CN203899459U - Impulse type steam soot blower for SCR (Selective Catalytic Reduction) denitrification device - Google Patents
Impulse type steam soot blower for SCR (Selective Catalytic Reduction) denitrification device Download PDFInfo
- Publication number
- CN203899459U CN203899459U CN201420350734.8U CN201420350734U CN203899459U CN 203899459 U CN203899459 U CN 203899459U CN 201420350734 U CN201420350734 U CN 201420350734U CN 203899459 U CN203899459 U CN 203899459U
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- Prior art keywords
- steam
- bags
- storage package
- scr
- steam storage
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Links
- 239000004071 soot Substances 0.000 title abstract 3
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract 2
- 230000002411 adverse Effects 0.000 claims description 30
- 230000001174 ascending effect Effects 0.000 claims description 30
- 238000011010 flushing procedure Methods 0.000 abstract 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 18
- 229910021529 ammonia Inorganic materials 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- -1 after mixing Chemical compound 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Chimneys And Flues (AREA)
Abstract
The utility model discloses an impulse type steam soot blower for an SCR (Selective Catalytic Reduction) denitrification device. The impulse type steam soot blower comprises a first steam storage package, a second steam storage package, a third steam storage package and a fourth steam storage package, which are arranged at two symmetrical sides of the SCR denitrification device, wherein the first steam storage package and the second steam storage package are communicated with each other and are positioned at the same side, the third steam storage package and the fourth steam storage package are communicated with each other and are positioned at the other side, the first steam storage package and the third steam storage package are connected with a same steam input pipeline, the first steam storage package, the second steam storage package, the third steam storage package and the fourth steam storage package are all communicated with main air flushing pipelines by pulse valves, the main air flushing pipelines stretch into the SCR denitrification device, one end, stretching into the SCR denitrification device, of each main air flushing pipeline is communicated with a plurality of air flushing branched pipes perpendicular to the main air flushing pipeline, and a plurality of air flushing holes are distributed in each air flushing branched pipe.
Description
Technical field
The utility model relates to a kind of pulsed steam soot-blower for SCR denitrification apparatus, belongs to environmental protection equipment technical field.
Background technology
SCR denitration technology is high with its removal efficiency, adapt to current environmental requirement and obtain power industry pay much attention to and widely application.In for example Germany of the strict developed country of environmental requirement, Japan, the U.S., Canada, Holland, Austria, Sweden, the state SCR denitration technologies such as Denmark be apply at most, one of the most ripe technology.According to the experience of developed country, SCR denitration technology will inevitably become the main denitration technology of China's firepower power station coal-burning boiler and obtain applying more and more widely.SCR system generally sprays into system, reactor assembly, economizer bypass, SCR bypass, detection control system etc. by stocking system, ammonia and air hybrid system, the ammonia of ammonia and forms.Liquefied ammonia from liquefied ammonia tank vehicle by the discharging compressor liquefied ammonia storage tank of making a gift to someone, after being evaporated to ammonia, evaporator tank enters people's boiler area by ammonia dashpot and conveyance conduit again, react by entering SCR inside reactor by distribution pilot valve after evenly mixing with air, SCR reactor is arranged at before air preheater, ammonia is above SCR reactor, be uniformly distributed mixing by a kind of special sprayer unit and flue gas, after mixing, flue gas carries out reduction reaction by catalyst in reactor layer.In this course of work, in SCR denitrification apparatus, there will be fouling phenomenon, thereby have influence on denitration reaction efficiency.
Utility model content
The purpose of this utility model is, a kind of pulsed steam soot-blower for SCR denitrification apparatus is provided.It can efficiently be removed the dust stratification in SCR denitrification apparatus all sidedly, thereby improves the operating efficiency of SCR denitrification apparatus.
The technical solution of the utility model: for the pulsed steam soot-blower of SCR denitrification apparatus, be characterized in: the first steam savings bag, the second steam savings bag, the 3rd steam savings bag and the 4th steam savings bag that comprise the both sides of being located at SCR denitrification apparatus symmetry; Wherein the first steam savings bag and the second steam savings bag are interconnected, and are positioned at the same side, and the 3rd steam savings bag and the 4th steam savings bag are also interconnected, and are positioned at opposite side; Described the first steam savings bag and the 3rd steam savings bag are connected to same steam input pipe road; Described the first steam savings bag, the second steam savings bag, the 3rd steam savings bag and the savings of the 4th steam are wrapped all and are communicated with qi of chong channel ascending adversely main pipeline by pulse valve, qi of chong channel ascending adversely main pipeline stretches in SCR denitrification apparatus, and one end that qi of chong channel ascending adversely main pipeline stretches in SCR denitrification apparatus is communicated with many qi of chong channel ascending adversely arms perpendicular to qi of chong channel ascending adversely main pipeline, is placed with multiple qi of chong channel ascending adversely hole on qi of chong channel ascending adversely arm.Each qi of chong channel ascending adversely arm can form a planar array in denitrification apparatus.
The above-mentioned pulsed steam soot-blower for SCR denitrification apparatus, described the second steam savings bag and the 4th steam savings bag are communicated to pressure release gas ducting by the first relief valve and the second relief valve respectively, pressure release gas ducting stretches in SCR denitrification apparatus, and stretches into and in the part in SCR denitrification apparatus, be placed with multiple qi of chong channel ascending adversely hole.
The aforesaid pulsed steam soot-blower for SCR denitrification apparatus, described steam input pipe road is provided with flow control valve and switch valve.
Compared with prior art, the utility model is by arranging multiple steam savings bags in the both sides of SCR denitrification apparatus, and utilize steam in pulse valve released vapour savings bag to the qi of chong channel ascending adversely hole on qi of chong channel ascending adversely arm to discharge, whole steam discharge process can be the process of a pressure accumulation, pulse qi of chong channel ascending adversely, adopt the exhaust mode of pulsed, can there is larger instantaneous impact, therefore blow grey effect more remarkable.In addition, the utility model is utilizing the overvoltage dispose procedure of steam savings bag, the steam that overvoltage is discharged is also for blowing grey operation, and overvoltage dispose procedure is a unordered chance event, therefore coordinate the orderly pulse gassing mode of pulse valve, can more effectively eliminate dust stratification, thereby improve the operating efficiency of SCR denitrification apparatus.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Being labeled as in accompanying drawing: 1-SCR denitrification apparatus, 2-the first steam savings bag, 3-the second steam savings bag, 4-the 3rd steam savings bag, 5-the 4th steam savings bag, 6-switch valve, 7-flow control valve, 8-pulse valve, 9-qi of chong channel ascending adversely main pipeline, 10-qi of chong channel ascending adversely arm, 11-the first relief valve, 12-the second relief valve, 13-pressure release gas ducting.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.For the pulsed steam soot-blower of SCR denitrification apparatus, as shown in Figure 1: the first steam savings bag 2, the second steam savings bag 3, the 3rd steam savings bag 4 and the 4th steam savings bag 5 that comprise the both sides of being located at SCR denitrification apparatus 1 symmetry; Wherein the first steam savings bag 2 and the second steam savings bag 3 are interconnected, and are positioned at the same side, and the 3rd steam savings bag 4 and the 4th steam savings bag 5 are also interconnected, and are positioned at opposite side; Described the first steam savings bag 2 and the 3rd steam savings bag 4 are connected to same steam input pipe road; On described the first steam savings bag 2, the second steam savings bag 3, the 3rd steam savings bag 4 and the 4th steam savings bag 5, be all communicated with qi of chong channel ascending adversely main pipeline 9 by pulse valve 8, qi of chong channel ascending adversely main pipeline 9 stretches in SCR denitrification apparatus 1, and one end that qi of chong channel ascending adversely main pipeline 9 stretches in SCR denitrification apparatus 1 is communicated with many qi of chong channel ascending adversely arms 10 perpendicular to qi of chong channel ascending adversely main pipeline 9, is placed with multiple qi of chong channel ascending adversely hole on qi of chong channel ascending adversely arm 10.Described the second steam savings bag 3 and the 4th steam savings bag 5 are communicated to pressure release gas ducting 13 by the first relief valve 11 and the second relief valve 12 respectively, pressure release gas ducting 13 stretches in SCR denitrification apparatus 1, and stretches into and in the part in SCR denitrification apparatus 1, be placed with multiple qi of chong channel ascending adversely hole.Described steam input pipe road is provided with flow control valve 7 and switch valve 6.
A kind of mode of operation of the present utility model: first the first steam savings bag 2, the second steam savings bag 3, the 3rd steam savings bag 4 and the 4th steam savings bag 5 are continued to pressure accumulation, when the steam pressure in steam savings bag 4 reaches after certain value, pulse valve 8 has opening of pulsed to cut out to blow grey operation, in the time that the pressure in steam savings bag is excessive, the first relief valve 11 or the second relief valve 12 are opened exhaust pressure relief, and the gas of discharging can carry out secondary and blows ash.
Claims (3)
1. for the pulsed steam soot-blower of SCR denitrification apparatus, it is characterized in that: comprise the first steam savings bags (2), the second steam savings bags (3), the 3rd steam savings bags (4) and the 4th steam savings bags (5) of being located at the symmetrical both sides of SCR denitrification apparatus (1); Wherein the first steam savings bags (2) and the second steam savings bags (3) are interconnected, and are positioned at the same side, and the 3rd steam savings bags (4) and the 4th steam savings bags (5) are also interconnected, and are positioned at opposite side; Described the first steam savings bags (2) and the 3rd steam savings bags (4) are connected to same steam input pipe road; On described the first steam savings bags (2), the second steam savings bags (3), the 3rd steam savings bags (4) and the 4th steam savings bags (5), be all communicated with qi of chong channel ascending adversely main pipeline (9) by pulse valve (8), qi of chong channel ascending adversely main pipeline (9) stretches in SCR denitrification apparatus (1), and one end that qi of chong channel ascending adversely main pipeline (9) stretches in SCR denitrification apparatus (1) is communicated with many qi of chong channel ascending adversely arms (10) perpendicular to qi of chong channel ascending adversely main pipeline (9), is placed with multiple qi of chong channel ascending adversely hole on qi of chong channel ascending adversely arm (10).
2. the pulsed steam soot-blower for SCR denitrification apparatus according to claim 1, it is characterized in that: described the second steam savings bags (3) and the 4th steam savings bags (5) are communicated to pressure release gas ducting (13) by the first relief valve (11) and the second relief valve (12) respectively, pressure release gas ducting (13) stretches in SCR denitrification apparatus (1), and stretches in the part in SCR denitrification apparatus (1) and be placed with multiple qi of chong channel ascending adversely hole.
3. the pulsed steam soot-blower for SCR denitrification apparatus according to claim 1, is characterized in that: described steam input pipe road is provided with flow control valve (7) and switch valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350734.8U CN203899459U (en) | 2014-06-27 | 2014-06-27 | Impulse type steam soot blower for SCR (Selective Catalytic Reduction) denitrification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350734.8U CN203899459U (en) | 2014-06-27 | 2014-06-27 | Impulse type steam soot blower for SCR (Selective Catalytic Reduction) denitrification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203899459U true CN203899459U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420350734.8U Expired - Lifetime CN203899459U (en) | 2014-06-27 | 2014-06-27 | Impulse type steam soot blower for SCR (Selective Catalytic Reduction) denitrification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203899459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311958A (en) * | 2015-11-30 | 2016-02-10 | 华电电力科学研究院 | Online denitration catalyst regeneration device and method |
-
2014
- 2014-06-27 CN CN201420350734.8U patent/CN203899459U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311958A (en) * | 2015-11-30 | 2016-02-10 | 华电电力科学研究院 | Online denitration catalyst regeneration device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |