CN208389786U - A kind of cleaning equipment of dust-laden VOCs pollutant - Google Patents
A kind of cleaning equipment of dust-laden VOCs pollutant Download PDFInfo
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- CN208389786U CN208389786U CN201820693955.3U CN201820693955U CN208389786U CN 208389786 U CN208389786 U CN 208389786U CN 201820693955 U CN201820693955 U CN 201820693955U CN 208389786 U CN208389786 U CN 208389786U
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- adsorption
- laden
- dust
- buffering
- accommodation space
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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
Abstract
The utility model discloses a kind of cleaning equipments of dust-laden VOCs pollutant.It includes clarifier box, is installed in clarifier box and be divided into the inner space of clarifier box the adsorption-buffering and catalyst reaction device of the exhaust gas accommodation space and the net gas accommodation space being connected with outlet air oral area that are connected with air inlet oral area, the ozone being installed in exhaust gas accommodation space is filled with and is installed in the particle purifying device that in clarifier box and air outlet is connected by entering the wind oral area with the air inlet of ozone generating-device.The utility model carries out preparatory removal processing to the large particle in dust-laden VOCs exhaust emission using particle purifying device, when then passing through adsorption-buffering and catalyst reaction device, it can be acted on and be removed by the image force of conductive adsorbent material by charged fine particle.VOCs and ozone in exhaust gas form CO after catalytic oxidation then can occur2And H2O；It copes with the biggish occasion of VOCs concentration variation range in dust-laden exhaust gas.
Description
Technical field
The utility model relates to technical field of environment protection equipment, especially a kind of cleaning equipment of dust-laden VOCs pollutant.
Background technique
Currently, being frequently encountered some dust-laden VOCs in industrial production and daily life (that is: mainly by organic or inorganic
Particulate matter and volatile organic matter composition pollutant) emission problem, the oil flue waste gas as caused by catering trade, spray painting link
Generated exhaust gas containing coating cloud etc..
By taking the oil flue waste gas of catering industry as an example, it is most to remove that electrostatic oil fume cleaning equipment is generallyd use at present
Smoke particle object, then VOCs is removed by photocatalytic oxidation or other methods；Wherein, electrostatic oil fume cleaning equipment for
Partial size has good clean-up effect in 1 μm or more of smoke particle object, although tail gas can satisfy GB18483 substantially after purification
Emission request in " cooking fume discharge standard ", but for the treatment effeciency of fine particle (partial size≤1 μm) and VOCs
It is very low；Therefore, usually will appear restaurant oil smoke can qualified discharge, but dense smell, i.e. smoke abatement can be given out not
Taste removal.Meanwhile for the method for VOCs removal further including physisorphtion, combustion method, bioanalysis and low-temperature plasma method etc., so
And these methods are particularly unsuitable for the removal of the oil smoke VOCs of catering trade since operating cost is high, treatment effeciency is low.
In consideration of it, occur some new group technologies (patent publication No. for CN103785276A Chinese invention patent institute
It is disclosed it is a kind of using low-temperature plasma and catalyst synergistic effect purification oil smoke of catering industry method) to dust-laden VOCs into
Row effectively removes；However, such technique but has following defects that firstly, coming from such technique to the principle that dust-laden VOCs is removed
It sees, ozone and VOCs can only do brief stay in catalyst surface, be difficult to decompose VOCs exhaustive oxidation；Secondly, catering trade
The dynamic range of oil smoke VOCs concentration is very big, and concentration diurnal variation range is generally more than 4 orders of magnitude, such process side
Method can only carry out purification process design according to its peak concentration, so necessarily cause that equipment cost is high, the great consequence of energy consumption,
Its applicability is lost for added value is not for high catering industry；Finally, from the point of view of the processing result of such technique, respectively
The concentration of concentration after pollutant process even than the outlet of electrostatic oil fume cleaning equipment is taller, it is seen that this method to VOCs and
Fine particle is substantially without removal effect.
Utility model content
In view of the deficiency of the prior art, the purpose of this utility model is to provide a kind of dust-laden VOCs pollutants
Cleaning equipment.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of cleaning equipment of dust-laden VOCs pollutant, it includes a purifying box with air inlet oral area and outlet air oral area
Body, one, which are installed in clarifier box and the inner space of clarifier box are divided into the exhaust gas being connected with air inlet oral area, accommodates sky
Between and be connected with outlet air oral area the adsorption-buffering of net gas accommodation space and catalyst reaction device, one be installed in exhaust gas accommodate it is empty
In ozone generating-device and one be installed in clarifier box and air outlet passes through air inlet oral area and ozone generating-device
The particle purifying device that air inlet is connected.
Preferably, the particle purifying device is in electrostatic precipitator, fiber bag precipitator and wet scrubber tower
One or more of combinations.
Preferably, if the adsorption-buffering and catalyst reaction device include L-shaped preposition of dry plate longitudinal section shape
If if air duct isolation board, dry plate and preposition air duct isolation board are in the postposition air duct isolation board and dried noodle of the diagonal complementary structure of rectangle
Each other it is in left and right side by side and is spaced apart in the intracorporal adsorption-buffering of purifying box and catalysis reaction wall；The preposition air duct isolation
Plate and postposition air duct isolation board are each other in left and right side by side and front-back staggered is distributed, and adsorption-buffering described in adjacent two sides and urges
Change and is provided with a preposition air duct isolation board or a postposition air duct isolation board between the crack in the wall of reaction wall；Adsorption-buffering described in every face and
The adsorption hole relative to clarifier box in left and right directions distribution is offered in catalysis reaction wall；The exhaust gas accommodation space and net
Gas accommodation space is by adsorption-buffering and catalysis reaction wall, preposition air duct isolation board and postposition air duct isolation board jointly to clarifier box
Inner space make be isolated after form.
Preferably, the adsorption-buffering and catalysis reaction wall include that framework skeleton and several pieces are continuously stacked in framework bone
Frame is interior and is formed with the honeycomb substrate of several adsorption holes, and load has catalyst on the honeycomb substrate.
Preferably, the catalyst is metal simple-substance or one of metal oxide or metallic compound or a variety of.
Preferably, the honeycomb substrate is one of cellular activated carbon, zeolite molecular sieve, ceramic honey comb or a variety of.
Preferably, the ozone generating-device includes being placed in exhaust gas accommodating space and being located at going out for particle purifying device
The bracket of air port side, several be installed in the pressurization in bracket and being located in the contour area of the air outlet of particle purifying device
Agitation fan and the ozone generator for being installed in the air side in bracket and positioned at each stirred under pressure fan.
Preferably, in the clarifier box and positioned at the antetheca side top and rear wall side of adsorption-buffering and catalyst reaction device
Bottom end is separately provided for the maintenance that exhaust gas accommodation space and net gas accommodation space are isolated isolation door-plate, or is located at and inhales
The bottom end of antetheca side and the top of rear wall side of attached buffering and catalyst reaction device are separately provided for exhaust gas accommodation space
Door-plate is isolated with the maintenance that net gas accommodation space is isolated, after the outlet air oral area is opened in the top case wall of clarifier box
End.
Preferably, the outlet air oral area is built-in is equipped with water conservancy diversion waterproof blinds.
As the above scheme is adopted, the utility model is using particle purifying device in dust-laden VOCs exhaust emission
Large particle carry out preparatory removal processing, when then exhaust gas passes through adsorption-buffering and catalyst reaction device, by charged thin
Grain object acts on removal by the image force of conductive adsorbent material, and the VOCs in exhaust gas and ozone are attracted in honeycomb substrate
Catalyst surface catalytic oxidation occurs, VOCs is decomposed into CO under the continuous catalysed oxidn of ozone of redundancy2
And H2The ozone of O, redundancy are decomposed into O2；It can not only realize the discharge of clean gas, and it is dense to cope with VOCs in dust-laden exhaust gas
Spend the biggish occasion of variation range.
Detailed description of the invention
Fig. 1 is the Standard schematic diagram (one) of the utility model embodiment；
Fig. 2 is the Standard schematic diagram (two) of the utility model embodiment；
Fig. 3 is the adsorption-buffering of the utility model embodiment and the Standard schematic diagram of catalyst reaction device；
Fig. 4 is the Standard schematic diagram of the ozone generating-device of the utility model embodiment；
Fig. 5 is the gas flow paths schematic diagram of the first form of the utility model embodiment；
Fig. 6 is the gas flow paths schematic diagram of second of form of the utility model embodiment.
Specific embodiment
The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
As shown in Figures 1 to 4, the cleaning equipment of a kind of dust-laden VOCs pollutant provided in this embodiment, it includes:
Clarifier box 10, being can be according to the actual situation by the assembled molding cabinet such as inner support skeleton and sound insulating seal plate
Structure and there is air inlet oral area and outlet air oral area；
Adsorption-buffering and catalyst reaction device 20 are installed in clarifier box 10 and by the inner space of clarifier box 10
It is divided into the exhaust gas accommodation space a being connected with the air inlet oral area and net gas accommodation space b being connected with outlet air oral area, it is main to use
In to by being constituted by charged fine particle (such as 1 μm of particulate matter of partial size π), VOCs and its intermediate product and ozone etc.
Mix waste gas is adsorbed and is catalyzed reaction and clean gas is finally passed through the effect that outlet air oral area is externally discharged；
Ozone generating-device 30, is installed in exhaust gas accommodation space a and neighbouring air inlet oral area is arranged, is mainly used for institute
It the ozone of generation and is sufficiently mixed by charged fine particle, VOCs etc. to form mix waste gas；
Particle purifying device 40, is installed in clarifier box 10 and air outlet is filled by entering the wind oral area with ozone
It sets 30 air inlet to be connected, electrostatic precipitator, cloth-sack-type dust removal can be used according to the specifically used place of cleaning equipment
The combination of one or more of device and wet scrubber tower certainly, is made with achieving the purpose that effectively remove large particle
For preferred embodiment, preferred electrostatic precipitator, with (such as partial size is at 1 μm or more being used to remove the large particle in pollutant
Particulate matter) while, also can to fine particle carry out it is charged, small part VOCs is resolved into intermediate product or thorough mine
Change and generate simultaneously in the process the ozone of a certain concentration content.
The cleaning equipment of the present embodiment pre-processes exhaust emission first with particle purifying device 40 as a result,
(that is: mainly remove large particle, also or simultaneously to fine particle carry out it is charged, small part VOCs is resolved into intermediate production
Object or thorough mineralising generate certain density ozone), ozone is then further generated by ozone generating-device 30 and is incited somebody to action
It is sufficiently mixed with the exhaust gas being discharged by particle purifying device 40, meanwhile, utilize exhaust gas accommodation space a, adsorption-buffering
And catalyst reaction device 20 and net gas accommodating space b constitute air ventilation passage, can be increase draught area, reduction wind speed, drop
Low windage provides structure basis, and mix waste gas is when by adsorption-buffering and catalyst reaction device 20, by charged fine particle
Removal is acted on by the image force of conductive adsorbent material, the VOCs in exhaust gas can then be reacted with ozone in adsorption-buffering and catalysis
Catalytic oxidation occurs in device 20, VOCs is decomposed into CO under the continuous catalysed oxidn of ozone of redundancy2And H2O, it is superfluous
Remaining ozone is decomposed into O2, so that clean gas is discharged by outlet oral area.Based on this, the cleaning equipment of the present embodiment can
Large particle, fine particle and the VOCs in dust-laden VOCs pollution exhaust gas are effectively removed, and copes with VOCs in dust-laden exhaust gas
The biggish occasion of concentration variation range is especially useless in the dust-laden VOCs of reply low concentration finally to realize the discharge of clean gas
There is significantly more effect when gas.
To effectively increase wind area, stop can be fully carried out with adsorption-buffering and catalyst reaction device 40 and is connect
Touching, if the adsorption-buffering of the present embodiment and catalyst reaction device 20 include the L-shaped preposition air duct of dry plate longitudinal section shape
If isolation board 21, dry plate and preposition air duct isolation board 21 are in the postposition air duct isolation board 22 of the diagonal complementary structure of rectangle and several
Face is in left and right side by side and is spaced apart in adsorption-buffering and catalysis reaction wall in clarifier box 10 each other；Wherein, preposition wind
Road isolation board 21 and postposition air duct isolation board 22 are each other in left and right side by side and front-back staggered distribution (that is: is inhaled on adjacent two sides
A preposition air duct isolation board 21 or a postposition air duct isolation board 22 are provided between the crack in the wall of attached buffering and catalysis reaction wall)；Often
The adsorption hole c relative to clarifier box 10 in left and right directions distribution is offered on face adsorption-buffering and catalysis reaction wall；And it gives up
Gas accommodation space a and net gas accommodation space b is then by adsorption-buffering and catalysis reaction wall, preposition air duct isolation board 21 and postposition air duct
Isolation board 22 is made to form after being isolated to the inner space of clarifier box 10 jointly.As a result, by particle purifying device 40 and smelly
Treated the exhaust gas of oxygengenerating plant 30 can be entered by the crack in the wall of the two sides of preposition air duct isolation board 21 adjacent two sides adsorb it is slow
Punching and catalysis reaction wall crack in the wall between, then by adsorption hole c carry out turn to and with adsorption-buffering and be catalyzed reaction wall into
Row stops contact, is finally discharged into again by the crack in the wall of the two sides of postposition air duct isolation board 22 to net gas accommodation space b；In this process
In, preposition air duct isolation board 21, which can play, to be prevented from holding by adsorption-buffering and catalysis reaction wall treated gas backstreaming to exhaust gas
The effect received in a of space, and postposition air duct isolation board 22 can then play and prevent gas in exhaust gas accommodation space a unslow with absorption
It rushes and catalysis reaction wall carries out stopping the effect that contact flows directly into net gas accommodation space b, thus using the two to gas
The isolation steering-effecting of flow path stops to increase wind area, increase contact of the exhaust gas on adsorption-buffering and catalysis reaction wall
The time is stayed, guarantees that exhaust gas can be adsorbed fully and catalytic treatment is ((such as Fig. 3 institute from the point of view of the depression angle of clarifier box 10
Show), the conversion process of exhaust gas to purification gas is equivalent to be flowed with vertical-transverse direction-vertical path).
To guarantee adsorption-buffering and being catalyzed reaction wall to by the processing effect of charged fine particle, VOCs and its intermediate product
Fruit comprising framework skeleton 23 and several pieces of bees for being continuously stacked in framework skeleton 23 and being formed with several adsorption holes c
(it can use one of cellular activated carbon, zeolite molecular sieve, ceramic honey comb or a variety of to nest carrier 24 as the case may be, excellent
Select cellular activated carbon), load has one in such as metal simple-substance or metal oxide or metallic compound on honeycomb substrate 24
Kind or a variety of catalyst.When the exhaust emission for being mixed with ozone passes through honeycomb substrate 24 by adsorption hole c, ozone,
VOCs and its intermediate product can be adsorbed on the surface of catalyst by honeycomb, due to there are the ozone of enough redundancies, VOCs and
In-between product can be carbon dioxide and water by thorough catalysis oxidation step by step, the ozone of redundancy also can complete to be catalytically decomposed be
Oxygen discharge；And it then can be when passing through honeycomb substrate 24, since image force is acted on because being attracted to bee by charged fine particle
The surface of nest carrier 24 and be removed.
To guarantee that treated after exhaust gas can be sufficiently mixed with enough ozone by particle purifying device 40
It is discharged into exhaust gas accommodation space a, the ozone generating-device 30 of the present embodiment includes being placed in exhaust gas accommodating space a and being located at
The bracket 31 of the air outlet side of grain object purification device 40, several are installed in bracket 31 and are located at particle purifying device 40
It stirred under pressure fan 32 in the contour area of air outlet and is installed in bracket 31 and is located at each stirred under pressure fan 32
Air side ozone generator 33.Ozone is generated using ozone generator 33 as a result, and in the work of stirred under pressure fan 32
The exhaust gas being discharged via particle purifying device 40 is sufficiently mixed with ozone with lower.
For the structure for optimizing entire cleaning equipment to the maximum extent, guarantee the practicality energy, in clarifier box 10 and position
It is separately provided for accommodating exhaust gas in the antetheca side top and rear wall side bottom end of adsorption-buffering and catalyst reaction device 20 empty
Between the maintenance isolation door-plate 11 (that is: as shown in Figure 5) be isolated of a and net gas accommodation space b, or be located at adsorption-buffering and
The bottom end of the antetheca side of catalyst reaction device 20 and the top of rear wall side are separately provided for exhaust gas accommodation space a and net gas
The maintenance isolation door-plate 11 (i.e.: as shown in Figure 6) that accommodation space b is isolated, outlet air oral area is opened in the top of clarifier box 10
The rear end of tank wall, air inlet oral area can then be opened on the side wall of clarifier box 10 according to the actual situation and be located at exhaust gas accommodation space
In the contour area of a, air inlet oral area preferably is opened up in the lower end of the preceding tank wall of clarifier box 10 certainly.In this way, passing through maintenance
The setting of door-plate 11 is isolated and adsorption-buffering and catalyst reaction device 20 is cooperated to may make exhaust gas accommodation space a in longitudinal direction
Cross sectional shape forms the shape for being similar to L shape, as shown in figure 5, using the bottom surface of adsorption-buffering and catalyst reaction device 20
Side and front side flow into it as exhaust gas crosses wind face；And as shown in fig. 6, then using adsorption-buffering and catalyst reaction device
20 top surface side and front side flow into it as exhaust gas crosses wind face, to pass through the space structure to exhaust gas accommodation space a
Setting can change the flow path of exhaust gas not only to provide condition for the flow area that increases exhaust gas, and outlet air oral area is opened
The flowing of exhaust gas and the flowing of purification gas can be also set more to meet sky set on the rear end of the top case wall of clarifier box 10
Gas thermodynamic principles, to provide condition to reduce the energy consumption of cleaning equipment itself.
As a preferred embodiment, dress is equipped with water conservancy diversion waterproof blinds 12 in outlet air oral area.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
Equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, is directly or indirectly transported
Used in other related technical areas, it is also included in the patent protection scope of the utility model.
Claims (9)
1. a kind of cleaning equipment of dust-laden VOCs pollutant, it is characterised in that: it includes one with air inlet oral area and outlet air oral area
Clarifier box, one be installed in clarifier box and be divided into the inner space of clarifier box and give up with enter the wind that oral area is connected
The adsorption-buffering and catalyst reaction device of gas accommodation space and the net gas accommodation space being connected with outlet air oral area, one be installed in it is useless
Ozone generating-device and one in gas accommodation space are installed in clarifier box and air outlet is sent out by air inlet oral area and ozone
The particle purifying device that the air inlet of generating apparatus is connected.
2. a kind of cleaning equipment of dust-laden VOCs pollutant as described in claim 1, it is characterised in that: the particle purifying
Device is the combination of one or more of electrostatic precipitator, fiber bag precipitator and wet scrubber tower.
3. a kind of cleaning equipment of dust-laden VOCs pollutant as claimed in claim 2, it is characterised in that: the adsorption-buffering and
If if catalyst reaction device include the L-shaped preposition air duct isolation board of dry plate longitudinal section shape, dry plate and preposition air duct every
If from plate in the diagonal complementary structure of rectangle postposition air duct isolation board and dried noodle each other be in left and right side by side and be spaced apart in
The intracorporal adsorption-buffering of purifying box and catalysis reaction wall；The preposition air duct isolation board and postposition air duct isolation board are in left each other
It is right side by side and front-back staggered is distributed, and adsorption-buffering described in adjacent two sides and before being catalyzed and being provided with one between the crack in the wall of reaction wall
Set air duct isolation board or a postposition air duct isolation board；It offers in adsorption-buffering described in every face and catalysis reaction wall relative to net
Change the adsorption hole that cabinet is in left and right directions distribution；The exhaust gas accommodation space and net gas accommodation space are anti-by adsorption-buffering and catalysis
Wall, preposition air duct isolation board and postposition air duct isolation board is answered to make to form after being isolated to the inner space of clarifier box jointly.
4. a kind of cleaning equipment of dust-laden VOCs pollutant as claimed in claim 3, it is characterised in that: the adsorption-buffering and
Catalysis reaction wall includes framework skeleton and several pieces of bees for being continuously stacked in framework skeleton and being formed with several adsorption holes
Nest carrier, load has catalyst on the honeycomb substrate.
5. a kind of cleaning equipment of dust-laden VOCs pollutant as claimed in claim 4, it is characterised in that: the catalyst is gold
Belong to one of simple substance, metal oxide, metallic compound or a variety of.
6. a kind of cleaning equipment of dust-laden VOCs pollutant as claimed in claim 4, it is characterised in that: the honeycomb substrate is
One of cellular activated carbon, zeolite molecular sieve, ceramic honey comb are a variety of.
7. a kind of cleaning equipment of dust-laden VOCs pollutant as claimed in claim 2, it is characterised in that: the ozone fills
Set the air outlet side including being placed in exhaust gas accommodating space and being located at particle purifying device bracket, several be installed in bracket
It stirred under pressure fan in the contour area of air outlet that is interior and being located at particle purifying device and is installed in bracket and position
Ozone generator in the air side of each stirred under pressure fan.
8. such as a kind of cleaning equipment of dust-laden VOCs pollutant of any of claims 1-7, it is characterised in that: described
It is separately provided in clarifier box and positioned at the antetheca side top and rear wall side bottom end of adsorption-buffering and catalyst reaction device
Door-plate is isolated in the maintenance that exhaust gas accommodation space and net gas accommodation space are isolated, or is located at adsorption-buffering and catalysis reaction dress
The bottom end for the antetheca side set and the top of rear wall side are separately provided for carrying out exhaust gas accommodation space and net gas accommodation space
Door-plate is isolated in the maintenance of isolation, and the outlet air oral area is opened in the rear end of the top case wall of clarifier box.
9. a kind of cleaning equipment of dust-laden VOCs pollutant as claimed in claim 8, it is characterised in that: in the outlet air oral area
It is installed with water conservancy diversion waterproof blinds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820693955.3U CN208389786U (en) | 2018-05-10 | 2018-05-10 | A kind of cleaning equipment of dust-laden VOCs pollutant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820693955.3U CN208389786U (en) | 2018-05-10 | 2018-05-10 | A kind of cleaning equipment of dust-laden VOCs pollutant |
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| Publication Number | Publication Date |
|---|---|
| CN208389786U true CN208389786U (en) | 2019-01-18 |
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ID=65062553
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820693955.3U Expired - Fee Related CN208389786U (en) | 2018-05-10 | 2018-05-10 | A kind of cleaning equipment of dust-laden VOCs pollutant |
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| CN (1) | CN208389786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116272354A (en) * | 2023-03-20 | 2023-06-23 | 广东顺控环境投资有限公司 | Smoke denitration device of garbage incineration power generation furnace |
-
2018
- 2018-05-10 CN CN201820693955.3U patent/CN208389786U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116272354A (en) * | 2023-03-20 | 2023-06-23 | 广东顺控环境投资有限公司 | Smoke denitration device of garbage incineration power generation furnace |
| CN116272354B (en) * | 2023-03-20 | 2023-10-20 | 广东顺控环境投资有限公司 | Smoke denitration device of garbage incineration power generation furnace |
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Granted publication date: 20190118 Termination date: 20210510 |