CN204735096U - NOx exhaust treatment device - Google Patents
NOx exhaust treatment device Download PDFInfo
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- CN204735096U CN204735096U CN201520398398.9U CN201520398398U CN204735096U CN 204735096 U CN204735096 U CN 204735096U CN 201520398398 U CN201520398398 U CN 201520398398U CN 204735096 U CN204735096 U CN 204735096U
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Abstract
The utility model belongs to the technical field of waste gas treatment technical and specifically relates to a NOx exhaust treatment device, upwards is light catalytic oxidation district, alkali cleaning district, defroster, activated carbon adsorption layer, air discharge fan and landing leg in proper order bottom the device, be equipped with ultraviolet ray generator and catalytic unit in light catalytic oxidation distinguishes, alkali cleaning district be equipped with waste gas and wash with alkaline the subassembly, waste gas washes with alkaline the subassembly and includes that alkaline wash spray set, alkaline wash store groove, alkaline wash circulating pump, alkaline wash gathering device, alkaline wash interpolation device and discharging equipment. The utility model discloses an in NOx exhaust treatment device waste gas at first gets into light catalytic oxidation district, cooperate with decompositions to waste gas gas, gaseously continuing to rise and the alkaline wash contact, polluting substances in the gas and naoh resultant of reaction flow in during the lower part alkaline wash stores the groove along with the alkaline wash, the gaseous defroster that gets into, and the gaseous activated carbon adsorption layer that gets into after that, so far waste gas is handled into uncontaminated gas, realizes discharge to reach standard, simple structure, easy manufacturing.
Description
Technical field
The utility model relates to technical field of waste gas treatment, especially a kind of NOx emission-control equipment.
Background technology
In recent years, along with the sustained and rapid development of economy and the sharp increase of energy-consuming, NOx pollutes constantly aggravation, exceeds standard especially in some big cities as the ground NOx such as Beijing, Shanghai, Guangzhou pollute, even there is photochemical pollution in some areas, the Environmental capacity of NOx is extremely urgent.
Current, administer the method for NOx waste gas or fume emission, be divided into dry method and wet method.Wherein, find broad application abroad, what comparatively have the market competitiveness is selective catalytic reduction (SCR), SNCR method (SNCR).What these technology had achieves commercialization in China, and what have carries out Industrial demonstration.Although these technology can reach higher denitration effect, initial investment and operating cost higher, be difficult to large-scale promotion, be not suitable for China's national situation.Wet chemistry absorption process exists that technical equipment complex structure, complex operation, chemical reagent are expensive, water consumption greatly, easily causes the security of secondary pollution and production to be difficult to the shortcomings such as guarantee, and industrial applicability is wideless.For the NOx flue gas of power plant emission, current China can only using the technology such as low-oxygen burner, sectional combustion as the Main Means controlling NOx emission, the device of reserved denitrogenation in the design and construction of new power plant construction simultaneously.In view of the severe situation of China's NOx emission and pollution from now on, it is larger that NOx controls difficulty, and existing NOx waste gas pollution control and treatment technical threshold is higher, therefore the improvement of Novel denitration technology to China's environment feasible on research and development technology, reasonable in economy, applicable China's national situation, that have independent intellectual property right is significant.
Utility model content
The technical problems to be solved in the utility model is: for overcoming prior art device structure complexity, complex operation, problem that processing cost is higher, provide a kind of NOx emission-control equipment.
The utility model solves the technical scheme that its technical problem adopts: a kind of NOx emission-control equipment comprises the tank body of vertical vertical placement, described tank body offers in the middle of observation port and the tank body described in examine and replace mouth as cylindrical, top are conical structure, described tank body is followed successively by photochemical catalytic oxidation district, alkali cleaning district, demister and activated carbon adsorption layer from bottom to up, clean gas for ease of processing is discharged, described tank body top is provided with exhaust fan, and described tank base is provided with supporting leg;
Described photochemical catalytic oxidation district is positioned at the foot of whole device, is provided with ultraviolet light generator and catalytic unit in described photochemical catalytic oxidation district, and described catalytic unit is aluminium base TiO
2net, is enclosed in outside ultraviolet tube, and described ultraviolet light generator comprises controller, ballast, ultraviolet tube, and described bottom, photochemical catalytic oxidation district is provided with air inlet pipe and the gas distribution pipe of waste gas;
Described alkali cleaning district is provided with waste gas alkali cleaning assembly, described waste gas alkali cleaning assembly comprises the alkali wash water spray equipment being positioned at waste gas alkali cleaning assembly top, the alkali wash water that the alkali wash water being arranged in waste gas alkali cleaning assembly bottom stores groove and alkali wash water stored groove pumps into the alkali wash water circulating pump of alkali wash water spray equipment, further and cylindrical tank container matches, described alkali wash water stores the cross section of groove for circular, alkali wash water stores above groove and is provided with alkali wash water aggregation apparatus, the lower end diameter of described alkali wash water aggregation apparatus is less than the diameter that alkali wash water stores groove topmost, alkali wash water aggregation apparatus can make alkali wash water assemble to be back to alkali wash water and to store groove, described waste gas alkali cleaning assembly is also furnished with alkali wash water adding set and tapping equipment, described alkali wash water adding set comprises alkali cleaning flow container and agitating device, alkali wash water adding set is communicated with alkali wash water circulating pump by pipeline with valve.
Further, described demister is deflection plate demister or overflowing board demister, and demister is collected by the large drop in gas, and make it to return, reduce the moisture in gas, its operation principle is that gas enters demister, through a series of bend, discharge from top, and water droplet is due to the effect of its quality and kinetic energy, through racetrack portion, straight line falls, collide the surface of demister, and rebounding under Action of Gravity Field.
Described demister top is provided with activated carbon adsorption layer, in described activated carbon adsorption layer, active carbon is set, the advantages such as active carbon requires to have hole prosperity, specific area is large, adsorption rate is fast, friction resistant, resistance to flushing, as the operation through the long period, discovery active carbon becomes sticky, and just need change active carbon in time when gas prompt drop is low.
Further, described alkali wash water spray equipment is helical form spray equipment, and the liquid ejected presents vaporific, and mixing together between water smoke, do not stay dead angle, be conducive to the contact area expanding waste gas and solution, improve absorptivity and assimilation effect.
The alkali wash water that described waste gas alkali cleaning assembly adopts is sodium hydroxide solution; The matched proportion density of described alkali wash water is determined according to the exhausted air quantity of process and exhaust gas concentration experiment.
Preferred equipment, described ultraviolet tube is the ultraviolet tube of high strength, high ozone.
Further preferred equipment, described demister is deflection plate demister or overflowing board demister.
Further preferred equipment, the bottommost of package unit is provided with three supporting legs.
The beneficial effects of the utility model are, first a kind of NOx emission-control equipment waste gas of the present utility model enter in photochemical catalytic oxidation district, the ultraviolet tube of high strength, high ozone sends high energy UV light beam and ozone, irradiate waste exhaust gases, under the effect of catalytic unit, collaborative decomposition is carried out to waste exhaust gases, gas continues to rise and contacts with the alkali wash water that alkali wash water spray equipment sprays, polluter in gas and NaOH generation chemical reaction, reaction product flows into bottom alkali wash water with alkali wash water and stores in groove; Then gas enter demister, and the drop in gas is here blocked; Then gas enters activated carbon adsorption layer, and the material be mingled with in gas and drop are here blocked and absorb, and so far waste gas is processed into clean gas, realizes qualified discharge; Emission-control equipment of the present invention, structure is simple, is easy to manufacture.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
In figure: 1. photochemical catalytic oxidation district, 1-1. ultraviolet light generator, 1-2. catalytic unit, 1-3. air inlet pipe, 1-4. gas distribution pipe, 2. alkali cleaning district, 2-1. alkali wash water spray equipment, 2-2. alkali wash water stores groove, 2-3. alkali wash water circulating pump, 2-4. alkali wash water adding set, 2-5. alkali wash water aggregation apparatus, 3. demister, 4. activated carbon adsorption layer, 5. exhaust fan, 6. supporting leg.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of NOx emission-control equipment as shown in Figure 1, is upwards followed successively by photochemical catalytic oxidation district 1, alkali cleaning district 2, demister 3, activated carbon adsorption layer 4, exhaust fan 5 and supporting leg 6 from bottom of device.
Photochemical catalytic oxidation district 1 is positioned at the foot of whole device; Ultraviolet light generator 1-1, catalytic unit 1-2 is provided with in described photochemical catalytic oxidation district 1; Described ultraviolet light generator 1-1 comprises controller, ballast, ultraviolet tube; Described catalytic unit 1-2 is aluminium base TiO
2net, is enclosed in outside ultraviolet tube; Bottom, photochemical catalytic oxidation district 1 is provided with air inlet pipe 1-3 and the gas distribution pipe 1-4 of waste gas.
Alkali cleaning district 2 is provided with waste gas alkali cleaning assembly, and waste gas alkali cleaning assembly comprises the alkali wash water spray equipment 2-1 being arranged in waste gas alkali cleaning assembly top, the alkali wash water being positioned at waste gas alkali cleaning assembly bottom stores groove 2-2 and the alkali wash water that alkali wash water stored groove pumps into the alkali wash water circulating pump 2-3 of alkali wash water spray equipment.
Top, alkali cleaning district 2 is provided with demister 3, demister 3 is collected by the large drop in gas, and make it to return, and reduces the moisture in gas, its operation principle is that gas enters demister 3, through a series of bend, discharge from top, and water droplet is due to the effect of its quality and kinetic energy, through racetrack portion, straight line falls, and collides the surface of demister, and is rebounding under Action of Gravity Field.
Demister 3 top is provided with activated carbon adsorption layer 4, in activated carbon adsorption layer 4, active carbon is set, the advantages such as active carbon requires to have hole prosperity, specific area is large, adsorption rate is fast, friction resistant, resistance to flushing, as the operation through the long period, discovery active carbon becomes sticky, and just need change active carbon in time when gas prompt drop is low.
Concrete, for cylindrical, upper end are conical tank body in the middle of emission-control equipment, tank body offers observation port and examine and replace mouth, tank body volume size can according to pending gas flow number and determine, adopt vertical vertical placement.
Clean gas for ease of processing is discharged, and the conical tank body place of emission-control equipment topmost is provided with exhaust fan 5.
Further and cylindrical tank container matches, alkali wash water stores the cross section of groove 2-2 for circular, alkali wash water stores above groove 2-2 and is provided with alkali wash water aggregation apparatus 2-5, the lower end diameter of alkali wash water aggregation apparatus 2-5 is less than the diameter that alkali wash water stores groove 2-2 topmost, and alkali wash water aggregation apparatus 2-5 can make alkali wash water assemble to be back to alkali wash water and to store groove 2-2.
Further, waste gas alkali cleaning assembly is also furnished with alkali wash water adding set 2-4 and tapping equipment, and alkali wash water adding set 2-4 comprises alkali cleaning flow container and agitating device, and alkali wash water adding set is communicated with alkali wash water circulating pump by pipeline with valve.
Further, alkali wash water spray equipment 2-1 is helical form spray equipment; The liquid ejected presents vaporific, and mixing together between water smoke, do not stay dead angle, be conducive to the contact area expanding waste gas and solution, improve absorptivity and assimilation effect.
The alkali wash water that waste gas alkali cleaning assembly adopts is sodium hydroxide solution; The matched proportion density of alkali wash water is determined according to the exhausted air quantity of process and exhaust gas concentration experiment.
Preferred equipment, ultraviolet tube is the ultraviolet tube of high strength, high ozone.
Further preferred equipment, demister 3 is deflection plate demister or overflowing board demister.
Further preferred equipment, the bottommost of package unit is provided with three supporting legs 6.
Operation principle: first the waste gas that exhaust gas source produces enter in photochemical catalytic oxidation district 1, the ultraviolet tube of high strength, high ozone sends high energy UV light beam and ozone, irradiate waste exhaust gases, under the effect of catalytic unit 1-2, collaborative decomposition is carried out to waste exhaust gases, waste gas continues to rise and contacts with the alkali wash water that alkali wash water spray equipment 2-1 sprays, the polluter in gas and NaOH generation chemical reaction, and reaction product flows into bottom alkali wash water with alkali wash water and stores 2-2 in groove; Then gas enter demister 3, and the drop in gas is here blocked; Then gas enters activated carbon adsorption layer 4, and the material be mingled with in gas and drop are here blocked and absorb, and so far waste gas is processed into clean gas, realizes qualified discharge.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on description, must determine its technical scope according to right.
Claims (7)
1. a NOx emission-control equipment, it is characterized in that: the tank body comprising vertical vertical placement, for cylindrical, top are conical structure in the middle of described tank body, described tank body offers observation port and examine and replace mouth, described tank body is followed successively by photochemical catalytic oxidation district (1), alkali cleaning district (2), demister (3) and activated carbon adsorption layer (4) from bottom to up, described tank body top is provided with exhaust fan (5), and described tank base is provided with supporting leg (6);
Ultraviolet light generator (1-1) and catalytic unit (1-2) is provided with in described photochemical catalytic oxidation district (1), described ultraviolet light generator (1-1) comprises controller, ballast, ultraviolet tube, and described photochemical catalytic oxidation district (1) bottom is provided with air inlet pipe (1-3) and the gas distribution pipe (1-4) of waste gas;
Described alkali cleaning district (2) is provided with waste gas alkali cleaning assembly, described waste gas alkali cleaning assembly comprises the alkali wash water spray equipment (2-1) being positioned at waste gas alkali cleaning assembly top, the alkali wash water that the alkali wash water being arranged in waste gas alkali cleaning assembly bottom stores groove (2-2) and alkali wash water stored groove (2-2) pumps into the alkali wash water circulating pump (2-3) of alkali wash water spray equipment (2-1), alkali wash water store groove (2-2) top be provided with by alkali wash water assemble be back to the alkali wash water aggregation apparatus (2-5) that alkali wash water stores groove (2-2), described waste gas alkali cleaning assembly is also furnished with alkali wash water adding set (2-4) and tapping equipment, described alkali wash water adding set (2-4) comprises alkali cleaning flow container and agitating device, alkali wash water adding set (2-4) is communicated with alkali wash water circulating pump (2-3) by pipeline with valve.
2. a kind of NOx emission-control equipment as claimed in claim 1, is characterized in that: described catalytic unit (1-2) is aluminium base TiO
2net, is enclosed in outside ultraviolet tube.
3. a kind of NOx emission-control equipment as claimed in claim 1, is characterized in that: described demister (3) is deflection plate demister or overflowing board demister.
4. a kind of NOx emission-control equipment as claimed in claim 1, is characterized in that: described alkali wash water spray equipment (2-1) is helical form spray equipment.
5. a kind of NOx emission-control equipment as claimed in claim 1, is characterized in that: the lower end diameter of described alkali wash water aggregation apparatus (2-5) is less than the diameter that alkali wash water stores groove (2-2) topmost.
6. a kind of NOx emission-control equipment as claimed in claim 1, is characterized in that: described alkali wash water stores the cross section of groove (2-2) for circular.
7. a kind of NOx emission-control equipment as claimed in claim 1, is characterized in that: the quantity of described supporting leg is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520398398.9U CN204735096U (en) | 2015-06-11 | 2015-06-11 | NOx exhaust treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520398398.9U CN204735096U (en) | 2015-06-11 | 2015-06-11 | NOx exhaust treatment device |
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|---|---|
| CN204735096U true CN204735096U (en) | 2015-11-04 |
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ID=54416857
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520398398.9U Active CN204735096U (en) | 2015-06-11 | 2015-06-11 | NOx exhaust treatment device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345253A (en) * | 2016-11-18 | 2017-01-25 | 广西金邦泰科技有限公司 | Waste gas treatment device |
| CN106914113A (en) * | 2017-03-06 | 2017-07-04 | 常州大学 | A kind of chlorobenzene exhaust-gas treatment tank |
-
2015
- 2015-06-11 CN CN201520398398.9U patent/CN204735096U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345253A (en) * | 2016-11-18 | 2017-01-25 | 广西金邦泰科技有限公司 | Waste gas treatment device |
| CN106914113A (en) * | 2017-03-06 | 2017-07-04 | 常州大学 | A kind of chlorobenzene exhaust-gas treatment tank |
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