the manometric force value of shock wave soot blower control device reaches suitable, start shock wave soot blower by shock wave soot blower control device and purge described inactivation SCR denitration catalyst; After shock-wave ash blowing terminates, close shock wave soot blower by shock wave soot blower control device, close the air inlet stop valve of shock wave soot blower simultaneously.Open the air inlet adjustment valve of rotary air blowing device, with after air compressor machine adjustment pressure to suitable force value (as 0.4-0.6MPa), purge described inactivation SCR denitration catalyst by rotary air blowing device, flying dust is collected in flue-dust retainer, and discharges by ash hole.
The present invention also provides following technical scheme:
A blowing method for inactivation SCR denitration catalyst, it adopts above-mentioned blow device, and described blowing method comprises the following steps:
Inactivation SCR denitration catalyst is placed in (such as described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure) in blow device, start air compressor machine, open the air inlet stop valve entered on the pipeline of shock wave soot blower, regulate the pressure of shock wave soot blower to (such as 0.8-1.2MPa) after suitable force value, purge described inactivation SCR denitration catalyst by shock wave soot blower control device startup shock wave soot blower; After shock-wave ash blowing terminates, close shock wave soot blower, close the air inlet stop valve of shock wave soot blower simultaneously; Open the air inlet adjustment valve of rotary air blowing device, (such as 0.4-0.6MPa) after the pressure of rotary air blowing device to suitable force value is regulated with air compressor machine, described inactivation SCR denitration catalyst is purged by rotary air blowing device, flying dust is collected in flue-dust retainer, and is discharged by ash hole.
Wherein, if four shock wave soot blowers, then start shock wave soot blower by shock wave soot blower control device and purge the step of described inactivation SCR denitration catalyst specifically: the soot blower first being started both sides, middle part by shock wave soot blower control device is purged 2-5 time, the shock wave soot blower restarting both sides, top purges 3-5 time.
Wherein, describedly described inactivation SCR denitration catalyst 5-10min is purged by rotary air blowing device.
The present invention also provides following technical scheme:
A kind of activating apparatus of inactivation SCR denitration catalyst, this activating apparatus comprises regeneration main body case, ultrasonic ultrasonic delay line memory, catalyst rotary turnplate and tiny structure aspirator, ultrasonic ultrasonic delay line memory and catalyst rotary turnplate are arranged on the box house of regeneration main body case, tiny structure aspirator is arranged on the casing of regeneration main body case, wherein ultrasonic ultrasonic delay line memory is arranged on the top of regeneration main body case box house, is provided with ultrasonic atomizatio nozzle for liquid below ultrasonic ultrasonic delay line memory; Catalyst rotary turnplate is positioned at 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, and under the driving of motor, catalyst rotary turnplate drives described catalyst to rotate.
Further, described tiny structure aspirator forms tiny structure environment in regeneration main body case inside; Ultrasonic ultrasonic delay line memory sprays with clean air the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas under tiny structure environment to described catalyst by ultrasonic atomizatio nozzle for liquid, with catalyst described in semidry method regeneration activating.
Wherein, described regeneration activity liquid is made up of bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, active component auxiliary agent, acid and deionized water.Its formula and consumption can configure according to actual conditions.Wherein, bleeding agent is selected from penetrating agent JFC; Surfactant is selected from OP-10; Complexing agent is selected from polyvinyl alcohol or triethanolamine; Active component auxiliary agent is selected from ammonium paratungstate; Acid is 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 adopts above-mentioned activating apparatus, its processing step comprises: above catalyst rotary turnplate inactivation SCR denitration catalyst to be activated being placed in described activating apparatus, the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas is sprayed with clean air to described catalyst by ultrasonic atomizatio nozzle for liquid with ultrasonic ultrasonic delay line memory, with catalyst described in semidry method regeneration activating under tiny structure environment.
Further, the time of regeneration activating is 1-5h, preferred 2-3h.Specifically, described semidry method regeneration activating is: described tiny structure aspirator forms tiny structure environment in regeneration main body case inside; Ultrasonic ultrasonic delay line memory is under tiny structure environment, sprayed with clean air the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas to described catalyst by ultrasonic atomizatio nozzle for liquid, activation 10-50min, wherein the condensation rate of ultrasonic ultrasonic delay line memory is 0.05L/min-1L/min, and flow rate of carrier gas is 0.1m 3/ h-5m 3/ h, ultrasonic ultrasonic delay line memory frequency is 1.0MHz-4.5MHz.
The present invention further provides following technical scheme:
A regenerative system for inactivation SCR denitration catalyst, described regenerative system comprises the blow device, cleaning device, the first drying device and the activating apparatus that connect successively, and wherein blow device purges inactivation SCR denitration catalyst; Cleaning device cleans the catalyst after blow device purging; Described first drying device carries out drying to the catalyst after cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst;
Wherein, described blow device is above-mentioned blow device.
The present invention further provides following technical scheme:
A renovation process for inactivation SCR denitration catalyst, it adopts the regenerative system of above-mentioned inactivation SCR denitration catalyst, and the method comprises the following steps:
(1) inactivation SCR denitration catalyst to be placed in blow device (such as described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure) and to carry out following steps: starting air compressor machine, open the air inlet stop valve entered on the pipeline of shock wave soot blower, regulate the pressure of shock wave soot blower to (such as 0.8-1.2MPa) after suitable force value, purge described inactivation SCR denitration catalyst by shock wave soot blower control device startup shock wave soot blower; After shock-wave ash blowing terminates, close shock wave soot blower, close the air inlet stop valve of shock wave soot blower simultaneously; Open rotary air blowing device air inlet adjustment valve, (such as 0.4-0.6MPa) after the pressure of rotary air blowing device to suitable force value is regulated with air compressor machine, described inactivation SCR denitration catalyst is purged by rotary air blowing device, flying dust is collected in flue-dust retainer, and is discharged by ash hole.
(2) catalyst after step (1) process is placed in cleaning device and cleans;
(3) in described first drying device, drying is carried out through the catalyst that step (2) is cleaned;
(4) activating apparatus regeneration activating is placed in through the catalyst that step (3) is dried.
In described step (1), if four shock wave soot blowers, then start shock wave soot blower by shock wave soot blower control device and purge the step of described inactivation SCR denitration catalyst specifically: the soot blower first being started both sides, middle part by shock wave soot blower control device is purged 2-5 time, the shock wave soot blower restarting both sides, top purges 3-5 time.
In described step (1), describedly purge described inactivation SCR denitration catalyst 5-10min by rotary air blowing device.
The present invention further provides following technical scheme:
A regenerative system for inactivation SCR denitration catalyst, described regenerative system comprises the blow device, cleaning device, the first drying device and the activating apparatus that connect successively, and wherein blow device purges inactivation SCR denitration catalyst; Cleaning device cleans the catalyst after blow device purging; Described first drying device carries out drying to the catalyst after cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst;
Wherein, described activating apparatus is above-mentioned activating apparatus.
Wherein, described blow device is above-mentioned blow device, and described activating apparatus is above-mentioned activating apparatus.
Wherein, the cleaning device in above-mentioned regenerative system is airtight cleaning device, and this airtight cleaning device comprises cleaning main body case, ultrasonic ultrasonic delay line memory, supersonic cleaning machine, microbubble generator, catalyst wash rotating disk and tiny structure aspirator; Wherein, cleaning main body case interior separation is become upper and lower by ultrasonic wave conductive plate, and this ultrasonic ultrasonic delay line memory is arranged on the upper area on cleaning main body case top, is provided with ultrasonic atomizatio nozzle for liquid below ultrasonic ultrasonic delay line memory; Catalyst wash rotating disk is for placing described catalyst, and catalyst wash rotating disk and described catalyst are all positioned at below ultrasonic atomizatio nozzle for liquid; Tiny structure aspirator is positioned at above catalyst wash rotating disk and described catalyst; Below described catalyst wash rotating disk, motor is installed; Microbubble generator associating air pump produces microbubble, by pipeline, microbubble is incorporated into the position of cleaning main body case top higher than described catalyst from cleaning main body case bottom via cleaning main body case outside, be incorporated near motor by pipeline again, for cleaning Regenrable catalyzed dose; The casing side on cleaning main body case top is provided with sour entrance, and opposite side is provided with liquid outlet and deionized water entrance, or deionized water entrance and sour entrance are in the same side, and liquid outlet is at opposite side; Acid entrance and deionized water entrance are lower than the position of described catalyst, and liquid outlet is positioned at the bottom on cleaning main body case top.
The present invention further provides following technical scheme:
A renovation process for inactivation SCR denitration catalyst, it adopts the regenerative system of above-mentioned inactivation SCR denitration catalyst, and the method comprises the following steps:
(1) inactivation SCR denitration catalyst is placed in blow device to purge;
(2) catalyst after step (1) process is placed in cleaning device, cleans;
(3) in described first drying device, drying is carried out through the catalyst that step (2) is cleaned;
(4) activating apparatus regeneration activating is placed in through the catalyst that step (3) is dried.
The invention has the beneficial effects as follows:
The present invention relates to a kind of activating apparatus of inactivation SCR denitration catalyst and regenerative system and method, adopt described activating apparatus can realize the activation of described catalyst, adopt described system and method can realize the regeneration of described catalyst.Compare with method with existing regenerative system, system and method for the present invention greatly can improve the utilization rate of regeneration activity liquid, farthest recovers surface and the pore structure of described inactivation SCR denitration catalyst.
The present invention relates to a kind of blow device of inactivation SCR denitration catalyst and regenerative system and method, compare with method with existing regenerative system, adopt blow device of the present invention, shock-wave ash blowing and rotary air purge and combine, compressed air shock-wave ash blowing adopts pressure release outburst release tech, utilize the energy producing sincere fast fluid shock (shock wave) instantaneously, remove the dust stratification of catalyst, blow grey intensity higher, in addition can also loose obstinate dust, after-blow ash is purged more thorough in conjunction with rotary air blowing device, clean, effectively can remove adhesion dust on a catalyst.The blow device of the present invention's design can collect dust effectively in addition, reduces flying dust.
The present invention relates to a kind of cleaning device of inactivation SCR denitration catalyst and regenerative system and method, adopt described cleaning device can realize the cleaning of inactivation SCR denitration catalyst, adopt described system and method can realize the regeneration of inactivation SCR denitration catalyst.Compare with method with existing regenerative system, system and method for the present invention cleans more thoroughly, more completely, also greatly can improve the utilization rate of cleaning fluid simultaneously, farthest recover surface and the pore structure of inactivation SCR denitration catalyst.
The present invention relates to a kind of regenerative system and method for inactivation SCR denitration catalyst, in described system, have employed above-mentioned blow device, cleaning device and activating apparatus.Adopt described system and method can realize the regeneration of inactivation SCR denitration catalyst.Compare with method with existing regenerative system, it is more thorough that system and method for the present invention blows ash, and cleaning is more complete, also greatly can improve the utilization rate of cleaning fluid and regenerated liquid simultaneously, farthest recover surface and the pore structure of inactivation SCR denitration catalyst.
Accompanying drawing explanation
The preferred process chart of Fig. 1 one of the present invention;
Fig. 2 blow device structure chart of the present invention;
Fig. 3 airtight cleaning device structure chart of the present invention;
Fig. 4 semidry method ultrasonic activation of the present invention structure drawing of device;
The structural representation of the regenerative system of Fig. 5 inactivation SCR denitration catalyst of the 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 excusing from death atomized liquid nozzles, 3 supersonic cleaning machines, 4 microbubble generators, 41 air pumps, 5 catalyst wash rotating disks, 51 motors, 6 Regenrable catalyzed doses, 7 tiny structure aspirators
8 purge main body case, 9 air compressor machines, 10 permanent airflow apparatus, 14 stop valves, 15 control valves, 16 Pressure gauges, 17 rotary air blowing devices, 18 shock wave soot blower control device, 19 shock wave soot blowers, 20 stop valves, 22 ash holes, 23 flue-dust retainers, 24 Regenrable catalyzed doses
32 ultrasonic ultrasonic delay line memories, 33 regeneration main body cases, 34 regeneration liquid waste outlets, 35 atomized liquid nozzles, 36 catalyst rotary turnplate, 38 motors, 39 tiny structure aspirators
Detailed description of the invention
[related definition]
" inactivation SCR denitration catalyst " of the present invention refers to, SCR denitration is in running, due to catalyst dust stratification, active component passage and the reason such as active sites is poisoning, catalyst activity reduces gradually, when its activity is reduced to the needs that cannot meet SCR denitration system, be just referred to as " inactivation SCR denitration catalyst ".Specifically, SCR denitration there will be inactivation after normally running certain hour, and its reason mainly contains:
A. alkali metal, alkaline-earth metal, heavy metal etc. make the quantity of catalyst surface acidic site and intensity reduce;
B. the blocking catalyst duct such as flue gas flying dust, sulphur ammonium salt;
C. long-lasting catalytic runs and causes sintering of catalyst, etc.
Wherein, the decaying catalyst caused by reason a, b, belongs to the reproducible inactivation SCR denitration catalyst alleged by the present invention, also claims inactivation SCR denitration catalyst or Regenrable catalyzed dose.
The known SCR denitration used in described SCR denitration and prior art.
The parts contacted with water or acid in the present invention all adopt corrosion-resistant, acidproof material, or adopt corrosion-resistant, acidproof material coated.
[blow device and blowing method]
As previously mentioned, the invention provides a kind of blow device of inactivation SCR denitration catalyst.As shown in Figure 2, blow device of the present invention comprises 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.
Described rotary air blowing device 17 is positioned at the top purging main body case 8 inside, and is connected with outside air compressor machine 9 by pipeline; This pipeline can arrange permanent airflow apparatus 10, stop valve 14, air inlet adjustment valve 15 and Pressure gauge 16 etc. as required.
Described shock wave soot blower 19 is for removing the dust stratification of inactivation SCR denitration catalyst, and its quantity can be arranged according to actual conditions.The situation of four shock wave soot blowers is shown in Fig. 2, position and the annexation of shock wave soot blower have been described for these four shock wave soot blowers below.
These four shock wave soot blowers are separately positioned on the both sides, middle part and both sides, top that purge main body case inside, all shock wave soot blowers are controlled by same shock wave soot blower control device 18, four shock wave soot blowers are connected with a total pipeline P0 with P4 respectively by pipeline P1, P2, P3, and described shock wave soot blower is connected with above-mentioned air compressor machine 9 by main pipe rail P0.Every platform shock wave soot blower realizes starting by the different control button on described control device 18, carries out shock-wave ash blowing.Described pipeline P1, P2, P3 and P4 also can be arranged respectively valve (being such as air inlet stop valve) 20, be realized the Stress control in shock wave soot blower by this valve and air compressor machine.
The bottom of described purging main body case 8 inside is provided with flue-dust retainer 23, and be provided with at the bottom half purging main body case 8 ash hole 22 be connected with described flue-dust retainer 23, inactivation SCR denitration catalyst 24 is placed in described flue-dust retainer top by net-shaped steel structure.
Wherein, during work, inactivation SCR denitration catalyst is placed in and purges in main body case 8 (such as described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure), start air compressor machine 9, open the air inlet stop valve 20 entering shock wave soot blower, observe the Pressure gauge of shock wave soot blower control device, after pressure is suitable (such as 0.8-1.2MPa), the soot blower being started both sides, middle part by shock wave soot blower control device is purged 2-5 time, and the shock wave soot blower restarting both sides, top purges 3-5 time; After shock-wave ash blowing terminates, close shock wave soot blower, close the air inlet adjustment valve 20 on P1, P2, P3 and P4 of shock wave soot blower simultaneously.Open the air inlet adjustment valve 15 of rotary air blowing device 17, regulate pressure to 0.4-0.6MPa with air compressor machine, purge 5-10min by rotary air blowing device 17, flying dust is collected in flue-dust retainer, and discharges by ash hole.
[cleaning device and cleaning method]
The invention allows for a kind of airtight cleaning device of inactivation SCR denitration catalyst, as shown in Figure 3, the airtight cleaning device of inactivation SCR denitration catalyst of the present invention comprises cleaning main body case 1, ultrasonic ultrasonic delay line memory 2, supersonic cleaning machine 3, microbubble generator 4, catalyst wash rotating disk 5 and tiny structure aspirator 7.Cleaning main body case 1 interior separation is become upper and lower by ultrasonic wave conductive plate, ultrasonic ultrasonic delay line memory 2 and catalyst wash rotating disk 5 are arranged on the top of cleaning main body case 1, supersonic cleaning machine 3 and microbubble generator 4 are arranged on the bottom of cleaning main body case 1, and tiny structure aspirator 7 is arranged on the casing on cleaning main body case 1 top.Wherein, ultrasonic ultrasonic delay line memory 2 is arranged on the upper area on cleaning main body case 1 top, is provided with ultrasonic atomizatio nozzle for liquid 21 below ultrasonic ultrasonic delay line memory 2, is sprayed the cleaning fluid of ultrasonic atomization by ultrasonic atomizatio nozzle for liquid 21 in cleaning main body case 1; Catalyst wash rotating disk 5 is for placing catalyst 6, and catalyst wash rotating disk 5 and catalyst 6 are all positioned at below ultrasonic atomizatio nozzle for liquid 21; Motor 51 is installed below catalyst wash rotating disk 5; Tiny structure aspirator 7 is positioned at above catalyst wash rotating disk 5 and catalyst 6; Microbubble generator 4 is combined air pump 41 and is produced microbubble, by pipeline, microbubble is incorporated into the position of cleaning main body case 1 top higher than catalyst 6 from cleaning main body case 1 bottom via cleaning main body case 1 outside, be incorporated near motor 51 by pipeline again, for cleaning catalyst 6; The casing side on cleaning main body case 1 top is provided with sour entrance 11 and deionized water entrance 12, opposite side is provided with liquid outlet 13, acid entrance 11 and deionized water entrance 12 are lower than the position of catalyst 6, and liquid outlet 13 is positioned at the bottom on cleaning main body case 1 top, are convenient to discharge acid solution or deionized water; Alternatively, deionized water entrance 12 also can be arranged on liquid outlet 13 side.
The technological process of this cleaning device is as shown in the some processes flow process in Fig. 1.During work, inactivation SCR denitration catalyst 6 is placed in above catalyst wash rotating disk 5, and under the driving of motor 51, catalyst wash rotating disk 5 drives described catalyst 6 to rotate; First produce microbubble by described microbubble generator 4 by air pump 41, impact ablution with microbubble explosion and clean described catalyst 6, cleaned rear closedown air pump 41; Then tiny structure environment is formed by tiny structure aspirator 7 in cleaning main body case 1 inside; Under tiny structure environment, sprayed the cleaning fluid of ultrasonic atomization with ultrasonic ultrasonic delay line memory 2 by ultrasonic atomizatio nozzle for liquid 21, clean described catalyst 6 with semidry method, clean rear closedown ultrasonic ultrasonic delay line memory 2; Open after sour entrance 11 passes into appropriate acid solution again and close sour entrance 11, described supersonic cleaning machine 3 cleans described catalyst 6 with acid dip under ultrasound condition, after having flooded, discharges acid solution by liquid outlet 13; Finally open deionized water entrance 12 and pass into deionized water, described supersonic cleaning machine 3 washs described catalyst 6 by flow deionized water under ultrasound condition, and the deionized water after washing is discharged by liquid outlet 13, has washed rear closedown deionized water entrance 12.
A kind of cleaning method of inactivation SCR denitration catalyst is also provided in the present invention, it adopts above-mentioned airtight cleaning device, its processing step comprises: described inactivation SCR denitration catalyst be placed on the catalyst wash rotating disk of described airtight cleaning device, ablution cleaning is impacted with microbubble explosion by described microbubble generator, then clean with semidry method with ultrasonic ultrasonic delay line memory under tiny structure environment, cleaned with acid dip under ultrasound condition by described supersonic cleaning machine again, finally wash by flow deionized water again.
Wherein, first carry out microbubble explosion and impact cleaning 10-50min, then under tiny structure environment, clean 10-50min with ultrasonic ultrasonic delay line memory with semidry method, then clean 5-10min with acid dip under ultrasound condition, finally wash 3-5min by flow deionized water again.
Wherein, described with microbubble explosion impact ablution cleaning time for 10-50min, preferred 20-30min.Specifically, described is under ultrasound condition with microbubble explosion impact cleaning, and clean 10-50min with under microbubble generator and air pump synergy, its supersonic frequency is 30KHz-40KHz, and the flow of air pump is 0.4m 3/ h-0.8m 3/ h.
Wherein, the time of cleaning with semidry method with ultrasonic ultrasonic delay line memory for 10-50min, preferred 20-30min.Specifically, described semidry method cleaning is: described tiny structure aspirator forms tiny structure environment in cleaning main body case inside; Ultrasonic ultrasonic delay line memory is under tiny structure environment, and take clean air as the micron order mist particles cleaning fluid cleaning 10-50min of carrier gas, wherein the condensation rate of ultrasonic ultrasonic delay line memory is 0.05L/min-1L/min, and flow rate of carrier gas is 0.1m 3/ h-5m 3/ h, ultrasonic ultrasonic delay line memory frequency is 1.0MHz-4.5MHz.
Wherein, with acid dip cleaning time be 5-10min.
Wherein, with flow deionized water washing time be 3-5min.
[activating apparatus and activation method]
As previously mentioned, the invention provides a kind of activating apparatus of inactivation SCR denitration catalyst.As shown in Figure 4, described activating apparatus comprises regeneration main body case 33, ultrasonic ultrasonic delay line memory 32, catalyst rotary turnplate 36 and tiny structure aspirator 39, ultrasonic ultrasonic delay line memory 32 and catalyst rotary turnplate 36 are arranged on the box house of regeneration main body case 33, tiny structure aspirator 39 is arranged 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, is provided with ultrasonic atomizatio nozzle for liquid 35 below ultrasonic ultrasonic delay line memory 32; Catalyst rotary turnplate 36 is positioned at the middle part of regeneration main body case 33; The casing side of regeneration main body case 33 is provided with regeneration liquid waste outlet 34.
During work, inactivation SCR denitration catalyst to be activated is placed in above catalyst rotary turnplate 36, and under the driving of motor 38, catalyst rotary turnplate 36 drives described catalyst to rotate.Described tiny structure aspirator 39 forms tiny structure environment in regeneration main body case 33 inside; Ultrasonic ultrasonic delay line memory 32 sprays with clean air the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas under tiny structure environment to described catalyst by ultrasonic atomizatio nozzle for liquid 35, with catalyst described in semidry method regeneration activating.Wherein, described regeneration activity liquid is made up of bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, active component auxiliary agent, acid and deionized water.Its formula and consumption can configure according to actual conditions.Wherein, bleeding agent is selected from penetrating agent JFC; Surfactant is selected from OP-10; Complexing agent is selected from polyvinyl alcohol or triethanolamine; Active component auxiliary agent is selected from ammonium paratungstate; Acid is 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, described regenerative system comprises the blow device, cleaning device, the first drying device and the activating apparatus that connect successively, and wherein blow device purges inactivation SCR denitration catalyst; Cleaning device cleans the catalyst after blow device purging; Described first drying device carries out drying to the catalyst after cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst.
Wherein, described blow device is above-mentioned blow device of the present invention.
Wherein, described cleaning device is above-mentioned of the present invention airtight cleaning device.
Wherein, described activating apparatus is above-mentioned activating apparatus of the present invention.
Wherein, described blow device is above-mentioned blow device of the present invention, and described cleaning device is above-mentioned of the present invention airtight cleaning device.
Wherein, described blow device is above-mentioned blow device of the present invention, and described activating apparatus is above-mentioned activating apparatus of the present invention.
Wherein, described cleaning device is above-mentioned of the present invention airtight cleaning device, and described activating apparatus is above-mentioned activating apparatus of the present invention.
Wherein, described blow device is above-mentioned blow device of the present invention, and described cleaning device is above-mentioned of the present invention airtight cleaning device, and described activating apparatus is above-mentioned activating apparatus of the present invention.
Wherein, also comprise the second drying device after described activating apparatus, described second drying device carries out drying, roasting and cooling processing to the catalyst after activated device process.
Wherein, described first drying device or the second drying device are baking oven or catalyst drying machine.
Wherein, described activating apparatus is regeneration activity load device.
As shown in Figure 1, the present invention also provides a kind of renovation process of inactivation SCR denitration catalyst, and it adopts above-mentioned regenerative system; The processing step of described renovation process comprises:
(1) inactivation SCR denitration catalyst is placed in blow device, purges;
(2) catalyst after step (1) process is placed in described cleaning device and cleans;
(3) in described first drying device, drying is carried out through the catalyst that step (2) is cleaned;
(4) be placed in activating apparatus through the catalyst that step (3) is dried to regenerate.
Wherein, described method is further comprising the steps:
(5) SCR denitration obtaining regenerating through the regenerated catalyst drying in the second drying device of step (4), roasting, cooling.
Wherein, in step (1), adopt clean air to purge, pressure is 0.4-0.6MPa, and the time is 10-20min.
Wherein, in step (2), adopt airtight cleaning device cleaning of the present invention, comprise following four steps: cleaning, semidry method cleaning, acid dip cleaning and running water are impacted in microbubble explosion.
Wherein, in step (2), first carry out microbubble explosion and impact cleaning 10-50min (preferred 20-30min), then under tiny structure environment, 10-50min (preferred 20-30min) is cleaned with ultrasonic ultrasonic delay line memory with semidry method, under ultrasound condition, clean 5-10min with acid dip again, finally wash 3-5min by flow deionized water again.
Wherein, it is under ultrasound condition that cleaning is impacted in microbubble explosion in step (2), with cleaning 10-50min (preferred 20-30min) under microbubble generator and air pump synergy, its supersonic frequency is 30KHz-40KHz, and the flow of air pump is 0.4m 3/ h-0.8m 3/ h.
Wherein, the semidry method cleaning in step (2) is: described tiny structure aspirator forms tiny structure environment in cleaning main body case inside; Ultrasonic ultrasonic delay line memory is under tiny structure environment, and take clean air as micron order mist particles cleaning fluid cleaning 10-50min (preferred 20-30min) of carrier gas, wherein the condensation rate of ultrasonic atomizer is 0.05L/min-1L/min, and flow rate of carrier gas is 0.1m 3/ h-5m 3/ h, ultrasonic atomizer frequency is 1.0MHz-4.5MHz.
The present invention impacts cleaning in conjunction with microbubble explosion, its advantage be utilize microbubble burst institute produces the surface energy impact surface of catalyst and micropore, the dust that stripping is adsorbed, thus reach cleaning performance.
Wherein, in step (3), dry 3-5h at 80-110 DEG C.
Wherein, in step (4), described activating apparatus is regeneration activity load device, is obtained the catalyst of regeneration activity liquid load by described device.
Wherein, in step (4), described activating apparatus is activating apparatus of the present invention, is obtained the catalyst of regeneration activity liquid load by described device.
Wherein, in step (5), will through catalyst dry 4-6h at 80-120 DEG C of temperature of (4) regeneration activity liquid load, then roasting 4-6h at 400-600 DEG C, cooling obtains the SCR denitration regenerated.
The present invention utilizes micron order atomization cleaning liquid to clean catalyst, farthest can recover surface and the pore structure of inactivation SCR denitration catalyst while that its advantage being and improving cleaning fluid utilization rate.
The present invention utilizes micron order to be atomized regeneration activity liquid and activates catalyst, farthest can recover surface and the pore structure of described inactivation SCR denitration catalyst while that its advantage being and improving regeneration activity liquid utilization rate.
Below by way of specific embodiment, the present invention is described in further detail, but this should be interpreted as scope of the present invention is only limitted to following example.When not departing from said method thought of the present invention, the various replacement made according to ordinary skill knowledge and customary means or change, all should be within the scope of the present invention.
If no special instructions raw materials used in following examples, be all commercially can purchase available product well known by persons skilled in the art.
The regeneration activity liquid used in following embodiment is the existing active liquid for SCR denitration regeneration in prior art, is made up of bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, active component auxiliary agent, acid and deionized water.Its formula and consumption can configure according to actual conditions.Wherein, bleeding agent is selected from penetrating agent JFC; Surfactant is selected from OP-10; Complexing agent is selected from polyvinyl alcohol or triethanolamine; Active component auxiliary agent is selected from ammonium paratungstate; Acid is one or more in oxalic acid, acetic acid or carbonic acid.
Embodiment 1-1
Realize through the method and system shown in Fig. 1-5 that denitration activity reduces to 18Nm/h, specific area reduces to 41.2m 2the regeneration process of the catalyst (being designated as decaying catalyst A) of/g:
(1) decaying catalyst A is placed in the blow device shock wave soot blower shown in Fig. 2 to purge, shock-wave ash blowing number of times be 7 times (wherein, middle part both sides blow ash 4 times, both sides, top blow ash 3 times), blow grey dead angle few, obstinate dust can be dispelled out, and then with pressure be 0.55MPa clean air purge 20min;
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 22min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.6m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.3L/min, and flow rate of carrier gas is 2.5m then under tiny structure environment, to clean 26min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 2.5MHz), then 6min is cleaned with acid dip under ultrasound condition, finally wash 4.5min by flow deionized water again;
(3) by catalyst cleaned to (2) 90 DEG C of dry 3h in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.3L/min, and flow rate of carrier gas is 2.5m 3/ h, ultrasonic ultrasonic delay line memory frequency is 2.5MHz) regenerate 3h;
(5) by the catalyst through the load of regeneration activity liquid dry 4h, then roasting 4.5h at 450 DEG C at 105 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test denitration efficiency and detect its specific area, regenerated outcome is as following table 1-1:
Table 1-1
Embodiment 1-2
Realize through the method and system shown in Fig. 1-5 that denitration activity reduces to 18Nm/h, specific area reduces to 41.2m 2the regeneration process of the catalyst (being designated as decaying catalyst A) of/g:
(1) decaying catalyst A is placed in the blow device shock wave soot blower shown in Fig. 1 to purge, shock-wave ash blowing number of times be 7 times (wherein, middle part both sides blow ash 4 times, both sides, top blow ash 3 times), and then with pressure be 0.55MPa clean air purging 20min;
(2) catalyst after (1) being processed is placed in cleaning device ultrasonic cleaning 20-50min;
(3) by catalyst cleaned to (2) 90 DEG C of dry 3h in the first drying device;
(4) catalyst dried to (3) is placed in known active device, with regeneration activity liquid regeneration 3h;
(5) by the catalyst through the load of regeneration activity liquid dry 4h, then roasting 4.5h at 450 DEG C at 105 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test denitration efficiency and detect its specific area, regenerated outcome is as following table 1-2:
Table 1-2
Embodiment 2
Realize through the method and system shown in Fig. 1-5 that denitration activity reduces to 25Nm/h, specific area reduces to 37.8m 2the regeneration process of the catalyst (being designated as decaying catalyst B) of/g:
(1) decaying catalyst B is placed in the blow device shock wave soot blower shown in Fig. 2 to purge, shock-wave ash blowing number of times be 8 times (wherein, middle part both sides blow ash 4 times, both sides, top blow ash 4 times), blow grey dead angle few, obstinate dust can be dispelled out, and then with pressure be 0.45MPa clean air purge 15min;
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 20min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.5m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.1L/min, and flow rate of carrier gas is 1.5m then under tiny structure environment, to clean 25min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 4.0MHz), then 7min is washed with acid dip under ultrasound condition, finally washing 3.5min by flow deionized water;
(3) by catalyst cleaned to (2) dry 3h at 110 DEG C in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.8L/min, and flow rate of carrier gas is 2.5m 3/ h, ultrasonic ultrasonic delay line memory frequency is 2MHz) regenerate 2.5h;
(5) by the catalyst through the load of regeneration activity liquid dry 4.5h, then roasting 4h at 550 DEG C at 100 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test regenerated catalyst performance and detect its specific area, regenerated outcome is as following table 2:
Table 2
Embodiment 3-1
Realize through the method and system shown in Fig. 1-5 that denitration activity reduces to 20Nm/h, specific area reduces to 45.4m 2the regeneration process of the catalyst (being designated as decaying catalyst C) of/g:
(1) decaying catalyst C is placed in blow device shock wave soot blower shown in Fig. 2 to purge, shock-wave ash blowing number of times be 10 times (wherein, both sides, middle part blow ash 5 times, both sides, top blow ash 5 times);
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 20min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.7m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.9L/min, and flow rate of carrier gas is 4.5m then under tiny structure environment, to clean 20min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 1.0MHz), then 10min is cleaned with acid dip under ultrasound condition, finally washing 5min by flow deionized water;
(3) by catalyst cleaned to (2) dry 5h at 100 DEG C in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, and flow rate of carrier gas is 2m 3/ h, ultrasonic ultrasonic delay line memory frequency is 3MHz) regenerate 2h;
(5) by the catalyst through the load of regeneration activity liquid dry 5h, then roasting 4h at 500 DEG C at 110 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test regenerates denitrating catalyst performance and detects its specific area, and regenerated outcome is as following table 3-1:
Table 3-1
Embodiment 3-2
Realize through the method and system shown in Fig. 1-5 that denitration activity reduces to 20Nm/h, specific area reduces to 45.4m 2the regeneration process of the catalyst (being designated as decaying catalyst C) of/g:
(1) decaying catalyst C is placed in the clean air purging 15min that blow device pressure is 0.4MPa;
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 20min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.7m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.9L/min, and flow rate of carrier gas is 4.5m then under tiny structure environment, to clean 20min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 1.0MHz), then 10min is cleaned with acid dip under ultrasound condition, finally washing 5min by flow deionized water;
(3) by catalyst cleaned to (2) dry 5h at 100 DEG C in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, and flow rate of carrier gas is 2m 3/ h, ultrasonic ultrasonic delay line memory frequency is 3MHz) regenerate 2h;
(5) by the catalyst through the load of regeneration activity liquid dry 5h, then roasting 4h at 500 DEG C at 110 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test regenerates denitrating catalyst performance and detects its specific area, and regenerated outcome is as following table 3-2:
Table 3-2
Embodiment 3-3
Realize through the method and system shown in Fig. 1-5 that denitration activity reduces to 20Nm/h, specific area reduces to 45.4m 2the regeneration process of the catalyst (being designated as decaying catalyst C) of/g:
(1) decaying catalyst C is placed in the blow device shock wave soot blower shown in Fig. 2 to purge, shock-wave ash blowing number of times be 10 times (wherein, middle part both sides blow ash 5 times, both sides, top blow ash 5 times), and then with pressure be 0.4MPa clean air purging 15min;
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 20min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.7m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.9L/min, and flow rate of carrier gas is 4.5m then under tiny structure environment, to clean 20min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 1.0MHz), then 10min is cleaned with acid dip under ultrasound condition, finally washing 5min by flow deionized water;
(3) by catalyst cleaned to (2) dry 5h at 100 DEG C in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, and flow rate of carrier gas is 2m 3/ h, ultrasonic ultrasonic delay line memory frequency is 3MHz) regenerate 2h;
(5) by the catalyst through the load of regeneration activity liquid dry 5h, then roasting 4h at 500 DEG C at 110 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test regenerates denitrating catalyst performance and detects its specific area, and regenerated outcome is as following table 3-3:
Table 3-3
Embodiment 4
Realize through the method and system shown in Fig. 1-2,4-5 that denitration activity reduces to 18Nm/h, specific area reduces to 41.2m 2the regeneration process of the catalyst (being designated as decaying catalyst A) of/g:
(1) decaying catalyst A is placed in the blow device shock wave soot blower shown in Fig. 2 to purge, shock-wave ash blowing number of times be 7 times (wherein, middle part both sides blow ash 4 times, both sides, top blow ash 3 times), and then with pressure be 0.55MPa clean air purging 20min;
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 22min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.6m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.3L/min, and flow rate of carrier gas is 2.5m then under tiny structure environment, to clean 26min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 2.5MHz), then 6min is cleaned with acid dip under ultrasound condition, finally washing 4.5min by flow deionized water;
(3) by catalyst cleaned to (2) 90 DEG C of dry 3h in the first drying device;
(4) catalyst dried to (3) is placed in known active device, with regeneration activity liquid regeneration 3h;
(5) by the catalyst through the load of regeneration activity liquid dry 4h, then roasting 4.5h at 450 DEG C at 105 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test denitration efficiency and detect its specific area, regenerated outcome is as following table 4:
Table 4
Embodiment 5
Realize through the method and system shown in Fig. 1-3,5 that denitration activity reduces to 25Nm/h, specific area reduces to 37.8m 2the regeneration process of the catalyst (being designated as decaying catalyst B) of/g:
(1) decaying catalyst B is placed in the clean air purging 15min that purging pond pressure is 0.45MPa;
(2) catalyst after (1) being processed is placed in the airtight cleaning device shown in Fig. 3, and with microbubble explosion impact ablution cleaning 20min, (wherein, supersonic frequency is 35KHz, and the flow of air pump is 0.5m 3/ h), (wherein, the condensation rate of ultrasonic ultrasonic delay line memory is 0.1L/min, and flow rate of carrier gas is 1.5m then under tiny structure environment, to clean 25min with ultrasonic ultrasonic delay line memory with semidry method 3/ h, ultrasonic ultrasonic delay line memory frequency is 4.0MHz), then 7min is washed with acid dip under ultrasound condition, finally washing 3.5min by flow deionized water;
(3) by catalyst cleaned to (2) dry 3h at 110 DEG C in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.8L/min, and flow rate of carrier gas is 2.5m 3/ h, ultrasonic ultrasonic delay line memory frequency is 2MHz) regenerate 2.5h;
(5) by the catalyst through the load of regeneration activity liquid dry 4.5h, then roasting 4h at 550 DEG C at 100 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test regenerated catalyst performance and detect its specific area, regenerated outcome is as following table 5:
Table 5
Embodiment 6
Realize through the method and system shown in Fig. 1,3-5 that denitration activity reduces to 20Nm/h, specific area reduces to 45.4m 2the regeneration process of the catalyst (being designated as decaying catalyst C) of/g:
(1) decaying catalyst C is placed in the blow device shock wave soot blower shown in Fig. 2 to purge, shock-wave ash blowing number of times be 10 times (wherein, middle part both sides blow ash 5 times, both sides, top blow ash 5 times), and then with pressure be 0.4MPa clean air purging 15min;
(2) catalyst after (1) being processed is placed in cleaning device ultrasonic cleaning 20-50min;
(3) by catalyst cleaned to (2) dry 5h at 100 DEG C in the first drying device;
(4) catalyst dried to (3) is placed in the activating apparatus shown in Fig. 4, regeneration activity liquid ultrasonic spray regeneration activity liquid is atomized (wherein with semidry method micron order, the condensation rate of ultrasonic ultrasonic delay line memory is 0.5L/min, and flow rate of carrier gas is 2m 3/ h, ultrasonic ultrasonic delay line memory frequency is 3MHz) regenerate 2h;
(5) by the catalyst through the load of regeneration activity liquid dry 5h, then roasting 4h at 500 DEG C at 110 DEG C of temperature in the second drying device, cooling obtains the SCR denitration regenerated.
SCR denitration after regeneration process is placed in SCR denitration activity test unit, and under simulated flue gas, test regenerates denitrating catalyst performance and detects its specific area, and regenerated outcome is as following table 6:
Table 6

Claims (10)

1. a blow device for inactivation SCR denitration catalyst, is characterized in that, this blow device comprises purging main body case, air compressor machine, rotary air blowing device, shock wave soot blower and shock wave soot blower control device; Described rotary air blowing device is positioned at and purges the top of main body case inside, and by pipeline be positioned at the air compressor machine purging main body case outside and be connected; Described shock wave soot blower is for removing the dust stratification of inactivation SCR denitration catalyst, and be positioned at the both sides purging main body case inside, described shock wave soot blower is controlled by shock wave soot blower control device, and described shock wave soot blower is also connected with above-mentioned air compressor machine by pipeline.
2. blow device according to claim 1, it is characterized in that, described shock wave soot blower is n, n is more than or equal to 1, this n shock wave soot blower respectively by pipeline P1 ..., Pn is connected with a total pipeline P0, described pipeline P1 ..., Pn is respectively arranged with a valve (being such as air inlet stop valve), described shock wave soot blower is connected with described air compressor machine by described total pipeline P0; Described shock wave soot blower is controlled by same shock wave soot blower control device, and every platform shock wave soot blower realizes starting by the different control button on described control device, carries out shock-wave ash blowing.
Preferably, the quantity n of described shock wave soot blower can determine according to actual conditions, as 2-8, and preferred 4-6.Preferably, described shock wave soot blower is set as four, is separately positioned on the both sides, middle part and both sides, top that purge main body case inside.
Preferably, the pipeline be connected with air compressor machine at rotary air blowing device arranges persevering airflow apparatus.Preferably, stop valve, air inlet adjustment valve and Pressure gauge is also provided with.
Preferably, the bottom of described purging main body case inside is provided with flue-dust retainer, the ash hole be connected with described flue-dust retainer is provided with at the bottom half purging main body case, described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure, and the surface dirt of described inactivation SCR denitration catalyst automatically falls into flue-dust retainer after purging.
3. a blowing method for inactivation SCR denitration catalyst, is characterized in that, described method adopts the blow device described in claim 1 or 2, and described blowing method comprises the following steps:
Inactivation SCR denitration catalyst is placed in (such as described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure) in blow device, start air compressor machine, open the air inlet stop valve entered on the pipeline of shock wave soot blower, regulate the pressure of shock wave soot blower to (such as 0.8-1.2MPa) after suitable force value, purge described inactivation SCR denitration catalyst by shock wave soot blower control device startup shock wave soot blower; After shock-wave ash blowing terminates, close shock wave soot blower, close the air inlet stop valve of shock wave soot blower simultaneously; Open the air inlet adjustment valve of rotary air blowing device, (such as 0.4-0.6MPa) after the pressure of rotary air blowing device to suitable force value is regulated with air compressor machine, described inactivation SCR denitration catalyst is purged by rotary air blowing device, flying dust is collected in flue-dust retainer, and is discharged by ash hole.
Preferably, comprise four shock wave soot blowers, start shock wave soot blower by shock wave soot blower control device and purge the step of described inactivation SCR denitration catalyst specifically: the soot blower first being started both sides, middle part by shock wave soot blower control device is purged 2-5 time, the shock wave soot blower restarting both sides, top purges 3-5 time.
Preferably, describedly described inactivation SCR denitration catalyst 5-10min is purged by rotary air blowing device.
4. the activating apparatus of an inactivation SCR denitration catalyst, it is characterized in that, this activating apparatus comprises regeneration main body case, ultrasonic ultrasonic delay line memory, catalyst rotary turnplate and tiny structure aspirator, ultrasonic ultrasonic delay line memory and catalyst rotary turnplate are arranged on the box house of regeneration main body case, tiny structure aspirator is arranged on the casing of regeneration main body case, wherein ultrasonic ultrasonic delay line memory is arranged on the top of regeneration main body case box house, is provided with ultrasonic atomizatio nozzle for liquid below ultrasonic ultrasonic delay line memory; Catalyst rotary turnplate is positioned at below ultrasonic atomizatio nozzle for liquid; The casing side of regeneration main body case is provided with regeneration liquid waste outlet.
5. activating apparatus according to claim 4, is characterized in that, during work, inactivation SCR denitration catalyst to be activated is placed in above catalyst rotary turnplate, and under the driving of motor, catalyst rotary turnplate drives described catalyst to rotate.
Preferably, described tiny structure aspirator forms tiny structure environment in regeneration main body case inside; Ultrasonic ultrasonic delay line memory sprays with clean air the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas under tiny structure environment to described catalyst by ultrasonic atomizatio nozzle for liquid, with catalyst described in semidry method regeneration activating.
Preferably, described regeneration activity liquid is made up of bleeding agent, surfactant, complexing agent, regeneration activity composition ammonium metavanadate, active component auxiliary agent, acid and deionized water.Its formula and consumption can configure according to actual conditions.Wherein, bleeding agent is selected from penetrating agent JFC; Surfactant is selected from OP-10; Complexing agent is selected from polyvinyl alcohol or triethanolamine; Active component auxiliary agent is selected from ammonium paratungstate; Acid is one or more in oxalic acid, acetic acid or carbonic acid.
6. the activation method of an inactivation SCR denitration catalyst, it adopts the activating apparatus described in claim 4 or 5, its processing step comprises: above catalyst rotary turnplate inactivation SCR denitration catalyst to be activated being placed in described activating apparatus, the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas is sprayed with clean air to described catalyst by ultrasonic atomizatio nozzle for liquid with ultrasonic ultrasonic delay line memory, with catalyst described in semidry method regeneration activating under tiny structure environment.
Preferably, the time of regeneration activating is 1-5h, preferred 2-3h.Specifically, described semidry method regeneration activating is: described tiny structure aspirator forms tiny structure environment in regeneration main body case inside; Ultrasonic ultrasonic delay line memory is under tiny structure environment, sprayed with clean air the micron order mist particles regeneration activity liquid of the ultrasonic atomization being carrier gas to described catalyst by ultrasonic atomizatio nozzle for liquid, activation 10-50min, wherein the condensation rate of ultrasonic ultrasonic delay line memory is 0.05L/min-1L/min, and flow rate of carrier gas is 0.1m 3/ h-5m 3/ h, ultrasonic ultrasonic delay line memory frequency is 1.0MHz-4.5MHz.
7. a regenerative system for inactivation SCR denitration catalyst, described regenerative system comprises the blow device, cleaning device, the first drying device and the activating apparatus that connect successively, and wherein blow device purges inactivation SCR denitration catalyst; Cleaning device cleans the catalyst after blow device purging; Described first drying device carries out drying to the catalyst after cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst;
Wherein, described blow device is the blow device described in claim 1 or 2.
8. a renovation process for inactivation SCR denitration catalyst, it adopts the regenerative system of inactivation SCR denitration catalyst according to claim 7, and the method comprises the following steps:
(1) inactivation SCR denitration catalyst to be placed in blow device (such as described inactivation SCR denitration catalyst is placed in described flue-dust retainer top by net-shaped steel structure) and to carry out following steps: starting air compressor machine, open the air inlet stop valve entered on the pipeline of shock wave soot blower, regulate the pressure of shock wave soot blower to (such as 0.8-1.2MPa) after suitable force value, purge described inactivation SCR denitration catalyst by shock wave soot blower control device startup shock wave soot blower; After shock-wave ash blowing terminates, close shock wave soot blower, close the air inlet stop valve of shock wave soot blower simultaneously; Open rotary air blowing device air inlet adjustment valve, (such as 0.4-0.6MPa) after the pressure of rotary air blowing device to suitable force value is regulated with air compressor machine, described inactivation SCR denitration catalyst is purged by rotary air blowing device, flying dust is collected in flue-dust retainer, and is discharged by ash hole.
(2) catalyst after step (1) process is placed in cleaning device and cleans;
(3) in described first drying device, drying is carried out through the catalyst that step (2) is cleaned;
(4) activating apparatus regeneration activating is placed in through the catalyst that step (3) is dried.
Preferably, in described step (1), comprise four shock wave soot blowers, start shock wave soot blower by shock wave soot blower control device and purge the step of described inactivation SCR denitration catalyst specifically: the soot blower first being started both sides, middle part by shock wave soot blower control device is purged 2-5 time, the shock wave soot blower restarting both sides, top purges 3-5 time.
Preferably, in described step (1), describedly purge described inactivation SCR denitration catalyst 5-10min by rotary air blowing device.
9. a regenerative system for inactivation SCR denitration catalyst, described regenerative system comprises the blow device, cleaning device, the first drying device and the activating apparatus that connect successively, and wherein blow device purges inactivation SCR denitration catalyst; Cleaning device cleans the catalyst after blow device purging; Described first drying device carries out drying to the catalyst after cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst;
Wherein, described activating apparatus is the activating apparatus described in claim 4 or 5.
Preferably, described blow device is the blow device of claim 1 or 2, and described activating apparatus is the activating apparatus described in claim 4 or 5.
Further preferably, the cleaning device in above-mentioned regenerative system is airtight cleaning device, and this airtight cleaning device comprises cleaning main body case, ultrasonic ultrasonic delay line memory, supersonic cleaning machine, microbubble generator, catalyst wash rotating disk and tiny structure aspirator; Wherein, cleaning main body case interior separation is become upper and lower by ultrasonic wave conductive plate, and this ultrasonic ultrasonic delay line memory is arranged on the upper area on cleaning main body case top, is provided with ultrasonic atomizatio nozzle for liquid below ultrasonic ultrasonic delay line memory; Catalyst wash rotating disk is for placing described catalyst, and catalyst wash rotating disk and described catalyst are all positioned at below ultrasonic atomizatio nozzle for liquid; Tiny structure aspirator is positioned at above catalyst wash rotating disk and described catalyst; Below described catalyst wash rotating disk, motor is installed; Microbubble generator associating air pump produces microbubble, by pipeline, microbubble is incorporated into the position of cleaning main body case top higher than described catalyst from cleaning main body case bottom via cleaning main body case outside, be incorporated near motor by pipeline again, for cleaning Regenrable catalyzed dose; The casing side on cleaning main body case top is provided with sour entrance, and opposite side is provided with liquid outlet and deionized water entrance, or deionized water entrance and sour entrance are in the same side, and liquid outlet is at opposite side; Acid entrance and deionized water entrance are lower than the position of described catalyst, and liquid outlet is positioned at the bottom on cleaning main body case top.
10. a renovation process for inactivation SCR denitration catalyst, it adopts the regenerative system of inactivation SCR denitration catalyst according to claim 9, and the method comprises the following steps:
(1) inactivation SCR denitration catalyst is placed in blow device, purges;
(2) catalyst after step (1) process is placed in cleaning device, cleans;
(3) in described first drying device, drying is carried out through the catalyst that step (2) is cleaned;
(4) activating apparatus regeneration activating is placed in through the catalyst that step (3) is dried.
Preferably, the purging of step (1) adopts blowing method according to claim 3.
Further preferably, the activation of step (4) adopts activation method according to claim 6.
Further preferably, the cleaning method of step (2) is: it adopts the airtight cleaning device described in claim 9, its processing step comprises: described inactivation SCR denitration catalyst be placed on the catalyst wash rotating disk of described airtight cleaning device, ablution cleaning is impacted with microbubble explosion by described microbubble generator, then clean with semidry method with ultrasonic ultrasonic delay line memory under tiny structure environment, cleaned with acid dip under ultrasound condition by described supersonic cleaning machine again, finally wash by flow deionized water again.
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)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510943164.2A CN105381716B (en) 2015-09-11 2015-12-16 A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN2015105774408 2015-09-11
CN201510577440 2015-09-11
CN201510943164.2A CN105381716B (en) 2015-09-11 2015-12-16 A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method

Publications (2)

Publication Number Publication Date
CN105381716A true CN105381716A (en) 2016-03-09
CN105381716B CN105381716B (en) 2018-03-20

Family

ID=55366414

Family Applications (5)

Application Number Title Priority Date Filing Date
CN201521052278.XU Expired - Fee Related CN205269680U (en) 2015-09-11 2015-12-16 Airtight belt cleaning device and regeneration system of inactivation SCR denitration catalyst
CN201521052416.4U Expired - Fee Related CN205269412U (en) 2015-09-11 2015-12-16 Inactivation SCR denitration catalyst sweep device
CN201510943164.2A Expired - Fee Related CN105381716B (en) 2015-09-11 2015-12-16 A kind of blow device of inactivation SCR denitration catalyst, activation device and regenerative system and corresponding method
CN201510943466.XA Expired - Fee Related CN105363500B (en) 2015-09-11 2015-12-16 The closed cleaning device and method and regenerative system and method for a kind of inactivation SCR denitration catalyst
CN201521051815.9U Expired - Fee Related CN205269679U (en) 2015-09-11 2015-12-16 Activation device of inactivation SCR denitration catalyst

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CN201521052278.XU Expired - Fee Related CN205269680U (en) 2015-09-11 2015-12-16 Airtight belt cleaning device and regeneration system of inactivation SCR denitration catalyst
CN201521052416.4U Expired - Fee Related CN205269412U (en) 2015-09-11 2015-12-16 Inactivation SCR denitration catalyst sweep device

Family Applications After (2)

Application Number Title Priority Date Filing Date
CN201510943466.XA Expired - Fee Related CN105363500B (en) 2015-09-11 2015-12-16 The closed cleaning device and method and regenerative system and method for a kind of inactivation SCR denitration catalyst
CN201521051815.9U Expired - Fee Related CN205269679U (en) 2015-09-11 2015-12-16 Activation device of inactivation SCR denitration catalyst

Country Status (1)

Country Link
CN (5) CN205269680U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107961818A (en) * 2017-12-06 2018-04-27 南京威安新材料科技有限公司 The renovation process and production equipment of flue gas SCR catalyst
CN109046023A (en) * 2018-07-12 2018-12-21 哈尔滨工程大学 A kind of SCR reactor soot blower system and method
CN109833733A (en) * 2019-03-06 2019-06-04 苏州弘维环境科技有限公司 A kind of cleaning device of low-temperature plasma exhaust-gas treatment

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205269680U (en) * 2015-09-11 2016-06-01 福建紫荆环境工程技术有限公司 Airtight belt cleaning device and regeneration system of inactivation SCR denitration catalyst
CN105921015B (en) * 2016-07-04 2019-08-09 青岛双瑞海洋环境工程股份有限公司 The soot blower system of Benitration reactor
CN106017001A (en) * 2016-07-14 2016-10-12 江苏龙净科杰催化剂再生有限公司 Drying device special for honeycomb type selective catalytic reduction (SCR) denitration catalyst regeneration
CN108057462B (en) * 2017-11-17 2020-06-30 四川大学 Regeneration method of carbon-based non-metallic desulfurizer
CN111960429B (en) * 2020-08-26 2022-07-12 万华化学集团股份有限公司 Preparation method of hierarchical porous aluminum phosphate molecular sieve catalyst, catalyst prepared by hierarchical porous aluminum phosphate molecular sieve catalyst and application of hierarchical porous aluminum phosphate molecular sieve catalyst in olefin isomerization
CN113019471B (en) * 2021-02-07 2023-05-23 铜仁市诚一环保科技有限公司 Method and equipment for cleaning denitration catalyst
CN113769583B (en) * 2021-10-08 2024-01-26 安徽元琛环保科技股份有限公司 Regeneration method of baking-free dust removal denitration ceramic filter tube
CN114367196A (en) * 2021-12-01 2022-04-19 苏州西热节能环保技术有限公司 Method for regenerating SCR denitration catalyst by online semidry method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1157410A (en) * 1997-08-19 1999-03-02 Babcock Hitachi Kk Device and method for regenerating alkali-deteriorated denitrification catalyst
CN101543793A (en) * 2008-03-26 2009-09-30 巴布科克和威尔科克斯能量产生集团公司 In-situ regeneration of a catalyst masked by calcium sulfate
CN201445960U (en) * 2009-04-29 2010-05-05 常州市肯创环境工程技术有限公司 Structure of catalyst cleaning and regenerating device
CN205269412U (en) * 2015-09-11 2016-06-01 福建紫荆环境工程技术有限公司 Inactivation SCR denitration catalyst sweep device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6929701B1 (en) * 2003-06-03 2005-08-16 Scr-Tech Llc Process for decoating a washcoat catalyst substrate
CN102658170B (en) * 2012-04-11 2014-09-03 西安交通大学 Regeneration technology of V-Ti-based honeycomb SCR denitration catalyst, and apparatus thereof
CN103071545A (en) * 2012-12-25 2013-05-01 北京国电龙源环保工程有限公司 Ultrasonic cleaning device and method for regenerating catalyst
CN203508041U (en) * 2013-09-17 2014-04-02 北京北科欧远科技有限公司 Flue gas denitrification catalyst cleaning-regeneration device
CN203971958U (en) * 2014-04-11 2014-12-03 武汉梅斯特工程技术有限公司 A kind of SCR catalyst regeneration device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1157410A (en) * 1997-08-19 1999-03-02 Babcock Hitachi Kk Device and method for regenerating alkali-deteriorated denitrification catalyst
CN101543793A (en) * 2008-03-26 2009-09-30 巴布科克和威尔科克斯能量产生集团公司 In-situ regeneration of a catalyst masked by calcium sulfate
CN201445960U (en) * 2009-04-29 2010-05-05 常州市肯创环境工程技术有限公司 Structure of catalyst cleaning and regenerating device
CN205269412U (en) * 2015-09-11 2016-06-01 福建紫荆环境工程技术有限公司 Inactivation SCR denitration catalyst sweep device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
范昊 等: "船舶SCR系统中硫酸氢铵的成因及控制方法", 《中国环境科学学会学术年会论文集》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107961818A (en) * 2017-12-06 2018-04-27 南京威安新材料科技有限公司 The renovation process and production equipment of flue gas SCR catalyst
CN109046023A (en) * 2018-07-12 2018-12-21 哈尔滨工程大学 A kind of SCR reactor soot blower system and method
CN109046023B (en) * 2018-07-12 2020-12-22 哈尔滨工程大学 SCR reactor soot blowing system and method
CN109833733A (en) * 2019-03-06 2019-06-04 苏州弘维环境科技有限公司 A kind of cleaning device of low-temperature plasma exhaust-gas treatment
CN109833733B (en) * 2019-03-06 2021-10-15 深圳市傲月光电科技有限公司 Cleaning device for low temperature plasma exhaust-gas treatment

Also Published As

Publication number Publication date
CN105381716B (en) 2018-03-20
CN105363500B (en) 2018-06-19
CN205269680U (en) 2016-06-01
CN205269412U (en) 2016-06-01
CN105363500A (en) 2016-03-02
CN205269679U (en) 2016-06-01

Similar Documents

Publication Publication Date Title
CN205269679U (en) Activation device of inactivation SCR denitration catalyst
CN103055962B (en) Selective catalystic reduction (SCR) denitration catalyst reactivation method
CN105318443A (en) Air purifier
CN206273325U (en) A kind of dust filter unit
CN106390631A (en) Dust filter
CN104707462B (en) A kind of waste gas produced in time preparing fertilizer removes ammonia and the method for dust
CN104069900B (en) A kind of cleaning method for waste denitration catalyst regeneration and device
CN203663649U (en) Dust removal device for tailored blank laser welding
CN103691248B (en) A kind of laser assembly solder dust arrester
CN218653429U (en) Waste gas collecting and treating device
CN203648552U (en) SCR (Semiconductor Control Rectifier) catalyst regeneration device
CN211864525U (en) Waste gas purification treatment device
CN109316875A (en) A kind of technique and spraying box handling coating cloud
CN110624342A (en) Filter equipment of paint spray booth waste gas
CN211261107U (en) Air purification system for silicon wafer cutting workshop
CN203842448U (en) Wet type dust remover
CN214635357U (en) Paper deacidification system with inhale fog function
CN209076340U (en) A kind of wet type three-stage dust catcher
CN201470274U (en) Wet dust collector
CN202638683U (en) Paint spray booth for furniture
KR200382729Y1 (en) Water cleaning system having a vapor generating device to enclose dust in air in a finishing process
CN215610328U (en) Safety monitoring and early warning system for production workshop
CN216023850U (en) Dust fall equipment with environmental protection function for commercial building construction
CN217367829U (en) Superoxide nanometer microbubble equipment for improving coating waste gas purification effect
CN204017853U (en) A kind of cleaning device for waste denitration catalyst regeneration

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180320

Termination date: 20191216

CF01 Termination of patent right due to non-payment of annual fee