CN107303467A - A kind of SCR denitration reactor - Google Patents
A kind of SCR denitration reactor Download PDFInfo
- Publication number
- CN107303467A CN107303467A CN201610253664.8A CN201610253664A CN107303467A CN 107303467 A CN107303467 A CN 107303467A CN 201610253664 A CN201610253664 A CN 201610253664A CN 107303467 A CN107303467 A CN 107303467A
- Authority
- CN
- China
- Prior art keywords
- reactor body
- inlet
- scr denitration
- flue gas
- flow deflector
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A kind of SCR denitration reactor, with reactor body, reactor body, which has, is provided with multilayer denitrating catalyst in upper side-inlet and downside air outlet, reactor body, and connects inlet air stack by bent angle flue in inlet port；Provided with one group of flue gas flow guiding device in bent angle flue, flue gas flow guiding device includes the flow deflector that several are arranged side by side, and flow deflector constitutes doubled-over configuration by two pieces of flat boards, and the scope to knuckle α is 130~160 degree；On flow deflector, the flat board and the angle β of horizontal plane scope arranged towards inlet air stack side are 45~50 degree, and some air-vents are offered on the flat board of the inlet port arrangement towards reactor body；The present invention is simple in construction, ingenious in design, it is ensured that input flue gas（Include ammonia, oxygen and NOx）It is evenly distributed on denitrating catalyst, increases time of contact and the contact area of catalytic reaction, be effectively improved the reaction efficiency of SCR denitration reactor, save reaction cost.
Description
Technical field
The present invention relates to technical field of environment protection equipment, especially a kind of SCR denitration reactor.
Background technology
SCR flue gas denitrification systems are the system for carrying out denitration to flue gas using selective catalytic reduction, SCR denitrating flue gas
Technology refers under conditions of catalyst and oxygen are present, (being usually in 310-420 DEG C), reducing agent in the range of low temperature
(typically using ammonia) selectively reduces to the NOx in flue gas, generates N2 and water to reduce the technology of NOx discharges.
SCR denitration reactor within the system is then very crucial equipment.But, in practice, it has been found that existing
The flue gas flow guiding device of the inlet port of SCR denitration reactor is complicated, and designs unreasonable, causes defeated from inlet air stack
The flue gas brought（Include ammonia, oxygen and NOx）It is not uniformly distributed on denitrating catalyst and carries out catalytic reaction, flue gas
Contact area with denitrating catalyst is small, and time of contact is short, and then causes the reaction efficiency of SCR denitration reactor to substantially reduce,
The air outlet oxynitrides of SCR denitration reactor（NOx）Escape too high with ammonia, cause huge economic loss.
The content of the invention
Present invention aim to the flue gas flow guiding device for solving current SCR denitration reactor it is complicated, design not
Rationally, the reaction efficiency of SCR denitration reactor is caused to substantially reduce, and the oxynitrides of SCR denitration reactor air outlet
（NOx）With too high, the problem of the causing huge economic loss of ammonia escape, a kind of efficient SCR denitration reactor is provided for this.
The present invention concrete scheme be：A kind of SCR denitration reactor, with reactor body, reactor body has upper
Multilayer denitrating catalyst is provided with side-inlet and downside air outlet, reactor body, and passes through bent angle flue in inlet port
Connect inlet air stack；It is characterized in that：Provided with one group of flue gas flow guiding device in the bent angle flue, flue gas flow guiding device includes some
The individual flow deflector being arranged side by side, flow deflector constitutes doubled-over configuration by two pieces of flat boards, and the scope to knuckle α is 130~160 degree, respectively
The fold point of individual flow deflector is distributed on same straight line；On flow deflector, the flat board and level arranged towards inlet air stack side
The angle β in face scope is 45~50 degree, is offered on the flat board of the inlet port arrangement towards reactor body some ventilative
Hole.
Heretofore described flow deflector is provided with four.
Homogenating plate is provided with the present invention at the air inlet of reactor body, offers on homogenating plate and some uniformly to arrange
Square lattice or circular hole.
Heretofore described denitrating catalyst is provided with three layers, and every layer of denitrating catalyst is respectively cellular catalyst or ripple
Board-like catalyst.
The present invention is simple in construction, ingenious in design, by the structure and arrangement mode that reasonably set flow deflector so that input
The flue gas of SCR denitration reactor（Include ammonia, oxygen and NOx）It can be evenly distributed on denitrating catalyst, so that significantly
Time of contact and the contact area of catalytic reaction are increased, and then is effectively improved the reaction efficiency of SCR denitration reactor, is dropped
Low oxynitrides（NOx）With ammonia escape amount, reaction cost is saved.
Brief description of the drawings
Fig. 1 is the cross-sectional view of the present invention；
Fig. 2 is the structural representation of flue gas flow guiding device in the present invention.
In figure：1-reactor body, 2-air inlet, 3-air outlet, 4-denitrating catalyst, 5-bent angle flue, 6-
Inlet air stack, 7-flue gas flow guiding device, 8-flow deflector, 9-air-vent, 10-homogenating plate.
Embodiment
Referring to Fig. 1, Fig. 2, a kind of SCR denitration reactor, with reactor body 1, reactor body 1 has upside air inlet
Multilayer denitrating catalyst 4 is provided with mouth 2 and downside air outlet 3, reactor body 1, and is led in the inlet port of reactor body 1
Cross the connection inlet air stack 6 of bent angle flue 5；Provided with one group of flue gas flow guiding device 7 in the bent angle flue 5, flue gas flow guiding device 7 is wrapped
Four flow deflectors being arranged side by side 8 are included, flow deflector 8 constitutes doubled-over configuration by two pieces of flat boards, the scope to knuckle α is 130~160
Degree, the fold point of each flow deflector is distributed on same straight line, and the straight line is represented with K in Fig. 1；On flow deflector 8, court enters
The flat board of the side of gas flue 6 arrangement and the angle β of horizontal plane scope are 45~50 degree, in the air inlet towards reactor body 1
Some air-vents 9 are offered on the flat board for holding arrangement, for further carrying out diverging processing to the flue gas that conveying comes.
Air inlet 2 in the present embodiment in reactor body 1 is provided with homogenating plate 10, offers on homogenating plate 10 some uniform
The square lattice or circular hole of arrangement, homogenating plate 10 are used to vertically carry out to inputting to the flue gas in reactor body 1
Uniform divided flows processing, so that flue gas, which is evenly distributed on denitrating catalyst, carries out catalytic reaction.
Denitrating catalyst 4 described in the present embodiment be provided with three layers, every layer of denitrating catalyst be respectively cellular catalyst or
Corrugated plate dst catalyst.
Claims (4)
1. a kind of SCR denitration reactor, with reactor body, reactor body has upper side-inlet and downside air outlet,
Multilayer denitrating catalyst is provided with reactor body, and inlet air stack is connected by bent angle flue in inlet port；It is characterized in that：
Provided with one group of flue gas flow guiding device in the bent angle flue, flue gas flow guiding device includes the flow deflector that several are arranged side by side, led
Flow constitutes doubled-over configuration by two pieces of flat boards, and the scope to knuckle α is 130~160 degree, and the fold point of each flow deflector is distributed in
On same straight line；On flow deflector, the flat board and the angle β of horizontal plane scope arranged towards inlet air stack side are 45~50
Degree, some air-vents are offered on the flat board of the inlet port arrangement towards reactor body.
2. a kind of SCR denitration reactor according to claim 1, it is characterized in that：The flow deflector is provided with four.
3. a kind of SCR denitration reactor according to claim 1, it is characterized in that：Set at the air inlet of reactor body
Have and some square lattices or circular hole uniformly arranged are offered on homogenating plate, homogenating plate.
4. a kind of SCR denitration reactor according to claim 1, it is characterized in that：The denitrating catalyst is provided with three layers, often
Layer denitrating catalyst is respectively cellular catalyst or corrugated plate dst catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253664.8A CN107303467A (en) | 2016-04-22 | 2016-04-22 | A kind of SCR denitration reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610253664.8A CN107303467A (en) | 2016-04-22 | 2016-04-22 | A kind of SCR denitration reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107303467A true CN107303467A (en) | 2017-10-31 |
Family
ID=60151720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610253664.8A Pending CN107303467A (en) | 2016-04-22 | 2016-04-22 | A kind of SCR denitration reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107303467A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453720A (en) * | 2018-11-21 | 2019-03-12 | 永康市都迪工贸有限公司 | A kind of tubular reactor and hydrogen purification system |
| CN110252138A (en) * | 2019-07-25 | 2019-09-20 | 河北威达蓝海环保科技有限公司 | A kind of device slowing down SCR Faveolate denitration catalyst deactivation rate |
| CN113578403A (en) * | 2021-07-22 | 2021-11-02 | 达尔（广州）生物科技有限公司 | Biological safety cabinet with uniform downdraft |
-
2016
- 2016-04-22 CN CN201610253664.8A patent/CN107303467A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109453720A (en) * | 2018-11-21 | 2019-03-12 | 永康市都迪工贸有限公司 | A kind of tubular reactor and hydrogen purification system |
| CN110252138A (en) * | 2019-07-25 | 2019-09-20 | 河北威达蓝海环保科技有限公司 | A kind of device slowing down SCR Faveolate denitration catalyst deactivation rate |
| CN113578403A (en) * | 2021-07-22 | 2021-11-02 | 达尔（广州）生物科技有限公司 | Biological safety cabinet with uniform downdraft |
| CN113578403B (en) * | 2021-07-22 | 2022-12-02 | 达尔（广州）生物科技有限公司 | Biological safety cabinet with uniform downdraft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171031 |
|
| WD01 | Invention patent application deemed withdrawn after publication |