CN203816510U - Denitration reactor special for coke oven waste gas - Google Patents
Denitration reactor special for coke oven waste gas Download PDFInfo
- Publication number
- CN203816510U CN203816510U CN201420259848.1U CN201420259848U CN203816510U CN 203816510 U CN203816510 U CN 203816510U CN 201420259848 U CN201420259848 U CN 201420259848U CN 203816510 U CN203816510 U CN 203816510U
- Authority
- CN
- China
- Prior art keywords
- reactor
- catalyst
- coke oven
- special
- denitration
- 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
- 239000000571 coke Substances 0.000 title claims abstract description 21
- 239000002912 waste gas Substances 0.000 title abstract description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 40
- 230000009615 deamination Effects 0.000 claims abstract description 11
- 238000006481 deamination reaction Methods 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 36
- 239000000428 dust Substances 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 7
- 210000000056 organ Anatomy 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 210000005056 cell body Anatomy 0.000 claims description 3
- 230000008646 thermal stress Effects 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 239000010410 layer Substances 0.000 description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000004939 coking Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000549556 Nanos Species 0.000 description 1
- 241000220317 Rosa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Chimneys And Flues (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a denitration reactor special for coke oven waste gas. A denitration reactor adopting a tower-type structure is arranged; a flue gas inlet is arranged at the lower part of the reactor, and a flue gas outlet is arranged at the upper part of the reactor; a denitration and dedusting catalyst and a deamination catalyst are sequentially arranged above the flue gas inlet in the reactor; the denitration and dedusting catalyst adopts a filter bag structure, and is formed by a plurality of parallel units; the outer sides at the upper parts of the two units at the two ends of the parallel structure are fixedly and hermetically connected with the upper frames of the catalysts; the upper parts of the adjacent two units are hermetically connected; an inlet passage is formed between the lower parts of the adjacent two units; each unit adopts the filter bag structure with a sealed lower opening and an opened upper part; each unit body includes an inner layer and an outer layer, the inner layer is a denitration catalyst layer, and the outer layer is a ceramic nanometer dedusting layer. The denitration reactor provided by the utility model is simple to operate, small in floor space, high in efficiency and low in cost.
Description
Technical field:
The utility model relates to the special Benitration reactor of a kind of coke oven exhaust gas, belongs to coke oven Air Pollution Control field.
Background technology:
Coke is a main by-product of coal conversion, is mainly used in blast furnace ironmaking, plays reducing agent, exothermic mixture and stock column skeleton function, is the important raw material of steel and iron industry.
Coke is that coal heats in carbonization chamber in coke furnace under the condition of isolated air, forms through the complex process of series of physical variation and chemical reaction.The coke-stove gas producing in coke retort process contains the pollutant such as sulfur dioxide and nitrogen oxide, in follow-up use procedure, can produce new pollution.These sulfur dioxide and nitrogen oxide are the important composition compositions of PM2.5 particle, are also the main causes that forms acid rain, haze etc.Its mechanism of production is: the thermal source of carbonizing chamber is provided by a certain proportion of coke-stove gas and BF gas heating flue, and the waste gas that heating gas is produced is called coking furnace discharge gas; And in coal gas, contain a certain amount of H
2s sulfides, generates SO after burning
2, coal gas and air, in the time that coke oven vertical flame path burns, generate nitrogen oxide NOx (having three kinds of temperature heating power type, hydrocarbon fuel Quick-type and nitrogen component fuel types).At present, the sulfur dioxide of China's coking furnace discharge gas and nitrogen oxide are not taked reduction of discharging measure, detect the SO that domestic existing coke oven discharges according to environmental administration
2mostly can not meet " the coking chemistry emission of industrial pollutants standard " of national up-to-date appearance with the concentration of NOx.And new " standard " rose on January 1st, 2015, to SO
2require higher with the concentration of emission of NOx.Therefore, the transformation of coke oven denitration dust collecting is urgent task of control atmosphere pollution, to the research of coking furnace discharge gas denitration technology, has extremely profound significance.
Summary of the invention:
For overcoming the defect of prior art, the purpose of this utility model is to provide a kind of coke oven exhaust gas special Benitration reactor, and the utility model Benitration reactor is simple to operate, and floor space is little, and efficiency is high, with low cost.
The utility model technical solution problem adopts following technical scheme:
The special Benitration reactor of coke oven exhaust gas, arranges tower structure Benitration reactor, is provided with gas approach, top is provided with exhanst gas outlet at described reactor lower part, and the top that is positioned at described gas approach in reactor is provided with denitration dust collecting catalyst and deamination catalyst successively.
Described denitration dust collecting catalyst is made as filter bag type structure, formed side by side by multiple unit, two unit upper outside in two ends and the fixed seal connection of catalyst upper ledge, adjacent two unit are tightly connected between top, and adjacent two unit form inlet channel between bottom; Each described unit is the filter bag type structure that end opening closed upper portion is uncovered, and each cell body comprises inside and outside two-layer, and internal layer is denitrating catalyst layer, outer for ceramic nano is except knoisphere.
Described deamination catalyst is made as filter board type structure, its four limit and the fixed seal connection of Benitration reactor card.
Sidepiece or side top that described inside reactor is positioned at described denitration dust collecting catalyst are provided with spraying and blowing organ, and described spraying and blowing organ is provided with multiple nozzles by external air source air feed.
Described reactor outside is provided with support, and reactor body adopts bridging type to be connected with described support, by reactor Bearing Seat Force on support; Prevent reactor because the variation of flue-gas temperature causes thermal stress issues.
Sidepiece or the top of described reactor are provided with access door.
The below that is positioned at described gas approach in reactor is provided with ash discharge storehouse.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
In the utility model reactor, the denitration dust collecting catalyst of filter bag type structure is set above gas approach, its outer field ceramic nano removes knoisphere and has the function that removes dust, and the denitrating catalyst of internal layer has the function of NO_x removal.
Deamination catalyst layer is set above denitration dust collecting catalyst, ensures that the escaping of ammonia rate is lower than national standard.
Denitration dust collecting catalyst top is provided with the access door for maintenance and replacing denitration dust collecting catalyst.The utility model Benitration reactor is simple to operate, and floor space is little, and efficiency is high, with low cost.
Brief description of the drawings:
Fig. 1 is structural representation of the present utility model; Fig. 2 A-2C is respectively the utility model top view, front view and side view; Fig. 3 is the schematic cross section of a unit in filter bag type denitration dust collecting catalyst.
Number in the figure: 1 support, 2 ash discharge storehouses, 3 gas approach, 4 denitration dust collecting catalyst, 41 denitrating catalyst layers, 42 ceramic nanos are except knoisphere, 5 spraying and blowing organs, 6 access doors, 7 deamination catalyst, 8 exhanst gas outlets.
Below pass through detailed description of the invention, and the utility model is described in further detail by reference to the accompanying drawings.
Detailed description of the invention:
Embodiment: in conjunction with Fig. 1-3, tower structure Benitration reactor is set, is provided with gas approach 3, top is provided with exhanst gas outlet 8 at reactor lower part, the top that is positioned at gas approach in reactor is provided with denitration dust collecting catalyst 4 and deamination catalyst 7 from bottom to top successively.
In specifically arranging, denitration dust collecting catalyst 4 is made as filter bag type structure, formed side by side by multiple unit, two unit upper outside in filter bag type structure two ends and the fixed seal connection of catalyst upper ledge, between top, adjacent two unit, be tightly connected and prevent flue gas escape, adjacent two unit form inlet channel between bottom; Each unit is the elliptical filter bag formula structure that end opening closed upper portion is uncovered, each cell body comprises inside and outside two-layer, internal layer is denitrating catalyst layer 41, it is outer for ceramic nano is except knoisphere 42, flue gas is entered by the sidewall of the each unit of filter bag type, after ceramic nano is except knoisphere 42, denitrating catalyst layer 41 double-filtration, then the hollow cavity that enters filter bag type unit is discharged by opened upper end.
Deamination catalyst 7 is made as filter board type structure, filter plate four limits and the fixed seal connection of Benitration reactor card, and filter plate is provided with hole and in filter plate interlayer, fills deamination catalyst.
Sidepiece or side top that inside reactor is positioned at denitration dust collecting catalyst 4 are provided with spraying and blowing organ 5, spraying and blowing organ is provided with multiple nozzles by external air source air feed, blows off and falls in the ash discharge storehouse 2 of below of gas import except the dust on knoisphere 42 being attached to ceramic nano.
Reactor outside is provided with support 1, and reactor body adopts bridging type to be connected with support 1, by reactor Bearing Seat Force on support; Prevent reactor because the variation of flue-gas temperature causes thermal stress issues.
In specific works, comprise the steps: that the empty gaseous mixture of coke-oven chimney waste gas and ammonia enters inside reactor from gas approach 3, when flue gas passes through the ectonexine wall of denitration dust collecting catalyst 4, NOx is reacted, dust is adsorbed, the ammonia of escaping is removed by deamination catalyst 7, and clean gas is discharged from reactor exhanst gas outlet 8 subsequently.
This reactor can be made many group stand alone types, or monoblock type.
The access door of this reactor can be placed on side and also can be placed on top.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all amendments of making in spirit of the present utility model and principle, are equal to replacement and improvement etc., all should be within protection domain of the present utility model.
Claims (7)
1. the special Benitration reactor of coke oven exhaust gas, it is characterized in that, tower structure Benitration reactor is set, be provided with gas approach (3) at described reactor lower part, top is provided with exhanst gas outlet (8), the top that is positioned at described gas approach in reactor is provided with denitration dust collecting catalyst (4) and deamination catalyst (7) successively.
2. the special Benitration reactor of coke oven exhaust gas according to claim 1, it is characterized in that, described denitration dust collecting catalyst (4) is made as filter bag type structure, formed side by side by multiple unit, two unit upper outside in two ends and the fixed seal connection of catalyst upper ledge, adjacent two unit are tightly connected between top, and adjacent two unit form inlet channel between bottom; Each described unit is the filter bag type structure that end opening closed upper portion is uncovered, and each cell body comprises inside and outside two-layer, and internal layer is denitrating catalyst layer (41), outer for ceramic nano is except knoisphere (42).
3. the special Benitration reactor of coke oven exhaust gas according to claim 1, is characterized in that, described deamination catalyst (7) is made as filter board type structure, its four limit and the fixed seal connection of Benitration reactor card.
4. the special Benitration reactor of coke oven exhaust gas according to claim 1, it is characterized in that, sidepiece or side top that described inside reactor is positioned at described denitration dust collecting catalyst (4) are provided with spraying and blowing organ (5), and described spraying and blowing organ is provided with multiple nozzles by external air source air feed.
5. the special Benitration reactor of coke oven exhaust gas according to claim 1, it is characterized in that, described reactor outside is provided with support (1), and reactor body and described support (1) adopt bridging type to be connected, by reactor Bearing Seat Force on support; Prevent reactor because the variation of flue-gas temperature causes thermal stress issues.
6. the special Benitration reactor of coke oven exhaust gas according to claim 1, is characterized in that, the sidepiece of described reactor or top are provided with access door (6).
7. the special Benitration reactor of coke oven exhaust gas according to claim 1, is characterized in that, the below that is positioned at described gas approach in reactor is provided with ash discharge storehouse (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259848.1U CN203816510U (en) | 2014-05-20 | 2014-05-20 | Denitration reactor special for coke oven waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420259848.1U CN203816510U (en) | 2014-05-20 | 2014-05-20 | Denitration reactor special for coke oven waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203816510U true CN203816510U (en) | 2014-09-10 |
Family
ID=51472054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420259848.1U Expired - Lifetime CN203816510U (en) | 2014-05-20 | 2014-05-20 | Denitration reactor special for coke oven waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203816510U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178948A (en) * | 2016-08-25 | 2016-12-07 | 国网河南省电力公司电力科学研究院 | A kind of Novel SCR denitrating system based on the escaping of ammonia catalytic eliminating |
| CN107335389A (en) * | 2017-09-07 | 2017-11-10 | 安徽晨晰洁净科技有限公司 | A kind of Novel SCR Benitration reactor |
| CN108722180A (en) * | 2018-07-23 | 2018-11-02 | 唐山钢铁集团有限责任公司 | A kind of smoke catalytic denitration device and catalytic denitration method |
-
2014
- 2014-05-20 CN CN201420259848.1U patent/CN203816510U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178948A (en) * | 2016-08-25 | 2016-12-07 | 国网河南省电力公司电力科学研究院 | A kind of Novel SCR denitrating system based on the escaping of ammonia catalytic eliminating |
| CN107335389A (en) * | 2017-09-07 | 2017-11-10 | 安徽晨晰洁净科技有限公司 | A kind of Novel SCR Benitration reactor |
| CN108722180A (en) * | 2018-07-23 | 2018-11-02 | 唐山钢铁集团有限责任公司 | A kind of smoke catalytic denitration device and catalytic denitration method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 238000 Anhui city of Hefei province Chaohu city business building, South Peak Juchao District building 8FD Patentee after: TONGXING ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 238000 Anhui city of Hefei province Chaohu city business building, South Peak Juchao District building 8FD Patentee before: Anhui Tongxing Environmental Protection Engineering Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |