CN215692834U - Gaseous pollutant purifying equipment for high-altitude highway tunnel - Google Patents
Gaseous pollutant purifying equipment for high-altitude highway tunnel Download PDFInfo
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- CN215692834U CN215692834U CN202120576446.4U CN202120576446U CN215692834U CN 215692834 U CN215692834 U CN 215692834U CN 202120576446 U CN202120576446 U CN 202120576446U CN 215692834 U CN215692834 U CN 215692834U
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- tunnel
- highway tunnel
- electrostatic dust
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- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 34
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 34
- 239000000428 dust Substances 0.000 claims abstract description 38
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000000746 purification Methods 0.000 claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 239000002912 waste gas Substances 0.000 claims abstract description 9
- 230000003197 catalytic effect Effects 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000003426 co-catalyst Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000005352 clarification Methods 0.000 claims 1
- 238000004887 air purification Methods 0.000 abstract description 11
- 239000006227 byproduct Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 229910002091 carbon monoxide Inorganic materials 0.000 description 10
- 238000009423 ventilation Methods 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
- Electrostatic Separation (AREA)
Abstract
The utility model discloses a device for purifying gaseous pollutants in a high-altitude highway tunnel, and belongs to the technical field of tunnel air purification. The utility model solves the technical problem that no purification equipment which is suitable for a large tunnel with high altitude and can effectively absorb complex air components in the tunnel exists at present. The highway tunnel gaseous pollutant purification equipment is sequentially provided with electrostatic dust removal equipment and waste gas purification equipment according to a polluted air inlet mode, wherein the waste gas purification equipment comprises an activated carbon adsorption chamber and a CO purifier, and the CO purifier is provided with a CO catalytic layer containing a hopcalite catalyst. The utility model can be changed according to the space size of different tunnels, has the advantages of small volume, no generation of byproducts and complete types of purified pollutants, has small influence on the driving safety of the highway tunnel when being applied to each tunnel, and is beneficial to removing gaseous pollutants in the high-altitude long tunnel.
Description
Technical Field
The utility model belongs to the technical field of tunnel air purification, and particularly relates to a high-altitude highway tunnel gaseous pollutant purification device.
Background
With the deepening of traffic planning in western regions, the development trend of highway tunnels in China is reflected in high altitude and large growth, and the number of the highway tunnels is more and more, and the scale of the highway tunnels is larger and more. In the tunnel operation process, due to the fact that the structure of traffic flow is complex, the traffic flow is large, in addition, the tunnel space is narrow, particularly in a high-altitude area, air is thin, the air quality of the tunnel is poor, and the national pollutant emission standard cannot be met. At present, the treatment of pollutants in the highway tunnel is still in a treatment mode mainly based on ventilation, the method plays a leading role in improving tunnel air, but part of harmful gases such as carbon monoxide, nitrogen oxide and the like have adverse effects on the atmospheric environment, and therefore how to safely, effectively and environmentally remove the substances is a key problem which needs to be solved by tunnel air purification equipment.
The air composition in the road tunnel is complex, and the pollution source is diversified. The tail gas of motor car, the dust and the gas that the operation of tunnel operation maintenance operation produced, the raise dust that the vehicle carried, the oil gas that the vehicle leaked oil produced to and the conflagration that the tunnel accident leads to etc.. Especially in high altitude areas, the exhaust emission components of the vehicle are greatly changed due to low oxygen content, low fuel efficiency and insufficient vehicle power, and especially the content of carbon monoxide is greatly increased. And as the composition structure of the road traffic vehicle is diversified, the components of the vehicle tail gas also present diversified characteristics. Therefore, different ways are needed to absorb and purify the tunnel pollutants. Aiming at the particles in the air flow, the electrostatic dust collector has small resistance and small volume and has less purification products. Aiming at the characteristics of large flow, low concentration, various pollutants and the like of gaseous pollutants in the highway tunnel, the adsorption method is suitable for purifying the gaseous pollutants in the highway tunnel. However, the currently available activated carbon is mainly used for adsorbing nitrogen oxides (NOx) and hydrocarbons (CmHn) in the polluted air of the tunnel, and cannot absorb carbon monoxide gas in the exhaust gas. Therefore, the air purification device for absorbing carbon monoxide at normal temperature and normal pressure has important application value for air purification of long tunnels at high altitude.
The air purification technology of the currently operated tunnel mainly depends on the ventilation technology of the tunnel. With the enhancement of environmental protection and safety awareness, ventilation cannot meet actual requirements, firstly, the flow rule of air in the long tunnel is complex, the emission efficiency of smoke dust and dust is low, secondly, pollutants are transferred into the atmosphere by ventilation, the pollution to the surrounding atmosphere is increased, and continuous harm can be caused to the surrounding environment and the health of residents; thirdly, the energy consumption of the ventilation equipment is high, and the maintenance cost of the fan is high. Especially for a large tunnel with high altitude, the operation requirements of the tunnel cannot be met only by the tunnel ventilation technology because of high altitude, thin air, long tunnel and complex air flow rule. The prior utility model is mainly based on the electrostatic dust removal technology, and provides a method for selecting the type of the electrostatic dust removal equipment on the basis, or provides a dust removal method and equipment combined with a tunnel ventilation system and the like. Therefore, the pollution problem of the road tunnel is urgently needed to be treated by other technical ways. In order to solve the problem of tunnel pollutant emission, an air purification technology is an important solution. The following key problems need to be solved in the air purification process of the high-altitude long tunnel:
(1) the existing tunnel air pollution treatment usually utilizes a ventilation method to directly remove the polluted air in the tunnel out of the tunnel. The method needs to separate and ventilate by means of a ventilation shaft, and has high construction cost, more required fans and low purification efficiency; meanwhile, the method does not achieve the function of air purification, only transfers pollutants into the atmosphere, aggravates the pollution to the surrounding atmosphere, and causes continuous harm to the surrounding environment and the health of residents. Therefore, the tunnel pollutants need to be absorbed according to the characteristics of the tunnel pollutants and discharged after harmless treatment.
(2) Automobile exhaust in tunnel pollutants contains part of toxic substance carbon monoxide and can not be absorbed by activated carbon. The method for treating carbon monoxide generally has the defects of high reaction temperature, high pressure, catalyst requirement, large reactant requirement, large reactor volume, difficulty in treating generated byproducts, easiness in causing secondary pollution, requirement for storing reactants and byproducts in a special space, and the like, and basically cannot meet the conditions in a highway tunnel.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that no purification equipment which is suitable for a large tunnel at high altitude and can effectively absorb complex air components in the tunnel exists at present.
In order to solve the technical problem, the utility model discloses a high-altitude highway tunnel gaseous pollutant purification device, which is sequentially provided with an electrostatic dust removal device and a waste gas purification device according to an air inlet mode of polluted air.
Wherein, the waste gas purification equipment comprises an activated carbon adsorption chamber and a CO purifier.
Wherein the CO purifier comprises a CO catalysis layer.
Wherein the CO catalyst layer is provided with a hopcalite catalyst.
Wherein, the active carbon adsorption chamber comprises an active carbon adsorption device.
Wherein, a drying layer is arranged between the active carbon adsorption chamber and the CO purifier.
Wherein, the electrostatic dust removal equipment comprises an air valve, a primary filter screen and an electrostatic dust collector.
Wherein, the electrostatic precipitator equipment includes self-cleaning system.
The utility model has the following advantages and beneficial effects:
in order to adsorb and purify tunnel pollutants as much as possible, the utility model adopts electrostatic dust removal and an active carbon adsorption layer to purify and adsorb particle pollutants, nitrogen oxides and hydrocarbon in the tunnel pollutants in a layered manner, on the basis, a drying layer and a catalytic layer are added at the rear part of the active carbon adsorption layer, and the catalytic oxidation is carried out on carbon monoxide gas;
in order to meet the conditions of narrow space in the tunnel and high temperature sensitivity, the CO catalyst layer adopts a hopcalite catalyst which can catalytically oxidize the carbon monoxide gas into carbon dioxide under the conditions of normal temperature and normal pressure and does not need to be contacted for a long time to absorb the carbon monoxide gas in the highway tunnel, and is suitable for air purification treatment of high-altitude long tunnels;
the internal arrangement of the utility model can be changed according to the space size of different tunnels, has the advantages of small volume, no byproduct generation and complete pollutant purification types, has small influence on the driving safety of the highway tunnel when being applied to each tunnel, and is beneficial to removing the pollutants in the tunnel.
Drawings
The accompanying drawings, which are included to provide a further understanding and description of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is a schematic diagram of the internal structure of a preferred implementation of the present invention;
FIG. 2 is a schematic diagram of the internal structure of another preferred implementation of the present invention;
fig. 3 is a schematic view of the present invention applied to a road tunnel.
Detailed Description
The utility model discloses a device for purifying gaseous pollutants in a high-altitude highway tunnel, which mainly comprises an electrostatic dust removal device and a waste gas purification device.
The electrostatic dust removal equipment is used for removing particles with the particle size of 0.01-100 mu m in air, and one preferable implementation mode is as follows: the electric dust removal equipment consists of an air valve, a primary filter screen, an electrostatic dust collector, a high-voltage power distribution cabinet and a control cabinet device.
The air valve is used for controlling the air speed so as to meet the air speed requirement of the electrostatic dust collector;
wherein, the primary filter screen is used for removing larger particles so as to protect the electrostatic dust collector;
the electrostatic dust collector is the core of a dust removal system, and polluted air to be treated in the tunnel enters the electrostatic dust collector to remove particles of 0.01-100 mu m in the air. The purifying process of the electrostatic dust collector can be divided into four stages of charging, dust collection, ash removal and slag removal.
Wherein, high voltage distribution cabinet provides direct current voltage for electrostatic precipitator device to guarantee the dust removal performance, improve the efficiency of getting rid of Particulate Matter (PM).
The control cabinet controls the functions of start-stop control, fault alarm, linkage protection and the like of the electrostatic dust collection equipment.
In a preferred implementation mode, the electrostatic dust collection equipment is additionally provided with an automatic cleaning system.
The automatic cleaning system is used for cleaning the electrostatic dust collector, the washing nozzle is arranged in the electrostatic dust collector, after Particulate Matters (PM) in the electrostatic dust collector are accumulated to a certain degree, the purification efficiency of the electrostatic dust collector is detected to be reduced, the system closes an inlet air valve of the electrostatic dust collector, and the washing system is started to wash the electrostatic dust collector.
Specifically, the automatic cleaning system cleans the electrostatic precipitator through a water pump and a spraying system, sewage enters a drainage ditch through a drainage pipe, and the specific implementation mode is shown in fig. 1.
The other important component of the utility model is the waste gas purification equipment, in particular, the waste gas purification equipment is composed of an activated carbon adsorption chamber and a CO purifier.
The active carbon adsorption chamber is used for adsorbing NOx and hydrocarbon CmHn in the polluted air of the tunnel, the adsorption material which is mainly made of active carbon and is rich in micropores is placed in the adsorption and denitration device, when airflow flows through the adsorption and denitration device, the NOx and part of the hydrocarbon CmHn are adsorbed in the porous material and removed, and the purified air is subjected to subsequent treatment.
Wherein, the CO purifier is used for adsorbing CO in the polluted air in the tunnel. In consideration of the characteristics of thin air, low temperature and complex air flow rule of the high-altitude highway tunnel, the CO catalyst layer is preferably placed with a Hogata catalyst. More preferably, a hopcalite catalyst is placed in the adsorption and denitration device according to the concentration condition of the tunnel CO. Still further preferably, depending on the characteristics of the hopcalite catalyst, a matching drying layer is placed in front of the catalyst, and when the gas stream flows through this section, the dried CO is catalyzed to CO2And then discharged into the tunnel, and the specific implementation mode is shown in fig. 2.
In addition, under the condition of meeting external conditions, the treatment efficiency of the hopcalite catalyst to low-concentration carbon monoxide can reach 60-70%, but the specific treatment efficiency needs to be matched according to the concentration range of CO in different tunnels, and the molar ratio of manganese dioxide to copper oxide in the hopcalite catalyst is 2.2:1-3: 1.
The increase of the hopcalite catalyst and the matched drying agent can cause the increase of the internal resistance of the electrostatic dust collection equipment, and the specific increase of the wind resistance needs to be calculated according to the use amount of the catalyst polluting the environment of different tunnels, so that the air inlet speed and the fan model are determined.
Taking a tunnel as an example, and referring to fig. 3, a detailed description will be given to an embodiment of the present invention, where the installation of the purification equipment for gaseous pollutants in a highway tunnel should avoid intruding into the boundary of the highway tunnel, and for an unfinished tunnel, a ceiling type installation may be adopted, where the embedded parts are first embedded at the pollutant gathering position, and then the purification equipment is installed. And a bypass type air purification station can be arranged and installed in a bypass type. In the case of a constructed tunnel, it is considered to install a purification apparatus at a position such as a conversion zone in a tunnel without affecting safe driving of the tunnel so as not to damage the tunnel structure. The specific installation mode needs to be selected according to different tunnel conditions.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. High height above sea level highway tunnel gaseous pollutant clarification plant, its characterized in that: the electrostatic dust removal equipment and the waste gas purification equipment are sequentially arranged according to the air inlet mode of the polluted air; the waste gas purification equipment comprises an activated carbon adsorption chamber and a CO purifier; and a drying layer is arranged between the activated carbon adsorption chamber and the CO purifier.
2. The high altitude highway tunnel gaseous pollutant purifying apparatus of claim 1, wherein: the CO purifier includes a CO catalytic layer.
3. The high altitude highway tunnel gaseous pollutant purifying apparatus of claim 2, wherein: the CO catalyst layer is provided with a hopcalite catalyst.
4. The high altitude highway tunnel gaseous pollutant purifying apparatus of claim 1, wherein: the activated carbon adsorption chamber comprises an activated carbon adsorption device.
5. The high altitude highway tunnel gaseous pollutant purifying apparatus of claim 1, wherein: the electrostatic dust removal equipment comprises an air valve, a primary filter screen and an electrostatic dust collector.
6. The high altitude highway tunnel gaseous pollutant purifying apparatus of claim 1, wherein: the electrostatic dust removal equipment comprises an automatic cleaning system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021202115541 | 2021-01-26 | ||
| CN202120211554 | 2021-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215692834U true CN215692834U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120576446.4U Expired - Fee Related CN215692834U (en) | 2021-01-26 | 2021-03-22 | Gaseous pollutant purifying equipment for high-altitude highway tunnel |
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| Country | Link |
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| CN (1) | CN215692834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523580A (en) * | 2022-08-18 | 2022-12-27 | 中国人民解放军海军潜艇学院 | Air purification system |
-
2021
- 2021-03-22 CN CN202120576446.4U patent/CN215692834U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115523580A (en) * | 2022-08-18 | 2022-12-27 | 中国人民解放军海军潜艇学院 | Air purification system |
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Granted publication date: 20220201 |