CN107961818A - The renovation process and production equipment of flue gas SCR catalyst - Google Patents
The renovation process and production equipment of flue gas SCR catalyst Download PDFInfo
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- CN107961818A CN107961818A CN201711273172.6A CN201711273172A CN107961818A CN 107961818 A CN107961818 A CN 107961818A CN 201711273172 A CN201711273172 A CN 201711273172A CN 107961818 A CN107961818 A CN 107961818A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/02—Heat treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
- B01J38/485—Impregnating or reimpregnating with, or deposition of metal compounds or catalytically active elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/48—Liquid treating or treating in liquid phase, e.g. dissolved or suspended
- B01J38/50—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using organic liquids
- B01J38/52—Liquid treating or treating in liquid phase, e.g. dissolved or suspended using organic liquids oxygen-containing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
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- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The invention belongs to catalyst regeneration techniques field, the more particularly to a kind of renovation process and production equipment of flue gas SCR catalyst, renovation process, comprises the following steps：S1, configuration trishydroxymethylaminomethane weak solution, add tetrabutylammonium hydroxide phosphorus, and solution A is made in heating；S2, to spray solution A on flue gas SCR catalyst, maintain temperature at 70 80 DEG C；S3, configuration phenylacetate weak solution, add double (lemon diethyl phthalate) dipropoxy zirconium chelates, and solution B is made in heating；S4, by flue gas SCR catalyst immerse solution B, ultrasound after, solid is put into Muffle furnace high-temperature roasting；Can rapid regeneration inactivation flue gas SCR catalyst, the flue gas SCR catalyst after regeneration, denitration efficiency is up to more than 90%, and can Reusability, service life length；The regeneration production equipment of flue gas SCR catalyst of the present invention, by set catalyst fix rotation axis so that solution spray uniformly in catalyst plates, can highly efficient regeneration SCR catalyst, use manpower and material resources sparingly, raising production efficiency.
Description
Technical field
The invention belongs to catalyst regeneration techniques field, the renovation process of more particularly to a kind of flue gas SCR catalyst and life
Produce equipment.
Background technology
SCR catalyst refers to the catalyst applied in SCR denitration system, in SCR reactions, promotes reducing agent selective
The material that ground chemically reacts at a certain temperature with the nitrogen oxides in flue gas；Catalyst is the core of SCR technology,
Determine the denitration efficiency and economy of SCR system, its construction cost accounts for more than the 20% of Flue Gas Denitrification Engineering cost, runs into
Originally more than 30% is accounted for；Using after a certain period of time, denitration efficiency reduces, it is necessary to be regenerated SCR catalyst.
The content of the invention
The present invention solves above-mentioned technical problem existing in the prior art, there is provided a kind of regeneration side of flue gas SCR catalyst
Method and production equipment.
To solve the above problems, technical scheme is as follows：
The renovation process of flue gas SCR catalyst, comprises the following steps：
S1,100 parts by weight trishydroxymethylaminomethane weak solutions of configuration, add the tetrabutylammonium hydroxide of 12-16 parts by weight
Phosphorus, is heated to 70-80 DEG C, and solution A is made；
S2, to spray solution A on flue gas SCR catalyst, maintain temperature to continue 30-60 minutes at 70-80 DEG C；
S3,100 parts by weight phenylacetate weak solutions of configuration, add double (lemon diethyl phthalate) dipropyl oxygen of 7-10 parts by weight
Base zirconium chelate, is heated to 80-90 DEG C, and solution B is made；
S4, will handle obtained flue gas SCR catalyst through step 2 and immerse solution B, when ultrasonic 2-3 is small, remove solution, will
Solid is put into Muffle furnace high-temperature roasting.
Preferably, the mass fraction of the trishydroxymethylaminomethane weak solution is 1-2%.
Preferably, the mass fraction of the phenylacetate is 3-5%.
Preferably, the phenylacetate is sodium phenylacetate or phenylacetic acid potassium.
Preferably, the condition of step 4 high-temperature roasting is 420-460 DEG C, when 3-5 is small.
The regeneration production equipment of flue gas SCR catalyst, including regeneration production room, solution A storage room and solution B storage room；
The solution A storage room bottom sets flusher, and the flusher is positioned at the surface of regeneration production room；
The regeneration production room sets two catalyst charge discharge ports, respectively positioned at regeneration production room both sides with respect to position
Put；Lid and catalyst is set to fix rotation axis on the catalyst charge discharge port, the catalyst fixes rotation axis from lid
Body center opening is stretched into regeneration production room, and one end that rotation axis of the catalyst fixing stretches into regeneration production room is set
Geometrical clamp, for fixed catalyst plate, the other end is connected with electric rotating machine；
The solution B storage room is connected by pipeline with regeneration production room, and the entrance is arranged on regeneration production
On side wall below the catalyst charge discharge port of room.
Preferably, the regeneration production room bottom sets liquid outlet opening.
Preferably, the regeneration production room bottom sets Vltrasonic device.
Preferably, regeneration production room, solution A storage room and the solution B storage room interior set heater strip.
Relative to the prior art, advantages of the present invention is as follows,
The present invention method can rapid regeneration inactivation flue gas SCR catalyst, the flue gas SCR catalyst after regeneration, denitration
It is efficient up to more than 90%, and can Reusability, service life length；The regeneration production equipment of flue gas SCR catalyst of the present invention, leads to
Cross setting catalyst fix rotation axis so that solution spray uniformly in catalyst plates, can highly efficient regeneration SCR catalyst, saving
Manpower and materials, improve production efficiency.
Brief description of the drawings
Fig. 1 is the regeneration production equipment schematic diagram of flue gas SCR catalyst；
In figure, 1 be regeneration production room, 2 be solution A storage room, 3 be solution B storage room, 4 be flusher, 5 be catalysis
Agent charging discharge port, 6 be lid, 7 be catalyst fix rotation axis, 8 be catalyst plates, 9 be electric rotating machine, 10 be pipeline, 11
It is Vltrasonic device, 12 is heater strip, 13 is liquid outlet opening.
Embodiment
Embodiment 1：
The regeneration production equipment of flue gas SCR catalyst, including regeneration production room 1, solution A storage room 2 and solution B storage room
3；
2 bottom of solution A storage room sets flusher 4, the flusher 4 positioned at regeneration production room 1 just on
Side；
The regeneration production room 1 sets two catalyst charge discharge ports 5, opposite positioned at regeneration production 1 both sides of room respectively
Position；Lid 6 and catalyst is set to fix rotation axis 7 on the catalyst charge discharge port 5, the catalyst fixes rotation axis
7 stretch into regeneration production room 1 from 6 center opening of lid, and rotation axis 7 of the catalyst fixing stretches into regeneration production room 1
One end set geometrical clamp, for fixed catalyst plate 8, the other end is connected with electric rotating machine 9；
The solution B storage room 3 is connected by pipeline 10 with regeneration production room 1, and 10 entrance of pipeline is arranged on again
On the side wall of 5 lower section of production 1 catalyst charge discharge port of room.
Preferably, regeneration production 1 bottom of room sets liquid outlet opening 13, easy to remove the unnecessary of step 3 generation
Solution B is removed after solution A, and step 4 ultrasound.
Preferably, regeneration production 1 bottom of room sets Vltrasonic device 11.
Preferably, regeneration production room 1, solution A storage room 2 and 3 interior of solution B storage room set heater strip
12。
Embodiment 2：
The renovation process of flue gas SCR catalyst, comprises the following steps：
The trishydroxymethylaminomethane aqueous solution that S1,100 parts by weight mass fractions of configuration are 1-2%, adds 12 parts by weight
Tetrabutylammonium hydroxide phosphorus, be heated to 70-80 DEG C, solution A be made；
S2, to spray solution A on flue gas SCR catalyst, maintain temperature to continue 30-60 minutes at 70-80 DEG C；
The phenylacetic acid aqueous solutions of potassium that S3,100 parts by weight mass fractions of configuration are 3-5%, adds double (lemons of 7 parts by weight
Diethyl phthalate) dipropoxy zirconium chelate, 80-90 DEG C is heated to, solution B is made；
S4, will handle obtained flue gas SCR catalyst through step 2 and immerse solution B, when ultrasonic 2-3 is small, remove solution, will
Solid is put into Muffle furnace high-temperature roasting, and temperature setting is 420 DEG C, when the time 3 is small, after cooling, completes regeneration.
Embodiment 3：
The renovation process of flue gas SCR catalyst, comprises the following steps：
The trishydroxymethylaminomethane aqueous solution that S1,100 parts by weight mass fractions of configuration are 1-2%, adds 16 parts by weight
Tetrabutylammonium hydroxide phosphorus, be heated to 70-80 DEG C, solution A be made；
S2, to spray solution A on flue gas SCR catalyst, maintain temperature to continue 30-60 minutes at 70-80 DEG C；
The sodium phenylacetate aqueous solution that S3,100 parts by weight mass fractions of configuration are 3-5%, adds double (lemons of 10 parts by weight
Diethyl phthalate) dipropoxy zirconium chelate, 80-90 DEG C is heated to, solution B is made；
S4, will handle obtained flue gas SCR catalyst through step 2 and immerse solution B, when ultrasonic 2-3 is small, remove solution, will
Solid is put into Muffle furnace high-temperature roasting, and temperature setting is 460 DEG C, when the time 5 is small, after cooling, completes regeneration.
Embodiment 4：
The renovation process of flue gas SCR catalyst, comprises the following steps：
The trishydroxymethylaminomethane aqueous solution that S1,100 parts by weight mass fractions of configuration are 1-2%, adds 14 parts by weight
Tetrabutylammonium hydroxide phosphorus, be heated to 70-80 DEG C, solution A be made；
S2, to spray solution A on flue gas SCR catalyst, maintain temperature to continue 30-60 minutes at 70-80 DEG C；
The phenylacetic acid aqueous solutions of potassium that S3,100 parts by weight mass fractions of configuration are 3-5%, adds double (lemons of 8 parts by weight
Diethyl phthalate) dipropoxy zirconium chelate, 80-90 DEG C is heated to, solution B is made；
S4, will handle obtained flue gas SCR catalyst through step 2 and immerse solution B, when ultrasonic 2-3 is small, remove solution, will
Solid is put into Muffle furnace high-temperature roasting, and temperature setting is 440 DEG C, when the time 4 is small, after cooling, completes regeneration.
Embodiment 5：
The renovation process of flue gas SCR catalyst, with embodiment 4, difference is, changes adding for tetrabutylammonium hydroxide phosphorus
Enter amount：
A groups：10 parts by weight；
B groups：16 parts by weight.
Embodiment 6：
The renovation process of flue gas SCR catalyst, with embodiment 4, difference is, changes double (lemon diethyl phthalates) two
The addition of propoxyl group zirconium chelate：
A groups：4 parts by weight；
B groups：13 parts by weight.
Embodiment 7：
The renovation process of flue gas SCR catalyst, with embodiment 4, difference is, changes the step 4 calcination temperature：
A groups：380℃；
B groups：500℃.
Embodiment 8：
Denitrating flue gas tower will be used for by the regenerated catalyst of the method for embodiment 2-7, denitration efficiency is as shown in the table：
| Regenerate SCR catalyst group | Denitration efficiency % |
| SCR catalyst (raw material that each embodiment uses) before regeneration | 61.3 |
| Embodiment 2 | 89.1 |
| Embodiment 3 | 87.6 |
| Embodiment 4 | 92.1 |
| Embodiment 5-A groups | 72.4 |
| Embodiment 5-B groups | 76.5 |
| Embodiment 6-A groups | 75.1 |
| Embodiment 6-B groups | 64.5 |
| Embodiment 7-A groups | 42.3 |
| Embodiment 7-B groups | 77.3 |
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention, it is not used for limiting the present invention's
Protection domain, the equivalent substitution or replacement made on the basis of the above belong to protection scope of the present invention.
Claims (9)
1. the renovation process of flue gas SCR catalyst, it is characterised in that comprise the following steps：
S1,100 parts by weight trishydroxymethylaminomethane weak solutions of configuration, add the tetrabutylammonium hydroxide phosphorus of 12-16 parts by weight, add
Solution A is made to 70-80 DEG C in heat；
S2, to spray solution A on flue gas SCR catalyst, maintain temperature to continue 30-60 minutes at 70-80 DEG C；
S3,100 parts by weight phenylacetate weak solutions of configuration, add double (lemon diethyl phthalate) dipropoxy zirconiums of 7-10 parts by weight
Chelate, is heated to 80-90 DEG C, and solution B is made；
S4, will handle obtained flue gas SCR catalyst through step 2 and immerse solution B, when ultrasonic 2-3 is small, solution be removed, by solid
It is put into Muffle furnace high-temperature roasting.
2. the renovation process of flue gas SCR catalyst as claimed in claim 1, it is characterised in that the trihydroxy methyl amino first
The mass fraction of alkane weak solution is 1-2%.
3. the renovation process of flue gas SCR catalyst as claimed in claim 1, it is characterised in that the quality of the phenylacetate
Fraction is 3-5%.
4. the renovation process of flue gas SCR catalyst as claimed in claim 1, it is characterised in that the phenylacetate is benzene second
Sour sodium or phenylacetic acid potassium.
5. the renovation process of flue gas SCR catalyst as claimed in claim 1, it is characterised in that the condition of step 4 high-temperature roasting
For 420-460 DEG C, when 3-5 is small.
6. the regeneration production equipment of the flue gas SCR catalyst as described in claim 1-5, it is characterised in that produced including regeneration
Room, solution A storage room and solution B storage room；
The solution A storage room bottom sets flusher, and the flusher is positioned at the surface of regeneration production room；
The regeneration production room sets two catalyst charge discharge ports, respectively positioned at regeneration production room both sides relative position；Institute
State and set lid and catalyst to fix rotation axis on catalyst charge discharge port, the catalyst fixes rotation axis from lid center
Position opening stretches into regeneration and produces in room, and one end that rotation axis of the catalyst fixing stretches into regeneration production room sets fixation
Folder, for fixed catalyst plate, the other end is connected with electric rotating machine；
The solution B storage room is connected by pipeline with regeneration production room, and the entrance is arranged on regeneration production room and urges
On side wall below agent charging discharge port.
7. regeneration production equipment as claimed in claim 6, it is characterised in that the regeneration production room bottom sets liquid to discharge
Mouthful.
8. regeneration production equipment as claimed in claim 6, it is characterised in that the regeneration production room bottom sets ultrasound dress
Put.
9. regeneration production equipment as claimed in claim 6, it is characterised in that the regeneration production room, solution A storage room and molten
Liquid B storage rooms interior sets heater strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711273172.6A CN107961818A (en) | 2017-12-06 | 2017-12-06 | The renovation process and production equipment of flue gas SCR catalyst |
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| CN201711273172.6A CN107961818A (en) | 2017-12-06 | 2017-12-06 | The renovation process and production equipment of flue gas SCR catalyst |
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| CN107961818A true CN107961818A (en) | 2018-04-27 |
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| CN201711273172.6A Pending CN107961818A (en) | 2017-12-06 | 2017-12-06 | The renovation process and production equipment of flue gas SCR catalyst |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114314928A (en) * | 2022-01-04 | 2022-04-12 | 湖南烯富环保科技有限公司 | Integrated production line and method for removing chloride ions and regenerating dechlorination agent from dechlorination slag |
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Cited By (2)
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| CN114314928A (en) * | 2022-01-04 | 2022-04-12 | 湖南烯富环保科技有限公司 | Integrated production line and method for removing chloride ions and regenerating dechlorination agent from dechlorination slag |
| CN114314928B (en) * | 2022-01-04 | 2023-09-08 | 湖南烯富环保科技有限公司 | Integrated production line and method for chloride ion removal and chlorine removal slag regeneration chlorine removal agent |
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