CN203123830U - Denitration SCR (Selective Catalytic Reduction) reactor for waste gas treatment of steam power plant - Google Patents
Denitration SCR (Selective Catalytic Reduction) reactor for waste gas treatment of steam power plant Download PDFInfo
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- CN203123830U CN203123830U CN 201320069199 CN201320069199U CN203123830U CN 203123830 U CN203123830 U CN 203123830U CN 201320069199 CN201320069199 CN 201320069199 CN 201320069199 U CN201320069199 U CN 201320069199U CN 203123830 U CN203123830 U CN 203123830U
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- denitration
- flue gas
- power plant
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- gas treatment
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Abstract
The utility model belongs to the technical field of environment-friendly equipment and in particular relates to a denitration SCR (Selective Catalytic Reduction) reactor for waste gas treatment of a steam power plant, aiming at solving the technical problems of unreasonable design, short service life and the like in the prior art. The denitration SCR reactor for waste gas treatment of the steam power plant comprises a shell provided with a flue gas conveying channel, wherein one end of the flue gas conveying channel is a gas inlet end, and the other end of the flue gas conveying channel is a gas outlet end; a plurality of denitration trays which are arranged at uniform intervals and made of a high-strength air-permeable ceramic material are arranged on the inner wall of the flue gas conveying channel; and a catalyst is placed on each denitration tray. Compared with the prior art, the denitration SCR reactor has the advantages that the service life of the denitration trays made of the high-strength air-permeable ceramic material is prolonged, in addition, the denitration trays can be repaired after being damaged, and therefore the use cost is reduced to a certain degree, and the current trend of technical development is met; and the operating efficiency of a unit is improved.
Description
Technical field
The utility model belongs to the environmental protection equipment technical field, especially relates to a kind of denitration SCR reactor for the steam power plant exhaust-gas treatment.
Background technology
Realize that the strategy of sustainable development has become an important basic principle of Chinese society's economic development; in the face of how realizing economic long-term high speed development; protect simultaneously this social practice problem of environment again, environmental protection has become the important step that realizes the Chinese society sustainable economic development.The SCR reactor is the core in the flue-gas denitration process system, is to guarantee that nitrogen oxide and reducing agent reduction reaction take place, reach the key of expecting denitration efficiency in suitable temperature range.The reasonability of its design directly influences the normal operation of whole denitrating system and the denitration efficiency that guarantees denitrating system, and development has proposed stricter requirement to the SCR DESIGN OF REACTOR for this; At present, the framework of conventional SCR denitrification apparatus reaction is made of many H shaped steel crossbeams and a plurality of column, wallboard is installed in the framework outside, the inner brace summer that adopts H shaped steel to be used as catalyst, during use, easy dust stratification causes the inside reactor dust stratification too much on the H shaped steel, inhomogeneous to the inside reactor flue gas flow field, reaction effect is relatively poor.In addition, the service life of this brace summer is short, needs often to change, and has increased use cost virtually.
For this reason, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of SCR denitrification apparatus structure of reactor [application number: 201220115810.8], comprise the framework that is constituted by many H shaped steel crossbeams, it is characterized in that: described framework inboard is provided with wallboard, the top is provided with the upper body of band gas approach, the bottom is provided with the lower case of band exhanst gas outlet, and framework inside is provided with some brace summers, and brace summer is provided with catalyst.Though such scheme has improved the partial technical problems of pre-existing reactors to a certain extent, but, how existing brace summer is general is made by Gao Luotie, characteristics such as this material tool is high temperature resistant, resistance to deformation, but it is short service life with the brace summer that this material is made, thereby cause and to change frequently, increased use cost, do not meet the trend of current techniques development.
The utility model content
The purpose of this utility model is at the problems referred to above, provides a kind of design more reasonable, long service life, recoverable denitration SCR reactor for the steam power plant exhaust-gas treatment.
For achieving the above object, the utility model has adopted following technical proposal: this denitration SCR reactor that is used for the steam power plant exhaust-gas treatment comprises the housing with flue gas transfer passage, one end of this flue gas transfer passage is inlet end, the other end is the outlet side, it is characterized in that, described flue gas transfer passage inwall is provided with some intervals evenly and by the denitration pallet that high strength gas permeability ceramic material is made, is respectively equipped with catalyst at each denitration pallet.Obviously, the denitration pallet that the high strength gas permeability ceramic material of this reactor is made has prolonged service life, in addition, when it is damaged, can repairs it, thereby reduce use cost to a certain extent, meets the trend of current techniques development.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described denitration pallet is ceramic cloth.Long service life has improved the efficient of unit operation, and in addition, it can also be repaired, and cost is low.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described denitration pallet is fixed on the flue gas transfer passage inwall of housing by removable structure.Removable structure comprises some by the high temperature resistant screw made from the strong material of non-deformability.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described catalyst is the honeycomb fashion catalyst.Guarantee the denitration efficiency of reactor.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described flue gas transfer passage inlet end is provided with flue gas stream fairing.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described flue gas stream fairing comprises flue gas stream honeycomb screen.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described flue gas transfer passage outlet side is provided with flow dividing structure.
At the above-mentioned denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, described flow dividing structure comprises some flow distribution plates, forms split channel between two adjacent flow distribution plates.
Compared with prior art, this advantage that is used for the denitration SCR reactor of steam power plant exhaust-gas treatment is: 1, design is more reasonable, simple in structure.2, the denitration pallet made of high strength gas permeability ceramic material has prolonged service life, in addition, when it is damaged, can repairs it, thereby reduce use cost to a certain extent, meets the trend of current techniques development.3, improved the operational efficiency of unit.
Description of drawings
Fig. 1 is the structural representation that the utility model provides.
Among the figure, housing 1, flue gas transfer passage 1a, denitration pallet 2, catalyst 3, flue gas stream honeycomb screen 4, flow distribution plate 51, split channel 52.
The specific embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, this denitration SCR reactor that is used for the steam power plant exhaust-gas treatment comprises the housing 1 with flue gas transfer passage 1a, the end of this flue gas transfer passage 1a is inlet end, the other end is the outlet side, be provided with some intervals evenly and by the denitration pallet 2 that high strength gas permeability ceramic material is made, be respectively equipped with catalyst 3 at each denitration pallet 2 at flue gas transfer passage 1a inwall; The catalyst 3 here is the honeycomb fashion catalyst, and denitration pallet 2 is ceramic cloth; That pottery cloth has is high temperature resistant, thermal conductivity factor is low, anti-thermal shock, low heat capacity; The excellent high-temperature insulating properties, long service life; Have anti-molten aluminium, the non-ferrous metal etch abilities such as zinc touched; Have good low temperature and elevated temperature strength; Nontoxic, harmless, environment is had no adverse effects; Advantages such as construction install convenience.Obviously, the denitration pallet 2 that the high strength gas permeability ceramic material of present embodiment is made has prolonged service life, in addition, when it is damaged, can also repairs it, thereby reduce use cost to a certain extent, meets the trend of current techniques development.
Specifically, the denitration pallet 2 of present embodiment is fixed on the flue gas transfer passage 1a inwall of housing 1 by removable structure.Removable structure comprises some screws (not looking among the figure) that are located on the denitration pallet 2, and screw is threaded with housing 1.This screw is made by high temperature resistant and the strong material of non-deformability.
Secondly, be provided with flue gas stream fairing at flue gas transfer passage 1a inlet end.Prioritization scheme, this flue gas stream fairing comprises flue gas stream honeycomb screen 4.In addition, be provided with flow dividing structure in flue gas transfer passage 1a outlet side, this flow dividing structure comprises some flow distribution plates 51, forms split channel 52 between two adjacent flow distribution plates 51.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as housing 1, flue gas transfer passage 1a, denitration pallet 2, catalyst 3, flue gas stream honeycomb screen 4, flow distribution plate 51, split channel 52 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (8)
1. denitration SCR reactor that is used for the steam power plant exhaust-gas treatment, comprise the housing (1) with flue gas transfer passage (1a), one end of this flue gas transfer passage (1a) is inlet end, the other end is the outlet side, it is characterized in that, described flue gas transfer passage (1a) inwall is provided with some intervals evenly and by the denitration pallet (2) that high strength gas permeability ceramic material is made, is respectively equipped with catalyst (3) at each denitration pallet (2).
2. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 1 is characterized in that described denitration pallet (2) is ceramic cloth.
3. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 1 and 2 is characterized in that, described denitration pallet (2) is fixed on flue gas transfer passage (1a) inwall of housing (1) by removable structure.
4. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 1 is characterized in that described catalyst (3) is the honeycomb fashion catalyst.
5. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 1 and 2 is characterized in that, described flue gas transfer passage (1a) inlet end is provided with flue gas stream fairing.
6. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 5 is characterized in that, described flue gas stream fairing comprises flue gas stream honeycomb screen (4).
7. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 1 and 2 is characterized in that, described flue gas transfer passage (1a) outlet side is provided with flow dividing structure.
8. the denitration SCR reactor for the steam power plant exhaust-gas treatment according to claim 7 is characterized in that described flow dividing structure comprises some flow distribution plates (51), forms split channel (52) between adjacent two flow distribution plates (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069199 CN203123830U (en) | 2013-02-01 | 2013-02-01 | Denitration SCR (Selective Catalytic Reduction) reactor for waste gas treatment of steam power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069199 CN203123830U (en) | 2013-02-01 | 2013-02-01 | Denitration SCR (Selective Catalytic Reduction) reactor for waste gas treatment of steam power plant |
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| Publication Number | Publication Date |
|---|---|
| CN203123830U true CN203123830U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069199 Expired - Fee Related CN203123830U (en) | 2013-02-01 | 2013-02-01 | Denitration SCR (Selective Catalytic Reduction) reactor for waste gas treatment of steam power plant |
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| CN (1) | CN203123830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624015A (en) * | 2015-01-28 | 2015-05-20 | 东华大学 | Denitration test device for tunnels or metros |
-
2013
- 2013-02-01 CN CN 201320069199 patent/CN203123830U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104624015A (en) * | 2015-01-28 | 2015-05-20 | 东华大学 | Denitration test device for tunnels or metros |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20160201 |
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| CF01 | Termination of patent right due to non-payment of annual fee |