CN104624015A - Denitration test device for tunnels or metros - Google Patents
Denitration test device for tunnels or metros Download PDFInfo
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- CN104624015A CN104624015A CN201510043985.0A CN201510043985A CN104624015A CN 104624015 A CN104624015 A CN 104624015A CN 201510043985 A CN201510043985 A CN 201510043985A CN 104624015 A CN104624015 A CN 104624015A
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- denitration
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- active carbon
- fan
- test device
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- Treating Waste Gases (AREA)
Abstract
The invention provides a denitration test device for tunnels or metros. The denitration test device comprises a denitration section and a fan section which are connected with each other, wherein an activated carbon wall is arranged at the middle part of the denitration section, and shunting plates are both arranged in an inlet and an outlet of the denitration section; a fan is arranged in the fan section; and the inlet of the denitration section is a pollutant gas inlet, and the outlet of the fan section is a clean gas outlet. Pollutant gas firstly flows through the shunting plate arranged at the front end of the denitration section, the shunting plate shunts the inflowing gas to ensure that gas flow arrives at each wall surface of the activated carbon wall uniformly, the pollutant gas then flows through the shunting plate arranged at the rear end of the denitration section under the purification action of the activated carbon wall, and finally clean gas flows out from the outlet under the pumping action of the fan in the fan section; and the activated carbon wall can be subjected to regeneration treatment after reaching adsorption saturation for repeated use. By adopting the device provided by the invention, the defects of the prior art can be overcome, an activate carbon denitration technology and a physical adsorption method are adopted, chemical reaction cannot be caused, and safe operation and high adsorption efficiency can be achieved.
Description
Technical field
The present invention relates to a kind of tunnel or subway active carbon denitration (DeNOx) experimental rig, belong to tunnel or subway air purification techniques field.
Background technology
Along with developing rapidly of national economy, the quantity of motor vehicle is also increasing sharply, and conveniently people's trip, the quantity in highway and tunnel is also in continuous increase.For major long tunnel, when drawing badly, automobile, the diesel vehicle pollution gas that imperfect combustion can produce high concentration in the process of moving will be accumulated, thus impact trip personal security is healthy.Pollution gas mainly comprises particle PM, carbon monoxide CO, nitrogen oxide NO
x, hydrocarbon HC, sulfur dioxide SO
2deng, wherein with carbon monoxide CO, nitrogen oxide NO
xmaximum to the harm of human body, majority of case is diluted to the required airflow not harming health.
NO
xcomprise multiple compounds, comprise NO, NO
2, N
2o
3, N
2o
5deng, NO
2be the gas that a kind of toxicity is very strong, irritant smell, in bronzing.As the NO in air
2content will be strong when reaching 5/1000000ths stink, have very strong harm to the respiratory immune function of people.
At present, the domestic research to nitrogen oxide is mainly placed in thermal power plant, boiler factory and atmospheric environment, and in existing technology, comprising application number is 201210474672.7, cement kiln flue gas high-temperature dust removal SCR denitration device by name; Application number is 201010270931.5, a kind of desulfurization nitrogen oxide composite type metallic oxide SCR catalyst by name and preparation method thereof; Application number 200910051165.0, denitrifying catalyst with selective catalytic reduction and preparation method etc. by name.Above-mentioned patent all adopts catalyst reduction method of denitration, relates to redox reaction, and reaction temperature is high, is not suitable for tunnel or metro operation environment.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of denitrification test device be applicable in tunnel or subway air cleaning system, to remove the nitrogen oxide in car exhaust gas, reduces the harmfulness of nitrogen oxide to driving personal security.
In order to solve the problems of the technologies described above, technical scheme of the present invention is to provide a kind of tunnel or subway denitrification test device, it is characterized in that: comprise the denitration section and fan section that are connected to each other, be provided with active carbon wall in the middle part of denitration section, denitration section import and export is equipped with flow distribution plate; Blower fan is provided with in fan section; Denitration section entrance is pollution gas entrance, and fan section outlet is clean air outlet.
Preferably, described flow distribution plate is vertically fixed in denitration section along airflow direction, and between each flow distribution plate, spacing is equal.
Preferably, described active carbon wall is piled into " W " shape by active carbon bag.
Preferably, the angle between each face wall of the active carbon wall of described " W " shape is 30 ° ~ 45 °.
Preferably, the holdup time of pollution gas in described active carbon wall is the shortest is 1s.
When denitrification test device provided by the invention uses, the pollution gas that pollution sources produce enters denitration section entrance, and flow through the flow distribution plate of denitration section front end, Incoming gas is shunted by flow distribution plate, arrives each metope of active carbon wall with making uniform stream; Active carbon wall is piled up by several active carbon bags and is formed, and shape is " W " shape, utilizes the feature that active carbon specific area is large and absorption property is good, the nitrogen oxide in removing vehicle exhaust; Pollution gas through the catharsis of active carbon wall, then flows through the flow distribution plate of denitration section rear end, flows out under the swabbing action of the blower fan of last clean air in fan section through outlet.Active carbon wall reach absorption saturated after, carry out regeneration process, reuse.
Device provided by the invention overcomes the deficiencies in the prior art, adopts active carbon denitration technology and physical adsorption process, chemical reaction does not occur, security of operation, utilize the nitrogen oxide in the physical absorption principle adsorption fouling gas of active carbon, ensure the spatter property of exit gas, adsorption efficiency is high.
Accompanying drawing explanation
Fig. 1 is tunnel provided by the invention or subway denitrification test device top view;
Fig. 2 is flow distribution plate position view;
Fig. 3 is active carbon wall schematic diagram.
Detailed description of the invention
For making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is tunnel provided by the invention or subway denitrification test device top view, described tunnel or subway denitrification test device comprise the denitration section 2 and fan section 5 that are connected to each other, flow distribution plate 3 and active carbon wall 4 is provided with in denitration section 2, the middle part of denitration section 2 is located at by active carbon wall 4, be equipped with flow distribution plate 3 in the both sides, front and back of active carbon wall 4, lay respectively at the import and export place of denitration section 2.Be provided with blower fan in fan section 5, to provide power, make device be in negative pressure state, preventing pollution gas is excessive.Denitration section 2 entrance is pollution gas entrance, and fan section 5 outlet is clean air outlet.
The pollution gas that pollution sources 1 produce enters denitration section 2 entrance, flow through the flow distribution plate 3 of denitration section 2 front end, Incoming gas is shunted by flow distribution plate 3, arrive each metope of active carbon wall 4 with making uniform stream, active carbon wall 4 is piled up by several active carbon bags and is formed, and shape is " W " shape, and pollution gas is through the catharsis of active carbon wall 4, flow through the flow distribution plate 3 of denitration section 2 rear end again, through exporting 6 outflows under the swabbing action of the blower fan of last clean air in fan section 5.
Composition graphs 2, flow distribution plate 3 is vertically fixed in denitration section 2 along airflow direction, and between plate plate, spacing is equal.
Composition graphs 3, active carbon wall 4 is arranged to " W " shape, can increase charcoal absorption area, improves adsorption efficiency.Active carbon wall 4 is piled into the four sides wall of " W " shape by active carbon bag, and the angle between each face wall controls between 30 ° ~ 45 °, and in the present embodiment, angle is arranged as 36 °.The suction-operated of active carbon to nitrogen oxide needs certain adsorption time (at least 1s), and the thickness of active carbon wall will ensure that pollution gas can the holdup time be the shortest in active carbon wall is 1s, could the effective adsorption effect playing active carbon wall.In the present embodiment, air velocity is between 0.3 ~ 0.5m/s when this device for control flow check, and the thickness of active carbon wall is 0.45m.Active carbon wall reach absorption saturated after, carry out regeneration process, reuse.
Operation principle of the present invention is: first the pollution gas that pollution sources produce flows into this experimental rig through entrance, under the shunting action of flow distribution plate, with more uniform air-flow through active carbon wall, the denitration mode that active carbon adopts is the denitration of physical absorption formula, active carbon wall is piled up by several active carbon bags and is formed, shape is " W " shape, active carbon itself has very strong adsorption capacity and specific area, the active carbon wall of " W " shape is especially when space is certain, increase the area of active carbon, thus the adsorption effect good to nitrogen oxide can be realized, ensure that the spatter property of exit gas.The flow distribution plate of denitration section rear end is to ensure that the clean air after the absorption of active carbon wall can flow out through outlet uniformly.
Claims (5)
1. a tunnel or subway denitrification test device, it is characterized in that: comprise the denitration section (2) and fan section (5) that are connected to each other, denitration section (2) middle part is provided with active carbon wall (4), and denitration section (2) import and export is equipped with flow distribution plate (3); Fan section is provided with blower fan in (5); Denitration section (2) entrance is pollution gas entrance, and fan section (5) outlet is clean air outlet.
2. a kind of tunnel as claimed in claim 1 or subway denitrification test device, is characterized in that: described flow distribution plate (3) is vertically fixed in denitration section (2) along airflow direction, and between each flow distribution plate (3), spacing is equal.
3. a kind of tunnel as claimed in claim 1 or subway denitrification test device, is characterized in that: described active carbon wall (4) is piled into " W " shape by active carbon bag.
4. a kind of tunnel as claimed in claim 3 or subway denitrification test device, is characterized in that: the angle between each face wall of the active carbon wall (4) of described " W " shape is 30 ° ~ 45 °.
5. a kind of tunnel as claimed in claim 1 or subway denitrification test device, is characterized in that: the holdup time of pollution gas in described active carbon wall (4) is the shortest is 1s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510043985.0A CN104624015A (en) | 2015-01-28 | 2015-01-28 | Denitration test device for tunnels or metros |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510043985.0A CN104624015A (en) | 2015-01-28 | 2015-01-28 | Denitration test device for tunnels or metros |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104624015A true CN104624015A (en) | 2015-05-20 |
Family
ID=53203543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510043985.0A Pending CN104624015A (en) | 2015-01-28 | 2015-01-28 | Denitration test device for tunnels or metros |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568173A (en) * | 2018-05-10 | 2018-09-25 | 佛山市南方丽特克能净科技有限公司 | A kind of large size activated carbon wall filter device |
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| CN203842419U (en) * | 2014-06-04 | 2014-09-24 | 浙江聚英环保科技有限公司 | Small-air-volume waste gas purifier |
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2015
- 2015-01-28 CN CN201510043985.0A patent/CN104624015A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003126659A (en) * | 2001-10-29 | 2003-05-07 | Mitsubishi Heavy Ind Ltd | Flue gas treatment apparatus and desulfurization method |
| CN201108793Y (en) * | 2007-11-02 | 2008-09-03 | 何冠东 | Purifying means for unwanted exhaust gas advanced treatment |
| CN101721874A (en) * | 2008-10-29 | 2010-06-09 | 谈建民 | Exhaust gas purification system for tunnel |
| CN201337870Y (en) * | 2008-12-08 | 2009-11-04 | 裴登明 | Paint mist purifying device |
| CN102086773A (en) * | 2010-12-29 | 2011-06-08 | 上海纳米技术及应用国家工程研究中心有限公司 | Purification and ventilation device of air in tunnel |
| CN102721074A (en) * | 2012-06-12 | 2012-10-10 | 西安交通大学 | Sharp variable cross-section equivalent flow rate flow equalizing passage |
| CN202823138U (en) * | 2012-09-12 | 2013-03-27 | 广东森洋环境保护工程设备有限公司 | Organic waste gas treatment device with photochemistry technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108568173A (en) * | 2018-05-10 | 2018-09-25 | 佛山市南方丽特克能净科技有限公司 | A kind of large size activated carbon wall filter device |
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Application publication date: 20150520 |