CN111589474A - Regeneration method of inactivated corrugated plate denitration catalyst - Google Patents
Regeneration method of inactivated corrugated plate denitration catalyst Download PDFInfo
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Abstract
The invention belongs to the technical field of catalyst regeneration, and relates to a regeneration method of an inactivated corrugated plate denitration catalyst, which comprises the following steps: preprocessing, namely performing soot blowing, cleaning and drying treatment on the deactivated corrugated plate denitration catalyst module; adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore-complexing, and removing deposited toxic substances; adding a reinforcer to the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the deactivated corrugated plate denitration catalyst module; adding active liquid into the strengthened deactivated corrugated plate denitration catalyst module for activation treatment; and drying and calcining the activated corrugated plate denitration catalyst module. According to the invention, by adopting the regeneration process of soot blowing, cleaning, drying, pore re-forming, strengthening, activating and drying and calcining, the regeneration of the deactivated corrugated plate denitration catalyst module is realized, the loss of the strength and performance of the catalyst is avoided, the catalyst can be recycled after regeneration, and the denitration efficiency is ensured.
Description
Technical Field
The invention belongs to the technical field of catalyst regeneration, and relates to a regeneration method of an inactivated corrugated plate denitration catalyst.
Background
The SCR denitration technology is a flue gas denitration technology widely applied in the world at present, and the catalyst is the most important part in the whole system. The service life of the catalyst is 24000 hours, so that the catalyst may be deactivated and needs to be replaced after 3 to 5 years of operation. In addition, the waste vanadium-titanium-based denitration catalyst is listed in the name of dangerous waste by the national ministry of environmental protection. This means that the enterprise not only needs to purchase new catalyst, but also expends money for disposing of spent catalyst. However, the regenerated deactivated catalyst can be put into use again after being cleaned and supplemented with active ingredients, and the regeneration cost is only one third of the cost of newly purchased catalyst, so that it is very necessary to regenerate and utilize the regenerated denitration catalyst.
The commonly used denitration catalyst is divided into three types, namely a honeycomb type catalyst, a flat plate type catalyst and a corrugated plate type catalyst, the market share of the corrugated plate type catalyst is increased in recent years, and the problem that the catalyst needs to be replaced or regenerated after being used for 3 years is also faced. At present, most of related regeneration processes relate to regeneration of honeycomb denitration catalysts, and fewer regeneration methods relate to regeneration of deactivated corrugated plate denitration catalysts. The catalyst may be deactivated by various reasons, and the deactivation includes reversible deactivation and irreversible deactivation. The reversibly inactivated catalyst should be preferentially recycled to reduce environmental pollution and reduce the operation cost of enterprises, otherwise, the denitration catalyst is used as a dangerous waste, and if the denitration catalyst is not properly disposed, the environmental pollution is serious.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a regeneration method of an inactivated corrugated plate denitration catalyst, so that the catalyst can be recycled after regeneration, and the denitration efficiency is ensured.
The purpose of the invention is realized by the following technical scheme:
the regeneration method of the deactivated corrugated plate denitration catalyst comprises the following steps:
1) preprocessing, namely performing soot blowing, cleaning and drying treatment on the deactivated corrugated plate denitration catalyst module;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore-complexing, and removing deposited toxic substances;
3) adding a reinforcer to the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the deactivated corrugated plate denitration catalyst module;
4) adding active liquid into the strengthened deactivated corrugated plate denitration catalyst module for activation treatment;
5) and drying and calcining the activated corrugated plate denitration catalyst module.
Further, the step 1) specifically comprises:
1.1) blowing ash, namely putting an inactivated corrugated plate denitration catalyst module into an ash blowing system, and intermittently blowing by using compressed air, wherein the interval time is 5-60 min each time, the pressure of the compressed air is 0.3-1 Mpa, and the flow is 30-100 Nm3/min；
1.2) cleaning, namely further cleaning fly ash on the surface and in pore channels of the deactivated corrugated plate denitration catalyst module subjected to soot blowing treatment by using fresh water, wherein the cleaning mode adopts spray type cleaning, and the cleaning time is 0.5-3 h;
1.3) drying, and draining the cleaned deactivated corrugated plate denitration catalyst module by gravity.
Further, the pressure of the compressed air in the step 1.1) is 0.6Mpa, and the flow rate is 60Nm3/min。
Further, the pore-complexing agent in the step 2) comprises dimethyl sulfoxide or hexamethylenetetramine, and the mass concentration of the pore-complexing agent is 0.1-1%; the secondary hole is operated at normal temperature and normal pressure, and water is drained by means of gravity after the secondary hole is completed.
Further, the mass concentration of the pore-complexing agent is 0.15%.
Further, the reinforcer in the step 3) comprises alkylphenol polyoxyethylene or fatty alcohol polyoxyethylene ether, and the mass concentration of the reinforcer is 0.1-1%; the strengthening is operated at normal temperature and normal pressure, and the water is drained by means of gravity after soaking.
Further, the active solution in the step 4) is an aqueous solution prepared by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium in the active solution is 0.5-2.5%, and the content of tungsten in the active solution is 3-10%.
Further, draining water by means of gravity after the activation treatment in the step 4) is completed.
Further, the step 5) specifically comprises:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 50-80 ℃ for 3-10 h;
5.2) calcining, wherein after drying operation is finished, the temperature of the drying kiln is gradually increased to 260-350 ℃, and the calcining time is 3-10 h.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: according to the unique appearance structure and physicochemical property characteristics of the corrugated plate denitration catalyst, the regeneration of the deactivated corrugated plate denitration catalyst module is realized by adopting the regeneration process of soot blowing, cleaning, drying, pore recombination, strengthening, activating and drying and calcining, the loss of the strength and the performance of the catalyst is avoided, the catalyst can be recycled after regeneration, and the denitration efficiency is ensured.
Detailed Description
The present invention is described in further detail below with reference to examples:
example (b):
the embodiment provides a regeneration method of an inactivated corrugated plate denitration catalyst, which comprises the following steps:
1) preprocessing, namely performing soot blowing, cleaning and drying treatment on the deactivated corrugated plate denitration catalyst module;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore complexing, and removing deposited toxic substances;
3) adding a reinforcer on the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the deactivated corrugated plate denitration catalyst module;
4) adding active liquid into the strengthened deactivated corrugated plate denitration catalyst module for activation treatment;
5) and drying and calcining the activated corrugated plate denitration catalyst module.
Further, the step 1) specifically includes:
1.1) blowing ash, namely putting an inactivated corrugated plate denitration catalyst module into an ash blowing system, and intermittently blowing by using compressed air, wherein the interval time is 5-60 min each time, the pressure of the compressed air is 0.3-1 Mpa, and the flow is 30-100 Nm3/min；
1.2) cleaning, namely further cleaning fly ash on the surface and in pore channels of the deactivated corrugated plate denitration catalyst module subjected to soot blowing treatment by using fresh water, wherein the cleaning mode adopts spray type cleaning, and the cleaning time is 0.5-3 h;
1.3) drying, and draining the cleaned deactivated corrugated plate denitration catalyst module by gravity.
Further, the pore-forming agent in the step 2) comprises dimethyl sulfoxide or hexamethylenetetramine, and the mass concentration of the pore-forming agent is 0.1-1%; the above-mentioned compound hole is operated under normal temperature and normal pressure, rely on gravity to drain after the hole is finished again.
Further, the enhancer in the step 3) comprises alkylphenol polyoxyethylene ether or fatty alcohol polyoxyethylene ether, and the mass concentration of the enhancer is 0.1-1%; the strengthening is operated at normal temperature and normal pressure, and water is drained by means of gravity after soaking.
Further, the active solution in the step 4) is an aqueous solution prepared by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium is 0.5-2.5%, and the content of tungsten is 3-10%.
Further, draining water by gravity after the activation treatment in the step 4).
Further, the step 5) specifically includes:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 50-80 ℃ for 3-10 h;
5.2) calcining, wherein after drying operation is finished, the temperature of the drying kiln is gradually increased to 260-350 ℃, and the calcining time is 3-10 h.
Example 1:
the embodiment provides a regeneration method of a deactivated corrugated plate denitration catalyst, which comprises the following steps,
1) pretreatment:
1.1) blowing ash, namely putting the deactivated corrugated plate denitration catalyst module into an ash blowing system, loosening fly ash on the surface of the catalyst and in a pore channel by utilizing the physical operation of compressed air, blowing floating dust on the surface of the deactivated catalyst and accumulated ash in the pore channel out, wherein the use pressure is 0.3Mpa, and the flow rate is 30Nm3Blowing is carried out by compressed gas per min, soot blowing is carried out intermittently, the interval time of each time is 30min, the catalyst module is generally vertically and fully distributed in a box body, and blown fly ash is collected by a bag-type dust collector;
1.2) ash removal and cleaning, wherein a small amount of fly ash is remained in the deactivated corrugated plate denitration catalyst module subjected to blowing and dust collection, the fly ash on the surface and in the pore channel of the catalyst is further cleaned by fresh water in a spraying mode, the cleaning time is 0.5h, and finally, water is drained by means of gravity;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore complexing, and removing deposited toxic substances:
adding a pore-complexing agent for treatment to remove toxic substances deposited in micropores of the catalyst module, wherein the main component of the pore-complexing agent is dimethyl sulfoxide, the prepared mass concentration is 0.15%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after soaking;
3) adding a reinforcer on the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the catalyst:
the surface activity and the wear resistance of the catalyst are further enhanced by adding an enhancer, wherein the enhancer mainly comprises alkylphenol polyoxyethylene ether, the prepared mass concentration is 0.2%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
4) adding active liquid into the deactivated corrugated plate denitration catalyst module after strengthening treatment for activation treatment:
the method comprises the steps that active components need to be supplemented in the activation regeneration process, the active components are effectively loaded on a catalyst through active liquid, the active liquid is aqueous solution formed by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium is 0.5%, the content of tungsten is 4%, and water is drained by means of gravity after soaking is completed;
5) drying and calcining the activated corrugated plate denitration catalyst module:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 50 ℃ for 3 hours;
5.2) calcining, after the drying operation is finished, gradually heating the drying kiln to 260 ℃, and calcining for 3 hours.
Example 2:
the embodiment provides a regeneration method of a deactivated corrugated plate denitration catalyst, which comprises the following steps,
1) pretreatment:
1.1) blowing ash, namely putting the deactivated corrugated plate denitration catalyst module into an ash blowing system, loosening fly ash on the surface of the catalyst and in a pore channel by utilizing the physical operation of compressed air, blowing floating dust on the surface of the deactivated catalyst and accumulated ash in the pore channel out, wherein the use pressure is 1Mpa, and the flow rate is 100Nm3Compression of/minBlowing gas intermittently, wherein each time interval is 30min, catalyst modules are generally vertically and fully distributed in a box body, and blown fly ash is collected by a bag-type dust collector;
1.2) ash removal and cleaning, wherein a small amount of fly ash is remained in the deactivated corrugated plate denitration catalyst module subjected to blowing and dust collection, the fly ash on the surface and in the pore channel of the catalyst is further cleaned by fresh water in a spraying mode, the cleaning time is 0.5h, and finally, water is drained by means of gravity;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore complexing, and removing deposited toxic substances:
adding a pore-complexing agent for treatment to remove toxic substances deposited in micropores of the catalyst module, wherein the main component of the pore-complexing agent is dimethyl sulfoxide, the prepared mass concentration is 0.8%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after soaking;
3) adding a reinforcer on the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the catalyst:
the surface activity and the wear resistance of the catalyst are further enhanced by adding an enhancer, wherein the enhancer mainly comprises alkylphenol polyoxyethylene ether, the prepared mass concentration is 0.6%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
4) adding active liquid into the deactivated corrugated plate denitration catalyst module after strengthening treatment for activation treatment:
the method comprises the steps that active components need to be supplemented in the activation regeneration process, the active components are effectively loaded on a catalyst through active liquid, the active liquid is aqueous solution formed by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium is 2%, the content of tungsten is 8%, and water is drained by means of gravity after soaking is completed;
5) drying and calcining the activated corrugated plate denitration catalyst module:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 50 ℃ for 3 hours;
5.2) calcining, after the drying operation is finished, gradually heating the drying kiln to 260 ℃, and calcining for 3 hours.
Example 3:
the embodiment provides a regeneration method of a deactivated corrugated plate denitration catalyst, which comprises the following steps,
1) pretreatment:
1.1) blowing ash, namely putting the deactivated corrugated plate denitration catalyst module into an ash blowing system, loosening fly ash on the surface of the catalyst and in a pore channel by utilizing the physical operation of compressed air, blowing floating dust on the surface of the deactivated catalyst and accumulated ash in the pore channel out, wherein the use pressure is 0.3Mpa, and the flow rate is 50Nm3Blowing is carried out by compressed gas per min, soot blowing is carried out intermittently, the interval time of each time is 60min, the catalyst module is generally vertically and fully distributed in a box body, and blown fly ash is collected by a bag-type dust collector;
1.2) ash removal and cleaning, wherein a small amount of fly ash is remained in the deactivated corrugated plate denitration catalyst module subjected to blowing and dust collection, the fly ash on the surface and in the pore channel of the catalyst is further cleaned by fresh water in a spraying mode for 1h, and finally, water is drained by means of gravity;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore complexing, and removing deposited toxic substances:
adding a pore-complexing agent for treatment to remove toxic substances deposited in micropores of the catalyst module, wherein the main component of the pore-complexing agent is dimethyl sulfoxide, the prepared mass concentration is 0.35%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after soaking;
3) adding a reinforcer on the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the catalyst:
the surface activity and the wear resistance of the catalyst are further enhanced by adding an enhancer, wherein the enhancer mainly comprises alkylphenol polyoxyethylene ether, the prepared mass concentration is 0.35%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
4) adding active liquid into the deactivated corrugated plate denitration catalyst module after strengthening treatment for activation treatment:
the method comprises the steps that active components need to be supplemented in the activation regeneration process, the active components are effectively loaded on a catalyst through active liquid, the active liquid is aqueous solution formed by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium is 2.5%, the content of tungsten is 8%, and water is drained by means of gravity after soaking is completed;
5) drying and calcining the activated corrugated plate denitration catalyst module:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 80 ℃ for 6 hours;
5.2) calcining, after the drying operation is finished, gradually heating the drying kiln to 350 ℃, and calcining for 6 hours.
Example 4:
the embodiment provides a regeneration method of a deactivated corrugated plate denitration catalyst, which comprises the following steps,
1) pretreatment:
1.1) blowing ash, namely putting the deactivated corrugated plate denitration catalyst module into an ash blowing system, loosening fly ash on the surface of the catalyst and in a pore channel by utilizing the physical operation of compressed air, blowing floating dust on the surface of the deactivated catalyst and accumulated ash in the pore channel out, wherein the use pressure is 0.6Mpa, and the flow rate is 60Nm3Blowing is carried out by compressed gas per min, soot blowing is carried out intermittently, the interval time of each time is 30min, the catalyst module is generally vertically and fully distributed in a box body, and blown fly ash is collected by a bag-type dust collector;
1.2) ash removal and cleaning, wherein a small amount of fly ash is remained in the deactivated corrugated plate denitration catalyst module subjected to blowing and dust collection, the fly ash on the surface and in the pore channel of the catalyst is further cleaned by fresh water in a spraying mode, the cleaning time is 0.5h, and finally, water is drained by means of gravity;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore complexing, and removing deposited toxic substances:
adding a pore-complexing agent for treatment to remove toxic substances deposited in micropores of the catalyst module, wherein the main component of the pore-complexing agent is hexamethylenetetramine, the prepared mass concentration is 0.1%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
3) adding a reinforcer on the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the catalyst:
the surface activity and the wear resistance of the catalyst are further enhanced by adding an enhancer, wherein the enhancer mainly comprises fatty alcohol-polyoxyethylene ether, the prepared mass concentration is 0.1%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
4) adding active liquid into the deactivated corrugated plate denitration catalyst module after strengthening treatment for activation treatment:
the method comprises the steps that active components need to be supplemented in the activation regeneration process, the active components are effectively loaded on a catalyst through active liquid, the active liquid is aqueous solution formed by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium is 2%, the content of tungsten is 8%, and water is drained by means of gravity after soaking is completed;
5) drying and calcining the activated corrugated plate denitration catalyst module:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 80 ℃ for 5 hours;
5.2) calcining, after the drying operation is finished, gradually heating the drying kiln to 350 ℃, and calcining for 5 hours.
Example 5:
the embodiment provides a regeneration method of a deactivated corrugated plate denitration catalyst, which comprises the following steps,
1) pretreatment:
1.1) blowing ash, namely putting the deactivated corrugated plate denitration catalyst module into an ash blowing system, loosening fly ash on the surface of the catalyst and in a pore channel by utilizing the physical operation of compressed air, blowing floating dust on the surface of the deactivated catalyst and accumulated ash in the pore channel out, wherein the use pressure is 0.5Mpa, and the flow rate is 60Nm3Blowing is carried out intermittently by compressed gas for min, and each timeThe interval time is 30min, the catalyst modules are generally vertically and fully distributed in a box body, and the swept fly ash is collected by a bag-type dust collector;
1.2) ash removal and cleaning, wherein a small amount of fly ash is remained in the deactivated corrugated plate denitration catalyst module subjected to blowing and dust collection, the fly ash on the surface and in the pore channel of the catalyst is further cleaned by fresh water in a spraying mode for 3h, and finally, water is drained by means of gravity;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore complexing, and removing deposited toxic substances:
adding a pore-complexing agent for treatment to remove toxic substances deposited in micropores of the catalyst module, wherein the main component of the pore-complexing agent is hexamethylenetetramine, the prepared mass concentration is 0.35%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
3) adding a reinforcer on the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the catalyst:
the surface activity and the wear resistance of the catalyst are further enhanced by adding an enhancer, wherein the enhancer mainly comprises fatty alcohol-polyoxyethylene ether, the prepared mass concentration is 0.35%, the operation is carried out at normal temperature and normal pressure, and water is drained by means of gravity after the soaking is finished;
4) adding active liquid into the deactivated corrugated plate denitration catalyst module after strengthening treatment for activation treatment:
the method comprises the steps that active components need to be supplemented in the activation regeneration process, the active components are effectively loaded on a catalyst through active liquid, the active liquid is aqueous solution formed by dissolving ammonium metavanadate and ammonium metatungstate in oxalic acid and monoethanolamine, wherein the content of vanadium is 2.5%, the content of tungsten is 8%, and water is drained by means of gravity after soaking is completed;
5) drying and calcining the activated corrugated plate denitration catalyst module:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 80 ℃ for 6 hours;
5.2) calcining, after the drying operation is finished, gradually heating the drying kiln to 350 ℃, and calcining for 6 hours.
The denitration efficiency of the corrugated plate denitration catalysts prepared in the examples 1 to 5 is detected, and compared with a fresh catalyst, and the detection and comparison results are detailed in the following table:
| denitration efficiency at 300 ℃ (%) | Denitration efficiency at 350 ℃ (%) | |
| Fresh catalyst | 91.8 | 95.5 |
| Catalyst prepared in example 1 | 82.3 | 89.6 |
| Catalyst prepared in example 2 | 86.6 | 92.1 |
| Catalyst prepared in example 3 | 91.4 | 95.2 |
| Catalyst prepared in example 4 | 80.5 | 87.6 |
| Catalyst prepared in example 5 | 88.7 | 92.9 |
In conclusion, according to the regeneration method of the deactivated corrugated plate denitration catalyst provided by the invention, according to the unique appearance structure and physicochemical property characteristics of the corrugated plate denitration catalyst, the regeneration process of soot blowing, cleaning, drying, pore re-compounding, strengthening, activating and drying and calcining is adopted, so that the regeneration of the deactivated corrugated plate denitration catalyst module is realized, the loss of the strength and the performance of the catalyst is avoided, the catalyst can be recycled after regeneration, and the denitration efficiency is ensured.
Claims (9)
1. A regeneration method of a deactivated corrugated plate denitration catalyst, which is characterized by comprising the following steps:
1) preprocessing, namely performing soot blowing, cleaning and drying treatment on the deactivated corrugated plate denitration catalyst module;
2) adding a pore-complexing agent into the pretreated deactivated corrugated plate denitration catalyst module to complete pore-complexing, and removing deposited toxic substances;
3) adding a reinforcer to the surface of the deactivated corrugated plate denitration catalyst module after pore recombination to strengthen the surface activity and wear resistance of the deactivated corrugated plate denitration catalyst module;
4) adding active liquid into the strengthened deactivated corrugated plate denitration catalyst module for activation treatment;
5) and drying and calcining the activated corrugated plate denitration catalyst module.
2. The method according to claim 1, wherein the step 1) specifically comprises:
1.1) blowing ash, namely putting an inactivated corrugated plate denitration catalyst module into an ash blowing system, and intermittently blowing by using compressed air, wherein the interval time is 5-60 min each time, the pressure of the compressed air is 0.3-1 Mpa, and the flow is 30-100 Nm3/min；
1.2) cleaning, namely further cleaning fly ash on the surface and in pore channels of the deactivated corrugated plate denitration catalyst module subjected to soot blowing treatment by using fresh water, wherein the cleaning mode adopts spray type cleaning, and the cleaning time is 0.5-3 h;
1.3) drying, and draining the cleaned deactivated corrugated plate denitration catalyst module by gravity.
3. The method as claimed in claim 2, wherein the pressure of the compressed air in step 1.1) is 0.6Mpa and the flow rate is 60Nm3/min。
4. The method according to claim 1, wherein the pore complexing agent in the step 2) comprises dimethyl sulfoxide or hexamethylenetetramine, and the mass concentration of the pore complexing agent is 0.1-1%; the secondary hole is operated at normal temperature and normal pressure, and water is drained by means of gravity after the secondary hole is completed.
5. The method according to claim 4, wherein the mass concentration of the pore-complexing agent is 0.15%.
6. The method according to claim 1, wherein the enhancer in the step 3) comprises alkylphenol ethoxylate or fatty alcohol ethoxylate, and the mass concentration of the enhancer is 0.1-1%; the strengthening is operated at normal temperature and normal pressure, and the water is drained by means of gravity after soaking.
7. The method according to claim 1, wherein the active solution in the step 4) is an aqueous solution of ammonium metavanadate and ammonium metatungstate dissolved in oxalic acid and monoethanolamine, and the content of vanadium in the active solution is 0.5-2.5%, and the content of tungsten in the active solution is 3-10%.
8. The method as claimed in claim 1, wherein the step 4) of activating is completed and then draining is performed by gravity.
9. The method according to claim 1, wherein the step 5) comprises in particular:
5.1) drying, namely conveying the activated corrugated plate denitration catalyst module into a drying kiln for heating at the temperature of 50-80 ℃ for 3-10 h;
5.2) calcining, wherein after drying operation is finished, the temperature of the drying kiln is gradually increased to 260-350 ℃, and the calcining time is 3-10 h.
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