CN201719974U - Flue gas denitration oxidizing agent distribution apparatus - Google Patents
Flue gas denitration oxidizing agent distribution apparatus Download PDFInfo
- Publication number
- CN201719974U CN201719974U CN2010202800282U CN201020280028U CN201719974U CN 201719974 U CN201719974 U CN 201719974U CN 2010202800282 U CN2010202800282 U CN 2010202800282U CN 201020280028 U CN201020280028 U CN 201020280028U CN 201719974 U CN201719974 U CN 201719974U
- Authority
- CN
- China
- Prior art keywords
- denitration
- pipe
- flue gas
- oxidizing agent
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a flue gas denitration oxidizing agent distribution apparatus in limestone/gypsum wet method flue gas desulfurization-denitration integrated equipment. Wherein a flue is penetrated by a cooling sleeve pipe, and the denitration oxidizing agent pipe is passed through the cooling sleeve pipe; two ends of the sleeve pipe are respectively connected with a coolant inlet pipe and a coolant outlet pipe; one end of the denitration oxidizing agent pipe is enclosed; a plurality of jet nozzle connection pipes are distributed within the length range of the denitration oxidizing agent pipe; every jet nozzle connection pipe is radially extended from the cooling sleeve pipe and provided with a jet nozzle; the denitration oxidizing agent is fully contacted with the smoke guided into the flue as mist liquid drops sprayed out by the jet nozzle to oxidate the NO in the smoke into harmless NO2, and is carried into the limestone/gypsum wet method smoke absorption tower by the smoke for the subsequent desulphurization and denitration process for reducing the NO2 into N2. The apparatus controls the temperature of the denitration oxidizing agent before spraying out by the coolant in the cooling sleeve pipe, prevents the decomposition reaction before contacting with the smoke, and increases the oxidizing agent effective utilization ratio.
Description
Technical field
The utility model relates to the denitrating flue gas oxidant distribution apparatus in a kind of limestone/gypsum wet process of FGD denitrification integrated device, belongs to the flue gas desulfurization and denitrification technical field.
Background technology
In China, the flue gas of thermal power station and big-and-middle-sized discharged from coal-fired boiler is the primary pollution source that causes sulfur dioxide in air and nitrogen oxide.At present, the technology that employing limestone/gypsum wet method is carried out flue gas desulfurization is quite ripe, but compared with developed countries, China is also backward relatively to the control technology of flue gas nitrogen oxide.In recent years, along with the accelerated development of China's economy, the enhancing of national environmental consciousness, the problem of control flue gas nitrogen oxide discharging more and more is subjected to the attention of relevant departments, believes and will carry out strict more NO soon
XDischarge standard.The desulfurization and denitrification integral device is the direction of fume environment protection field development in recent years, and it increases the denitration function on wet flue gas desulfurizer, realize the purpose of desulfurization and denitration simultaneously, thereby need not to build in addition independently denitrification apparatus, reduces the denitration cost.At present, adopt oxidant that the NO in the flue gas is oxidized to NO more
2, and then by reducing agent with NO
2Be reduced into harmless N
2Discharging realizes the purpose of denitration, but the further solution denitration oxidant of still needing easily decomposes in hot flue gas environment and makes oxidant reduce utilization rate reduction and the low problem of denitration efficiency.
Summary of the invention
The purpose of this utility model provides a kind of denitration oxidant distribution apparatus, solves labile problem of oxidant and the distribution density of raising in flue gas, improves denitration efficiency.
The utility model denitration oxidant distribution apparatus comprises the denitration oxidant pipe that feeds flue, also is provided with from flue and runs through the cooling collar that passes through, and the denitration oxidant pipe is passed from cooling collar; The two ends of sleeve pipe are connected to cooling liquid inlet pipe and coolant outlet respectively; The sealing of denitration oxidant pipe one end, and in length range, be distributed with a plurality of nozzles adapters, each nozzle adapter extends radially out from cooling collar, and nozzle is housed.
Each nozzle all is equipped with two nozzles, the in an acute angle and symmetrical installation of two nozzles in the same adapter on taking over.
Nozzle is taken over the outlet side towards flue.
The cooling collar two ends be provided with cover plate, two cover plates are connected with the flange of flue respectively.
The cover plate of cooling collar one end is connected in the outside of flue flange, and the cover plate of the other end is connected in the inboard of flue flange.
In this device, oxidant pipe is positioned at cooling collar, and the cooling fluid that flows through in the sleeve pipe is to the effect of denitration oxidant cooling, make the denitration oxidant ejection be controlled in the lower temperature range before flue gas contacts, prevent decomposition reaction, thereby improve the effective rate of utilization of oxidant.The denitration oxidant is atomized after the ejection of a plurality of nozzles, and the hot flue gas that passes through in vaporific oxidant and the flue fully contacts, and the NO in the flue gas is oxidized to NO
2, together feed in the follow-up absorbent body tower with flue gas subsequently, in the absorption tower, carry out in the flue gas desulfurization, by reducing agent with the NO in the flue gas
2Be reduced into harmless N
2Discharging realizes denitrating flue gas.In sum, the denitration oxidant utilization rate height of this device evenly distributes in flue gas, guarantees that the distribution density of oxidant reaches the requirement of process system, improves denitration efficiency.
Description of drawings
Fig. 1 is the structural representation of denitration oxidant distribution apparatus.
Fig. 2 represents to be equipped with the nozzle adapter enlarged drawing of two nozzles.
Among the figure, 1-flue input flue gas, 2-flue output flue gas, the 3-oxidant inlet, 4-oxidant outlet, 5, the 6-cooling fluid, the 7-flue, 8-oxidant pipe, 9-nozzle tube connector, the 10-nozzle, 11-cooling liquid inlet pipe, 12-coolant outlet, 13-sleeve pipe upper cover plate, 14-flue upper flange, 15-flue lower flange, 16-sleeve pipe lower cover, the 17-cooling collar.
The specific embodiment
Structure below in conjunction with description of drawings the utility model denitration oxidant distribution apparatus.
As shown in Figure 1, cooling collar 17 from flue 7 radially run through by, denitration oxidant pipe 8 is passed in sleeve pipe 17, the lower end closed of denitration oxidant pipe 8; The two ends of sleeve pipe 17 are connected to cooling liquid inlet pipe 11 and coolant outlet 6 respectively, and denitration oxidant pipe 8 is distributed with a plurality of nozzles and takes over 9, and each adapter is stretched out outside the sleeve pipe 17 and nozzle 10 is housed.Fig. 2 represents, each nozzle is taken over 9 axial angle≤90 ° that 10, two nozzles of two nozzles are housed, and symmetry is installed.
Cooling fluid feeds sleeve pipe 17 from inlet tube 11, and discharges from outlet 12.By denitration oxidant 3 input pipes 8 of pump pressurization, its temperature in pipe 8 is taken over 9 nozzle 10 ejections subsequently by the control of the cooling fluid in the sleeve pipe 17 from each.Former flue gas (from the boiler of power plant smoke evacuation) feeds flue 7 from smoke inlet 1, contacts with the denitration oxidant atomized drop of nozzle 10 ejections, makes the NO in the flue gas be oxidized to NO
2, the outlet 2 from flue 7 subsequently enters the desulphurization denitration absorption tower, absorption desulfurization and NO after continuing
2Be reduced into N
2Process.
Nozzle is taken over the outlet side towards flue, and promptly the emission direction of oxidant is consistent with the flow direction of flue gas.
Claims (6)
1. denitrating flue gas oxidant distribution apparatus comprises the denitration oxidant pipe that feeds flue, it is characterized in that being provided with from flue and runs through the cooling collar that passes through, and said denitration oxidant pipe is passed from cooling collar; The two ends of sleeve pipe are connected to cooling liquid inlet pipe and coolant outlet respectively; The sealing of denitration oxidant pipe one end, and in length range, be distributed with a plurality of nozzles adapters, each nozzle adapter extends radially out from cooling collar, and nozzle is housed.
2. denitrating flue gas oxidant distribution apparatus according to claim 1 is characterized in that in said each nozzle adapter two nozzles being housed all.
3. denitrating flue gas oxidant distribution apparatus according to claim 2 it is characterized in that said same nozzle takes over axial angle≤90 ° of two nozzles, and symmetry is installed.
4. denitrating flue gas oxidant distribution apparatus according to claim 3 is characterized in that said cooling collar two ends are provided with cover plate, and two cover plates are connected with the flange of flue respectively.
5. denitrating flue gas oxidant distribution apparatus according to claim 4 is characterized in that the cover plate of said cooling collar one end is connected in the outside of flue flange, and the cover plate of the other end is connected in the inboard of flue flange.
6. according to each described denitrating flue gas oxidant distribution apparatus in the claim 1～5, it is characterized in that the outlet side of nozzle adapter towards flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202800282U CN201719974U (en) | 2010-08-03 | 2010-08-03 | Flue gas denitration oxidizing agent distribution apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202800282U CN201719974U (en) | 2010-08-03 | 2010-08-03 | Flue gas denitration oxidizing agent distribution apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201719974U true CN201719974U (en) | 2011-01-26 |
Family
ID=43488248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202800282U Expired - Lifetime CN201719974U (en) | 2010-08-03 | 2010-08-03 | Flue gas denitration oxidizing agent distribution apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201719974U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875855A (en) * | 2017-11-14 | 2018-04-06 | 大连海事大学 | A kind of boat diesel engine exhaust emission integrated conduct method and device |
-
2010
- 2010-08-03 CN CN2010202800282U patent/CN201719974U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875855A (en) * | 2017-11-14 | 2018-04-06 | 大连海事大学 | A kind of boat diesel engine exhaust emission integrated conduct method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101637700B (en) | SCR denitrification process and denitrification device of ammonia injection grid adopting non-unidiameter injection orifices | |
| CN103506233B (en) | A kind of two-fluid injection apparatus of double atomization | |
| CN203764106U (en) | Flue gas denitrification device implemented by combining SNCR (selective non-catalytic reduction)-ozone oxidation with wet absorption | |
| CN203508242U (en) | Two-stage atomizing double-fluid spraying device | |
| CN102423616A (en) | Flue gas purification device for middle and small coal-fired boiler | |
| CN105148698A (en) | Boiler flue gas desulfurization and denitrification system | |
| CN204973521U (en) | SNCR+SCR unites denitrification facility | |
| CN202893175U (en) | Flue gas desulfurization and denitrification integrated device of sintering machine | |
| CN205386412U (en) | Boiler flue gas denitration system | |
| CN205133418U (en) | Catalysis of cement kiln steam and coal powder gasification system | |
| CN203916431U (en) | A kind of gaseous oxidation is in conjunction with the flue gas combined desulfurization and denitration device of wet absorption | |
| WO2015035709A1 (en) | Two-stage atomizing double fluid spraying device | |
| CN101920166B (en) | Denitration method for desulfurization postposition | |
| CN203469782U (en) | Double-tower type smoke desulfurization and denitrification system taking ammonia water as desorption agent | |
| CN103170232B (en) | A kind of integrating device of wet oxidation denitration | |
| CN201719974U (en) | Flue gas denitration oxidizing agent distribution apparatus | |
| CN202823136U (en) | Denitration device combining gas phase oxidation and wet method absorption | |
| CN210278778U (en) | Industrial purification system for removing sulfide gas | |
| CN103157357A (en) | Novel desulfurization-denitrification integrated device | |
| CN202962241U (en) | Device for synergistically removing flue gas mercury | |
| CN207680333U (en) | Urea direct-injection SNCR+SCR flue gas denitrification systems | |
| CN204816183U (en) | Use dry -type flue gas integration clean system of compressed air as carrier | |
| CN110180373B (en) | Industrial purification system for removing sulfide gas | |
| CN203610036U (en) | Scr denitration device | |
| CN105797554A (en) | Compound efficient energy-saving desulfurization, denitrification and dedusting integrated purifying column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |