CN110614027A - Air-cooled desulfurization denitration dust removal deodorization environmental protection equipment - Google Patents
Air-cooled desulfurization denitration dust removal deodorization environmental protection equipment Download PDFInfo
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- CN110614027A CN110614027A CN201910924935.1A CN201910924935A CN110614027A CN 110614027 A CN110614027 A CN 110614027A CN 201910924935 A CN201910924935 A CN 201910924935A CN 110614027 A CN110614027 A CN 110614027A
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- air
- dust removal
- shell
- deodorization
- waste gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment which comprises a supporting seat, wherein the left side of the top of the supporting seat is connected with an air cooler, the right side of the top of the supporting seat is connected with a second shell, a first shell is arranged between the air cooler and the second shell, the lower part of the left side wall of the first shell is communicated with an air inlet pipeline, the air inlet pipeline is communicated with an air outlet end of the air cooler, and an air guide channel is communicated between the top of the first shell and the top of the second shell. The waste gas purification device is reasonable in structural design and simple in operation, waste gas is cooled through the air cooler, internal equipment is prevented from being damaged due to overhigh temperature of the waste gas, particle impurities in the waste gas are removed through the dust removal filter screen, the hydrogen peroxide oxidant is sprayed out through the atomizing nozzle, so that sulfides and nitrates in the waste gas are purified, particles in the waste gas are filtered out through the high-efficiency filter screen, peculiar smell is removed through the activated carbon adsorption layer, the waste gas is effectively purified, the atmospheric pollution is reduced, and a good environment-friendly effect is achieved.
Description
Technical Field
The invention relates to the technical field of environment-friendly equipment, in particular to air-cooled desulfurization, denitrification, dedusting and deodorization environment-friendly equipment.
Background
Industrial waste gas is a generic term for various pollutant-containing gases discharged into the air during the combustion and production processes of fuels in the factory area of an enterprise. These exhaust gases, including carbon dioxide, carbon disulfide, hydrogen sulfide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, lead mercury (mist) sulfate, beryllium compounds, soot and productive dust, are exhausted into the atmosphere and contaminate the air. The substances enter human bodies through different respiratory tracts, some substances directly cause harm, some substances have an accumulation effect and can seriously harm the health of people, and enterprises in China design and manufacture a plurality of environment-friendly devices aiming at the problems.
The environmental protection equipment refers to mechanical products, structures and systems manufactured and built by production units or building and installation units for controlling environmental pollution and improving environmental quality. It is also believed that the environmental protection equipment refers to the mechanical processing products for treating environmental pollution, such as dust remover, welding fume purifier, monomer water treatment equipment, noise controller, etc. This knowledge is not comprehensive. The environment-friendly equipment also comprises power equipment for conveying the fluid substance containing the pollutants, such as a water pump, a fan, a conveyor and the like; meanwhile, the device also comprises monitoring and controlling instruments, such as a detecting instrument, a pressure gauge, a flow monitoring device and the like, which ensure the normal operation of the pollution prevention and control facility. Environmental governance is a very slow matter, and people should pay more attention to environmental protection.
The waste gas that produces to industrial area like mill, workshop through environmental protection equipment carries out the preliminary treatment before external emission to reach the standard that national waste gas externally discharged, this is waste gas treatment's trend, and current environmental protection equipment is good and bad, complex operation, and the SOx/NOx control effect to waste gas is not ideal, and causes the equipment damage because of high temperature easily, influences life, for this reason, we provide an air-cooled SOx/NOx control dust removal deodorization environmental protection equipment.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides air-cooled desulfurization, denitrification, dedusting and deodorization environmental-friendly equipment which is simple to operate, efficient and environment-friendly and is beneficial to waste gas treatment. In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:
the utility model provides an air-cooled SOx/NOx control dust removal deodorization environmental protection equipment, includes the supporting seat, the top left side of supporting seat is connected with the air-cooler, the top right side of supporting seat is connected with the second casing, be equipped with first casing between air-cooler and the second casing, the left side wall lower part intercommunication of first casing has the admission line, the end of giving vent to anger of admission line intercommunication air-cooler, the intercommunication has air duct between the top of first casing top and second casing.
Preferably, in the air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment, a spray chamber and a dust chamber are sequentially arranged in an inner cavity of a first shell from top to bottom, a partition plate is connected between the spray chamber and the dust chamber, a left side wall of the dust chamber is communicated with an air inlet pipeline, the inner cavity of the dust chamber is connected with a dedusting filter screen, a scraping blade is contacted with the lower surface of the dedusting filter screen, the bottom of the scraping blade is connected with a first driving shaft, and the bottom end, extending out of the first shell, of the first driving shaft is connected with a first motor; the intercommunication has the U-shaped pipe between clean room left side wall upper portion and the spray room left side wall lower part, the top center department of first casing is connected with the second motor, the bottom power take off end of second motor is connected with the second drive shaft, the second drive shaft stretches into spray room one end and is connected with the churning blade, the inner chamber lateral wall of spray room is connected with the toroidal tube, the inside wall equipartition of toroidal tube has a plurality of groups atomizer, the lateral wall of toroidal tube is connected with the feed liquor pipe, the feed liquor pipe other end stretches into the second casing, the inner chamber top of spray room is connected with the defogging board, the lateral wall bottom intercommunication of spray room has the fluid-discharge tube, be equipped with the control valve on the fluid-discharge tube.
Preferably, in the air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection device, a liquid storage cavity is formed in the lower portion of an inner cavity of the second shell, a deodorization cavity is formed in the upper portion of the inner cavity of the second shell and communicated with an air guide channel, a flow guide pipe is communicated with the top of the inner cavity of the liquid storage cavity, the bottom of the inner cavity of the liquid storage tank is connected with a liquid inlet pipe, a liquid suction pump is installed at one end, close to the liquid storage tank, of the liquid inlet pipe, a high-efficiency filter layer and an active carbon adsorption layer are connected to the upper portion of the inner cavity of the deodorization cavity, and an exhaust pipe is connected.
Preferably, in the air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment, the front end surface of the dust removal chamber is hinged with a bin door.
Preferably, in an air-cooled SOx/NOx control dust removal deodorization environmental protection equipment, the dust removal filter screen is located the inlet duct top, the dust removal filter screen is located the U-shaped pipe below.
Preferably, in the air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment, the U-shaped pipe and the air guide channel are both internally provided with one-way valves.
Preferably, in the air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment, the top of the supporting seat is connected with a PLC controller.
The invention has the beneficial effects that:
the invention has reasonable structural design and simple operation, the waste gas enters the first shell through the air inlet pipeline and is cooled by the air cooler, the damage to internal equipment due to overhigh temperature of the waste gas is prevented, the particle impurities in the waste gas are removed by filtering through the dust removing filter screen, the dust removing filter screen is prevented from being blocked by rotating the scraping blade, the waste gas enters the spray chamber through the U-shaped pipe after being filtered, the waste gas is scattered and distributed by the rotating turbulence blades, the hydrogen peroxide oxidant is sprayed out by the atomizing nozzle, thereby purifying the sulfide and the nitride in the waste gas, absorbing the generated mist through the demisting plate, leading the desulfurized and denitrated waste gas to enter the deodorization cavity of the second shell through the air guide channel, filtering out particles in the waste gas through the high-efficiency filter screen, removing peculiar smell through the active carbon adsorption layer, the waste gas is effectively purified, so that the atmospheric pollution is reduced, and a good environment-friendly effect is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a schematic view of the internal structure of the second housing according to the present invention;
fig. 3 is a schematic view of the internal structure of the first housing according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1-3, the embodiment is an air-cooled environmental protection device with desulfurization, denitrification, dedusting and deodorization functions, which includes a supporting seat 1, an air cooler 2 is connected to the left side of the top of the supporting seat 1, a second housing 3 is connected to the right side of the top of the supporting seat 1, a first housing 4 is arranged between the air cooler 2 and the second housing 3, an air inlet duct 5 is communicated with the lower portion of the left side wall of the first housing 4, the air inlet duct 5 is communicated with the air outlet end of the air cooler 2, and an air guide channel 6 is communicated between the top of the first housing 4 and the top of the second housing 3.
A spray chamber 402 and a dust removal chamber 401 are sequentially arranged in the inner cavity of the first shell 4 from top to bottom, a partition plate 403 is connected between the spray chamber 402 and the dust removal chamber 401, the left side wall of the dust removal chamber 401 is communicated with the air inlet pipeline 5, a dust removal filter screen 404 is connected in the inner cavity of the dust removal chamber 401, a scraping blade 405 is contacted with the lower surface of the dust removal filter screen 404, a first driving shaft 406 is connected to the bottom of the scraping blade 405, and a first motor 407 is connected to the bottom end, extending out of the first shell 4, of the first driving shaft 406;
the upper portion of the left side wall of the dust removal chamber 401 and the lower portion of the left side wall of the spray chamber 402 are communicated with a U-shaped pipe 408, the center of the top of the first housing 4 is connected with a second motor 409, the bottom power output end of the second motor 409 is connected with a second driving shaft 410, one end of the second driving shaft 410, which extends into the spray chamber 402, is connected with a turbulence blade 411, the inner cavity side wall of the spray chamber 402 is connected with a ring pipe 412, a plurality of groups of atomizing nozzles 413 are uniformly distributed on the inner side wall of the ring pipe 412, the outer side wall of the ring pipe 412 is connected with a liquid inlet pipe 414, the other end of the liquid inlet pipe 414 extends into the second housing 3, the top of the inner cavity of the spray chamber 402 is connected with a demisting plate 415, the bottom.
The lower part of the inner cavity of the second shell 3 is provided with a liquid storage cavity 301, the upper part of the inner cavity of the second shell 3 is provided with a deodorization cavity 302, the deodorization cavity 302 is communicated with the air guide channel 6, the top of the inner cavity of the liquid storage cavity 301 is communicated with a guide pipe 303, the bottom of the inner cavity of the liquid storage cavity 301 is connected with a liquid inlet pipe 414, one end of the liquid inlet pipe 414 close to the liquid storage cavity 301 is provided with a liquid pump 304, the upper part of the inner cavity of the deodorization cavity 302 is connected with a high-efficiency filter layer 305 and an active carbon adsorption layer 306, and the bottom of.
The preceding terminal surface of clean room 401 articulates there is the door, can clear up the dust after opening.
The dust screen 404 is located above the air intake duct 5, and the dust screen 404 is located below the U-shaped pipe 408.
The U-shaped pipe 408 and the air guide channel 6 are internally provided with one-way valves, so that the backflow of waste gas can be effectively prevented.
The top of supporting seat 1 is connected with the PLC controller, is convenient for control each electric component's in each device operation.
One specific application of this embodiment is:
when the device is used, an external power supply is connected, the first shell 4 and the second shell 3 are supported by the supporting seat 1, waste gas enters the dust removing chamber 401 in the first shell 4 through the air inlet pipeline 5, the air cooler 2 sends cold air to the air inlet pipeline 5 so as to cool the waste gas and prevent the waste gas from damaging internal equipment due to overhigh temperature, the waste gas is filtered by the dust removing filter screen 404 so as to remove particle impurities in the waste gas, the first motor 407 drives the first driving shaft 406 to rotate, so that the scraper 405 cleans the lower surface of the dust removing filter screen 404, the blockage of the dust removing filter screen 404 can be effectively prevented, the waste gas enters the spray chamber 402 through the U-shaped pipe 408 after being filtered, the second motor 409 drives the second driving shaft 410 to rotate, so that the turbulence blades 411 scatter the waste gas, and hydrogen peroxide oxidant is injected into the liquid storage cavity 301 through the flow guide pipe 303 to be stored, leading-in ring pipe 412 of hydrogen peroxide oxidant along feed liquor pipe 414 through drawing liquid pump 304, and then spout through atomizer 413, the hydrogen peroxide oxidant carries out redox reaction with the sulphide in the waste gas, the nitride, carry out purification treatment to harmful waste gas, open control valve 417 back waste liquid and discharge through fluid-discharge tube 416, absorb the fog foam that produces through demisting board 415, waste gas after the SOx/NOx control passes through air guide channel 6 and gets into second casing 3, filter out the particle in the waste gas through the high-efficient filter screen 305 in the deodorization chamber 302, detach the peculiar smell through active carbon adsorption layer 306, finally discharge through blast pipe 307, this device has carried out effectual purification treatment to waste gas, atmospheric pollution has been reduced, good environmental protection effect has been reached.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. The utility model provides an air-cooled SOx/NOx control dust removal deodorization environmental protection equipment, includes supporting seat (1), its characterized in that: the top left side of supporting seat (1) is connected with air-cooler (2), the top right side of supporting seat (1) is connected with second casing (3), be equipped with between air-cooler (2) and second casing (3) first casing (4), the left side wall lower part intercommunication of first casing (4) has inlet duct (5), inlet duct (5) intercommunication air-cooler (2) the end of giving vent to anger, the intercommunication has air guide channel (6) between the top of first casing (4) top and second casing (3).
2. The air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment as claimed in claim 1, characterized in that: a spray chamber (402) and a dust removal chamber (401) are sequentially arranged in an inner cavity of the first shell (4) from top to bottom, a partition plate (403) is connected between the spray chamber (402) and the dust removal chamber (401), the left side wall of the dust removal chamber (401) is communicated with an air inlet pipeline (5), the inner cavity of the dust removal chamber (401) is connected with a dust removal filter screen (404), the lower surface of the dust removal filter screen (404) is in contact with a scraping blade (405), the bottom of the scraping blade (405) is connected with a first driving shaft (406), and the bottom end, extending out of the first shell (4), of the first driving shaft (406) is connected with a first motor (407);
the utility model discloses a spray room, including dust removal room (401), spray room (402), bottom power take off end, second drive shaft (410), spray room (402), annular tube (412) and liquid inlet pipe (414), the top center department of first casing (4) is connected with second motor (409), the bottom power take off end of second motor (409) is connected with second drive shaft (410), second drive shaft (410) stretch into spray room (402) one end and are connected with stirring blade (411), the inner chamber lateral wall of spray room (402) is connected with annular tube (412), the inside wall equipartition of annular tube (412) has a plurality of groups of atomizer (413), the lateral wall of annular tube (412) is connected with liquid inlet pipe (414), the liquid inlet pipe (414) other end stretches into second casing (3), the inner chamber top of spray room (402) is connected with defogging board (415), the lateral wall bottom intercommunication of spray room (402) has fluid-discharge tube (416), the drain pipe (416) is provided with a control valve (417).
3. The air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment as claimed in claim 2, characterized in that: the deodorization device is characterized in that a liquid storage cavity (301) is formed in the lower portion of an inner cavity of the second shell (3), a deodorization cavity (302) is formed in the upper portion of the inner cavity of the second shell (3), the deodorization cavity (302) is communicated with an air guide channel (6), a guide pipe (303) is communicated with the top of the inner cavity of the liquid storage cavity (301), the bottom of the inner cavity of the liquid storage cavity (301) is connected with a liquid inlet pipe (414), a liquid pump (304) is installed at one end, close to the liquid storage cavity (301), of the liquid inlet pipe (414), the upper portion of the inner cavity of the deodorization cavity (302) is connected with a high-efficiency filter layer (305) and an active carbon adsorption layer (306), and the bottom of the inner.
4. The air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment as claimed in claim 2, characterized in that: the front end face of the dust removing chamber (401) is hinged with a bin door.
5. The air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment as claimed in claim 2, characterized in that: the dust removal filter screen (404) is located above the air inlet pipeline (5), and the dust removal filter screen (404) is located below the U-shaped pipe (408).
6. The air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment as claimed in claim 2, characterized in that: and one-way valves are arranged in the U-shaped pipe (408) and the air guide channel (6).
7. The air-cooled desulfurization, denitrification, dedusting and deodorization environmental protection equipment as claimed in claim 1, characterized in that: the top of the supporting seat (1) is connected with a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924935.1A CN110614027A (en) | 2019-09-27 | 2019-09-27 | Air-cooled desulfurization denitration dust removal deodorization environmental protection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910924935.1A CN110614027A (en) | 2019-09-27 | 2019-09-27 | Air-cooled desulfurization denitration dust removal deodorization environmental protection equipment |
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| Publication Number | Publication Date |
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| CN110614027A true CN110614027A (en) | 2019-12-27 |
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| CN201910924935.1A Pending CN110614027A (en) | 2019-09-27 | 2019-09-27 | Air-cooled desulfurization denitration dust removal deodorization environmental protection equipment |
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| CN111330365A (en) * | 2020-03-17 | 2020-06-26 | 孙婷婷 | Collect desulfurization dust removal deodorization in exhaust treatment device of an organic whole |
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| CN114768507A (en) * | 2022-04-24 | 2022-07-22 | 翟亮 | Biological soil exhaust-gas treatment filter tower deodorization system |
| CN115350587A (en) * | 2022-08-09 | 2022-11-18 | 攀枝花市蓝鼎环保科技有限公司 | Circulating fluidized bed device for low-temperature denitration of industrial flue gas and denitration process thereof |
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| CN114768507A (en) * | 2022-04-24 | 2022-07-22 | 翟亮 | Biological soil exhaust-gas treatment filter tower deodorization system |
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Application publication date: 20191227 |
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