CN203829922U - Selective catalytic-reduction denitration equipment - Google Patents
Selective catalytic-reduction denitration equipment Download PDFInfo
- Publication number
- CN203829922U CN203829922U CN201420236038.4U CN201420236038U CN203829922U CN 203829922 U CN203829922 U CN 203829922U CN 201420236038 U CN201420236038 U CN 201420236038U CN 203829922 U CN203829922 U CN 203829922U
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- denitration
- furnace
- flue
- catalytic
- gas flow
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Abstract
The utility model relates to selective catalytic-reduction denitration equipment. The selective catalytic-reduction denitration equipment comprises a denitration furnace, wherein a plurality of reducer spray guns are distributed in a furnace chamber of the denitration furnace; in a flue of the denitration furnace, according to the flue gas flow direction, a coal economizer is arranged at an upstream section, a plurality of ammonia gas flow circulating plates are arranged at a midstream section; the ammonia gas flow circulating plates are bowel-shaped and provided with air holes on center; heating tube groups are arranged among the coal economizer and the ammonia gas flow circulating plates, and between the ammonia gas flow circulating plates; a partition plate is arranged at a downstream section of the flue of the denitration furnace; and a plurality of catalyst blocking layers are arranged at the upstream of the partition plate. According to the utility model, a selective catalytic-reduction denitration technology and a non-catalytic-reduction denitration technology are combined, catalytic denitration ability is taken as the principal thing, and a few high-temperature heating chambers are supplemented to carry out initial treatment, so that defects that the conventional selective catalytic-reduction denitration equipment needs much high-price catalyst, further needs greater installation space, investment and operation cost, and the like, are overcome.
Description
Technical field
The utility model relates to a kind of selective-catalytic-reduction denitrified equipment.
Background technology
In the flue gas that combustion of fossil fuel produces, contain a large amount of nitrogen oxide, as sour gas, nitrogen oxide is one of atmosphere pollution forming acid rain and acid mist, and ecological environment and health are had to huge harm.Nitrogen oxide in flue gas under certain conditions, can with nitrogenous reducing agent generation reduction reaction, generate the water and the nitrogen that environment are not caused to secondary pollution.This reduction reaction can occur in relatively lower temperature, but need to could react in the catalytic action of catalyst, and this technique is called SCR technology.SCR technology has advantages of that denitration efficiency is high, the escaping of ammonia rate is low, but needs a large amount of catalyst and catalyst expensive, also needs larger installing space, investment and operating cost high.In addition, due to the restriction in original boiler place, old boiler SCR transformation difficulty is very large.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned defect that how to overcome prior art, and a kind of selective-catalytic-reduction denitrified equipment is provided.
For solving the problems of the technologies described above, this selective-catalytic-reduction denitrified equipment, comprise denitration furnace, in the burner hearth of this denitration furnace, lay many group reducing agent spray guns, in the flue of denitration furnace, according to flue gas flow direction, Upstream section is provided with economizer and ammonia flow circulation plates, this ammonia flow circulation plates is a bowl type, its central authorities are provided with air-vent, between described economizer and ammonia flow circulation plates, ammonia flow circulation plates, be equipped with heating tube group, dividing plate together with the flue middle reaches section of denitration furnace is respectively provided with tract, and be provided with some catalyst interlayers in per pass dividing plate upstream.
As optimization, totally two groups of described catalyst interlayers, three layers every group, wherein one group of catalyst interlayer is evenly laid between described ammonia flow circulation plates and dividing plate, and another group catalyst interlayer is evenly laid between the flue middle reaches section and the dividing plate of tract of denitration furnace.
A kind of selective-catalytic-reduction denitrified equipment of the utility model combines the catalytic-reduction denitrified technology of the property selected with non-catalytic reduction denitration technology, take catalytic denitration ability as main, assist with a small amount of high-temperature heating chamber and carry out just processing, needs that traditional selective-catalytic-reduction denitrified equipment exists a large amount of catalyst and catalyst have been overcome expensive, also need the defects such as larger installing space, investment and operating cost height, and applicable conventional boiler is carried out specific aim improvement.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, a kind of selective-catalytic-reduction denitrified equipment of the utility model is described further:
Fig. 1 is the planar structure schematic diagram of this selective-catalytic-reduction denitrified equipment.
In figure: 1-denitration furnace, 2-burner hearth, 3-reducing agent spray gun, 4-flue, 5-economizer, 6-ammonia flow circulation plates, 7-heating tube group, 8-dividing plate, 9-catalyst interlayer.
The specific embodiment
As shown in Figure 1, this selective-catalytic-reduction denitrified equipment, comprise denitration furnace 1, reducing agent spray gun 3 is organized in the interior laying of burner hearth 2 of this denitration furnace 1 more, in the flue 4 of denitration furnace 1, according to flue gas flow direction, Upstream section is provided with economizer 5 and ammonia flow circulation plates 6, this ammonia flow circulation plates 6 is a bowl type, its central authorities are provided with air-vent, between described economizer 5 and ammonia flow circulation plates 6, ammonia flow circulation plates 6, be equipped with heating tube group 7, dividing plate 8 together with the flue 4 middle reaches sections of denitration furnace 1 are respectively provided with tract, and be provided with some catalyst interlayers 9 in per pass dividing plate 8 upstreams.Totally two groups of described catalyst interlayers 9, three layers every group, wherein one group of catalyst interlayer 9 is evenly laid between described ammonia flow circulation plates 6 and dividing plate 8, and another group catalyst interlayer 9 is evenly laid between the flue 4 middle reaches sections and the dividing plate 8 of tract of denitration furnace 1.
Above-mentioned embodiment is intended to illustrate the utility model and can be professional and technical personnel in the field's realization or use; it will be apparent for those skilled in the art that above-mentioned embodiment is modified; therefore the utility model includes but not limited to above-mentioned embodiment; any these claims or description of meeting described; meet the product with principle disclosed herein and novelty, inventive features, within all falling into protection domain of the present utility model.
Claims (2)
1. a selective-catalytic-reduction denitrified equipment, comprise denitration furnace (1), it is characterized in that: in the burner hearth (2) of this denitration furnace (1), lay many group reducing agent spray guns (3), in the flue (4) of denitration furnace (1), according to flue gas flow direction, Upstream section is provided with economizer (5) and ammonia flow circulation plates (6), this ammonia flow circulation plates (6) is a bowl type, its central authorities are provided with air-vent, described economizer (5) and ammonia flow circulation plates (6), between ammonia flow circulation plates (6), be equipped with heating tube group (7), dividing plate (8) together with flue (4) the middle reaches section of denitration furnace (1) is respectively provided with tract, and be provided with some catalyst interlayers (9) in per pass dividing plate (8) upstream.
2. selective-catalytic-reduction denitrified equipment according to claim 1, it is characterized in that: totally two groups of described catalyst interlayers (9), every group three layers, wherein one group of catalyst interlayer (9) is evenly laid between described ammonia flow circulation plates (6) and dividing plate (8), and another group catalyst interlayer (9) is evenly laid between flue (4) the middle reaches section of denitration furnace (1) and the dividing plate (8) of tract.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420236038.4U CN203829922U (en) | 2014-05-09 | 2014-05-09 | Selective catalytic-reduction denitration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420236038.4U CN203829922U (en) | 2014-05-09 | 2014-05-09 | Selective catalytic-reduction denitration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203829922U true CN203829922U (en) | 2014-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420236038.4U Expired - Fee Related CN203829922U (en) | 2014-05-09 | 2014-05-09 | Selective catalytic-reduction denitration equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN203829922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890777A (en) * | 2017-11-28 | 2018-04-10 | 辽宁鑫隆科技有限公司 | A kind of catalytic-reduction denitrified method of dry method |
-
2014
- 2014-05-09 CN CN201420236038.4U patent/CN203829922U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890777A (en) * | 2017-11-28 | 2018-04-10 | 辽宁鑫隆科技有限公司 | A kind of catalytic-reduction denitrified method of dry method |
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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: 20140917 Termination date: 20150509 |
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| EXPY | Termination of patent right or utility model |