CN211635982U - Gas boiler flue gas denitrification facility - Google Patents
Gas boiler flue gas denitrification facility Download PDFInfo
- Publication number
- CN211635982U CN211635982U CN202020019386.1U CN202020019386U CN211635982U CN 211635982 U CN211635982 U CN 211635982U CN 202020019386 U CN202020019386 U CN 202020019386U CN 211635982 U CN211635982 U CN 211635982U
- Authority
- CN
- China
- Prior art keywords
- gas
- pipe
- flue gas
- boiler flue
- gas boiler
- 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.)
- Active
Links
Images
Abstract
A gas boiler flue gas denitration device comprises a gas boiler and a liquid ammonia storage tank, wherein a purge gas pipe is arranged at the upper part of the liquid ammonia storage tank and is connected to a smoke exhaust pipeline of the gas boiler; the purge gas pipe is provided with a stop valve and a flowmeter. The utility model provides a gas boiler flue gas denitrification facility utilizes the speed of the liquid ammonia storage tank to bleed and carry out preliminary absorption to the flue gas, then again through spraying, carries out the secondary and adsorbs, adsorbs through the book at last again, the emission of reduction nitrogen oxide that can great degree.
Description
Technical Field
The utility model relates to a technical field, especially a gas boiler flue gas denitration device are handled to flue gas.
Background
With the increasing importance of the state on environmental protection, the atmospheric pollution control of the boiler is not slow at all. In the emission standard of atmospheric pollutants for boilers GB 13271-2014, the nation has strict requirements on the contents of dust, nitrogen oxides and sulfides in the tail gas discharged by the gas boiler. For general enterprises, a great deal of cost is needed to purchase a boiler with low smoke emission again, so that the equipment of the gas-fired boiler needs to be modified, and a proper denitration process and raw materials are selected to achieve standard emission of smoke.
Disclosure of Invention
The utility model aims to solve the technical problem that a gas boiler flue gas denitrification facility is provided, utilizes the swift transformation technique of economy, provides the raw materials selection that synthetic ammonia factory obtained easily simultaneously for gas boiler atmosphere pollution's environmental protection is renovated, reduces the nitrogen oxide in the boiler flue gas, makes the nitrogen oxide discharge to reach standard in the flue gas.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a gas boiler flue gas denitration device comprises a gas boiler and a liquid ammonia storage tank, wherein a purge gas pipe is arranged at the upper part of the liquid ammonia storage tank and is connected to a smoke exhaust pipeline of the gas boiler; the purge gas pipe is provided with a stop valve and a flowmeter.
Preferably, a liquid level meter, a safety valve and a pressure gauge are arranged on the liquid ammonia storage tank.
Preferably, the exhaust pipe of the gas boiler is connected with the tail gas absorption box, a spray pipe is arranged in the tail gas absorption box, a plurality of spray heads are arranged on the spray pipe, the spray pipe is connected with the liquid ammonia storage tank through a pipeline, and a water pump is arranged on the pipeline.
Preferably, the output end of the tail gas absorption tank is connected to the adsorption water tank through a pipeline.
Preferably, an overflow pipe is further connected in the tail gas absorption box and is connected to the waste liquid collection box.
Preferably, the middle part of the overflow pipe is of a U-shaped structure.
Preferably, the overflow pipe is arranged below the air inlet and the air outlet of the tail gas absorption box.
Preferably, the purge gas pipe is further provided with a self-regulating valve.
The utility model provides a gas boiler flue gas denitrification facility utilizes the speed of the liquid ammonia storage tank to bleed and carry out preliminary absorption to the flue gas, then again through spraying, carries out the secondary and adsorbs, adsorbs through the book at last again, the emission of reduction nitrogen oxide that can great degree.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, a flue gas denitration device for a gas boiler comprises a gas boiler 1 and a liquid ammonia storage tank 2, wherein a purge gas pipe 3 is arranged at the upper part of the liquid ammonia storage tank 2, and the purge gas pipe 3 is connected to a smoke exhaust pipeline of the gas boiler 1; the purge gas pipe 3 is provided with a stop valve 4 and a flowmeter 5.
Preferably, the liquid ammonia storage tank 2 is provided with a liquid level meter 6, a safety valve 7 and a pressure gauge 8.
Preferably, the exhaust pipe of the gas boiler 1 is connected with the tail gas absorption box 9, a spray pipe 10 is arranged in the tail gas absorption box 9, a plurality of spray heads 11 are arranged on the spray pipe 10, the spray pipe 10 is connected with the liquid ammonia storage tank 2 through a pipe, and a water pump 12 is arranged on the pipe.
Preferably, the output end of the tail gas absorption tank 9 is connected to an absorption water tank 13 through a pipeline.
Preferably, an overflow pipe 14 is further connected in the tail gas absorption box 9, and the overflow pipe 14 is connected to a waste liquid collection box 15. The ammonia liquid after being sprayed flows into a waste liquid collecting box 15 for collection.
Preferably, the central portion of the overflow tube 14 is of a U-shaped configuration. The U-shaped structure plays a role in return bending and prevents gas from being discharged into the waste liquid collecting box 15.
Preferably, the overflow pipe 14 is provided below the air inlet and the air outlet of the exhaust gas absorption tank 9. Liquid flows out of the overflow tube 14 below and gas flows out of the tube above.
Preferably, the purge gas pipe 3 is further provided with a self-regulating valve 16.
When the ammonia-nitrogen-containing gas boiler is used, the gas boiler keeps normal combustion, the temperature in the boiler is controlled to be 850-1000 ℃, and ammonia and NOx are subjected to chemical reaction: 4NH3+4NO + O2 → 4N2+6H2O, 8NH3+6NO2 → 7N2+12H2O ensure that NOx emissions reach the standard.
The stop valve of the purge gas entering the gas boiler is fully opened, the flow of the purge gas is controlled by a self-regulating valve, and a flowmeter 8 is arranged on the purge gas pipe for monitoring the flow of the purge gas. The water pump pumps the liquid ammonia into the spray pipe, and the liquid ammonia is sprayed out from the spray head and is absorbed in the tail gas absorption box 9.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (8)
1. The utility model provides a gas boiler flue gas denitrification facility, includes gas boiler (1), its characterized in that: the device is characterized by also comprising a liquid ammonia storage tank (2), wherein a purge gas pipe (3) is arranged at the upper part of the liquid ammonia storage tank (2), and the purge gas pipe (3) is connected into a smoke exhaust pipeline of the gas boiler (1); the purge gas pipe (3) is provided with a stop valve (4) and a flowmeter (5).
2. The gas boiler flue gas denitration device of claim 1, characterized in that: and a liquid level meter (6), a safety valve (7) and a pressure gauge (8) are arranged on the liquid ammonia storage tank (2).
3. The gas boiler flue gas denitration device of claim 1, characterized in that: the exhaust pipe of gas boiler (1) is connected with tail gas absorption case (9), is equipped with shower (10) in tail gas absorption case (9), is equipped with a plurality of shower nozzles (11) on shower (10), and shower (10) are connected with liquid ammonia storage tank (2) through the pipeline, are equipped with water pump (12) on the pipeline.
4. The gas boiler flue gas denitration device of claim 3, characterized in that: the output end of the tail gas absorption box (9) is connected to an absorption water tank (13) through a pipeline.
5. The gas boiler flue gas denitration device of claim 3, characterized in that: an overflow pipe (14) is further connected in the tail gas absorption box (9), and the overflow pipe (14) is connected to a waste liquid collection box (15).
6. The gas boiler flue gas denitration device of claim 5, characterized in that: the middle part of the overflow pipe (14) is of a U-shaped structure.
7. The gas boiler flue gas denitration device of claim 5, characterized in that: the overflow pipe (14) is arranged below the air inlet and the air outlet of the tail gas absorption box (9).
8. The gas boiler flue gas denitration device of claim 1, characterized in that: the purge gas pipe (3) is also provided with a self-regulating valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020019386.1U CN211635982U (en) | 2020-01-06 | 2020-01-06 | Gas boiler flue gas denitrification facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020019386.1U CN211635982U (en) | 2020-01-06 | 2020-01-06 | Gas boiler flue gas denitrification facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211635982U true CN211635982U (en) | 2020-10-09 |
Family
ID=72703579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020019386.1U Active CN211635982U (en) | 2020-01-06 | 2020-01-06 | Gas boiler flue gas denitrification facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211635982U (en) |
-
2020
- 2020-01-06 CN CN202020019386.1U patent/CN211635982U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205495310U (en) | Coke oven flue desulphurization of exhaust gas deNOx systems | |
| CN203916431U (en) | A kind of gaseous oxidation is in conjunction with the flue gas combined desulfurization and denitration device of wet absorption | |
| CN106110850A (en) | A kind of flue gas pollutant minimum discharge system and method | |
| CN206965521U (en) | A kind of denitrification apparatus quoted high-temperature flue gas and carry out urea pyrolysis ammonia | |
| CN204933256U (en) | A kind of heavy oil power-plant flue gas denitrating system | |
| CN211635982U (en) | Gas boiler flue gas denitrification facility | |
| CN201776085U (en) | Heating type denitration device | |
| CN104386708B (en) | A kind of urea hydrolysis ammonia producing system being applied to thermal power plant's denitration and technique | |
| CN205308135U (en) | Can realize series connection, SOx/NOx control system that connects in parallel | |
| CN202724990U (en) | Flue gas denitration system for coal-fired power plant | |
| CN210410188U (en) | Active burnt flue gas desulfurization denitration integration processing system | |
| CN204563937U (en) | A kind of low-temperature smoke air SCR denitrating system | |
| CN204469547U (en) | A kind of high-temperature flue gas that adopts is as the urea pyrolysis ammonia device of thermal source | |
| CN207356902U (en) | One kind catalysis denitrating flue gas desulfurizer | |
| CN208720184U (en) | A kind of waste heat boiler of nitrogen oxides minimum discharge | |
| CN207680349U (en) | A kind of combined desulfurization and denitration mercury removal device using pre-oxidation process | |
| CN112628698A (en) | Novel DCC device exhaust-heat boiler | |
| CN205886558U (en) | Ultralow discharge system of smoke pollutants | |
| CN206229206U (en) | The SCR denitration device of boiler smoke | |
| CN201823478U (en) | Integrated treatment device for flue gas denitration | |
| CN205586833U (en) | Urea method SCR flue gas denitration system of thermal power factory combustor | |
| CN216987031U (en) | Boiler denitration system | |
| CN216909861U (en) | Flue gas denitration ammonia supply system of thermal power factory | |
| CN204891565U (en) | Flue gas desulfurization denitrification facility | |
| CN104289104A (en) | SCR flue gas denitration system for thermal power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |