CN203598607U - Flue-gas denitrifying and pre-dedusting device - Google Patents
Flue-gas denitrifying and pre-dedusting device Download PDFInfo
- Publication number
- CN203598607U CN203598607U CN201320660717.XU CN201320660717U CN203598607U CN 203598607 U CN203598607 U CN 203598607U CN 201320660717 U CN201320660717 U CN 201320660717U CN 203598607 U CN203598607 U CN 203598607U
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- Prior art keywords
- flue
- flow
- air
- flue gas
- dedusting device
- 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
- 239000003546 flue gas Substances 0.000 title claims abstract description 46
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 43
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 26
- 229910021529 ammonia Inorganic materials 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000004071 soot Substances 0.000 abstract 2
- 235000019504 cigarettes Nutrition 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to a flue-gas denitrifying and pre-dedusting device. The flue-gas denitrifying and pre-dedusting device is characterized by comprising a flue-gas pipeline connected with a flue-gas inlet and a denitrifying reactor connected with an output opening of the flue-gas pipeline, wherein the position of the flue-gas pipeline close to the flue-gas inlet is provided with a two-stage pre-deduster. The flue-gas denitrifying and pre-dedusting device has the advantages that after flue gas in the flue-gas pipeline passes through the first-stage pre-deduster and the second-stage pre-deduster, soot in the flue gas is greatly reduced and the variation of the denitrifying effect due to entering of a great amount of soot into the denitrifying reactor is avoided.
Description
technical field:
the utility model relates to a kind of denitrating flue gas pre-dedusting device.
background technology:
Flue gas refers to the various general names that contain contaminant gases that enter air that produce in the on-site fuel combustions such as enterprise and production process.Along with industrial expansion, the discharge capacity of flue gas is more and more, and these flue gases not only work the mischief to health, plant, also atmosphere have been caused to tremendous influence.
In order to purify these flue gases, adopt many cleaning equipments at present, be directly flue gas to be passed in Benitration reactor in the past, owing to containing a large amount of cigarette ash in those flue gases, easily makes Benitration reactor cause except nitre deleterious because entering a large amount of cigarette ash.
summary of the invention:
The purpose of this utility model is to provide a kind of denitrating flue gas pre-dedusting device, and this denitrating flue gas pre-dedusting device is not only simple in structure, reasonable in design, and is conducive to realize the pre-dedusting of flue gas.
The utility model denitrating flue gas pre-dedusting device, is characterized in that: comprise the flue being connected with gas approach and the Benitration reactor being connected with flue delivery outlet, described flue is provided with two-stage pre-duster near gas approach position.
Above-mentioned two-stage pre-duster comprises one-level pre-duster and secondary pre-duster, and described one-level pre-duster is the taper ash bucket that is arranged on vertical flue bottommost, and secondary pre-duster comprises the dihedral baffle plate peace shape baffle plate that is arranged on horizontal flue hole enlargement place.
Above-mentioned taper ash bucket bottommost is provided with gravity flap valve.
It is bucket-shaped that above-mentioned horizontal flue hole enlargement place bottom is also cone, is provided with gravity flap valve at cone bucket bottommost, and hole enlargement place of described horizontal flue is provided with three dihedral baffle plates and two flat shape baffle plates.
The intersection surrounding of above-mentioned vertical flue and horizontal flue is provided with baffle plate.
The junction of above-mentioned Benitration reactor and flue is provided with the main uniform device of air-flow, and the vertical grid sheet that the main uniform device of described air-flow is interlocked by transverse and longitudinal forms, and is provided with slope in the input port near the main uniform device of air-flow.
The main uniform device of said flow is divided into some regions, and each region intersection is provided with inverted v-shaped air-flow and leads hawk, and the intersection of main uniform device and Benitration reactor surrounding wall is provided with triangular ramp air-flow and leads hawk.
The corner that above-mentioned flue is positioned at pipeline is provided with the pre-uniform device of air-flow, and the pre-uniform device of described air-flow is that arc adds straight plate, and plate arranges vertical deflector along airflow direction.
Above-mentioned flue is provided with ammonia injection apparatus, and ammonia injection apparatus is some spray ammonia pipes, on every spray ammonia pipe, is laid with injection nozzle, and injection nozzle is that grating type is arranged.
In above-mentioned Benitration reactor, be provided with some layers of catalyst layer.
The operation principle of the utility model denitrating flue gas pre-dedusting device, in the time of work, flue gas is exported from economizer, access flue, flue gas in flue is by one-level pre-duster and secondary pre-duster, make flue gas from cigarette ash greatly reduce, avoided Benitration reactor to cause the variation except nitre effect because entering a large amount of cigarette ash.
accompanying drawing explanation:
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the B-B profile of Fig. 1;
Fig. 4 is the C-C profile of Fig. 1;
Fig. 5 is the top view of ammonia injection apparatus.
the specific embodiment:
The utility model denitrating flue gas pre-dedusting device, comprises the flue 2 being connected with gas approach 1 and the Benitration reactor 3 being connected with flue delivery outlet, and described flue is provided with two-stage pre-duster A1 near gas approach position.
For reasonable in design, above-mentioned two-stage pre-duster A1 comprises one-level pre-duster A101 and secondary pre-duster A102, described one-level pre-duster is the taper ash bucket A103 that is arranged on vertical flue bottommost, secondary pre-duster A102 comprises the dihedral baffle plate A104 peace shape baffle plate A105 that is arranged on horizontal flue hole enlargement place, and dihedral baffle plate A104 peace shape baffle plate A105 is all perpendicular being located in horizontal flue.
For the ease of cleaning cigarette ash, above-mentioned taper ash bucket bottommost is provided with gravity flap valve A2.
In order to be further convenient to clear up cigarette ash, it is bucket-shaped that above-mentioned horizontal flue hole enlargement place bottom is also cone, is provided with gravity flap valve A2 at cone bucket bottommost, and hole enlargement place of described horizontal flue is provided with three dihedral baffle plates and two flat shape baffle plates.
In order to keep off ash, the intersection surrounding of above-mentioned vertical flue and horizontal flue is provided with baffle plate A3, and this baffle plate A3 can make a part of cigarette ash be stopped.
The above-mentioned Benitration reactor 3 of stating is provided with the main uniform device 4 of air-flow with the junction of flue 2, the vertical grid sheet 401 that the main uniform device 4 of described air-flow is interlocked by even transverse and longitudinal forms, be provided with slope 402 in the input port near the main uniform device of air-flow, duct between the vertical grid sheet that flue gas interlocks from even transverse and longitudinal is flow through, thereby air-flow is input in Benitration reactor more equably.
In order to make airflow uniform distribution effect better, the main uniform device of said flow is divided into some regions, can be four square locals.In order not deposit cigarette ash on the main uniform device of this air-flow, each region intersection is provided with inverted v-shaped air-flow and leads hawk 403, the intersection of main uniform device and Benitration reactor surrounding wall is provided with triangular ramp air-flow and leads hawk 404, after flue gas enters by inverted v-shaped air-flow lead ash 403 and triangular ramp air-flow lead hawk 404, cigarette ash is not deposited from the teeth outwards.
For further uniform flue gas, the corner that above-mentioned flue is positioned at pipeline is provided with the pre-uniform device 5 of air-flow.The pre-uniform device of said flow is that arc adds straight plate, and plate arranges vertical deflector 501 along airflow direction.The pre-uniform device 5 of this air-flow is not only conducive to pre-uniform air-flow, is also conducive to the guiding of air-flow.
For reasonable in design, above-mentioned flue is provided with ammonia injection apparatus 6, and ammonia injection apparatus is some spray ammonia pipes 601, on every spray ammonia pipe, is laid with injection nozzle 602, and injection nozzle is that grating type is arranged.
For good purification, in above-mentioned Benitration reactor, be provided with some layers of catalyst layer 7.
The operation principle of the utility model denitrating flue gas pre-dedusting device, in the time of work, flue gas is exported from economizer, access flue, flue gas in flue is by one-level pre-duster and secondary pre-duster, make flue gas from cigarette ash greatly reduce, avoided Benitration reactor to cause the variation except nitre effect because entering a large amount of cigarette ash; The wherein operation principle of the pre-uniform device of air-flow, after the flue gas in flue is uniform by the main uniform device of air-flow, is input in Benitration reactor more equably air-flow, thereby is conducive to alleviate the operating pressure of Benitration reactor part, makes gas cleaning effect better.
The foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (9)
1. a denitrating flue gas pre-dedusting device, is characterized in that: comprise the flue being connected with gas approach and the Benitration reactor being connected with flue delivery outlet, described flue is provided with two-stage pre-duster near gas approach position; Described two-stage pre-duster comprises one-level pre-duster and secondary pre-duster, and described one-level pre-duster is the taper ash bucket that is arranged on vertical flue bottommost, and secondary pre-duster comprises the dihedral baffle plate peace shape baffle plate that is arranged on horizontal flue hole enlargement place.
2. denitrating flue gas pre-dedusting device according to claim 1, is characterized in that: described taper ash bucket bottommost is provided with gravity flap valve.
3. denitrating flue gas pre-dedusting device according to claim 1, it is characterized in that: it is bucket-shaped that described horizontal flue hole enlargement place bottom is also cone, be provided with gravity flap valve at cone bucket bottommost, hole enlargement place of described horizontal flue is provided with three dihedral baffle plates and two flat shape baffle plates.
4. denitrating flue gas pre-dedusting device according to claim 1, is characterized in that: the intersection surrounding of described vertical flue and horizontal flue is provided with baffle plate.
5. denitrating flue gas pre-dedusting device according to claim 1, it is characterized in that: the junction of described Benitration reactor and flue is provided with the main uniform device of air-flow, the vertical grid sheet that the main uniform device of described air-flow is interlocked by transverse and longitudinal forms, and is provided with slope in the input port near the main uniform device of air-flow.
6. denitrating flue gas pre-dedusting device according to claim 5, it is characterized in that: the main uniform device of described air-flow is divided into some regions, each region intersection is provided with inverted v-shaped air-flow and leads hawk, and the intersection of main uniform device and Benitration reactor surrounding wall is provided with triangular ramp air-flow and leads hawk.
7. denitrating flue gas pre-dedusting device according to claim 5, is characterized in that: the corner that described flue is positioned at pipeline is provided with the pre-uniform device of air-flow, and the pre-uniform device of described air-flow is that arc adds straight plate, and plate arranges vertical deflector along airflow direction.
8. denitrating flue gas pre-dedusting device according to claim 5, is characterized in that: described flue is provided with ammonia injection apparatus, and ammonia injection apparatus is some spray ammonia pipes, on every spray ammonia pipe, is laid with injection nozzle, and injection nozzle is that grating type is arranged.
9. denitrating flue gas pre-dedusting device according to claim 5, is characterized in that: in described Benitration reactor, be provided with some layers of catalyst layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660717.XU CN203598607U (en) | 2013-10-25 | 2013-10-25 | Flue-gas denitrifying and pre-dedusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660717.XU CN203598607U (en) | 2013-10-25 | 2013-10-25 | Flue-gas denitrifying and pre-dedusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203598607U true CN203598607U (en) | 2014-05-21 |
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ID=50711308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320660717.XU Expired - Lifetime CN203598607U (en) | 2013-10-25 | 2013-10-25 | Flue-gas denitrifying and pre-dedusting device |
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| CN (1) | CN203598607U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621649A (en) * | 2016-11-01 | 2017-05-10 | 东南大学 | Device and method for pre-removing popcorn ash of SCR denitration system |
| CN110043916A (en) * | 2019-04-22 | 2019-07-23 | 广东电网有限责任公司 | A kind of boiler flue and a kind of denitrating system |
| CN110302595A (en) * | 2019-08-05 | 2019-10-08 | 中国华能集团清洁能源技术研究院有限公司 | A kind of flue demister flowing flue gas |
| CN115095854A (en) * | 2022-06-20 | 2022-09-23 | 浙江兴核智拓科技有限公司 | Low low temperature economizer mounting structure of air preheater rear end wall temperature developments adjustable |
-
2013
- 2013-10-25 CN CN201320660717.XU patent/CN203598607U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106621649A (en) * | 2016-11-01 | 2017-05-10 | 东南大学 | Device and method for pre-removing popcorn ash of SCR denitration system |
| CN106621649B (en) * | 2016-11-01 | 2019-01-29 | 东南大学 | A kind of SCR denitration system removes the device and method of puffed rice ash in advance |
| CN110043916A (en) * | 2019-04-22 | 2019-07-23 | 广东电网有限责任公司 | A kind of boiler flue and a kind of denitrating system |
| CN110302595A (en) * | 2019-08-05 | 2019-10-08 | 中国华能集团清洁能源技术研究院有限公司 | A kind of flue demister flowing flue gas |
| CN115095854A (en) * | 2022-06-20 | 2022-09-23 | 浙江兴核智拓科技有限公司 | Low low temperature economizer mounting structure of air preheater rear end wall temperature developments adjustable |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |