CN103170244B - The common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system - Google Patents
The common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system Download PDFInfo
- Publication number
- CN103170244B CN103170244B CN201310084279.1A CN201310084279A CN103170244B CN 103170244 B CN103170244 B CN 103170244B CN 201310084279 A CN201310084279 A CN 201310084279A CN 103170244 B CN103170244 B CN 103170244B
- Authority
- CN
- China
- Prior art keywords
- reactor
- smoke
- intake pipe
- pipe road
- wall panel
- 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.)
- Active
Links
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses the common wall construction in reactor and smoke-intake pipe road in a kind of flue gas denitrification system, relate to selective catalytic reduction (SCR) denitration technology.It comprises reactor and smoke-intake pipe road, smoke-intake pipe road and reactor share same wall panel at closed position place, wall panel is the long limit of reactor, wall panel is provided with vertical ribbed stiffener and sash rib in the side near reactor, wall panel, vertically two two-phase welding between ribbed stiffener and sash rib, the upper end of sash rib is provided with accumulatingdust swash plate, and the left end of accumulatingdust swash plate welds with vertical ribbed stiffener, and the right-hand member of accumulatingdust swash plate welds with wall panel.The present invention not only effectively reduces the impact that can effectively reduce sweep of gases, and then extends service life of the present invention, ensure that structural safety of the present invention is reliable, and safety of structure is higher, effectively can prevent dust stratification.
Description
Technical field
The present invention relates to selective catalytic reduction (SCR) denitration technology, specifically the common wall construction in reactor and smoke-intake pipe road in a kind of flue gas denitrification system.
Background technology
China's major part power source is obtained by combustion of fossil fuels.Fossil fuel source is unstable, and quality is also unstable, and often burn one ton of coal, about produces 5-30kg nitrogen oxide, and station boiler has become one of main atmosphere pollution fixed discharge source.
In order to improve atmosphere quality, country and some areas government have formulated increasingly severe discharged nitrous oxides standard for Thermal Power Generation Industry, require to take measures to carry out pollution control.The unit NOx emission concentration that " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2011) requires put into operation in the past for 2013 is not more than 200mg/Nm
3, the NOx emission concentration of new-built unit or key area unit is not more than 100mg/Nm
3.
For the NOx produced in removing fossil fuel combustion process, domestic general employing selective catalytic reduction (SCR) denitration technology.Under catalyst action, utilize the selective of amino reductive that NOx in flue gas is reduced into harmless N
2and H
2o, this reaction is mainly carried out in the reactor, and reactor is the device of denitrating system inner core and key, and meanwhile, the smoke-intake pipe road be connected with reactor and smoke pipeline are also indispensable parts in denitrating system.
As shown in the syndeton in reactor in Fig. 3 prior art 1 and smoke-intake pipe road 2, reactor 1 and smoke-intake pipe road 2 are independently container type structure, reactor 1 is arranged on the upper end of reactor bearing layer crossbeam 9, reactor 1 and smoke-intake pipe road 2 are equipped with wall panel, distance between the wall panel 5.1 of reactor and the wall panel 5.2 in smoke-intake pipe road is 1.2m-1.5m, reactor 1 is provided with expansion joint with the junction in smoke-intake pipe road 2, is provided with the supporting bracket 10 supporting smoke-intake pipe road 2 in the lower end of reactor 1 and reactor bearing layer crossbeam place.There is following drawback in this kind of version: the expansion joint of reactor 1 and connection, smoke-intake pipe road 2 adds the corresponding maintenance cost of cost of equipment and equipment; Need increase and arrange supporting bracket 10 to support smoke-intake pipe road 2, this can increase the consumption of supporting steel accordingly; Reactor 1 and smoke-intake pipe road 2 are in order to form enclosed construction and in order to bear corresponding flue gas pressures, reactor 1 and smoke-intake pipe road 2 need arrange independently wall panel and corresponding ribbed stiffener separately, this structure can make rolled steel dosage larger, accordingly, be arranged on outer casing expense used on reactor 1 and smoke-intake pipe road 2 and Thermal insulation Expense higher; Reactor 1 and smoke-intake pipe road 2 are provided with the requirement such as supporting construction and heat preservation construction to meet, usually require to need between two wall panels to reserve 1.2m-1.5m space, for improvement project, because stove rear space is narrow and small, the enforcement of the 1.2m-1.5m spacial influence reserved between two wall panels transformation.
Summary of the invention
The object of the invention is to the weak point overcoming above-mentioned background technology, and the common wall construction in reactor and smoke-intake pipe road in a kind of flue gas denitrification system is provided, it effectively can reduce rolled steel dosage, reduce expansion joint number of devices and insulation material consumption, make full use of small space after stove, ensure that improvement project is implemented smoothly and and reduces engineering cost.
The object of the invention is to be reached by following measure: the common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system, comprise reactor and smoke-intake pipe road, it is characterized in that: described reactor is also provided with wall panel, the vertical ribbed stiffener be connected with wall panel, the sash rib be connected with vertical ribbed stiffener; Described vertical ribbed stiffener and sash rib are all arranged on the side of the close reactor of wall panel; Described smoke-intake pipe road is attached to the side of reactor, and wall panel is the long limit of reactor, and described smoke-intake pipe road is connected with the wall panel of reactor; Described wall panel, vertical two two-phase welding between ribbed stiffener and sash rib; The upper end of sash rib is provided with accumulatingdust swash plate, and the left and right two ends of accumulatingdust swash plate are welded with sash rib and wall panel respectively.
In technique scheme, owing to making full use of the container type rigidity of structure, reactor and smoke-intake pipe road are made an entirety, between smoke-intake pipe road and reactor, expansion joint is not set, therefore the present invention, decrease the quantity of the expansion joint between reactor and smoke-intake pipe road, decrease equipment consumption and later maintenance renewal cost.Secondly, after smoke-intake pipe road and reactor share a wall panel, the corresponding ribbed stiffener that a wall panel also only need be set, meanwhile, press consistent in reactor and flue gas in smoke-intake pipe road, thus make that pressure size in wallboard both sides is identical, direction phase is cancelled out each other on the contrary, sash rib is stressed to be reduced greatly, cross section can only adopt by structure, and vertical ribbed stiffener also only bears vertical load, thus reduces reactor and smoke-intake pipe road rolled steel dosage.Finally, the common wall construction in reactor and smoke-intake pipe road, eliminates wherein to stay and establishes 1.2m-1.5m space, and corresponding diminishing put by bottom reactor supporting construction plain cloth, more has the enforcement utilizing transformation.
Oblique accumulatingdust plate is set between sash rib and wallboard and effectively can prevents dust stratification.
In technique scheme, described smoke-intake pipe road is attached to the side of reactor, is a structure entirety.Smoke-intake pipe road is attached to reactor-side, and the supporting bracket of reactor lower part does not need to raise and just can support smoke-intake pipe road, reduces the consumption of supporting steel.
To " wall panel, vertical two two-phases welding between ribbed stiffener and sash rib " is the simplest technical scheme wall panel, vertical ribbed stiffener are connected with sash rib.
In technique scheme, in real work engineering, in smoke-intake pipe road, velocity of flue gas can be greater than velocity of flue gas in reactor, ribbed stiffener is arranged on the side of the close reactor of wall panel, the impact of sweep of gases can be effectively reduced, and then increase the service life, ensure that structural safety is reliable.
Because being only provided with a wall panel between reactor and smoke-intake pipe road, when wall panel is the long limit of reactor, will effectively reduce the consumption of insulation material and outer casing.
To sum up, in flue gas denitrification system of the present invention, the common wall construction in reactor and smoke-intake pipe road effectively can reduce number of devices and corresponding maintenance cost, reduce the consumption of steel, insulation material and outer casing material, reduce the requirement to space in denitration transformation, and ensure structural safety, reduce corresponding engineering construction, operation and maintenance expense.
Accompanying drawing explanation
Fig. 1 is the connection diagram in reactor of the present invention and smoke-intake pipe road.
Fig. 2 is the a-a sectional view of Fig. 1.
Fig. 3 is the connection diagram in reactor and smoke-intake pipe road in prior art.
Fig. 4 is the b-b sectional view of Fig. 3.
1. reactors in figure, 2. smoke-intake pipe road, 3. sash rib, 4. vertical ribbed stiffener, 5. wall panel, the wall panel of 5.1. reactor, the wall panel in 5.2. smoke-intake pipe road, 6. accumulatingdust swash plate, 8. reactor bearing, 9. reactor bearing layer crossbeam, 10. supporting bracket.
Detailed description of the invention
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but they do not form limitation of the invention, only for example.By explanation, advantage of the present invention is become clearly and easy understand simultaneously.
Accompanying drawings is known: the common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system, comprise reactor 1 and smoke-intake pipe road 2, the lower end of reactor 1 is set to reactor bearing 8 by the corresponding prolongation of its vertical ribbed stiffener 4, the lower end of reactor bearing 8 is provided with reactor bearing layer crossbeam 9, reactor 1 is provided with wall panel 5, the vertical ribbed stiffener 3 be connected with wall panel 5, the sash rib 4 be connected with vertical ribbed stiffener 3; Described smoke-intake pipe road 2 is connected with the wall panel 5 of reactor 1.
The upper end of sash rib 4 is provided with accumulatingdust swash plate 6, and the left and right two ends of accumulatingdust swash plate 6 are welded with sash rib 4 and wall panel 5 respectively.
Described smoke-intake pipe road 2 is attached to the side of reactor 1.
Described wall panel 5, vertical two two-phase welding between ribbed stiffener 3 and sash rib 4.
Described vertical ribbed stiffener 3 and sash rib 4 are all arranged on the side of the close reactor 1 of wall panel 5.
In order to can reactor has compared with existing arrangement with the common wall construction in smoke-intake pipe road in explanation flue gas denitrification system of the present invention clearly advantage, these two kinds of technical schemes contrast by staff, and its comparing result is as follows:
As seen from the above table, in flue gas denitrification system of the present invention the common wall construction in reactor and smoke-intake pipe road compared with prior art tool have the following advantages: reduce number of devices and corresponding maintenance cost, reduce steel, insulation and outer casing material usage, reduce the requirement of denitration transformation layout to space, ensure structural safety, corresponding reduction engineering construction, operation and maintenance expense.
Other unspecified part all belongs to prior art.
Claims (1)
1. the common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system, comprises reactor (1) and smoke-intake pipe road (2), it is characterized in that:
Described reactor (1) is also provided with wall panel (5), the vertical ribbed stiffener (3) be connected with wall panel (5), the sash rib (4) be connected with vertical ribbed stiffener (3);
Described vertical ribbed stiffener (3) and sash rib (4) are all arranged on the side of the close reactor (1) of wall panel (5);
Described smoke-intake pipe road (2) is attached to the side of reactor (1), wall panel (5) is the long limit of reactor (1), and described smoke-intake pipe road (2) is connected with the wall panel (5) of reactor (1);
Described wall panel (5), vertical two two-phase welding between ribbed stiffener (3) and sash rib (4);
The upper end of sash rib (4) is provided with accumulatingdust swash plate (6), and the left and right two ends of accumulatingdust swash plate (6) are welded with sash rib (4) and wall panel (5) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084279.1A CN103170244B (en) | 2013-03-15 | 2013-03-15 | The common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310084279.1A CN103170244B (en) | 2013-03-15 | 2013-03-15 | The common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103170244A CN103170244A (en) | 2013-06-26 |
| CN103170244B true CN103170244B (en) | 2015-11-04 |
Family
ID=48630696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310084279.1A Active CN103170244B (en) | 2013-03-15 | 2013-03-15 | The common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103170244B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644572A (en) * | 2013-12-09 | 2014-03-19 | 哈尔滨锅炉厂有限责任公司 | Boiler with SCR bottom guard board strengthening device |
| CN114950124A (en) * | 2021-02-25 | 2022-08-30 | 福建龙净脱硫脱硝工程有限公司 | SCR denitrification facility |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202751937U (en) * | 2012-07-19 | 2013-02-27 | 中国大唐集团环境技术有限公司 | Denitration reaction device |
| CN203170223U (en) * | 2013-03-15 | 2013-09-04 | 武汉龙净环保工程有限公司 | Common wall structure of reactor and flue gas inlet pipeline in flue gas denitration system |
-
2013
- 2013-03-15 CN CN201310084279.1A patent/CN103170244B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202751937U (en) * | 2012-07-19 | 2013-02-27 | 中国大唐集团环境技术有限公司 | Denitration reaction device |
| CN203170223U (en) * | 2013-03-15 | 2013-09-04 | 武汉龙净环保工程有限公司 | Common wall structure of reactor and flue gas inlet pipeline in flue gas denitration system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103170244A (en) | 2013-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204073849U (en) | Coke oven flue gas SCR denitration system | |
| CN103423738B (en) | A kind of compact circulating fluidized bed boiler that uses high sodium coal | |
| CN103363536A (en) | Low temperature electric precipitation system in fuel electric plant | |
| CN203170223U (en) | Common wall structure of reactor and flue gas inlet pipeline in flue gas denitration system | |
| CN103170244B (en) | The common wall construction in reactor and smoke-intake pipe road in flue gas denitrification system | |
| CN210070204U (en) | High-voltage electrode boiler | |
| CN108579360A (en) | A kind of coke oven regenerator UTILIZATION OF VESIDUAL HEAT IN couples method of denitration and device with SNCR/SCR | |
| CN205808179U (en) | A kind of flue gas air heat exchanger for denitration of boiler smoke technique | |
| CN101732989A (en) | Selective catalytic reduction de-nitrification reactor of combined flue | |
| CN202715356U (en) | Low temperature selective catalytic reduction (SCR) static bed flue gas denitration device of horizontal type heat recovery boiler | |
| CN105582794A (en) | Solar energy and geothermal energy assisted CO2 Rankine cycle assisted decarbonization and denitrification system for coal-fired unit | |
| CN105327619A (en) | Low-temperature SCR reactor, smoke low-temperature denitration system, smoke treatment system and smoke treatment method | |
| CN202792064U (en) | Anti-deposition flue system of selective catalytic reduction (SCR) denitration reactor | |
| CN204051431U (en) | A kind of denitrification apparatus | |
| CN204345619U (en) | A kind of burner reducing nitrogen oxide emission | |
| KR20180122113A (en) | A high efficiency, clean and next generation boiler by alternate staged combustion and the combustion method uisng thereof | |
| CN201377786Y (en) | Boiler staged burning device | |
| CN203836997U (en) | Various-contaminant high-efficiency cooperative removing integrated system | |
| CN2892253Y (en) | Flue denitrator setting under boiler coal saver of spraying ammine grid | |
| CN111151131B (en) | Normal-temperature SCR denitration device and technology for improving denitration efficiency of boiler | |
| CN211886246U (en) | Normal-temperature SCR denitration device for improving denitration efficiency of boiler | |
| CN102658025A (en) | Low-temperature SCR (selective catalytic reduction) fixed bed fume denitration device for horizontal waste heat boiler | |
| CN205127744U (en) | CFB boiler denitration demercuration device | |
| CN213334349U (en) | Low-temperature flue gas recirculation system for low-nitrogen combustion of pi-shaped boiler under low load | |
| CN203370463U (en) | Flue gas denitrator of coal fired boiler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |