CN105363500A - Closed cleaning device and method for inactivate SCR denitration catalyst and regeneration system and method - Google Patents
Closed cleaning device and method for inactivate SCR denitration catalyst and regeneration system and method Download PDFInfo
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Abstract
The invention relates to a closed cleaning device and method for an inactive SCR denitration catalyst and a regeneration system and method. The closed cleaning device comprises a cleaning body box, an ultrasonic atomizer, an ultrasonic washing machine, a microbubble generator, a catalyst cleaning rotary plate and a micro negative-pressure suction device. The regeneration method includes the following steps that firstly, air blowing and sweeping are carried out; secondly, the inactivative SCR denitration catalyst is flushed and processed through running water by means of the microbubble explosive burst impact cleaning method, semi-dry method cleaning and acid steeping cleaning; thirdly, drying is carried out; fourthly, regeneration and activation are conducted to obtain a regenerated denitration catalyst. Regeneration of the inactive catalyst can be achieved. Compared with the common regeneration technology, cleaning achieved through the technology is thorough. Meanwhile, the utilization rate of a cleaning solution can be greatly increased, and the surface and the porous structure of the inactive catalyst can be restored to the largest extent.
Description
Technical field
The invention belongs to catalyst regeneration techniques field, be specifically related to a kind of airtight cleaning device of inactivation SCR denitration catalyst and method and regenerative system and 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, provide a kind of economizing type, the airtight cleaning device of cleaning and all very high inactivation SCR denitration catalyst of regeneration efficiency and method and regenerative system and method.
To achieve these goals, the invention provides following technical scheme:
An airtight cleaning device for inactivation SCR denitration catalyst, 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 deionized water entrance, and opposite side is provided with liquid outlet, and sour 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.
Further, during work, Regenrable catalyzed dose is that described inactivation SCR denitration catalyst is placed in above catalyst wash rotating disk, Regenrable catalyzed dose of catalyst wash driven by rotary disc rotation under the driving of motor.
Further, described microbubble generator associating air pump produces microbubble, impacts ablution clean Regenrable catalyzed dose with microbubble explosion.
Further, described tiny structure aspirator forms tiny structure environment in cleaning main body case inside; Ultrasonic ultrasonic delay line memory sprays the cleaning fluid of ultrasonic atomization under tiny structure environment by ultrasonic atomizatio nozzle for liquid, clean Regenrable catalyzed dose with semidry method.
Further, described supersonic cleaning machine cleans Regenrable catalyzed dose with acid dip under ultrasound condition, washs Regenrable catalyzed dose by flow deionized water.
The present invention also provides following technical scheme:
A kind of cleaning method of inactivation SCR denitration catalyst, 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.
The present invention also provides following technical scheme:
A regenerative system for inactivation SCR denitration catalyst, described regenerative system comprises the blow device connected successively, above-mentioned airtight cleaning device, the first drying device and activating apparatus, and wherein blow device purges inactivation SCR denitration catalyst clean air; Airtight cleaning device carries out four step cleanings to the catalyst after blow device purging: cleaning, semidry method cleaning, acid dip cleaning and running water are impacted in microbubble explosion; Described first drying device carries out drying to the catalyst after airtight cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst.
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.
The present invention also provides following technical scheme:
A renovation process for inactivation SCR denitration catalyst, it adopts above-mentioned regenerative system; The processing step of described renovation process comprises:
(1) inactivation SCR denitration catalyst is placed in blow device (preferably purging pond) to purge with clean air;
(2) catalyst after step (1) process is placed in described airtight cleaning device, is divided into four step cleanings: cleaning, semidry method cleaning, acid dip cleaning and running water are impacted in microbubble explosion;
(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.
Wherein, described method is further comprising the steps:
(5) catalyst crossed through step (4) regeneration activating drying in the second drying device, roasting, cooling are obtained the SCR denitration regenerated.
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), 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 (5), will through catalyst dry 4-6h at 80-120 DEG C of temperature of step (4) regeneration activity liquid load, then roasting 4-6h at 400-600 DEG C, cooling obtains the SCR denitration regenerated.
The invention has the beneficial effects as follows:
The present invention relates to a kind of airtight cleaning device and method of inactivation SCR denitration catalyst, and comprise regenerative system and the method for sealing cleaning device, adopt described airtight cleaning device and method 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 general 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 decaying catalyst.
In addition, 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.
Cleaning fluid of the present invention can be atomized and reach micron order, micron order atomization cleaning liquid is utilized to clean catalyst, be a kind of semidry method cleaning way, the while that its advantage being and improving cleaning fluid utilization rate, farthest can recover surface and the pore structure of decaying catalyst.
Accompanying drawing explanation
Fig. 1 airtight cleaning device structure chart of the present invention.
The structural representation of the regenerative system of Fig. 2 inactivation SCR denitration catalyst of the present invention.
Fig. 3 process chart 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
Detailed description of the invention
Below by way of detailed description of the invention, 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.
" 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.
As shown in Figure 1, 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 workflow of aforementioned cleaning device is as shown in the some processes step in Fig. 3.During work, Regenrable catalyzed dose 6 is placed in above catalyst wash rotating disk 5, and under the driving of motor 51, catalyst wash rotating disk 5 drives Regenrable catalyzed dose 6 rotation; First combine air pump 41 by described microbubble generator 4 and produce microbubble, impact ablution with microbubble explosion and clean Regenrable catalyzed dose 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 Regenrable catalyzed dose 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 Regenrable catalyzed dose 6, flooded after with acid dip by ultrasonic wave conductive plate under ultrasound condition, discharges acid solution by liquid outlet 13; Finally open deionized water entrance 12 and pass into deionized water, described supersonic cleaning machine 3 washs Regenrable catalyzed dose 6 by flow deionized water by ultrasonic wave conductive plate under ultrasound condition, deionized water after washing is discharged by liquid outlet 13, has washed rear closedown deionized water entrance 12.
As shown in Figure 2, the regenerative system of inactivation SCR denitration catalyst of the present invention comprises the blow device connected successively, above-mentioned airtight cleaning device, the first drying device, activating apparatus and the second drying device.Composition graphs 3 is visible, and wherein, blow device purges inactivation SCR denitration catalyst clean air; Described blow device preferably purges pond.Airtight cleaning device carries out four step cleanings to the catalyst after blow device purging: cleaning, semidry method cleaning, acid dip cleaning and running water are impacted in microbubble explosion.Described first drying device carries out drying to the catalyst after airtight cleaning device cleaning.Described activating apparatus utilizes regeneration activity liquid to carry out regeneration activating process to dried catalyst.Described second drying device carries out drying, roasting, cooling to the catalyst after regeneration activating process, can obtain the SCR denitration regenerated.
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 be well known to a person skilled in the art, the existing active liquid for SCR denitration regeneration in prior art.
Fig. 3 is the process flow diagram of renovation process of the present invention, and the content below in conjunction with Fig. 1 and 2 is described this technological process and effect.
Embodiment 1
Realize through the method and system shown in Fig. 1-3 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 clean air purging 20min that purging pond pressure is 0.55MPa;
(2) catalyst after (1) being processed is placed in airtight cleaning device, 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 regeneration activity load 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:
Table 1
Embodiment 2
Realize through the method and system shown in Fig. 1-3 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 airtight cleaning device, 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 regeneration activity load device, with regeneration activity liquid regeneration 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
Realize through the method and system shown in Fig. 1-3 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 purging pond pressure is 0.4MPa;
(2) catalyst after (1) being processed is placed in airtight cleaning device, 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 regeneration activity load device, with regeneration activity liquid regeneration 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:
Table 3
Claims (10)
1. an airtight cleaning device for inactivation SCR denitration catalyst, is characterized in that, 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 deionized water entrance, and opposite side is provided with liquid outlet, and sour 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.
2. airtight cleaning device according to claim 1, it is characterized in that, during work, Regenrable catalyzed dose is that described inactivation SCR denitration catalyst is placed in above catalyst wash rotating disk, Regenrable catalyzed dose of catalyst wash driven by rotary disc rotation under the driving of motor.
Preferably, described microbubble generator associating air pump produces microbubble, impacts ablution clean Regenrable catalyzed dose with microbubble explosion.
Preferably, described tiny structure aspirator forms tiny structure environment in cleaning main body case inside; Ultrasonic ultrasonic delay line memory sprays ultrasonic atomization liquid by ultrasonic atomizatio nozzle for liquid under tiny structure environment, cleans Regenrable catalyzed dose with semidry method.
Preferably, described supersonic cleaning machine cleans Regenrable catalyzed dose with acid dip under ultrasound condition, washs Regenrable catalyzed dose by flow deionized water.
3. the cleaning method of an inactivation SCR denitration catalyst, it is characterized in that, described method adopts the airtight cleaning device described in claim 1 or 2, 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.
4. cleaning method according to claim 3, it is characterized in that, first carry out microbubble explosion and impact cleaning 10-50min, then under tiny structure environment, 10-50min 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.
5. cleaning method according to claim 4, is characterized in that, 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.
Preferably, 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.
6. the regenerative system of an inactivation SCR denitration catalyst, it is characterized in that, described regenerative system comprises the blow device, airtight cleaning device, the first drying device and the activating apparatus described in claim 1 or 2 that connect successively, and wherein blow device purges inactivation SCR denitration catalyst clean air; Airtight cleaning device carries out four step cleanings to the catalyst after blow device purging: cleaning, semidry method cleaning, acid dip cleaning and running water are impacted in microbubble explosion; Described first drying device carries out drying to the catalyst after airtight cleaning device cleaning; Described activating apparatus carries out regeneration activating process to dried catalyst.
7. regenerative system according to claim 6, is characterized in that, also comprises the second drying device after described activating apparatus, and described second drying device carries out drying, roasting and cooling processing to the catalyst after activated device process.
Preferably, described first drying device or the second drying device are baking oven or catalyst drying machine.
Preferably, described activating apparatus is regeneration activity load device.
8. a renovation process for inactivation SCR denitration catalyst, is characterized in that, described renovation process adopts the regenerative system described in claim 6 or 7; The processing step of described renovation process comprises:
(1) inactivation SCR denitration catalyst is placed in blow device (preferably purging pond) to purge with clean air;
(2) catalyst after step (1) process is placed in described airtight cleaning device, is divided into four step cleanings: cleaning, semidry method cleaning, acid dip cleaning and running water are impacted in microbubble explosion;
(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.
9. renovation process according to claim 8, is characterized in that, 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.
10. renovation process according to claim 8 or claim 9, is characterized in that, in step (1), adopt clean air to purge, pressure is 0.4-0.6MPa, and the time is 10-20min.
Preferably, 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.
Preferably, 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.
Preferably, 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.
Preferably, in step (3), dry 3-5h at 80-110 DEG C.
Preferably, in step (4), described activating apparatus is regeneration activity load device, is obtained the catalyst of regeneration activity liquid load by described device.
Preferably, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510943466.XA 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 |
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|---|---|---|---|
| CN201510577440 | 2015-09-11 | ||
| CN2015105774408 | 2015-09-11 | ||
| CN201510943466.XA 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 |
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| Publication Number | Publication Date |
|---|---|
| CN105363500A true CN105363500A (en) | 2016-03-02 |
| CN105363500B CN105363500B (en) | 2018-06-19 |
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| 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 |
| 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 |
| 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 |
| CN201521051815.9U Expired - Fee Related CN205269679U (en) | 2015-09-11 | 2015-12-16 | Activation device of inactivation SCR denitration catalyst |
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| 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 |
| 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 |
| CN201521051815.9U Expired - Fee Related CN205269679U (en) | 2015-09-11 | 2015-12-16 | Activation device of inactivation SCR denitration catalyst |
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Cited By (5)
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| 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 |
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| CN111960429A (en) * | 2020-08-26 | 2020-11-20 | 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 |
| CN113019471A (en) * | 2021-02-07 | 2021-06-25 | 铜仁市诚一环保科技有限公司 | Cleaning method and equipment for denitration catalyst |
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| CN105363500B (en) * | 2015-09-11 | 2018-06-19 | 福建紫荆环境工程技术有限公司 | The closed cleaning device and method and regenerative system and method for a kind of inactivation SCR denitration catalyst |
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| CN108057462B (en) * | 2017-11-17 | 2020-06-30 | 四川大学 | Regeneration method of carbon-based non-metallic desulfurizer |
| CN111960429A (en) * | 2020-08-26 | 2020-11-20 | 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 |
| 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 |
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| 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 |
| CN113769583A (en) * | 2021-10-08 | 2021-12-10 | 安徽元琛环保科技股份有限公司 | Regeneration method of baking-free dedusting denitration ceramic filter tube |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105363500B (en) | 2018-06-19 |
| CN205269412U (en) | 2016-06-01 |
| CN105381716A (en) | 2016-03-09 |
| CN205269680U (en) | 2016-06-01 |
| CN105381716B (en) | 2018-03-20 |
| CN205269679U (en) | 2016-06-01 |
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