CN201988343U - Ammonia gas and air Venturi mixer - Google Patents
Ammonia gas and air Venturi mixer Download PDFInfo
- Publication number
- CN201988343U CN201988343U CN2011200674650U CN201120067465U CN201988343U CN 201988343 U CN201988343 U CN 201988343U CN 2011200674650 U CN2011200674650 U CN 2011200674650U CN 201120067465 U CN201120067465 U CN 201120067465U CN 201988343 U CN201988343 U CN 201988343U
- Authority
- CN
- China
- Prior art keywords
- air
- nozzle
- venturi
- venturi tube
- gas pipeline
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
An ammonia gas and air Venturi mixer is characterized in that a cylinder is connected with a Venturi tube, an ejected gas pipeline is arranged in the cylinder, and a nozzle is arranged at the position of an inlet of the Venturi tube and mounted at the tail end of the ejected gas pipeline above the nozzle. The operating principle of the ammonia gas and air Venturi mixer includes that ejected gas is ejected from the nozzle of the mixer at certain pressure, air is taken in a mixing tube from a side opening pipe of the cylinder, and the ejected gas and the air are completely mixed in the Venturi tube with pressure loss lower than 5mbar, so that evenly-mixed gas with certain proportional pressure is obtained. By utilizing the medium-pressure ammonia gas to eject the low-pressure air, 3%-15% gas is ejected and mixed gas outlet pressure is basically equivalent to the air inlet pressure, so that the requirement of coal-fired power plant for denitration is met. Adaption of the nozzle and the Venturi tube is the key of the design, and changing the position of the nozzle in the Venturi is an effective way to decrease pressure loss.
Description
Technical field
The utility model belongs to the part device of coal-fired station, particularly a kind of ammonia, air venturi mixer.
Background technology
In recent years, along with China's rapid economy development, the sustainable growth of raw coal consumption figure, particularly electricity consumption increase bigger, and the main supply of electric power of China is coal-fired thermal power generation, in the coal burning process, has produced a large amount of oxynitrides, general designation NO
X, oxynitrides is the major pollutants that cause optical haze and acid rain, and NO
XDischarge capacity increases year by year, is seriously restricting our development of economic construction, and the combustion product gases denitration is exactly an oxynitrides of deviating from flue gas China, is control NO
XThe main means of discharging also are the reduction of discharging requirements of Environmental Protection in China policy, and meet the requirement of the strategy of sustainable development.
In numerous denitrating techniques, SCR (Selective Catalytic Reduction, write a Chinese character in simplified form SCR) be most effective, it also is the most ripe a kind of method of technology and technology, the achievement of successfully using is arranged in developed country, the SCR technology mainly is based under the effect of metallic catalyst, utilizes reducing agent the NO in the flue gas
xBe reduced into N
2And H
2O.So to the SCR system, the selection of reducing agent is very crucial specification requirement, the most frequently used reducing agent is anhydrous liquid ammonia (NH in numerous reducing agents
3), hereinafter to be referred as liquefied ammonia.
Liquefied ammonia is important denitration raw material as the SCR denitrating system of reducing agent.Denitration is one of key component of SCR denitrating system with ammonia, air mixer, the stability that its design is produced, low-cost with and industrialized scale all directly restricting the stability and the high efficiency of combustion product gases denitrating system.
Present ammonia, air mixer majority are static mixer, and its pressure loss is generally very big, and mixture homogeneity is also poor, and at demand, my company has carried out valuable research and design to theory and application that ammonia, air venturi mix.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of ammonia, air venturi mixer are provided.Can utilize elevated pressures ammonia injection low-pressure air, the mixture homogeneity with 98% and the pressure loss that is lower than 5mbar are mixed, and mix the back and directly import pipe network, do not need other energy, reach the energy savings purpose.
The technical solution of the utility model is:
A kind of ammonia, air venturi mixer is characterized in that: cylindrical shell connects Venturi tube, and the injection gas pipeline is arranged in cylindrical shell, and import department is provided with nozzle in Venturi tube, and nozzle is contained in the end of the injection gas pipeline of top.
There is outlet(discharge) flange on described Venturi tube right side, and the left side inlet of described cylindrical shell has inlet flange.
There is adpting flange in described Venturi tube left side, there is adpting flange on the right side of described cylindrical shell, the adpting flange in Venturi tube left side and the adpting flange on cylindrical shell right side are connected, and have located teflon gasket between the adpting flange in Venturi tube left side and the adpting flange on cylindrical shell right side.
The parallelpiped of described injection gas pipeline is contained on the cylindrical shell central axial line, and the vertical pipe of injection gas pipeline passes cylinder lateral wall, passes the outer injection gas pipeline end of cylinder lateral wall and is provided with injection gas pipeline end flange.
Described nozzle is fixed on the end of injection gas pipeline by locknut.
Ammonia, air venturi mixer are to connect Venturi tube by cylindrical shell, and the Venturi tube upper inlet place in the cylindrical shell is provided with nozzle, the end of the parallelpiped of the injection gas pipeline above nozzle is contained in.
The utility model effect is:
Press ammonia injection low-pressure air in the utilization by a large amount of experiment showed,,, mix the inlet pressure that the gas outlet pressure equals air substantially by injection gas 3%～15%.Meet the out of stock demand of coal-fired station.The adaptive of nozzle and Venturi tube is the key component of design.Changing nozzle in the position of venturi, is to reduce pressure loss effective way.The combined amount of this ammonia, air venturi mixer can reach 15000Nm
3/ h.
Description of drawings
Fig. 1 is ammonia, air venturi mixer structural representation
Parts title among the figure
1 air intake flange, 2 ammonia inlet flanges, 3 cylindrical shells, 4 teflon gaskets, 5 injection gas pipelines, 6 locknuts, 7 nozzles, 8 Venturi tubes, 9 mixed gas outlets
The specific embodiment
As a kind of ammonia of Fig. 1, air venturi mixer, it is characterized in that: cylindrical shell connects Venturi tube, and the injection gas pipeline is arranged in cylindrical shell, and import department is provided with nozzle in Venturi tube, and nozzle is contained in the end of the injection gas pipeline of top.
There is outlet(discharge) flange on described Venturi tube right side, and the left side inlet of described cylindrical shell has inlet flange.
There is adpting flange in described Venturi tube left side, there is adpting flange on the right side of described cylindrical shell, the adpting flange in Venturi tube left side and the adpting flange on cylindrical shell right side are connected, and have located teflon gasket between the adpting flange in Venturi tube left side and the adpting flange on cylindrical shell right side.
The parallelpiped of described injection gas pipeline is contained on the cylindrical shell central axial line, and the vertical pipe of injection gas pipeline passes cylinder lateral wall, passes the outer injection gas pipeline end of cylinder lateral wall and is provided with injection gas pipeline end flange.
Described nozzle is fixed on the end of injection gas pipeline by locknut.
Ammonia, air venturi mixer are to connect Venturi tube by cylindrical shell, and the Venturi tube upper inlet place in the cylindrical shell is provided with nozzle, the end of the parallelpiped of the injection gas pipeline above nozzle is contained in.
Claims (5)
1. an ammonia, air venturi mixer, it is characterized in that: cylindrical shell connects Venturi tube, and the injection gas pipeline is arranged in cylindrical shell, and import department is provided with nozzle in Venturi tube, and nozzle is contained in the end of the injection gas pipeline of top.
2. ammonia according to claim 1, air venturi mixer is characterized in that: there is outlet(discharge) flange on described Venturi tube right side, and the left side inlet of described cylindrical shell has inlet flange.
3. ammonia according to claim 1, air venturi mixer, it is characterized in that: there is adpting flange in described Venturi tube left side, there is adpting flange on the right side of described cylindrical shell, the adpting flange in Venturi tube left side and the adpting flange on cylindrical shell right side are connected, and have located teflon gasket between the adpting flange in Venturi tube left side and the adpting flange on cylindrical shell right side.
4. ammonia according to claim 1, air venturi mixer, it is characterized in that: the parallelpiped of described injection gas pipeline is contained on the cylindrical shell central axial line, the vertical pipe of injection gas pipeline passes cylinder lateral wall, passes the outer injection gas pipeline end of cylinder lateral wall and is provided with injection gas pipeline end flange.
5. ammonia according to claim 1, air venturi mixer is characterized in that: described nozzle is fixed on the end of the parallelpiped of injection gas pipeline by locknut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200674650U CN201988343U (en) | 2011-03-15 | 2011-03-15 | Ammonia gas and air Venturi mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200674650U CN201988343U (en) | 2011-03-15 | 2011-03-15 | Ammonia gas and air Venturi mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201988343U true CN201988343U (en) | 2011-09-28 |
Family
ID=44664848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200674650U Expired - Fee Related CN201988343U (en) | 2011-03-15 | 2011-03-15 | Ammonia gas and air Venturi mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201988343U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631850A (en) * | 2012-05-07 | 2012-08-15 | 三明中环科经贸有限公司 | Gas mixer |
| CN102908920A (en) * | 2012-11-08 | 2013-02-06 | 中国华电工程(集团)有限公司 | Ammonia and air mixer for denitrification device |
| CN103028333A (en) * | 2012-12-04 | 2013-04-10 | 北京中卓时代消防装备科技有限公司 | High-efficient foaming device for compressed air A-type foams |
| CN103033379A (en) * | 2012-12-10 | 2013-04-10 | 中国船舶重工集团公司第七一一研究所 | Particle load mixing device |
| CN105289348A (en) * | 2015-11-16 | 2016-02-03 | 国电科学技术研究院 | Venturi tube type ammonia mixer |
| CN105879732A (en) * | 2016-06-16 | 2016-08-24 | 无锡市翱宇特新科技发展有限公司 | Chemical-fluid mixing device |
| CN106377985A (en) * | 2016-10-28 | 2017-02-08 | 山西北极熊环境科技有限公司 | Gas-gas mixing aspirator |
| CN107024504A (en) * | 2017-03-27 | 2017-08-08 | 华侨大学 | A kind of combustible gas lower flammability limit under Plasma Assisted Combustion widens test device and method of testing |
| CN107763626A (en) * | 2017-11-17 | 2018-03-06 | 厦门大学 | Ammonia fuel mixer |
| CN108412468A (en) * | 2018-04-27 | 2018-08-17 | 四川宏华石油设备有限公司 | A kind of gas hydrate exploitation device |
| CN109499414A (en) * | 2019-01-14 | 2019-03-22 | 西安交通大学 | A kind of venturi mixer being more fully mixed fluid |
-
2011
- 2011-03-15 CN CN2011200674650U patent/CN201988343U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631850A (en) * | 2012-05-07 | 2012-08-15 | 三明中环科经贸有限公司 | Gas mixer |
| CN102631850B (en) * | 2012-05-07 | 2014-03-26 | 三明中环科经贸有限公司 | Gas mixer |
| CN102908920A (en) * | 2012-11-08 | 2013-02-06 | 中国华电工程(集团)有限公司 | Ammonia and air mixer for denitrification device |
| CN102908920B (en) * | 2012-11-08 | 2015-07-22 | 中国华电工程(集团)有限公司 | Ammonia and air mixer for denitrification device |
| CN103028333A (en) * | 2012-12-04 | 2013-04-10 | 北京中卓时代消防装备科技有限公司 | High-efficient foaming device for compressed air A-type foams |
| CN103028333B (en) * | 2012-12-04 | 2014-10-15 | 北京中卓时代消防装备科技有限公司 | Foaming device for compressed air A-type foams |
| CN103033379A (en) * | 2012-12-10 | 2013-04-10 | 中国船舶重工集团公司第七一一研究所 | Particle load mixing device |
| CN105289348A (en) * | 2015-11-16 | 2016-02-03 | 国电科学技术研究院 | Venturi tube type ammonia mixer |
| CN105879732A (en) * | 2016-06-16 | 2016-08-24 | 无锡市翱宇特新科技发展有限公司 | Chemical-fluid mixing device |
| CN106377985A (en) * | 2016-10-28 | 2017-02-08 | 山西北极熊环境科技有限公司 | Gas-gas mixing aspirator |
| WO2018077127A1 (en) * | 2016-10-28 | 2018-05-03 | 山西北极熊环境科技有限公司 | Gas-gas mixed aspirator |
| CN107024504A (en) * | 2017-03-27 | 2017-08-08 | 华侨大学 | A kind of combustible gas lower flammability limit under Plasma Assisted Combustion widens test device and method of testing |
| CN107763626A (en) * | 2017-11-17 | 2018-03-06 | 厦门大学 | Ammonia fuel mixer |
| CN107763626B (en) * | 2017-11-17 | 2023-12-01 | 厦门大学 | Ammonia fuel mixing device |
| CN108412468A (en) * | 2018-04-27 | 2018-08-17 | 四川宏华石油设备有限公司 | A kind of gas hydrate exploitation device |
| CN109499414A (en) * | 2019-01-14 | 2019-03-22 | 西安交通大学 | A kind of venturi mixer being more fully mixed fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201988343U (en) | Ammonia gas and air Venturi mixer | |
| CN101637700B (en) | SCR denitrification process and denitrification device of ammonia injection grid adopting non-unidiameter injection orifices | |
| CN205199283U (en) | Tail gas recovery unit in water -reducing agent production system | |
| CN202538621U (en) | Ammonia water gasification device for fume selective catalytic reduction (SCR) denitration process | |
| CN202924978U (en) | Methane purifying and generation control device | |
| CN202527072U (en) | Selective catalytic reduction (SCR) smoke denitration device based on urea solutions or ammonia water | |
| CN113426296A (en) | Energy-saving urea hydrolysis ammonia preparation denitrification facility based on combustion engine SCR denitration | |
| CN202893175U (en) | Flue gas desulfurization and denitrification integrated device of sintering machine | |
| CN204073818U (en) | A kind of ozone liquid phase oxidation simultaneous SO_2 and NO removal system | |
| CN202376899U (en) | Double-inlet flue desulfurization device | |
| CN210674761U (en) | Flue tail gas desulfurization and denitrification integrated device | |
| CN201454390U (en) | SCR denitrifying device adopting ammonia injection grid with injection orifices of unequal diameters | |
| CN207680333U (en) | Urea direct-injection SNCR+SCR flue gas denitrification systems | |
| CN216395900U (en) | Energy-saving urea hydrolysis ammonia preparation denitrification facility based on combustion engine SCR denitration | |
| CN201990481U (en) | Concentration device for dilute hydrochloric acid | |
| CN201802462U (en) | Exhaust residual-heat utilization device of gas generator set | |
| CN212548908U (en) | Tail gas absorption device for methylamine production process | |
| CN202136918U (en) | Desulfurizer | |
| CN103089385A (en) | Tail-gas strong-ionization and purifying gas production assisted zero-emission energy saving machine master device | |
| CN208627000U (en) | A kind of spray desulfurizing tower with multistep treatment for smoke gas treatment | |
| CN103801173B (en) | The processing method of NOx waste gas in a kind of copper zinc catalyst preparation technology | |
| CN202527070U (en) | Direct flue gas pyrolysis urea solution ammonia preparing device for flue gas denitrification | |
| CN208347874U (en) | Distributed energy tail gas clean-up DeNOx system urea meter-mixer | |
| CN201433944Y (en) | Steam absorption pressure equalizer | |
| CN205340552U (en) | Device of reinforcing flue gas desulfurization effect |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20160315 |