CN204107347U - The anti-NH of constant temperature 3the SCR method distributing instrument of corrosion - Google Patents
The anti-NH of constant temperature 3the SCR method distributing instrument of corrosion Download PDFInfo
- Publication number
- CN204107347U CN204107347U CN201420611478.3U CN201420611478U CN204107347U CN 204107347 U CN204107347 U CN 204107347U CN 201420611478 U CN201420611478 U CN 201420611478U CN 204107347 U CN204107347 U CN 204107347U
- Authority
- CN
- China
- Prior art keywords
- gas
- communicated
- mass flowmenter
- air inlet
- 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
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses the anti-NH of a kind of constant temperature
3the SCR method distributing instrument of corrosion, comprise the ammonia bottle that is communicated with mixed gas tank by gas pipeline successively and the first mass flowmenter, the nitric oxide gas cylinder that is communicated with mixed gas tank by gas pipeline successively and the second mass flowmenter, the nitrogen cylinder be communicated with mixed gas tank by gas pipeline successively and the 3rd mass flowmenter, it is characterized in that: it also comprises ceramic filter, the air inlet of ceramic filter is communicated with by the gas outlet of gas pipeline with ammonia bottle, and the gas outlet of ceramic filter is communicated with by gas pipeline with the air inlet of the first mass flowmenter.The utility model uses anti-NH in the simulated experiment of SCR industrial tail gas
3the use for laboratory distributing instrument of gas attack, improves the blockage problem of mass flowmenter and improves service life of mass flowmenter; The high-temperature flue gas of industry can be simulated, make flue gas constant under uniform temperature condition, avoid NH
3the instability of the fluctuation that gas bypass flow controls and catalytic reduction reaction.
Description
Technical field
The utility model relates to industrial waste gas and administers field, refers to the anti-NH of a kind of constant temperature particularly
3the SCR method distributing instrument of corrosion.
Background technology
In industry, the discharge of nitrogen oxide can cause ill effect to environment, be mainly manifested in the following aspects: the pollution of nitrogen oxide self, ozone pollution, acid deposition, Particulate Pollution, eutrophication problem, nitrogen oxide is as primary pollution, when the content is higher can serious harm health, compare SO
2larger to the harm of human body, when human body occurs that nitrogen is poisoning, except can breathing problem be caused, more there will be methemoglobinemia and nervous centralis infringement symptom.In addition, nitrogen oxide also can produce multiple secondary pollution, and it is one of important substance generating ozone, be closely related with ozone concentration and photochemical pollution, nitrogen oxide also can cause the acidifying of soil, more can cause the eutrophication of water body, have a strong impact on the ecosystem unbalance.
70% is had from the direct burning of coal in China's discharged nitrous oxides, great impact is brought on environment, firepower electrical plant, cement plant are discharged nitrous oxides rich anies influential family, in country under the formulation of industrial air pollution thing discharge standard, coal-burning power plant is very urgent with cement plant denitration, in numerous method, and selective catalytic reduction (Selective Catalytic Reduction, SCR) be modal method of denitration, utilize NH
3by NO and NO under catalysts conditions
2be reduced into N
2, reach the object of nitrogen oxide in industrial exhaust gas.
In recent years, along with the deep progress of research, SCR method reaction temperature is also reduced to 150 DEG C by more than initial 200 DEG C, but labs is in the research of SCR, when in air, humidity is larger, As time goes on, and NH
3annoying researcher to the etching problem of air distribution system, etching problem not only affects smoke modelling always, more causes de-stabilising effect to catalytic reaction; In the process of simulated flue gas in addition, existing distributing instrument does not have heating function, gas just enters in the catalyst reaction device of tube furnace after mixing, and the gas of normal temperature heats the reduction that can not reach industrial smoke condition in tube furnace, more brings certain interference to experimental result.
Summary of the invention
The purpose of this utility model will provide a kind of constant temperature anti-NH exactly
3the SCR method distributing instrument of corrosion.
For achieving the above object, the anti-NH of the constant temperature designed by the utility model
3the SCR method distributing instrument of corrosion, comprise the ammonia bottle and the first mass flowmenter that are communicated with mixed gas tank by gas pipeline successively, the nitric oxide gas cylinder be communicated with mixed gas tank by gas pipeline successively and the second mass flowmenter, the nitrogen cylinder be communicated with mixed gas tank by gas pipeline successively and the 3rd mass flowmenter, its special character is: it also comprises ceramic filter, the air inlet of described ceramic filter is communicated with by the gas outlet of gas pipeline with ammonia bottle, the gas outlet of described ceramic filter is communicated with by gas pipeline with the air inlet of the first mass flowmenter, dust granule in adsorbable unstrpped gas plays purification unstrpped gas and reduces the effect in the long-pending region of moisture richness.
Further, it also comprises ceramic membrane, the air inlet of described ceramic membrane is communicated with the gas outlet of ceramic filter by gas pipeline, and the gas outlet of described ceramic membrane is communicated with by the air inlet of gas pipeline with the first mass flowmenter, utilizes film two ends moisture concentration difference to absorb moisture.
Further, calcium chloride tube is provided with between described ceramic membrane and the first mass flowmenter, the air inlet of described calcium chloride tube is communicated with by gas pipeline with the gas outlet of ceramic membrane, the gas outlet of described calcium chloride tube is communicated with by gas pipeline with the air inlet of the first mass flowmenter, absorbs moisture further.
Further, described first mass flowmenter is provided with PVC sealing ring, can effectively prevent the first mass flowmenter to be corroded.
Again further, described mixed gas tank inwall is provided with infrared heating pipe, can maintain reaction temperature at 150 DEG C.
Further, also calcium chloride tube is provided with between described nitric oxide gas cylinder and the second mass flowmenter, the air inlet of described calcium chloride tube is communicated with by gas pipeline with the gas outlet of nitric oxide gas cylinder, and the gas outlet of described calcium chloride tube is communicated with by gas pipeline with the air inlet of the second mass flowmenter.
The utility model has the advantage of: the pipeline between ammonia bottle and the first mass flowmenter installs ceramic filter, the dust granule in adsorbable unstrpped gas plays purification unstrpped gas and reduces the effect in the long-pending region of moisture richness; Be provided with ceramic membrane between ceramic filter and the first mass flowmenter, utilize film two ends moisture concentration difference to absorb moisture; Between ceramic membrane and the first mass flowmenter and be equipped with calcium chloride tube between nitric oxide gas cylinder and the second mass flowmenter and absorb moisture further; First mass flowmenter is provided with PVC sealing ring, can effectively prevent the first mass flowmenter to be corroded; Mixed gas tank inwall is provided with infrared heating pipe, can maintain reaction temperature at 150 DEG C, can simulate the high-temperature flue gas of industry, make flue gas constant under uniform temperature condition, avoid NH
3the instability of the fluctuation that gas bypass flow controls and catalytic reduction reaction; Its structure is simple, and low cost of manufacture is easy to use, is easy to promote.
Accompanying drawing explanation
Fig. 1 is the anti-NH of a kind of constant temperature
3the structural representation of the SCR method distributing instrument of corrosion.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
The anti-NH of constant temperature shown in figure
3the SCR method distributing instrument of corrosion, comprise the ammonia bottle 2 and the first mass flowmenter 3 that are communicated with mixed gas tank 1 by gas pipeline successively, the nitric oxide gas cylinder 4 be communicated with mixed gas tank 1 by gas pipeline successively and the second mass flowmenter 5, the nitrogen cylinder 4 be communicated with mixed gas tank 1 by gas pipeline successively and the 3rd mass flowmenter 5, it also comprises ceramic filter 6, the air inlet of ceramic filter 6 is communicated with by the gas outlet of gas pipeline with ammonia bottle 2, the gas outlet of ceramic filter 6 is communicated with by gas pipeline with the air inlet of the first mass flowmenter 3, it also comprises ceramic membrane 7, the air inlet of ceramic membrane 7 is communicated with by the gas outlet of gas pipeline with ceramic filter 6, the gas outlet of ceramic membrane 7 is communicated with by the air inlet of gas pipeline with the first mass flowmenter 3, calcium chloride tube 8 is provided with between ceramic membrane 7 and the first mass flowmenter 3, the air inlet of calcium chloride tube 8 is communicated with by gas pipeline with the gas outlet of ceramic membrane 7, the gas outlet of calcium chloride tube 8 is communicated with by gas pipeline with the air inlet of the first mass flowmenter 3, first mass flowmenter 3 is provided with PVC sealing ring 9, mixed gas tank 1 inwall is provided with infrared heating pipe 10, also calcium chloride tube 8 is provided with between nitric oxide gas cylinder 4 and the second mass flowmenter 5, the air inlet of calcium chloride tube 8 is communicated with by gas pipeline with the gas outlet of nitric oxide gas cylinder 4, the gas outlet of calcium chloride tube 8 is communicated with by gas pipeline with the air inlet of the second mass flowmenter 5.
During use, ammonia bottle 2 is opened, keep gas cylinder pressure-reducing valve Stress control at 0.3Mpa, at NH
3when gas is by ceramic filter 6, guarantee that gas pipeline has no abnormal sound, ceramic filter 6 uses adapter to be connected on gas cylinder pressure-reducing valve and gas pipeline, and ensure that interval is cleaned ceramic filter 6 for three months, ceramic membrane 7 is arranged between ceramic filter 6 and the first mass flowmenter 3, works as NH
3when gas is by ceramic membrane 7, the moment observes NH
3atmospheric pressure, when occurring that pressure-reducing valve pressure increases more than 20% instantaneously, rapid closedown pressure-reducing valve, prevent too high gas pressure from rushing broken by ceramic membrane 7, calcium chloride tube 8 is sealed in metal tube, is then connected on gas transmission official road by adapter, and the middle raw material band that uses seals, guarantee that calcium chloride tube 8, NH is changed in three months in interval
3infrared heating pipe 10 in mixed gas tank 1, by after calcium chloride tube 8, before gas starts to enter mixed gas tank 1, is opened, and its temperature is maintained in 140 ~ 150 DEG C of interval ranges by gas, when occurring abnormal when heating, stops experiment; And after each test, when other gas branch roads stop supplied gas, keep warming-up device to run more than one hour, avoid equipment absorption water in air vapour and residual ammonia to be formed, alkaline solution etching apparatus.During each service property (quality) flowmeter, guarantee that mass flow counts back to zero, and ensure at NH
3gas is by mass flow timing, and mass flow counts and keeps stable, and supreme lower fluctuation and drift phenomenon occur.
Claims (8)
1. the anti-NH of constant temperature
3the SCR method distributing instrument of corrosion, comprise the ammonia bottle (2) and the first mass flowmenter (3) that are communicated with mixed gas tank (1) by gas pipeline successively, the nitric oxide gas cylinder (4) be communicated with mixed gas tank (1) by gas pipeline successively and the second mass flowmenter (5), the nitrogen cylinder (11) be communicated with mixed gas tank (1) by gas pipeline successively and the 3rd mass flowmenter (12), it is characterized in that: it also comprises ceramic filter (6), the air inlet of described ceramic filter (6) is communicated with by the gas outlet of gas pipeline with ammonia bottle (2), the gas outlet of described ceramic filter (6) is communicated with by gas pipeline with the air inlet of the first mass flowmenter (3).
2. the anti-NH of constant temperature according to claim 1
3the SCR method distributing instrument of corrosion, it is characterized in that: it also comprises ceramic membrane (7), the air inlet of described ceramic membrane (7) is communicated with by the gas outlet of gas pipeline with ceramic filter (6), and the gas outlet of described ceramic membrane (7) is communicated with by the air inlet of gas pipeline with the first mass flowmenter (3).
3. the anti-NH of constant temperature according to claim 2
3the SCR method distributing instrument of corrosion, it is characterized in that: between described ceramic membrane (7) and the first mass flowmenter (3), be provided with calcium chloride tube (8), the air inlet of described calcium chloride tube (8) is communicated with by gas pipeline with the gas outlet of ceramic membrane (7), and the gas outlet of described calcium chloride tube (8) is communicated with by gas pipeline with the air inlet of the first mass flowmenter (3).
4. the anti-NH of constant temperature according to any one of claim 1-3
3the SCR method distributing instrument of corrosion, is characterized in that: described first mass flowmenter (3) is provided with PVC sealing ring (9).
5. the anti-NH of constant temperature according to claim 4
3the SCR method distributing instrument of corrosion, is characterized in that: described mixed gas tank (1) inwall is provided with infrared heating pipe (10).
6. the anti-NH of constant temperature according to any one of claim 1-3
3the SCR method distributing instrument of corrosion, it is characterized in that: between described nitric oxide gas cylinder (4) and the second mass flowmenter (5), be also provided with calcium chloride tube (8), the air inlet of described calcium chloride tube (8) is communicated with by gas pipeline with the gas outlet of nitric oxide gas cylinder (4), and the gas outlet of described calcium chloride tube (8) is communicated with by gas pipeline with the air inlet of the second mass flowmenter (5).
7. the anti-NH of constant temperature according to claim 4
3the SCR method distributing instrument of corrosion, it is characterized in that: between described nitric oxide gas cylinder (4) and the second mass flowmenter (5), be also provided with calcium chloride tube (8), the air inlet of described calcium chloride tube (8) is communicated with by gas pipeline with the gas outlet of nitric oxide gas cylinder (4), and the gas outlet of described calcium chloride tube (8) is communicated with by gas pipeline with the air inlet of the second mass flowmenter (5).
8. the anti-NH of constant temperature according to claim 5
3the SCR method distributing instrument of corrosion, it is characterized in that: between described nitric oxide gas cylinder (4) and the second mass flowmenter (5), be also provided with calcium chloride tube (8), the air inlet of described calcium chloride tube (8) is communicated with by gas pipeline with the gas outlet of nitric oxide gas cylinder (4), and the gas outlet of described calcium chloride tube (8) is communicated with by gas pipeline with the air inlet of the second mass flowmenter (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611478.3U CN204107347U (en) | 2014-10-21 | 2014-10-21 | The anti-NH of constant temperature 3the SCR method distributing instrument of corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611478.3U CN204107347U (en) | 2014-10-21 | 2014-10-21 | The anti-NH of constant temperature 3the SCR method distributing instrument of corrosion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204107347U true CN204107347U (en) | 2015-01-21 |
Family
ID=52324709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420611478.3U Expired - Fee Related CN204107347U (en) | 2014-10-21 | 2014-10-21 | The anti-NH of constant temperature 3the SCR method distributing instrument of corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204107347U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268493A (en) * | 2016-08-19 | 2017-01-04 | 北京艾立特科技有限公司 | A kind of liquid dynamic air-distributing device and air distributing method thereof |
| CN106861581A (en) * | 2017-02-24 | 2017-06-20 | 南通大学 | Device for reclaiming nitrogen in aluminium lime-ash |
| CN114149903A (en) * | 2021-12-03 | 2022-03-08 | 北京首钢朗泽科技股份有限公司 | Recovery device and recovery method for freeze-dried clostridium ethanolicum strains |
-
2014
- 2014-10-21 CN CN201420611478.3U patent/CN204107347U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106268493A (en) * | 2016-08-19 | 2017-01-04 | 北京艾立特科技有限公司 | A kind of liquid dynamic air-distributing device and air distributing method thereof |
| CN106861581A (en) * | 2017-02-24 | 2017-06-20 | 南通大学 | Device for reclaiming nitrogen in aluminium lime-ash |
| CN106861581B (en) * | 2017-02-24 | 2020-01-31 | 南通大学 | Device for recovering nitrogen element in aluminum ash |
| CN114149903A (en) * | 2021-12-03 | 2022-03-08 | 北京首钢朗泽科技股份有限公司 | Recovery device and recovery method for freeze-dried clostridium ethanolicum strains |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102436270B (en) | Flue gas denitration apparatus and control method used by flue gas denitration apparatus | |
| CN103926370B (en) | The device and method of the denitration of a kind of association evaluation catalyzer and demercuration performance | |
| CN103877856B (en) | A kind of method of coke oven flue waste gas heat utilization and purification | |
| CN207654927U (en) | A kind of coke oven flue gas desulfurization and dedusting denitration coprocessing system | |
| CN204107347U (en) | The anti-NH of constant temperature 3the SCR method distributing instrument of corrosion | |
| CN107789967B (en) | Sintering flue gas low-temperature denitration device and implementation method thereof | |
| CN205032070U (en) | Desulfurization dust removal denitration integrated device | |
| CN104759205B (en) | A kind of high temperature air channel Benitration reactor and the method with its denitration | |
| CN112403232A (en) | Process method and device for cooperatively purifying multiple pollutants in flue gas | |
| CN203764137U (en) | Adsorption desulfurization and denitration device | |
| CN104399370A (en) | Lower temperature flue gas SCR (Selective Catalytic Reduction) denitration system and process | |
| CN206424791U (en) | A kind of device of desulfurization and dedusting denitration for low-temperature flue gas | |
| CN104360007A (en) | Novel SCR catalyst testing device | |
| CN110026082A (en) | A kind of ozone injects the kiln gas denitrification apparatus and method of auxiliary SCR before ammonia | |
| CN204438823U (en) | A kind of flue gases of cock oven denitration desulfurization UTILIZATION OF VESIDUAL HEAT IN integrated apparatus | |
| CN203803353U (en) | Simulation testing device for co-processing multiple pollutants by adopting active coke process | |
| CN205308135U (en) | Can realize series connection, SOx/NOx control system that connects in parallel | |
| CN204563937U (en) | A kind of low-temperature smoke air SCR denitrating system | |
| CN211753781U (en) | Smoke multi-pollutant cooperative purification device | |
| CN204865547U (en) | A control system for flue gas denitration of power plant | |
| CN210090398U (en) | Denitration catalyst capability test device | |
| CN203990299U (en) | Gas protection desulfurizer | |
| CN204170620U (en) | A kind of desulfurization and denitrification integral flue gas purification system | |
| CN210473547U (en) | Gas boiler removes CO and takes off NOx integration purifier | |
| CN203672863U (en) | Device for evaluating flue gas denitration catalyst activity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170727 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| 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: 20150121 Termination date: 20201021 |