CN113262630A - Denitration equipment for solving problem of high ammonia escape in flue gas of waste incineration plant - Google Patents
Denitration equipment for solving problem of high ammonia escape in flue gas of waste incineration plant Download PDFInfo
- Publication number
- CN113262630A CN113262630A CN202110515985.1A CN202110515985A CN113262630A CN 113262630 A CN113262630 A CN 113262630A CN 202110515985 A CN202110515985 A CN 202110515985A CN 113262630 A CN113262630 A CN 113262630A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- waste incineration
- ammonia
- catalyst module
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000003546 flue gas Substances 0.000 title claims abstract description 27
- 238000004056 waste incineration Methods 0.000 title claims abstract description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 50
- 230000003197 catalytic effect Effects 0.000 claims abstract description 31
- 239000000428 dust Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000002243 precursor Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910021380 Manganese Chloride Inorganic materials 0.000 claims description 4
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 claims description 4
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical group [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims description 4
- 238000000975 co-precipitation Methods 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 4
- 229940099607 manganese chloride Drugs 0.000 claims description 4
- 235000002867 manganese chloride Nutrition 0.000 claims description 4
- 239000011565 manganese chloride Substances 0.000 claims description 4
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003980 solgel method Methods 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- JMXKSZRRTHPKDL-UHFFFAOYSA-N titanium ethoxide Chemical compound [Ti+4].CC[O-].CC[O-].CC[O-].CC[O-] JMXKSZRRTHPKDL-UHFFFAOYSA-N 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 27
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010531 catalytic reduction reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/102—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/2073—Manganese
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to the technical field of flue gas denitration, in particular to denitration equipment for solving high ammonia escape in flue gas of a waste incineration plant, which mainly refers to an SCR (selective catalytic reduction) catalytic tower at the rear side of a bag-type dust remover, wherein one or more layers of catalyst modules are arranged in the SCR catalytic tower, the catalyst is an ultralow-temperature Mn-based catalyst, and a straight way form in the catalyst modules is changed into a smooth curve form. The system has simple structure and less configuration, directly solves the problem of high ammonia escape at the tail part of the chimney, and can further reduce the emission concentration of nitrogen oxides in the tail gas; in addition, because no extra heating steam consumption and ammonia water consumption exist, the equipment investment and operation and maintenance cost can be saved for a waste incineration plant, and obvious economic benefit and environmental protection benefit are realized.
Description
Technical Field
The invention relates to the technical field of flue gas denitration, in particular to denitration equipment for solving the problem of high ammonia escape in flue gas of a waste incineration plant.
Background
After the waste incineration industry in China develops for about twenty years, nearly 500 waste incineration plants are built at present, and along with the development of the government, the government supervision is increasingly strengthened. The emission index of nitrogen oxides is 250mg/Nm specified in national standards of waste incineration3In recent years, the Hebei and Hainan successively increase the standard to 120mg/Nm3Henan also refers to 100mg/Nm3. In the "atmospheric pollution discharge Standard for incineration of domestic waste" (examination of comments) released recently in Tianjin City, the standard of nitrogen oxides was even up to 80mg/Nm3. The original waste incineration power generation industry has a central financial endorsement, and the current subsidies of electricity price gradually quit the established bureau. Therefore, the electricity selling income of the incineration plant is further reduced on one side, the requirement for environmental protection upgrading is higher and higher on the other side, and enterprises face great capital pressure for environmental protection upgrading and reconstruction.
The SNCR denitration is configured in the conventional incineration plant, and the nitrogen oxide can be controlled to be 200mg/Nm3Within the range of 150mg/Nm if the added flue gas recirculation is normally used3Within. Further, if nitrogen oxide is to be controlled to 100mg/Nm3Even 80mg/Nm3At the following levels, additional SCR or excess ammonia injection is required. The additional arrangement of the SCR system brings extremely high investment and operation cost pressure, and particularly, a large amount of boiler steam is consumed to improve the smoke temperature, so that the utilization rate is not high at present. In order to reach the standard, incineration plants generally adopt excess ammonia injection through SNCRAt present, the problem of overproof ammonia escape is caused, and some ammonia escape even reaches 20mg/Nm3This causes an extremely heavy ammonia odor in the fly ash. At present, partial provinces start to monitor ammonia escape on line, which brings a certain test to incineration plants which are not improved in standard, so that the demand for denitration equipment for solving the problem of high ammonia escape in flue gas of waste incineration plants is increasing day by day.
Disclosure of Invention
The invention aims to provide denitration equipment for solving the problem of high ammonia escape in flue gas of a waste incineration plant so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a solve high denitration device of ammonia escape in waste incineration plant flue gas, includes the SCR catalytic tower, SCR catalytic tower front side is equipped with the sack cleaner, be equipped with the catalyst module that one deck or multilayer level set up in the SCR catalytic tower, SCR catalytic tower top side is equipped with the thermometer, SCR catalytic tower rear side is equipped with the draught fan, sack cleaner, SCR catalytic tower, draught fan all communicate there is the flue, the inboard of flue is equipped with electric valve, the top side and the bottom side of SCR catalytic tower all are equipped with the thermometer.
Preferably, the stable operation temperature range of the catalyst module is 130-200 ℃, and the temperature range is the same as the smoke temperature range of the smoke at the outlet of the bag-type dust collector 1.
Preferably, the catalyst module composition comprises MnO2And TiO2Wherein MnO is2The base precursor is water-soluble manganese chloride or manganese nitrate, and the content of the base precursor in the finished catalyst module is 1-20%; TiO 22The base precursor is an ammonium metavanadate or ethyl titanate carrier, and the content of the base precursor in a finished product of the catalyst module is 10-50%. The catalyst module is prepared by adopting one or more of acetic acid, ethanol and deionized water as a solvent through a sol-gel method, a coprecipitation method or an impregnation method.
Preferably, the inner side of the catalyst module is provided with a flue gas channel which is arranged in a honeycomb smooth curve shape.
Preferably, ammonia gas escaping directly from ammonia is used as an ammonia source to participate in the catalytic denitration reaction, and a steam heating system and an ammonia spraying system do not need to be matched.
Compared with the prior art, the invention has the beneficial effects that:
1. the system has simple structure and less configuration, directly solves the problem of high ammonia escape at the tail part of the chimney, and can further reduce the emission concentration of nitrogen oxides in the tail gas; in addition, because no extra heating steam consumption and ammonia water consumption are provided, the equipment investment and operation and maintenance cost can be saved for the waste incineration plant, and obvious economic benefit and environmental protection benefit can be realized.
2. The invention provides an alternative new method for the waste incineration flue gas purification process and provides a new idea for further improvement of the technology in the industry.
Drawings
FIG. 1 is a right side view of a process system of the present invention;
fig. 2 is a schematic view of the internal structure of the catalyst module of the present invention.
In fig. 1: the system comprises a bag-type dust collector, a 2-SCR catalytic tower, a 3-catalyst module, a 4-induced draft fan, a 5-flue, a 6-electric valve and a 7-thermometer.
Detailed Description
Referring to fig. 1-2, the present invention provides a technical solution:
the utility model provides a solve high denitration device of ammonia escape in waste incineration plant flue gas, includes SCR catalytic tower 2, 2 front sides of SCR catalytic tower are equipped with sack cleaner 1, be equipped with the catalyst module 3 that one deck or multilayer level set up in the SCR catalytic tower 2, 2 top sides of SCR catalytic tower are equipped with the thermometer, 2 rear sides of SCR catalytic tower are equipped with draught fan 4, sack cleaner 1, SCR catalytic tower 2, draught fan 4 all communicate there is flue 5, the inboard of flue 5 is equipped with electric valve 6, the top side and the bottom side of SCR catalytic tower 2 all are equipped with thermometer 7
The stable operation temperature range of the catalyst module 3 is 130-200 ℃, the temperature range is the same as the smoke temperature range of the smoke at the outlet of the bag-type dust collector 1, the arrangement is favorable for saving fuel, and the reaction system is fully utilizedThe catalyst module 3 comprises MnO2And TiO2Wherein MnO is2The base precursor is water-soluble manganese chloride or manganese nitrate, and the content of the base precursor in the finished catalyst module 3 is 1-20%; TiO 22The base precursor is an ammonium metavanadate or ethyl titanate carrier, and the content of the base precursor in the finished product of the catalyst module 3 is 10-50%. One or more of acetic acid, ethanol and deionized water are used as solvents in the preparation process of the catalyst module 3, the catalyst module is prepared by a sol-gel method, a coprecipitation method or an impregnation method, the arrangement is favorable for enhancing the catalytic effect, a flue gas channel is formed in the inner side of the catalyst module 3, the flue gas channel is in a honeycomb-shaped smooth curve-shaped arrangement, the arrangement is favorable for increasing the contact area of the catalyst, ammonia gas escaping from the ammonia directly serves as an ammonia source to participate in catalytic denitration reaction, a steam heating system and an ammonia spraying system do not need to be matched, and the arrangement is favorable for saving energy, reducing emission and purifying the environment.
The working process is as follows: in the invention, an SCR catalytic tower 2 is additionally arranged behind a bag-type dust collector 1 for purifying flue gas of a waste incineration plant only provided with SNCR and in front of an induced draft fan 4, and a steam heating system and an ammonia spraying system do not need to be matched, as shown in figure 1. The SCR catalytic tower 2 herein has the following features:
firstly, the stable operation temperature of the catalyst is about 130-. The method has the greatest benefit that a steam system is not required to be added to improve the smoke temperature, so that the operation cost is greatly reduced.
Secondly, the system does not need to be provided with an ammonia spraying system, and the ammonia gas which escapes from the ammonia directly is used as an ammonia source to participate in the catalytic denitration reaction, so that the operation cost is further reduced. The verification experiment was as follows:
spraying 10L/h of 20% concentrated ammonia water to an SCR tower of a 500 ton/day incineration line, wherein the density of the concentrated ammonia water is 0.92kg/L, and then spraying pure NH3The mass flow rate is 1.84kg/h divided by about 10 ten thousand Nm3The smoke gas amount per hour is 18.4mg/Nm3The ammonia gas concentration of (2). Conversely, if the ammonia escaping from the chimney reaches more than 20mg/Nm3The method is equivalent to spraying more than 10L/h of 20% concentrated ammonia water. In an actual 500 ton/day burning line, under the coordination of the SNCR system, the ammonia injection amount of the SCR system is also at a level of 10-20L/h, namely, the escaped ammonia just meets the ammonia injection amount required by the SCR system.
Thirdly, the selected catalyst is a Mn-based catalyst which is a water-resistant and sulfur-resistant SCR denitration catalyst with low temperature and wide active temperature window, and the manganese-based catalyst has MnO2/TiO2: wherein the Mn-based precursor is water-soluble manganese chloride or manganese nitrate, and the content of the Mn-based precursor in a finished catalyst product is 1-20%; TiO 22The base precursor is ammonium metavanadate or an ethyl titanate carrier, and the content of the base precursor in a finished catalyst product is 10% -50%. One or more of acetic acid, ethanol and deionized water are used as solvents, and the low-temperature wide-activity temperature window SCR denitration catalyst is prepared by a sol-gel method, a coprecipitation method or an impregnation method. The prepared catalyst has denitration activity of more than 60-95% at the temperature of 130-200 ℃, and SO is at high temperature2The oxidation rate is less than 1 percent, and the water-resistant and sulfur-resistant performance is better. Different from the conventional vanadium-titanium based catalyst, the catalyst can ensure that better water resistance and sulfur resistance and higher denitration efficiency can be maintained at lower operating temperature.
Fourthly, the channel form of the system for smoke circulation adopts a honeycomb-shaped bent channel structure, which is different from the traditional honeycomb-shaped straight channel form, and is shown in the following figure 2. On the premise of ensuring the effect, the investment cost can be obviously reduced when the dosage of the catalyst is as small as possible. In order to increase the contact area and the reaction time of the flue gas and the catalyst as much as possible, the internal structure of the catalyst does not adopt an original straight way form or a bevel form, because the bevel form has a bevel which is artificially manufactured, the flue gas resistance can be obviously increased, dust is easily accumulated on the bevel part, and a smooth curve form is adopted, so that the contact area can be increased, the reaction time can be prolonged, the flue gas resistance can be reduced as much as possible, the dust accumulation can be reduced, and the denitration reaction efficiency can be improved. It should be noted that the smooth curve form in the method is not limited to specific size requirements such as curve radius, smoothness and the like, and any design or adjustment with an approximate form should be classified as a smooth curve form.
The selected catalyst is an ultralow temperature catalyst, so that stable operation can be ensured within the range of 130-200 ℃, and higher nitrogen oxide removal efficiency is realized. Flue gas enters the SCR tower from the inlet of the tower, and when the flue gas passes through the smooth curve of the catalyst in the tower, ammonia escaping from the bag-type dust collector and nitrogen oxides react in the curve of the catalyst, so that ammonia escaping and nitrogen oxides are reduced at the same time, and the two aims are fulfilled. When the efficiency of the catalyst is reduced, offline ash removal and heating regeneration can be considered during overhaul so as to recover the activity and the efficiency of the catalyst.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (5)
1. The utility model provides a solve high denitration device of ammonia escape in waste incineration factory flue gas, includes SCR catalytic tower (2), its characterized in that: SCR catalytic tower (2) front side is equipped with sack cleaner (1), be equipped with catalyst module (3) that one deck or multilayer level set up in SCR catalytic tower (2), SCR catalytic tower (2) top side is equipped with the thermometer, SCR catalytic tower (2) rear side is equipped with draught fan (4), sack cleaner (1), SCR catalytic tower (2), draught fan (4) all communicate there are flue (5), the inboard of flue (5) is equipped with electric valve (6), the top side and the bottom side of SCR catalytic tower (2) all are equipped with thermometer (7).
2. The denitration device for solving the problem of high ammonia escape in the flue gas of the waste incineration plant according to claim 1, characterized in that: the stable operation temperature range of the catalyst module (3) is 130-200 ℃, and the temperature range is the same as the smoke temperature range of the smoke at the outlet of the bag-type dust collector (1).
3. The denitration device for solving the problem of high ammonia escape in the flue gas of the waste incineration plant according to claim 1, characterized in that: the catalyst module (3) comprises MnO2And TiO2Wherein MnO is2The base precursor is water-soluble manganese chloride or manganese nitrate, and the content of the base precursor in the finished catalyst module (3) is 1-20%; TiO 22The base precursor is an ammonium metavanadate or ethyl titanate carrier, and the content of the base precursor in a finished product of the catalyst module (3) is 10-50%. In the preparation process of the catalyst module (3), one or more of acetic acid, ethanol and deionized water are used as a solvent, and the catalyst module is prepared by a sol-gel method, a coprecipitation method or an impregnation method.
4. The denitration device for solving the problem of high ammonia escape in the flue gas of the waste incineration plant according to claim 1, characterized in that: the inner side of the catalyst module (3) is provided with a flue gas channel which is arranged in a honeycomb smooth curve shape.
5. The denitration device for solving the problem of high ammonia escape in the flue gas of the waste incineration plant according to claim 1, characterized in that: the ammonia gas escaping from the ammonia directly is used as an ammonia source to participate in the catalytic denitration reaction, and a steam heating system and an ammonia spraying system are not required to be matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515985.1A CN113262630A (en) | 2021-05-12 | 2021-05-12 | Denitration equipment for solving problem of high ammonia escape in flue gas of waste incineration plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110515985.1A CN113262630A (en) | 2021-05-12 | 2021-05-12 | Denitration equipment for solving problem of high ammonia escape in flue gas of waste incineration plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113262630A true CN113262630A (en) | 2021-08-17 |
Family
ID=77230521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110515985.1A Pending CN113262630A (en) | 2021-05-12 | 2021-05-12 | Denitration equipment for solving problem of high ammonia escape in flue gas of waste incineration plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113262630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116440698A (en) * | 2023-06-14 | 2023-07-18 | 北京华宇辉煌生态环保科技股份有限公司 | Dedusting and denitration equipment, and smoke and odor cooperative treatment system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203935782U (en) * | 2014-06-18 | 2014-11-12 | 上海绿晖环保科技有限公司 | MSW Incineration Plant low-temperature SCR equipment for denitrifying flue gas |
| US20150265969A1 (en) * | 2014-03-24 | 2015-09-24 | Johnson Matthey Public Limited Company | Catalyst for treating exhaust gas |
| CN107684891A (en) * | 2017-09-26 | 2018-02-13 | 苏跃进 | Honeycomb support and carrier former, fluid catalyst reaction unit |
| CN109745855A (en) * | 2018-12-29 | 2019-05-14 | 安徽工业大学 | A kind of sintering flue gas SOX、NOXJoint emission-reducing system |
| CN111026017A (en) * | 2019-12-12 | 2020-04-17 | 上海康恒环境股份有限公司 | Double-process combined denitration interlocking control system for tail gas treatment of waste incineration plant |
-
2021
- 2021-05-12 CN CN202110515985.1A patent/CN113262630A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150265969A1 (en) * | 2014-03-24 | 2015-09-24 | Johnson Matthey Public Limited Company | Catalyst for treating exhaust gas |
| CN203935782U (en) * | 2014-06-18 | 2014-11-12 | 上海绿晖环保科技有限公司 | MSW Incineration Plant low-temperature SCR equipment for denitrifying flue gas |
| CN107684891A (en) * | 2017-09-26 | 2018-02-13 | 苏跃进 | Honeycomb support and carrier former, fluid catalyst reaction unit |
| CN109745855A (en) * | 2018-12-29 | 2019-05-14 | 安徽工业大学 | A kind of sintering flue gas SOX、NOXJoint emission-reducing system |
| CN111026017A (en) * | 2019-12-12 | 2020-04-17 | 上海康恒环境股份有限公司 | Double-process combined denitration interlocking control system for tail gas treatment of waste incineration plant |
Non-Patent Citations (1)
| Title |
|---|
| 张增志等: "《中国战略性新兴产业.新材料.环境工程材料》", 30 November 2018 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116440698A (en) * | 2023-06-14 | 2023-07-18 | 北京华宇辉煌生态环保科技股份有限公司 | Dedusting and denitration equipment, and smoke and odor cooperative treatment system and method |
| CN116440698B (en) * | 2023-06-14 | 2023-09-08 | 北京华宇辉煌生态环保科技股份有限公司 | Dedusting and denitration equipment, and smoke and odor cooperative treatment system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105107518A (en) | Synergetic denitration and demercuration catalyst for coal-fired power plant flue gas and preparation method thereof | |
| CN102580526B (en) | Photocatalysis reduction method and device for CO2 in flue gas in oxygen-enriched combustion power plant | |
| CN204865783U (en) | Low temperature flue gas denitration catalytic reaction device | |
| CN113262630A (en) | Denitration equipment for solving problem of high ammonia escape in flue gas of waste incineration plant | |
| CN207169428U (en) | SCR catalytic reactors | |
| CN102755821A (en) | Carbon calcining furnace waste gas desulfurizing and dust-removing method and device | |
| CN209576319U (en) | A kind of internal combustion engine nitrogen oxides control system efficiently without secondary pollution | |
| CN208482234U (en) | A kind of flue gas wet denitration device | |
| CN201776085U (en) | Heating type denitration device | |
| CN111550819A (en) | Ultra-low emission system of supercritical carbon dioxide coal-fired boiler flue gas | |
| CN216825593U (en) | Coal fired boiler flue gas desulfurization denitration cooperative processing system | |
| CN202057204U (en) | Waste gas desulfuration and dust control device of carbon calcining furnace | |
| CN210786895U (en) | Multi-pollutant combined removing device for sintering waste gas of electroplating sludge | |
| CN207865437U (en) | A kind of storage oxygen combustion energy saving emission-reducing system using clean energy resource electric power | |
| CN210473547U (en) | Gas boiler removes CO and takes off NOx integration purifier | |
| CN203710904U (en) | Transverse semi-drying desulfurization device for tail flue of boiler | |
| CN206660956U (en) | A kind of device of low temperature class catalytic gas phase oxidation removing flue gas multiple pollutant | |
| CN209317409U (en) | A kind of flue gas desulfurization and denitrification integrated apparatus | |
| CN207745694U (en) | A kind of denitrating flue gas desulfurization process system | |
| CN216726294U (en) | Supporting flue gas of boiler purifies guide structure and gas cleaning system fast | |
| CN221788816U (en) | High-efficient ozone desulfurization denitration system of low temperature kiln flue gas | |
| CN209865730U (en) | Wet flue gas desulfurization system for sintering machine | |
| CN215864700U (en) | Glass kiln exhaust-heat boiler heat exchange tube box equipment capable of adjusting flue gas denitration temperature | |
| CN215352965U (en) | Flue gas deacidification, denitration and dust removal integrated system of biomass boiler | |
| CN221771927U (en) | Combined removing device for CO and NOX in sintering flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210817 |