CN111603913A - System and method for treating liquid slag discharging boiler waste gas of ozone denitration coal-fired power plant - Google Patents
System and method for treating liquid slag discharging boiler waste gas of ozone denitration coal-fired power plant Download PDFInfo
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- CN111603913A CN111603913A CN202010518429.5A CN202010518429A CN111603913A CN 111603913 A CN111603913 A CN 111603913A CN 202010518429 A CN202010518429 A CN 202010518429A CN 111603913 A CN111603913 A CN 111603913A
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- ozone
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- pipeline
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 239000002893 slag Substances 0.000 title claims abstract description 87
- 239000002912 waste gas Substances 0.000 title claims abstract description 65
- 239000007788 liquid Substances 0.000 title claims abstract description 30
- 238000007599 discharging Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000428 dust Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000779 smoke Substances 0.000 claims abstract description 13
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 9
- 230000023556 desulfurization Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 62
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 18
- 239000006200 vaporizer Substances 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 230000003009 desulfurizing effect Effects 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000005684 electric field Effects 0.000 claims description 3
- 150000002823 nitrates Chemical class 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000011017 operating method Methods 0.000 claims 1
- 238000010079 rubber tapping Methods 0.000 abstract description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003546 flue gas Substances 0.000 abstract description 5
- 238000003915 air pollution Methods 0.000 abstract 1
- 239000013049 sediment Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010884 boiler slag Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000005507 spraying 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
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- 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
-
- 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- 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
Abstract
The invention discloses a liquid slag discharging boiler waste gas treatment system and method for an ozone denitration coal-fired power plant, and the system comprises a dust remover and a desulfurization tower, wherein the desulfurization tower is connected with the dust remover through a pipeline, a draught fan is arranged on the pipeline for connecting the desulfurization tower with the dust remover, the air inlet end of the dust remover is connected with a waste gas pipeline, an ozone denitration system is arranged on the waste gas pipeline in series, the air inlet end of the waste gas pipeline is connected with a waste gas pipe connector, and a waste gas pipe adjusting door is arranged at the position, close to the position between the waste gas pipe connector and the ozone denitration system, of the waste gas pipeline. The invention ensures that slag liquid of the slag tapping boiler smoothly flows into the slag bucket, prevents the slag bucket from being polluted by high-temperature flue gas flow in the slag bucket, avoids the condition that the slag liquid is solidified and blocked due to the temperature reduction of the steam slag bucket caused by the generation of a large amount of water when the slag liquid is cooled, ensures the safe and stable operation of a unit, prevents the air pollution and solves the problem of treatment of the waste gas and the smoke dust of the slag bucket of the slag tapping boiler of the large coal-fired power plant.
Description
Technical Field
The invention relates to the technical field of liquid-state slagging boilers of coal-fired power stations, in particular to a system and a method for treating waste gas of a liquid-state slagging boiler of an ozone denitration coal-fired power station.
Background
The slag tapping boiler of the large coal-fired power plant melts the ash into a fluid state by utilizing higher hearth temperature, and the slag liquid falls into a slag pool through a slag flowing port at the bottom of the furnace, thereby achieving the purpose of reducing the volume and the weight of the ash. However, due to the liquid slag discharging characteristic of the liquid slag discharging boiler, when high-temperature slag liquid enters a slag pool, the high-temperature slag liquid is rapidly cooled when meeting water to generate a large amount of water vapor, the air flow in the slag hopper is greatly fluctuated, positive pressure is easily formed in the slag hopper, the slag liquid is prevented from flowing downwards, the temperature of a slag chamber is reduced to cause slag liquid blockage, meanwhile, exhaust gas and smoke dust in the slag hopper can also flush a fire observation hole along with the positive pressure to pollute a production site, and partial high-temperature smoke gas is also filled along with the high-temperature slag liquid entering the slag hopper, the partial high-temperature smoke gas contains a large amount of atmospheric pollutants such as dust and sulfur dioxide, and the pollutants can also flush out of the. The safe operation of the boiler is seriously influenced by the conditions, which becomes an urgent problem to be solved by the slag tapping boiler of the large-scale coal-fired power plant, so the system and the method for treating the waste gas of the slag tapping boiler of the ozone denitration coal-fired power plant are provided.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a system and a method for treating liquid slag discharging boiler waste gas of an ozone denitration coal-fired power plant.
The invention provides a liquid slag discharging boiler waste gas treatment system of an ozone denitration coal-fired power plant, which comprises a dust remover and a desulfurization tower, wherein the desulfurization tower is connected with the dust remover through a pipeline, a draught fan is arranged on the pipeline for connecting the desulfurization tower with the dust remover, the air inlet end of the dust remover is connected with a waste gas pipeline, an ozone denitration system is arranged on the waste gas pipeline in series, the air inlet end of the waste gas pipeline is connected with a waste gas pipe connector, and a waste gas pipe adjusting door is arranged at the position, close to the position between the waste gas pipe connector and the ozone denitration system, of the waste gas pipeline.
Preferably, the ozone denitration system comprises an ozone denitration reactor and an ozone generation reactor, the air outlet end of the ozone generation reactor is connected with an ozone nozzle communicated with the inside of the ozone denitration reactor, the ozone generation reactor and the ozone nozzle are connected through an ozone conveying pipeline, the air inlet end of the ozone generation reactor is connected with a vaporizer, the vaporizer is connected with an oxygen storage tank, and a pressure reducing valve is connected between the vaporizer and the ozone generation reactor.
Preferably, an exhaust gas temperature measuring point for monitoring the temperature of the exhaust gas is arranged at the exhaust gas pipe interface, and an exhaust gas flow measuring point is arranged at a position, close to the exhaust gas pipe interface, of the exhaust gas pipe, between the exhaust gas pipe interface and the exhaust gas pipe regulating valve.
Preferably, a heat-insulating refractory castable is laid in the waste gas pipeline.
Preferably, the ozone generation reactor is a water-cooling ozone generation reactor, a water inlet and a water outlet of the ozone generation reactor are provided with a heat exchanger in parallel through a pipeline, and a circulating water pump is arranged between the heat exchanger and the water inlet in series.
Preferably, an ozone temperature measuring point and an ozone pressure measuring point are connected in series on the ozone conveying pipeline.
A working method of a liquid slag discharging boiler waste gas treatment system of an ozone denitration coal-fired power plant comprises the following steps:
s1: generating ozone; oxygen is introduced into an ozone generation reactor through an oxygen storage tank and a vaporizer by a pressure reducing valve, internal circulation cooling water cooled in a heat exchanger is pumped into the ozone generation reactor by a circulating water pump to cool the reaction process, partial oxygen is converted into ozone gas in a high-frequency high-voltage electric field of the ozone generation reactor, and the ozone gas is sprayed into an ozone denitration reactor through an ozone nozzle after being monitored by an ozone temperature measuring point and an ozone pressure measuring point;
s2: carrying out ozone denitration; water vapor, exhaust gas, smoke dust and the like are sucked into an exhaust gas pipeline through an exhaust gas pipe interface and conveyed into an ozone denitration reactor, and nitrogen oxides in the exhaust gas pipeline react with ozone gas to be oxidized into high-valence nitrogen oxides to obtain mixed gas A;
s3: dedusting treatment; the mixed gas A enters a dust remover for dust removal to obtain mixed gas B;
s4: carrying out desulfurization treatment; and the mixed gas B enters the desulfurizing tower and is absorbed by the slurry to form nitrate compounds.
The beneficial effects of the invention are as follows:
1. the negative pressure and the temperature of the slag bucket are maintained when the waste gas and the smoke of the slag bucket of the slag tapping boiler are subjected to environment-friendly treatment, the slag liquid of the slag tapping boiler smoothly flows into the slag bucket, the slag bucket is prevented from being polluted by high-temperature smoke gas flow in the slag bucket, the condition that the temperature of the steam slag bucket is reduced to cause slag liquid solidification and blockage due to the generation of a large amount of water during slag liquid cooling is avoided, and the safe and stable operation of a unit is ensured.
2. Through laying adiabatic refractory castable in the exhaust gas piping, also played the guard action to the exhaust gas piping when playing the heat preservation effect, prevent that the exhaust gas piping from taking place to damage the deformation because of the high temperature, the exhaust gas piping can be with the partial high temperature flue gas in the furnace along with the slag liquid suction sediment fill in maintaining sediment fill negative pressure, maintains sediment fill temperature, prevents that the stifled sediment condition from taking place.
3. Through the environmental protection equipment such as the ozone denitration system, the dust remover and the desulfurizing tower, the waste flue gas can be subjected to pollutant purification treatment, and finally the waste flue gas can be sent into the atmosphere through a chimney, so that the atmospheric pollution is prevented, and the problem of treatment of waste gas and smoke dust of a slag bucket of a liquid-state slag discharge boiler of a large coal-fired power plant is solved.
Drawings
FIG. 1 is a schematic view of the installation of a liquid slag removal boiler waste gas treatment system of an ozone denitration coal-fired power plant according to the present invention;
FIG. 2 is a schematic diagram of a system for treating the waste gas of a liquid-state slag-off boiler of an ozone denitration coal-fired power plant.
In the figure: the device comprises a slagging boiler 1, a combustor 2, a slag flowing port 3, a waste gas pipe interface 4, a waste gas pipeline 5, a waste gas pipe regulating valve 6, a waste gas temperature measuring point 7, a waste gas flow measuring point 8, an ozone denitration reactor 9, an ozone nozzle 10, an ozone temperature measuring point 11, an ozone pressure measuring point 12, an ozone generating reactor 13, a pressure reducing valve 14, a vaporizer 15, an oxygen gas storage tank 16, a circulating water pump 17, a heat exchanger 18, a dust remover 19, an induced draft fan 20, a desulfurizing tower 21, a slag pool 22 and a slag dragging machine 23.
Detailed Description
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.
Referring to fig. 1-2, a coal fired power plant of ozone denitration slag tap boiler waste gas treatment system, including dust remover 20 and desulfurizing tower 22, pass through the tube coupling between desulfurizing tower 22 and the dust remover 20, be provided with draught fan 21 on the pipeline for connecting desulfurizing tower 22 and dust remover 20, dust remover 20 inlet end even has exhaust duct 5, the cluster is equipped with the ozone denitration system on exhaust duct 5, exhaust duct 5's inlet end even has exhaust pipe interface 4, exhaust duct 5 is close to and is equipped with waste gas pipe regulating valve 6 in the position department between exhaust pipe interface 4 and the ozone denitration system.
In the invention, the ozone denitration system comprises an ozone denitration reactor 9 and an ozone generating reactor 13, the air outlet end of the ozone generating reactor 13 is connected with an ozone nozzle 10 communicated with the inside of the ozone denitration reactor 9, the ozone generating reactor 13 and the ozone nozzle 10 are connected through an ozone conveying pipeline, the air inlet end of the ozone generating reactor 13 is connected with a vaporizer 15, the vaporizer 15 is connected with an oxygen storage tank 16, a pressure reducing valve 14 is connected between the vaporizer 15 and the ozone generating reactor 13, an exhaust gas temperature measuring point 7 used for monitoring the temperature of exhaust gas is arranged at an exhaust gas pipe interface 4, an exhaust gas flow measuring point 8 is arranged at a position of an exhaust gas pipeline 5 close to the position between the exhaust gas pipe interface 4 and an exhaust gas pipe adjusting door 6, a heat insulation refractory castable is laid in the exhaust gas pipeline 5, the heat insulation effect is achieved, the protection effect on the exhaust gas pipeline is also achieved, and the damage and deformation of the exhaust, the ozone generation reactor 13 is a water-cooling ozone generation reactor, a heat exchanger 18 is arranged at the water inlet and the water outlet of the ozone generation reactor 13 in parallel through pipelines, a circulating water pump 17 is arranged between the heat exchanger 18 and the water inlet in series, an ozone temperature measuring point 11 and an ozone pressure measuring point 12 are arranged on an ozone conveying pipeline in series, and the ozone temperature measuring point 11 and the ozone pressure measuring point 12 are used for monitoring the temperature and the pressure of ozone output by the ozone generation reactor 13.
A working method of a liquid slag discharging boiler waste gas treatment system of an ozone denitration coal-fired power plant comprises the following steps:
s1: generating ozone; oxygen is introduced into an ozone generation reactor 13 through an oxygen gas storage tank 16 and a vaporizer 15 through a pressure reducing valve 14, internal circulation cooling water cooled in a heat exchanger 18 is pumped into the ozone generation reactor 13 through a circulating water pump 17 to cool the reaction process, part of the oxygen is converted into ozone gas in a high-frequency high-voltage electric field of the ozone generation reactor 13, and the ozone gas is sprayed into an ozone denitration reactor 9 through an ozone nozzle 10 after being monitored by an ozone temperature measuring point 11 and an ozone pressure measuring point 12;
s2: carrying out ozone denitration; water vapor, exhaust gas smoke dust and the like are sucked into an exhaust gas pipeline 5 through an exhaust gas pipe interface 4 and conveyed into an ozone denitration reactor 9, and nitrogen oxides in the exhaust gas pipeline react with ozone gas to be oxidized into high-valence nitrogen oxides to obtain mixed gas A;
s3: dedusting treatment; the mixed gas A enters a dust remover 20 for dust removal to obtain mixed gas B;
s4: carrying out desulfurization treatment; the mixed gas B enters the desulfurizing tower 22 and is absorbed by the slurry to form nitrate compounds.
The boiler slag system is composed of a slag tapping boiler 1, a burner 2 and a slag tapping hole 3, the system collects high-temperature slag liquid generated by the slag tapping boiler of a large-scale coal-fired power plant during power generation and heat supply and then flows out of the slag tapping hole 3 to fall into a slag bucket, the middle part of the slag bucket is provided with a waste gas pipe interface 4, the slag bucket is communicated with a dust remover 19 by a waste gas pipe 5, the front negative pressure of the dust remover 19 is far lower than the internal pressure of the slag bucket, so that a pressure difference is formed between the dust remover 19 and the slag bucket, waste gas and smoke dust in the slag bucket can enter the dust remover 19 through the waste gas pipe 5, the negative pressure of the slag bucket is maintained, firstly, the smoke can be prevented from rushing out of the slag bucket to pollute a site, the negative pressure of the two slag buckets can extract part of the high-temperature smoke to enter the slag bucket, so that the slag tapping of the high-temperature slag liquid is ensured to be smooth, and, finally, the waste gas is sent into the atmosphere through a chimney to prevent atmospheric pollution, a heat-insulating refractory castable is laid in the waste gas pipeline 5, the heat-insulating refractory castable plays a role in protecting the waste gas pipeline 5 while playing a role in heat preservation, the waste gas pipeline 5 is prevented from being damaged and deformed due to overhigh temperature, a waste gas temperature measuring point 7 is arranged at a waste gas pipe interface 4 and used for monitoring the temperature of waste gas, boiler combustion is timely adjusted when the temperature of the waste gas is reduced, slag blockage caused by overhigh temperature in a slag hopper is prevented, a waste gas flow measuring point 8 is used for monitoring the flow of waste gas of the slag hopper, an ozone denitration reactor 9 adjusts the spraying amount of ozone according to the waste gas flow of the waste gas flow measuring point 8, a waste gas pipe adjusting door 6 is used for adjusting the flow of the waste gas pipeline 5, the situation that flame enters the slag hopper to burn the slag hopper due to overhigh negative pressure of the slag hopper is prevented, the waste gas pipeline 5 can suck part of high-temperature flue gas in, the temperature of the slag bucket is maintained, the slag blockage situation is prevented, high-temperature slag liquid falling into the slag pool 22 is accumulated at the bottom of the slag pool 22, and is taken out of the slag pool 22 through a scraper of the slag dragging machine 23 and conveyed to a transfer station to be processed by the transfer station.
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 (7)
1. The utility model provides a coal fired power plant of ozone denitration slag tap boiler waste gas treatment system, includes dust remover (20) and desulfurizing tower (22), through the tube coupling between desulfurizing tower (22) and dust remover (20), be used for connecting be provided with draught fan (21) on the pipeline of desulfurizing tower (22) and dust remover (20), its characterized in that, dust remover (20) inlet end even has exhaust duct (5), the cluster is equipped with ozone deNOx systems on exhaust duct (5), the inlet end of exhaust duct (5) even has exhaust pipe interface (4), exhaust duct (5) are close to position department between exhaust pipe interface (4) and the ozone deNOx systems and are equipped with waste pipe governing valve (6).
2. The system of claim 1, wherein the ozone denitration system comprises an ozone denitration reactor (9) and an ozone generation reactor (13), an ozone nozzle (10) communicated with the inside of the ozone denitration reactor (9) is connected to an air outlet end of the ozone generation reactor (13), the ozone generation reactor (13) and the ozone nozzle (10) are connected through an ozone conveying pipeline, a vaporizer (15) is connected to an air inlet end of the ozone generation reactor (13), an oxygen storage tank (16) is connected to the vaporizer (15), and a pressure reducing valve (14) is connected between the vaporizer (15) and the ozone generation reactor (13).
3. The system and the method for disposing the slagging tap boiler exhaust gas from the ozone denitration coal-fired power plant according to claim 2, wherein an exhaust gas temperature measuring point (7) for monitoring the exhaust gas temperature is arranged at the exhaust gas pipe interface (4), and an exhaust gas flow measuring point (8) is arranged at the position of the exhaust gas pipe (5) close to the position between the exhaust gas pipe interface (4) and the exhaust gas pipe adjusting door (6).
4. The system for treating the liquid residue discharge boiler waste gas of the ozone denitration coal-fired power plant according to claim 3, characterized in that a heat-insulating refractory castable is laid in the waste gas pipeline (5).
5. The system for treating the liquid slag discharging boiler waste gas of the ozone denitration coal-fired power plant according to claim 4, wherein the ozone generating reactor (13) is a water-cooling ozone generating reactor, a heat exchanger (18) is arranged at a water inlet and a water outlet of the ozone generating reactor (13) in parallel through a pipeline, and a circulating water pump (17) is arranged between the heat exchanger (18) and the water inlet in series.
6. The system for treating the liquid residue discharge boiler waste gas of the ozone denitration coal-fired power plant as recited in claim 5, wherein the ozone delivery pipeline is provided with an ozone temperature measuring point (11) and an ozone pressure measuring point (12) in series.
7. The operating method of the liquid residue discharge boiler waste gas treatment system of the ozone denitration coal-fired power plant according to claim 6, comprising the steps of:
s1: generating ozone; oxygen is introduced into an ozone generation reactor (13) through a pressure reducing valve (14) by an oxygen storage tank (16) and a vaporizer (15), internal circulating cooling water cooled in a heat exchanger (18) is pumped into the ozone generation reactor (13) by a circulating water pump (17) to cool the reaction process, part of oxygen is converted into ozone gas in a high-frequency high-voltage electric field of the ozone generation reactor (13), and the ozone gas is sprayed into an ozone denitration reactor (9) through an ozone nozzle (10) after being monitored by an ozone temperature measuring point (11) and an ozone pressure measuring point (12);
s2: carrying out ozone denitration; water vapor, waste gas, smoke dust and the like are sucked into a waste gas pipeline (5) through a waste gas pipe interface (4) and are conveyed into an ozone denitration reactor (9), and nitrogen oxides in the waste gas and ozone gas react to be oxidized into high-valence nitrogen oxides to obtain mixed gas A;
s3: dedusting treatment; the mixed gas A enters a dust remover (20) for dust removal to obtain mixed gas B;
s4: carrying out desulfurization treatment; the mixed gas B enters a desulfurizing tower (22) and is absorbed by the slurry to form nitrate compounds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518429.5A CN111603913A (en) | 2020-06-09 | 2020-06-09 | System and method for treating liquid slag discharging boiler waste gas of ozone denitration coal-fired power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010518429.5A CN111603913A (en) | 2020-06-09 | 2020-06-09 | System and method for treating liquid slag discharging boiler waste gas of ozone denitration coal-fired power plant |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709574A (en) * | 2016-01-27 | 2016-06-29 | 西安航天源动力工程有限公司 | Efficient stokerfeed boiler ozonation desulfurization and denitrification integrated process system |
| CN106582268A (en) * | 2016-11-15 | 2017-04-26 | 北京科技大学 | Flue gas multi-pollutant collaborative purification process using blast furnace slag sensible heat |
| CN213253788U (en) * | 2020-06-09 | 2021-05-25 | 天津华能杨柳青热电有限责任公司 | Liquid sediment boiler waste gas processing system of arranging of ozone denitration coal-fired power plant |
-
2020
- 2020-06-09 CN CN202010518429.5A patent/CN111603913A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105709574A (en) * | 2016-01-27 | 2016-06-29 | 西安航天源动力工程有限公司 | Efficient stokerfeed boiler ozonation desulfurization and denitrification integrated process system |
| CN106582268A (en) * | 2016-11-15 | 2017-04-26 | 北京科技大学 | Flue gas multi-pollutant collaborative purification process using blast furnace slag sensible heat |
| CN213253788U (en) * | 2020-06-09 | 2021-05-25 | 天津华能杨柳青热电有限责任公司 | Liquid sediment boiler waste gas processing system of arranging of ozone denitration coal-fired power plant |
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Effective date of registration: 20200927 Address after: No. 246, Xiqing Road, Xiqing District, Tianjin Applicant after: HUANONG YANGLIUQING THERMOELEC Applicant after: Xi'an Thermal Power Research Institute Co.,Ltd. Applicant after: North China branch of China Huaneng Group Co., Ltd Address before: No. 246, Xiqing Road, Xiqing District, Tianjin Applicant before: Zhou Hao |