CN114234221A - Combustion engine starting low-temperature flue gas nitrogen dioxide eliminating system - Google Patents
Combustion engine starting low-temperature flue gas nitrogen dioxide eliminating system Download PDFInfo
- Publication number
- CN114234221A CN114234221A CN202111486332.1A CN202111486332A CN114234221A CN 114234221 A CN114234221 A CN 114234221A CN 202111486332 A CN202111486332 A CN 202111486332A CN 114234221 A CN114234221 A CN 114234221A
- Authority
- CN
- China
- Prior art keywords
- ozone generator
- nitrogen dioxide
- flue gas
- chimney
- temperature flue
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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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
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/404—Nitrogen oxides other than dinitrogen oxide
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2215/00—Preventing emissions
- F23J2215/10—Nitrogen; Compounds thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention provides a combustion engine starting low-temperature flue gas nitrogen dioxide eliminating system, which relates to the field of flue gas purification and comprises a gas turbine, a waste heat boiler, a chimney and an ozone generator, wherein one end of the gas turbine is connected with the waste heat boiler, the other end of the waste heat boiler is connected with the chimney, a plurality of groups of spray heads are arranged in the chimney, the spray heads are connected with the ozone generator outside the chimney through a gas transmission pipeline, the ozone generator is connected with a busbar, a plurality of oxygen cylinders are connected on the busbar, and the ozone generator is connected with a cooling system. The ozone and the nitrogen dioxide provided by the ozone generator can carry out chemical reaction at the temperature of more than 90 ℃, so that the aim of removing the nitrogen dioxide in a low-temperature flue gas stage is fulfilled, the ozone generator is environment-friendly, and the harm to the health of people is avoided.
Description
Technical Field
The invention relates to the field of flue gas purification, in particular to a low-temperature flue gas nitrogen dioxide eliminating system for starting a combustion engine.
Background
In the starting stage of the gas turbine, partial nitrogen dioxide is generated due to insufficient combustion of the gas turbine, and in order to further reduce the emission of nitrogen oxides, the flue gas after combustion must be subjected to denitration treatment. Most of gas turbine flue gas denitration systems adopt a process of adding a denitration catalyst into urea. Because of the characteristics of gas turbine power plants, most of the gas turbine power plants are built in areas with dense personnel, and with the increasing attention of people on environmental protection, the yellow smoke of a gas turbine at the starting stage is often complained by environmental protection, so that the removal of the yellow smoke at the gas starting stage becomes the inevitable choice under the current environmental protection situation. The existing denitration equipment can not remove nitrogen dioxide in the low-temperature flue gas stage of starting because the effective temperature of the catalyst is over 240 ℃ and the flue gas temperature of the unit in the starting stage is less than 200 ℃, and the flue gas can be obviously yellow. In summary, a technology capable of removing nitrogen dioxide in the low-temperature flue gas stage of the gas turbine start-up is yet to be invented.
Disclosure of Invention
The invention provides a gas turbine starting low-temperature flue gas nitrogen dioxide elimination system, which solves the problem that the existing nitrogen dioxide removal technology cannot remove nitrogen dioxide in a low-temperature flue gas stage.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a gas turbine starts low temperature flue gas nitrogen dioxide elimination system, includes gas turbine, exhaust-heat boiler, chimney and ozone generator, exhaust-heat boiler is connected to gas turbine one end, the last chimney that is provided with of exhaust-heat boiler, be provided with a plurality of groups shower nozzle in the chimney, the shower nozzle passes through the outer ozone generator of gas transmission pipeline connection chimney, ozone generator connects the busbar, be connected with a plurality of oxygen cylinder on the busbar, ozone generator links to each other with cooling system.
Preferably, the cooling system comprises a closed cold water pump and a plate heat exchanger, the output end of the closed cold water pump is connected with the cooling end of the plate heat exchanger, and the ozone generator is connected with the cooled end of the plate heat exchanger.
Preferably, the gas transmission pipeline is a stainless steel pipeline.
Preferably, the spray heads are stainless steel spray heads, the number of groups of the spray heads is eight, and the number of each group of the spray heads is two.
Preferably, the spray head is arranged in the middle of the chimney.
The invention has the beneficial effects that:
the ozone generator generates ozone, the ozone reacts with nitrogen dioxide in the waste heat boiler, and generated colorless gas is discharged through a chimney;
the ozone and the nitrogen dioxide can carry out chemical reaction at normal temperature and normal pressure, and the aim of removing the nitrogen dioxide at a low-temperature flue gas stage is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the structure of the present invention.
The reference numbers illustrate:
1. a gas turbine; 2. a waste heat boiler; 3. a chimney; 4. a spray head; 5. a gas pipeline; 6. an ozone generator; 7. an oxygen cylinder; 8. a bus bar; 9. a plate heat exchanger; 10. the cold water pump was turned off.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The invention provides a technical scheme that: the utility model provides a combustion engine starts low temperature flue gas nitrogen dioxide elimination system, as shown in figure 1, including gas turbine 1, exhaust-heat boiler 2, chimney 3 and ozone generator 6, exhaust-heat boiler 2 is connected to 1 one end of gas turbine, be provided with chimney 3 on the exhaust-heat boiler 2, be provided with a plurality of groups shower nozzle 4 in the chimney 3, shower nozzle 4 is the stainless steel shower nozzle, the group number of shower nozzle 4 is eight, and the quantity of every group shower nozzle 4 is two, shower nozzle 4 sets up in 3 middle parts of chimney. The spray head 4 is connected with an ozone generator 6 outside the chimney 3 through a gas transmission pipeline 5, and the gas transmission pipeline 5 is a stainless steel pipeline. The ozone generator 6 is connected with a busbar 8, the busbar 8 is connected with a plurality of oxygen cylinders 7, and the ozone generator 6 is connected with a cooling system. The cooling system comprises a closed cold water pump 10 and a plate heat exchanger 9, the output end of the closed cold water pump 10 is connected with the cooling end of the plate heat exchanger 9, and the ozone generator 6 is connected with the cooled end of the plate heat exchanger 9.
The closed cold water pump 10 provides cooling water for the ozone generator 6 through the plate heat exchanger 9, the gas turbine 1 burns natural gas, the generated flue gas is discharged into the waste heat boiler 2, the flue gas heats water vapor in the waste heat boiler 2, the ozone generator 6 generates ozone by using the oxygen cylinder 7, the ozone is conveyed to the middle part of the chimney 3 through a stainless steel pipeline, eight groups of spray heads 4 are arranged, and two groups are arranged in each group. The two spray heads 4 in each group are arranged one downwards and one horizontally. The ozone is evenly sprayed into the flue gas through the spray head 4, so that the nitrogen dioxide in the flue gas can be oxidized. The treated gas is discharged through a chimney.
The invention utilizes pure oxygen in an oxygen cylinder 7 to convey the pure oxygen to an ozone generator 6, the ozone generator 6 utilizes the principle of high-voltage ionization to generate ozone from the oxygen and conveys the ozone to the middle part of a chimney 3. The smoke in the start-up phase appears yellow, mainly due to the gas color of the nitrogen dioxide therein. At normal temperature and pressure, the oxidation capacity of the ozone and the nitrogen dioxide can generate oxidation reaction, thereby producing the dinitrogen pentoxide. Dinitrogen pentoxide is a colorless transparent gas, and thus successfully removes the yellow color from flue gases.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a combustion engine starts low temperature flue gas nitrogen dioxide elimination system which characterized in that: including gas turbine (1), exhaust-heat boiler (2), chimney (3) and ozone generator (6), exhaust-heat boiler (2) is connected to gas turbine (1) one end, be provided with chimney (3) on exhaust-heat boiler (2), be provided with a plurality of shower nozzles (4) of group in chimney (3), the outer ozone generator (6) of chimney (3) are connected through gas transmission pipeline (5) in shower nozzle (4), busbar (8) is connected in ozone generator (6), be connected with a plurality of oxygen cylinder (7) on busbar (8), ozone generator (6) link to each other with cooling system.
2. The combustion engine starting low-temperature flue gas nitrogen dioxide elimination system of claim 1, wherein: the cooling system comprises a closed cold water pump (10) and a plate heat exchanger (9), the output end of the closed cold water pump (10) is connected with the cooling end of the plate heat exchanger (9), and the ozone generator (6) is connected with the cooled end of the plate heat exchanger (9).
3. The combustion engine starting low-temperature flue gas nitrogen dioxide elimination system of claim 1, wherein: the gas transmission pipeline (5) is a stainless steel pipeline.
4. The combustion engine starting low-temperature flue gas nitrogen dioxide elimination system of claim 1, wherein: the spray heads (4) are stainless steel spray heads, the number of the groups of the spray heads (4) is eight, and the number of the spray heads (4) in each group is two.
5. The combustion engine starting low-temperature flue gas nitrogen dioxide elimination system of claim 1, wherein: the spray head (4) is arranged in the middle of the chimney (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486332.1A CN114234221A (en) | 2021-12-07 | 2021-12-07 | Combustion engine starting low-temperature flue gas nitrogen dioxide eliminating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486332.1A CN114234221A (en) | 2021-12-07 | 2021-12-07 | Combustion engine starting low-temperature flue gas nitrogen dioxide eliminating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114234221A true CN114234221A (en) | 2022-03-25 |
Family
ID=80753738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111486332.1A Pending CN114234221A (en) | 2021-12-07 | 2021-12-07 | Combustion engine starting low-temperature flue gas nitrogen dioxide eliminating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114234221A (en) |
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2021
- 2021-12-07 CN CN202111486332.1A patent/CN114234221A/en active Pending
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