CN203635222U - Catalyst regeneration device for solidifying active matter by utilizing overheated vapor - Google Patents

Catalyst regeneration device for solidifying active matter by utilizing overheated vapor Download PDF

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Publication number
CN203635222U
CN203635222U CN201320641989.5U CN201320641989U CN203635222U CN 203635222 U CN203635222 U CN 203635222U CN 201320641989 U CN201320641989 U CN 201320641989U CN 203635222 U CN203635222 U CN 203635222U
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China
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valve
activating solution
catalyst
pipeline
outlet
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CN201320641989.5U
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盘思伟
李丽
陈冬林
张巍
曾稀
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Changsha University of Science and Technology
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Changsha University of Science and Technology
Electric Power Research Institute of Guangdong Power Grid Co Ltd
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Abstract

The utility model provides a catalyst regeneration device for solidifying an active matter by utilizing overheated vapor. The catalyst regeneration device is characterized in that an activated liquid storage device, a washing liquid storage device and a spraying device which is arranged above the catalyst are added in the existing denitrification process; a vapor outlet of an overheating device is communicated with the spraying device, and a pressure gauge, a pressure reducing valve, a first valve and a first flowmeter are sequentially arranged between the overheating device and the spraying device; the activated liquid storage device is connected with the spraying device through a second pipeline, and the second pipeline is provided with a second valve and a second flowmeter; the washing liquid storage device is communicated with the spraying device through a third valve and a third flowmeter. The devices such as the activated liquid storage device and the washing liquid storage device are added in the traditional flue gas denitrification process, so that the structure is simple, the regeneration flow of the catalyst is simple, the regeneration period is short, and the cost is low; the purging and washing process of the catalyst, the spraying and regeneration process of the activated liquid and the solidifying process of the catalyst active matter can be realized, and the regeneration effect is good.

Description

A kind of catalyst regeneration device of utilizing superheated steam curing activity thing
Technical field
The utility model relates to catalyst regeneration device field, especially, relates to a kind of catalyst regeneration device of utilizing superheated steam curing activity thing.
Background technology
Along with national economy ground rapid growth, the demand of electric power constantly increases.Be subject to the restriction of domestic energy resource structure, China's power generation is take fire coal as main, and thermal power generation accounts for power industry leading position.A large amount of consumption of thermal power plant coal have brought serious pollution to environment, are mainly wherein NO xgeneration and discharge.For NO xdischarge causes the problem of environmental pollution, and country has clearly stipulated to strengthen control dynamics, especially the fired power generating unit NO to nitrogen oxide emission in " 12 " planning xdischarge capacity, carries out preventing and treating system take the discharge of control Thermal Power Generation Industry as the Industrial Nitrogen oxide of core.
Coal-fired power plant's SCR (SCR) denitration technology be at present in the world efficiency higher, administer NO xthe most fruitful a kind of gas denitrifying technology.China's denitration project almost all adopts external denitration technology, denitration cost is quite expensive, catalyst formulation and manufacturing technology thereof are mainly from external introduction, the catalyst that domestic flue gas SCR denitration system is used is almost all from external import, price is very expensive, every cubic metre of marked price is up to 50,000 yuan of left and right, and its installation fee accounts for 30~50% of SCR denitrating system gross investment.On the other hand, SCR denitrification apparatus is directly exposed in ash-laden gas, is easy to be stopped up by flying dust, simultaneously with flue gas in fly ash particle generation chemical reaction and poisoning, catalyst is lost activity and seriously reduce denitration efficiency, catalyst is due to poisoning, and within average 2 to 3 years, needs are changed once.For reducing denitrating system operating cost, conventionally take the method that fouled catalyst is regenerated to substitute the brand-new catalyst of replacing, the two is compared, and catalyst activation regeneration can be saved 50% cost.
Catalyst activation method of reproduction comprises the online activation method of catalyst and off-line activation method.Time-consuming, the deficiency such as require great effort and take a lot of work that catalyst off-line activating technology exists.Up to now, due to the restriction of production environment and technology, also there is not catalyst on-line regeneration facility, therefore, research and develop a kind of can suppress catalyst poisoning and in boiler operatiopn, can activate online or blowing out after carry out fast activating at Benitration reactor scene method and technique be very urgent and necessary.
Utility model content
The utility model object is to provide the on-line regeneration facility that a kind of cost is low, easy to operate, catalyst regeneration is effective, and concrete technical scheme of the present utility model is as follows:
A kind of catalyst regeneration device of utilizing superheated steam curing activity thing, comprise boiler furnace, superheater, air preheater, electric cleaner, denitration reaction tower, the first baffle plate, second baffle and the 3rd baffle plate, between described boiler furnace and described denitration reaction tower, be provided with ash bucket; Described the first baffle plate is arranged between the outlet of described ash bucket and the entrance of described denitration reaction tower, described second baffle is arranged between the outlet of described ash bucket and the import of described air preheater, described the 3rd baffle plate is arranged between the outlet of described denitration reaction tower and the import of described air preheater, described superheater comprises steam inlet and steam (vapor) outlet, and be arranged between the outlet and described ash bucket of described boiler furnace, it is characterized in that: also comprise activating solution memory, cleaning fluid memory and be arranged at the spray equipment of catalyst top;
The steam (vapor) outlet of described superheater and described spray equipment, by the first pipeline communication, are provided with pressure gauge, pressure-reducing valve, the first valve and first flow meter by steam (vapor) outlet to spray equipment direction on described the first pipeline successively;
Described activating solution memory is communicated with described spray equipment by second pipe, and described second pipe is provided with the second valve and the second flowmeter;
Described cleaning fluid memory is connected with described spray equipment by the 3rd pipeline, and described the 3rd pipeline is provided with the 3rd valve and the 3rd flowmeter.
Preferred in above technical scheme, described activating solution memory comprises that activating solution is prepared pond and activating solution is laid in pond, described activating solution deposit pond communicates through the 4th valve with the lower part outlet of described denitration reaction tower, described activating solution deposit pond is prepared pond with described activating solution and is communicated with through the 5th valve and the first water pump, described activating solution deposit pond communicates through the 8th valve with described cesspool, and described activating solution is prepared pond and is communicated with spray equipment.
Preferred in above technical scheme, described activating solution is prepared and in pond, is provided with heater and agitator.
Preferred in above technical scheme, on described second pipe, be also provided with the second water pump; On described the 3rd pipeline, be also provided with the 3rd water pump.
In order to reach better technique effect, also comprise condensation decompression shunting device, described condensation decompression shunting device is by the pipeline communication between the 6th valve and described pressure-reducing valve and described the first valve.
In order to reach better technique effect, also comprise cesspool, the lower part outlet of described cesspool and described denitration reaction tower is by the 4th pipeline communication, and described the 4th pipeline is provided with the 7th valve.
Preferred in above technical scheme, cleaning fluid memory is power plant's demineralized water device.
Preferred in above technical scheme, the many jet pipes that described spray equipment is arranged in arrays.
Preferred in above technical scheme, the front end of described jet pipe is provided with spiral nozzle.
The utlity model has following beneficial effect:
(1) the utility model by having increased activating solution memory, cleaning fluid memory in original flue-gas denitration process, be arranged at spray equipment above catalyst and for controlling flowmeter, Pressure gauge and the valve etc. of flow or pressure, single unit system structure is simplified, catalyst regeneration process flow process is simple, regeneration period is short, and cost is low.
(2) the utility model is realized the process such as solidify of spray, the active matter of the purging of catalyst and cleaning, activating solution, favorable regeneration effect by single unit system.
(3) in the utility model, activating solution memory comprises that activating solution is prepared pond and activating solution is laid in pond, the activating solution that activating solution is prepared in pond activates rear inflow activating solution deposit pond to catalyst, supernatant liquid regeneration in activating solution deposit pond is delivered to activating solution through pump after processing again to be prepared in pond, realizes recycling of activating solution.
(4) in the utility model prepared by activating solution and in pond, be provided with heater and agitator, heater is prepared pond for activating solution and is prepared activating solution certain temperature support is provided, agitator, for the activating solution preparing and the activating solution that recycles are stirred, strengthens activation effect.
(5) in the utility model, activating solution is prepared between pond and denitration reaction tower and is provided with water pump, and the activating solution of being convenient to activating solution to prepare in pond is delivered in denitration reaction tower, and the installation site scope that activating solution is prepared pond is wide, easy to use.
(6) in the utility model, the design of condensation decompression shunting device is convenient to catalyst and will after unnecessary hot gas condensation, be discharged when curing, raising solidification effect.
(7) design of cesspool in the utility model, is convenient to store the sewage of discharging in single unit system, facilitates follow-up timing that sewage is processed, and reduces its environmental pollution.
(8) the many jet pipes that in the utility model, shower device is arranged in arrays, and the front end of jet pipe is provided with spiral nozzle, makes catalyst steam or activating solution or cleaning fluid uniform spraying in whole regenerative process, avoids the existence at dead angle, favorable regeneration effect.
(9) in the utility model, adopt the high-temperature steam of superheater outlet to be cured catalyst, cleaning fluid memory is power plant's demineralized water device, reuses original flue gas denitrification system, simplifies the structure of single unit system, reduce costs, improve catalyst regeneration effect.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the overall structure schematic diagram of the utility model preferred embodiment 1;
1-boiler furnace, 2-superheater, 21-steam inlet, 22-steam (vapor) outlet, 3-air preheater, 4-electric cleaner, 5-denitration reaction tower, 6-the first baffle plate, 7-second baffle, 8-the 3rd baffle plate, 9-activating solution memory, 91-activating solution is prepared pond, 911-the 5th valve, 912-the first water pump, 913-heater, 914-agitator, 92-activating solution deposit pond, 921-the 4th valve, 922-the 8th valve, 10-cleaning fluid memory, 11-spray equipment, 12-the first pipeline, 121-pressure gauge, 122-pressure-reducing valve, 123-the first valve, 124-first flow meter, 13-second pipe, 131-the second valve, 132-the second water pump, 14-the 3rd pipeline, 141-the 3rd valve, 142-the 3rd water pump, 143-the 3rd flowmeter, 15-the second flowmeter, 16-condensation decompression shunting device, 161-the 6th valve, 17-cesspool, 18-the 4th pipeline, 181-the 7th valve, 19-ash bucket, 20-catalyst layer.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can limit and cover according to claim is implemented.
Embodiment 1:
A kind of catalyst regeneration device of utilizing superheated steam curing activity thing, comprise boiler furnace 1, superheater 2, air preheater 3, electric cleaner 4, denitration reaction tower 5, the first baffle plate 6, second baffle 7, the 3rd baffle plate 8, activating solution memory 9, cleaning fluid memory 10 and be arranged at the spray equipment 11 of catalyst layer 20 tops, refer to accompanying drawing 1, overall structure is simplified.
The many jet pipes that described spray equipment 11 is arranged in arrays, and its front end is provided with spiral nozzle, makes catalyst steam or activating solution or cleaning fluid uniform spraying in whole regenerative process, avoids the existence at dead angle, favorable regeneration effect.
Between described boiler furnace 1 and described denitration reaction tower 5, be provided with ash bucket 19; Described the first baffle plate 6 is arranged between the outlet of described ash bucket 19 and the entrance of described denitration reaction tower 5; Described second baffle 7 is arranged between the outlet of described ash bucket 19 and the import of described air preheater 3; Described the 3rd baffle plate 8 is arranged between the outlet of described denitration reaction tower 5 and the import of described air preheater 3; Described superheater 2 comprises steam inlet 21 and steam (vapor) outlet 22, and is arranged between the outlet and described ash bucket 19 of described boiler furnace 1.
The steam (vapor) outlet 22 of described superheater 2 is communicated with by the first pipeline 12 with described spray equipment 11, on described the first pipeline 12, be provided with successively pressure gauge 121, pressure-reducing valve 122, the first valve 123 and first flow meter 124 by steam (vapor) outlet 22 to spray equipment 11 directions, pressure gauge 121, first flow meter 124 are for controlling the flow of the first pipeline 12 steam, the pressure of the steam that pressure-reducing valve 122 is come for reducing the steam (vapor) outlet 22 through superheater 2; The steam of coming by the steam (vapor) outlet 22 of superheater 2 can be realized solidifying of catalyst activity compound, improves the activation efficiency of catalyst.
Described activating solution memory 9 is communicated with described spray equipment 11 by second pipe 13, described second pipe 13 is provided with the second valve 131, the second water pump 132 and the second flowmeter 15, and described the second water pump 132 is arranged at described the second valve 131 and described activating solution is prepared between pond 91, described activating solution memory 9 comprises that activating solution is prepared pond 91 and activating solution is laid in pond 92, described activating solution deposit pond 92 communicates through the 4th valve 921 with the lower part outlet of described denitration reaction tower 5, described activating solution deposit pond 92 is prepared pond 91 with described activating solution and is communicated with through the 5th valve 911 and the first water pump 912, described activating solution deposit pond 92 communicates through the 8th valve with described cesspool 17, described activating solution is prepared pond 91 and is communicated with spray equipment 11, the activating solution that activating solution is prepared in pond activates rear inflow activating solution deposit pond to catalyst, after regeneration is processed, being delivered to activating solution again through pump prepares in pond, realize recycling of activating solution.
Described cleaning fluid memory 9 is power plant's demineralized water device, it is communicated with described the 3rd flowmeter 143 by the 3rd pipeline 14, described the 3rd pipeline 14 is provided with the 3rd valve 141 and the 3rd water pump 142, cleaning fluid in cleaning fluid memory 9 can be realized the cleaning of catalyst, and in cleaning process, the 3rd flowmeter 143 is for controlling the flow of cleaning fluid.
The high-temperature steam of the curing employing superheater outlet of above catalyst activity thing, cleaning fluid memory is power plant's demineralized water device, reuses original flue gas denitrification system, simplifies the structure of single unit system, reduces costs, and improves catalyst regeneration effect.
Activating solution of the present utility model is prepared and in pond 91, is also provided with heater 913 and agitator 914, heater is prepared pond for activating solution and is prepared activating solution certain temperature support is provided, agitator, for the activating solution preparing and the activating solution that recycles are stirred, strengthens activation effect.
In the utility model, also comprise condensation decompression shunting device 16, described condensation decompression shunting device 16 is by the pipeline communication between the 6th valve 161 and described pressure-reducing valve 122 and described the first valve 123, design is herein convenient to catalyst and will after unnecessary hot gas condensation, be discharged in the time carrying out active matter curing, improves solidification effect.
In the utility model, also comprise cesspool 17, described cesspool 17 is communicated with by the 4th pipeline 18 with the lower part outlet of described denitration reaction tower 4, described the 4th pipeline 18 is provided with the 7th valve 181, the design of cesspool, be convenient to store the sewage of discharging in single unit system, facilitate follow-up timing that sewage is processed, reduce its environmental pollution.
Adopt said apparatus, the spray of the purging of catalyst, cleaning, activating solution and active matter the detailed process such as to solidify as follows:
Before technique starts, first close the first baffle door 6 and the 3rd baffle door 8, and open second baffle 7, boiler smoke is now without denitrification apparatus, directly be bypassed in air preheater, during guaranteeing that whole technique is carried out, do not have boiler smoke and enter in denitration reaction tower 5;
(1) catalyst purge: open the first valve 123, pressure-reducing valve 122 and the 7th valve 181, open the loop of the steam (vapor) outlet 22 of superheater 2, utilize pressure-reducing valve 122 to reduce the pressure of the steam of outlet, and monitor steam pressure by pressure gauge 121, utilize first flow meter 124, steam regulation flow, guarantee that spray meets technological requirement to the steam on 20 layers of decaying catalysts, shower nozzle by spray equipment 11 purges the dust stratification of removing catalyst surface, the flying dust departing from from catalyst layer 20 surfaces after purging drains into cesspool 17 along the 4th pipeline 18, finally drain in power plant's ashpit by the blowoff valve that connects cesspool 17,
(2) cleaning of catalyst: close the first valve 123 and pressure-reducing valve 20, open the 3rd valve 141 of demineralized water import, the 3rd water pump 142, utilize the 3rd flowmeter 143 to regulate rinse water to desired flow, make rinse water have certain kinetic energy, can take away and stick to the dust and the salt that in catalyst layer 20 surfaces or duct, are not purged, dust and salts substances are rinsed to cesspool 17, when the plaster in cesspool 17 no longer changes or changes when very little, stop cleaning;
(3) spray of activating solution and regeneration: the 3rd valve 141 of closing demineralized water import, the 3rd water pump 142 and the 7th valve 181, open the 4th valve 921 and the second valve 131, start the second water pump 132 simultaneously, aperture by the second valve 131 and utilize the second flowmeter 15 to monitor, adjust flow and the flow velocity of activating solution spray catalyst layer 20, make activating solution slowly flow through catalyst, the activating solution flowing through after catalyst flows in activating solution deposit pond 92 along pipeline, after spray certain hour, stop the spray of activating solution, close the 4th valve 921 and the second valve 131, stop the second water pump 132, now, adopt physico-chemical process to the processing of regenerate of the activating solution in activating solution deposit pond 92, after a period of time, unlatching the 5th valve 911, and starting the first water pump 912, the effective regeneration liquid in activating solution deposit pond 92 is back to activating solution by the first water pump 912 conveyings to be prepared in pond 91, open the 8th valve 922, deposit is entered in cesspool through pipeline, realize the Efficient Cycle utilization of activating solution, regeneration is closed the 5th valve 911 and the 8th valve 922 after processing, and stops the operation of the first water pump 912.
(4) solidifying of catalyst activity thing: open the first valve 123, the second valve 131 and the 6th valve 161, open condensation decompression shunting device 16, introduce high-temperature steam from the steam (vapor) outlet 22 of superheater 2, regulate the aperture of pressure-reducing valve 122, open Pressure gauge 121, make vapor (steam) temperature keep 540 ℃ of left and right, now, ammonium metavanadate, ammonium tungstate and the ammonium molybdate that the catalyst surface after activated spray adheres to can be decomposed into the active component WO that decaying catalyst need to be supplementary completely 3, V 2o 5and MoO 3, after calcining at constant temperature a period of time, close the second valve 131, the first valve 123 and the 6th valve 161.Open the first baffle plate 6 and the 3rd baffle plate 8, close second baffle 7, normally move flue gas desulphurization system.Now the activation recovering of catalyst is better, and denitration efficiency is high.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (9)

1. one kind is utilized the catalyst regeneration device of superheated steam curing activity thing, comprise boiler furnace (1), superheater (2), air preheater (3), electric cleaner (4), denitration reaction tower (5), the first baffle plate (6), second baffle (7) and the 3rd baffle plate (8), between described boiler furnace (1) and described denitration reaction tower (5), be provided with ash bucket (19), described the first baffle plate (6) is arranged between the outlet of described ash bucket (19) and the entrance of described denitration reaction tower (5), described second baffle (7) is arranged between the outlet of described ash bucket (19) and the import of described air preheater (3), described the 3rd baffle plate (8) is arranged between the outlet of described denitration reaction tower (5) and the import of described air preheater (3), described superheater (2) comprises steam inlet (21) and steam (vapor) outlet (22), and be arranged between the outlet and described ash bucket (19) of described boiler furnace (1), it is characterized in that: also comprise activating solution memory (9), cleaning fluid memory (10) and be arranged at the spray equipment (11) of catalyst top,
The steam (vapor) outlet (22) of described superheater (2) is communicated with by the first pipeline (12) with described spray equipment (11), and described the first pipeline (12) is upper is provided with pressure gauge (121), pressure-reducing valve (122), the first valve (123) and first flow meter (124) successively by steam (vapor) outlet (22) to spray equipment (11) direction;
Described activating solution memory (9) is connected with described spray equipment (11) by second pipe (13), and described second pipe (13) is provided with the second valve (131) and the second flowmeter (15);
Described cleaning fluid memory (10) is connected with described spray equipment (11) by the 3rd pipeline (14), and described the 3rd pipeline (14) is provided with the 3rd valve (141) and the 3rd flowmeter (143).
2. the catalyst regeneration device of utilizing superheated steam curing activity thing according to claim 1, it is characterized in that: described activating solution memory (9) comprises that activating solution is prepared pond (91) and activating solution is laid in pond (92), described activating solution deposit pond (92) communicates through the 4th valve (921) with the lower part outlet of described denitration reaction tower (5), described activating solution deposit pond (92) is prepared pond (91) with described activating solution and is communicated with through the 5th valve (911) and the first water pump (912), described activating solution deposit pond (92) communicates through the 8th valve (922) with cesspool (17), described activating solution is prepared pond (91) and is communicated with spray equipment (11).
3. the catalyst regeneration device of utilizing superheated steam curing activity thing according to claim 2, is characterized in that: described activating solution is prepared and in pond (91), is provided with heater (913) and agitator (914).
4. the catalyst regeneration device of utilizing superheated steam curing activity thing according to claim 1, is characterized in that: on described second pipe (13), be also provided with the second water pump (132); On described the 3rd pipeline (14), be also provided with the 3rd water pump (142).
5. according to the catalyst regeneration device of utilizing superheated steam curing activity thing described in claim 1-4 any one, it is characterized in that: also comprise condensation decompression shunting device (16), described condensation decompression shunting device (16) is by the pipeline communication between the 6th valve (161) and described pressure-reducing valve (122) and described the first valve (123).
6. according to the catalyst regeneration device of utilizing superheated steam curing activity thing described in claim 1-4 any one, it is characterized in that: also comprise cesspool (17), described cesspool (17) is communicated with by the 4th pipeline (18) with the lower part outlet of described denitration reaction tower (5), and described the 4th pipeline (18) is provided with the 7th valve (181).
7. the catalyst regeneration device of utilizing superheated steam curing activity thing according to claim 1, is characterized in that: described cleaning fluid memory (9) is power plant's demineralized water device.
8. the catalyst regeneration device of utilizing superheated steam curing activity thing according to claim 1, is characterized in that: the many jet pipes that described spray equipment (11) is arranged in arrays.
9. the catalyst regeneration device of utilizing superheated steam curing activity thing according to claim 8, is characterized in that: the front end of described jet pipe is provided with spiral nozzle.
CN201320641989.5U 2013-10-17 2013-10-17 Catalyst regeneration device for solidifying active matter by utilizing overheated vapor Expired - Lifetime CN203635222U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475176A (en) * 2014-11-25 2015-04-01 安徽迪诺环保新材料科技有限公司 Method for regenerating out-of-work denitration catalyst
CN105435864A (en) * 2015-11-11 2016-03-30 福建紫荆环境工程技术有限公司 In-situ regeneration device and method for glass kiln SCR denitration catalyst
CN109926104A (en) * 2019-03-25 2019-06-25 江苏奥利思特环保科技有限公司 A kind of low-temperature denitration catalyst hot recycling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475176A (en) * 2014-11-25 2015-04-01 安徽迪诺环保新材料科技有限公司 Method for regenerating out-of-work denitration catalyst
CN104475176B (en) * 2014-11-25 2017-05-31 安徽迪诺环保新材料科技有限公司 One kind failure denitrating catalyst renovation process
CN105435864A (en) * 2015-11-11 2016-03-30 福建紫荆环境工程技术有限公司 In-situ regeneration device and method for glass kiln SCR denitration catalyst
CN109926104A (en) * 2019-03-25 2019-06-25 江苏奥利思特环保科技有限公司 A kind of low-temperature denitration catalyst hot recycling device

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Granted publication date: 20140611