CN204042958U - A kind of flue gas conveying device - Google Patents
A kind of flue gas conveying device Download PDFInfo
- Publication number
- CN204042958U CN204042958U CN201420380745.0U CN201420380745U CN204042958U CN 204042958 U CN204042958 U CN 204042958U CN 201420380745 U CN201420380745 U CN 201420380745U CN 204042958 U CN204042958 U CN 204042958U
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- China
- Prior art keywords
- oxygen
- flue
- rich gas
- injector
- convergent portion
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- 239000003546 flue gas Substances 0.000 title claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 150
- 239000001301 oxygen Substances 0.000 claims abstract description 150
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 150
- 239000007789 gas Substances 0.000 claims abstract description 56
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model discloses a kind of flue gas conveying device, this device comprises flue (1) and is arranged at the oxygen injector (2) of this flue sidepiece symmetrically, described oxygen injector comprises vertical tube part (21) and convergent portion (22), the one end in described convergent portion is connected with described flue, the other end is connected with described vertical tube part, by this device, oxygen rich gas is injected in flue by symmetrically arranged oxygen injector, oxygen rich gas is penetrated from the convergent portion of an oxygen injector, the oxygen rich gas penetrated with the convergent portion of another oxygen injector liquidates at flue center, thus enhance the mixing intensity of oxygen enrichment oxygen and flue gas, and in the short period of time by oxygen rich gas and flue gas quick, safety, stable mixes.
Description
Technical field
The utility model relates to a kind of flue gas conveying device.
Background technology
In order to respond actively the challenge that global warming brings to human survival, oxygen-enriched combusting becomes as a kind of main carbon trapping technique in thermal power plant the focus studied both at home and abroad day by day.Oxygen-enriched combustion technology; by oxygenerating technology, the nitrogen accounting for vast scale in air is removed; thus obtain the oxygen of high concentration; send into boiler after being mixed by the oxygen deprivation flue gas that the oxygen of high concentration and boiler produce to participate in burning; after the flue gas drying dehydration obtained like this; the concentration of carbon dioxide can reach more than 95%, comparatively easily realize large-scale carbon dioxide enriched and reduce discharging.It is an important research technology of oxygen-enriched combustion system by the oxygen deprivation flue gas safety flowed in oxygen rich gas and flue, Homogeneous phase mixing.
CN202485026U discloses a kind of Oxygen injector being applied to oxygen-enriched combusting carbon trapping technique, utilizes Oxygen injector to be entered by oxygen DC tube by pure oxygen, is then derived by oxygen guide pipe, and outlet and the smoke wind pipe of oxygen guide pipe are concentric.General oxygen jet velocities is very large, the 2-5 being flue gas flow rate doubly, due to the outlet of oxygen guide pipe and smoke wind pipe concentric, oxygen guide pipe tube wall will be collided when injecting oxygen, oxygen guide pipe can be made to break, thus reduce the service life of Oxygen injector.Therefore, need a kind of mixing intensity that can either strengthen oxygen rich gas and flue gas of development badly, oxygen rich gas and flue gas can be realized within a short period of time again safe, stablize, device in the uniform injection flue of rapid mixing.
Utility model content
The purpose of this utility model is to overcome in oxygen-enriched combustion system, the excessive system that causes of the dynamic pressure of oxygen injecting port is dangerous, unstable, and oxygen rich gas mixes uneven defect with flue gas in flue, and provide the device in a kind of injection flue of both stable safety when oxygen rich gas can be mixed fast with flue gas in flue and mixes.
To achieve these goals, the utility model provides a kind of flue gas conveying device, this device comprises flue and is arranged at the oxygen injector of this flue sidepiece symmetrically, described oxygen injector comprises vertical tube part and convergent portion, the one end in described convergent portion is connected with described flue, and the other end is connected with described vertical tube part.
Preferably, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue supplied flue gases and described oxygen injector is more than or equal to 90 °.
More preferably, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue supplied flue gases and described oxygen injector is 90-135 °.
Preferably, the diameter at two ends, described convergent portion is than being 3:1 to 1:1.
More preferably, the diameter at two ends, described convergent portion is than being 2:1 to 1.2:1.
Preferably, described oxygen injector is multiple.
Preferably, described convergent portion is direct current pipe or eddy flow pipe.
According to the flue gas conveying device that the utility model provides, because the oxygen injector in this device is arranged on flue sidepiece symmetrically, so adopt this device by oxygen rich gas injection flue, oxygen rich gas is penetrated from the convergent portion of an oxygen injector, the oxygen rich gas penetrated with the convergent portion of another oxygen injector liquidates at flue center, thus enhance the mixing intensity of oxygen enrichment oxygen and flue gas, and oxygen rich gas is quick with flue gas, safe, stablely in the short period of time to mix.
Other feature and advantage of the present utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for description, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of a kind of embodiment of the flue gas conveying device that the utility model provides;
Fig. 2 is the structural representation of the another kind of embodiment of the flue gas conveying device that the utility model provides.
Description of reference numerals
1 flue 2 oxygen injector 21 vertical tube part 22 convergent portion
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
As illustrated in fig. 1 and 2, the flue gas conveying device that the utility model provides comprises flue 1 and is arranged at the oxygen injector 2 of this flue sidepiece symmetrically, described oxygen injector 2 comprises vertical tube part 21 and convergent portion 22, the one end in described convergent portion 22 is connected with described flue 1, and the other end is connected with described vertical tube part 21.
According to the utility model, described flue 1 does not have concrete restriction, can be the flue 1 of various shape, such as, can be cylindrical shape, rectangle etc.
In the utility model, described convergent portion 22 refers to that one end open is comparatively large and the parts that other end opening is less.In described flue gas conveying device, one end that opening is larger is connected with the vertical tube part 21 of described oxygen injector 2, and one end that opening is less is connected with flue 1.
According to the utility model, be to make the oxygen rich gas through oxygen injector liquidate at flue center, can better oxygen rich gas being mixed with flue gas by symmetrically arranged for oxygen injector 2 object.Angle between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 can be more than or equal to 90 °.Preferably, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 is more than or equal to 90 °; When described angle is 90 ° substantially, the flow direction that oxygen injector 2 injects oxygen rich gas is basically perpendicular to the flow direction of flue gas.Particularly, as shown in Figure 1, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 is essentially 90 °.As shown in Figure 2, angle between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 is more than or equal to 90 °, now, the flow direction that the flow direction of flue gas and oxygen injector 2 inject oxygen rich gas is rightabout, so not only can realize liquidating of the oxygen enriched gas stream ejected from symmetrical oxygen injector 2, and oxygen rich gas fails to be convened for lack of a quorum and liquidate between flue gas stream, thus be more conducive to oxygen rich gas and mix with flue gas.In the preferred case, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 is 90-135 °.
According to the utility model, the diameter at two ends, described convergent portion 22 than being 3:1 to 1:1, in order to make that oxygen rich gas mix with flue gas evenly, more stable, safer, the diameter at two ends, convergent portion 22 is compared and is preferably 2:1 to 1.2:1.
There is no particular limitation to the diameter ratio of the diameter of described flue 1 and vertical tube part 21 for the utility model, if can make that oxygen rich gas mixes with flue gas evenly, more stable, safer.
According to the utility model, the number of described oxygen injector 2 is multiple, in order to make oxygen injector be arranged on flue 1 sidepiece symmetrically, the number of oxygen injector 2 is preferably even number, such as, can be 2,4,6 etc.
According to the utility model, the described oxygen injector 2 referring to described in any 2 symmetrically arranged symmetrically in multiple oxygen injector 2 is substantially all aspectantly be arranged on flue sidepiece, oxygen rich gas is made to export injection from the convergent portion 22 of one of them oxygen injector 2, export with the convergent portion 22 of another symmetrical oxygen injector 2 oxygen rich gas penetrated to liquidate at flue center, and because convergent portion 22 has this unique design diminished gradually, accelerate the mixing velocity of oxygen rich gas and flue gas in flue especially.
According to the utility model, in order to make oxygen rich gas mix fast with flue gas, described convergent portion 22 can be direct current pipe, can also be eddy flow pipe.
According to the utility model, by oxygen rich gas by described flue gas conveying device injection flue, particularly, oxygen rich gas is injected in flue 1 by oxygen injector 2.
According to the utility model, as long as the content of oxygen is higher than the content of oxygen in natural air in described oxygen rich gas, wherein, in natural air, the content of oxygen is 21%.
Under preferable case, described oxygen rich gas contains the oxygen of more than 95%.
According to the utility model, in described flue 1, the flow velocity of flue gas is 10-15m/s.
According to the utility model, in order to make oxygen rich gas mix fast with flue gas, the flow velocity of the oxygen rich gas injected by described oxygen injector 2 is 1-40m/s, is preferably 5-35m/s.
Below will be described in detail the utility model by embodiment, in following examples the dynamic pressure of oxygen injecting port according to the following equation (1) calculate,
Wherein, ρ is the density of oxygen rich gas is 1.5kg/Nm
3, v is the flow velocity of oxygen rich gas.
Embodiment 1
As shown in Figure 1, flue gas conveying device is at columnar flue 1 sidepiece, 2 oxygen injectors 2 are set symmetrically, described oxygen injector 2 comprises vertical tube part 21 and convergent portion 22, one end and the described flue 1 in described convergent portion 22 pass through Flange joint, the other end and described vertical tube part 21 are by being welded to connect, and the angle α between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 equals 90 °, wherein, described convergent portion 22 is direct current pipe, and the diameter at two ends, convergent portion 22 is than being 2:1.
By oxygen content be 97% oxygen rich gas pass through said apparatus, with in the flow velocity injection flue of 35m/s, and be that the flue gas rapid mixing of 15m/s is even with flow velocity, then send in boiler and participate in burning, show that the dynamic pressure of oxygen injecting port is 918.75Pa by formula (1).
Embodiment 2
As shown in Figure 2, flue gas conveying device is at columnar flue 1 sidepiece, 2 oxygen injectors 2 are set symmetrically, described oxygen injector 2 comprises vertical tube part 21 and convergent portion 22, one end and the described flue 1 in described convergent portion 22 pass through Flange joint, the other end and described vertical tube part 21 are by being welded to connect, and the angle α between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 equals 120 °, wherein, described convergent portion 22 is eddy flow pipe, and the diameter at two ends, convergent portion 22 is than being 1.5:1.
By oxygen content be 96% oxygen rich gas pass through said apparatus, with in the flow velocity injection flue of 25m/s, and be that the flue gas rapid mixing of 13m/s is even with flow velocity, then send in boiler and participate in burning, show that the dynamic pressure of oxygen injecting port is 468.75Pa by formula (1).
Embodiment 3
Flue gas conveying device is at rectangular flue 1 sidepiece, 4 oxygen injectors 2 are set symmetrically, described oxygen injector 2 comprises vertical tube part 21 and convergent portion 22, one end and the described flue 1 in described convergent portion 22 pass through Flange joint, the other end and described vertical tube part 21 are by being welded to connect, and the angle α between the flow direction being injected oxygen rich gas by the flow direction of described flue 1 supplied flue gases and described oxygen injector 2 equals 135 °, wherein, described convergent portion 22 is direct current pipe, and the diameter at two ends, convergent portion 22 is than being 1.2:1.
By oxygen content be 95% oxygen rich gas pass through said apparatus, with in the flow velocity injection flue of 5m/s, and be that the flue gas rapid mixing of 10m/s is even with flow velocity, then send in boiler and participate in burning, show that the dynamic pressure of oxygen injecting port is 18.75Pa by formula (1).
Comparative example 1
Flue gas conveying device and the device described in embodiment 1 similar, unlike flue sidepiece, 1 oxygen injector is set.
According to the method for embodiment 1 by oxygen rich gas injection flue, double unlike by the flow velocity of oxygen rich gas, show that the dynamic pressure of oxygen injecting port is 3675Pa by formula (1).
Can be known by comparing embodiment and comparative example, oxygen injector 2 is arranged on flue 1 sidepiece symmetrically, greatly can reduce the dynamic pressure of oxygen injecting port, improves the security of system.
In addition, can be found out by embodiment 1 and comparative example 1, in embodiment 1, flue 1 sidepiece arranges 2 oxygen injectors 2 symmetrically, oxygen enriched gas stream and flue gas fail to be convened for lack of a quorum to occur to clash at flue center and mix, make that oxygen rich gas mixes with flue gas within the relatively short time evenly, reduce the collision to wall; And the dynamic pressure of oxygen injecting port reduces 2756.25Pa, improve the security of system; But flue 1 sidepiece in comparative example 1 only arranges an oxygen injector 2, mix with flue gas fast to make oxygen rich gas, the flow velocity of oxygen rich gas is doubled, thus increase the dynamic pressure of oxygen injecting port, reduce the security of system, and also can collide flue tube wall during oxygen rich gas injection flue.
More than describe preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (7)
1. a flue gas conveying device, it is characterized in that, this device comprises flue (1) and is arranged at the oxygen injector (2) of this flue sidepiece symmetrically, described oxygen injector (2) comprises vertical tube part (21) and convergent portion (22), one end of described convergent portion (22) is connected with described flue (1), and the other end is connected with described vertical tube part (21).
2. device according to claim 1, is characterized in that, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue (1) supplied flue gases and described oxygen injector (2) is more than or equal to 90 °.
3. device according to claim 2, is characterized in that, the angle between the flow direction being injected oxygen rich gas by the flow direction of described flue (1) supplied flue gases and described oxygen injector (2) is 90-135 °.
4. device according to claim 1, is characterized in that, the diameter at described convergent portion (22) two ends is than being 3:1 to 1:1.
5. device according to claim 4, is characterized in that, the diameter at described convergent portion (22) two ends is than being 2:1 to 1.2:1.
6. device according to claim 1 and 2, is characterized in that, described oxygen injector (2) is for multiple.
7. the device according to claim 1 or 4, is characterized in that, described convergent portion (22) is direct current pipe or eddy flow pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380745.0U CN204042958U (en) | 2014-07-10 | 2014-07-10 | A kind of flue gas conveying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420380745.0U CN204042958U (en) | 2014-07-10 | 2014-07-10 | A kind of flue gas conveying device |
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| CN204042958U true CN204042958U (en) | 2014-12-24 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110694A (en) * | 2014-07-10 | 2014-10-22 | 中国神华能源股份有限公司 | Smoke conveying device and method for injecting oxygen-enriched gas into flue |
| CN108167847A (en) * | 2017-12-25 | 2018-06-15 | 孟婷婷 | A kind of plastic extruder filter screen combustion tail gas processing unit with UTILIZATION OF VESIDUAL HEAT IN |
| CN108167848A (en) * | 2017-12-25 | 2018-06-15 | 孟婷婷 | Plastic extrusion strainer combustion tail gas processing unit and method |
| CN108167846A (en) * | 2017-12-25 | 2018-06-15 | 孟婷婷 | A kind of plastic extruder filter screen combustion tail gas processing unit that can remove dust |
| CN108336441A (en) * | 2018-01-25 | 2018-07-27 | 界首市天隆塑业科技有限公司 | Waste battery shell environment-friendly high-efficiency regenerates preparation system |
| CN108357015A (en) * | 2018-01-25 | 2018-08-03 | 界首市鑫宇塑业有限公司 | Waste and old power battery case environment-friendly high-efficiency regenerates preparation system |
| CN108504871A (en) * | 2018-03-20 | 2018-09-07 | 孟婷婷 | Precious metal recovery device and method in circuit board incineration tail gas |
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2014
- 2014-07-10 CN CN201420380745.0U patent/CN204042958U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110694A (en) * | 2014-07-10 | 2014-10-22 | 中国神华能源股份有限公司 | Smoke conveying device and method for injecting oxygen-enriched gas into flue |
| CN108167847A (en) * | 2017-12-25 | 2018-06-15 | 孟婷婷 | A kind of plastic extruder filter screen combustion tail gas processing unit with UTILIZATION OF VESIDUAL HEAT IN |
| CN108167848A (en) * | 2017-12-25 | 2018-06-15 | 孟婷婷 | Plastic extrusion strainer combustion tail gas processing unit and method |
| CN108167846A (en) * | 2017-12-25 | 2018-06-15 | 孟婷婷 | A kind of plastic extruder filter screen combustion tail gas processing unit that can remove dust |
| CN108167847B (en) * | 2017-12-25 | 2019-05-10 | 东莞市宏昱新材料有限公司 | A kind of plastic extruder filter screen combustion tail gas processing unit with UTILIZATION OF VESIDUAL HEAT IN |
| CN108336441A (en) * | 2018-01-25 | 2018-07-27 | 界首市天隆塑业科技有限公司 | Waste battery shell environment-friendly high-efficiency regenerates preparation system |
| CN108357015A (en) * | 2018-01-25 | 2018-08-03 | 界首市鑫宇塑业有限公司 | Waste and old power battery case environment-friendly high-efficiency regenerates preparation system |
| CN108504871A (en) * | 2018-03-20 | 2018-09-07 | 孟婷婷 | Precious metal recovery device and method in circuit board incineration tail gas |
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